JP7360737B2 - Measuring device - Google Patents

Description

The present invention relates to a measuring device, and particularly to a measuring device that measures steam pipes, steam traps, etc. through which steam or condensate flows.

Steam traps are known that are used to discharge only condensate (drain) from piping equipment through which steam flows. In addition, the vibration intensity and surface temperature of the steam trap and the steam piping at its entrance are measured, and the presence or absence of steam leakage is diagnosed based on the correlation between them. For such diagnosis, a measuring device is used that includes a vibration probe for measuring the intensity of vibration of a steam trap or the like, and a temperature probe for measuring the surface temperature of the steam trap or the like.

Here, there are two types of measurement devices: a portable type that is carried by a worker, and an installation type in which a vibration probe or a temperature probe is fixed to a steam trap or the like. Patent Document 1 discloses an installation type measuring device. In the measuring device disclosed in Patent Document 1, a probe is fixed to a steam pipe with a block-shaped washer inserted therebetween. Patent Document 1 states that a block-shaped washer can be brought into close contact with a steam pipe having an annular cross section without a gap, and the tip of a probe can be brought into contact with the opposite side of the washer without a gap.

Patent No. 6389098

With the measuring device disclosed in Patent Document 1, it is considered difficult to accurately measure the vibration intensity and surface temperature of a steam trap or the like. That is, in order to diagnose whether there is a steam leak in a steam trap or the like, it is important to obtain the vibration intensity around 10 kHz, but in the structure disclosed in Patent Document 1, the surface of the steam pipe and the tip of the probe are Since a washer is inserted between the two, it is difficult to obtain a resonant frequency around 10 kHz due to the volume of the washer. Therefore, with the measuring device disclosed in Patent Document 1, it is difficult to accurately measure the vibration intensity and surface temperature.

The inventor of the present application conducted extensive research in an attempt to solve the above-mentioned problems, and developed a measuring device having a structure as shown in FIG.

As shown in FIG. 6, the measuring device 9 includes a probe section 90, a connecting section 91, and a main body section 92. The probe section 90 houses a vibration probe and a temperature probe inside. The main body portion 92 houses a circuit board on which an arithmetic circuit is configured to perform arithmetic processing based on the measured vibration intensity and surface temperature. The connection portion 91 accommodates connection wires (lead wires) that connect the vibration probe and the temperature probe to the circuit board.

The measuring device 9 also includes a U-bolt 93 and a nut 94. The tip of the U-shaped bolt 93 is inserted into a through hole 901a of a bracket 901 provided in the case of the probe section 90. A nut 94 is screwed onto the tip of the U-shaped bolt 93. Thereby, the measuring device 9 is fixed to the steam pipe 95. Note that by fixing the measuring device 9 to the steam pipe 95 as shown in FIG. 6, the tips of the vibration probe and temperature probe housed in the probe section 90 directly contact the surface 95a of the steam pipe 95. That will happen.

By the way, the steam piping or the like to which the measuring device is fixed has various outer diameters depending on the fixing location. For this reason, when trying to fix multiple measuring devices 9 as shown in FIG. It is necessary to prepare in advance, and the bracket 901 may also need to be replaced, so there is thought to be room for improvement from the viewpoint of cost.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a measuring device that can perform highly accurate measurements while suppressing cost increases.

A measuring device according to one aspect of the present invention uses a pipe body through which steam flows in a predetermined direction as a measuring object, and includes a vibration probe, a temperature probe, a probe case, a fixing member, and a tightening mechanism. Equipped with The vibration probe is a long member, one end of which is placed in contact with the object to be measured, and the other end of which has a vibration sensor that measures the intensity of vibration. The temperature probe is an elongated member, and is disposed such that one end is in contact with the object to be measured, and measures the surface temperature of the object to be measured. The probe case has a part including the one end of the vibration probe and a part including the one end of the temperature probe extending to the outside, and the rest of the vibration probe including the vibration sensor. portion and the remaining portion of the temperature probe are housed inwardly. The fixing member is an elongated member and has flexibility so that it can be made to fit along the outer peripheral surface of the object to be measured. The tightening mechanism fixes the probe case to the measurement target together with the fixing member.

In the measuring device according to this aspect, the probe case has two connecting parts to which the fixing member is connected, and one end of the vibration probe and one end of the temperature probe are each connected to the surface of the measurement target. The measurement object is fixed to the object to be measured by the fixing member and the tightening mechanism. Further, the fixing member includes a first connected portion that is connected to a first connecting portion that is one of the two connecting portions, and a second connecting portion that is the other of the two connecting portions. and a second connected part connected to, and from the first connected part to a location on the surface of the measurement target where one end of each of the vibration probe and the temperature probe abuts. The tube is spanned across the second connected portion via a location on the opposite side of the measurement object across the tube axis.

Furthermore, in the measuring device according to this aspect, the tightening mechanism section is provided at a connecting portion between the first connecting section and the first connected section, and the first connected section is connected to the first connecting section. By displacing the fixing member in the longitudinal direction of the fixing member so as to approach the fixing member, the object to be measured is tightened via the fixing member. The second connected portion is located at a predetermined location in the longitudinal direction of the fixing member, and the second connected portion connects the fixing member to the two connecting portions within a tightening allowance by the tightening mechanism. It is provided so that it can be tightened.

In the measuring device according to the above aspect, the probe case is fixed to the object to be measured using a flexible long band-shaped fixing member. Therefore, in the measuring device according to the above aspect, the probe case can be fixed even to measurement objects having different outer diameters within the length range of the fixing member. Therefore, in the measuring device according to the above aspect, there is no need to prepare a plurality of fixing members according to the outer diameter of the object to be measured unlike the device described using FIG. 6, and measurement can be performed while suppressing cost increases. It is possible to fix the probe case to the target object.

Further, in the measuring device according to the above aspect, the tightening mechanism is provided at the connecting portion between the first connecting portion of the two connecting portions and the first connected portion of the fixing member, and the tightening mechanism portion is provided in the connecting portion between the first connecting portion of the two connecting portions and the first connected portion of the fixing member. is provided so that the fixing member can be tightly connected to the two connecting parts within the range of the tightening allowance of the tightening mechanism part. Therefore, by connecting the second connected part to the second connecting part and then tightening the fixing member by the tightening mechanism (displacing the first connected part so that it approaches the first connecting part), , the fixing member can be tightly connected to the two connecting parts without loosening. Therefore, in the measurement device according to the above aspect, one end of each of the vibration probe and the temperature probe is maintained in direct contact with the surface of the measurement target, and the vibration intensity and surface temperature of the measurement target can be measured with high precision. can be measured.

In the measuring device according to the above aspect, the first connecting part may be a bracket having a through hole, and the tightening mechanism part is connected to the first connected part of the fixing member, and the other end thereof is connected to the first connected part of the fixing member. It has a bolt that can be inserted through the through hole, and a nut that is screwed onto the bolt that is inserted through the through hole, and the first connected part can be displaced closer to the nut by rotation of the nut. It may be possible.

In the measuring device according to the above aspect, the tightening mechanism includes a bolt and a nut, and tightens by threading the nut onto the bolt (the first connected portion is connected to the first connected portion). The operator can reliably fasten the fixing member to the two connecting parts simply by turning the nut.

In the measuring device according to the aspect described above, the fixing member may include a plurality of the second connected portions that can be selected according to an outer diameter of the measurement target object in the longitudinal direction of the fixing member.

In the above measurement device, since the fixed member has a plurality of second connected parts in the longitudinal direction thereof, any second connected part is selected from the plurality of second connected parts according to the outer diameter of the object to be measured. By connecting the fixing member to the second connecting portion, the fixing member can be tightly connected without loosening.

In the measuring device according to the above aspect, the fixing member may be a roller chain, and the second connecting portion may be a bracket having a through hole. In the measuring device according to the above aspect, the second connected portion is formed by a bolt that passes between the rollers at the location and the through hole, and a nut that is screwed into the bolt. It may also be connected to.

In the measuring device according to the above aspect, a roller chain is adopted as the fixing member, and since the second connected part is connected to the second connecting part by screwing a bolt and a nut, a dedicated special member is used. Costs can be reduced compared to other cases.

In the measuring device according to the above aspect, a contact point where one end of the vibration probe comes into contact with the surface of the measurement object and a contact point where one end of the temperature probe comes into contact with the surface of the measurement object are the They may be arranged so as to line up in a predetermined direction. Further, in the measurement device according to the above aspect, when viewed from the front from the tube axis direction of the measurement target, one end of the vibration probe and one end of the temperature probe are oriented toward the tube axis of the measurement target. It may also come into contact with the surface of the object to be measured.

In the measurement device according to the above aspect, since one end of each of the vibration probe and the temperature probe is arranged so as to directly contact the surface of the measurement object with one end pointing toward the tube axis of the measurement object, It is possible to accurately measure vibrations from and surface temperature.

In the measurement device according to the above aspect, the probe case further includes a cylindrical case member and a bottom member arranged to close at least a part of the opening on the side of the measurement object in the case member. It's okay. Moreover, in the measuring device according to the above aspect, the bottom member may have a through hole in a portion through which the vibration probe and the temperature probe are inserted. Furthermore, in the measuring device according to the above aspect, each of the vibration probe and the temperature probe may be fixed to the bottom member in a state in which each of the vibration probe and the temperature probe directly contacts a peripheral surface surrounding the through hole.

In the measurement device according to the above aspect, each of the vibration probe and the temperature probe is fixed to the bottom member of the probe case, so one end of each of the vibration probe and the temperature probe can be measured even in an environment where strong winds blow. It is possible to maintain a state in which it is firmly in contact with the surface of the object. In other words, in the measurement device according to the above aspect, the fixing points of the vibration probe and the temperature probe to the probe case are arranged at short distances from one end of each, so even if the probe case swings due to strong winds, the vibration will not occur. The influence of the swing of the probe case on the probe and temperature probe can be suppressed. Therefore, with the measuring device according to the above aspect, highly accurate measurement is possible even in an environment where strong winds blow.

The measuring devices according to each of the above aspects can perform highly accurate measurements while suppressing cost increases.

1 is a perspective view showing the external configuration of a measuring device according to an embodiment of the present invention. FIG. 3 is a front view showing how the measuring device is fixed to the steam pipe. FIG. 3 is a cross-sectional view showing the configuration of a probe section. FIG. 3 is a sectional view showing the bottom member of the probe section. FIG. 2 is a cross-sectional view showing the configuration of a vibration probe. FIG. 1 is a perspective view showing a previously developed measuring device.

Embodiments of the present invention will be described below with reference to the drawings. Note that the form described below is an example of the present invention, and the present invention is not limited to the following form in any way except for its essential configuration.

1. Configuration of Measuring Device 1 The configuration of the measuring device 1 according to the embodiment of the present invention will be described using FIG. 1.

As shown in Figure 1. The measuring device 1 includes a probe section 10, a connecting section 11, a main body section 12, a roller chain (fixing member) 13, a bolt 14, and nuts 15 and 16. The probe section 10 includes a cylindrical case member 100 and two brackets (connecting sections) 101 joined to the lower part of the case member 100 in the Z direction. The bracket 101 has a portion extending in the Y direction from the case member 100, and a through hole is provided in the portion.

The roller chain 13 includes a chain body 130 that is a long belt-shaped member, and a bolt 131 connected to one end of the chain body 130. The bolt 131 is inserted through a through hole in one of the two brackets 101, and the nut 15 is screwed into the bolt 131. The chain body 130 of the roller chain 13 is tightly connected to the two brackets 101 so as to pass through a part of the surface 500a of the steam pipe 500 that is the object to be measured. The chain body 130 is connected to the other bracket 101 with bolts 14 and nuts 16. In addition, in the chain body 130 of the roller chain 13, the part to which the bolt 131 is connected corresponds to the "first connected part", and the part through which the bolt 14 is inserted corresponds to the "second connected part". Further, of the two brackets 101, the bracket through which the bolt 131 is inserted corresponds to the "first connecting portion", and the bracket through which the bolt 14 is inserted corresponds to the "second connecting portion".

The steam pipe 500 is a pipe body extending along the pipe axis Ax500, and steam flows inside thereof.

The probe unit 10 of the measuring device 1 includes a vibration probe and a temperature probe housed inside the case member 100. Each tip (one end) of the vibration probe and the temperature probe is arranged so as to directly contact the surface 500a of the steam pipe 500. Note that the detailed structure of the probe section 10 will be described later.

2. Procedure for Fixing Probe Unit 10 to Steam Piping 500 As described above, in the measuring device 1 according to the present embodiment, the probe unit 10 is fixed to the steam piping 500 using the roller chain 13. A procedure for fixing the probe section 10 to the steam pipe 500 using the roller chain 13 will be explained using FIG. 2.

As shown in FIG. 2, when fixing the probe section 10, first, the tips of the vibration probe and the temperature probe of the probe section 10 are arranged with respect to the steam pipe 500 so that they directly contact the surface 500a. Note that, as shown in FIG. 2, when the probe unit 10 is arranged in the steam pipe 500, the tips of the vibration probe and the temperature probe are directed to the pipe axis Ax500 of the steam pipe 500.

Next, with the chain body 130 arranged approximately along the surface 500a of the steam pipe 500, bolts 14 are inserted between adjacent rollers in the chain body 130 and through the through holes provided in one bracket 101. Insert the nut 16 and screw it in (arrow A1). Also, at the same time or before or after the bolt 14 and nut 16 are screwed together, the bolt 131 connected to one end of the chain body 130 is inserted through the through hole provided in the other bracket 101, and the nut 15 is screwed. (arrow A2). Then, by tightening the bolts 14 and nuts 16, the chain body 130 and one of the brackets 101 are fixed so that there is no gap between them.

Next, by further screwing the nut 15 onto the bolt 131, the part of the chain body 130 connected to the bolt 131 is displaced closer to the bracket 101. As a result, the chain body 130 has no gap with respect to the surface 500a of the steam pipe 500, and the probe section 10 is fixed to the steam pipe 500 without a gap in the Z direction. As described above, the roller chain 13 is tightly connected to the bracket 101, and the fixing of the probe section 10 to the steam pipe 500 is completed.

In addition, in the measuring device 1 according to the present embodiment, the combination of the bolt 131 and the net 15 constitutes a tightening mechanism section that tightens between the bracket 101 and the roller chain 13. That is, as described above, by rotating the nut 15, the bolt 131 moves upward in the Z direction, whereby the chain body 130 and the surface 500a of the steam pipe 500 come into close contact with each other, and the surface 500a of the steam pipe 500 is It becomes possible to firmly fix the probe part 10.

3. Detailed Structure of Probe Section 10 The detailed structure of the probe section 10 will be explained using FIG. 3.

As shown in FIG. 3, the probe section 10 includes a case member 100, a lid member 102, a bottom member 103, a vibration probe 105, and a temperature probe 106. The case member 100 is a cylindrical member, and is made of, for example, ABS resin (acrylonitrile-butadiene-styrene copolymer synthetic resin). Note that the bracket 101 shown in FIGS. 1 and 2 is attached to the outer peripheral wall of the case member 100.

The lid member 102 is a disc-shaped member that closes the upper opening in the Z direction of the case member 100 (the opening on the far side from the steam pipe 500). The lid member 102 is made of, for example, ABS resin. The bottom member 103 is a member that closes a part of the lower opening in the Z direction of the case member 100 (opening on the steam pipe 500 side), and is made of a metal material (for example, stainless steel).

The bottom member 103 is fixed to the bottom of the case member 100 with a plurality of (for example, two) screws 104. The bottom member 103 has two through holes 103a and 103b. The through holes 103a and 103b are provided so as to pass through the bottom member 103 in the thickness direction (Z direction).

In addition, in the measuring device 1 according to the present embodiment, a combination of the case member 100, the lid member 102, and the bottom member 103 constitutes a probe case.

The vibration probe 105 is an elongated member, and a portion including a tip (one end) 105 a passes through a through hole 103 a of the bottom member 103 and extends downward in the Z direction, and the remaining portion extends downward in the Z direction. It is accommodated in the inner space 100a. Note that when the probe part 10 is fixed to the steam pipe 500 as shown in FIGS. 1 and 2, the vibration probe 105 is arranged so that the tip 500a is oriented toward the pipe axis Ax500 of the steam pipe 500. .

The vibration probe 105 is fixed to the bottom member 103 at the portion that is inserted through the through hole 103a of the bottom member 103 (arrow B1), and the remaining portion is arranged in a non-contact state with respect to the case member 100 ( Arrow B3). The vibration probe 105 has a lead wire 105b extending from the other end (the upper end in the Z direction). The lead wire 105b is inserted through the lid member 102 and is routed from the connecting portion 11 to the main body portion 12. The vibration probe 105 measures the intensity of vibration of the steam pipe 500 with which the tip 105a comes into contact.

The temperature probe 106 is an elongated member, and a portion including a tip (one end) 106 a passes through a through hole 103 b of the bottom member 103 and extends downward in the Z direction, and the remaining portion extends downward in the Z direction. It is accommodated in the inner space 100a. Note that when the probe part 10 is fixed to the steam pipe 500 as shown in FIGS. 1 and 2, the tip 106a is also oriented toward the tube axis Ax500 of the steam pipe 500, and is oriented toward the tip 105a of the vibration probe 105. The pipes are arranged so as to be lined up in the X direction (the direction in which the pipe axis Ax500 of the steam pipe 500 extends).

The temperature probe 106 is fixed to the bottom member 103 at the portion inserted through the through hole 103b of the bottom member 103 (arrow B2), and the remaining portion is arranged in a non-contact state with respect to the case member 100 and the vibration probe 105. (arrow B4). The temperature probe 106 has a lead wire 106b extending from the other end (upper end in the Z direction). The lead wire 106b is inserted through the lid member 102 and is routed from the connecting portion 11 to the main body portion 12. Temperature probe 106 measures the temperature of surface 500a of steam pipe 500.

In the measuring device 1 according to this embodiment, the tip 105a of the vibration probe 105 and the tip 106a of the temperature probe 106 both have curved (hemispherical) outer surfaces. This is effective in bringing the tip 105a of the vibration probe 105 and the tip 106a of the temperature probe 106 into reliable contact with the surface 500a of the steam pipe 500.

4. Structure of Bottom Member 103 The structure of the bottom member 103 will be explained using FIG. 4.

As shown in FIG. 4, when the bottom member 103 is viewed in cross section in a direction perpendicular to the Z direction, the bottom member 103 has two arcuate parts 103i and 103j that face each other in the X direction, and two arcuate parts 103i and 103j that face each other in the Y direction. The outer periphery is constituted by the two string parts 103g and 103h. The string portion 103g and the string portion 103h are parallel to each other. The arcuate portions 103i and 103j contact the inner circumferential surface 100b of the case member 100 having an annular shape without a gap.

The bottom member 103 has four screw holes 103c to 103f. The screw hole 103c has a central axis Ax1 parallel to the direction in which the string parts 103g and 103h extend (X direction), and is continuous with the through hole 103a. The screw hole 103d is connected to the string portion 103g. It has a central axis Ax2 parallel to the direction in which 103h extends (X direction) and is continuous with the through hole 103b. The screw hole 103e has a central axis Ax3 that is perpendicular to the direction in which the string parts 103g and 103h extend (X direction), and is continuous with the through hole 103a. The screw hole 103f has a central axis Ax4 that is perpendicular to the direction in which the string portions 103g and 103h extend (X direction), and is continuous with the through hole 103b.

The bottom member 103 is fixed to the end opening of the case member 100 with two screws (male screws) 104. Specifically, the case member 100 is formed with through holes 100c and 100d that are continuous with the screw holes 103c and 103d when the bottom member 103 is attached. The respective screws 104 are inserted through the through holes 100c and 100d and are screwed into the female threads of the screw holes 103c and 103d. The bottom member 103 is fixed to the case member 100 by screwing screws 104 into screw holes 103c and 103d.

The vibration probe 105 has a part of its tip 105a inserted into the through hole 103a, and a part of its outer circumferential surface is pressed against the tip of the set screw (male screw) 107 by the inner circumferential surface of the through hole 103a. are pressed against each other. The vibration probe 105 is fixed to the bottom member 103 by the fastening force between the female screw of the screw hole 103e and the set screw 107.

The temperature probe 106 has a part of the tip 106a inserted into the through hole 103b, and a part of the outer circumferential surface of the temperature probe 106 is inserted into the inner circumferential surface of the through hole 103b under pressure from the screw tip of the set screw (male screw) 107. are pressed against each other. The temperature probe 106 is fixed to the bottom member 103 by the fastening force between the female screw of the screw hole 103f and the set screw 107. Note that the set screw 107 used in this embodiment refers to a "hexagon socket set screw".

5. Detailed Structure of Vibration Probe 105 The detailed structure of the vibration probe 105 will be described using FIG. 5.

As shown in FIG. 5, the vibration probe 105 includes a probe rod 1050, a pedestal 1051, a heat insulator 1052, a vibration sensor 1053, and a boss 1054. The probe rod 1050 is a cylindrical or columnar member made of a metal material (for example, stainless steel). The tip of the probe rod 1050 is the tip 105a of the vibration probe 105, and its outer surface is formed of an outwardly convex curved surface (hemispherical surface).

The pedestal portion 1051 is a cylindrical member made of a metal material (for example, stainless steel), and has a screw hole 1051b formed on the central axis Ax105 of the vibration probe 105. The heat insulating portion 1052 is a member made of alumina ceramics and has a cylindrical shape. The end of the probe rod 1050 (the end opposite to the tip 105a) is fitted into the heat insulating part 1052 from one end, and the pedestal part 1051 is fitted from the other end.

The probe rod 1050 fitted into the heat insulating part 1052 and the pedestal part 1051 are arranged so that a gap SP is left between the end faces 1050a and 1051a. Although detailed illustration is omitted, the heat insulating portion 1052, the probe rod 1050, and the pedestal portion 1051 are fixed from the outside in a direction intersecting the central axis Ax105 with screws or the like.

The vibration sensor 1053 is a piezoelectric acceleration sensor that uses piezoelectric ceramics as a piezoelectric element. The vibration sensor 1053 is fixed to the pedestal part 1051 without a gap by screwing a screw 1054 with a female thread of a screw hole 1051b in the pedestal part 1051.

Here, a method for setting the size of the vibration probe 105 will be explained.

When measuring vibrations in a measurement object such as a steam trap in which either steam or condensate (drainage) flows, certain frequency components may be large depending on whether the fluid flowing inside the measurement object is steam or not. In contrast, it is known that it is possible to determine with relatively high accuracy whether or not the fluid flowing inside the object to be measured is steam by specifically examining the vibration frequency around 10 kHz (Japanese Patent Laid-Open No. 2016-11904). . Therefore, it is important that the vibration probe 105 of the measuring device 1, which is used when diagnosing the presence or absence of steam leaks from a steam trap, etc., be formed so that it can measure vibrations around 10 kHz with high precision. .

Based on the above knowledge, the sizes of the probe rod 1050, the pedestal section 1051, and the heat insulating section 1052 are set. Specifically, the resonance frequency is f, the vibration acceleration of the probe rod 1050, the pedestal 1051, and the insulation part 1052 is C, the length from the tip 105a to the mounting surface of the vibration sensor 1053 on the pedestal 1051 is L, and the tip 105a is When the cross-sectional size from .
f=C×(D/L)...(Formula 1)
In the above relational expression, the size is set assuming that the resonance frequency f is around 10 kHz.

6. Effects In the measuring device 1 according to the present embodiment, a probe case (case member 100, lid member 102, bottom member 103) is connected to a steam pipe (measurement target) using a long belt-shaped roller chain (fixing member) 13 having flexibility. (object) is fixed at 500. Therefore, in the measuring device 1, it is possible to fix the probe case to the steam pipes 500 having mutually different outer diameters within the range of the length of the roller chain 13. Therefore, in the measuring device 1, unlike the device described using FIG. 6, there is no need to prepare a plurality of fixing members depending on the outer diameter of the object to be measured, and the measurement device 1 does not need to prepare a plurality of fixing members depending on the outer diameter of the object to be measured. It is possible to fix the probe case.

In addition, in the measuring device 1 according to the present embodiment, a tightening mechanism (a mechanism composed of a bolt 131 and a nut 15 The roller chain 13 is connected to the other bracket 101 by a bolt 14 and a nut 16 within the tightening allowance (thread length of the bolt 131) of the tightening mechanism. Therefore, after connecting a predetermined location of the roller chain 13 to the other bracket 101 using the bolt 14 and nut 16, the nut 15 is tightened to the bolt 131 (the bolt 131 of the roller chain 13 is connected to the bracket 101). By displacing the two brackets so that the connected points are closer to each other, the roller chain 13 can be tightly connected to the two brackets 101 without loosening. As a result, in the measuring device 1, the state in which the tips 105a and 106a of the vibration probe 105 and the temperature probe 106 are in direct contact with the surface 500a of the steam pipe 500 is maintained, and the intensity of the vibration of the steam pipe 500 and the surface Temperature can be measured with high precision.

In addition, in the measuring device 1 according to the present embodiment, the bolt 131 and the nut 15 constitute the tightening mechanism, so that the operator can tighten the roller chain 13 to the two brackets 101 by simply turning the nut 15. It can be firmly connected.

Furthermore, since the measuring device 1 according to the present embodiment employs the roller chain 13 as the fixing member, the portions between the rollers in each piece can be respectively used as second connected portions. By selecting an arbitrary second connected part from the plurality of second connected parts according to the outer diameter of the roller chain 13 and connecting it to the bracket 101, the roller chain 13 can be tightly connected without loosening.

In addition, in the measuring device 1 according to the present embodiment, the roller chain 13 is adopted as the fixing member as described above, and the roller chain 13 is fixed by screwing the bolt 14 and the nut 16 and screwing the bolt 131 and the nut 15. Since it can be tied tightly, costs can be reduced compared to the case where a special member for exclusive use is used.

Furthermore, in the measuring device 1 according to the present embodiment, the tips 105a and 106a of the vibration probe 105 and the temperature probe 106 directly contact the surface 500a of the steam pipe 500 in a state where they are oriented toward the pipe axis Ax500 of the steam pipe 500. With this arrangement, it is possible to accurately measure the vibrations and surface temperature from the steam pipe 500.

In addition, in the measuring device 1 according to the present embodiment, since the vibration probe 105 and the temperature probe 106 are each fixed to the bottom member 103, the vibration probe 105 and the temperature probe 106 can be used even in an environment where strong winds blow. 106 can be maintained in a state in which the tips 105a, 106a are firmly in contact with the surface 500a of the steam pipe 500. That is, in the measuring device 1, the fixing points of the vibration probe 105 and the temperature probe 106 to the probe case (points indicated by arrows B1 and B2 in FIG. 3) are arranged at short distances from the respective tips 105a and 106a. Even if the probe case shakes due to strong wind, the influence of the shake of the probe case on the vibration probe 105 and the temperature probe 106 can be suppressed to a small level. Therefore, with the measuring device 1, highly accurate measurement is possible even in an environment where strong winds blow.

As described above, the measuring device 1 according to the present embodiment allows highly accurate measurement while suppressing cost increases.

[Modified example]
Although the measuring device 1 according to the above embodiment employs the roller chain 13 as an example of the fixing member, the present invention is not limited to this. For example, it is also possible to employ a band-like member such as a hose band for piping. Furthermore, the material constituting the fixing member does not necessarily have to be a metal material, and any material that is resistant to the surface temperature of the object to be measured, such as the steam pipe 500, can be used. be.

In the measuring device 1 according to the embodiment described above, the tightening mechanism is configured by a combination of the bolt 131 connected to one end of the chain body 130 and the nut 15 screwed into the bolt 131. , but is not limited to this. For example, it is also possible to employ blind rivets.

In addition, in the measuring device 1 according to the above embodiment, the tightening mechanism is configured using the bolt 131 connected to one end of the chain body 130, but a similar bolt is also used at the other end. It is also possible to connect the bolts and configure the tightening mechanism using the bolts.

Although the measuring device 1 according to the above embodiment employs the vibration probe 105 having the probe rod 1050 that is a solid cylinder, the present invention is not limited to this. For example, a vibrating probe having a hollow cylindrical probe rod may be used. Further, the cross-sectional shape of the probe rod (the cross-sectional shape perpendicular to the central axis Ax105) is not limited to a circle, but may be polygonal or oval (including an ellipse).

In the measuring device 1 according to the above embodiment, the probe rod 1050 is made of a metal material such as stainless steel, and the heat insulating part 1052 is made of alumina ceramics, but the present invention is not limited to this. do not have. For example, it is also possible to form the probe rod from alumina ceramics, or to form the heat insulating part from a resin material.

In the measuring device 1 according to the above embodiment, the vibration probe 105 and the temperature probe 106 are fixed to the bottom member 103 using the set screw 107, but the present invention is not limited to this. For example, the vibration probe and temperature probe may be fixed to the bottom member using screws or bolts with heads. Alternatively, riveting, welding, brazing, or the like may be used.

In the measuring device 1 according to the embodiment described above, the case member 100 and the bottom member 103, which are separate members, are joined together, but the present invention is not limited to this. For example, it is also possible to adopt a configuration in which the case member and the bottom member are integrally formed.

In the measuring device 1 according to the above embodiment, the bottom member 103 is provided with separate through holes 103a through which the vibration probe 105 is inserted and through holes 103b through which the temperature probe 106 is inserted. It is not subject to any limitations. For example, a vibration probe and a temperature probe may be inserted through one through hole.

1 Measuring device 10 Probe section 12 Main body section 13 Roller chain (fixing member)
15 Nut (tightening mechanism part)
100 Case member 101 Bracket (connection part)
103 Bottom member 103a, 103b Through hole 105 Vibration probe 106 Temperature probe 131 Bolt (tightening mechanism part)
500 Steam piping (measurement object)
1050 Probe rod 1051 Pedestal part 1052 Heat insulation part 1053 Vibration sensor

Claims (6)

A measurement device whose measurement object is a pipe body through which steam flows in a predetermined direction,
a vibration probe that is a long member, one end of which is disposed so as to come into contact with the object to be measured, and the other end of which has a vibration sensor that measures the intensity of vibration;
a temperature probe that is an elongated member and is arranged such that one end is in contact with the measurement target object, and measures the surface temperature of the measurement target object;
With a part of the vibration probe including the one end and a part of the temperature probe including the one end extending to the outside, the remaining part of the vibration probe including the vibration sensor and the temperature a probe case inwardly housing the remainder of the probe;
a fixing member that is a long member and has flexibility that allows it to be aligned along the outer circumferential surface of the measurement target;
a tightening mechanism unit that fixes the probe case to the measurement target together with the fixing member;
Equipped with
The probe case has two connecting parts to which the fixing member is connected, and one end of the vibration probe and one end of the temperature probe are each in direct contact with the surface of the object to be measured. and is fixed to the measurement object by the fixing member and the tightening mechanism,
The fixing member is connected to a first connected part that is connected to a first connecting part that is one of the two connecting parts, and to a second connecting part that is the other of the two connecting parts. and a second connected part connected to each other, and from the first connected part to a location where one end of each of the vibration probe and the temperature probe abuts on the surface of the measurement object, the measurement is performed. spanning the second connected portion via a point on the opposite side across the tube axis of the object;
The tightening mechanism is provided at a connecting portion between the first connecting portion and the first connected portion, and the tightening mechanism portion is configured to tighten the fixing member so that the first connected portion approaches the first connecting portion. Tightening the measurement target via the fixing member by displacing the fixing member in the longitudinal direction;
The second connected portion is a predetermined location in the longitudinal direction of the fixing member, and tightens the fixing member to the two connecting portions within a tightening allowance by the tightening mechanism. It is possible to
Measuring device. The measuring device according to claim 1,
The first connecting part is a bracket having a through hole,
The tightening mechanism section is connected to the first connected section of the fixing member, and includes a bolt whose other end can be inserted through the through hole, and a nut that is screwed into the bolt inserted through the through hole. and the first connected portion can be displaced closer to the nut by rotation of the nut;
Measuring device. The measuring device according to claim 1 or 2,
The fixing member has a plurality of second connected portions that are selectable according to the outer diameter of the measurement target object in the longitudinal direction of the fixing member.
Measuring device. The measuring device according to any one of claims 1 to 3,
The fixing member is a roller chain,
The second connecting part is a bracket having a through hole,
The second connected portion is connected to the second connecting portion by a bolt that passes through the through hole and between the rollers at the location, and a nut that is screwed into the bolt.
Measuring device. The measuring device according to any one of claims 1 to 4,
A contact point where one end of the vibration probe comes into contact with the surface of the measurement object and a contact point where one end of the temperature probe comes into contact with the surface of the measurement object are arranged to be aligned in the predetermined direction. and
When viewed from the front in the direction of the tube axis of the measurement target, one end of the vibration probe and one end of the temperature probe contact the surface of the measurement target so as to point toward the tube axis of the measurement target;
Measuring device. The measuring device according to any one of claims 1 to 5,
The probe case further includes a cylindrical case member and a bottom member disposed to close at least a part of an opening on the measurement target side of the case member,
The bottom member has a through hole in a portion through which the vibration probe and the temperature probe are inserted,
Each of the vibration probe and the temperature probe is fixed to the bottom member in direct contact with a peripheral surface surrounding the through hole.
Measuring device.