JP5932682B2 - Large capacity piping connection system - Google Patents

Description

  The present invention relates to, for example, a piping connection system that connects a large amount of water supply hoses or a large-diameter piping to transport fluids such as water, gas, and oil.

  For example, a large-capacity water supply hose used for a large-capacity foam radiation system that can handle a large fire such as a fire in an oil storage tank of an oil complex, or a drainage pump connected to a drain pump when a natural disaster such as a flood occurs Large capacity water supply hoses are known.

  In particular, the large capacity water supply hose has, for example, a diameter of 400 mm, a standard length of the hose of 150 m, and a mass of 10 kg / m.

  The large-capacity water supply hose is provided with coupling fittings at both ends of the hose body, and a plurality of water feeding hoses or a water feeding pump and a water feeding hose are coupled to each other via the coupling fitting. Such a large-capacity water supply hose is usually wound around the drum of an extension vehicle. During the extension, the drum is driven to rotate and the large-capacity water supply hose is turned to the ground etc. An operation to join each other is performed and it is extended to the target place.

  However, assuming that a fire has occurred in an oil storage tank in an oil complex, large-capacity water supply is required, but the distance from the water source to the oil storage tank is a few kilometers, and dozens of It is necessary to connect and extend a large capacity water supply hose.

  Therefore, the operation | work which couple | bonds a large capacity | capacitance water supply hose mutually and the operation | work which cut | disconnects the coupling | bonding of the coupling fitting of the large capacity | capacitance water supply hoses after a water supply are a big burden for an operator. In particular, the work of disconnecting the coupling between large capacity water hoses after water supply is difficult even if the water supply is stopped and a large amount of water remains inside the hose, so that it is difficult to release the coupling of the metal fittings. Accompany. Moreover, after draining, it is difficult to release the coupling of the coupling fitting even when the inside of the hose has a negative pressure.

  On the other hand, the applicant has developed a joint fitting composed of a pair of joint bodies with the same structure without distinction between males and females that connect fire hoses and other hoses to each other or between liquid transport pipes. Registered (for example, refer to Patent Document 1).

Japanese Patent No. 3107507

  As described above, when a large-capacity water supply hose with a diameter of 400 mm is used, since the mass is 10 kg / m, the coupling fitting provided at the end of the hose is a coupling fitting without discrimination between male and female shown in Patent Document 1. Even if it is used, if a large amount of water remains inside the hose, or if the inside of the hose has a negative pressure after drainage, it is difficult to release the coupling of the coupling fitting.

The present invention has been made by paying attention to the above circumstances, and the object of the present invention is to facilitate the work of disconnecting the connection even when connecting pipes such as a large capacity water supply hose having a diameter of 400 mm. A high-capacity piping connection system that can be performed safely and that allows maintenance and inspection of equipment without stopping water flow .

The present invention is a hose cross or transporting liquid mass becomes provided with an intermediary fitting for connecting the hose and the large-diameter piping for transporting liquid mass, what the hose accommodated by winding A large-capacity piping connection system that is installed and put into use by extending it to the desired location ,
The intermediate fitting includes a first pipe body, a second pipe body, and a third pipe body having the same diameter as the pipes connected by the intermediate metal fitting, and proximal ends of the first to third pipe bodies. An intermediate bracket body having a coupling portion that couples the portions in communication with each other;
A three-way valve that is provided at the coupling portion of the intermediate metal body and is capable of communicating the first tube and the second tube or the first tube and the third tube;
A connection fitting having the same structure, which is provided at the tip of the first tube, the second tube, and the third tube and is connectable to the connection fitting of the hose or the pipe;
And at least two sets of the intermediate fittings are prepared,
Furthermore, the large-capacity piping connection system includes a first intermediate pipe body that is connected via the intermediate fitting to form a fluid main flow path,
A second intermediate pipe connected through the intermediate fitting to form a fluid sub-flow channel;
With
The pair of connection fittings connected to each other includes a pair of cylindrical connection fitting main bodies that respectively surround the pipe ends to be connected;
A seal portion provided on each of the pipe end portions located on the inner side of the connection fitting main body,
A sealing material that is fitted to these seal portions and has an inner diameter that maintains the diameter of the tubular body,
A plurality of fitting protrusions that are respectively provided in the pair of connection fitting main bodies surrounding the seal portions, and are arranged in the circumferential direction of the connection fitting main bodies and project in the axial direction;
A fitting recess formed between these fitting projections,
The fitting convex part and fitting concave part of the pair of connecting metal fittings are fitted in the axial direction to the fitting concave part and fitting convex part of the mating connecting metal fitting body,
These fitting projections engage with the fitting recesses of the mating connection fitting main body in the circumferential direction to restrict axial movement, and the locking collars that lock the pair of connection fitting main bodies in the axial direction. With
The diameter of the fluid main flow path formed by interposing the intermediate fitting in the middle of connecting the hoses or the pipes or the hose and the pipe is the same as the diameter of the fluid sub-flow path. .

According to a second aspect of the present invention, each intermediate tube has a connection fitting having the same structure that can be connected to the connection fitting at both ends, and at least one of the first intermediate tube and the second intermediate tube. The high capacity piping connection system according to claim 1 , wherein a strainer, a measuring device, or a drain pipe is provided in the pipeline.
The invention according to claim 3, fitting body, large pipes connected according to claim 1 or claim 2, characterized in that it is movable in the axial direction and the circumferential direction relative to the tube end System.

According to the present invention, there is an effect that the operation of disconnecting the connection can be easily and safely performed even when connecting pipes such as a large capacity water supply hose having a diameter of 400 mm . Moreover, according to the present invention, it is possible to provide a large-capacity piping connection system capable of maintaining and inspecting equipment without stopping water flow.

The front view of the intermediate | middle metal fitting which shows the 1st Embodiment of this invention. The front view which shows the same embodiment and shows the connection state of a metal fitting. The side view which showed the same embodiment and cut down a part of connection metal fitting. The same embodiment is shown, (a)-(c) is a figure of the different use condition of a medial pipe body. The front view of the metal fitting which shows the 2nd Embodiment of this invention. The front view which shows the same embodiment and shows the connection state of a metal fitting. The front view of an annular coupling member which shows the 3rd Embodiment of this invention. Sectional drawing which shows the same embodiment and shows a pair of cyclic | annular coupling member cut along the ABC line of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 4 show a first embodiment of a piping connection system, and the intermediate fitting 10 shown in FIG. 1 has a large capacity water supply hose (for example, a diameter of 400 mm, a standard length of 150 m, and a mass of 10 kg / m). Alternatively, the pipes are connected to each other or from the hose and the pipe.

  The intermediate metal body 11 of the intermediate metal 10 is formed of, for example, a metal material such as aluminum, and includes a first tube body 12, a second tube body 13, and a third tube body 14 having the same diameter. The proximal ends of the first tubular body 12, the second tubular body 13, and the third tubular body 14 have a coupling portion 15 coupled in a communication state, and this coupling portion 15 includes a known three-way valve. 16 is provided.

  A connecting fitting 17 having the same structure is provided at the tip of the first tubular body 12, the second tubular body 13 and the third tubular body 14, and this connecting fitting 17 is attached to the end of a hose or piping 18. A connection fitting 19 having the same structure as that of the provided connection fitting 17 can be connected.

  In the present embodiment, the first tubular body 12 and the second tubular body 13 are coupled in a straight line, and the third tubular body 14 connects the first tubular body 12 and the second tubular body 13. They are connected at right angles to the straight line. Further, a right-angled bent portion 14 a is provided in the middle of the third tubular body 14, and the distal end side is provided in parallel with the second tubular body 12.

  The intermediate fitting 10 configured as described above can selectively communicate the first tubular body 12 with the second tubular body 13 or the third tubular body 14 by switching the three-way valve 16. .

  The connection fittings 17 and 19 have basically the same structure as the connection fitting known from Japanese Patent No. 3107507, and are provided with a pair of annular fitting main bodies 20 as shown in FIG. A plurality of fitting projections 21 are integrally projected from the front end of the metal fitting body 20. These fitting convex portions 21 are arranged at equal intervals in the circumferential direction of the metal fitting body 20.

  Further, a space between these fitting convex portions 21 is formed as a fitting concave portion 22, and a stepped hook-like locking hook portion 23 is formed on one side surface 21 a of the fitting convex portion 21. . The tip corners of the other side surface 21b of these fitting convex portions 21 are formed in an arc shape to form a guide portion 24.

  Further, an urging mechanism 25 is provided on each of the other side surfaces 21b of the fitting convex portions 21. These urging mechanisms 25 are composed of a steel ball and a spring that urges the steel ball in the protruding direction, and these urging mechanisms 25 are embedded in the other side surface 21 b of these fitting convex portions 21. It is. Therefore, when these fitting convex portions 21 are fitted into the mating fitting concave portions 22, the steel balls come into contact with each other and are pressed against each other, and the other side surface 21 b of these fitting convex portions 21 is moved. Energize away from each other. As a result, the one side surface 21a of the fitting convex portion 21 is urged so as to be close to each other, and the locking collar portion 23 of the one side surface 21a is urged to engage with each other. ing.

  And when the joint part of a pair of metal fittings main body 20 is abutted in the axial direction, for example, the fitting convex part 21 of one metal fitting main body 20 is fitted in the fitting concave part 22 of the other metal fitting main body 20. In addition, the fitting convex portion 21 of the other metal fitting body 20 is fitted in the fitting concave portion 22 of the one metal fitting main body 20, and is fitted in a complementary manner. Similarly, the fitting convex part 21 of one metal fitting body 20 is fitted into the fitting concave part 22 of the other metal fitting body 20, and the fitting convex part 21 of the other metal fitting body 20 is fitted to the one metal fitting body 20. It fits in the fitting recess 22 and fits in a complementary manner.

  The fitting main body 20 of the connection fitting 17 is fitted into the engagement step portion 27 of the pipe end portion 26 of the first to third tube bodies 12, 13, 14 of the intermediate fitting 10, and the fitting main body 20 is fitted to the pipe end portion 26. The fitting main body 20 of the connection fitting 19 is fitted into the engagement step portion 29 of the pipe end portion 28 of the hose or piping 18, and the fitting main body 20 is connected to the pipe end. It is movable in the axial direction and the circumferential direction with respect to the portion 28. Further, an annular recess 30 is provided on the end surfaces of the pipe end portions 26 and 28, and an O-ring 31 as a rubber seal material is fitted into the annular recess 30, and the O-ring 31 is connected to the connection fittings 17 and 19. They are abutted at the time of connection and sealed fluid tightly.

  FIG. 2 shows a piping connection system using the intermediate fitting 10 and shows a state in which two sets of intermediate fittings 10 are connected by the intermediate pipe bodies 32 and 33. The intermediate pipe bodies 32 and 33 have the same structure, and connecting fittings 35 having the same structure as the connecting fittings 17 and 19 are provided at both ends of the straight pipe 34. The second pipe body 13 and the third pipe body 14 of the two sets of intermediate metal fittings 10 are connected to each other by the intermediate pipe bodies 32 and 33, and the fluid main channel A and the fluid subchannel (bypass channel) B are connected. And are formed.

  The intermediate tube bodies 32 and 33 are, for example, a strainer built-in tube body 36 shown in FIG. 4A, a drained tube body 37 shown in FIG. 4B, and a measuring device-attached tube body 38 shown in FIG. In the strainer-incorporated tube body 36 shown in (a), a cylindrical strainer 36b that captures foreign matter is detachably provided on the strainer support tube body 36a. In the pipe body 37 with water drain shown in (b), a known ball valve 37b is provided on the branch pipe body 37a, and the ball valve 37b is opened so that water can be drained. The tubular body 38 with a measuring device shown in (c) is provided with a connection port 38a having an internal thread, and a measuring instrument 38b such as a thermometer, a pressure gauge, a sight glass (spinner type) is attached thereto.

  Further, the connection fitting 17 of the first pipe 12 of the intermediate fitting 10 is connected to a connection fitting 19 provided at the end of a hose or piping 18.

  Here, for example, the intermediate tube bodies 32 and 33 are provided with the strainer-incorporated tube body 36 shown in FIG. 4A, and the fluid is circulated through the fluid main flow path A and the fluid sub-flow path B is used in a suspended state. In the case of the configuration, it is necessary to periodically replace or remove the strainer 36b provided in the intermediate pipe body 32 of the fluid main flow path A and clean it. However, in this case, the maintenance including the replacement of the strainer 36b without stopping the fluid flow can be achieved by switching the three-way valve 16 to pause the fluid main flow path A and flowing the fluid to the fluid sub-flow path B. I can work.

  Therefore, by providing the intermediate pipe bodies 32 and 33 with the drainage pipe body 37 shown in FIG. 4B, after the water supply is stopped, the connection fitting 17 and the hose or piping of the first pipe body 12 of the intermediate fitting 10 are provided. When removing the connection portion of the connector 18 to the connection fitting 19, first, the ball valve 37 b of the drained tube body 37 is opened, and the connection portion is removed after draining the water inside the hose or the piping 18. Can do. In addition, even after the drainage, when the inside of the hose or the piping 18 is at a negative pressure, the ball valve 37b can be opened to a positive pressure to safely remove the connecting portion.

  Further, by providing the intermediate pipe bodies 32 and 33 with a pipe body 38 with a measuring instrument such as a pressure gauge shown in FIG. 4C, the pressure of the fluid flowing through the fluid main flow path A and the fluid subflow path B can be reduced. It can be measured and is effective for usage patterns that require constant pressure monitoring.

  5 and 6 show a second embodiment, FIG. 5 is a front view of the intermediate fitting, and FIG. 6 is a front view of a piping connection system using the intermediate fitting. The intermediate metal body 41 of the intermediate metal 40 is composed of a main pipe body 42 and a branch pipe body 43 branched from the middle of the main pipe body 42. The branch pipe 43 is inclined (for example, 60 °) with respect to the axial center of the main pipe 42, and the intermediate fitting 40 can be connected to both ends of the main pipe 42 and the end of the branch pipe 43. A connection fitting 17 similar to that of the first embodiment is provided.

  FIG. 6 shows a state in which a plurality of intermediate fittings 40 are prepared, the intermediate fittings 40 are connected to each other, and the fluid main channel C and the branch channel D branching from the fluid main channel C are formed. Show. The connection fitting 17 of the main pipe body 42 of the intermediate fitting 40 constituting the fluid main flow path C and the connection fitting 17 of the branch pipe 43 of the intermediate fitting 40 constituting the branch flow path D are provided at the end of the hose or piping 18. By connecting the connecting metal fitting 19, multi-branching water can be collected or collected (merged).

  In addition, although the connection metal fittings 17 and 19 in 1st and 2nd embodiment used the connection metal fitting known by the patent 3107507 gazette, this invention is not limited to the said embodiment, FIG. 7 and 8 may be used. FIG. 7 is a front view of the connection fitting, and FIG. 8 is a sectional view showing a pair of connection fittings taken along the line A-B-C in FIG. 7, which is fitted to the intermediate fitting 10 of the first embodiment. The Storz connection fitting 55 is shown.

  As shown in FIGS. 7 and 8, the Storz connection fitting 55 is composed of a pair of annular connection members 56a and 56b having the same structure, and each of the annular connection members 56a and 56b includes a cylinder main body 57. These cylindrical main bodies 57 have a cylindrical shape, and, for example, two fitting convex portions 58 are provided so as to protrude in the axial direction at point-symmetrical positions around the axis O at the front end portion thereof. The fitting protrusions 58 are provided with substantially L-shaped locking flanges 58 a that protrude in the outer peripheral direction of the tube main body 57.

  A fitting recess 59 that is wider and deeper than the fitting projection 58 is provided on the right side of the fitting projection 58 so that the fitting projection 58 is fitted. An engagement receiving portion 60 is provided in the circumferential direction of the cylinder main body 57 further to the right of the fitting recess 59. The engagement receiving part 60 protrudes along the longitudinal direction of the concave groove 61 so as to narrow the opening width of the concave groove 61, and the locking hook part 58a. It is comprised from the engaging edge 61a to engage.

  The engaging edge portion 61a is provided with an inclined surface 62 and a stopper 63 so that the axial thickness of the cylinder body 57 gradually increases from the fitting recess 59 in the clockwise direction. Then, when the fitting convex portion 58 of one annular connecting member 56a is fitted into the fitting concave portion 59 of the other annular connecting member 56b and the annular connecting members 56a and 56b are rotated relatively clockwise, When the collar portion 58a is engaged with the engagement edge portion 61a and the locking collar portion 58a approaches the upward slope of the inclined surface 62, the annular connecting members 56a and 56b are drawn in the axial direction and the front end surfaces are joined to each other. It is supposed to be.

  The piping connection system of the present invention can be applied in a wide range such as connection of fire hose, connection of refrigerant piping and hose, supply piping for hydrogen and gasoline, piping for aerospace equipment and high pressure hose.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, the constituent elements over different embodiments may be combined.

  DESCRIPTION OF SYMBOLS 10 ... Intermediate | middle metal fitting, 11 ... Intermediate | middle metal fitting body, 12 ... 1st pipe body, 13 ... 2nd pipe body, 14 ... 3rd pipe body, 15 ... Connection part, 16 ... Three-way valve, 17, 19 ... Connection Metal fitting, 18 ... piping, 32, 33 ... intermediate metal fitting.

Claims (3)

A hose that transports a large volume of liquid, or a medium fitting that connects a hose that transports a large volume of liquid and a large-diameter pipe. A large-capacity piping connection system that is installed in a working state by bringing it to a place,
The intermediate fitting includes a first pipe body, a second pipe body, and a third pipe body having the same diameter as the pipes connected by the intermediate metal fitting, and proximal ends of the first to third pipe bodies. An intermediate bracket body having a coupling portion that couples the portions in communication with each other;
A three-way valve that is provided at the coupling portion of the intermediate metal body and is capable of communicating the first tube and the second tube or the first tube and the third tube;
A connection fitting having the same structure, which is provided at the tip of the first tube, the second tube, and the third tube and is connectable to the connection fitting of the hose or the pipe;
And at least two sets of the intermediate fittings are prepared,
Furthermore, the large-capacity piping connection system includes a first intermediate pipe body that is connected via the intermediate fitting to form a fluid main flow path,
A second intermediate pipe connected through the intermediate fitting to form a fluid sub-flow channel;
With
The pair of connection fittings connected to each other includes a pair of cylindrical connection fitting main bodies that respectively surround the pipe ends to be connected;
A seal portion provided on each of the pipe end portions located on the inner side of the connection fitting main body,
A sealing material that is fitted to these seal portions and has an inner diameter that maintains the diameter of the tubular body,
A plurality of fitting protrusions that are respectively provided in the pair of connection fitting main bodies surrounding the seal portions, and are arranged in the circumferential direction of the connection fitting main bodies and project in the axial direction;
A fitting recess formed between these fitting projections,
The fitting convex part and fitting concave part of the pair of connecting metal fittings are fitted in the axial direction to the fitting concave part and fitting convex part of the mating connecting metal fitting body,
These fitting projections engage with the fitting recesses of the mating connection fitting main body in the circumferential direction to restrict axial movement, and the locking collars that lock the pair of connection fitting main bodies in the axial direction. With
The diameter of the fluid main flow path formed by interposing the intermediate fitting in the middle of connecting the hoses or the pipes or the hose and the pipe is the same as the diameter of the fluid sub-flow path. Large capacity piping connection system. Each intermediate tube has a connection fitting having the same structure that can be connected to the connection fitting at both ends. A strainer, a measurement is provided in at least one of the first intermediate tube and the second intermediate tube. 2. The large capacity piping connection system according to claim 1, wherein a device or a drain pipe is provided. The large-capacity piping connection system according to claim 1 or 2 , wherein the connection fitting main body is movable in an axial direction and a circumferential direction with respect to the pipe end portion.

Images