JP6344051B2 - Housing for rotating equipment and equipment for rotating equipment - Google Patents

Description

  The present invention relates to a rotating device housing that houses a rotating device such as a motor, and a rotating device facility including the rotating device housing.

  In a housing (such as a motor housing) that accommodates a rotating device such as a motor, for example, one end of the rotating shaft of the rotating device protrudes outside the housing so that the one end of the rotating shaft can rotate outside the housing. And through portions for various purposes, such as ventilation through portions that allow ventilation (for example, cooling of rotating equipment by blowing air from outside to inside of the housing) between the outside and inside of the housing. Yes.

  In the rotary shaft penetrating portion, an inevitable gap (for example, an annular gap extending in the outer circumferential direction of the rotary shaft) can be formed between the rotary shaft penetrating portion and the rotary shaft, and therefore a seal member is provided in the gap. The technique is taken (for example, refer patent documents 1-3).

  The inevitable gaps as described above are also formed in other through portions. For example, in the ventilation penetration part, an opening / closing door (for example, an opening / closing door provided via a hinge at the opening edge of the outer opening, etc.) is provided on one opening side of the ventilation penetration part, and the opening / closing door is installed as necessary. There is a structure that closes the door to block the opening and suppresses (blocks) airflow, and between the opening and closing door and the ventilation penetration when closing (for example, a structure in which the peripheral edge of the opening and closing door contacts the opening edge to close the door) In this case, an unavoidable gap (for example, an annular gap extending along the opening edge) can be formed between the peripheral edge and the opening edge. For this reason, it is desirable to provide a sealing property at the time of closing of the open / close door by providing a seal member in advance at a position of a gap that can be formed in the ventilation through portion.

  As a technique for improving the sealing performance, a plurality of sealing members are applied to the gap (for example, a gland packing or a lip-shaped sealing member is used in combination) or a large shape is applied (for example, in the case of an annular sealing member, the diameter in the cross-sectional direction) There is a technique to apply a large one).

JP 2006-174581 A JP 2006-187076 A JP 2003-120571 A

  However, if the sealing performance is simply increased in the gap between the penetrating parts as described above, in the case of the rotating shaft penetrating part, the driving of the rotating device (rotation of the rotating shaft) is hindered, and in the case of the venting penetrating part, it is opened and closed. There is a possibility that the purpose required for each penetrating part will be hindered, such as the door closing operation (blocking of ventilation, etc.) being hindered. On the other hand, if the sealing property is suppressed so that the purpose required for the penetration portion is not hindered, the waterproof sealing property becomes insufficient.For example, when the periphery of the housing is submerged, the inside of the housing is also submerged to damage the rotating equipment. There is a risk of doing.

  For this reason, in the rotary apparatus installed in the condition where the circumference | surroundings of a housing can be flooded as mentioned above, it was restricted to what has waterproofness, such as a submersible motor.

  The present invention has been made in view of such technical problems, and is waterproofed as necessary in a gap formed in the through portion so as not to hinder the purpose required of the through portion of the housing for a rotating device. An object of the present invention is to provide a rotating device housing and a rotating device facility provided with the rotating device housing so as to obtain a sealing property.

  The housing for rotating equipment and the equipment for rotating equipment according to the present invention are creations that can solve the above-described problems, and one aspect of the housing for rotating equipment is a housing that houses the rotating equipment, and a through portion that is formed through the housing. And a waterproof seal member provided in a gap formed in the penetrating portion, wherein the waterproof seal member has an air tube that expands by injecting air.

  The penetration portion may be a ventilation penetration portion that ventilates the inside of the housing. In addition, an opening / closing door that opens and closes one opening of the ventilation through-hole is provided, and the air tube is provided at a position of a gap formed between the opening / closing door and the opening edge of the opening when the door is closed. Things can be used. The opening / closing door may be opened / closed via an air cylinder device. Moreover, what has the limit switch which detects opening / closing of the said opening / closing door may be used. The gap may be an annular gap, and the air tube may be formed in an annular shape extending along the annular gap.

  One aspect of the rotating equipment facility including the rotating equipment housing includes an air tank that stores air and a supply pipe that supplies air from the air tank to the housing side. Moreover, what provided the release valve which releases the air inject | poured in the said air tube may be used. And a monitoring device for monitoring the inundation situation around the housing, and a monitoring control means for controlling the driving of the rotating device based on the monitoring result by the monitoring device and for controlling the air supply to the housing by the supply pipe. It may be good.

  As described above, according to the present invention, it is possible to obtain a waterproof seal as needed in the gap formed in the through portion so as not to hinder the purpose required of the through portion of the housing for rotating equipment. It becomes.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which shows an example of the plant | facility to which the housing for rotary devices and rotary device equipment by this embodiment are applied. BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which shows an example of the housing for rotary devices and rotary device equipment by this embodiment. The schematic sectional drawing which shows an example of the rotating shaft penetration part of this embodiment (when waterproof sealing property is unnecessary). The schematic sectional drawing which shows an example of the rotating shaft penetration part of this embodiment (when waterproof sealing property is required). BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which shows an example of the door opening state of the opening-and-closing door in the ventilation penetration part of this embodiment (The figure which faced the ventilation penetration part from the inside; the figure which abbreviate | omitted the locking means). FIG. 6 is a schematic cross-sectional view showing an example of an open / close state of the open / close door in the ventilation penetration portion of the present embodiment (cross-sectional view taken along the line XX in FIG. 5; a view having a lock unit). FIG. 5 is a schematic cross-sectional view showing an example of a closed state of the open / close door in the ventilation penetrating portion of the present embodiment (cross-sectional view taken along the line XX of FIG. 5; a view having a lock unit).

  The rotary device housing and the rotary device facility according to the embodiment of the present invention waterproof a mere seal member such as a gland packing and a lip-shaped seal member in a gap inevitably formed in a through portion of the housing that houses the rotary device. Rather than being applied as a member, by applying one having an air tube that expands by air injection, the purpose required for each penetrating part is not hindered, and in the gap as needed A sufficient waterproof seal is obtained.

  The rotating device housing and the rotating device equipment of the present embodiment can be used in various fields, for example, as long as sufficient waterproof sealability can be obtained by the air tube in the gap formed in the penetrating portion as described above. Various changes can be made by applying technical common sense as appropriate, and examples thereof include the following.

<Example>
FIG. 1 shows an example of a facility in which a rotating device housing (reference numeral 12 described later) and a rotating equipment facility (reference numeral 11 described later) are installed according to the present embodiment. The sewage pump facility is configured to supply the sewage flowing in from 1a to the sedimentation basin 1b and remove pebbles, sand, and the like, and then supply it to the diversion tank 1e through the pump well 1c and the outflow dredger 1d. Reference numeral 1f is a gate disposed between the flowing water trough 1a and the sand basin 1b, reference numeral 1g is a screen disposed between the sand basin 1b and the pump well 1c, reference numeral P is a pump disposed in the pump well 1c, reference numeral 1h Is a valve disposed between the pump P and the outflow rod 1d, symbol M is a motor which is a rotating device that drives the pump P, and symbol 1i indicates a building of the pump facility 1.

  In the building 1i, the flowing water trough 1a, the sand basin 1b, and the pump well 1c are arranged in the underground part, the pump P is arranged in the second basement floor B2F, and the motor M is arranged in the first basement floor B1F. It has become. Reference numeral 1j is a protective wall provided on the ground GL for protecting the building 1i (for example, preventing inundation from the sea, rivers, etc.). In addition, a monitoring device 7 for monitoring the flooding situation around the housing 12 (situation where it can be flooded or flooded), for example, monitoring the water level or flooding situation around the building 1i, as shown in FIG. 1j and near the underground part of the building 1i, respectively, and can be monitored by monitoring control means (not shown) (for example, driving control of the motor M and control of air supply described later (controlling the electromagnetic valve 5b etc.)). You may comprise.

  For example, as shown in FIG. 2, the motor M is accommodated in a housing 12 including a peripheral wall 12 a having a shape capable of accommodating the motor M, and is supported by a support base 12 b so that the pump P can be driven. In the housing 12, a through-hole (for example, a rotary shaft through-hole 13 and a ventilation through-hole 3 described later) corresponding to various purposes is formed, and an annular gap (for example, a below-described gap 10a described later) that can be formed in the through-hole. , 10b) is provided with a waterproof seal member (for example, waterproof seal members 15 and 33 described later) for obtaining a sufficient waterproof seal property as required.

<Example of penetration part>
As shown in FIGS. 2 to 4, a rotating shaft penetrating portion 13 that penetrates the peripheral wall 12 a is formed on the rotating shaft 14 side of the motor M of the housing 12 (on the second basement B2F side in FIG. 1). One end portion 14 a of the rotating shaft 14 protrudes from the inside of the housing 12 to the outside through the shaft penetrating portion 13. A pump P on the second basement floor B2F is connected to one end portion 14a of the protruding rotating shaft 14 (detailed description of the connection structure is omitted), and the pump P can be driven by the rotation of the rotating shaft 14.

  In particular, as shown in FIGS. 3 and 4, an annular gap 10 a formed between the outer opening 13 a side of the rotary shaft penetrating portion 13 and the outer peripheral surface of the rotary shaft 14 extends along the gap 10 a. An annular waterproof seal member 15 is provided. In this waterproof seal member 15, an annular air tube 15a that extends along the gap 10a and expands by air injection, and an annular air tube holder 15b that extends along the air tube 15a and holds the air tube 15a. It has the composition which has. The waterproof seal member 15 can be configured to be detachably attached to the opening edge of the outer opening 13a of the housing 12 (for example, a configuration applicable to an existing rotating device) by unitizing, for example.

  The air tube 15a is formed in a hollow ring shape by an elastic material such as rubber or synthetic resin, for example. Before injecting air (in an unexpanded state), as shown in FIG. After being in contact with the outer peripheral surface of the rotating shaft 14 and injecting air (expanded state), the inner peripheral surface is in contact with the outer peripheral surface of the rotating shaft 14 as shown in FIG. Can be sealed. The air tube holder 15b is formed in an annular shape by a hard material such as metal, for example, and is detachably attached to the opening edge of the outer opening 13a (the outer surface of the housing 12) by a fastening member (screw or the like) 16. It has been. The air tube holder 15b has a U-shaped cross section, and the U-shaped opening forms a recess 15c facing the outer peripheral surface of the rotary shaft 14, and the air tube 15a housed and held in the recess 15c When expanded, the inner peripheral surface of the air tube 15a is configured to come into contact with the outer peripheral surface of the rotating shaft 14 as described above.

  3 and 4, reference numeral 21 denotes a rotary bearing, and reference numeral 22 denotes a seal member (general seal member) disposed inside the waterproof seal member 15. The seal member 22 includes a cylindrical base portion 22a and a lip portion (tongue piece portion) 22b formed on the inner periphery of the base portion 22a, and is formed in an annular shape with a flexible material such as rubber. Yes. The base portion 22 a is attached to the housing 12, and the tip end portion of the lip portion 22 b is in contact with the outer peripheral surface of the rotating shaft 14. The seal member 22 is always in contact with the peripheral surface of the rotating shaft 14 (always unlike the waterproof seal member 15), and is appropriately set so as not to prevent the rotation of the rotating shaft 14 in the contact. Is desirable.

<Other examples of penetration parts>
As shown in FIGS. 2 to 5, on the outer peripheral side of the motor M in the housing 12, a ventilation penetrating portion 3 that penetrates the peripheral wall 12 a is formed, and the housing 12 is interposed through the venting through portion 3. For example, the motor M can be cooled (for example, the air-cooled motor M can be cooled) by blowing air from the outside to the inside of the housing 12.

  In particular, as shown in FIGS. 5 to 7, on the outer opening 3 a side of the ventilation penetrating portion 3, there is a door that opens and closes the outer opening 3 a (for example, opened and closed by an air cylinder device 34 described later). An opening / closing door 31 is provided which can shield (open) the ventilation 3a by blocking the opening 3a. The opening / closing door 31 has a shape (a rectangular flat plate shape in FIGS. 5 to 7) that can shield the outer opening 3 a of the ventilation penetrating portion 3, and the rotation support member 30 a located on the opening edge side of the outer opening 3 a. It is supported via the opening and closing. In addition, the opening edge of the outer opening 3a is a frame extending along the opening edge and is engaged with the peripheral edge of the door closing side surface 31a of the door 31 when the door is closed (the periphery of the door closing side surface 31a). An annular) receiving frame 32 extending so as to face the edge side is provided.

  When the opening / closing door 31 that opens and closes so as to shield the outer opening 3a as described above is provided, when the opening / closing door 31 is closed, the opening / closing door is located between the peripheral edge of the side surface 31a in the closing direction and the receiving frame 32 (that is, the opening / closing door when the door is closed). 31 and an opening edge of the outer opening 3a), an annular gap 10b is formed. The gap 10b is provided with an annular waterproof seal member 33 extending along the gap 10b. In this waterproof seal member 33, an annular air tube 33a that extends along the gap 10b and expands when air is injected, and an air tube holder 33b that extends along the air tube 33a and holds the air tube 33a, ,have. The waterproof seal member 33 is configured to be detachably attached to the opening edge of the outer opening 3a of the housing 12 (removable to the receiving frame 32), for example, by being unitized in the same manner as the waterproof seal member 15 described above (for example, existing The configuration can be applied to a rotating device of

  As the air tube 33a, for example, an air tube 15a that is formed in a hollow ring shape by an elastic material such as rubber or synthetic resin can be applied, and before injecting air (in an unexpanded state), As shown in FIG. 6, the surface of the air tube 33a on the door 31 side is kept in a non-contact state with the door-closing side surface 31a of the door 31 when the door is closed. On the other hand, after injecting air (expanded state), as shown in FIG. 7, the surface of the air tube 33a on the door 31 side comes into contact with the side surface 31a in the closing direction of the door 31 when the door is closed, and the gap 10b Can be sealed. The air tube holder 33b is formed in an annular shape by a hard material such as metal, for example, similarly to the air tube holder 15b, and is attached to the open / close door 31 side of the receiving frame 32. The air tube holder 33b has a U-shaped cross section, and the U-shaped opening forms a recess 33c facing the door closing side surface 31a. The air tube 33a housed and held in the recess 33c expands. In this case, the surface of the air tube 33a on the side of the opening / closing door 31 is configured to come into contact with the side surface 31a in the closing direction of the opening / closing door 31 when the door is closed as described above.

  Reference numeral 34 denotes an air cylinder device that has a cylinder portion 34a and a piston portion 34b, and drives the piston portion 34b by injecting air into the cylinder portion 34a to open and close the open / close door 31. In the air cylinder device 34 of FIGS. 5 to 7, the cylinder portion 34 a is rotatably supported on the inner peripheral side of the receiving frame 32 via a rotation support member 35 a, and the piston portion 34 b is a side surface in the closing direction of the opening / closing door 31. It is configured to be rotatable with respect to 31a via a rotation support member 35b so that the door 31 can be opened and closed.

  Reference numeral 36 denotes a locking means for holding the open / close door 31 in the closed state. The structure of the locking means 36 is not particularly limited. In FIG. 7, however, the locking means 36 is provided at the peripheral edge of the opening / closing door 31 so as to be rotatable in the opening / closing direction of the opening / closing door 31 (illustrated). The engagement claw portion 36a urged in the closing direction by the omission) and a projection provided on the peripheral edge of the receiving frame 32 so that the engagement claw portion 36a is hooked when the door 31 is closed (see FIG. And a fitting projection 36b that locks the door 31 so that the door 31 does not open (fitting and locking as shown in FIG. 7) (so-called snap fit). The structure of the formula. If the opening / closing door 31 is closed and the locking means 36 is locked, even if the air tube 33a of the waterproof seal member 33 is expanded, the closed opening / closing door 31 is prevented from opening. Become.

<Example of rotating equipment>
As a configuration for injecting air into the waterproof seal members 15 and 33 and the air cylinder device 34 of the housing 12, for example, there is a rotating equipment facility 11 including an air tank 4 for supplying air to the housing 2 as shown in FIG. 2.

  In the rotating equipment 11 of FIG. 2, a compressor (not shown) is provided via a suction pipe 4c provided with a check valve (for example, a valve for maintaining pressure) 4a, a suction valve (for example, a normally open valve) 4b, and the like. The air is sucked in and stored in the air tank 4. In the air tank 4 in FIG. 2, a safety valve 4d and a drain valve 4e are provided in order to store the filled air safely. Between the air tank 4 and the housing 12, a supply pipe 5 including a discharge valve (for example, a valve that is normally open) 5a, a solenoid valve 5b, a pressure monitoring switch 5c, and the like is disposed. It is configured to be supplied to the housing 12 side.

  On the housing 12 side of the supply pipe 5 (specifically, between the supply pipe 5 and the waterproof seal members 15 and 33), a check valve 6a, a pressure monitoring switch 6b, and a pressure release valve (for example, a manual release valve) ) The branch pipe 6 provided with 6c and the like is connected so that the air supplied through the supply pipe 5 can be dispersed and injected into the waterproof seal members 15 and 33, respectively. Further, the branch pipe 6 is configured such that air can be injected into the air cylinder device 34 in addition to the waterproof seal members 15 and 33, and the air cylinder device 34 can be driven to open and close the open / close door 31. Also good. Further, a device for monitoring the status of the housing 12, for example, a monitoring device 8 a such as a limit switch for monitoring the open / close status of the open / close door 31 (lock status by the lock means 36), or monitoring for monitoring the presence or absence of water in the housing 12. The apparatus 8b and the like may be installed as appropriate, and may be configured to be monitored by a monitoring control unit (not shown).

<Example of response to flooding>
As an example of a response to a situation in which the surroundings of the housing 12 can be submerged, the submergence situation (a state in which submersion or submersion can occur) around the housing 12 is performed via the monitoring device 7 arranged as shown in FIG. Monitoring is performed by a monitoring control unit (not shown), and driving of the motor M is stopped based on the monitoring result, or air is injected into the air tubes 15a and 33a of the air cylinder device 34 and the waterproof seal members 15 and 33, respectively. It is done.

  First, when the monitoring control means senses that the surroundings of the housing 12 can be submerged, the motor M is controlled to stop driving. Further, the solenoid valve 5b and the like of the supply pipe 5 are driven and controlled so that the air in the air tank 4 is supplied to the housing 12 side, and air is injected into the air cylinder device 34 via the branch pipe 6 to open and close the open / close door 31. Air is injected into the air tubes 15 a and 33 a of the doors (the door 31 is closed until the lock means 36 is locked) and the waterproof seal members 15 and 33. Thereby, air tube 15a, 33a expand | swells so that gap 10a, 10b may be filled, respectively, and can obtain desired waterproof sealing property.

  When the inundation situation is resolved and the safety of the housing 12 and the motor M can be confirmed (for example, when the operator confirms whether the motor M can be driven by checking the necessity if necessary), the gap Since the waterproof sealability in 10a and 10b is unnecessary, the air in the air cylinder device 34 and the waterproof seal members 15 and 33 is appropriately released through the pressure release valve 6c, and the open / close door 31 is opened (lock means 36). Is unlocked and the door 31 is opened). Thereby, in the rotating shaft penetration part 13, the air tube 15a is maintained in a non-contact state with the outer peripheral surface of the rotating shaft 14. Further, in the case of the ventilation penetration part 3, the door closing operation (blocking of ventilation, etc.) of the opening / closing door 31 is facilitated.

  As described above, the housing 12 can keep the air tube 15a of the rotary shaft penetrating portion 13 and the outer peripheral surface of the rotary shaft 14 in a non-contact state while the waterproof seal property is unnecessary in the gap 10a. Therefore, heat generation and energy loss due to friction between the two can be suppressed. Therefore, it can be said that the housing 12 can be applied to a high-speed rotating device. Further, if it is not necessary to bring the air tube 15a into contact with the outer peripheral surface of the rotating shaft 14, since it is not necessary to frequently refuel or the like, the maintenance becomes easy.

  Furthermore, according to the configuration using the air stored in the air tank 4 as described above, even if the power supply is cut off at the time of a disaster or the like, the air in the air tank 4 is relatively easily supplied to the housing 12. Therefore, it is possible to easily obtain a desired waterproof seal property in the rotary shaft penetrating portion 13 and the vent penetrating portion 3.

  Although the present invention has been described in detail only for the specific examples described above, it is obvious to those skilled in the art that various modifications can be made within the scope of the technical idea of the present invention. It is natural that such changes and the like belong to the scope of the claims.

  For example, the housing includes a housing that accommodates a rotating device, a ventilation through part formed through the housing, and an opening / closing means that opens and closes the ventilation penetration part. If it is added to the penetrating part and has a structure that retains the waterproof sealability until the water is eliminated, the same effect as the embodiment can be obtained. In the embodiment, the case where the motor is used as the rotating device is shown. However, the present invention is not limited to the motor, and can be sufficiently applied to various generators and other rotating devices. The same effect is obtained.

DESCRIPTION OF SYMBOLS 1 ... Sewerage pump facility 10a, 10b ... Gap 11 ... Rotating equipment 12 ... Housing 13 ... Rotating shaft penetration part 13a, 3a ... Outer opening 14 ... Rotating shaft 15, 33 ... Waterproof seal member 15a, 33a ... Air tube 3 ... Ventilation Penetration part 31 ... Opening / closing door 34 ... Air cylinder device 36 ... Locking means 4 ... Air tank 5 ... Supply pipe 6c ... Release valve 7, 8a, 8b ... Monitoring device

Claims (8)

A housing that houses the rotating device, a through-hole for ventilation formed in the housing, an open / close door that opens and closes one opening of the through-hole for ventilation, and a lock unit that holds the open / close door in a closed state when closed A waterproof seal member provided in a gap formed in the ventilation penetrating part,
The waterproof seal member, Ri Na has an air tube expanded by injection of air, the air tube is provided at a position of the gap formed between the opening edge of the door and the opening when the door is closed ,
A locking claw portion that is rotatably provided in the opening and closing direction of the opening and closing door at the peripheral edge of the opening and closing door and is biased in the closing direction;
Housing for rotating device the locking claw portion during closing of the door a projecting portion provided on the periphery of the opening edge, characterized in Rukoto such a a fitting protrusion to be fitted. The door has a housing for a rotary apparatus of claim 1, wherein the opening and closing via the air cylinder device. Claim 1 or 2 the housing for rotation device wherein a having a limit switch for sensing the opening and closing of the door. The rotary device housing according to any one of claims 1 to 3 , wherein the gap is an annular gap, and the air tube is formed in an annular shape extending along the annular gap. It is the installation provided with the housing for rotary devices in any one of Claims 1-4 ,
A rotating equipment facility comprising an air tank that stores air and a supply pipe that supplies air from the air tank to a housing side. The rotating equipment according to claim 5, further comprising a release valve that releases air injected into the air tube. A monitoring device for monitoring the inundation situation around the housing;
Rotation of the monitoring result controlling driving of the rotating equipment based on, and claims 5 or 6, wherein the supervisory control means for controlling the air supply to the housing by the supply pipe, comprising the to by the monitoring device Equipment facilities. A housing that houses the rotating device, a through-hole for ventilation formed in the housing, an open / close door that opens and closes one opening of the through-hole for ventilation, and a lock unit that holds the open / close door in a closed state when closed A waterproof seal member provided in a gap formed in the ventilation penetrating part ,
The waterproof seal member has an air tube that expands by injecting air, and the air tube is provided at a position of a gap formed between the opening / closing door and the opening edge of the opening at the time of closing,
A locking claw portion that is rotatably provided in the opening and closing direction of the opening and closing door at the peripheral edge of the opening and closing door and is biased in the closing direction;
A projection provided on the peripheral edge of the opening edge, and a fitting projection into which the locking claw is fitted when the door is closed,
A waterproof seal for the situation where the periphery of the housing has been submerged is added to the ventilation penetration,
A rotating equipment facility that maintains the waterproof sealing property until the water is eliminated.

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