CN211452737U

CN211452737U - Guide valve leakage checking device of guide type safety valve

Info

Publication number: CN211452737U
Application number: CN201922383238.8U
Authority: CN
Inventors: 方晓敏; 张影; 杨勇; 丁志强; 滕舟波; 吕兴刚
Original assignee: East China Power Test and Research Institute Co Ltd
Current assignee: East China Power Test and Research Institute Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-09-08
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a guide formula relief valve pilot valve leak hunting device, including detection case, main valve and pilot valve, the detection case cover is established in the outside of pilot valve, and the top threaded connection of detection case has sealed lid, and the front from the top down fixedly connected with operating panel and the gaseous detection box in proper order of detection case, the utility model relates to a guide formula relief valve technical field. The guide valve leakage detection device of the guide safety valve and the leakage detection method thereof have the advantages that the guide valve is covered by the sealed detection box, gas leaked by the guide valve can be kept not to be leaked to the outside, the glass tube is communicated with the detection box, part of gas can be guided into the glass tube when the gas is leaked by the guide valve, indicating oil in the glass tube is pushed by air pressure, whether the gas is leaked or not can be visually seen through the height difference of the indicating oil on two sides in the U-shaped tube and the matching of the scale labels, power consumption is avoided, faults are not prone to occurring, meanwhile, the glass tube is provided with the recess, the indicating oil is not prone to being leaked when the glass tube is reversed, and the guide valve.

Description

Guide valve leakage checking device of guide type safety valve

Technical Field

The utility model relates to a pilot operated relief valve technical field specifically is a device is looked for to pilot operated relief valve pilot valve.

Background

The pilot operated relief valve (also called pulse relief valve) is an indirect load relief valve, which consists of a main valve driven by a medium discharged from a pilot valve and a pilot valve (also called secondary valve) which is a standard spring direct load relief valve, and is also called pulse relief valve because the pressure in the system is in a pulse form. When the medium turns to the opening pressure of the pilot valve, the pilot valve is opened first, and the discharged medium enters the main valve from the bypass pipe. The safety valve is mainly used for boiler, pressure container and pipeline, and its control pressure is not greater than specified value, so that it can play an important role in protecting personal safety and equipment operation.

The pilot-operated safety valve mainly bears pressure and is a pilot valve, so the air tightness of the pilot valve is important, but in the working process, the leakage of a small amount of gas or liquid is difficult to detect, and further danger is easy to occur.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art not enough, the utility model provides a device is checked for leaks to guide formula relief valve pilot valve has solved in the course of the work, and the disclosure of a small amount of gas or liquid in the pilot valve hardly sees out, and then appears danger easily, and current detection method generally tears the pilot valve down and detects alone, can't detect in the course of the work, and then the periodic detection of being not convenient for, and a small amount of gas or liquid reveal, the problem that current detection device also hardly detected out.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a guide type safety valve guide valve leakage detection device comprises a detection box, a main valve and a guide valve, wherein the detection box is sleeved outside the guide valve, a sealing cover is in threaded connection with the top of the detection box, an operation panel and a gas detection box are fixedly connected to the front of the detection box from top to bottom in sequence, the gas detection box comprises a bottom plate, the back of the bottom plate is fixedly connected with the front of the detection box, a protective shell is fixedly connected to the outside of the bottom plate, a convex lens is fixedly connected to the front side of the inner surface of the protective shell, a glass tube is fixedly connected to the middle of the front of the bottom plate through a fixing strip, the glass tube comprises a U-shaped tube and an air inlet tube, an arc-shaped section is arranged on the right side of the U-shaped tube, the right side of the arc-shaped tube is communicated with the bottom end of the air inlet tube, depressions are arranged at the, the front of bottom plate just is located the inboard centre of U type pipe and pastes and has the scale label, the top of intake pipe runs through the detection case and extends to the inside of detection case, the internal surface of detection case just is located the outside fixedly connected with protective sheath on intake pipe top.

Preferably, the fixed cover of center fixedly connected with at sealed lid internal surface top, the inside joint of fixed cover has the motor, and the bottom fixedly connected with flabellum of motor output shaft, the top of sealed lid just is located the outside fixedly connected with fan box of flabellum, and the air inlet has been seted up at the top of fan box side.

Preferably, the bottom of the inner surface of the fan box is fixedly connected with an abutting frame, the bottom of the abutting frame is in compression joint with the top of the pilot valve, a fixing plate is fixedly connected below the inner surface of the detection box, and the fixing plate is sleeved outside the pilot valve.

Preferably, the right side fixedly connected with of detection case internal surface detects the box, equal fixedly connected with air guide mouth between the upper and lower both sides of detection box and the right side of detection case internal surface, and the upper and lower both sides of detection box all set up the gas pocket with air guide mouth looks adaptation, the left side from the top down of detection case internal surface fixedly connected with humidity transducer and controller in proper order.

Preferably, the right side and the bottom of the detection box are fixedly connected with sealing pipes, the sealing pipes are fixedly connected with sealing rings inside, the sealing pipes are connected with a first connecting pipe fitting and a second connecting pipe fitting in a sliding mode inside respectively, the left end of the first connecting pipe fitting and the top end of the second connecting pipe fitting are communicated with the bottom end and the right side of the pilot valve respectively, and the right end of the first connecting pipe fitting and the bottom end of the second connecting pipe fitting are communicated with the main valve through hoses.

Preferably, the equal fixedly connected with ladder-shaped ring in position that the surface of detection case and sealed lid and be connected, two the crimping has first seal ring, two between the ladder-shaped ring the left and right sides of ladder-shaped ring surface all overlaps and is equipped with the staple bolt, and through bolt fixed connection between two staple bolts, the surface of detection case and sealed lid just is located the inboard of staple bolt and the equal fixedly connected with second seal ring in upper and lower both sides of ladder-shaped ring.

Preferably, there is a first steel frame fixedly connected with the bottom of the right side of the detection box and the top of the main valve through bolts, there is a second steel frame fixedly connected with the bottom of the first steel frame and the bottom of the detection box through bolts, and the right side of the second steel frame abuts against the left side of the main valve.

Preferably, operating panel includes warning light, display screen and start button, the controller includes treater and data contrast module, and the treater realizes both way junction with operating panel and data contrast module respectively, operating panel's output respectively with motor and humidity transducer's input electric connection, humidity transducer's output and the input electric connection of treater.

(III) advantageous effects

The utility model provides a leak hunting device of guide type relief valve pilot valve. Compared with the prior art, the method has the following beneficial effects:

(1) the guide valve leakage detection device of the guide safety valve comprises a detection box, wherein the detection box is sleeved outside a guide valve, the top of the detection box is in threaded connection with a sealing cover, the front of the detection box is fixedly connected with an operation panel and a gas detection box in sequence from top to bottom, the gas detection box comprises a bottom plate, the back of the bottom plate is fixedly connected with the front of the detection box, the outside of the bottom plate is fixedly connected with a protective shell, the front side of the inner surface of the protective shell is fixedly connected with a convex lens, the middle of the front of the bottom plate is fixedly connected with a glass tube through a fixing strip, the glass tube comprises a U-shaped tube and an air inlet tube, the right side of the U-shaped tube is provided with an arc-shaped section, the right side of the arc-shaped section is communicated with the bottom end of the air inlet tube, the connecting part of the arc-shaped tube and, the top of intake pipe runs through the detection case and extends to the inside of detection case, the internal surface of detection case and the outside fixedly connected with protective sheath that is located the intake pipe top, cover the pilot valve through setting up sealed detection case, can keep the gas that the pilot valve reveals not to reveal to the external world, and set up glass pipe and detection case intercommunication, can be in the leading-in glass pipe of part gas when the pilot valve reveals gas, utilize atmospheric pressure to promote the interior instruction oil of glass pipe, whether there is gas to reveal through the instruction oil difference in height cooperation scale label of U type intraductal both sides, no consumption and difficult trouble, simultaneously at glass pipeOn the upper partThe concave is arranged, so that the indicating oil is not easy to leak out when the glass tube is turned upside down, and the glass tube can be used for a long time.

(2) The guide valve leakage checking device of the guide safety valve is characterized in that a fixing sleeve is fixedly connected to the center of the top of the inner surface of a sealing cover, a motor is clamped inside the fixing sleeve, a fan blade is fixedly connected to the bottom end of an output shaft of the motor, a fan box is fixedly connected to the top of the sealing cover and positioned outside the fan blade, an air inlet is formed in the top of the side surface of the fan box, a detection box is fixedly connected to the right side of the inner surface of the detection box, air guide nozzles are fixedly connected between the upper side and the lower side of the detection box and the right side of the inner surface of the detection box, air holes matched with the air guide nozzles are formed in the upper side and the lower side of the detection box, a humidity sensor and a controller are sequentially and fixedly connected to the left side of the inner surface of the detection box from top to bottom, the motor is matched with the fan blade, and the gas guide nozzle is guided into the detection box for detection, so that whether the guide valve leaks water can be judged, the water leakage at any position of the guide valve can be detected, and the detection is convenient.

(3) The leak detection device for the pilot valve of the guide safety valve is characterized in that sealing pipes are fixedly connected to the right side and the bottom of a detection box, sealing rings are fixedly connected to the inner parts of the sealing pipes, the inner parts of the two sealing pipes are respectively connected with a first connecting pipe fitting and a second connecting pipe fitting in a sliding mode, the left end of the first connecting pipe fitting and the top end of the second connecting pipe fitting are respectively communicated with the bottom end and the right side of the pilot valve, the right end of the first connecting pipe fitting and the bottom end of the second connecting pipe fitting are respectively communicated with a main valve through hoses, ladder-shaped rings are fixedly connected to the outer surfaces of the detection box and the sealing cover at the positions where the detection box is connected with the outer surfaces of the sealing covers, first sealing gaskets are pressed between the two ladder-shaped rings, the two hoops are sleeved on the left side and the right side of the outer surfaces of the two ladder-shaped rings, and second sealing, the two layers of sealing rings are arranged at the positions where the first connecting pipe fitting and the second connecting pipe fitting penetrate through the detection box, the hoop matched with the first sealing washer and the second sealing washer is arranged at the position where the detection box is connected with the sealing cover, the device can be strictly sealed, the accuracy of air leakage detection and water leakage detection is ensured, the first connecting pipe fitting and the second connecting pipe fitting are used as transfer pieces to be connected with the main valve and the pilot valve, the normal work of the main valve and the pilot valve is not influenced, and periodic detection is facilitated.

(4) This lead formula relief valve pilot valve leak hunting device, through the first steelframe of bolt fixedly connected with between the bottom on detection case right side and the top of main valve, through bolt fixedly connected with second steelframe between the bottom of first steelframe and the bottom of detection case, and the right side of second steelframe and the left side butt of main valve, the bottom welding on detection case right side has the fixing bolt same with the pilot valve right side, it can be fixed with detection case and main valve to utilize original first steelframe, add the second steelframe again and strengthen the support, the stability of device operation has been guaranteed, and easily installation.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a cross-sectional view of the structure of the present invention;

FIG. 3 is a front view of the internal structure of the gas detection box of the present invention;

FIG. 4 is a top view of the internal structure of the gas detection box of the present invention;

fig. 5 is a sectional view of the fan case structure of the present invention;

FIG. 6 is a cross-sectional view of the structure of the detection box and the air guide nozzle of the present invention;

fig. 7 is an enlarged view of a portion a of fig. 2 according to the present invention;

fig. 8 is a cross-sectional view of the seal tube structure of the present invention;

fig. 9 is a front view of the operation panel structure of the present invention;

fig. 10 is a schematic block diagram of the system of the present invention.

In the figure, 1-a detection box, 2-a main valve, 3-a pilot valve, 4-a sealing ring, 5-a sealing cover, 6-an operation panel, 61-a warning lamp, 62-a display screen, 63-a start button, 7-a gas detection box, 8-a bottom plate, 9-a protective shell, 10-a convex lens, 11-a glass tube, 12-a U-shaped tube, 13-an air inlet tube, 14-an arc section, 15-a recess, 16-a scale label, 17-a fixed sleeve, 18-a motor, 19-a fan blade, 20-a fan box, 21-an air inlet, 22-an abutting frame, 23-a fixed plate, 24-a detection box, 25-an air guide nozzle, 26-a humidity sensor, 27-a controller, 28-a sealing tube, 29-a first connecting pipe fitting, 29-a first, 30-a second connecting pipe fitting, 31-a hose, 32-a trapezoidal ring, 33-an anchor ear, 34-a second sealing washer, 35-a first steel frame, 36-a second steel frame, 37-a processor, 38-a data comparison module, 39-a first sealing washer and 40-a protective sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-10, an embodiment of the present invention provides a technical solution: a guide valve leakage checking device of a guide type safety valve comprises a detection box 1, a main valve 2 and a guide valve 3, wherein the detection box 1 is sleeved outside the guide valve 3, the right side of the inner surface of the detection box 1 is fixedly connected with a detection box 24, air guide nozzles 25 are fixedly connected between the upper side and the lower side of the detection box 24 and the right side of the inner surface of the detection box 1, air holes matched with the air guide nozzles 25 are formed in the upper side and the lower side of the detection box 24, a humidity sensor 26 and a controller 27 are fixedly connected on the left side of the inner surface of the detection box 24 from top to bottom in sequence, a motor 18 is matched with a fan blade 19 to drive air in the detection box 1 to flow, if the guide valve 3 has a water leakage problem, air flow can promote volatilization of water drops, so that the humidity in the detection box 1 is increased, then the air guide nozzle 25 is guided into the detection box 24 for detection, whether the guide valve 3 leaks, the detection is convenient, the right side and the bottom of the detection box 1 are fixedly connected with a sealing pipe 28, the inside of the sealing pipe 28 is fixedly connected with a sealing ring 4, the inside of the two sealing pipes 28 is respectively connected with a first connecting pipe fitting 29 and a second connecting pipe fitting 30 in a sliding manner, the left end of the first connecting pipe fitting 29 and the top end of the second connecting pipe fitting 30 are respectively communicated with the bottom end and the right side of the pilot valve 3, the right end of the first connecting pipe fitting 29 and the bottom end of the second connecting pipe fitting 30 are both communicated with the main valve 2 through a hose 31, the outer surfaces of the detection box 1 and the sealing cover 5 are fixedly connected with a ladder-shaped ring 32 at the connecting position, a first sealing washer 39 is pressed between the two ladder-shaped rings 32, the left side and the right side of the outer surfaces of the two ladder-shaped rings 32 are both sleeved with anchor ears 33, the two anchor ears 33 are fixedly connected through bolts, the outer surfaces of the detection box 1 and the sealing cover, the position of the first connecting pipe fitting 29 and the second connecting pipe fitting 30 penetrating through the detection box 1 is provided with two layers of sealing rings 4, the position of the detection box 1 connected with the sealing cover 5 is provided with the hoop 33 matched with the first sealing washer 39 and the second sealing washer 34, the device can be strictly sealed, the accuracy of air leakage detection and water leakage detection is ensured, the first connecting pipe fitting 29 and the second connecting pipe fitting 30 are used as a transfer piece to be connected with the main valve 2 and the pilot valve 3, the normal work of the main valve 2 and the pilot valve 3 is not influenced, the regular detection is convenient, the first steel frame 35 is fixedly connected between the bottom of the right side of the detection box 1 and the top of the main valve 2 through bolts, the second steel frame 36 is fixedly connected between the bottom of the first steel frame 35 and the bottom of the detection box 1 through bolts, the right side of the second steel frame 36 is abutted to the left side of the main valve 2, the bottom of the right side of, the detection box 1 can be fixed with the main valve 2 by utilizing the original first steel frame 35, and then the second steel frame 36 is additionally arranged for strengthening support, thereby ensuring the stability of the operation of the device and being easy to install, the top of the detection box 1 is in threaded connection with the sealing cover 5, the center of the top of the inner surface of the sealing cover 5 is fixedly connected with the fixing sleeve 17, the motor 18 is clamped in the fixing sleeve 17, the bottom end of the output shaft of the motor 18 is fixedly connected with the fan blade 19, the top of the sealing cover 5 and the outer part of the fan blade 19 are fixedly connected with the fan box 20, the top of the side surface of the fan box 20 is provided with the air inlet 21, the bottom of the inner surface of the fan box 20 is fixedly connected with the abutting frame 22, the bottom of the abutting frame 22 is in pressure joint with the top of the guide valve 3, the fixing plate 23 is fixedly connected below the inner surface of the detection box 1, the fixing, the operation panel 6 comprises a warning lamp 61, a display screen 62 and a start button 63, the controller 27 comprises a processor 37 and a data comparison module 38, the processor 37 is respectively connected with the operation panel 6 and the data comparison module 38 in a bidirectional way, the processor 37 is an ARM9 series processor, the output end of the operation panel 6 is respectively electrically connected with the motor 18 and the input end of the humidity sensor 26, the output end of the humidity sensor 26 is electrically connected with the input end of the processor 37, the gas detection box 7 comprises a bottom plate 8, the back surface of the bottom plate 8 is fixedly connected with the front surface of the detection box 1, the outer part of the bottom plate 8 is fixedly connected with a protective shell 9, the front side of the inner surface of the protective shell 9 is fixedly connected with a convex lens 10, the middle of the front surface of the bottom plate 8 is fixedly connected with a glass tube 11 through a fixing strip, the glass tube 11 comprises a U-shaped tube 12 and an, the right side of the arc-shaped section 14 is communicated with the bottom end of the air inlet pipe 13, the connection part of the arc-shaped section 14 and the air inlet pipe 13 and the middle of the bottom of the U-shaped pipe 12 are provided with a recess 15, indicating oil is filled in the U-shaped pipe 12, the front surface of the bottom plate 8 and the middle of the inner side of the U-shaped pipe 12 are adhered with a scale label 16, the top end of the air inlet pipe 13 penetrates through the detection box 1 and extends to the inside of the detection box 1, the inner surface of the detection box 1 and the outer part of the top end of the air inlet pipe 13 are fixedly connected with a protective sleeve 40, the pilot valve 3 is covered by arranging the sealed detection box 1, the gas leaked by the pilot valve 3 can be kept from leaking to the outside, the glass pipe 11 is communicated with the detection box 1, part of the gas can be guided into the glass pipe 11 when the gas leaks from the pilot valve 3, the indicating oil in the glass pipe 11 is pushed by, the glass tube 11 is provided with the recess 15, so that the indication oil is not easy to leak out when the glass tube 11 is turned upside down, and the glass tube can be used for a long time.

And those not described in detail in this specification are well within the skill of those in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a device that leaks hunting is looked for to guide formula relief valve pilot valve, includes detection case (1), main valve (2) and pilot valve (3), and detection case (1) cover is established in the outside of pilot valve (3), its characterized in that: the top threaded connection of detection case (1) has sealed lid (5), fixedly connected with operating panel (6) and gaseous detection box (7) in proper order under to in the front of detection case (1), gaseous detection box (7) include bottom plate (8), the back of bottom plate (8) and the front fixed connection of detection case (1), the outside fixedly connected with protective housing (9) of bottom plate (8), and the front side fixedly connected with convex lens (10) of protective housing (9) internal surface, there is glass pipe (11) through fixed strip fixedly connected with in the middle of bottom plate (8) is positive, glass pipe (11) are including U type pipe (12) and intake pipe (13), the right side of U type pipe (12) is provided with segmental arc (14), and the right side of segmental arc (14) and the bottom intercommunication of U type pipe (13), the junction of segmental arc (14) and intake pipe (13) and the centre of U type pipe (12) bottom all are provided with sunken (15) ) The inside of U type pipe (12) is filled with and indicates oil, the front of bottom plate (8) and the centre that is located U type pipe (12) inboard are pasted and are had scale label (16), the top of intake pipe (13) runs through detection case (1) and extends to the inside of detection case (1), the internal surface of detection case (1) just is located outside fixedly connected with protective sheath (40) on intake pipe (13) top.

2. The pilot valve leak detector of claim 1, further comprising: the fixed cover (17) of center fixedly connected with at sealed lid (5) internal surface top, the inside joint of fixed cover (17) has motor (18), and the bottom fixedly connected with flabellum (19) of motor (18) output shaft, the top of sealed lid (5) and the outside fixedly connected with fan box (20) that are located flabellum (19), and air inlet (21) have been seted up at the top of fan box (20) side.

3. The pilot valve leak detector of claim 2, further comprising: the bottom of the inner surface of the fan box (20) is fixedly connected with an abutting frame (22), the bottom of the abutting frame (22) is in compression joint with the top of the pilot valve (3), a fixing plate (23) is fixedly connected to the lower portion of the inner surface of the detection box (1), and the fixing plate (23) is sleeved outside the pilot valve (3).

4. The pilot valve leak detector of claim 1, further comprising: the right side fixedly connected with of detection case (1) internal surface detects box (24), equal fixedly connected with air guide mouth (25) between the upper and lower both sides of detection box (24) and the right side of detection case (1) internal surface, and the upper and lower both sides that detect box (24) all set up the gas pocket with air guide mouth (25) looks adaptation, left side from the top down fixedly connected with humidity transducer (26) and controller (27) in proper order of detection box (24) internal surface.

5. The pilot valve leak detector of claim 1, further comprising: the right side and the bottom of detection case (1) all fixedly connected with sealed tube (28), and the inside fixedly connected with sealing washer (4) of sealed tube (28), two the inside of sealed tube (28) is sliding connection respectively has first connecting pipe fitting (29) and second connecting pipe fitting (30), and the left end of first connecting pipe fitting (29) and the top of second connecting pipe fitting (30) communicate with the bottom and the right side of pilot valve (3) respectively, the right-hand member of first connecting pipe fitting (29) and the bottom of second connecting pipe fitting (30) all communicate with main valve (2) through hose (31).

6. The pilot valve leak detector of claim 1, further comprising: detection case (1) and the surface of sealed lid (5) and the equal fixedly connected with ladder in position that is connected encircle (32), two the crimping has first seal ring (39), two between ladder shape ring (32) the left and right sides of ladder shape ring (32) surface all overlaps and is equipped with staple bolt (33), and passes through bolt fixed connection between two staple bolts (33), detection case (1) and the surface of sealed lid (5) and be located the inboard of staple bolt (33) and the equal fixedly connected with second seal ring (34) in the upper and lower both sides of ladder shape ring (32).

7. The pilot valve leak detector of claim 1, further comprising: the detection box is characterized in that a first steel frame (35) is fixedly connected between the bottom of the right side of the detection box (1) and the top of the main valve (2) through bolts, a second steel frame (36) is fixedly connected between the bottom of the first steel frame (35) and the bottom of the detection box (1) through bolts, and the right side of the second steel frame (36) is abutted to the left side of the main valve (2).

8. The pilot valve leak detector of claim 4, further comprising: operation panel (6) include warning light (61), display screen (62) and start button (63), controller (27) include treater (37) and data contrast module (38), and treater (37) realize two way connection with operation panel (6) and data contrast module (38) respectively, the output of operation panel (6) respectively with the input electric connection of motor (18) and humidity transducer (26), the output of humidity transducer (26) and the input electric connection of treater (37).