CN117405326A - Tightness testing device of drain valve - Google Patents
Tightness testing device of drain valve Download PDFInfo
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- CN117405326A CN117405326A CN202311658335.8A CN202311658335A CN117405326A CN 117405326 A CN117405326 A CN 117405326A CN 202311658335 A CN202311658335 A CN 202311658335A CN 117405326 A CN117405326 A CN 117405326A
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- drain valve
- seal
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 175
- 238000007789 sealing Methods 0.000 claims abstract description 165
- 230000000670 limiting effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 description 12
- 230000000007 visual effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 230000005587 bubbling Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The application relates to the field of drain valve testing arrangement, especially a leakproofness testing arrangement of drain valve, including overhead tank and seal box, be connected with the admission line on the overhead tank, the one end that the overhead tank was kept away from to the admission line supplies the drain valve to advance water pipe end connection, the seal box has the water storage chamber, seal box surface has seted up the seal groove, seal groove inner wall can support tightly drain valve play water pipe end circumference outer wall and form sealedly, seal box surface connection has a measuring cylinder, measuring cavity has been seted up on the measuring cylinder surface, measuring cavity intercommunication water storage chamber, measuring cavity inner wall sliding connection has the float. The setting of overhead tank, seal box and measuring cylinder among this application, the staff obtains trap play water pipe end exhaust gas volume according to the float at the slip distance of measuring chamber inner wall how much, makes the staff need not to observe trap play water pipe end exhaust bubble quantity always to reduce staff's working pressure, improve the sealing performance detection precision of staff to the trap.
Description
Technical Field
The application relates to the field of drain valve testing devices, in particular to a sealing performance testing device of a drain valve.
Background
Steam traps, also known as steam traps, are classified into steam systems and gas systems, and are installed at the end of a pipeline heated by steam, and mainly serve to continuously discharge condensed water in a pipeline heated by steam to the outside of the pipeline.
The sealing performance test is required before the trap leaves the factory, and the traditional trap sealing performance detection device is mainly characterized in that the trap outlet pipe end is immersed in water, and workers observe whether the bubbling number of the trap outlet pipe end in water is within a specified range, so that whether the sealing performance of the trap is qualified is judged.
When the water outlet pipe end of the drain valve continuously emits a plurality of bubbles and rises to dissipate, the staff cannot accurately count the bubbling quantity of the drain valve, and the sizes of the bubbles emitted by the water outlet pipe end of the drain valve are different, so that the staff cannot accurately control the quantity of the gas discharged by the water outlet pipe end of the drain valve, and the sealing performance detection precision of the drain valve by the staff is reduced.
Disclosure of Invention
In order to improve the problem of staff's sealing performance detection precision to the trap, this application provides a leakproofness testing arrangement of trap.
The application provides a leakproofness testing arrangement of trap adopts following technical scheme:
the utility model provides a leakproofness testing arrangement of trap, includes pressure tank and seal box, the pressure tank can store compressed air, be connected with the admission line on the pressure tank, the one end that the pressure tank was kept away from to the admission line supplies the trap to advance water pipe end connection, compressed air in the pressure tank gets into the trap through the admission line and advances water pipe end, the seal box has the water storage chamber of storing water, the seal groove has been seted up on the seal box surface, the seal groove runs through the seal box surface and communicates the water storage chamber, and the trap goes out the water pipe end and passes the seal groove and is located the water storage chamber, the seal groove inner wall can support tightly trap play water pipe end circumference outer wall and form sealedly, the seal box surface connection has a measuring cylinder, the measuring chamber has been seted up to the surface of seal box is kept away from to the measuring cylinder, measuring chamber intercommunication water storage chamber, measuring chamber inner wall sliding connection has the float, the float outer wall supports tightly and measures the chamber inner wall circumference and forms sealedly, when compressed air in the trap gets into from the play water pipe end in the water storage chamber, the pressure in the water storage chamber increases and drives the air pressure in the water storage chamber and keeps away from the direction of sliding of the trap along the float along measuring chamber inner wall.
Through adopting above-mentioned technical scheme, when the trap leakproofness is tested, the trap intake pipe end is connected with the admission line, the trap play water pipe end wears to establish the seal groove and is located the water storage chamber, trap play water pipe end circumference outer wall supports closely sealed inslot wall and forms sealedly, store full water in the water storage chamber, compressed air in the pressure pot gets into in the trap intake pipe end through the admission line, when compressed air in the trap is discharged from the play water pipe end, compressed air gathers in the water storage chamber, the atmospheric pressure in the water storage chamber increases, float circumference outer wall supports tightly measures the intracavity wall and forms sealedly, drive the float and slide along measuring the intracavity wall towards the direction of keeping away from the seal box, the staff is according to the slip distance of float at measuring the intracavity wall obtains the gas volume of trap play water pipe end exhaust, make the staff need not to observe the bubble quantity of trap play water pipe end exhaust always, thereby reduce staff's operating pressure, improve staff's sealing performance detection precision to the trap.
Optionally, the seal box includes seal section one and seal section two, water storage chamber and seal groove all are located between seal section one and the seal section two, seal section one is connected with the sealing strip towards seal section two's surface, seal section two has seted up the seal chamber that supplies the sealing strip embedding towards seal section one's surface, works as seal section one covers seal section two and forms the seal box, the sealing strip outer wall supports tightly seal chamber inner wall and forms sealedly.
Through adopting above-mentioned technical scheme, when the trap goes out the water pipe end and places on seal section one, seal section two covers and closes seal section one and form the seal box, seal groove inner wall supports tightly the trap and goes out water pipe end circumference outer wall and form sealedly, and the sealing strip outer wall supports tightly sealed intracavity wall simultaneously and forms sealedly, makes the water in the water storage chamber be difficult for spilling over from seal section one and seal section two's junction to improve seal stability between seal section one and the seal section two.
Optionally, be connected with seal assembly on the seal box, seal assembly includes closing plate and power board, the power chamber that the power board slided has been seted up to seal intracavity wall, the terminal surface that power board and seal section two surfaces flush can the butt sealing strip, the driving chamber that supplies the closing plate to slide has been seted up to seal section two surfaces towards seal section one, driving chamber intercommunication power chamber, seal section one surface towards seal section two has seted up the tight chamber that supports that supplies the embedding of closing plate tip, works as seal section one lid closes seal section two, sealing strip butt power board and drive the power board to slide towards the direction that is close to the power chamber, drive the sealing plate tip slides towards the direction that is close to the tight chamber that supports, seal plate tip embedding supports tight intracavity, seal plate circumference outer wall supports tightly to tightly the intracavity wall and forms sealedly.
Through adopting above-mentioned technical scheme, when sealed section one lid closes sealed section two, sealing strip surface butt power board surface and order about the power board towards the direction that is close to the power chamber to slide, power chamber intercommunication drive chamber, the atmospheric pressure in the power chamber increases, the air in the power chamber gets into the drive intracavity, drive chamber and support tight chamber intercommunication, the atmospheric pressure in the drive chamber increases and order about the closing plate to slide towards the direction that is close to supporting tight chamber, the closing plate tip embedding supports tight intracavity, closing plate circumference outer wall supports tightly to support tight intracavity wall and forms sealedly, improve the sealing stability between sealed section one and the sealed section two.
Optionally, the seal assembly still includes the elastic component, the one end of elastic component elasticity direction is connected on the power chamber inner wall, the other end of elastic component elasticity direction is connected on the power board, the slip direction of elastic component elasticity direction and power board is parallel to each other, the elastic component has elasticity and drives the power board and slide towards the direction of keeping away from the power chamber, just the trend that power board face and sealed section two surfaces flush.
Through adopting above-mentioned technical scheme, when sealed section one breaks away from sealed section two, the sealing strip disappears to the pressure of power board, and the power board is driven to slide towards the direction of keeping away from the power chamber to elastic component elasticity, and the power board face flushes with sealed section two surfaces, realizes the automatic re-setting of power board, need not the manual adjustment to the power board of staff to improve the convenience that the staff used the leakproofness testing arrangement of trap.
Optionally, seal arc strip is connected with to seal groove inner wall, seal arc strip inner circle can support tightly drain valve play water pipe end circumference outer wall and form sealedly.
Through adopting above-mentioned technical scheme, when the trap goes out the water pipe end and wears to establish the seal groove and be located the water storage chamber, sealed arc strip inner circle supports tightly the trap and goes out water pipe end circumference outer wall and form sealedly, makes the water in the water storage chamber be difficult for spilling over from the junction of seal groove inner wall and trap play water pipe end to improve the sealing stability between seal groove inner wall and the trap play water pipe end.
Optionally, the measuring cylinder is connected to the first sealing section, the first sealing section is connected with a water inlet assembly, the water inlet assembly comprises a water inlet pipeline, a water inlet valve body, a one-way valve and a sealing block, one end of the water inlet pipeline is connected to the first sealing section, an inner cavity of the water inlet pipeline is communicated with a water storage cavity, the other end of the water inlet pipeline is connected to the water inlet valve body, the water inlet pipeline sequentially passes through the water inlet valve body and the water inlet pipeline and enters the water storage cavity, the water inlet valve body can control on-off of the water inlet pipeline, the one-way valve is connected to the first sealing section, air in the water storage cavity is discharged to the outside through the one-way valve, a sliding groove for sliding the sealing block is formed in the surface of the measuring cylinder facing the one-way valve, the sliding groove is communicated with the measuring cavity, when the sealing block slides in a direction close to the measuring cavity, one end of the float is abutted to the surface of the sealing block, and the other end of the float is flush with the inner wall of the water storage cavity; when the sealing block slides towards the direction close to the one-way valve, the surface of the sealing block abuts against the outlet of the one-way valve to form sealing, and the limiting effect of the sealing block on the floater is eliminated.
Through adopting above-mentioned technical scheme, when seal segment one lid closes seal segment two forms the seal box, the seal block slides along the direction that the groove inner wall that slides towards being close to the measurement chamber, float one end butt seal block surface, the float other end flushes with the water storage chamber inner wall, open the valve body of intaking, water loops through the valve body of intaking, the inlet channel is in the water storage chamber, and order about the air in the water storage chamber to discharge through the check valve, realize the retaining to the water storage in the water storage chamber, prove when the check valve is discharged water and hold full water in the water storage chamber, the staff orders about the seal block to slide along the direction that the groove inner wall that slides towards being close to the check valve, seal block surface butt check valve export and seal the check valve, seal block is vanished to the closure effect of float simultaneously, open the overhead tank, compressed air in the overhead tank gets into the drain valve inlet pipe end through the inlet pipe, when the compressed air in the drain valve is discharged from the outlet pipe end, the atmospheric pressure increase in the water storage chamber and order about the float to slide towards the direction of keeping away from the seal box, realize the real-time monitoring of staff to drain tightness test.
Optionally, the surface of the floater is connected with a sliding block, and a sliding groove for sliding the sliding block is formed in the inner wall of the measuring cavity.
Through adopting above-mentioned technical scheme, when the float slides at measuring intracavity wall, drive the float and slide at the spout inner wall, make the float be difficult for taking place the skew at measuring intracavity wall to improve the stability that the float slided in measuring the intracavity.
Optionally, a surface of the sealing section is connected with a locating plate, the locating plate is located one side of the check valve away from the measuring cylinder, the surface of the locating plate facing the measuring cylinder can be abutted to the surface of the sealing block, when the sealing block slides towards the direction close to the locating plate, one end of the sealing block is abutted to the surface of the locating plate, the other end of the sealing block is flush with the inner wall of the measuring cavity, and the sealing block seals the outlet of the check valve.
Through adopting above-mentioned technical scheme, when the water storage intracavity holds full water, the staff drives the sealing piece along sliding the inslot wall towards being close to the direction of check valve and slides, sealing piece one end butt locating plate face, and the sealing piece other end flushes with measuring the intracavity wall, and sealing piece surface butt check valve export forms and seals, and the locating plate provides the location to the sliding of sealing piece, and the staff need not to adjust the sealing piece repeatedly in the position of sliding the inslot to improve the convenience that the staff used the leakproofness testing arrangement of trap.
Optionally, a visual mirror is connected to the measuring cylinder, and the visual mirror can directly observe the position of the floater in the measuring cavity.
Through adopting above-mentioned technical scheme, the staff can directly observe the position of float in measuring the intracavity through the visual mirror, need not the staff and uses the dipperstick to measure the depth of float in measuring the intracavity to improve the convenience that the staff used the leakproofness testing arrangement of trap.
Optionally, the surface of the measuring cylinder, which is close to the visible mirror, is carved with scales, and the scales can measure the position height of the floater in the measuring cavity.
Through adopting above-mentioned technical scheme, the staff directly observes the position of float in measuring the intracavity through the visual mirror to directly read out the rising height of float through the scale, make the staff can accurately learn the exhaust gas volume of trap outlet pipe end, thereby improve the measurement accuracy of staff to the trap leakproofness.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the pressure tank, the seal box and the measuring cylinder are arranged, so that a worker can obtain the volume of gas discharged by the water outlet pipe end of the drain valve according to the sliding distance of the floater on the inner wall of the measuring cavity, and the worker does not need to observe the quantity of bubbles discharged by the water outlet pipe end of the drain valve all the time, thereby reducing the working pressure of the worker and improving the detection precision of the sealing performance of the drain valve by the worker;
2. the sealing strip and the sealing cavity are arranged, so that water in the water storage cavity is not easy to overflow from the joint of the first sealing section and the second sealing section, and the sealing stability between the first sealing section and the second sealing section is improved;
3. the setting of elastic plate realizes the automatic re-setting of power board, need not the staff and manually adjusts the power board to improve the convenience that the staff used drain valve's leakproofness testing arrangement.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present application.
Fig. 2 is a partial cross-sectional view of an embodiment of the present application, primarily showing the water intake assembly.
FIG. 3 is a schematic view of the overall structure of a trap and seal box in an embodiment of the present application.
Fig. 4 is a partial cross-sectional view of an embodiment of the present application, primarily showing a chute.
Reference numerals illustrate: 1. a pressure tank; 2. a seal box; 21. a water storage chamber; 22. sealing grooves; 23. sealing section I; 231. a tight cavity; 24. a second sealing section; 241. sealing the cavity; 242. a power cavity; 243. a drive chamber; 3. an air intake duct; 4. opening and closing the valve body; 5. a drain valve; 6. sealing the arc strip; 7. a sealing strip; 8. a seal assembly; 81. a sealing plate; 82. a power plate; 83. an elastic member; 9. a measuring cylinder; 91. a measurement cavity; 92. a chute; 93. a scale; 94. a slip groove; 10. a float; 11. a slide block; 12. a visual mirror; 13. a water inlet assembly; 131. a water inlet pipe; 132. a water inlet valve body; 133. a one-way valve; 134. a closing block; 14. and (5) positioning the plate.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-4.
The embodiment of the application discloses a tightness testing device of a drain valve. Referring to fig. 1, a tightness testing device of a drain valve comprises a pressure tank 1 and a sealing box 2, wherein the pressure tank 1 can store compressed air, an air inlet pipeline 3 is fixed at the air outlet end of the pressure tank 1 through a flange, and a water inlet pipe end flange of a drain valve 5 is fixed at one end, far away from the pressure tank 1, of the air inlet pipeline 3; compressed air in the pressure tank 1 enters the water inlet pipe end of the drain valve 5 through the air inlet pipeline 3, the water inlet pipeline 131 is provided with the opening and closing valve body 4, and the opening and closing valve body 4 can control the on-off of the water inlet pipeline 131.
Referring to fig. 2, seal box 2 is square box in this application embodiment, seal box 2 has the water storage chamber 21 of storage water, seal groove 22 has been seted up on seal box 2 surface, seal groove 22 is the cylindricality groove in this application embodiment, seal groove 22 axis and seal box 2 length direction are parallel to each other, seal groove 22 runs through seal box 2 outer wall and intercommunication water storage chamber 21 along self axis, trap 5 play water pipe end can wear to establish seal groove 22 and be located water storage chamber 21, and trap 5 play water pipe end circumference outer wall can support closely seal groove 22 inner wall and form sealedly. Sealing groove 22 inner wall coaxial inlay sealed arc strip 6, and the material of sealed arc strip 6 can be rubber or silica gel, and the material of sealed arc strip 6 in this application embodiment is rubber, has certain deformability, and sealed arc strip 6 intrados can support tightly drain valve 5 play water pipe end circumference outer wall and form sealedly.
Referring to fig. 2, seal box 2 includes seal section one 23 and seal section two 24, seal section one 23 and seal section two 24 are square board in this embodiment, seal section one 23 covers seal section two 24 and forms seal box 2, water storage chamber 21 and seal groove 22 all are located between seal section one 23 and seal section two 24, seal section one 23 is towards seal section two 24's fixed surface has sealing strip 7, seal section two 24 has offered the seal chamber 241 that supplies sealing strip 7 to imbed towards seal section one 23's surface, when seal section one 23 covers seal section two 24 and forms seal box 2, sealing strip 7 surface supports tightly seal chamber 241 inner wall formation seal, make the water in the water storage chamber 21 be difficult for spilling over from the junction of seal section one 23 and seal section two 24, thereby improve seal stability between seal section one 23 and the seal section two 24.
Referring to fig. 2, the seal box 2 is connected with a seal assembly 8, and the seal assembly 8 can increase the sealing stability between the first seal segment 23 and the second seal segment 24. The seal assembly 8 includes closing plate 81, power board 82 and elastic component 83, the power chamber 242 that power board 82 slided has been seted up to the inner wall of sealing strip 7 to sealed chamber 241, power board 82 is equivalent to the piston in this embodiment, power board 82's slip direction and the first 23 direction of height of seal section are parallel to each other, elastic component 83 can be pressure spring or extension spring, elastic component 83 is the pressure spring in this embodiment, certain deformability has, the one end of elastic component 83 elasticity direction is fixed on power chamber 242 inner wall, the other end of elastic component 83 elasticity direction is fixed on power board 82, the elastic component 83 elasticity direction is parallel to each other with power board 82's slip direction, elastic component 83 has elasticity to order about power board 82 to slide towards the direction of keeping away from power chamber 242, and power board 82 face and the trend that two 24 surfaces of seal section flush.
Referring to fig. 2, a driving cavity 243 for sliding the sealing plate 81 is provided on the surface of the sealing section two 24 facing the sealing section one 23, in this embodiment, the sealing plate 81 is equivalent to a piston, the sliding direction of the sealing plate 81 and the sliding direction of the power plate 82 are parallel to each other, the surface of the sealing plate 81 is flush with the surface of the sealing section two 24, the power cavity 242 is communicated with the driving cavity 243, and a tightening cavity 231 for embedding the end of the sealing plate 81 is provided on the surface of the sealing section one 23 facing the sealing section two 24. When the first sealing section 23 covers the second sealing section 24 to form the sealing box 2, the surface of the sealing strip 7 abuts against the surface of the power plate 82 and drives the power plate 82 to slide towards the direction close to the power cavity 242, air is driven to enter the driving cavity 243 after the air pressure of the power cavity 242 is increased, the air pressure in the driving cavity 243 is increased, the driving cavity 243 is communicated with the abutting cavity 231, the sealing plate 81 is driven to slide towards the direction close to the abutting cavity 231, the end part of the sealing plate 81 is embedded into the abutting cavity 231, the outer wall of the sealing plate 81 abuts against the inner wall of the abutting cavity 231 to form sealing, and the surface of the sealing strip 7 abuts against the inner wall of the sealing cavity 241 to form sealing.
Referring to fig. 3 and 4, a measuring cylinder 9 is welded and fixed on the surface of the first sealing section 23 far away from the second sealing section 24, a measuring cavity 91 is formed on the surface of the measuring cylinder 9 far away from the first sealing section 23, and the depth direction of the measuring cavity 91 penetrates through the outer wall of the measuring cylinder 9 and is communicated with the water storage cavity 21. The inner wall of the measuring cavity 91 is slidably connected with a floater 10, the circumferential outer wall of the floater 10 abuts against the inner wall of the measuring cavity 91 to form a seal, the surface of the floater 10 facing the water storage cavity 21 is flush with the inner wall of the water storage cavity 21, and the sliding direction of the floater 10 and the depth direction of the measuring cavity 91 are parallel to each other. The float 10 fixed surface has slider 11, and the spout 92 that supplies slider 11 to slide has been seted up to measurement chamber 91 inner wall, and spout 92 is the bar groove in this application embodiment, and spout 92 length direction and measurement chamber 91 depth direction are parallel to each other, and the measuring cylinder 9 surface has inlayed visual mirror 12, and visual mirror 12 can direct observation float 10 in the degree of depth position of measurement chamber 91, and the measuring cylinder 9 is close to the surface of visual mirror 12 and has carved with scale 93, and scale 93 can direct measurement float 10 in the position height of measurement chamber 91.
Referring to fig. 1 and 2, when compressed air in the pressure tank 1 enters the water inlet pipe end of the drain valve 5 through the air inlet pipe 3, when compressed air in the drain valve 5 leaks into the water storage cavity 21 through the water outlet pipe end, the air pressure in the water storage cavity 21 increases and drives the floater 10 to slide in the direction away from the seal box 2 on the inner wall of the measurement cavity 91, and the working personnel directly obtains the volume of air discharged by the water outlet pipe end of the drain valve 5 through the position height of the floater 10 in the measurement cavity 91, so that the working personnel do not need to observe the number of bubbles discharged by the water outlet pipe end of the drain valve 5 all the time, thereby reducing the working pressure of the working personnel and improving the detection precision of the sealing performance of the drain valve 5 by the working personnel.
Referring to fig. 2, a water inlet assembly 13 is connected to the first sealing section 23, and the water inlet assembly 13 can drive water to fill the water storage cavity 21. The water inlet assembly 13 comprises a water inlet pipeline 131, a water inlet valve body 132, a one-way valve 133 and a sealing block 134, one end of the water inlet pipeline 131 is arranged on the surface of the first sealing section 23, the inner cavity of the water inlet pipeline 131 is communicated with the water storage cavity 21, the other end of the water inlet pipeline 131 is arranged at the water outlet end of the water inlet valve body 132, the water inlet valve body 132 can control the on-off state of the water inlet pipeline 131, and water sequentially passes through the water inlet valve body 132 and the water inlet pipeline 131 and enters the water storage cavity 21 to supply water to the water storage cavity 21. The check valve 133 is installed on the surface of the first sealing section 23, air in the water storage cavity 21 is discharged to the outside through the check valve 133, a sliding groove 94 for sliding the sealing block 134 is formed in the surface of the measuring cylinder 9 facing the check valve 133, the sliding groove 94 is communicated with the measuring cavity 91, the positioning plate 14 is fixedly welded on the surface of the first sealing section 23, the positioning plate 14 is located on one side, far away from the measuring cylinder 9, of the check valve 133, and the surface, facing the measuring cylinder 9, of the positioning plate 14 can be abutted against the surface of the sealing block 134.
Referring to fig. 2, when the sealing block 134 slides in a direction approaching to the measuring cavity 91, one end of the float 10 abuts against the surface of the sealing block 134, the other end of the float 10 is flush with the inner wall of the water storage cavity 21, the sealing block 134 limits the position of the float 10 in the inner wall of the measuring cavity 91, water sequentially passes through the water inlet valve body 132 and the water inlet pipe 131 and enters the water storage cavity 21, air pressure in the water storage cavity 21 is increased and then is discharged to the outside from the one-way valve 133, when the one-way valve 133 discharges water, a worker can directly know whether the water storage cavity 21 is full of water or not, the sealing block 134 is driven to slide in a direction approaching to the positioning plate 14, one end of the sealing block 134 abuts against the surface of the positioning plate 14, the other end of the sealing block 134 is flush with the inner wall of the measuring cavity 91, the sealing effect of the sealing block 134 on the float 10 disappears, and the sealing block 134 seals the outlet of the one-way valve 133.
The implementation principle of the tightness testing device of the drain valve is as follows: compressed air in the pressure tank 1 enters the water inlet pipe end of the drain valve 5 through the air inlet pipeline 3, when the compressed air in the drain valve 5 leaks into the water storage cavity 21 through the water outlet pipe end, the air pressure in the water storage cavity 21 increases and drives the floater 10 to slide in the direction away from the seal box 2 on the inner wall of the measurement cavity 91, and the working personnel directly obtains the gas volume discharged by the water outlet pipe end of the drain valve 5 through the position height of the floater 10 in the measurement cavity 91, so that the working personnel do not need to observe the quantity of bubbles discharged by the water outlet pipe end of the drain valve 5 all the time, thereby reducing the working pressure of the working personnel and improving the detection precision of the sealing performance of the drain valve 5 by the working personnel.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. A leak tightness testing device of a drain valve is characterized in that: the device comprises a pressure tank (1) and a seal box (2), wherein the pressure tank (1) can store compressed air, an air inlet pipeline (3) is connected to the pressure tank (1), one end of the air inlet pipeline (3) far away from the pressure tank (1) is connected with a water inlet pipe end of a drain valve (5), the compressed air in the pressure tank (1) enters the water inlet pipe end of the drain valve (5) through the air inlet pipeline (3), the seal box (2) is provided with a water storage cavity (21) for storing water, the surface of the seal box (2) is provided with a seal groove (22), the seal groove (22) penetrates through the surface of the seal box (2) and is communicated with the water storage cavity (21), the water outlet pipe end of the drain valve (5) penetrates through the seal groove (22) and is positioned in the water storage cavity (21), the inner wall of the seal groove (22) can be abutted against the circumferential outer wall of the water outlet pipe end of the drain valve (5) to form a seal, the surface of the seal box (2) is connected with a measuring cylinder (9), the surface of the seal cylinder (9) far away from the seal box (2) is provided with a measuring cavity (91), the surface of the seal box (2) is provided with a measuring cavity (91), the inner wall (91) is communicated with the float (10) in a sliding mode, the inner wall (10) is tightly connected with the inner wall (91), when compressed air in the drain valve (5) enters the water storage cavity (21) from the water outlet pipe end, the air pressure in the water storage cavity (21) is increased, and the floater (10) is driven to slide along the inner wall of the measuring cavity (91) in a direction away from the sealing box (2).
2. The leak tightness testing apparatus of a drain valve according to claim 1, wherein: the sealing box (2) comprises a first sealing section (23) and a second sealing section (24), the water storage cavity (21) and the sealing groove (22) are both located between the first sealing section (23) and the second sealing section (24), the surface of the first sealing section (23) facing the second sealing section (24) is connected with a sealing strip (7), the surface of the second sealing section (24) facing the first sealing section (23) is provided with a sealing cavity (241) for the sealing strip (7) to be embedded, and when the first sealing section (23) covers the second sealing section (24) to form the sealing box (2), the outer wall of the sealing strip (7) abuts against the inner wall of the sealing cavity (241) to form sealing.
3. The leak tightness testing apparatus of a drain valve according to claim 2, wherein: the sealing box (2) is connected with a sealing assembly (8), the sealing assembly (8) comprises a sealing plate (81) and a power plate (82), a power cavity (242) for sliding the power plate (82) is formed in the inner wall of the sealing cavity (241), the end face of the power plate (82) flush with the surface of the sealing section II (24) can be abutted against a sealing strip (7), a driving cavity (243) for sliding the sealing plate (81) is formed in the surface of the sealing section II (24) towards the surface of the sealing section II (24), the driving cavity (243) is communicated with the power cavity (242), a tight cavity (231) for embedding the end part of the sealing plate (81) is formed in the surface of the sealing section I (23) towards the sealing section II (24), and when the sealing section II (24) is covered by the sealing section I (23), the sealing strip (7) is abutted against the power plate (82) and drives the power plate (82) to slide towards the direction close to the power cavity (242), and the end part of the sealing plate (81) is driven to slide towards the direction close to the tight cavity (231), and the end part of the sealing plate (81) is tightly embedded in the sealing plate (81) towards the circumferential direction.
4. A leak tightness testing apparatus for a drain valve according to claim 3, wherein: the sealing assembly (8) further comprises an elastic piece (83), one end of the elastic piece (83) in the elastic direction is connected to the inner wall of the power cavity (242), the other end of the elastic piece (83) in the elastic direction is connected to the power plate (82), the elastic direction of the elastic piece (83) and the sliding direction of the power plate (82) are parallel to each other, the elastic piece (83) has a trend that the elastic force drives the power plate (82) to slide in the direction away from the power cavity (242), and the surface of the power plate (82) is flush with the surface of the sealing section II (24).
5. The leak tightness testing apparatus of a drain valve according to claim 1, wherein: the inner wall of the sealing groove (22) is connected with a sealing arc strip (6), and the inner ring of the sealing arc strip (6) can be abutted against the circumferential outer wall of the water outlet pipe end of the drain valve (5) to form sealing.
6. The leak tightness testing apparatus of a drain valve according to claim 2, wherein: the measuring cylinder (9) is connected to the first sealing section (23), the first sealing section (23) is connected with a water inlet component (13), the water inlet component (13) comprises a water inlet pipeline (131), a water inlet valve body (132), a one-way valve (133) and a sealing block (134), one end of the water inlet pipeline (131) is connected to the surface of the first sealing section (23), an inner cavity of the water inlet pipeline (131) is communicated with a water storage cavity (21), the other end of the water inlet pipeline (131) is connected to the water inlet valve body (132), water sequentially passes through the water inlet valve body (132) and the water inlet pipeline (131) and enters the water storage cavity (21), the water inlet valve body (132) can control the on-off of the water inlet pipeline (131), the one-way valve (133) is connected to the surface of the first sealing section (23), air in the water storage cavity (21) is discharged to the outside through the one-way valve (133), a sliding groove (94) for sliding the sealing block (134) to slide is formed on the surface of the one-way valve (133), the sliding groove (94) is communicated with the sealing block (91) when the sliding block (91) is close to the sealing block (91), the other end of the floater (10) is flush with the inner wall of the water storage cavity (21); when the sealing block (134) slides towards the direction close to the one-way valve (133), the surface of the sealing block (134) is abutted against the outlet of the one-way valve (133) to form sealing, and the limiting effect of the sealing block (134) on the floater (10) is eliminated.
7. The leak tightness testing apparatus of a drain valve according to claim 1, wherein: the surface of the floater (10) is connected with a sliding block (11), and a sliding groove (92) for sliding the sliding block (11) is formed in the inner wall of the measuring cavity (91).
8. The leak tightness testing apparatus of a drain valve according to claim 6, wherein: the sealing section one (23) surface is connected with a locating plate (14), the locating plate (14) is located one side that the measuring cylinder (9) was kept away from to check valve (133), the surface of locating plate (14) orientation measuring cylinder (9) can butt closure piece (134) surface, works as closure piece (134) are towards the direction that is close to locating plate (14) when sliding, closure piece (134) one end butt locating plate (14) face, closure piece (134) other end flushes with measuring chamber (91) inner wall, just closure piece (134) seal check valve (133) export.
9. The leak tightness testing apparatus of a drain valve according to claim 6, wherein: the measuring cylinder (9) is connected with a visible mirror (12), and the visible mirror (12) can directly observe the position of the floater (10) in the measuring cavity (91).
10. The leak tightness testing apparatus of a drain valve according to claim 9, wherein: the surface of the measuring cylinder (9) close to the visible mirror (12) is carved with a scale (93), and the scale (93) can measure the position height of the floater (10) in the measuring cavity (91).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311658335.8A CN117405326A (en) | 2023-12-05 | 2023-12-05 | Tightness testing device of drain valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311658335.8A CN117405326A (en) | 2023-12-05 | 2023-12-05 | Tightness testing device of drain valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118090071A (en) * | 2024-04-26 | 2024-05-28 | 四川鑫跃鑫科学仪器有限公司 | Pressure pipeline leakage test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118090071A (en) * | 2024-04-26 | 2024-05-28 | 四川鑫跃鑫科学仪器有限公司 | Pressure pipeline leakage test device |
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