CN220819705U - Anti-fatigue detection device for diaphragm of diaphragm valve - Google Patents
Anti-fatigue detection device for diaphragm of diaphragm valve Download PDFInfo
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- CN220819705U CN220819705U CN202322466941.1U CN202322466941U CN220819705U CN 220819705 U CN220819705 U CN 220819705U CN 202322466941 U CN202322466941 U CN 202322466941U CN 220819705 U CN220819705 U CN 220819705U
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- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 230000002929 anti-fatigue Effects 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 238000001802 infusion Methods 0.000 claims abstract description 20
- 238000003860 storage Methods 0.000 claims abstract description 17
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims description 24
- 238000010992 reflux Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims 5
- 239000011550 stock solution Substances 0.000 claims 2
- 238000004891 communication Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
The application discloses an anti-fatigue detection device for a diaphragm of a diaphragm valve, which comprises a test box, a liquid storage barrel, an infusion pump and a pressure maintaining device, wherein the test box comprises an upper box body and a lower box body which are clamped at two sides of the diaphragm, a solution cavity communicated with the liquid storage barrel is formed between the diaphragm and the lower box body, and a breathing cavity is formed between the diaphragm and the upper box body; the piston of the pressure maintaining device divides the cylinder body into a pressure cavity and a power cavity, the pressure cavity is communicated with the solution cavity through the infusion tube, and a spring is arranged in the power cavity; the inlet and the outlet of the infusion pump are respectively communicated with the liquid storage barrel and the infusion tube; the upper box body is provided with a guide rod and a motor, the lower end of the guide rod extends into the breathing cavity, the output shaft of the motor is provided with a planar groove-shaped cam, and the guide rod is provided with a deflector rod inserted into the cam groove of the planar groove-shaped cam. By utilizing the application, the fatigue resistance detection data of the diaphragm can be conveniently detected, and an enterprise using the diaphragm valve can set the overhaul time according to the adjusting frequency of the station where the diaphragm valve is positioned.
Description
Technical Field
The utility model relates to an anti-fatigue detection device for a diaphragm of a diaphragm valve.
Background
The diaphragm valve is used as a multifunctional valve, because only two parts of the diaphragm and the valve body are in contact with working media, the medium contact area is small, the diaphragm valve is easy to clean and widely applied to various industrial fields, especially fields requiring cleaning and corrosiveness, the diaphragm can gradually generate fatigue and generate cracks in the long-term use process, leakage conditions are caused, in valve production enterprises, static corrosion resistance tests and dynamic corrosion resistance tests of partial solutions are generally carried out on the diaphragm, the requirements of different valve use enterprises cannot be met, the valve use enterprises can only regularly carry out leakage-proof detection on the diaphragm valve, or the diaphragm valve can only be replaced or overhauled until the diaphragm valve leaks, normal production of the enterprises is affected, even if the diaphragm valve is regularly detected, the detection time can not be set according to experience, the set detection time is often short in order to avoid leakage, the frequency of detection is increased, therefore, the diaphragm anti-fatigue detection equipment suitable for the diaphragm valve use enterprises is needed, and the diaphragm valve use enterprises can be conveniently detected according to the specific conditions of the diaphragm valve use enterprises, and the valve overhauling time is set.
Disclosure of utility model
In order to achieve the above object, the utility model provides an anti-fatigue detection device for a diaphragm of a diaphragm valve, which comprises a test box, a liquid storage barrel, an infusion pump and a pressure maintaining device, wherein the test box comprises an upper box body and a lower box body which are detachably connected together, the lower box body is positioned at the lower side of the upper box body, the diaphragm to be detected is clamped between the upper box body and the lower box body in a sealing way, a solution cavity is formed between the diaphragm and the lower box body, a breathing cavity is formed between the diaphragm and the upper box body, a breathing pipe which is communicated with the inside and the outside of the breathing cavity is arranged on the upper box body, the solution cavity is communicated with the liquid storage barrel through a reflux valve, and a pressure gauge for detecting the pressure in the solution cavity is arranged on the lower box body;
The pressure maintaining device comprises a cylinder body, a piston is slidably arranged in the cylinder body, the piston divides the inner cavity of the cylinder body into a pressure cavity and a power cavity, the pressure cavity is communicated with the solution cavity through a transfusion tube, and a spring is arranged in the power cavity;
the inlet of the infusion pump is communicated with the liquid storage barrel, and the outlet of the infusion pump is communicated with the infusion tube through the outlet valve;
The upper box body is provided with a guide rod in a sliding manner along the vertical direction, the lower end of the guide rod extends into the breathing cavity, the upper box body is also fixedly provided with a motor, the output shaft of the motor is fixedly provided with a plane groove-shaped cam, the guide rod is provided with a deflector rod, the deflector rod is inserted into the cam groove of the plane groove-shaped cam, and the guide rod can reciprocate along the vertical direction under the driving of the motor. Specifically, the infusion pump employs a diaphragm pump.
When the anti-fatigue detection device is used for detecting fatigue of the diaphragm, the diaphragm is clamped between the upper box body and the lower box body, the diaphragm is in a natural state, and the plane groove-shaped cam is rotated, so that the deflector rod is positioned at the highest position.
Closing the reflux valve, opening the outlet valve, opening the infusion pump, driving the detection liquid in the liquid storage barrel into the solution cavity and the pressure cavity, pushing the diaphragm to protrude upwards under the pushing of the detection liquid, moving the piston of the pressure maintaining device towards the direction of the rear end plate, compressing the spring, closing the infusion pump and closing the outlet valve when the diaphragm contacts the push plate, and taking the pressure in the solution cavity at the moment as the set pressure.
Then the motor is started, and the guide rod moves reciprocally along the vertical direction under the drive of the motor. When the guide rod moves downwards, the push plate pushes the central part of the diaphragm downwards to protrude downwards, so that detection liquid in the solution cavity enters the pressure cavity, the piston moves towards the rear end plate, and the spring is compressed; when the guide rod moves upwards, the spring rebounds to push the piston to move towards the front end plate, so that the detection liquid in the pressure cavity enters the solution cavity and pushes the central part of the diaphragm to protrude upwards.
When the pressure in the pressure cavity suddenly drops, the diaphragm is ruptured, the motor is closed, and the reflux valve is opened, so that the detection in the solution cavity and the pressure cavity is refluxed into the liquid storage barrel.
According to the opening and closing time of the motor and the rotating speed of the motor, the reciprocating times of the guide rod are calculated, and then the reciprocating times of the guide rod are anti-fatigue detection data of the diaphragm, and an enterprise using the diaphragm valve can set the overhaul time according to the adjusting frequency of the station where the diaphragm valve is located.
Specifically, a sleeve is sleeved on the guide rod, the deflector rod is fixed on the sleeve, and the sleeve is detachably fixed on the guide rod by a set screw. The design can conveniently adjust the height of the push plate so as to adapt to different types of diaphragms.
Further, in order to reduce the influence on the diaphragm, a pressing plate is fixedly arranged at the lower end of the guide rod, and the lower surface of the pressing plate is arc-shaped.
Further, in order to avoid the inclination of the spring and the influence on the pushing of the piston, the spring is a cylindrical helical compression spring, the piston rod freely passes through the end plate deviating from the pressure cavity and then is fixed on the piston, and the spring is sleeved on the piston rod.
Further, in order to improve the convenience of detection, the pressure gauge further comprises a regulating system, wherein the regulating system comprises a central processing unit, a valve adjusting unit and a motor control unit, the valve adjusting unit and the motor control unit are connected with the central processing unit, and the pressure gauge is connected with the central processing unit, wherein:
The central processing unit is used for receiving the detection pressure of the pressure gauge, comparing the detection pressure with the set pressure, and sending a control instruction according to the comparison result to coordinate the operation of the valve adjusting unit and the motor control unit;
The pressure gauge is used for detecting the pressure in the solution cavity and transmitting detection data to the central processing unit;
The valve adjusting unit receives the control of the central processing unit and adjusts the opening and closing of the reflux valve;
And the motor control unit receives the control of the central processing unit and controls the start and stop of the motor.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model.
Detailed Description
Referring to fig. 1, an anti-fatigue detection device for a diaphragm of a diaphragm valve comprises a test box 10, a liquid storage barrel 30, an infusion pump 41 and a pressure maintaining device 50, wherein the test box 10 comprises an upper box body 13 and a lower box body 11, the lower box body 11 is positioned at the lower side of the upper box body 13, an upper flange 14 is arranged at the lower end of the upper box body 13, a lower flange 12 is arranged at the upper end of the lower box body 11, the edge of the diaphragm 100 to be detected is clamped between the upper flange 14 and the lower flange 12, and after a fastening bolt 15 passes through the upper flange 14 and the lower flange 12, the upper box body 13 and the lower box body 11 are detachably connected together.
A solution cavity 101 is formed between the diaphragm 100 and the lower case 11, a breathing cavity 102 is formed between the diaphragm 100 and the upper case 13, and a breathing tube 19 communicating the inside and the outside of the breathing cavity 102 is installed on a top plate 131 of the upper case.
A liquid discharging connecting pipe 16 communicated with the solution cavity 101 is arranged on the bottom plate 111 of the lower box body 11, a liquid inlet connecting pipe 34 is arranged on the top of the liquid storage barrel 30, the liquid discharging connecting pipe 16 is communicated with the liquid inlet connecting pipe 34 through a return pipe 36, the solution cavity 101 is communicated with the liquid storage barrel 30 through the return pipe, and a return valve 62 is arranged on the return pipe. A pressure gauge 63 for detecting the pressure in the solution chamber is mounted on the side wall of the lower case 11. For easy maintenance, a manhole 33 is installed at the top of the liquid storage tub 30. The liquid storage barrel can hold all detection liquid.
A liquid outlet connecting pipe 37 is arranged on the side wall of the liquid storage barrel 30, an inlet of the liquid conveying pump 41 is communicated with the liquid outlet connecting pipe 37 through an inlet pipe 42, and an inlet valve 421 is arranged on the inlet pipe 42. In this embodiment, the infusion pump 41 is a diaphragm pump.
The pressure maintaining device 50 comprises a cylinder body 51 with a circular cross section, end flanges 520 are welded at two ends of the cylinder body 51, a front end cover 521 and a rear end cover 522 are detachably mounted on the two end flanges respectively through bolts, a piston 54 is slidably mounted in the cylinder body 51, the piston divides the inner cavity of the cylinder body into a pressure cavity 59 and a power cavity 53, the pressure cavity 59 is positioned at one side facing the front end plate 521, a first connecting pipe 57 communicated with the pressure cavity 59 is mounted on the front end plate 521, a second connecting pipe 17 communicated with the solution cavity 101 is mounted on the side wall of the lower box body, the first connecting pipe 57 is communicated with the second connecting pipe 17 through a liquid conveying pipe 44, a communicating valve 441 is mounted on the liquid conveying pipe, an outlet of the liquid conveying pump 41 is communicated with the liquid conveying pipe 44 through a liquid conveying pipe 43, an interface point of the liquid conveying pipe on the liquid conveying pipe is positioned at one side of the communicating valve 441 facing the pressure maintaining device 50, and the outlet valve 431 is mounted on the liquid conveying pipe 43.
A terminal hole 58 is formed in the center of the rear end plate 522, and the piston rod 55 is freely threaded through the terminal hole 58 and then screwed into a connecting hole 541 of the piston 54, and the connecting hole 541 is a blind threaded hole. A spring 56 is located in the power chamber and is journaled on the piston rod with its ends bearing against the piston and rear end plate, respectively. The front and rear end plates are collectively referred to as end plates. In this embodiment, the spring is embodied as a cylindrical helical compression spring.
A guide tube 18 is welded to the central portion of the top plate 131 of the upper case 13 in the vertical direction, penetrates through the upper and lower sides of the top plate 131, and the lower end of the guide rod 21 slidably penetrates through the inner cavity of the guide tube 18 and then extends into the breathing cavity. A pressing plate 22 is fixedly arranged at the lower end of the guide rod 21, and the lower surface of the pressing plate is arc-shaped. The platen is used to push the diaphragm downward.
A motor 26 is fixedly mounted on the upper surface of the top plate 131 of the upper case, and a planar groove-type cam 27 is fixedly mounted on the output shaft of the motor, the planar groove-type cam extending in the vertical direction such that the depth direction of the cam groove 271 of the planar groove-type cam 27 extends in the horizontal direction.
The guide rod 21 is sleeved with a sleeve pipe 23, four positioning holes 211 are formed in the outer surface of the guide rod along the vertical direction, the positioning holes are blind holes, a threaded through hole is formed in the sleeve pipe 23, a set screw 25 is screwed into the threaded through hole, the set screw 25 is pressed against the bottom of the positioning holes after penetrating through the threaded through hole, the sleeve pipe is detachably fixed on the guide rod, and the length of the guide rod extending into the breathing cavity can be adjusted according to requirements.
The deflector rod 24 is welded to the sleeve 23, the deflector rod 24 is inserted into the cam groove 271 of the planar slot cam, and the guide rod can reciprocate in the vertical direction under the drive of the motor.
In this embodiment, the anti-fatigue detection device further comprises a control system, the control system comprises a central processing unit 61, a valve adjusting unit 65 and a motor control unit 64 connected with the central processing unit, the pressure gauge 63 is connected with the central processing unit, wherein:
The central processing unit is used for receiving the detection pressure of the pressure gauge, comparing the detection pressure with the set pressure, and sending a control instruction according to the comparison result to coordinate the operation of the valve adjusting unit and the motor control unit;
The pressure gauge is used for detecting the pressure in the solution cavity and transmitting detection data to the central processing unit;
The valve adjusting unit receives the control of the central processing unit and adjusts the opening and closing of the reflux valve;
And the motor control unit receives the control of the central processing unit and controls the start and stop of the motor.
The central processing unit adopts a 32-bit PLC programmable controller, and the reflux valve 62 is a self-controllable regulating butterfly valve which is provided with a valve regulating unit, and only the valve regulating unit is required to be connected to the central processing unit. The pressure gauge 63 is a pressure transmitter, and the conventional fluid pressure transmitter can satisfy the present application, and will not be described again. The motor control unit adopts a relay.
When the anti-fatigue detection is performed on the diaphragm by adopting the embodiment, the diaphragm is clamped between the upper box 13 and the lower box 11, the diaphragm is in a natural state, the plane groove cam 27 is rotated so that the deflector rod 24 is positioned at the lowest position, then the position of the sleeve 23 on the guide rod 21 is adjusted so that the push plate 22 is just pressed against the upper surface of the diaphragm when being positioned at the lowest point, then the plane groove cam 27 is rotated so that the deflector rod 24 is positioned at the highest point, and the push plate 22 is positioned at the highest point.
The return valve 62 is closed, the communication valve 441 and the outlet valve 431 are opened, the infusion pump 41 is opened, the detection liquid in the liquid storage barrel 30 is driven into the solution cavity 101 and the pressure cavity 59, the diaphragm protrudes upward under the pushing of the detection liquid, the piston of the pressure maintaining device moves toward the rear end plate and compresses the spring, and when the diaphragm contacts the push plate, the infusion pump is closed and the outlet valve 431 is closed, and the communication valve 441 is kept in an open state. The pressure in the solution chamber at this time is taken as the set pressure.
Then the motor is started, and the guide rod moves reciprocally along the vertical direction under the drive of the motor. When the guide rod moves downwards, the push plate pushes the central part of the diaphragm downwards to protrude downwards, so that detection liquid in the solution cavity 101 enters the pressure cavity 59 through the communication valve, the piston moves towards the direction of the rear end plate, and the spring is compressed; when the guide rod moves upward, the spring rebounds, pushing the piston to move toward the front end plate, so that the detection liquid in the pressure chamber 59 enters the solution chamber 101 through the communication valve, and pushing the central portion of the diaphragm to protrude upward.
The pressure gauge is used for monitoring the pressure change in the solution cavity, when the pressure in the pressure cavity suddenly drops, the diaphragm is indicated to be broken, the central processing unit sends a command for closing the motor to the motor control unit, the motor stops running, and sends a command for opening the reflux valve to the valve adjusting unit, and the reflux valve is opened, so that the detection in the solution cavity and the pressure cavity is refluxed into the liquid storage barrel 30.
According to the opening and closing time of the motor and the rotating speed of the motor, the reciprocating times of the guide rod 21 are calculated, and then the reciprocating times of the guide rod 21 are fatigue resistance detection data of the diaphragm, and an enterprise using the diaphragm valve can set the overhauling time according to the adjusting frequency of the station where the diaphragm valve is located.
Claims (6)
1. The utility model provides an anti-fatigue detection device of diaphragm valve, which is characterized in that, including test box, stock solution bucket, infusion pump and pressurize ware, this test box includes the upper tank body and the lower box body that detachably links together, wherein the lower box body is located the downside of upper tank body, the diaphragm that awaits measuring is held tightly between upper tank body and lower box body, form a solution chamber between diaphragm and the lower box body, form a breathing chamber between diaphragm and the upper tank body, install a breathing tube that communicates the inside and outside of breathing chamber on the upper tank body, the solution chamber is through this stock solution bucket of back flow valve intercommunication, install the manometer that is used for detecting the solution chamber pressure on the lower box body;
The pressure maintaining device comprises a cylinder body, a piston is slidably arranged in the cylinder body, the piston divides the inner cavity of the cylinder body into a pressure cavity and a power cavity, the pressure cavity is communicated with the solution cavity through a transfusion tube, and a spring is arranged in the power cavity;
the inlet of the infusion pump is communicated with the liquid storage barrel, and the outlet of the infusion pump is communicated with the infusion tube through the outlet valve;
The upper box body is provided with a guide rod in a sliding manner along the vertical direction, the lower end of the guide rod extends into the breathing cavity, the upper box body is also fixedly provided with a motor, the output shaft of the motor is fixedly provided with a plane groove-shaped cam, the guide rod is provided with a deflector rod, the deflector rod is inserted into the cam groove of the plane groove-shaped cam, and the guide rod can reciprocate along the vertical direction under the driving of the motor.
2. The device for detecting fatigue resistance of a diaphragm valve according to claim 1, wherein a sleeve is sleeved on the guide rod, the deflector rod is fixed on the sleeve, and the sleeve is detachably fixed on the guide rod by a set screw.
3. The fatigue resistance testing device for diaphragm of diaphragm valve according to claim 1, wherein a pressing plate is fixedly installed at the lower end of the guide rod, and the lower surface of the pressing plate is arc-shaped.
4. The device of claim 1, wherein the spring is a cylindrical helical compression spring, the piston rod is fixed to the piston after freely passing through the end plate facing away from the pressure chamber, and the spring is sleeved on the piston rod.
5. The fatigue resistance detection device for a diaphragm of a diaphragm valve according to claim 1, wherein the infusion pump is a diaphragm pump.
6. The apparatus for fatigue resistance testing of a diaphragm valve according to claim 1, further comprising a regulating system including a central processing unit, and a valve regulating unit and a motor control unit connected to the central processing unit, the pressure gauge being connected to the central processing unit, wherein:
The central processing unit is used for receiving the detection pressure of the pressure gauge, comparing the detection pressure with the set pressure, and sending a control instruction according to the comparison result to coordinate the operation of the valve adjusting unit and the motor control unit;
The pressure gauge is used for detecting the pressure in the solution cavity and transmitting detection data to the central processing unit;
The valve adjusting unit receives the control of the central processing unit and adjusts the opening and closing of the reflux valve;
And the motor control unit receives the control of the central processing unit and controls the start and stop of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322466941.1U CN220819705U (en) | 2023-09-11 | 2023-09-11 | Anti-fatigue detection device for diaphragm of diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322466941.1U CN220819705U (en) | 2023-09-11 | 2023-09-11 | Anti-fatigue detection device for diaphragm of diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220819705U true CN220819705U (en) | 2024-04-19 |
Family
ID=90679110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322466941.1U Active CN220819705U (en) | 2023-09-11 | 2023-09-11 | Anti-fatigue detection device for diaphragm of diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220819705U (en) |
-
2023
- 2023-09-11 CN CN202322466941.1U patent/CN220819705U/en active Active
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