CN218239313U - Self-closing valve testing device - Google Patents
Self-closing valve testing device Download PDFInfo
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- CN218239313U CN218239313U CN202221724991.4U CN202221724991U CN218239313U CN 218239313 U CN218239313 U CN 218239313U CN 202221724991 U CN202221724991 U CN 202221724991U CN 218239313 U CN218239313 U CN 218239313U
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Abstract
The utility model relates to a self-closing valve testing arrangement, comprises a workbench, be equipped with on the workstation and be used for the fixed establishment of location and the fixed self-closing valve that awaits measuring, be used for reciprocating fixture mechanism, be used for simulating the manual anchor clamps mechanism of the operation of drawing the valve and carrying the button open, be used for detecting the different atmospheric pressure state of self-closing valve and feed back the monitoring result to the response mechanism of controller, be used for simulating the manual canceling release mechanical system and the controller of pressing the operation of valve and carrying the button open. The utility model discloses a self-closing valve testing arrangement who obtains has following advantage: the automatic detection device has the advantages of accurate detection, high efficiency and high automation degree, can detect the performance of various states of the self-closing valve, and can effectively improve the quality and reliability of the self-closing valve product.
Description
Technical Field
The utility model relates to a gas valve detects technical field, especially relates to a self-closing valve testing arrangement.
Background
The gas self-closing valve for pipeline is installed on the pipeline of low-pressure gas system, and when the gas supply pressure of pipeline is under-pressure or over-pressure, it has no need of using electricity or other external power, and can be automatically closed and manually opened.
The test items of the pipeline gas self-closing valve are numerous, wherein the overpressure and the underpressure are the most critical indexes for judging whether the self-closing valve meets the standard or not. At present, most manufacturers do not detect or adopt a mode of manually building a simple test tool to detect, detection standards and detection means do not exist, detection results are inaccurate, the manual detection efficiency is low, the quality and the reliability of a self-closing valve product cannot be guaranteed, the safety of gas use of a user cannot be guaranteed, and the self-closing valve test equipment which is reliable and convenient to operate is lacked.
SUMMERY OF THE UTILITY MODEL
An object of the present application is to provide a self-closing valve testing device, which can reset the self-closing valve.
Another object of the present application is to provide a self-closing valve testing device, which can perform a performance test on a self-closing valve.
The technical scheme adopted by the application is as follows: a self-closing valve testing device comprises a workbench, wherein a fixing mechanism, a moving mechanism, a clamp mechanism, an induction mechanism, a reset mechanism and a controller are arranged on the workbench;
the fixing mechanism is used for positioning and fixing the self-closing valve to be detected;
the moving mechanism is used for moving the clamp mechanism up and down;
the clamp mechanism is used for simulating the operation of manually lifting and pulling the valve lifting knob;
the induction mechanism is used for detecting different air pressure states of the self-closing valve and feeding back a monitoring result to the controller;
the reset mechanism is used for simulating the operation of manually pressing the valve opening lifting button;
the controller is electrically connected with the fixing mechanism, the moving mechanism, the clamp mechanism, the sensing mechanism and the resetting mechanism and controls the normal operation of each mechanism. The fixing mechanism is connected with the workbench, the moving mechanism is connected with the clamp mechanism, the sensing mechanism is connected with the moving mechanism, the clamp mechanism, the sensing mechanism and the reset mechanism are all arranged above the valve opening lifting button, and the reset mechanism is connected with the clamp mechanism. The workbench comprises a bottom plate and a top plate, the bottom plate is connected with the top plate through a connecting column, the fixing mechanism is connected with the bottom plate, and the moving mechanism is connected with the top plate.
Compared with the prior art, the automatic valve resetting mechanism has the advantages that the resetting mechanism replaces manual pressing of the valve opening lifting button and is matched with the clamp mechanism for use, resetting work of the self-closing valve in each state can be completed, the automation degree and efficiency of testing are improved, the performance of the self-closing valve in an overpressure state, an under-pressure state and an overflowing state can be tested, the quality and the reliability of a self-closing valve product are improved, and the gas safety of a user is effectively improved.
In some embodiments of this application, canceling release mechanical system includes the cylinder that resets and resets the board, and the board that resets is used for pressing and opens the valve and carries the button, and the cylinder that resets is used for promoting the board that resets and pushes down, and the cylinder that resets and the board that resets are connected. The valve opening lifting button of the self-closing valve protrudes upwards under an overpressure state to keep the valve closed, at the moment, the self-closing valve needs to be reset in a continuous test, the reset cylinder drives the reset plate to move downwards, the reset plate is in contact with the valve opening lifting button, and the valve opening lifting button is pressed back to a normal working position to open the valve.
In some embodiments of the present application, the test device further comprises a flow regulating mechanism, and the flow regulating mechanism is used for regulating the test air pressure output from the self-closing valve to be tested. The flow regulating mechanism can control the flow at the rear end of the self-closing valve.
Furthermore, the flow regulating mechanism comprises a gate valve, a channel pipeline is arranged between the gate valve and the fixing mechanism, a motor used for rotating the gate valve is arranged on the gate valve, the motor is in transmission connection with a hand wheel of the gate valve, a second air outlet is arranged on the gate valve, a second air control valve is arranged between the second air outlet and the gate valve, and a third air control valve is arranged behind the second air control valve. The gate valve is used for simulating a ball valve on the self-closing valve, the motor is used for rotating a hand wheel of the gate valve to control the opening and closing of the gate valve, the second air control valve is used for controlling flow, and the third air control valve is used for controlling opening and closing.
Furthermore, an air leakage branch for simulating air leakage of the self-closing valve is arranged on the channel pipeline, and a first air control valve is arranged on the air leakage branch. The air leakage branch simulates the air leakage state between the valve core of the self-closing valve and the ball valve, and the first air control valve is used for controlling the opening and closing of the air leakage branch and the flow passing through the air leakage branch.
In some embodiments of the application, the device further comprises a rotating mechanism, and the rotating mechanism is used for simulating manual rotation of a rotary switch on the self-closing valve to be tested. The rotating mechanism replaces manual rotation of a rotary switch to control the opening and closing of the self-closing valve, and the opening and closing performance of the self-closing valve can be conveniently detected.
Furthermore, the rotating mechanism comprises a rotating cylinder and a rotating head, the rotating head is used for fixing a rotating switch of the self-closing valve, the rotating cylinder is used for driving the rotating head to rotate, and the rotating cylinder is connected with the rotating head. The rotating head is matched with a rotary switch on the self-closing valve, the rotating cylinder drives the rotating head to rotate, and the rotating head drives the rotary switch on the self-closing valve to rotate so as to realize the opening and closing of the self-closing valve.
In some embodiments of the application, the fixing mechanism includes a horizontal slide rail disposed on the workbench and a horizontal slider for positioning and fixing the self-closing valve to be tested, the horizontal slider can slide along the horizontal slide rail, a first plug and a second plug for plugging the self-closing valve are disposed on two sides of the horizontal slider, the first plug is fixed on the workbench, the second plug horizontally moves under the driving action of the driving cylinder, a first air outlet is disposed on the first plug, and a first air inlet is disposed on the second plug. Horizontal slide rail, first end cap and drive actuating cylinder all with bottom plate fixed connection, first gas outlet and passageway tube coupling. Before testing, the self-closing valve to be tested is installed on the station, the driving cylinder drives the second plug to plug one end of the self-closing valve to be tested, the self-closing valve to be tested moves along the horizontal sliding rail under the pushing of the driving cylinder until the other end of the self-closing valve to be tested is plugged by the first plug, and fixing of the self-closing valve to be tested is completed.
In some embodiments of the present application, the moving mechanism includes a lifting cylinder and a lifting plate, the lifting plate is used for fixing the clamp mechanism, and the lifting cylinder is used for pushing the lifting plate to move up and down. The lifting plate is connected with the rotary cylinder through a second connecting seat, and the lifting cylinder is fixedly connected with the top plate.
In some embodiments of the present application, the sensing mechanism includes a displacement sensor, the displacement sensor is disposed right above the fixed self-closing valve opening lifting button, and the displacement sensor is connected to the lifting plate. The displacement sensor is used for determining the state of the self-closing valve by sensing the distance of the lifting button of the split valve.
In some embodiments of the present application, the fixture mechanism includes a clamping cylinder and a clamping jaw, the clamping jaw is used for clamping a self-closing valve open valve lifting button, the clamping cylinder is used for driving the clamping jaw to clamp tightly, the lifting cylinder is used for driving the clamping jaw to ascend, the lifting cylinder is connected with the clamping cylinder through a first connecting seat, the lifting cylinder is fixedly connected with the lifting plate, and the first connecting seat is fixedly connected with the reset cylinder. During operation, die clamping cylinder drive clamping jaw presss from both sides tightly opens valve and carries button both sides, carries and draws cylinder drive connecting seat to rise, drives die clamping cylinder and clamping jaw and rises for the clamping jaw is accomplished and is carried and draw the action.
Furthermore, a first pressure taking port is arranged on the channel pipeline, and a first pressure sensor is arranged on the first pressure taking port. The first pressure taking port is arranged on the channel pipeline and is close to the first air outlet, so that the data measured by the first pressure sensor is accurate.
Furthermore, a second pressure taking port is formed in the second plug, and a second pressure sensor is arranged on the second pressure taking port. The second pressure taking port is arranged on the second plug and is close to the first air inlet, so that data measured by the second pressure sensor is accurate.
A self-closing valve testing method uses a self-closing valve testing device, and comprises the following steps:
placing the self-closing valve to be tested on the horizontal sliding block, and starting the driving cylinder to enable the first plug and the second plug to clamp the self-closing valve to be tested;
and introducing gas with rated inlet pressure from the first gas inlet, and pulling the valve lifting button by the clamp mechanism to confirm that the ball valve on the self-closing valve is opened.
If the dynamic overpressure cut-off pressure or closing time is tested, adjusting the second air control valve to enable the flow to reach 0.5 times of rated flow, slowly adjusting the inlet pressure to rise until the tested self-closing valve is automatically closed, and reading the reading of the second pressure sensor when the self-closing valve is automatically closed or reading the time for completely closing the self-closing valve; the inlet pressure is recovered, and the reset mechanism is pressed down to reset the self-closing valve;
if the overpressure cut-off pressure or closing time under the static state is tested, adjusting the second air control valve to enable the flow to reach 0.5 times of rated flow, closing the third air control valve, slowly adjusting the inlet pressure to rise until the tested self-closing valve is automatically closed, and reading the reading of the second pressure sensor when the automatic closing occurs or reading the time for completely closing the self-closing valve; the inlet pressure is recovered, and the reset mechanism is pressed down to reset the self-closing valve;
if the dynamic under-pressure cutoff pressure or closing time is tested, adjusting the second pneumatic control valve to enable the flow to reach the rated flow, slowly adjusting the inlet pressure to be reduced until the tested self-closing valve is automatically closed, and reading the reading of the second pressure sensor when the self-closing valve is automatically closed or reading the time for completely closing the self-closing valve; the inlet pressure is recovered, the clamp mechanism pulls the valve opening lifting button to reset the self-closing valve;
if the under-pressure cut-off pressure or the closing time under the static state is tested, adjusting the second pneumatic control valve to enable the flow to reach the rated flow, closing the third pneumatic control valve, slowly adjusting the inlet pressure to be reduced until the tested self-closing valve is automatically closed, and reading the reading of the second pressure sensor or the time for completely closing the self-closing valve when the automatic closing occurs; the inlet pressure is recovered, the clamp mechanism pulls the valve opening lifting button to reset the self-closing valve;
if the flow is cut off by testing the overcurrent, adjusting a second air control valve to increase the gas flow until the tested self-closing valve is automatically closed, and reading the flow when the automatic closing occurs; recovering the rated flow, and pulling the valve opening lifting button by the clamp mechanism to reset the self-closing valve;
if the overcurrent automatic closing performance under the overpressure is tested, adjusting a second pneumatic control valve to enable the flow to reach the rated flow, increasing the inlet pressure to 1.5 times of the rated inlet pressure, and checking whether the self-closing valve is closed or not;
if the under-pressure overflowing automatic closing performance is tested, gas with 0.5 time of rated inlet pressure is introduced from the inlet, the second pneumatic control valve is slowly adjusted to increase the gas flow, and whether the tested self-closing valve is automatically closed before the second pneumatic control valve is fully opened is checked;
if the overcurrent closing time is tested, removing the channel pipeline under the rated inlet pressure and rated flow, checking whether the self-closing valve is automatically closed, and measuring the time from removing the channel pipeline to completely closing the self-closing valve;
and if the rated flow is tested, adjusting a second pneumatic control valve to reduce the pressure of the first pressure sensor and the pressure of the second pressure sensor to 300Pa, and recording the flow at the moment.
Further, the testing step is repeated at least three times to obtain the same number of testing data as the repeated testing step, and the output data is the average value of the testing data.
Drawings
Fig. 1 is a front view of embodiment 1 of the present invention;
fig. 2 is a plan view of embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a flow regulating mechanism according to embodiment 1 of the present invention;
fig. 5 is a schematic structural view of the removing flow regulating mechanism and the fixing mechanism according to embodiment 1 of the present invention.
In the figure: 1. a work table; 11. a base plate; 12. a top plate; 13. connecting columns; 2. a fixing mechanism; 21. a horizontal slide rail; 22. a horizontal slider; 23. a first plug; 24. a second plug; 241. a second pressure-taking port; 242. a second pressure sensor; 25. a driving cylinder; 26. a first air outlet; 27. a first air inlet; 3. a moving mechanism; 31. a lifting cylinder; 32. a lifting plate; 4. a clamp mechanism; 41. a clamping cylinder; 42. a clamping jaw; 43. lifting the cylinder; 44. a first connecting seat; 5. an induction mechanism; 51. a displacement sensor; 6. a reset mechanism; 61. a reset cylinder; 62. a reset plate; 7. a flow regulating mechanism; 71. a gate valve; 72. a channel line; 721. a first pressure-taking port; 722. a first pressure sensor; 73. a motor; 74. a gas leakage branch; 75. a first pneumatic valve; 76. a second air outlet; 77. a second pneumatic control valve; 78. a third pneumatic control valve; 8. a rotation mechanism; 81. a rotating cylinder; 82. rotating the head; 83. a second connecting seat.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Example 1:
the self-closing valve testing device provided by the embodiment is shown in fig. 1 and 3, and comprises a workbench 1, wherein a fixing mechanism 2, a moving mechanism 3, a clamp mechanism 4, an induction mechanism 5, a reset mechanism 6 and a controller are arranged on the workbench 1;
the fixing mechanism 2 is used for positioning and fixing the self-closing valve to be tested;
the moving mechanism 3 is used for moving the clamp mechanism 4 up and down;
the clamp mechanism 4 is used for simulating the operation of manually lifting and pulling the valve lifting knob;
the induction mechanism 5 is used for detecting different air pressure states of the self-closing valve and feeding back a monitoring result to the controller;
the reset mechanism 6 is used for simulating the operation of manually pressing the valve opening lifting button;
the controller is electrically connected with the fixing mechanism 2, the moving mechanism 3, the clamp mechanism 4, the induction mechanism 5 and the reset mechanism 6 and controls the normal operation of each mechanism. The fixing mechanism 2 is connected with the workbench 1, the moving mechanism 3 is connected with the clamp mechanism 4, the sensing mechanism 5 is connected with the moving mechanism 3, the clamp mechanism 4, the sensing mechanism 5 and the reset mechanism 6 are all arranged above the valve opening lifting button, and the reset mechanism 6 is connected with the clamp mechanism 4. The workbench 1 comprises a bottom plate 11 and a top plate 12, the bottom plate 11 and the top plate 12 are connected through a connecting column 13, a fixing mechanism 2 is connected with the bottom plate 11, and a moving mechanism 3 is connected with the top plate 12.
Compared with the prior art, the reset mechanism 6 replaces manual pressing of the open valve lifting button and is matched with the clamp mechanism 4 for use, reset work of the self-closing valve in each state can be completed, the automation degree and the efficiency of testing are improved, the performance of overpressure, underpressure and overcurrent states of the self-closing valve can be tested, the quality and the reliability of self-closing valve products are improved, and the gas safety of a user is effectively improved.
The concrete structure is as follows:
for reliable reset, the reset mechanism 6 comprises a reset cylinder 61 and a reset plate 62, the reset plate 62 is used for pressing the valve opening lifting button, the reset cylinder 61 is used for pushing the reset plate 62 to press downwards, and the reset cylinder 61 is connected with the reset plate 62. The valve opening lifting button of the self-closing valve protrudes upwards to keep the valve closed in an overpressure state, at this time, the self-closing valve needs to be reset in a continuous test, the reset cylinder 61 drives the reset plate 62 to move downwards, the reset plate 62 is in contact with the valve opening lifting button, and the valve opening lifting button is pressed back to a normal working position to open the valve.
In order to facilitate the control of the output air pressure, the automatic closing valve testing device further comprises a flow regulating mechanism 7, and the flow regulating mechanism 7 is used for regulating the testing air pressure output from the self-closing valve to be tested. The flow regulating mechanism 7 can control the flow at the rear end of the self-closing valve.
In order to adjust the air pressure reliably, as shown in fig. 4, the flow adjusting mechanism 7 includes a gate valve 71, a passage pipeline 72 is disposed between the gate valve 71 and the fixing mechanism 2, a motor 73 for rotating the gate valve 71 is disposed on the gate valve 71, the motor 73 is in transmission connection with a hand wheel of the gate valve 71, a second air outlet 76 is disposed on the gate valve 71, a second air control valve 77 is disposed between the second air outlet 76 and the gate valve 71, and a third air control valve 78 is disposed behind the second air control valve 77. The gate valve 71 is used for simulating a ball valve on a self-closing valve, the motor 73 is used for rotating a hand wheel of the gate valve 71 to control the opening and closing of the gate valve 71, the second pneumatic control valve 77 is used for controlling flow, the third pneumatic control valve 78 is used for controlling opening and closing, and the second pneumatic control valve 77 and the third pneumatic control valve 78 can detect air pressure.
In order to simulate the air leakage of the self-closing valve, an air leakage branch 74 for simulating the air leakage of the self-closing valve is arranged on the channel pipeline 72, and a first air control valve 75 is arranged on the air leakage branch 74. The air leakage branch 74 simulates the air leakage state between the valve core and the ball valve of the self-closing valve, so that the performance test of the self-closing valve in the air leakage state is facilitated, and the first air control valve 75 is used for controlling the opening and closing of the air leakage branch 74 and the flow passing through the air leakage branch. The first pneumatic valve 75 may detect the air pressure.
In order to control the rotary switch on the self-closing valve conveniently, the automatic closing device further comprises a rotary mechanism 8, and the rotary mechanism 8 is used for simulating manual rotation of the rotary switch on the self-closing valve to be tested. The rotating mechanism 8 replaces a manual rotating rotary switch to control the opening and closing of the self-closing valve, so that the opening and closing performance of the self-closing valve can be conveniently detected.
For reliable rotation, the rotating mechanism 8 comprises a rotating cylinder 81 and a rotating head 82, the rotating head 82 is used for fixing a rotating switch of the self-closing valve, the rotating cylinder 81 is used for driving the rotating head 82 to rotate, and the rotating cylinder 81 is connected with the rotating head 82. The rotating head 82 is matched with a rotary switch on the self-closing valve, the rotating cylinder 81 drives the rotating head 82 to rotate, and the rotating head 82 drives the rotary switch on the self-closing valve to rotate so as to realize the opening and closing of the self-closing valve.
For reliable fixation, as shown in fig. 2, the fixing mechanism 2 includes a horizontal slide rail 21 disposed on the workbench 1 and a horizontal slider 22 for positioning and fixing the self-closing valve to be measured, the horizontal slider 22 can slide along the horizontal slide rail 21, a first plug 23 and a second plug 24 for plugging the self-closing valve are disposed on both sides of the horizontal slider 22, the first plug 23 is fixed on the workbench 1, the second plug 24 horizontally moves under the driving action of a driving cylinder 25, a first air outlet 26 is disposed on the first plug 23, and a first air inlet 27 is disposed on the second plug 24. The horizontal slide rail 21, the first plug 23 and the driving cylinder 25 are all fixedly connected with the bottom plate 11, and the first air outlet 26 is connected with the channel pipeline 72. Before testing, the self-closing valve to be tested is installed on the station, the driving cylinder 25 drives the second plug 24 to plug one end of the self-closing valve to be tested, the self-closing valve to be tested moves along the horizontal sliding rail 21 under the pushing of the driving cylinder 25 until the other end of the self-closing valve to be tested is plugged by the first plug 23, and the self-closing valve to be tested is fixed.
For reliable movement, the moving mechanism 3 comprises a lifting cylinder 31 and a lifting plate 32, the lifting plate 32 is used for fixing the clamp mechanism 4, and the lifting cylinder 31 is used for pushing the lifting plate 32 to move up and down. The lifting plate 32 is connected with the rotary cylinder 81 through a second connecting seat 83, and the lifting cylinder 31 is fixedly connected with the top plate 12.
In order to realize quick and reliable sensing, the sensing mechanism 5 comprises a displacement sensor 51, the displacement sensor 51 is arranged right above the fixed self-closing valve opening lifting button, and the displacement sensor 51 is fixedly connected with the lifting plate 32. The displacement sensor 51 can determine the state of the self-closing valve by sensing the distance of the valve-opening lifting button.
For clamping reliably, as shown in fig. 5, the clamping mechanism 4 includes a clamping cylinder 41, a clamping jaw 42, and a lifting cylinder 43, the clamping jaw 42 is used for clamping a self-closing valve open-valve lifting button, the clamping cylinder 41 is used for driving the clamping jaw 42 to clamp, the lifting cylinder 43 is used for driving the clamping jaw 42 to ascend, the lifting cylinder 43 is connected with the clamping cylinder 41 through a first connecting seat 44, the lifting cylinder 43 is fixedly connected with the lifting plate 32, and the first connecting seat 44 is fixedly connected with the resetting cylinder 61. When the lifting device works, the clamping cylinder 41 drives the clamping jaw 42 to clamp two sides of the valve opening lifting button, the lifting cylinder 43 drives the connecting seat 44 to ascend, and the clamping cylinder 41 and the clamping jaw 42 are driven to ascend, so that the clamping jaw 42 finishes lifting action.
In order to obtain more accurate pressure data, a first pressure tapping 721 is disposed on the channel pipe 72, and a first pressure sensor 722 is disposed on the first pressure tapping 721. The first pressure taking port 72 is provided on the passage pipe 72 in proximity to the first air outlet port 26, so that the data measured by the first pressure sensor 722 is accurate.
In order to obtain more accurate pressure data, a second pressure measuring port 241 is provided on the second plug 24, and a second pressure sensor 242 is provided on the second pressure measuring port 241. The second pressure measuring port 241 is disposed on the second plug 24, close to the first air inlet 27, so that the data measured by the second pressure sensor 242 is accurate.
Example 2:
the self-closing valve testing method provided by the embodiment uses a self-closing valve testing device, and comprises the following steps:
detecting the on-off state of the self-closing valve: placing the self-closing valve to be tested on the horizontal sliding block 22, and starting the driving cylinder 25 to enable the first plug 23 and the second plug 24 to clamp the self-closing valve to be tested;
when the gas with the rated inlet pressure is introduced from the first gas inlet 27, the clamping mechanism 4 pulls the valve lifting knob to confirm that the ball valve on the self-closing valve is opened.
If the dynamic overpressure cut-off pressure or closing time is tested, adjusting the second pneumatic control valve 77 to enable the flow to reach 0.5 times of rated flow, slowly adjusting the inlet pressure of the pressure regulator to rise until the self-closing valve to be tested is automatically closed, and reading the reading of the second pressure sensor 242 when the self-closing valve is automatically closed or reading the time for completely closing the self-closing valve; and the inlet pressure is recovered, and the resetting mechanism 6 is pressed down to reset the self-closing valve.
If the overpressure cut-off pressure or closing time under the static state is tested, adjusting the second pneumatic control valve 77 to enable the flow to reach 0.5 times of rated flow, closing the third pneumatic control valve 78, slowly adjusting the pressure rise of the inlet of the pressure regulator until the self-closing valve to be tested is automatically closed, and reading the reading of the second pressure sensor 242 or the time for completely closing the self-closing valve when the automatic closing occurs; and the inlet pressure is recovered, and the resetting mechanism 6 is pressed down to reset the self-closing valve.
If the dynamic under-pressure cut-off pressure or closing time is tested, adjusting the second pneumatic control valve 77 to enable the flow to reach the rated flow, slowly adjusting the inlet pressure of the pressure regulator to be reduced until the self-closing valve to be tested is automatically closed, and reading the reading of the second pressure sensor 242 when the self-closing occurs or reading the time for completely closing the self-closing valve; and (4) recovering the inlet pressure, and lifting the valve opening lifting button by the clamp mechanism 4 to reset the self-closing valve.
If the under-pressure cutoff pressure or closing time under the static state is tested, adjusting the second pneumatic control valve 77 to enable the flow to reach the rated flow, closing the third pneumatic control valve 78, slowly adjusting the inlet pressure of the pressure regulator to be reduced until the self-closing valve to be tested is automatically closed, and reading the reading of the second pressure sensor 242 or the time for completely closing the self-closing valve when the automatic closing occurs; and (4) recovering the inlet pressure, and lifting the valve opening lifting button by the clamp mechanism 4 to reset the self-closing valve.
If the flow is cut off by testing the overcurrent, adjusting a second pneumatic control valve 77 to increase the gas flow until the tested self-closing valve is automatically closed, and reading the flow when the automatic closing occurs; and recovering the rated flow, and pulling the valve opening lifting button by the clamp mechanism 4 to reset the self-closing valve.
If the over-pressure automatic closing performance is tested, the second pneumatic control valve 77 is adjusted to enable the flow to reach the rated flow, the inlet pressure is increased to 1.5 times of the rated inlet pressure, and whether the self-closing valve is closed or not is checked.
If the over-current automatic closing performance under the pressure is tested, gas with 0.5 times of rated inlet pressure is introduced from the inlet, the second pneumatic control valve 77 is slowly adjusted to increase the gas flow, and whether the tested self-closing valve is automatically closed before the second pneumatic control valve 77 is fully opened is checked.
If the excess flow shutoff time is tested, the channel line 72 is removed at the rated inlet pressure and rated flow, a check is made as to whether the self-closing valve is automatically closed, and the time from the removal of the channel line 72 to the full closure of the self-closing valve is determined.
If the rated flow rate is tested, the second pneumatic valve 77 is adjusted to lower the first pressure sensor 722 and the second pressure sensor 242 to 300Pa, and the flow rate at this time is recorded.
In order to output more accurate data, the testing step is repeated at least three times to obtain the same number of testing data as the repeated testing step, and the output data is the average value of the testing data.
Through the design, various performance tests of the self-closing valve under overpressure, undervoltage and overcurrent states can be completed, and repeated tests are carried out on data, so that the output data are more accurate, and the data reliability is improved. For the initial test gas generation and input regulation, existing technologies such as gas tanks, pressure regulators, etc. may be employed.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the equivalent embodiments by utilizing the above disclosed technical contents without departing from the technical scope of the present invention, but all the modifications, changes and changes of the technical spirit of the present invention made to the above embodiments are also within the scope of the technical solution of the present invention.
Claims (13)
1. A self-closing valve testing device comprises a workbench (1), and is characterized in that a fixing mechanism (2), a moving mechanism (3), a clamp mechanism (4), an induction mechanism (5), a reset mechanism (6) and a controller are arranged on the workbench (1);
the fixing mechanism (2) is used for positioning and fixing the self-closing valve to be tested;
the moving mechanism (3) is used for moving the clamp mechanism (4) up and down;
the clamp mechanism (4) is used for simulating the operation of manually lifting and pulling the valve lifting button;
the induction mechanism (5) is used for detecting different air pressure states of the self-closing valve and feeding back a monitoring result to the controller;
the reset mechanism (6) is used for simulating the operation of manually pressing the valve opening lifting button;
the controller is electrically connected with the fixing mechanism (2), the moving mechanism (3), the clamp mechanism (4), the sensing mechanism (5) and the reset mechanism (6).
2. A self-closing valve testing device according to claim 1, wherein: the device also comprises a flow regulating mechanism (7), wherein the flow regulating mechanism (7) is used for regulating the test air pressure output from the self-closing valve to be tested.
3. A self-closing valve testing apparatus according to claim 2, wherein: flow regulating mechanism (7) are equipped with passageway pipeline (72) including gate valve (71) between gate valve (71) and fixed establishment (2), are equipped with motor (73) that are used for rotating gate valve (71) on gate valve (71), and motor (73) are connected with the hand wheel transmission of gate valve (71), are equipped with second gas outlet (76) on gate valve (71), are equipped with second gas accuse valve (77) between second gas outlet (76) and gate valve (71), are equipped with third gas accuse valve (78) after second gas accuse valve (77).
4. A self-closing valve testing device according to claim 3, wherein: a first pressure taking port (721) is formed in the channel pipeline (72), and a first pressure sensor (722) is arranged on the first pressure taking port (721).
5. A self-closing valve testing device according to claim 3, wherein: an air leakage branch (74) used for simulating air leakage of the self-closing valve is arranged on the channel pipeline (72), and a first air control valve (75) is arranged on the air leakage branch (74).
6. A self-closing valve testing apparatus according to claim 1, wherein: the reset mechanism (6) comprises a reset cylinder (61) and a reset plate (62), the reset plate (62) is used for pressing the valve opening lifting button, and the reset cylinder (61) is used for pushing the reset plate (62) to press downwards.
7. A self-closing valve testing apparatus according to claim 1, wherein: fixing mechanism (2) including setting up horizontal slide rail (21) on workstation (1) and being used for the location and fixed horizontal slider (22) of waiting to await measuring self-closing valve, horizontal slider (22) can slide along horizontal slide rail (21), horizontal slider (22) both sides all are equipped with first end cap (23) and second end cap (24) that are used for plugging up the self-closing valve, first end cap (23) are fixed on workstation (1), horizontal migration under second end cap (24) the driving action through actuating cylinder (25), be equipped with first gas outlet (26) on first end cap (23), be equipped with first air inlet (27) on second end cap (24).
8. A self-closing valve testing device according to claim 7, wherein: and a second pressure taking opening (241) is formed in the second plug (24), and a second pressure sensor (242) is arranged on the second pressure taking opening (241).
9. A self-closing valve testing device according to claim 1, wherein: the device is characterized by further comprising a rotating mechanism (8), wherein the rotating mechanism (8) is used for simulating manual rotation of a rotary switch on the self-closing valve to be tested.
10. A self-closing valve testing apparatus according to claim 9 wherein: the rotating mechanism (8) comprises a rotating cylinder (81) and a rotating head (82), the rotating head (82) is used for fixing a rotary switch of the self-closing valve, and the rotating cylinder (81) is used for driving the rotating head (82) to rotate.
11. A self-closing valve testing device according to claim 1, wherein: the moving mechanism (3) comprises a lifting cylinder (31) and a lifting plate (32), the lifting plate (32) is used for fixing the clamp mechanism (4), and the lifting cylinder (31) is used for pushing the lifting plate (32) to move up and down.
12. A self-closing valve testing apparatus according to claim 1, wherein: the clamp mechanism (4) comprises a clamping cylinder (41), a clamping jaw (42) and a lifting cylinder (43), the clamping jaw (42) is used for clamping a self-closing valve opening lifting button, the clamping cylinder (41) is used for driving the clamping jaw (42) to clamp, the lifting cylinder (43) is used for driving the clamping jaw (42) to ascend, and the lifting cylinder (43) is connected with the clamping cylinder (41) through a first connecting seat (44).
13. A self-closing valve testing device according to claim 1, wherein: the induction mechanism (5) comprises a displacement sensor (51), and the displacement sensor (51) is arranged right above the fixed self-closing valve opening lifting button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221724991.4U CN218239313U (en) | 2022-07-06 | 2022-07-06 | Self-closing valve testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221724991.4U CN218239313U (en) | 2022-07-06 | 2022-07-06 | Self-closing valve testing device |
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| Publication Number | Publication Date |
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| CN218239313U true CN218239313U (en) | 2023-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221724991.4U Active CN218239313U (en) | 2022-07-06 | 2022-07-06 | Self-closing valve testing device |
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| CN (1) | CN218239313U (en) |
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