CN111289240A - Fatigue detection platform, detection system and detection method for stop valve of LPG integrated valve - Google Patents
Fatigue detection platform, detection system and detection method for stop valve of LPG integrated valve Download PDFInfo
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- CN111289240A CN111289240A CN202010205371.9A CN202010205371A CN111289240A CN 111289240 A CN111289240 A CN 111289240A CN 202010205371 A CN202010205371 A CN 202010205371A CN 111289240 A CN111289240 A CN 111289240A
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- 238000001514 detection method Methods 0.000 title claims abstract description 56
- 238000012360 testing method Methods 0.000 claims abstract description 116
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 230000010354 integration Effects 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000003584 silencer Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 45
- 239000003915 liquefied petroleum gas Substances 0.000 description 35
- 238000009661 fatigue test Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910000743 fusible alloy Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000029305 taxis Effects 0.000 description 1
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The invention discloses a fatigue detection platform, a detection system and a detection method for a stop valve of an LPG integrated valve, which comprise a gas tank, a test valve, a universal connector, a servo motor, an adjusting assembly and a rotating base, wherein the inlet of the gas tank is connected with a gas inlet source, and the outlet of the gas tank is connected with the test valve; the test valve is connected with the universal connector through a rotating cap; the universal connector is connected with the servo motor through the series mechanism and is driven by the servo motor to open and close the test valve; the servo motor is fixed on the adjusting component capable of turning 180 degrees and used for driving the series mechanism to realize the switching of the rotating cap of the test valve; the adjusting assembly is fixed on a rotating base capable of adjusting the angle and used for realizing the on-off control of the test valve in the axial direction or the radial direction of the integrated valve by the servo motor; the rotary base is fixed on a robot assembly capable of moving in the XYZ direction, and can adjust the angle of the output direction of the servo motor so as to realize the on-off control of the servo motor on the test valve in the radial direction of the integrated valve.
Description
Technical Field
The invention relates to the technical field of stop valve fatigue tests, in particular to a stop valve fatigue detection platform, a detection system and a detection method of an LPG integrated valve.
Background
The cylinder valve is an important source of accidents. At present, gas cylinder accidents are the most frequent equipment in pressure-bearing special equipment in China, and the accidents caused by the problems of product quality and the like of gas cylinder valves account for more than half of the gas cylinder accidents. For example, the natural gas cylinder for vehicles is used in festive places and the like, the temperature in a carriage may exceed 80 ℃ in the case of high temperature in summer, and at the temperature, some unqualified fusible alloy is melted and released, so that the automobile is burnt and even explodes, and great personnel and property loss is caused. However, the problem of the liquefied petroleum gas cylinder for the automobile is also many. Since the liquefied petroleum gas is easily leaked and the liquefied petroleum gas has a higher density than air, a relatively large explosion occurs upon leakage. At present, a large number of motor vehicles for liquefied petroleum gas appear in China. Since 2003 in Shanghai, the number of running LPG moped exceeds 28 thousands, meanwhile, at present, a plurality of cities including Guangzhou in China popularize and apply liquefied petroleum gas energy sources on vehicles such as taxis, buses and the like, and various test valves on an LPG integrated valve become an important potential safety hazard.
The invention aims at solving the problem of improving the fatigue detection device of the stop valve of the existing LPG integrated valve.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a stop valve fatigue detection platform, a detection system and a detection method of an LPG integrated valve, which can detect the fatigue and the durability of various test valves on the LPG integrated valve.
In order to achieve the above purpose, the technical solution for solving the technical problem is as follows:
the invention discloses a stop valve fatigue detection platform of an LPG integrated valve, which comprises a gas tank, a test valve, a universal connector, a servo motor, an adjusting assembly and a rotating base, wherein:
the inlet of the gas tank is connected with an external gas inlet source, and the corresponding outlet is connected with the test valve;
the test valve is connected with the universal connector through a rotating cap;
the universal connector is connected with the servo motor through a series mechanism, and the test valve is switched on and off under the driving of positive and negative rotation of the servo motor;
the servo motor is fixed on an adjusting component capable of turning 180 degrees and used for driving the whole series mechanism to realize the switching of the rotating cap of the test valve;
the adjusting assembly is fixed on a rotating base capable of adjusting the angle and used for realizing the on-off control of the servo motor on the test valve in the axial direction or the radial direction of the integrated valve;
the rotary base is fixed on a robot assembly capable of moving in the directions of XYZ three axes, and can adjust the angle of the output direction of the servo motor, so that the servo motor can control the opening and closing of the test valve in the radial direction of the integrated valve.
Further, the serial connection mechanism comprises a rigid guide rod, a motor output shaft connector and a servo motor output shaft, wherein:
the output shaft of the servo motor is connected with the servo motor;
the motor output shaft connector connects one end of the rigid guide rod with the output shaft of the servo motor;
the other end of the rigid guide rod is connected with the universal connector.
Further, universal joint includes mutual fixed connection's cross universal joint and test valve chuck, wherein:
the cross universal joint is also connected with the rigid guide rod;
the test valve cartridge clamps the test valve.
Further, still including set gradually filter, relief pressure valve, manometer and the solenoid valve between the import of air inlet source and gas pitcher, wherein:
the filter is arranged close to the air inlet source and used for filtering the air inlet source;
the pressure reducing valve is arranged between the filter and the inlet of the gas tank and is used for reducing the pressure of an inlet gas source so as to set the pressure of a test;
the pressure gauge is arranged between the pressure reducing valve and the inlet of the gas tank and is used for observing the pressure of the decompressed intake gas source in real time;
the electromagnetic valve is arranged between the pressure gauge and the inlet of the gas tank and used for controlling the on-off of the gas inlet source.
Further, the test valve further comprises a robot assembly, and the robot assembly, the adjusting assembly and the rotating base are jointly used for adjusting the test valve to a specified position.
Further, the robot assembly includes first slide rail, robot chassis, second slide rail, robot base, robot support, third slide rail and unipolar robot, wherein:
the number of the first sliding rails is two, the first sliding rails are arranged in parallel with each other and are arranged in parallel with the tank body of the gas tank;
the robot chassis is placed on the first slide rail and can move left and right along the X-axis direction;
the second sliding rail is arranged at the upper end of the robot chassis and is perpendicular to the first sliding rail;
the robot base is placed on the second slide rail and can move back and forth along the Y-axis direction;
the robot bracket is vertically arranged on the robot base;
the third slide rail is arranged on one side, facing the gas tank, of the robot support;
the single-shaft robot is placed on the third slide rail and can move up and down along the Z-axis direction.
Further, a first pressure sensor is included, the first pressure sensor being provided at an inlet of the gas tank for detecting a pressure of the gas tank.
Further, the test valve further comprises a second pressure sensor and a silencer, wherein the second pressure sensor and the silencer are arranged at the outlet of the test valve and used for detecting the exhaust pressure of the test valve.
The invention also discloses a stop valve fatigue detection system of the LPG integrated valve, which comprises the stop valve fatigue detection platform of the LPG integrated valve and a control system, wherein:
and the control system adopts a PLC computer control system and is connected with the first pressure sensor, the second pressure sensor, the test valve and the servo motor.
The invention also discloses a detection method of the stop valve fatigue detection system of the LPG integrated valve, which utilizes the stop valve fatigue detection system of the LPG integrated valve to detect and specifically comprises the following steps:
step 1: the air pressure regulating valve is connected with a driving air inlet air source, the driving air pressure is regulated by regulating the driving air reducing valve to set the experimental pressure, and a first pressure sensor at the air inlet of the air tank detects the pressure of the air tank;
step 2: turning over the adjusting assembly to a position corresponding to the test valve and integrating the axial direction or the radial direction of the valve;
and step 3: adjusting the rotary base to enable the direction of the output shaft of the servo motor to be along the direction corresponding to the test valve;
and 4, step 4: connecting a universal connector of an output shaft of the servo motor to a rotating cap of the test valve, and fixing;
and 5: sending a signal according to the requirement to move the single-axis robot in the XYZ three-axis direction, so that the servo motor is in a proper position;
step 6: connecting a second pressure sensor and a silencer to the outlet of the test valve, and setting durability parameters in a control system;
and 7: starting a servo motor to rotate at a set frequency to drive the universal connector to rotate, opening the test valve, discharging compressed air in the air tank from the test valve, and detecting the exhaust pressure by the second pressure sensor;
and 8: the second pressure sensor feeds the detected pressure back to the control system to indicate that the test valve is opened, then signals are sent to enable the servo motor to rotate reversely to drive the universal connector to rotate reversely, the test valve is closed, and the second pressure sensor detects zero pressure after the test valve is closed;
and step 9: when the second pressure sensor detects zero pressure, the control system signals to repeat steps 7 and 8 to carry out a durability test on the test valve, and when the first pressure sensor at the gas tank inlet detects that the pressure in the gas tank is lower than 6BAR in the test process, the control system signals to enable the gas source to charge the gas tank;
step 10: when the test times reach the set times, the control system sends signals to stop the servo motor from rotating, meanwhile, the control system sends signals to exhaust the gas in the gas tank to the outside of the gas tank, then the universal connector is unscrewed, and finally the test valve is taken out to complete the fatigue detection of the test valve;
step 11: when the test valve at another angle on the integrated valve needs to be detected, the rotary base and the adjusting assembly are adjusted, the single-shaft robot in the XYZ three-axis directions is moved to a specified position, and then the operations are repeated.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
the fatigue detection platform for the stop valve of the LPG integrated valve can realize the fatigue detection test of the test valve in multiple directions on the LPG integrated valve, has high automation degree, and realizes the repeated opening and closing of the test valve by driving the universal connecting joint through the serial mechanism by the positive and negative rotation of the servo motor. The series mechanism similar to the universal coupling is used for transmission, so that the number of turns of the output end of the servo motor is consistent with the number of turns of the valve head connected with the tail end of the series mechanism, and the reliability of valve fatigue detection is greatly improved. Meanwhile, the servo motor can repeatedly switch on and off the test valves at different positions of the integrated valve by adjusting the adjusting assembly, the rotating base and the XYZ robot assembly, and the state of the test valve is detected by the pressure sensor, so that the durability of the test valve of the LPG integrated valve is detected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of a stop valve fatigue detection platform of an LPG integrated valve of the present invention;
FIG. 2 is a schematic diagram of the adjustment assembly and tandem mechanism in the stop valve fatigue detection platform of the LPG integrated valve of the present invention;
FIG. 3 is a schematic diagram of the servo motor in the fatigue detection platform of the stop valve of the LPG integrated valve of the present invention adjusted to the axial position of the integrated valve;
FIG. 4 is a schematic enlarged view of a portion of a servo motor in a fatigue detection platform of a stop valve of an LPG integrated valve of the present invention adjusted to the axial position of the integrated valve;
FIG. 5 is a side view of a shut-off valve fatigue detection platform of the LPG integrated valve of the present invention;
FIG. 6 is a rear view of a shut-off valve fatigue detection platform of the LPG integrated valve of the present invention;
FIG. 7 is a top view of a shut-off valve fatigue detection platform of the LPG integrated valve of the present invention;
FIG. 8 is a perspective view of a shut-off valve fatigue detection platform of the LPG integrated valve of the present invention;
fig. 9 is a flow chart illustrating a detection method of the fatigue detection system of the stop valve of the LPG integrated valve according to the present invention.
[ description of main symbols ]
1-a gas tank;
2-universal joint;
3-a servo motor;
4-adjusting the assembly;
5-rotating the base;
6-rigid guide rod;
7-motor output shaft connector;
8-cross universal joint;
9-test valve cartridge;
10-a first slide rail;
11-a robot chassis;
12-a second slide rail;
13-a robot base;
14-a robot stand;
15-single axis robot;
16-first pressure sensor.
Detailed Description
While the embodiments of the present invention will be described and illustrated in detail with reference to the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, equivalents, and alternatives falling within the scope of the invention as defined by the appended claims.
Example one
As shown in fig. 1-8, the invention discloses a fatigue detection platform for a stop valve of an LPG integrated valve, comprising a gas tank 1, a test valve (not shown), a universal joint 2, a servo motor 3, an adjusting assembly 4 and a rotary base 5, wherein:
the inlet of the gas tank 1 is connected with an external gas inlet source (not shown), and the corresponding outlet is connected with a test valve;
the test valve is connected with the universal connector 2 through a rotating cap; during testing, the rotating cap of the testing valve and the universal connector 2 are fixed in position through jackscrews.
The universal connector 2 is connected with the servo motor 3 through a series mechanism, and is driven by the servo motor 3 to open and close the test valve under the driving of positive and negative rotation;
the servo motor 3 is fixed on an adjusting component 4 capable of turning 180 degrees and is used for driving the whole series mechanism to realize the switching of a rotating cap of the test valve;
the adjusting assembly 4 is fixed on a rotating base 5 capable of adjusting the angle, and is used for realizing the on-off control of the servo motor 3 on the test valve in the axial direction or the radial direction of the integrated valve; that is, the adjustment assembly 4 can adjust the output direction of the servo motor 3 to output in both the radial and axial directions of the integration valve.
The rotating base 5 is fixed on a robot assembly capable of moving in the directions of the three axes of XYZ and the three axes of XYZ, and can adjust the angle of the output direction of the servo motor 3, so as to realize that the servo motor 3 performs on-off control on the test valve in the radial direction of the integrated valve. That is, the rotary base 5 can adjust the output direction of the servo motor 3 to output in the radial direction of the integration valve.
In fig. 2, the series mechanism includes a rigid guide rod 6, a motor output shaft connector 7 and a servo motor output shaft (not labeled), and the servo motor output shaft is connected with the servo motor 3; the motor output shaft connector 7 is used for connecting one end of the rigid guide rod 6 with the output shaft of the servo motor; the other end of the rigid guide rod 6 is connected with the universal connector 2. In this embodiment, the serial mechanism transmits, and the number of turns of the output end of the servo motor is ensured to be consistent with the number of turns of the test valve connected to the tail end of the serial mechanism.
With continued reference to fig. 2, the universal joint 2 includes a universal joint cross 8 and a test valve chuck 9 fixedly connected to each other, and the universal joint cross 8 is further connected to the rigid guide rod 6; the test valve cartridge 9 clamps the test valve.
In this embodiment, the detection platform further includes a filter (not shown), a pressure reducing valve (not shown), a pressure gauge (not shown) and an electromagnetic valve (not shown) sequentially disposed between the intake air source and the inlet of the air tank 1, wherein:
the filter is arranged close to the air inlet source and used for filtering the air inlet source;
the pressure reducing valve is arranged between the filter and the inlet of the gas tank 1 and is used for reducing the pressure of an inlet gas source so as to set the pressure of a test;
the pressure gauge is arranged between the pressure reducing valve and the inlet of the gas tank 1 and is used for observing the pressure of the decompressed gas inlet source in real time;
the electromagnetic valve is arranged between the pressure gauge and the inlet of the gas tank 1 and used for controlling the on-off of the gas inlet source.
Further, the detection platform further comprises a robot assembly, and the robot assembly, the adjusting assembly 4 and the rotating base 5 are jointly used for adjusting the test valve to a specified position. Specifically, the robot assembly includes a first slide rail 10, a robot chassis 11, a second slide rail 12, a robot base 13, a robot support 14, a third slide rail (not shown), and a single-axis robot 15, wherein:
the number of the first slide rails 10 is two, the first slide rails are arranged in parallel with each other and are arranged in parallel with the tank body of the gas tank 1;
the robot chassis 11 is placed on the first slide rail 10 and can move left and right along the X-axis direction;
the second slide rail 12 is arranged at the upper end of the robot chassis 11 and is perpendicular to the first slide rail 10;
the robot base 13 is placed on the second slide rail 12 and can move back and forth along the Y-axis direction;
the robot support 14 is vertically arranged on the robot base 13;
the third slide rail is arranged on the side of the robot support 14 facing the gas tank 1;
the single-axis robot 15 is placed on the third slide rail and can move up and down along the Z-axis direction.
Preferably, the detection platform further comprises a first pressure sensor 16, the first pressure sensor 16 being arranged at an inlet of the gas tank 1 for detecting a pressure of the gas tank 1.
Preferably, the detection platform further comprises a second pressure sensor (not shown) and a muffler (not shown), and the second pressure sensor and the muffler are arranged at the outlet of the test valve and are used for detecting the exhaust pressure of the test valve.
The fatigue testing device can realize the fatigue testing of the testing valve in multiple directions on the LPG integrated valve, simultaneously ensure the consistency of the number of turns of the output end of the motor and the number of times of opening and closing of the rotating cap of the testing valve, and greatly improve the reliability of the fatigue testing of the valve.
Example two
The invention also discloses a stop valve fatigue detection system of the LPG integrated valve, which comprises the stop valve fatigue detection platform of the LPG integrated valve and a control system (not shown), wherein:
the control system adopts a PLC computer control system and is connected with the first pressure sensor 16, the second pressure sensor, the test valve and the servo motor 3.
EXAMPLE III
As shown in fig. 9, the invention also discloses a detection method of the stop valve fatigue detection system of the LPG integrated valve, which uses the stop valve fatigue detection system of the LPG integrated valve to perform detection, and specifically comprises the following steps:
step 1: the air source of the driving air inlet is connected, the experimental pressure is set by adjusting the pressure of the driving air through adjusting the pressure reducing valve of the driving air, and the first pressure sensor 16 at the air inlet of the air tank 1 detects the pressure of the air tank 1;
step 2: turning over the adjusting assembly 4 to a position corresponding to the test valve and integrating the axial direction or the radial direction of the valve;
and step 3: adjusting the rotary base 5 to enable the direction of the output shaft of the servo motor to be along the direction corresponding to the test valve;
and 4, step 4: connecting a universal connector 2 of an output shaft of the servo motor to a rotating cap of the test valve and fixing the universal connector;
and 5: sending a signal as required to move the single-axis robot 15 in the XYZ three-axis direction so that the servo motor 3 is in a proper position;
step 6: connecting a second pressure sensor and a silencer to the outlet of the test valve, and setting durability parameters in a control system;
and 7: starting a servo motor 3 to rotate at a set frequency to drive the universal connector 2 to rotate, simultaneously opening the test valve, discharging compressed air in the air tank 1 from the test valve, and detecting the exhaust pressure by a second pressure sensor;
and 8: the second pressure sensor feeds the detected pressure back to the control system to indicate that the test valve is opened, then signals are sent to enable the servo motor 3 to rotate reversely to drive the universal connector 2 to rotate reversely, the test valve is closed, and the second pressure sensor detects zero pressure after the test valve is closed;
and step 9: after the second pressure sensor detects zero pressure, the control system signals to repeat steps 7 and 8 to perform a durability test on the test valve, and during the test, when the first pressure sensor 16 at the inlet of the gas tank 1 detects that the pressure in the gas tank 1 is lower than 6BAR, the control system signals to enable the gas source to charge the gas tank 1;
step 10: when the test times reach the set times, the control system signals to stop the servo motor 3, simultaneously the control system signals to discharge the gas in the gas tank 1 out of the gas tank 1, then the universal connector 2 is unscrewed, and finally the test valve is taken out to complete the fatigue detection of the test valve;
step 11: when it is necessary to inspect the test valve at another angle on the integration valve, the spin base 5 and the adjustment assembly 4 are adjusted, and the single-axis robot 15 in the three-axis directions of XYZ is moved to a specified position, and then the above operations are repeated.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
- The stop valve fatigue detection platform of LPG integrated valve, its characterized in that includes gas pitcher, test valve, universal connector, servo motor, adjustment subassembly and rotating base, wherein:the inlet of the gas tank is connected with an external gas inlet source, and the corresponding outlet is connected with the test valve;the test valve is connected with the universal connector through a rotating cap;the universal connector is connected with the servo motor through a series mechanism, and the test valve is switched on and off under the driving of positive and negative rotation of the servo motor;the servo motor is fixed on an adjusting component capable of turning 180 degrees and used for driving the whole series mechanism to realize the switching of the rotating cap of the test valve;the adjusting assembly is fixed on a rotating base capable of adjusting the angle and used for realizing the on-off control of the servo motor on the test valve in the axial direction or the radial direction of the integrated valve;the rotary base is fixed on a robot assembly capable of moving in the directions of XYZ three axes, and can adjust the angle of the output direction of the servo motor, so that the servo motor can control the opening and closing of the test valve in the radial direction of the integrated valve.
- 2. The LPG integration valve stop valve fatigue detection platform of claim 1, wherein the series mechanism comprises a rigid guide rod, a motor output shaft connector and a servo motor output shaft, wherein:the output shaft of the servo motor is connected with the servo motor;the motor output shaft connector connects one end of the rigid guide rod with the output shaft of the servo motor;the other end of the rigid guide rod is connected with the universal connector.
- 3. A stop valve fatigue detecting platform for LPG integrated valve according to claim 2, wherein said universal joint comprises a cross universal joint and a test valve cartridge fixedly connected to each other, wherein:the cross universal joint is also connected with the rigid guide rod;the test valve cartridge clamps the test valve.
- 4. The fatigue detection platform for the stop valve of the LPG integration valve according to claim 1, further comprising a filter, a pressure reducing valve, a pressure gauge and an electromagnetic valve sequentially disposed between the intake air source and the inlet of the air tank, wherein:the filter is arranged close to the air inlet source and used for filtering the air inlet source;the pressure reducing valve is arranged between the filter and the inlet of the gas tank and is used for reducing the pressure of an inlet gas source so as to set the pressure of a test;the pressure gauge is arranged between the pressure reducing valve and the inlet of the gas tank and is used for observing the pressure of the decompressed intake gas source in real time;the electromagnetic valve is arranged between the pressure gauge and the inlet of the gas tank and used for controlling the on-off of the gas inlet source.
- 5. The LPG integration valve shut-off valve fatigue detection platform of claim 1, further comprising a robotic assembly, the robotic assembly, an adjustment assembly and a rotating base collectively for adjusting the test valve to a specified position.
- 6. The LPG integration valve stop valve fatigue detection platform of claim 5, wherein the robot assembly comprises a first slide rail, a robot chassis, a second slide rail, a robot base, a robot support, a third slide rail and a single axis robot, wherein:the number of the first sliding rails is two, the first sliding rails are arranged in parallel with each other and are arranged in parallel with the tank body of the gas tank;the robot chassis is placed on the first slide rail and can move left and right along the X-axis direction;the second sliding rail is arranged at the upper end of the robot chassis and is perpendicular to the first sliding rail;the robot base is placed on the second slide rail and can move back and forth along the Y-axis direction;the robot bracket is vertically arranged on the robot base;the third slide rail is arranged on one side, facing the gas tank, of the robot support;the single-shaft robot is placed on the third slide rail and can move up and down along the Z-axis direction.
- 7. The LPG integration valve cut-off valve fatigue detecting platform of claim 1, further comprising a first pressure sensor provided at an inlet of the gas tank for detecting the pressure of the gas tank.
- 8. The fatigue detecting platform of a stop valve for an LPG integration valve according to claim 1, further comprising a second pressure sensor and a muffler disposed at an outlet of the test valve for detecting a discharge pressure of the test valve.
- A cut-off valve fatigue detecting system of an LPG integrated valve, comprising the cut-off valve fatigue detecting platform of an LPG integrated valve as set forth in any one of claims 1 to 8 and a control system, wherein:and the control system adopts a PLC computer control system and is connected with the first pressure sensor, the second pressure sensor, the test valve and the servo motor.
- The method for detecting the fatigue detection system of the stop valve of the LPG integrated valve, which is characterized by using the fatigue detection system of the stop valve of the LPG integrated valve as claimed in claim 9, comprises the following steps:step 1: the air pressure regulating valve is connected with a driving air inlet air source, the driving air pressure is regulated by regulating the driving air reducing valve to set the experimental pressure, and a first pressure sensor at the air inlet of the air tank detects the pressure of the air tank;step 2: turning over the adjusting assembly to a position corresponding to the test valve and integrating the axial direction or the radial direction of the valve;and step 3: adjusting the rotary base to enable the direction of the output shaft of the servo motor to be along the direction corresponding to the test valve;and 4, step 4: connecting a universal connector of an output shaft of the servo motor to a rotating cap of the test valve, and fixing;and 5: sending a signal according to the requirement to move the single-axis robot in the XYZ three-axis direction, so that the servo motor is in a proper position;step 6: connecting a second pressure sensor and a silencer to the outlet of the test valve, and setting durability parameters in a control system;and 7: starting a servo motor to rotate at a set frequency to drive the universal connector to rotate, opening the test valve, discharging compressed air in the air tank from the test valve, and detecting the exhaust pressure by the second pressure sensor;and 8: the second pressure sensor feeds the detected pressure back to the control system to indicate that the test valve is opened, then signals are sent to enable the servo motor to rotate reversely to drive the universal connector to rotate reversely, the test valve is closed, and the second pressure sensor detects zero pressure after the test valve is closed;and step 9: when the second pressure sensor detects zero pressure, the control system signals to repeat steps 7 and 8 to carry out a durability test on the test valve, and when the first pressure sensor at the gas tank inlet detects that the pressure in the gas tank is lower than 6BAR in the test process, the control system signals to enable the gas source to charge the gas tank;step 10: when the test times reach the set times, the control system sends signals to stop the servo motor from rotating, meanwhile, the control system sends signals to exhaust the gas in the gas tank to the outside of the gas tank, then the universal connector is unscrewed, and finally the test valve is taken out to complete the fatigue detection of the test valve;step 11: when the test valve at another angle on the integrated valve needs to be detected, the rotary base and the adjusting assembly are adjusted, the single-shaft robot in the XYZ three-axis directions is moved to a specified position, and then the operations are repeated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010205371.9A CN111289240B (en) | 2020-03-20 | 2020-03-20 | Stop valve fatigue detection platform, detection system and detection method of LPG integrated valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010205371.9A CN111289240B (en) | 2020-03-20 | 2020-03-20 | Stop valve fatigue detection platform, detection system and detection method of LPG integrated valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111289240A true CN111289240A (en) | 2020-06-16 |
| CN111289240B CN111289240B (en) | 2024-08-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112683566A (en) * | 2020-12-31 | 2021-04-20 | 北京中瑞和电气有限公司 | Fatigue test system and method for high-speed pressure relief explosion-proof device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994883A (en) * | 2014-05-06 | 2014-08-20 | 上海市特种设备监督检验技术研究院 | Stop-valve fatigue testing machine of LPG pile-up valve |
| CN211652063U (en) * | 2020-03-20 | 2020-10-09 | 上海应用技术大学 | Fatigue detection platform and detection system for stop valve of LPG integrated valve |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994883A (en) * | 2014-05-06 | 2014-08-20 | 上海市特种设备监督检验技术研究院 | Stop-valve fatigue testing machine of LPG pile-up valve |
| CN211652063U (en) * | 2020-03-20 | 2020-10-09 | 上海应用技术大学 | Fatigue detection platform and detection system for stop valve of LPG integrated valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683566A (en) * | 2020-12-31 | 2021-04-20 | 北京中瑞和电气有限公司 | Fatigue test system and method for high-speed pressure relief explosion-proof device |
| CN112683566B (en) * | 2020-12-31 | 2023-06-23 | 北京中瑞和电气有限公司 | Fatigue test system and method for high-speed pressure relief explosion-proof device |
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| CN111289240B (en) | 2024-08-16 |
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