A synchronism testing device and method for a two-way stop valve

Abstract

The present invention discloses a synchronization test device and a test method for a two-way stop valve, which belongs to the field of valve testing technology. The device comprises a first body and a second body, wherein the first body comprises a gas access passage and a liquid access passage; the second body comprises a first medium throttle opening and a second medium throttle opening, wherein the first medium throttle opening is connected to the first medium passage, and the second medium throttle opening is connected to the second medium passage, and the first medium throttle opening is connected to a first pressure sensor, and the second medium throttle opening is connected to a second pressure sensor. The synchronization test device for a two-way stop valve in the present application can synchronously simulate the input and output conditions of the two-way stop valve to realize offline testing of the two-way stop valve and obtain the synchronous opening and closing conditions of the two medium passages of the two-way stop valve. The device has a simple overall structure, is easy to test, and can accurately obtain the synchronous on-off conditions of the two-way stop valve.

Description

Technical Field

[0001] The present invention belongs to the technical field of valve testing, and in particular relates to a synchronization testing device and a testing method for a two-way stop valve. Background Art

[0002] A pneumatic stop valve is a stop valve that uses compressed air as a driving source. It is mainly used to open or cut off the flow of pipelines. It has the advantages of high control accuracy, high reliability, strong adaptability and good safety performance. It can be widely used in petrochemical, electric power, pharmaceutical, food and beverage, water treatment and other industries.

[0003] In the field of liquid attitude control technology, some engines use strong oxidizers and corrosive fuels as their working media. These engines require electromagnetic pneumatic two-way shutoff valves to control the flow of the oxidizer and fuel. These valves use electric current to control the operation of electromagnets, thereby controlling the inflow and outflow of gases. The controlled gases correspondingly drive the pistons in the oxidizer and fuel valves, enabling the two paths to open and close. These solenoid valves place special demands on the synchronization of the response times of the oxidizer and fuel paths. However, corrosive fuels make it difficult to achieve synchronization between the oxidizer and fuel paths using conventional methods, making it difficult to achieve synchronization with the electromagnetic pneumatic two-way shutoff valves. Summary of the Invention

[0004] In response to one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a synchronization testing device for a two-way stop valve, which is used to solve the problem that the existing testing method is difficult to obtain the synchronous on-off status of the electromagnetic pneumatic two-way stop valve.

[0005] To achieve the above-mentioned object, the present invention provides a synchronization test device for a two-way stop valve, which is used to test the on-off synchronization of the two-way stop valve. The two-way stop valve includes a pneumatic passage and a medium passage, the pneumatic passage includes a first air passage and a second air passage, the medium passage includes a first medium passage and a second medium passage, the first air passage is used to control the on-off of the first medium passage, and the second air passage is used to control the on-off of the second medium passage; the synchronization test device for the two-way stop valve includes:

[0006] a first body and a second body, wherein the first body and the second body are respectively provided at two ends of the two-way stop valve, and the first body and the second body are respectively connected to the input end and the output end of the two-way stop valve;

[0007] The first body includes a gas access passage and a liquid access passage; the gas access passage is divided in the first body and is used to connect the first gas and the second gas path respectively; the liquid access passage is divided in the first body and is used to connect the first medium path and the second medium path respectively;

[0008] The second main body includes a first medium throttle port and a second medium throttle port, the first medium throttle port is used to be connected to the outlet end of the first medium passage, the second medium throttle port is used to be connected to the outlet end of the second medium passage, the first medium throttle port is connected to a first pressure sensor, and the second medium throttle port is connected to a second pressure sensor.

[0009] As a further improvement of the present invention, the second main body is further provided with a first medium accommodating chamber and a second medium accommodating chamber, the first medium accommodating chamber is connected to the first medium throttle opening, and the second medium accommodating chamber is connected to the second medium throttle opening;

[0010] The sum of the inner volume of the first medium accommodating chamber and the inner volume of the first medium throttling port is equal to the volume of the first medium docking chamber;

[0011] The sum of the inner volume of the second medium accommodating chamber and the inner volume of the second medium throttling port is equal to the volume of the second medium docking container.

[0012] As a further improvement of the present invention, the sensing end of the first pressure sensor is vertically connected to the side wall of the first medium accommodating chamber;

[0013] The sensing end of the second pressure sensor is vertically connected to the side wall of the second medium accommodating cavity.

[0014] As a further improvement of the present invention, the first body and the second body are both provided with sealing gaskets at one end facing the two-way stop valve;

[0015] The first body and the second body are connected to the two-way stop valve via threads.

[0016] As a further improvement of the present invention, it also includes a measurement and control system, which includes at least a power supply, a Hall sensor, a signal collector and a controller;

[0017] The power supply is used to supply power to the two-way stop valve, the Hall sensor is used to collect the working current signal of the two-way stop valve, and the signal collector is used to collect and store the signal generated by the Hall sensor and the pressure signals of the first pressure sensor and the second pressure sensor; the controller is used to control the operation of the power supply, the Hall sensor and the signal collector, as well as to process control data and output test results.

[0018] As a further improvement of the present invention, the circulating medium in the liquid access passage is water.

[0019] As a further improvement of the present invention, the present application also includes a method for testing the synchronicity of a two-way stop valve, which comprises the following steps:

[0020] S1, power supply, dual-way stop valves work synchronously;

[0021] S2. Inputting set standard gas and liquid into the gas access passage and liquid access passage of the first body respectively;

[0022] S3. Obtain the time from power-on to the stabilization of the first pressure sensor and the second pressure sensor, and power off when the first pressure sensor and the second pressure sensor are stable, obtain the pressure relief time from power off to the pressure drop of the first pressure sensor and the second pressure sensor to the set value, and obtain the opening response time synchronization and closing response time synchronization of the first medium passage and the second medium passage of the two-way stop valve.

[0023] As a further improvement of the present invention, the acquisition of the opening response time synchronization of the first medium passage and the second medium passage of the two-way stop valve in step S3 specifically includes:

[0024] The opening response time of the first medium passage of the two-way shut-off valve is calculated from the time when the two-way shut-off valve is energized to the time when the pressure of the first pressure sensor is stabilized and cut off, and the opening response time of the second medium passage of the two-way shut-off valve is calculated from the time when the two-way shut-off valve is energized to the time when the pressure of the second pressure sensor is stabilized and cut off, and the opening response time synchronization of the first medium passage and the second medium passage is obtained as △tk= |tk2-tk1|.

[0025] As a further improvement of the present invention, the acquisition of the closing response time synchronization of the first medium passage and the second medium passage of the two-way stop valve in step S3 specifically includes:

[0026] When the pressures of the first pressure sensor and the second pressure sensor are stable, the two-way stop valve is powered off and begins to relieve pressure. The closing response time of the first medium passage of the two-way stop valve is calculated from the time when the two-way stop valve is powered off to the time when the pressure of the first pressure sensor drops to the set value and stops, and is obtained as tg1. The closing response time of the second medium passage of the two-way stop valve is calculated from the time when the two-way stop valve is powered off to the time when the pressure of the second pressure sensor drops to the set value and stops, and is obtained as tg2. The closing response time synchronization of the second medium passage and the second medium passage is obtained as △tg= |tg2-tg1|.

[0027] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0028] In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:

[0029] (1) The synchronization test device for a two-way stop valve of the present invention has a first body for simulating the input end of the two-way stop valve, and is used to input the gas medium and the liquid medium into the pneumatic passage and the medium passage of the two-way stop valve respectively; the second body is used to simulate the output end of the two-way stop valve, which is connected to the ends of the first medium passage and the second medium passage of the two-way stop valve, and is correspondingly provided with a first pressure sensor and a second pressure sensor, and senses the medium pressure at the ends of the two medium passages to evaluate the synchronization of the opening and closing of the two medium passages. The synchronization test device for a two-way stop valve in the present application can synchronously simulate the input and output conditions of the two-way stop valve to realize offline testing of the two-way stop valve and obtain the synchronous opening and closing conditions of the two medium passages of the two-way stop valve. It has a simple overall structure, is easy to test, and can accurately know the synchronous opening and closing conditions of the two-way stop valve.

[0030] (2) The synchronization test device of the two-way stop valve of the present invention, in order to simulate the synchronous ejection of the oxidant and the fuel during the actual operation of the two-way stop valve, the present application corresponds to setting a medium accommodating chamber and a medium throttling port on the second main body, the sum of the volumes of the two is exactly equal to the volume of the medium docking container, that is, the sum of the volumes of the accommodating chamber and the medium throttling port on the second main body is exactly equal to the volume of the medium receiving part of the engine connected to the two-way stop valve, so that the pressure sensed by the first sensor or the second sensor is equal to the amount of medium ejected when the two-way stop valve is working, thereby simulating the opening and closing synchronization of the oxidant path and the fuel path during the actual operation of the two-way stop valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 1 is a schematic diagram of the overall structure of a synchronization test device for a two-way stop valve according to an embodiment of the present invention;

[0032] Figure 2 2 is a schematic cross-sectional view of a synchronization testing device for a two-way stop valve according to an embodiment of the present invention;

[0033] Figure 3 1 is a flow chart of a method for testing the synchronicity of a two-way stop valve according to an embodiment of the present invention.

[0034] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0035] 1. First body; 2. Second body; 3. Two-way stop valve;

[0036] 101. Gas access passage; 102. Liquid access passage;

[0037] 201, first medium throttle; 202, second medium throttle; 203, first pressure sensor; 204, second pressure sensor; 205, first medium accommodating chamber; 206, second medium accommodating chamber. DETAILED DESCRIPTION

[0038] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0039] In the description of the present invention, it should be understood that, unless otherwise specified, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] Furthermore, unless otherwise specified, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specified.

[0041] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0043] Example:

[0044] See also Figures 1-3 The synchronization test device for a two-way shut-off valve in a preferred embodiment of the present invention is used to test the on-off synchronization of a two-way shut-off valve 3. The two-way shut-off valve 3 includes a pneumatic passage and a medium passage. The pneumatic passage is associated with the solenoid valve control of the two-way shut-off valve 3. When gas is injected into the pneumatic passage, the solenoid valve opens and closes accordingly, and the medium passage within the two-way shut-off valve 3 opens and closes accordingly, thereby controlling the flow path of the medium. The pneumatic passage includes a first gas passage and a second gas passage, and the medium passage includes a first medium passage and a second medium passage. The first gas passage is used to control the on-off of the first medium passage, and the second gas passage is used to control the on-off of the second medium passage.

[0045] With respect to the above-mentioned two-way stop valve 3, the synchronization test device of the two-way stop valve in the present application includes a first main body 1 and a second main body 2, which are respectively used to be arranged at the two ends of the two-way stop valve 3, and the first main body 1 and the second main body 2 are respectively connected to the input end and the output end of the two-way stop valve 3. Among them, the first main body 1 includes a gas access passage 101 and a liquid access passage 102. The gas access passage 101 is divided in the first main body 1 and is respectively used to connect the first gas path and the second gas path; the liquid access passage 102 is divided in the first main body 1 and is respectively used to connect the first medium path and the second medium path. Correspondingly, the second main body 2 includes a first medium throttle port 201 and a second shut-off throttle port. The first medium throttle port 201 is used to connect to the outlet end of the first medium path, and the second medium throttle port 202 is used to connect to the outlet end of the second medium path. The first medium throttle port 201 is connected to a first pressure sensor 203, and the second medium throttle port 202 is connected to a second pressure sensor 204.

[0046] Specifically, the synchronization test device of the two-way stop valve in the present application includes a first main body 1 and a second main body 2. The first main body 1 is used to simulate the input end of the two-way stop valve 3, and is used to input the gas medium and the liquid medium into the pneumatic passage and the medium passage of the two-way stop valve 3 respectively; the second main body 2 is used to simulate the output end of the two-way stop valve 3, which is connected to the ends of the first medium passage and the second medium passage of the two-way stop valve 3, and a first pressure sensor 203 and a second pressure sensor 204 are correspondingly set. By sensing the medium pressure at the ends of the two medium passages, the synchronization of the opening and closing of the two medium passages is evaluated. The synchronization test device of the two-way stop valve in the present application can synchronously simulate the input and output conditions of the two-way stop valve 3 to realize the offline test of the two-way stop valve 3 and obtain the synchronous opening and closing conditions of the two medium passages of the two-way stop valve 3. Its overall structure is simple, the test is convenient, and the synchronous on-off conditions of the two-way stop valve 3 can be accurately known.

[0047] Preferably, the two-way stop valve 3 in the present application is a flat electromagnetic pneumatic two-way stop valve 3. The working principle of the electromagnetic pneumatic two-way stop valve 3 is as follows: when the electromagnetic valve receives a control signal, the electromagnetic coil is energized to generate a magnetic field, the valve core moves, and the flow direction and on-off state of the gas are changed. The gas enters the cylinder of the pneumatic actuator through the air pipe, pushes the piston to move, and drives the valve stem and valve core to move, thereby opening or closing the valve. It is worth noting that the two-way stop valve 3 in the present application is an existing test structure, and its internal structural layout is not within the scope of protection of this application, and its internal structure will not be described in detail.

[0048] Furthermore, as a preferred embodiment of the present invention, the second main body 2 in the present application is also provided with a first medium accommodating chamber 205 and a second medium accommodating chamber 206, wherein the first medium accommodating chamber 205 is connected to the first medium throttle port 201, and the second medium accommodating chamber 206 is connected to the second medium throttle port 202, and the sum of the inner cavity volume of the first medium accommodating chamber 205 and the inner cavity volume of the first medium throttle port 201 is equal to the volume of the first medium docking chamber, and the sum of the inner cavity volume of the second medium accommodating chamber 206 and the inner cavity volume of the second medium throttle port 202 is equal to the volume of the second medium docking chamber. In order to simulate the synchronous spraying of oxidant and fuel by the two-way stop valve 3 during actual operation, the present application corresponds to setting a medium accommodating chamber and a medium throttling port on the second main body 2, and the sum of the volumes of the two is exactly equal to the volume of the medium docking container, that is, the sum of the volumes of the accommodating chamber and the medium throttling port on the second main body 2 is exactly equal to the volume of the medium receiving place at the engine connected to the two-way stop valve 3, so that the pressure sensed by the first sensor or the second sensor is equivalent to the amount of medium sprayed when the two-way stop valve 3 is working, thereby simulating the opening and closing synchronization of the oxidant path and the fuel path of the two-way stop valve 3 during actual operation.

[0049] Preferably, in the present application, the first medium accommodating chamber 205 and the second medium accommodating chamber 206 are respectively connected to the first medium passage and the second medium passage, and the size of the connection port of the first medium accommodating chamber 205 and the first medium passage is equal to the opening size of the engine receiving the oxidant, and the size of the connection port of the second medium accommodating chamber 206 and the second medium passage is equal to the opening size of the engine receiving the fuel. The same interface size enables the test device in the present application to fully simulate the actual working conditions of the two-way shut-off valve 3 to ensure that the pressure data tested by the first sensor and the second sensor are equal to the pressure at the port when the output end of the two-way shut-off valve 3 is actually working, so as to accurately evaluate the response time synchronization of the oxidant path and fuel path switches.

[0050] Furthermore, as an optional embodiment of the present invention, the sensing end of the first pressure sensor 203 in this application is vertically connected to the sidewall of the first medium accommodating chamber 205, and the sensing end of the second pressure sensor 204 is vertically connected to the sidewall of the second medium accommodating chamber 206. The arrangement of the first pressure sensor 203 and the second pressure sensor 204 ensures that the pressure data sensed by them is equivalent to the pressure at the medium output port of the two-way stop valve 3 during actual operation, thereby ensuring the accuracy of the test.

[0051] Furthermore, as an optional embodiment of the present invention, the first body 1 and the second body 2 in the present application are both provided with sealing gaskets at one end facing the two-way stop valve 3, and the first body 1 and the second body 2 are both connected to the two-way stop valve 3 by threads. The sealing gasket can ensure the airtightness of the connection between the first body 1, the second body 2 and the two-way stop valve 3, ensure that the gas medium and the liquid medium input from the first body 1 to the two-way stop valve 3 both flow into the two-way stop valve 3, ensure the accurate opening and closing of the two-way stop valve 3; and ensure that the liquid medium input from the two-way stop valve 3 both flows into the second body 2, so as to accurately evaluate the response time synchronization of the oxidant path and fuel path switches. The threaded connection is used to ensure the stability of the connection between the first body 1, the second body 2 and the two-way stop valve 3, and ensure that the test is carried out continuously and stably.

[0052] Furthermore, as an optional embodiment of the present invention, the synchronization test device of the two-way stop valve in the present application also includes a measurement and control system, which is used to control the operation and data acquisition of the synchronization test device of the two-way stop valve. Specifically, the measurement and control system includes a power supply, a Hall sensor, a signal collector, a controller and a display screen. Among them, the power supply is used to supply power to the two-way stop valve 3 to ensure the normal operation of the two-way stop valve 3; the Hall sensor is used to collect the working current signal of the two-way stop valve 3; the signal collector simultaneously collects and stores the signal generated by the Hall sensor, the pressure signal of the first pressure sensor 203 and the second pressure sensor 204, the controller is used to control the operation of the measurement and control system, and process the control data and output the test results. The display screen is used to visualize the test data. Optionally, the power supply here is a DC power supply and the display screen is a liquid crystal display.

[0053] Furthermore, as an optional embodiment of the present invention, the medium flowing through liquid access passage 102 in this application is water. To prevent oxidants and fuel from corroding the test device and affecting the test personnel during testing, this application replaces the medium with water and applies pressure to the water through an external drive mechanism to ensure that the water pressure is equal to the pressure of the medium during operation of two-way shut-off valve 3.

[0054] Furthermore, with respect to the above-mentioned synchronization testing device for the two-way stop valve, the present application also includes a synchronization testing method for the two-way stop valve 3, which comprises the following steps:

[0055] S1, power supply, dual-way stop valve 3 works synchronously;

[0056] S2. Inputting set standard gas and liquid into the gas access passage 101 and the liquid access passage 102 of the first body 1 respectively;

[0057] S3. Obtain the time from power-on to the stabilization of the first pressure sensor 203 and the second pressure sensor 204, and power off when the first pressure sensor 203 and the second pressure sensor are stable, obtain the pressure relief time from power off to the pressure drop of the first pressure sensor 203 and the second pressure sensor 204 to the set value, and obtain the opening response time synchronization and closing response time synchronization of the first medium passage and the second medium passage of the two-way stop valve 3.

[0058] Preferably, in the above step S3, obtaining the synchronization of the opening response times of the first medium passage and the second medium passage of the two-way stop valve 3 specifically includes:

[0059] The opening response time of the first medium passage of the two-way shut-off valve 3 is calculated from the start of power-on of the two-way shut-off valve 3 to the time when the pressure of the first pressure sensor 203 is stabilized and cut off, and the opening response time of the second medium passage of the two-way shut-off valve 3 is calculated from the start of power-on of the two-way shut-off valve 3 to the time when the pressure of the second pressure sensor 204 is stabilized and cut off, and the opening response time synchronization of the first medium passage and the second medium passage is obtained as △tk= |tk2- tk1|.

[0060] Preferably, in the above step S3, obtaining the synchronization of the closing response times of the first medium passage and the second medium passage of the two-way stop valve 3 specifically includes:

[0061] When the pressures at first pressure sensor 203 and second pressure sensor 204 stabilize, two-way shut-off valve 3 is de-energized, and pressure relief is initiated. The closing response time for the first medium passage of two-way shut-off valve 3 is calculated from the time it is de-energized until the pressure at first pressure sensor 203 drops to the set value, resulting in tg1. The closing response time for the second medium passage of two-way shut-off valve 3 is calculated from the time it is de-energized until the pressure at second pressure sensor 204 drops to the set value, resulting in tg2. The closing response time synchronization between the second and second medium passages is calculated as Δtg = |tg2 - tg1|. The power-on and power-off times of two-way shut-off valve 3 are both sensed by the Hall effect sensor. Specifically, the pressure setting values ​​at the first medium accommodating chamber 205 and the second medium accommodating chamber 206 sensed by the first pressure sensor 203 and the second pressure sensor 204 here usually fluctuate around the 0 line, that is, when the actual pressure in the first medium accommodating chamber 205 and the second medium accommodating chamber 206 is 0, but the pressure actually measured by the first pressure sensor 203 and the second pressure sensor 204 fluctuates around 0, so the actual readings of the two pressure sensors in the first medium accommodating chamber 205 and the second medium accommodating chamber 206 when the pressure is 0 can be preliminarily calibrated first, and used as the setting values ​​of the first pressure sensor 203 and the second pressure sensor 204.

[0062] It is worth noting that a certain deviation is usually set for the synchronization of the opening and closing response time of the two-way stop valve 3, that is, when △tk and △tg are both within the set standard threshold, the on-off synchronization response time of the two-way stop valve 3 meets the standard; conversely, when △tk and △tg are both greater than the standard set threshold, the on-off synchronization response time of the two-way stop valve 3 does not meet the standard.

[0063] It will be easily understood by those skilled in the art that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A two-way stop valve synchronization test device, used to test the on-off synchronization of the two-way stop valve, the two-way stop valve comprising a pneumatic passage and a medium passage, the pneumatic passage comprising a first air passage and a second air passage, the medium passage comprising a first medium passage and a second medium passage, the first air passage being used to control the on-off of the first medium passage, and the second air passage being used to control the on-off of the second medium passage; characterized in that: The synchronicity testing device of the two-way stop valve comprises: a first body and a second body, wherein the first body and the second body are respectively provided at two ends of the two-way stop valve, and the first body and the second body are respectively connected to the input end and the output end of the two-way stop valve; The first body includes a gas access passage and a liquid access passage; the gas access passage is divided in the first body and is used to connect the first gas path and the second gas path respectively; the liquid access passage is divided in the first body and is used to connect the first medium path and the second medium path respectively; The second body includes a first medium throttle opening and a second medium throttle opening, the first medium throttle opening is used to be connected to the outlet end of the first medium passage, and the second medium throttle opening is used to be connected to the outlet end of the second medium passage, the first medium throttle opening is connected to a first pressure sensor, and the second medium throttle opening is connected to a second pressure sensor; the second body is also provided with a first medium accommodating chamber and a second medium accommodating chamber, the first medium accommodating chamber is connected to the first medium throttle opening, and the second medium accommodating chamber is connected to the second medium throttle opening; The sum of the inner volume of the first medium accommodating chamber and the inner volume of the first medium throttling port is equal to the volume of the first medium docking chamber; The sum of the inner volume of the second medium accommodating chamber and the inner volume of the second medium throttling port is equal to the volume of the second medium docking chamber.

2. The synchronization testing device for a two-way stop valve according to claim 1, characterized in that: The sensing end of the first pressure sensor is vertically connected to the side wall of the first medium accommodating chamber; The sensing end of the second pressure sensor is vertically connected to the side wall of the second medium accommodating cavity.

3. The synchronization testing device of the two-way stop valve according to claim 1, characterized in that: The first body and the second body are both provided with sealing gaskets at one end facing the two-way stop valve; The first body and the second body are connected to the two-way stop valve via threads.

4. The synchronization testing device for a two-way stop valve according to claim 1, characterized in that: It also includes a measurement and control system, which includes at least a power supply, a Hall sensor, a signal collector and a controller; The power supply is used to supply power to the two-way stop valve; the Hall sensor is used to collect the working current signal of the two-way stop valve; the signal collector is used to collect and store the signal generated by the Hall sensor, the pressure signals of the first pressure sensor and the second pressure sensor; the controller is used to control the operation of the power supply, the Hall sensor and the signal collector, as well as process control data and output test results.

5. The synchronization testing device for a two-way stop valve according to claim 1, characterized in that: The circulating medium in the liquid access passage is water.

6. A method for testing the synchronicity of a two-way stop valve, characterized in that: The test is performed by the synchronization test device for the two-way stop valve according to any one of claims 1 to 5, comprising the following steps: S1, power supply, dual-way stop valves work synchronously; S2. Inputting set standard gas and liquid into the gas access passage and liquid access passage of the first body respectively; S3. Obtain the time from power-on to the stabilization of the first pressure sensor and the second pressure sensor, and power off when the first pressure sensor and the second pressure sensor are stable, obtain the pressure relief time from power off to the pressure drop of the first pressure sensor and the second pressure sensor to the set value, and obtain the opening response time synchronization and closing response time synchronization of the first medium passage and the second medium passage of the two-way stop valve.

7. The method for testing the synchronicity of a two-way stop valve according to claim 6, characterized in that: The acquisition of the opening response time synchronization of the first medium passage and the second medium passage of the two-way stop valve in step S3 specifically includes: The opening response time of the first medium passage of the two-way shut-off valve is calculated from the time when the two-way shut-off valve is energized to the time when the pressure of the first pressure sensor is stabilized and cut off, and the opening response time of the second medium passage of the two-way shut-off valve is calculated from the time when the two-way shut-off valve is energized to the time when the pressure of the second pressure sensor is stabilized and cut off, and the opening response time synchronization of the first medium passage and the second medium passage is obtained as △tk= |tk2-tk1|.

8. The method for testing the synchronicity of a two-way stop valve according to claim 6, characterized in that: The acquisition of the closing response time synchronization of the first medium passage and the second medium passage of the two-way stop valve in step S3 specifically includes: When the pressures of the first pressure sensor and the second pressure sensor are stable, the two-way stop valve is powered off and begins to relieve pressure. The closing response time of the first medium passage of the two-way stop valve is calculated from the time when the two-way stop valve is powered off to the time when the pressure of the first pressure sensor drops to the set value and stops, and is obtained as tg1. The closing response time of the second medium passage of the two-way stop valve is calculated from the time when the two-way stop valve is powered off to the time when the pressure of the second pressure sensor drops to the set value and stops, and is obtained as tg2. The closing response time synchronization of the second medium passage and the second medium passage is obtained as △tg= |tg2-tg1|.

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