Testing device and testing method for adding and discharging valve

Abstract

The invention discloses a testing device and a testing method for a charging and discharging valve, and relates to the technical field of liquid rocket charging and discharging valve detection.The testing device for the charging and discharging valve comprises a jacking tool, the charging and discharging valve needing to be tested, a loop, a tool base, an air inlet connecting pipe nozzle, an air outlet connecting pipe nozzle and a controller; the ejection tool comprises a bearing fixing seat, an ejection tool base, a first stand column, an upper fixing cover, a second stand column, an ejection rod and a shaft rod. The ejector rod comprises an ejector rod platform, a first ejector rod stand column, a second ejector rod stand column and a threaded sliding block. The problems that when a detection device is used for detecting the adding and discharging valve, under the air tightness condition, ejection checking of a valve element of the valve cannot be conducted, the ejection acting force cannot be accurately quantified, air tightness checking cannot be conducted on an irregular valve connector, and parts of the detection device in the valve cannot be simplified so that redundant objects cannot enter the valve can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of liquid rocket charging and discharging valve detection, and in particular to a testing device and a testing method for charging and discharging valves. Background Art

[0002] The charging and discharging valve is an important component for liquid launch vehicle to add and / or discharge propellant into the tank. It is usually installed at the bottom of the tank of liquid launch vehicle to control the opening and closing during the process of liquid propellant filling, ensuring the normal flow of tank propellant during the charging and discharging process and the sealing of the propellant after the charging and discharging is completed. The valve air tightness of the charging and discharging valve under the top opening pressure and flow pressure change is particularly important for the use of the valve and the flight mission of liquid rockets.

[0003] When the detection device is used to detect the filling and relief valve, the main issues faced are how to conduct the top-opening inspection of the valve core under air tightness, how to quantify the top-opening force, how to conduct air tightness inspection on irregular valve interfaces, and how to simplify the parts of the detection device inside the valve to avoid the entry of unnecessary objects.

[0004] In the utility model patent with the authorization announcement number CN 201034791Y and the invention name of the universal valve inspection device, although the valve air tightness inspection can be carried out, there is no quantitative test method for the movement inspection of the valve core under pressure air tightness and the force of the valve core opening, and the lead screw and the upper plate cannot be disassembled and replaced, resulting in increased maintenance costs and poor practicality. In the utility model patent with the publication number CN 209470817U and the invention name of a special tooling for ultra-low temperature valve testing, although the multi-seal groove design can be applied to the low-temperature sealing test of most valves, it is only effective for the force applied by a single propulsion shaft. At low temperatures, the valve housing shrinks, which will inevitably increase the risk of valve leakage and reduce versatility.

[0005] Therefore, it is urgent to propose an integrated design of a top-opening tooling and a sealing device for use in a liquid rocket charging and discharging valve testing method, so as to realize multi-working condition testing of the charging and discharging valve before leaving the factory. Summary of the invention

[0006] The purpose of the present application is to provide a testing device and a testing method for a charging and discharging valve, which can solve the problems encountered when using a detection device to detect the charging and discharging valve, such as the inability to perform a top-opening check on the valve core under airtightness, the inability to accurately quantify the top-opening force, the inability to perform an airtightness check on irregular valve interfaces, and the inability to simplify the detection device components in the valve to avoid the entry of excess objects.

[0007] To achieve the above-mentioned purpose, the present application provides a testing device for a charging and discharging valve, comprising: a top-opening tooling, a charging and discharging valve to be tested, a loop, a tooling base, an air inlet nozzle, an air outlet nozzle and a controller; wherein the top-opening tooling comprises: a bearing fixing seat, a top-opening tooling base, a first column, an upper fixing cover, a second column, a push rod and a shaft rod; the bearing fixing seat is arranged at the upper end of the top-opening tooling base; one end of the first column is connected to the upper end of the top-opening tooling base and is located on one side of the bearing fixing seat; the other end of the first column is detachably connected to one end of the upper fixing cover; one end of the second column is connected to the upper end of the top-opening tooling base and is located on the other side of the bearing fixing seat; the other end of the second column is detachably connected to the other end of the upper fixing cover; the top-opening tooling base A first push rod sealing hole and a second push rod sealing hole are also provided on it; the first push rod sealing hole is located between the first column and the bearing fixing seat, and a first sealing ring is arranged in the first push rod sealing hole; the second push rod sealing hole is located between the second column and the bearing fixing seat, and a second sealing ring is arranged in the second push rod sealing hole; the push rod comprises: a push rod platform, a first push rod column, a second push rod column and a threaded slider; the threaded slider is provided with a threaded hole, a first sensor connecting hole and a second sensor connecting hole, and the first sensor connecting hole and the second sensor connecting hole are respectively located on both sides of the threaded hole; one end of the first push rod column is connected to the upper end of the push rod platform, and the other end of the first push rod column passes through the first push rod sealing hole from the lower end of the top opening tooling base, and is located at the lower end of the threaded slider. , and is aligned with the first sensor connection hole; the first sensor passes through the first sensor connection hole from the upper end of the threaded slider and is detachably connected to the other end of the first push rod column; one end of the second push rod column is connected to the upper end of the push rod platform, and the other end of the second push rod column passes through the second push rod sealing hole from the lower end of the top opening tooling base, and is located at the lower end of the threaded slider, and is aligned with the second sensor connection hole, the second sensor passes through the second sensor connection hole from the upper end of the threaded slider and is detachably connected to the other end of the second push rod column; after connection, the threaded slider is located between the upper fixed cover and the top opening tooling base, the push rod platform is located between the top opening tooling base and the valve core of the filling and discharge valve, and the lower end of the push rod platform is aligned with the valve core of the filling and discharge valve; one end of the shaft is rotatably connected to the bearing fixing seat The other end of the shaft rod passes through the threaded hole of the threaded slider and the upper fixed cover in sequence, and the rotation of the shaft rod drives the threaded slider to move downward or upward along the shaft rod, thereby driving the lower end of the push rod platform to approach the valve core of the charging and discharging valve or away from the valve core of the charging and discharging valve; the upper end of the charging and discharging valve is detachably connected to the top opening tooling base through a slip sleeve, and a third sealing ring is arranged between the upper end of the charging and discharging valve and the lower end of the top opening tooling base; the lower end of the charging and discharging valve is detachably connected to the upper end of the tooling base, and a fourth sealing ring is arranged between the lower end of the charging and discharging valve and the upper end of the tooling base; one end of the air inlet nozzle is arranged on the top opening tooling base and is connected to the charging and discharging valve; one end of the air outlet nozzle is arranged on the tooling base and is connected to the charging and discharging valve; the controller is connected to the first sensor and the second sensor.

[0008] As above, the opening tool also includes a hand wheel, which is connected to the other end of the shaft.

[0009] As above, a plurality of top opening tooling mounting holes are arranged on the top opening tooling base, and the plurality of top opening tooling mounting holes are evenly spaced in a circle with the center of the top opening tooling base as the center; the upper end of the filling and discharge valve is connected to the plurality of top opening tooling mounting holes through a slip-on.

[0010] As above, wherein the looper comprises: a first C-type looper and a second C-type looper; wherein the first C-type looper comprises: a first C-type main body, one end of the first C-type main body is provided with a first upper looper tenon groove surface, and the other end of the first C-type main body is provided with a first lower looper tenon groove surface; the first C-type main body is also provided with a plurality of first looper bolt holes, the first upper looper tenon groove surface is provided with at least one first upper looper bolt hole, and the first lower looper tenon groove surface is provided with at least one first lower looper bolt hole; the second C-type looper comprises: a second C-type main body, one end of the second C-type main body is provided with a second upper looper tenon groove surface, and the other end of the second C-type main body is provided with a second lower looper tenon groove surface; the second C-type main body is also provided with a plurality of second looper bolt holes, the second upper looper tenon groove surface is provided with at least one second upper looper bolt hole, and the second lower looper tenon groove surface is provided with at least one second two lower slip-on bolt holes; when connected, the first upper slip-on tenon groove surface and the second lower slip-on tenon groove surface cooperate with each other, and the first upper slip-on bolt hole and the second lower slip-on bolt hole correspond one-to-one to form a third slip-on bolt hole; the first lower slip-on tenon groove surface and the second upper slip-on tenon groove surface cooperate with each other, and the first lower slip-on bolt hole and the second upper slip-on bolt hole correspond one-to-one to form a fourth slip-on bolt hole; multiple filling valve upper fasteners located at the upper end of the filling valve correspond one-to-one to the first slip-on bolt hole, the second slip-on bolt hole, the third slip-on bolt hole and the fourth slip-on bolt hole; multiple filling valve upper fasteners located at the upper end of the filling valve correspond one-to-one to multiple top-opening tooling installation holes; each filling valve upper fastener passes through the corresponding first slip-on bolt hole, the second slip-on bolt hole, the third slip-on bolt hole or the fourth slip-on bolt hole, and then passes through the corresponding top-opening tooling installation hole, thereby completing the fixed connection.

[0011] As above, wherein a fifth sealing ring is arranged in each first loose-loop bolt hole; a sixth sealing ring is arranged in each first upper loose-loop bolt hole; a seventh sealing ring is arranged in each first lower loose-loop bolt hole; an eighth sealing ring is arranged in each second loose-loop bolt hole; a ninth sealing ring is arranged in each second upper loose-loop bolt hole; and a tenth sealing ring is arranged in each second lower loose-loop bolt hole.

[0012] As above, a first constraint boss slide is provided on the side of the first column close to the bearing fixing seat; a second constraint boss slide is provided on the side of the second column close to the bearing fixing seat; one end of the threaded slider close to the first sensor connecting hole is located in the first constraint boss slide, and one end of the threaded slider close to the second sensor connecting hole is located in the second constraint boss slide.

[0013] As above, wherein the threaded slider includes: a slider body, a first constraint boss and a second constraint boss; the threaded hole, the first sensor connection hole and the second sensor connection hole are all arranged on the slider body, and the threaded hole is located in the middle of the slider body, and the first sensor connection hole and the second sensor connection hole are respectively located on both sides of the threaded hole; one end of the first constraint boss is arranged at one end of the slider body close to the first sensor connection hole, and the other end of the first constraint boss is located in the first constraint boss slide; one end of the second constraint boss is arranged at one end of the slider body close to the second sensor connection hole, and the other end of the second constraint boss is located in the second constraint boss slide.

[0014] As above, the top opening tool also includes a ruler, and the ruler is arranged on the first column and / or the second column.

[0015] As above, the tooling base includes: a connecting column, an upper tooling base and a lower tooling base; wherein the upper end of the connecting column is connected to the lower end of the upper tooling base, and the lower end of the connecting column is connected to the upper end of the lower tooling base; a tooling base sealing groove is provided at the upper end of the upper tooling base, and a fourth sealing ring is provided in the tooling base sealing groove; a plurality of upper base mounting holes are also provided on the upper tooling base, and the lower end of the filling and discharge valve is connected to the plurality of upper base mounting holes; a plurality of ground fastening holes are provided on the lower tooling base, and the ground fastening holes are connected to the placement surface.

[0016] The present application also provides a testing method for a charging and discharging valve, which is applied to the above-mentioned testing device for a charging and discharging valve, and the testing method includes the following steps: S1: installing the charging and discharging valve to be tested, placing the fourth sealing ring in the sealing groove of the tooling base at the upper end of the tooling base, placing the lower end of the charging and discharging valve at the upper end of the tooling base, passing the multiple charging valve lower fasteners located at the lower end of the charging valve through the multiple charging and discharging valve bottom mounting holes and the multiple upper base mounting holes of the tooling base one by one, and fixing them; placing the third sealing ring in the sealing groove of the top-opening tooling, placing the top-opening tooling at the upper end of the charging and discharging valve, fitting the top rod with the valve core of the charging and discharging valve, and tightening the multiple charging valve upper fasteners one by one. Pass through the multiple mounting holes of the loop and the top-opening tooling, and fix; S2: perform a forward airtightness check on the valve. When the top-opening tooling is not in action, an external air source inputs test gas through the air inlet nozzle. The upper sealing surface of the filling valve, the lower sealing surface of the filling valve, the valve body of the filling valve and the air outlet nozzle are checked for airtightness by using a test gas inspection instrument to obtain the forward test gas leakage amount, and obtain the forward airtightness check result based on the forward test gas leakage amount, wherein, if the forward test gas leakage amount is greater than the first leakage amount threshold, the forward airtightness check result is leakage; if the forward test gas leakage amount is less than or equal to the first leakage amount threshold, the forward airtightness check result is no leakage, Execute S3; S3: perform a reverse airtightness check on the valve. When the top-opening tooling does not move, an external air source inputs test gas through the air outlet nozzle. The upper sealing surface of the filling valve, the lower sealing surface of the filling valve, the valve body of the filling valve and the air inlet nozzle are checked for airtightness by using a test gas inspection instrument to obtain the reverse test gas leakage amount, and the reverse airtightness inspection result is obtained based on the reverse test gas leakage amount. Among them, if the reverse test gas leakage amount is greater than the second leakage amount threshold, the reverse airtightness inspection result is leakage; if the reverse test gas leakage amount is less than or equal to the second leakage amount threshold, the reverse airtightness inspection result is no leakage, and execute S4; S4: perform a valve core activity test. When not Under the condition of inputting the test gas, turn the hand wheel, and the hand wheel will drive the push rod of the push-opening tooling to extend toward the valve core. The controller collects the force of the push rod on the valve core through the first sensor and the second sensor, detects the movement of the valve core, and records the maximum stroke of the valve core; S5: Inspection of reverse pressure opening detection, input the test gas from the external air source through the air outlet nozzle, turn the hand wheel, and the push rod extends from the push-opening tooling. When the push rod platform on the push rod contacts the valve core of the filling and relief valve, the controller collects the force of the push rod on the valve core through the first sensor and the second sensor until the inlet and outlet pressures of the valve are balanced, and records the displacement distance of the threaded slider to detect the opening effect under reverse pressure.

[0017] The beneficial effects achieved by this application are as follows:

[0018] (1) The testing device and testing method for the filling and discharge valve of the present application can realize the opening and closing action of the valve during the sealing inspection process through the retractable push rod design, and improve the sensitivity of the push-open inspection action.

[0019] (2) The testing device and method for the charging and discharging valve of the present application can quantify the movement stroke and force of the valve core of the charging and discharging valve by using the pressure values ​​of the push rod collected by the first sensor and the second sensor, and the specific scale value of the threaded slider moving to the scale, thereby improving the quantitative accuracy of measuring the force and stroke displacement of the valve core of the charging and discharging valve during the opening action.

[0020] (3) The testing device and testing method for the filling and discharge valve of the present application propose a C-type slipcover with a mortise and tenon surface, which is composed of two C-type slipcover mortise and tenon joints to form a whole annular slipcover, which can be applied to the valve end face without installation bolt holes to ensure its sealing effect, thereby solving the sealing problem of the valve flange end face without installation holes.

[0021] (4) The testing device and testing method for the charging and discharging valve of the present application integrate the detection modes such as air tightness, valve core opening movement and reverse pressure-bearing opening into the same device, achieving a short-time and efficient detection effect, improving the quality of the finished charging and discharging valve, and enhancing the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 A structural schematic diagram of an embodiment of a testing device for a charging and discharging valve;

[0024] Figure 2 An exploded view of an embodiment of a testing device for a charging and discharging valve;

[0025] Figure 3 A cross-sectional view of an embodiment of a testing device for a charging and discharging valve;

[0026] Figure 4 It is a structural schematic diagram of an embodiment of a top-opening tool;

[0027] Figure 5 A schematic structural diagram of an embodiment of a push rod;

[0028] Figure 6 It is a structural schematic diagram of an embodiment of a threaded slider;

[0029] Figure 7 A flow chart of an embodiment of a testing method for a filling and draining valve. DETAILED DESCRIPTION

[0030] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0031] like Figure 1-6As shown, the present application provides a testing device for a charging and discharging valve, comprising: a top-opening tool 1, a charging and discharging valve 2 to be tested, a looper 3, a tool base 4, an air inlet pipe nozzle 5, an air outlet pipe nozzle 6 and a controller 7. Among them, the top-opening tool 1 comprises: a bearing fixing seat 11, a top-opening tool base 12, a first column 13, an upper fixing cover 14, a second column 15, a push rod 16 and a shaft 17. The bearing fixing seat 11 is arranged at the upper end of the top-opening tool base 12. One end of the first column 13 is connected to the upper end of the top-opening tool base 12 and is located on one side of the bearing fixing seat 11; the other end of the first column 13 is detachably connected to one end of the upper fixing cover 14; one end of the second column 15 is connected to the upper end of the top-opening tool base 12 and is located on the other side of the bearing fixing seat 11; the other end of the second column 15 is detachably connected to the other end of the upper fixing cover 14. A first push rod sealing hole 121 and a second push rod sealing hole 122 are also provided on the push opening tooling base 12; the first push rod sealing hole 121 is located between the first column 13 and the bearing fixing seat 11, and a first sealing ring is provided in the first push rod sealing hole 121; the second push rod sealing hole 122 is located between the second column 15 and the bearing fixing seat 11, and a second sealing ring is provided in the second push rod sealing hole 122. The push rod 16 includes: a push rod platform 161, a first push rod column 162, a second push rod column 163 and a threaded slider 164; the threaded slider 164 is provided with a threaded hole 1641, a first sensor connection hole 1642 and a second sensor connection hole 1643, and the first sensor connection hole 1642 and the second sensor connection hole 1643 are respectively located on both sides of the threaded hole 1641; one end of the first push rod column 162 is connected to the upper end of the push rod platform 161, and the other end of the first push rod column 162 passes through the first push rod sealing hole 121 from the lower end of the top opening tooling base 12, and is located at the lower end of the threaded slider 164, and is aligned with the first sensor connection hole 1641; the first sensor 165 passes through the first sensor connection hole 164 from the upper end of the threaded slider 164 1 is detachably connected to the other end of the first mandrel column 162; one end of the second mandrel column 163 is connected to the upper end of the mandrel platform 161, the other end of the second mandrel column 163 passes through the second mandrel sealing hole 122 from the lower end of the top opening tooling base 12, and is located at the lower end of the threaded slider 164, and is aligned with the second sensor connecting hole 1643, the second sensor 166 passes through the second sensor connecting hole 1643 from the upper end of the threaded slider 164 and is detachably connected to the other end of the second mandrel column 163; after the connection, the threaded slider 164 is located between the upper fixed cover 14 and the top opening tooling base 12, the mandrel platform 161 is located between the top opening tooling base 12 and the valve core 21 of the charging and discharging valve 2, and the lower end of the mandrel platform 161 is aligned with the valve core 21 of the charging and discharging valve 2.One end of the shaft 17 is rotatably connected to the bearing fixing seat 11, and the other end of the shaft 17 passes through the threaded hole 1641 of the threaded slider 164 and the upper fixing cover 14 in sequence, and the rotation of the shaft 17 drives the threaded slider 164 to move downward or upward along the shaft 17, thereby driving the lower end of the top rod platform 161 to approach the valve core 21 of the filling and discharge valve 2 or to move away from the valve core 21 of the filling and discharge valve 2. The upper end of the filling and discharge valve 2 is detachably connected to the top opening tooling base 12 through the loop 3, and a third sealing ring 123 is provided between the upper end of the filling and discharge valve 2 and the lower end of the top opening tooling base 12; the lower end of the filling and discharge valve 2 is detachably connected to the upper end of the tooling base 4, and a fourth sealing ring is provided between the lower end of the filling and discharge valve 2 and the upper end of the tooling base 4. One end of the intake pipe nozzle 5 is provided on the top opening tooling base 12 and is connected to the filling and discharge valve 2. One end of the gas outlet nozzle 6 is disposed on the tooling base 4 and is communicated with the filling and discharge valve 2. The controller 7 is connected to the first sensor 165 and the second sensor 166.

[0032] Specifically, the test device for the charging and discharging valve of the present application uses the top-opening tool 1 to push open the valve core 21 of the charging and discharging valve 2. The top-opening tool 1 is provided with a push rod 16. The push rod 16 can convert the circular motion into a linear motion through the force transmission of the shaft 17 and the threaded slider 164, thereby realizing the top-opening effect or the closing effect of the charging and discharging valve 2, which can solve the problem that the valve cannot be opened for inspection while ensuring air tightness during the sealing inspection of the charging and discharging valve 2. The test device for the charging and discharging valve of the present application is an integrated design of the top-opening tool and the sealing device, which is suitable for the liquid rocket charging and discharging valve test method and can realize the multi-operating condition detection of the charging and discharging valve before leaving the factory.

[0033] Further, such as Figure 3 As shown, a sealing groove 1231 for the push-opening tool is formed at the lower end of the push-opening tool base 12, and a third sealing ring 123 is disposed in the sealing groove 1231 for the push-opening tool to improve the sealing performance during the push-opening process.

[0034] Furthermore, the upper fixed cover 14 is connected to the shaft 17 via a bearing 141, but is not limited to a bearing connection. The present application prefers a bearing connection.

[0035] Furthermore, a plurality of fixing cover bolt holes 142 are provided at both ends of the upper fixing cover 14 , and the upper fixing cover 14 is connected to the first column 13 and the second column 15 through the plurality of fixing cover bolt holes 142 .

[0036] Specifically, the specific number of the fixing cover bolt holes 142 is set according to actual conditions. In the present application, four fixing cover bolt holes 142 are preferably set at both ends of the upper fixing cover 14 .

[0037] Furthermore, a plurality of first column bolt holes 132 are provided at the upper end of the first column 13, and a plurality of second column bolt holes 152 are provided at the upper end of the second column 15. The fixing cover bolt holes 142 and the first column bolt holes 132 or the second column bolt holes 152 are connected by hexagon socket bolts 143, but are not limited to hexagon socket bolts 143. The present application preferably uses hexagon socket bolts 143.

[0038] Specifically, the specific number of the first column bolt holes 132 and the second column bolt holes 152 is determined according to actual conditions. In the present application, it is preferred that the number of the first column bolt holes 132 is four and the number of the second column bolt holes 152 is four.

[0039] Further, the first column 13 and the top opening tool base 12 are welded, but not limited to welding, and the present application preferably uses welding. The second column 15 and the top opening tool base 12 are welded, but not limited to welding, and the present application preferably uses welding.

[0040] Furthermore, at least one sealing groove is provided in the first push rod sealing hole 121 .

[0041] Furthermore, the specific number of sealing grooves provided in the first push rod sealing hole 121 is set according to actual conditions, and the present application preferably has two sealing grooves, that is, a double-channel sealing groove is provided in the first push rod sealing hole 121 .

[0042] Furthermore, at least one sealing groove is provided in the second push rod sealing hole 122 .

[0043] Furthermore, the specific number of sealing grooves provided in the second push rod sealing hole 122 is set according to actual conditions, and the present application preferably has two sealing grooves, that is, a double-channel sealing groove is provided in the second push rod sealing hole 122 .

[0044] Furthermore, the first sealing ring provided in the first push rod sealing hole 121 is an O-ring, but is not limited to an O-ring. The present application preferably uses an O-ring.

[0045] Furthermore, the specific number of first sealing rings provided in the first push rod sealing hole 121 is set according to actual conditions, and the present application preferably has two first sealing rings, with one first sealing ring being provided in one sealing groove of the first push rod sealing hole 121 .

[0046] Furthermore, the second sealing ring provided in the second push rod sealing hole 122 is an O-ring, but is not limited to an O-ring. The present application preferably uses an O-ring.

[0047] Furthermore, the specific number of the second sealing rings provided in the second push rod sealing hole 122 is set according to actual conditions, and the present application preferably has two, and a second sealing ring is provided in a sealing groove of the second push rod sealing hole 122 .

[0048] Specifically, when the activity of the valve core 21 of the filling and discharge valve 2 is checked under high-pressure air-tightness detection, the dynamic sealing effect of the push rod 16 can be achieved through the first sealing ring and the second sealing ring, thereby solving the problem of valve opening under high-pressure air-tightness detection.

[0049] Furthermore, one end of the first mandrel column 162 is welded to the upper end of the mandrel platform 161, but is not limited to welding. Welding is preferred in the present application.

[0050] Furthermore, one end of the second mandrel column 163 is welded to the upper end of the mandrel platform 161, but is not limited to welding. Welding is preferred in the present application.

[0051] Furthermore, the first mandrel column 162 and the second mandrel column 163 are symmetrically arranged on the mandrel platform 161 .

[0052] Further, such as Figure 5 As shown, the other end of the first push rod column 162 is provided with a first sensor mounting seat 1621; the other end of the first push rod column 162 passes through the first push rod sealing hole 121 from the lower end of the top opening tooling base 12, and is located at the lower end of the threaded slider 164, and the first sensor mounting seat 1621 is aligned with the first sensor connecting hole 1641; the first sensor 165 passes through the first sensor connecting hole 1641 from the upper end of the threaded slider 164 and is connected to the first sensor mounting seat 1621.

[0053] Furthermore, a second sensor mounting seat 1631 is provided at the other end of the second push rod column 163; the other end of the second push rod column 163 passes through the second push rod sealing hole 122 from the lower end of the top opening tooling base 12, and is located at the lower end of the threaded slider 164, and the second sensor mounting seat 1631 is aligned with the second sensor connecting hole 1643, and the second sensor 166 passes through the second sensor connecting hole 1643 from the upper end of the threaded slider 164 and is connected to the second sensor mounting seat 1631.

[0054] Further, such as Figure 4 As shown, the bearing fixing seat 11 includes: a fixed horizontal plate 111, a first fixed vertical plate 112 and a second fixed vertical plate 113; one end of the fixed horizontal plate 111 is connected to one end of the first fixed vertical plate 112, and the other end of the first fixed vertical plate 112 is connected to the upper end of the top-opening tooling base 12; the other end of the fixed horizontal plate 111 is connected to one end of the second fixed vertical plate 113, and the other end of the second fixed vertical plate 113 is connected to the upper end of the top-opening tooling base 12; a bearing fixing hole 1111 is provided on the fixed horizontal plate 111; one end of the shaft 17 is rotatably connected to the bearing fixing hole 1111.

[0055] Specifically, the bearing fixing seat 11 can be an integrated structure or a split structure. The present application prefers an integrated structure, and the bearing fixing seat 11 is C-shaped.

[0056] Further, the other end of the first fixed vertical plate 112 is welded to the upper end of the top opening tool base 12, but not limited to welding, and the present application preferably uses welding. The other end of the second fixed vertical plate 113 is welded to the upper end of the top opening tool base 12, but not limited to welding, and the present application preferably uses welding.

[0057] Furthermore, one end of the shaft rod 17 passes through the gasket 114 and the bearing fixing hole 1111 in sequence, and is connected to the bearing fastening nut 115 .

[0058] Further, such as Figure 1-3 As shown, the ejection tool 1 further includes a hand wheel 18 , and the hand wheel 18 is connected to the other end of the shaft 17 .

[0059] Specifically, the hand wheel 18 is used to facilitate application of the force.

[0060] Furthermore, the top opening tool base 12 is provided with a plurality of top opening tool installation holes 124, which are evenly spaced around the center of the top opening tool base 12. The upper end of the filling and discharge valve 2 is connected to the plurality of top opening tool installation holes 124 through a loop 3.

[0061] Furthermore, a plurality of mounting hole protrusions 125 are provided on the four sides of the top opening tool base 12 , and a plurality of top opening tool mounting holes 124 are provided on the mounting hole protrusions 125 .

[0062] Specifically, the top opening tool base 12 can be an integrated structure or a split structure, and the present application prefers an integrated structure. After a plurality of mounting hole protrusions 125 are arranged around the top opening tool base 12, the top opening tool base 12 presents a rectangular gear shape, and a mounting hole protrusion 125 is concentrically designed on the top of each gear (i.e., mounting hole protrusion 125), and the plurality of mounting hole protrusions 125 are evenly distributed in the axial direction.

[0063] Further, such as Figure 1-3As shown, the looper 3 includes: a first C-shaped looper 31 and a second C-shaped looper 32. The first C-shaped looper 31 includes: a first C-shaped body 311, one end of the first C-shaped body 311 is provided with a first upper looper tenon groove surface 312, and the other end of the first C-shaped body 311 is provided with a first lower looper tenon groove surface 313; the first C-shaped body 311 is also provided with a plurality of first looper bolt holes 3111, the first upper looper tenon groove surface 312 is provided with at least one first upper looper bolt hole 3121, and the first lower looper tenon groove surface 313 is provided with at least one first lower looper bolt hole 3131. The second C-shaped looper 32 includes: a second C-shaped body 321, one end of the second C-shaped body 321 is provided with a second upper looper mortise surface 322, and the other end of the second C-shaped body 321 is provided with a second lower looper mortise surface 323; the second C-shaped body 321 is also provided with a plurality of second looper bolt holes 3211, the second upper looper mortise surface 322 is provided with at least one second upper looper bolt hole 3221, and the second lower looper mortise surface 323 is provided with at least one second lower looper bolt hole 3231. When connected, the first upper looper mortise surface 312 and the second lower looper mortise surface 323 cooperate with each other, and the first upper looper bolt hole 3121 corresponds to the second lower looper bolt hole 3231 one by one, forming a third looper bolt hole. The first lower mortise and tenon surface 313 and the second upper mortise and tenon surface 322 cooperate with each other, and the first lower mortise bolt hole 3131 and the second upper mortise bolt hole 3221 correspond one-to-one to form a fourth mortise bolt hole. The multiple filling valve upper fasteners 22 located at the upper end of the filling valve 2 correspond one-to-one to the first mortise bolt hole 3111, the second mortise bolt hole 3211, the third mortise bolt hole and the fourth mortise bolt hole; the multiple filling valve upper fasteners 22 located at the upper end of the filling valve 2 correspond one-to-one to the multiple top-opening tooling installation holes 124. After each filling valve upper fastener 22 passes through the corresponding first mortise bolt hole 3111, the second mortise bolt hole 3211, the third mortise bolt hole or the fourth mortise bolt hole, it passes through the corresponding top-opening tooling installation hole 124, thereby completing the fixed connection.

[0064] Specifically, the push rod platform 161 and the threaded slider 164 of the push rod 16 of the present application are designed as separate parts, and the force transmission mechanism of the push-open tooling 1 is designed on the outside of the push-open tooling base 12. The threaded slider 164 and the push rod 16 are arranged on the outside of the push-open tooling base 12 through the fastener 22 on the filling and discharge valve. In the inlet cavity of the filling and discharge valve 2, only the push rod platform 161 of the push rod 16 is in contact with it, which can prevent the fastener 22 on the filling and discharge valve and excess grease and other excess materials from entering the cavity of the filling and discharge valve 2, interfering with the inspection, and causing excess materials to remain in the valve. The present application also proposes a C-type loop, which is used to clamp the upper end of the filling and discharge valve 2. When in use, the mortise and tenon grooves of the first C-type loop 31 and the second C-type loop 32 are used in conjunction to form a loop that is annular. The fastener 22 on the charging and discharging valve can pass through the first loop bolt hole 3111, the second loop bolt hole 3211, the third loop bolt hole or the fourth loop bolt hole, and the top-opening tooling mounting hole 124, so as to fix the top-opening tooling base 12 to one side of the charging and discharging valve 2 and improve the sealing performance, thereby solving the problem that the end face of the charging and discharging valve 2 without the mounting hole cannot be sealed during the sealing inspection of the charging and discharging valve.

[0065] Furthermore, a fifth sealing ring 314 is disposed in each first loose-loop bolt hole 3111 .

[0066] Furthermore, a sixth sealing ring is disposed in each first upper loose-fitting bolt hole 3121 .

[0067] Furthermore, a seventh sealing ring is disposed in each first lower loose-fitting bolt hole 3131 .

[0068] Furthermore, an eighth sealing ring is disposed in each second loose-loop bolt hole 3211 .

[0069] Furthermore, a ninth sealing ring is disposed in each second upper loose-fitting bolt hole 3221 .

[0070] Furthermore, a tenth sealing ring is disposed in each second lower slip-on bolt hole 3231 .

[0071] Further, such as Figure 1-4 As shown, a first constraint boss slideway 131 is provided on one side of the first column 13 close to the bearing fixing seat 11. A second constraint boss slideway 151 is provided on one side of the second column 15 close to the bearing fixing seat 11. One end of the threaded slider 164 close to the first sensor connection hole 1642 is located in the first constraint boss slideway 131, and one end of the threaded slider 164 close to the second sensor connection hole 1643 is located in the second constraint boss slideway 151.

[0072] Specifically, after the first constraint boss slideway 131 is provided on the first column 13, the first column 13 is in a C-shape. After the second constraint boss slideway 151 is provided on the second column 15, the second column 15 is in a C-shape.

[0073] Furthermore, the threaded slider 164 includes: a slider body 1644, a first constraint boss 1645, and a second constraint boss 1646; the threaded hole 1641, the first sensor connection hole 1642, and the second sensor connection hole 1643 are all arranged on the slider body 1644, and the threaded hole 1641 is located in the middle of the slider body 1644, and the first sensor connection hole 1642 and the second sensor connection hole 1643 are respectively located on both sides of the threaded hole 1641. One end of the first constraint boss 1645 is arranged at one end of the slider body 1644 close to the first sensor connection hole 1642, and the other end of the first constraint boss 1645 is located in the first constraint boss slideway 131. One end of the second constraint boss 1646 is arranged at one end of the slider body 1644 close to the second sensor connection hole 1643, and the other end of the second constraint boss 1646 is located in the second constraint boss slideway 151.

[0074] Specifically, the first push rod column 162 and the second push rod column 163 of the push rod 16 of the present application are connected to the threaded slider 164, and the shaft rod 17 passes through the threaded hole 1641 of the threaded slider 164. The first constraint boss 1645 and the second constraint boss 1646 at both ends of the threaded slider 164 are respectively matched with the first constraint boss slideway 131 and the second constraint boss slideway 151 in a clearance, so that the rotational motion transmitted by the shaft rod 17 to the threaded slider 164 can be converted into linear motion, so that the push rod 16 only moves linearly along the axis, and will not rotate relative to the valve core 21 of the charging and discharging valve 2, which solves the problem of relative movement when the push rod 16 applies a force to the valve core 21 of the charging and discharging valve 2.

[0075] The threaded slider 164 can be a split structure or an integrated structure, and the present application prefers an integrated structure.

[0076] Further, such as Figure 1-4 As shown, the opening tool 1 further includes a scale 19 , which is disposed on the first column 13 and / or the second column 15 .

[0077] Specifically, the present application places a first sensor 165 and a second sensor 166 between the threaded slider 164 and the first push rod column 162 and the second push rod column 163, respectively, and provides a scale 19 on the first column 13 or the second column 15, which can further quantify the force and displacement when the filling and discharge valve 2 pushes open the valve core 21, thereby solving the problem of quantifying the valve opening torque.

[0078] Furthermore, the scale 19 is bonded to the first column 13 and / or the second column 15, but is not limited to bonding. In the present application, bonding is preferred.

[0079] Furthermore, the scale 19 is bonded to the first column 13 and / or the second column 15 by AB glue, but is not limited to AB glue bonding. AB glue bonding is preferred in the present application.

[0080] Further, such as Figure 1-3 As shown, the tooling base 4 includes: a connecting column 41, an upper tooling base 42 and a lower tooling base 43. Among them, the upper end of the connecting column 41 is connected to the lower end of the upper tooling base 42, and the lower end of the connecting column 41 is connected to the upper end of the lower tooling base 43. The upper end of the upper tooling base 42 is provided with a tooling base sealing groove 421, and the fourth sealing ring is provided in the tooling base sealing groove 421. The upper tooling base 42 is also provided with a plurality of upper base mounting holes 422, and the lower end of the filling and discharge valve 2 is connected to the plurality of upper base mounting holes 422. The lower tooling base 43 is provided with a plurality of ground fastening holes 431, and is connected to the placement surface through the ground fastening holes 431.

[0081] Specifically, a plurality of filling valve lower fasteners 23 are provided at the lower end of the filling and discharge valve 2, and the plurality of filling valve lower fasteners 23 correspond one-to-one to a plurality of upper base mounting holes 422, and the lower end of the filling and discharge valve 2 is connected to the corresponding upper base mounting holes 422 through the filling valve lower fasteners 23.

[0082] Furthermore, the controller 7 is connected to the first sensor 165 and the second sensor 166 via a wire, but is not limited to being connected to the first sensor 165 and the second sensor 166 via a wire. It can also be other connection methods such as wireless communication. The present application preferably connects to the first sensor 165 and the second sensor 166 via a wire.

[0083] Furthermore, an elastic component 24 is also provided in the filling and discharge valve 2 , and the valve core 21 passes through the elastic component 24 and contacts and cooperates with the elastic component 24 .

[0084] Furthermore, the elastic component 24 is a spring, but is not limited to a spring. The present application preferably uses a spring.

[0085] like Figure 7 As shown, the present application also provides a test method for a charging and discharging valve, which is applied to the above-mentioned test device for a charging and discharging valve, and the test method comprises the following steps:

[0086] S1: Install the filling and discharge valves that need to be tested, place the fourth sealing ring in the sealing groove of the tooling base at the upper end of the tooling base, place the lower end of the filling and discharge valve at the upper end of the tooling base, and pass the multiple filling valve lower fasteners located at the lower end of the filling valve through the multiple filling and discharge valve bottom mounting holes and the multiple upper base mounting holes of the tooling base one by one, and fix them; place the third sealing ring in the sealing groove of the top opening tooling, place the top opening tooling at the upper end of the filling and discharge valve, fit the push rod with the valve core of the filling and discharge valve, and pass the multiple filling valve upper fasteners through the loop and the multiple top opening tooling mounting holes of the top opening tooling one by one, and fix them.

[0087] S2: Perform a forward air-tightness check on the valve. When the top-opening tooling does not move, an external air source inputs test gas through the air inlet nozzle. The upper sealing surface of the filling valve, the lower sealing surface of the filling valve, the valve body of the filling valve and the air outlet nozzle are checked for air-tightness by using a test gas inspection instrument to obtain the forward test gas leakage amount. The forward air-tightness check result is obtained based on the forward test gas leakage amount. If the forward test gas leakage amount is greater than the first leakage amount threshold, the forward air-tightness check result is a leakage; if the forward test gas leakage amount is less than or equal to the first leakage amount threshold, the forward air-tightness check result is no leakage, and S3 is executed.

[0088] Furthermore, the specific type and value of the detection gas are set according to actual needs. In this application, 0.5-2MPa helium is used.

[0089] Furthermore, the detection gas inspection instrument is a detection device adapted to the detection gas. When the detection gas is 0.5-2MPa helium, the detection gas inspection instrument is a helium inspection instrument.

[0090] Furthermore, the first leakage threshold is 1×10 -5 Pa·m 3 / s.

[0091] Specifically, the technical requirement is that the helium leakage detection should be ≤1×10 -5 Pa·m 3 / s.

[0092] Furthermore, a positive air tightness check of the valve is performed. When the top opening tooling is not in action, the ventilation of the external air source can be controlled manually or automatically according to the instructions of the controller.

[0093] S3: Perform a reverse airtightness check on the valve. When the top-opening tooling is not in action, an external air source inputs test gas through the air outlet nozzle. The upper sealing surface of the filling valve, the lower sealing surface of the filling valve, the valve body of the filling valve and the air inlet nozzle are checked for airtightness by using a test gas inspection instrument to obtain the reverse test gas leakage amount. The reverse airtightness check result is obtained based on the reverse test gas leakage amount. If the reverse test gas leakage amount is greater than the second leakage amount threshold, the reverse airtightness check result is a leakage; if the reverse test gas leakage amount is less than or equal to the second leakage amount threshold, the reverse airtightness check result is no leakage, and S4 is executed.

[0094] Furthermore, the second leakage threshold is 1×10 -5 Pa·m 3 / s.

[0095] Specifically, the technical requirement is that the helium leakage detection should be ≤1×10 -5 Pa·m 3 / s.

[0096] Furthermore, a reverse air tightness check of the valve is performed. When the top opening tooling is not in action, the ventilation of the external air source can be controlled manually or automatically according to the instructions of the controller.

[0097] S4: Perform valve core activity detection. Without inputting detection gas, turn the hand wheel, and the hand wheel drives the push rod of the push-open tooling to extend toward the valve core. The controller collects the force of the push rod on the valve core through the first sensor and the second sensor, detects the movement of the valve core, and records the maximum stroke of the valve core.

[0098] Further, as an embodiment, the hand wheel is rotated manually.

[0099] Furthermore, as another embodiment, the handwheel is connected to an existing automatic control device, and the automatic control device rotates the handwheel according to the instruction of the controller.

[0100] S5: Inspection of reverse pressure opening test. Input test gas from an external gas source through the gas outlet nozzle, turn the hand wheel, and the push rod extends from the push-opening fixture. When the push rod platform on the push rod contacts the valve core of the charging and discharging valve, the controller collects the force of the push rod on the valve core through the first sensor and the second sensor until the inlet and outlet pressures of the valve are balanced, and records the displacement distance of the threaded slider to detect the opening effect under reverse pressure.

[0101] Specifically, the movement stroke and force of the valve core of the charging and discharging valve are quantified by the pressure values ​​of the push rod collected by the first sensor and the second sensor, and the specific scale value of the scale to which the threaded slider moves.

[0102] The ventilation condition of the external air source for inspection and reverse pressure opening detection can be controlled manually or automatically according to the instruction of the controller.

[0103] The beneficial effects achieved by this application are as follows:

[0104] (1) The testing device and testing method for the filling and discharge valve of the present application can realize the opening and closing action of the valve during the sealing inspection process through the retractable push rod design, and improve the sensitivity of the push-open inspection action.

[0105] (2) The testing device and method for the charging and discharging valve of the present application can quantify the movement stroke and force of the valve core of the charging and discharging valve by using the pressure values ​​of the push rod collected by the first sensor and the second sensor, and the specific scale value of the threaded slider moving to the scale, thereby improving the quantitative accuracy of measuring the force and stroke displacement of the valve core of the charging and discharging valve during the opening action.

[0106] (3) The testing device and testing method for the filling and discharge valve of the present application propose a C-type slipcover with a mortise and tenon surface, which is composed of two C-type slipcover mortise and tenon joints to form a whole annular slipcover, which can be applied to the valve end face without installation bolt holes to ensure its sealing effect, thereby solving the sealing problem of the valve flange end face without installation holes.

[0107] (4) The testing device and testing method for the charging and discharging valve of the present application integrate the detection modes such as air tightness, valve core opening movement and reverse pressure-bearing opening into the same device, achieving a short-time and efficient detection effect, improving the quality of the finished charging and discharging valve, and enhancing the detection efficiency.

[0108] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the scope of protection of the present application is intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application. Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the protection scope of the present application and its equivalent technology, the present application is also intended to include these modifications and variations.

Claims

1. A testing device for a filling and discharge valve, characterized in that: include: Opening fixture, the filling and drain valves to be tested, the looper, fixture base, air inlet nozzle, air outlet nozzle and controller; The top opening tooling includes: a bearing fixing seat, a top opening tooling base, a first column, an upper fixing cover, a second column, a top rod and a shaft rod; The bearing fixing seat is arranged at the upper end of the top opening tooling base; One end of the first column is connected to the upper end of the top-open tooling base and is located on one side of the bearing fixing seat; the other end of the first column is detachably connected to one end of the upper fixing cover; one end of the second column is connected to the upper end of the top-open tooling base and is located on the other side of the bearing fixing seat; the other end of the second column is detachably connected to the other end of the upper fixing cover; A first push rod sealing hole and a second push rod sealing hole are also provided on the push-open tooling base; the first push rod sealing hole is located between the first column and the bearing fixing seat, and a first sealing ring is provided in the first push rod sealing hole; the second push rod sealing hole is located between the second column and the bearing fixing seat, and a second sealing ring is provided in the second push rod sealing hole; The mandrel comprises: a mandrel platform, a first mandrel column, a second mandrel column and a threaded slider; the threaded slider is provided with a threaded hole, a first sensor connection hole and a second sensor connection hole, and the first sensor connection hole and the second sensor connection hole are respectively located on both sides of the threaded hole; one end of the first mandrel column is connected to the upper end of the mandrel platform, and the other end of the first mandrel column passes through the first mandrel sealing hole from the lower end of the mandrel tooling base, and is located at the lower end of the threaded slider and is aligned with the first sensor connection hole; the first sensor passes through the first sensor connection hole from the upper end of the threaded slider and is connected to the first mandrel The other end of the column is detachably connected; one end of the second mandrel column is connected to the upper end of the mandrel platform, the other end of the second mandrel column passes through the second mandrel sealing hole from the lower end of the top opening tooling base, and is located at the lower end of the threaded slider, and is aligned with the second sensor connection hole, and the second sensor passes through the second sensor connection hole from the upper end of the threaded slider and is detachably connected to the other end of the second mandrel column; after the connection, the threaded slider is located between the upper fixed cover and the top opening tooling base, the mandrel platform is located between the top opening tooling base and the valve core of the charging and discharging valve, and the lower end of the mandrel platform is aligned with the valve core of the charging and discharging valve; One end of the shaft is rotatably connected to the bearing fixing seat, and the other end of the shaft passes through the threaded hole of the threaded slider and the upper fixing cover in sequence, and the rotation of the shaft drives the threaded slider to move downward or upward along the shaft, thereby driving the lower end of the push rod platform to approach the valve core of the filling and discharge valve or to move away from the valve core of the filling and discharge valve; The upper end of the adding and discharging valve is detachably connected to the top-opening tooling base through a loop, and a third sealing ring is arranged between the upper end of the adding and discharging valve and the lower end of the top-opening tooling base; the lower end of the adding and discharging valve is detachably connected to the upper end of the tooling base, and a fourth sealing ring is arranged between the lower end of the adding and discharging valve and the upper end of the tooling base; One end of the air intake nozzle is arranged on the top opening tooling base and is connected with the filling and discharge valve; One end of the air outlet nozzle is arranged on the tooling base and is connected with the filling and discharge valve; The controller is connected to the first sensor and the second sensor.

2. The testing device for a charging and discharging valve according to claim 1, characterized in that: The jacking tool also includes a hand wheel, which is connected to the other end of the shaft rod.

3. The testing device for a charging and discharging valve according to claim 1, characterized in that: A plurality of top-opening tool installation holes are arranged on the top-opening tool base, and the plurality of top-opening tool installation holes are evenly spaced and arranged in a circle with the center of the top-opening tool base as the center; The upper end of the filling and discharge valve is connected with a plurality of top-opening tooling installation holes through a loose sleeve.

4. The testing device for a charging and discharging valve according to claim 3, characterized in that: Looper includes: The first C-type looper and the second C-type looper; The first C-shaped looper comprises: a first C-shaped body, one end of the first C-shaped body is provided with a first upper looper mortise surface, and the other end of the first C-shaped body is provided with a first lower looper mortise surface; the first C-shaped body is also provided with a plurality of first looper bolt holes, the first upper looper mortise surface is provided with at least one first upper looper bolt hole, and the first lower looper mortise surface is provided with at least one first lower looper bolt hole; The second C-shaped looper comprises: a second C-shaped body, one end of the second C-shaped body is provided with a second upper looper tenon groove surface, and the other end of the second C-shaped body is provided with a second lower looper tenon groove surface; the second C-shaped body is also provided with a plurality of second looper bolt holes, the second upper looper tenon groove surface is provided with at least one second upper looper bolt hole, and the second lower looper tenon groove surface is provided with at least one second lower looper bolt hole; When connected, the first upper looper tenon groove surface and the second lower looper tenon groove surface cooperate with each other, and the first upper looper bolt hole and the second lower looper bolt hole correspond one to one, forming a third looper bolt hole; The first lower looper tenon groove surface and the second upper looper tenon groove surface cooperate with each other, and the first lower looper bolt hole and the second upper looper bolt hole correspond one to one, forming a fourth looper bolt hole; The multiple filling valve upper fasteners located at the upper end of the filling valve correspond one-to-one with the first slip-on bolt hole, the second slip-on bolt hole, the third slip-on bolt hole and the fourth slip-on bolt hole; the multiple filling valve upper fasteners located at the upper end of the filling valve correspond one-to-one with the multiple top-opening tooling installation holes; After the fastener on each filling valve passes through the corresponding first loose-loop bolt hole, the second loose-loop bolt hole, the third loose-loop bolt hole or the fourth loose-loop bolt hole, it passes through the corresponding top-opening tooling installation hole to complete the fixing.

5. The testing device for a charging and discharging valve according to claim 4, characterized in that: A fifth sealing ring is provided in each first slip-on bolt hole; a sixth sealing ring is provided in each first upper slip-on bolt hole; a seventh sealing ring is provided in each first lower slip-on bolt hole; an eighth sealing ring is provided in each second slip-on bolt hole; a ninth sealing ring is provided in each second upper slip-on bolt hole; and a tenth sealing ring is provided in each second lower slip-on bolt hole.

6. The testing device for a charging and discharging valve according to claim 1, characterized in that: A first constraint boss slideway is provided on one side of the first column close to the bearing fixing seat; A second constraint boss slideway is provided on one side of the second column close to the bearing fixing seat; One end of the threaded slider close to the first sensor connection hole is located in the first constraint boss slideway, and one end of the threaded slider close to the second sensor connection hole is located in the second constraint boss slideway.

7. The testing device for a charging and discharging valve according to claim 6, characterized in that: The threaded slider comprises: a slider body, a first constraint boss and a second constraint boss; the threaded hole, the first sensor connection hole and the second sensor connection hole are all arranged on the slider body, and the threaded hole is located in the middle of the slider body, and the first sensor connection hole and the second sensor connection hole are respectively located on both sides of the threaded hole; One end of the first constraint boss is arranged at one end of the slider body close to the first sensor connection hole, and the other end of the first constraint boss is located in the first constraint boss slideway; One end of the second constraint boss is arranged at one end of the slider body close to the second sensor connection hole, and the other end of the second constraint boss is located in the second constraint boss slideway.

8. The testing device for a charging and discharging valve according to claim 1, characterized in that: The top opening tool also includes a scale, and the scale is arranged on the first column and / or the second column.

9. The testing device for a charging and discharging valve according to claim 8, characterized in that: The tooling base includes: a connecting column, an upper tooling base and a lower tooling base; Wherein, the upper end of the connecting column is connected to the lower end of the upper tooling base, and the lower end of the connecting column is connected to the upper end of the lower tooling base; The upper end of the upper tooling base is provided with a tooling base sealing groove, and the fourth sealing ring is arranged in the tooling base sealing groove; The upper tooling base is also provided with a plurality of upper base mounting holes, and the lower end of the filling and discharge valve is connected to the plurality of upper base mounting holes; The lower tooling base is provided with a plurality of ground fastening holes, through which the lower tooling base is connected to the placement surface.

10. A method for testing a filling and discharge valve, characterized in that: The testing device for a charging and discharging valve according to any one of claims 1 to 9, the testing method comprising the following steps: S1: Install the charging and discharging valve to be tested, place the fourth sealing ring in the sealing groove of the tooling base at the upper end of the tooling base, place the lower end of the charging and discharging valve at the upper end of the tooling base, and pass the multiple charging valve lower fasteners located at the lower end of the charging valve through the multiple charging and discharging valve bottom mounting holes and the multiple upper base mounting holes of the tooling base one by one, and fix them; place the third sealing ring in the sealing groove of the top-opening tooling, place the top-opening tooling at the upper end of the charging and discharging valve, fit the ejector rod with the valve core of the charging and discharging valve, and pass the multiple charging valve upper fasteners through the loop and the multiple top-opening tooling mounting holes of the top-opening tooling one by one, and fix them; S2: Perform a forward air tightness check on the valve. When the top opening tooling does not move, an external air source inputs test gas through the air inlet nozzle. The upper sealing surface of the filling valve, the lower sealing surface of the filling valve, the valve housing of the filling valve and the air outlet nozzle are inspected for air tightness by a test gas inspection instrument to obtain a forward test gas leakage amount. A forward air tightness check result is obtained based on the forward test gas leakage amount. If the forward test gas leakage amount is greater than a first leakage amount threshold, the forward air tightness check result is leakage; if the forward test gas leakage amount is less than or equal to the first leakage amount threshold, the forward air tightness check result is no leakage, and S3 is executed. S3: Perform a reverse airtightness check on the valve. When the top opening tooling does not move, an external air source inputs test gas through the air outlet nozzle. The upper sealing surface of the filling valve, the lower sealing surface of the filling valve, the valve housing of the filling valve and the air inlet nozzle are tested for airtightness by a test gas testing instrument to obtain a reverse test gas leakage amount. A reverse airtightness test result is obtained based on the reverse test gas leakage amount. If the reverse test gas leakage amount is greater than the second leakage amount threshold, the reverse airtightness test result is a leakage. If the reverse test gas leakage amount is less than or equal to the second leakage amount threshold, the reverse airtightness test result is no leakage, and S4 is executed. S4: Perform valve core activity detection. Without inputting detection gas, turn the hand wheel, and the hand wheel drives the push rod of the push-open tooling to extend toward the valve core. The controller collects the force of the push rod on the valve core through the first sensor and the second sensor, detects the movement of the valve core, and records the maximum stroke of the valve core. S5: Inspection of reverse pressure opening test. Input test gas from an external gas source through the gas outlet nozzle, turn the hand wheel, and the push rod extends from the push-opening fixture. When the push rod platform on the push rod contacts the valve core of the charging and discharging valve, the controller collects the force of the push rod on the valve core through the first sensor and the second sensor until the inlet and outlet pressures of the valve are balanced, and records the displacement distance of the threaded slider to detect the opening effect under reverse pressure.

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