CN112033620B - Multi-station valve pressure test table - Google Patents
Multi-station valve pressure test table Download PDFInfo
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- CN112033620B CN112033620B CN202011111401.6A CN202011111401A CN112033620B CN 112033620 B CN112033620 B CN 112033620B CN 202011111401 A CN202011111401 A CN 202011111401A CN 112033620 B CN112033620 B CN 112033620B
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- 230000000903 blocking effect Effects 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 19
- 230000009471 action Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a multi-station valve pressure test table which comprises a workbench, a lower clamping seat, an upper clamping seat, a top plate, a first pipe body and a second pipe body, wherein the bottom end of the lower clamping seat is fixedly connected with the top end of the workbench, a low-pressure air inlet valve, a pressure release valve and a high-pressure air inlet valve are respectively arranged on the side surface of the front side of the workbench, the first pipe body and the second pipe body are arranged in the workbench, the low-pressure air inlet valve and the pressure release valve are both communicated with the first pipe body, and the first pipe body and the second pipe body are mutually communicated; and stop valves are arranged in the first pipe body and between the first pipe body and the two pipe bodies, and the first pipe body is communicated with the lower clamping seat. When the valve is taken down from between lower clamping seat and the upper clamping seat, the guide rod can drive the first movable block and the second movable block to restore to the original positions under the action of the spring until the blocking block is inside the connecting hole, and the connecting hole and the through hole can be sealed at the moment, so that the protection capability is enhanced.
Description
Technical Field
The invention relates to a valve pressure test table, in particular to a multi-station valve pressure test table.
Background
The valve is a pressure pipeline element, which is a device for changing the section of a pipeline and the flow direction of a medium and controlling the pressure, flow, temperature and pressure of the medium to be conveyed, has the functions of diversion, interception, regulation, diversion, overflow pressure relief and the like, and is widely applied to various main fields of national economy, and the quality of the valve directly influences the quality of pressure pipeline engineering, so that the quality of the valve needs to be strictly controlled.
The valve sealing test is one of the most important and basic items for checking the reliability of the valve, and is a test for checking the sealing performance of an opening and closing part and a valve sealing pair, and each valve needs to be subjected to a pressure sealing test before delivery so as to ensure that the valve has enough strength and reliable performance.
Because of the difference between the nominal diameter and the nominal pressure of the valve, the matched flange sizes of different valves are different, and at present, the valve pressure sealing test bed in the market detects the valves one by using universal detection equipment, so that the valve pressure sealing test bed has the advantages of complex working procedure, inconvenient operation and low detection efficiency. Therefore, a multi-station valve pressure test table is provided for solving the problems.
Disclosure of Invention
A multi-station valve pressure test table comprises a workbench, a lower clamping seat, an upper clamping seat, a top plate, a first pipe body and a second pipe body;
The workbench is internally provided with a first pipe body and a second pipe body, the low-pressure air inlet valve and the pressure relief valve are communicated with the first pipe body, the high-pressure air inlet valve is communicated with the second pipe body, and the first pipe body and the second pipe body are communicated with each other; stop valves are arranged in the first pipe body and between the first pipe body and the two pipe bodies, and the first pipe body is communicated with the lower clamping seat;
The lower clamping seat is internally provided with a first movable block, the top end of the first movable block is sleeved with a sealing gasket, the bottom end of the first movable block is provided with a fixed block, the fixed block is fixedly connected with the inner side wall of the lower clamping seat, and the top ends of the first movable block and the fixed block are provided with connecting holes; the top end of the fixed block is provided with a guide hole, the bottom end of the first movable block is fixedly connected with a guide rod, the bottom end of the guide rod penetrates through the guide hole, the bottom end of the fixed block is provided with a second movable block, and the bottom end of the guide rod is fixedly connected with the top end of the second movable block; a blocking block is fixedly connected to the top end of the second movable block, through holes are formed in two sides of the blocking block, and the through holes are formed in the top end of the second movable block; the lower clamping seat is internally provided with a movable cavity, the bottom end of the piston rod is sleeved in the movable cavity, the top end of the piston rod is fixedly connected with the bottom end of the second movable block, and the bottom end of the piston rod is provided with a spring;
The top plate top end fixedly connected with a cylinder, the tail end of an output shaft of the cylinder is fixedly connected with the top end of the upper clamping seat, a guide rail is arranged on the rear side of the upper clamping seat, the top end of the guide rail is fixedly connected with the bottom end of the top plate, a guide groove is formed in the front side surface of the guide rail, a guide block is fixedly connected with the rear side surface of the upper clamping seat, and the guide block is clamped in the guide groove.
Further, a support column is arranged between the workbench and the top plate, the top end of the support column is fixedly connected with the bottom end of the top plate, and the bottom end of the support column is fixedly connected with the top end of the workbench.
Further, the side surface of the front side of the top plate is provided with pressure gauges, the number of the pressure gauges is the same as that of the upper clamping seats, a connecting pipe is arranged between the pressure gauges and the upper clamping seats, and the connecting pipe is used for communicating the pressure gauges with the upper clamping seats.
Further, the number of the lower clamping seat is the same as that of the upper clamping seat, and the inner cavities of the lower clamping seat and the upper clamping seat are of boss structures.
Further, the lower clamping seat and the upper clamping seat are both provided with sealing gaskets, and the two sealing gaskets are connected with the lower clamping seat and the upper clamping seat in a clamping manner.
Further, the guide block is of an I-shaped structure, the guide groove is of a concave structure, and the guide block and the guide groove are in sliding connection.
Further, the stop valves are positioned between two adjacent lower clamping seats, and the stop valves are equidistantly distributed on the surface of the first pipe body.
Further, the blocking block is matched with the size of the connecting hole, the through holes are of a fan-shaped structure, and the two through holes are symmetrically distributed at the top end of the second movable block.
Further, the first movable block and the second movable block are both in sliding connection with the fixed block, and the guide rods are symmetrically distributed between the first movable block and the second movable block.
Further, a water storage cylinder is arranged on one side of the lower clamping seat, the bottom end of the water storage cylinder is fixedly connected with the bottom end of the workbench, and the water storage cylinder is communicated with the lower clamping seat. .
The beneficial effects of the invention are as follows: the invention provides a multi-station valve pressure test table with strong universality and protective capability.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic overall perspective view of an embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of a workbench according to an embodiment of the invention;
FIG. 3 is a schematic view of a lower clamping seat according to an embodiment of the present invention;
FIG. 4 is a diagram showing the connection of a guide bar to a second movable block according to an embodiment of the present invention;
FIG. 5 is a schematic view of an upper clamping seat according to an embodiment of the present invention;
fig. 6 is a diagram showing a connection between the upper clamping seat and the sliding rail according to an embodiment of the present invention.
In the figure: 1. the hydraulic pressure device comprises a workbench, 2, a low-pressure air inlet valve, 3, a pressure relief valve, 4, a high-pressure air inlet valve, 5, a lower clamping seat, 51, a movable cavity, 6, an upper clamping seat, 61, a guide block, 7, a top plate, 8, an air cylinder, 9, a pressure gauge, 10, a support column, 11, a connecting pipe, 12, a guide rail, 121, a guide groove, 13, a stop valve, 14, a first pipe body, 15, a second pipe body, 16, a first movable block, 161, a connecting hole, 17, a sealing gasket, 18, a fixed block, 181, a guide hole, 19, a guide rod, 20, a second movable block, 201, a through hole, 202, a blocking block, 21, a piston rod, 22, a spring, 23 and a water storage cylinder.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present invention and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present invention will be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1-6, a multi-station valve pressure test table comprises a workbench 1, a lower clamping seat 5, an upper clamping seat 6, a top plate 7, a first pipe body 14 and a second pipe body 15;
the top end of the workbench 1 is provided with a lower clamping seat 5, the bottom end of the lower clamping seat 5 is fixedly connected with the top end of the workbench 1, the side surface of the front side of the workbench 1 is respectively provided with a low-pressure air inlet valve 2, a pressure release valve 3 and a high-pressure air inlet valve 4, the interior of the workbench 1 is provided with a first pipe body 14 and a second pipe body 15, the low-pressure air inlet valve 2 and the pressure release valve 3 are communicated with the first pipe body 14, the high-pressure air inlet valve 4 is communicated with the second pipe body 15, and the first pipe body 14 and the second pipe body 15 are mutually communicated; the inside of the first pipe body 14 and between the first pipe body 14 and the two pipe bodies are provided with stop valves 13, and the first pipe body 14 is communicated with the lower clamping seat 5;
The inside of the lower clamping seat 5 is provided with a first movable block 16, the top end of the first movable block 16 is sleeved with a sealing gasket 17, the bottom end of the first movable block 16 is provided with a fixed block 18, the fixed block 18 is fixedly connected with the inner side wall of the lower clamping seat 5, and the top ends of the first movable block 16 and the fixed block 18 are provided with connecting holes 161; the top end of the fixed block 18 is provided with a guide hole 181, the bottom end of the first movable block 16 is fixedly connected with a guide rod 19, the bottom end of the guide rod 19 penetrates through the guide hole 181, the bottom end of the fixed block 18 is provided with a second movable block 20, and the bottom end of the guide rod 19 is fixedly connected with the top end of the second movable block 20; a blocking block 202 is fixedly connected to the top end of the second movable block 20, through holes 201 are formed in two sides of the blocking block 202, and the through holes 201 are formed in the top end of the second movable block 20; the lower clamping seat 5 is internally provided with a movable cavity 51, the bottom end of the piston rod 21 is sleeved in the movable cavity 51, the top end of the piston rod 21 is fixedly connected with the bottom end of the second movable block 20, and the bottom end of the piston rod 21 is provided with a spring 22;
The top of the top plate 7 is fixedly connected with an air cylinder 8, the tail end of an output shaft of the air cylinder 8 is fixedly connected with the top of the upper clamping seat 6, a guide rail 12 is arranged at the rear side of the upper clamping seat 6, the top of the guide rail 12 is fixedly connected with the bottom of the top plate 7, a guide groove 121 is formed in the front side surface of the guide rail 12, a guide block 61 is fixedly connected to the side surface of the rear side of the upper clamping seat 6, and the guide block 61 is clamped in the guide groove 121.
A support column 10 is arranged between the workbench 1 and the top plate 7, the top end of the support column 10 is fixedly connected with the bottom end of the top plate 7, and the bottom end of the support column 10 is fixedly connected with the top end of the workbench 1, so that the top structure of the workbench is supported; the pressure gauge 9 is arranged on the side surface of the front side of the top plate 7, the number of the pressure gauge 9 is the same as that of the upper clamping seats 6, a connecting pipe 11 is arranged between the pressure gauge 9 and the upper clamping seats 6, the pressure gauge 9 is communicated with the upper clamping seats 6 by the connecting pipe 11, and the pressure inside the valve can be detected through the pressure gauge 9; the number of the lower clamping seats 5 is the same as that of the upper clamping seats 6, the inner cavities of the lower clamping seats 5 and the upper clamping seats 6 are of boss structures, and the valve can be fixed through the cooperation between the lower clamping seats 5 and the upper clamping seats 6; the sealing gaskets 17 are arranged in the lower clamping seat 5 and the upper clamping seat 6, and the two sealing gaskets 17 are in clamping connection with the lower clamping seat 5 and the upper clamping seat 6, so that the sealing performance is enhanced; the guide block 61 is in an I-shaped structure, the guide groove 121 is in a concave structure, and the guide block and the guide groove are in sliding connection, so that the stability of the guide block and the guide groove during sliding is enhanced; the stop valves 13 are positioned between two adjacent lower clamping seats 5, the stop valves 13 are equidistantly distributed on the surface of the first pipe body 14, and the synchronous work of the low-pressure air inlet valve 2 and the high-pressure air inlet valve 4 can be controlled through the stop valves 13; the blocking block 202 is matched with the connecting hole 161 in size, the through holes 201 are in a fan-shaped structure, the two through holes 201 are symmetrically distributed at the top end of the second movable block 20, and the lower clamping seat 5 and the upper clamping seat 6 can be communicated through the through holes 201; the first movable block 16 and the second movable block 20 are both in sliding connection with the fixed block 18, the guide rods 19 are symmetrically distributed between the first movable block 16 and the second movable block 20, and the guide rods 19 can play a role in guiding; one side of the lower clamping seat 5 is provided with a water storage cylinder 23, the bottom end of the water storage cylinder 23 is fixedly connected with the bottom end of the workbench 1, and the water storage cylinder 23 is communicated with the lower clamping seat 5, so that sealing test of a water valve is facilitated.
When the valve is used, the valve is firstly placed between the lower clamping seat 5 and the upper clamping seat 6, the air cylinder 8 works at the moment, and the air cylinder 8 drives the upper clamping seat 6 to move towards the bottom end through the guide block 61 and the guide groove 121 on the side surface of the guide rail 12 until the valve is clamped and fixed between the lower clamping seat 5 and the upper clamping seat 6; simultaneously, when the lower clamping seat 5 and the upper clamping seat 6 are clamped, the first movable block 16 and the second movable block 20 move towards the bottom end along the guide hole 181, the spring 22 can be compressed under the action of the piston rod 21, at the moment, the blocking block 202 can be separated from the connecting hole 161, and the lower clamping seat 5 can be communicated with the bottom structure under the action of the connecting hole 161 and the through hole 201;
Then the water supply valve is opened to fill the water storage cylinder 23 with water, after the air of the water storage cylinder 23 is exhausted, the upper air outlet is closed, the pressure is increased to the required pressure by the pressurizing pump, the pressure value is observed by the pressure gauge 9, and the valve is inspected according to the inspection standard specification; after the valve pressure test is finished, the pressurizing pump is stopped, the drainage valve is opened to release pressure, and the water is drained until the valve sealing test is finished; the low-pressure air inlet valve 2 and the high-pressure air inlet valve 4 are designed according to the parallel principle, and can simultaneously test low pressure or high pressure on different valves by controlling the opening and closing of the stop valve 13, so that the universality is strong.
The invention has the advantages that:
1. When the valve is taken down from between the lower clamping seat and the upper clamping seat, the guide rod drives the first movable block and the second movable block to restore to the original positions under the action of the spring until the blocking block is arranged inside the connecting hole, and the connecting hole and the through hole are sealed at the moment, so that the protection capability is enhanced, and external objects are prevented from entering;
2. According to the invention, the water storage cylinder is filled with water by opening the water feeding valve, the upper air outlet is closed after the air of the water storage cylinder is exhausted, the pressure can be increased to the required pressure by using the pressurizing pump through the low-pressure air inlet valve or the high-pressure air inlet valve, and the valve is inspected according to the inspection standard specification by observing the pressure value through the pressure surface;
3. According to the invention, the low-pressure air inlet valve and the high-pressure air inlet valve are designed according to the parallel principle, so that the low-pressure air inlet valve and the high-pressure air inlet valve are connected with a plurality of lower clamping seats, the low-pressure or high-pressure test can be simultaneously carried out on different valves by controlling the opening and closing of the stop valve, the universality is high, the pressure test can be carried out on the valves with various specifications at one time, the working procedure is lightened, and the detection efficiency is improved.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. Multistation valve test bench, its characterized in that: comprises a workbench (1), a lower clamping seat (5), an upper clamping seat (6), a top plate (7), a first pipe body (14), a piston rod (21) and a second pipe body (15);
The automatic clamping device is characterized in that a lower clamping seat (5) is arranged at the top end of the workbench (1), the bottom end of the lower clamping seat (5) is fixedly connected with the top end of the workbench (1), a low-pressure air inlet valve (2), a pressure release valve (3) and a high-pressure air inlet valve (4) are respectively arranged on the side surface of the front side of the workbench (1), a first pipe body (14) and a second pipe body (15) are arranged inside the workbench (1), the low-pressure air inlet valve (2) and the pressure release valve (3) are communicated with the first pipe body (14), the high-pressure air inlet valve (4) is communicated with the second pipe body (15), and the first pipe body (14) and the second pipe body (15) are mutually communicated; a stop valve (13) is arranged in the first pipe body (14) and between the first pipe body (14) and the two pipe bodies, and the first pipe body (14) is communicated with the lower clamping seat (5);
The lower clamping seat (5) is internally provided with a first movable block (16), the top end of the first movable block (16) is sleeved with a sealing gasket (17), the bottom end of the first movable block (16) is provided with a fixed block (18), the fixed block (18) is fixedly connected with the inner side wall of the lower clamping seat (5), and the top ends of the first movable block (16) and the fixed block (18) are provided with connecting holes (161); the top end of the fixed block (18) is provided with a guide hole (181), the bottom end of the first movable block (16) is fixedly connected with a guide rod (19), the bottom end of the guide rod (19) penetrates through the guide hole (181), the bottom end of the fixed block (18) is provided with a second movable block (20), and the bottom end of the guide rod (19) is fixedly connected with the top end of the second movable block (20); a blocking block (202) is fixedly connected to the top end of the second movable block (20), through holes (201) are formed in two sides of the blocking block (202), and the through holes (201) are formed in the top end of the second movable block (20); the lower clamping seat (5) is internally provided with a movable cavity (51), the bottom end of the piston rod (21) is sleeved in the movable cavity (51), the top end of the piston rod (21) is fixedly connected with the bottom end of the second movable block (20), and the bottom end of the piston rod (21) is provided with a spring (22);
The top of the top plate (7) is fixedly connected with an air cylinder (8), the tail end of an output shaft of the air cylinder (8) is fixedly connected with the top of the upper clamping seat (6), a guide rail (12) is arranged at the rear side of the upper clamping seat (6), the top of the guide rail (12) is fixedly connected with the bottom of the top plate (7), a guide groove (121) is formed in the front side surface of the guide rail (12), a guide block (61) is fixedly connected with the side surface of the rear side of the upper clamping seat (6), and the guide block (61) is clamped in the guide groove (121);
A support column (10) is arranged between the workbench (1) and the top plate (7), the top end of the support column (10) is fixedly connected with the bottom end of the top plate (7), and the bottom end of the support column (10) is fixedly connected with the top end of the workbench (1); the pressure gauge is characterized in that a pressure gauge (9) is arranged on the front side face of the top plate (7), the number of the pressure gauge (9) and the number of the upper clamping seats (6) are the same, a connecting pipe (11) is arranged between the pressure gauge (9) and the upper clamping seats (6), and the connecting pipe (11) is used for communicating the pressure gauge (9) with the upper clamping seats (6).
2. The multi-station valve test bench of claim 1, wherein: the number of the lower clamping seats (5) is the same as that of the upper clamping seats (6), and the inner cavities of the lower clamping seats (5) and the upper clamping seats (6) are of boss structures.
3. The multi-station valve test bench of claim 1, wherein: the lower clamping seat (5) and the upper clamping seat (6) are internally provided with sealing gaskets (17), and the two sealing gaskets (17) are connected with the lower clamping seat (5) and the upper clamping seat (6) in a clamping mode.
4. The multi-station valve test bench of claim 1, wherein: the guide block (61) is of an I-shaped structure, the guide groove (121) is of a concave structure, and the guide block and the guide groove are in sliding connection.
5. The multi-station valve test bench of claim 1, wherein: the stop valves (13) are positioned between two adjacent lower clamping seats (5), and the stop valves (13) are equidistantly distributed on the surface of the first pipe body (14).
6. The multi-station valve test bench of claim 1, wherein: the blocking blocks (202) are matched with the connecting holes (161) in size, the through holes (201) are of a fan-shaped structure, and the two through holes (201) are symmetrically distributed at the top ends of the second movable blocks (20).
7. The multi-station valve test bench of claim 1, wherein: the first movable block (16) and the second movable block (20) are both in sliding connection with the fixed block (18), and the two guide rods (19) are symmetrically distributed between the first movable block (16) and the second movable block (20).
8. The multi-station valve test bench of claim 1, wherein: one side of the lower clamping seat (5) is provided with a water storage cylinder (23), the bottom end of the water storage cylinder (23) is fixedly connected with the bottom end of the workbench (1), and the water storage cylinder (23) is communicated with the lower clamping seat (5).
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| CN202011111401.6A CN112033620B (en) | 2020-10-16 | 2020-10-16 | Multi-station valve pressure test table |
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| CN202011111401.6A CN112033620B (en) | 2020-10-16 | 2020-10-16 | Multi-station valve pressure test table |
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| CN112033620A CN112033620A (en) | 2020-12-04 |
| CN112033620B true CN112033620B (en) | 2024-08-02 |
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| CN211576890U (en) * | 2020-01-08 | 2020-09-25 | 江苏亚慧特包装材料科技有限公司 | Bubble chamber film detection device |
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