Rapid clamping device for micro pore plate test tool

Abstract

The invention relates to a rapid clamping device for a microminiature pore plate test tool, which is used for improving the clamping efficiency of the microminiature pore plate tool and further improving the test efficiency of a pore plate test. According to the orifice plate liquid flow test tool pressing device, the water inlet and outlet tool and the orifice plate tool are in motor driving pressing connection, and the motor driving pressing force is controllable; the pore plate tool and the water inlet and outlet tool are easy to disassemble, the water outlet tool and the water inlet tool are provided with drainage holes and water retaining covers, and when the pressing device is disconnected from the pore plate tool, part of high-pressure liquid in the tool can be prevented from splashing; the orifice plate tool, the water outlet tool and the water inlet tool are respectively provided with a concave-convex butt joint surface, the butt joint precision of tool flow channels is high, and butt joint surface sealing rings are pressed and fixed to the surface of the orifice plate tool, so that the sealing function of the tool is achieved, and meanwhile, the sealing rings can be prevented from shifting to block the flow channels or falling off in the testing and disassembling process.

Description

Technical Field

[0001] The invention relates to a quick clamping device for a micro-sized orifice plate test fixture, belonging to the technical field of liquid rocket engines. Background Art

[0002] The orifice plate is an important component for regulating the pressure parameters of the liquid rocket engine system. Its design performance plays a key role in controlling the discharge rate and pressure of the fluid, ensuring the stable operation of the engine system.

[0003] At present, the orifice flow resistance test of liquid rocket engines mostly uses manual installation of the orifice plate into the test fixture, and then docking the fixture with the test system. The docking form is mostly threaded connection. Due to the small size and large number of orifice plates, it is difficult to disassemble and assemble, and the working time is long. For orifice plates of different specifications, the corresponding fixture and docking joint need to be replaced. There is a large consumption of personnel during the test process, and the test efficiency is low. Therefore, a device that can realize the rapid clamping of micro-orifice plate test fixtures is needed to improve the clamping efficiency of micro-orifice plate fixtures, thereby improving the test efficiency of orifice plate tests. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and solve the problem of installation and testing efficiency of orifice plate fixtures.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A micro-sized orifice plate test fixture quick clamping device comprises an orifice plate fixture, a water inlet fixture, a water outlet fixture, an upper clamping mechanism, a lower clamping mechanism and a test cabinet.

[0007] The orifice plate fixture includes a fixture block, an upper clamping ring, a lower clamping ring, an upper sealing ring, a lower sealing ring, and an orifice plate. The main structure is the fixture block, and the fixture block is provided with an upper clamping ring groove A, a lower clamping ring groove B, an upper sealing ring installation positioning hole C, a lower sealing ring installation positioning hole D and an orifice plate installation positioning hole E.

[0008] The upper sealing ring is assembled in the upper sealing ring installation positioning hole C, the upper clamping ring cooperates with the upper clamping ring recess A to clamp the upper sealing ring, and the upper clamping ring is fastened to the tooling block with bolts to realize the connection between the upper sealing ring of the orifice plate tooling and the orifice plate tooling.

[0009] The lower sealing ring is assembled in the lower sealing ring installation positioning hole D, the lower clamping ring cooperates with the lower clamping ring recess B to clamp the lower sealing ring, and the lower clamping ring is fastened to the tooling block with bolts to achieve the connection between the lower sealing ring and the orifice plate tooling.

[0010] The orifice plate is assembled in the orifice plate installation positioning hole E. A clamping positioning groove is provided on the side of the orifice plate fixture, and the orifice plate and the orifice plate fixture can be transported by a clamping device.

[0011] The water inlet fixture is provided with a water inlet flow channel, and the lower clamping end face of the water inlet fixture is provided with a water inlet fixture matching hole and a water inlet leakage hole. The matching hole of the water inlet fixture cooperates with the clamping ring on the orifice plate fixture to realize the leakage of residual liquid during the assembly and separation of the orifice plate fixture and the water inlet fixture. The water inlet flow is connected to the end face of the orifice plate fixture through the sealing ring on the orifice plate fixture. The water inlet leakage hole connects the matching hole of the water inlet fixture with the outer side of the water outlet fixture.

[0012] The outlet tooling is provided with an outlet flow channel inside, and the upper clamping end face of the outlet tooling is provided with an outlet tooling matching hole and an outlet leakage hole. The outlet tooling matching hole cooperates with the lower clamping ring to realize the leakage of residual liquid during the assembly and separation of the orifice plate tooling and the outlet tooling. The outlet water flows through the lower sealing ring and is sealed and connected with the end face of the orifice plate tooling. The outlet leakage hole connects the outlet tooling matching hole and the outer side of the water inlet tooling.

[0013] The upper clamping mechanism includes an upper drive motor, an upper coupling, an upper fixed bearing pair, an upper motion component, an upper screw shaft, an upper contact sensor, an upper limit baffle, an upper screw connector, a water entry water baffle, and a water entry tooling fixed pair; the upper drive motor is installed at the upper end of the fixed back plate, connected to the upper screw shaft through the upper coupling, upper fixed bearing pairs are installed at both ends of the upper screw shaft, the upper fixed bearing pair is installed on the front end surface of the fixed back plate, the track is installed on the front end surface of the fixed back plate, and the two ends of the upper motion component are connected to the track through sliders, and the upper drive motor drives the upper motion component to realize the up and down translation movement.

[0014] The water entry tooling is bolted to the water entry water shield. The body of the water entry tooling is fixedly connected by the water entry tooling fixing pair, and the water entry tooling fixing pair is connected to the upper motion component. An upper screw connector and an upper limit stopper are installed on the inner side panel of the upper motion component. The upper motion component is connected to the upper screw shaft through the upper screw connector. An upper limit stopper is provided inside the upper motion component, and the movement of the upper motion component is limited by the upper contact sensor.

[0015] The lower clamping mechanism includes a lower drive motor, a lower coupling, a lower fixed bearing pair, a lower motion component, a lower screw shaft, a lower contact sensor, a lower limit baffle, a lower screw connector, a water outlet water shield, a sealing gasket, and a water outlet fixture fixed pair. The lower drive motor is installed at the lower end of the fixed back plate, connected to the lower screw shaft through the lower coupling, and lower fixed bearing pairs are installed at both ends of the lower screw shaft. The lower fixed bearing pair is installed on the front end surface of the fixed back plate. The two ends of the lower motion component are connected to the track through a slider, and the lower motion component is driven by the lower drive motor to realize the up and down translation movement.

[0016] A sealing gasket is installed between the water outlet tooling and the water outlet water shield and connected by bolts. The body of the water outlet tooling is fixedly connected by the water outlet tooling fixing pair, and the water outlet tooling fixing pair is connected to the lower motion component. A lower lead screw connector and a lower limit baffle are installed on the inner side panel of the lower motion component. The lower motion component is connected to the lower lead screw shaft through the lead screw connector. A lower limit baffle is provided inside the lower motion component, and the movement of the lower motion component is limited by the lower contact sensor.

[0017] The test cabinet includes an upper drive motor protection cover, a water entry tooling protection cover, a water outlet tooling protection cover, a lower drive motor protection cover, a fixed back plate, and a track. The fixed back plate rib seat is installed on the test cabinet countertop, and the upper drive motor protection cover, the water entry tooling protection cover, the water outlet tooling protection cover, and the lower drive motor protection cover are installed on the front end of the fixed back plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) In the orifice plate liquid flow test fixture clamping device of the present invention, the water inlet and outlet fixture and the orifice plate fixture are motor-driven and clamped. Compared with the ordinary threaded orifice plate, the motor-driven clamping force is controllable, the orifice plate fixture and the water inlet and outlet fixture are easy to disassemble, and the orifice plate disassembly and assembly efficiency is higher.

[0020] (2) In the orifice plate liquid flow test fixture of the present invention, the water outlet fixture and the water inlet fixture are provided with drainage holes and water shields. When the clamping device is disconnected from the orifice plate fixture, part of the high-pressure liquid in the fixture can be prevented from splashing.

[0021] (3) In the orifice plate liquid flow test fixture of the present invention, the orifice plate fixture and the water outlet fixture and the water inlet fixture are all provided with concave and convex docking surfaces, the tooling flow channel docking precision is high, and the sealing ring of the docking surface is fixed to the surface of the orifice plate fixture by pressing, which realizes the sealing function of the tooling and can also prevent the sealing ring from shifting and blocking the flow channel or falling off during the test and disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a cross-sectional view of the orifice plate tooling for orifice plate liquid flow testing of the present invention.

[0023] Figure 2 This is an exploded view of the orifice plate liquid flow test fixture of the present invention.

[0024] Figure 3 It is a cross-sectional view of the upper and lower inlet fixtures of the orifice plate liquid flow test fixture of the present invention.

[0025] Figure 4 This is a diagram of the clamping device for the inlet and outlet water equipment of the orifice plate liquid flow test of the present invention.

[0026] Figure 5 This is the appearance diagram of the orifice plate liquid flow test cabinet of the present invention.

[0027] Figure markings: 1-orifice plate fixture; 101-fitting block; 102-upper clamping ring; 103-lower clamping ring; 104-upper sealing ring; 105-lower sealing ring; 106-orifice plate; 107-clamping positioning groove; 101A-upper clamping ring groove; 101B-lower clamping ring groove; 101C-upper sealing ring installation positioning hole; 101D-lower sealing ring installation positioning hole; 101E-orifice plate installation positioning hole; 2-water inlet fixture; 201-water inlet fixture matching hole; 202-water inlet leakage hole; 203-water inlet flow channel; 3-water outlet fixture; 301-water outlet fixture matching hole; 302-water outlet leakage hole; 303-water outlet flow channel; 4-water inlet water retaining cover; 5-water outlet water retaining cover; 6-sealing gasket; 7-water inlet fixture fixing pair; 9-water outlet Fixture fixed pair; 11-fixed back plate; 12-track; 181-upper drive motor; 182-upper coupling; 183-upper fixed bearing pair; 184-upper motion assembly; 185-upper screw shaft; 186-upper contact sensor; 187-upper screw connector; 188-upper limit baffle; 191-lower drive motor; 192-lower coupling; 193-lower fixed bearing pair; 194-lower motion assembly; 195-lower screw shaft; 196-lower contact sensor; 197-lower screw connector; 198-lower limit baffle; 13-water entry tooling protection cover; 14-upper drive motor protection cover; 15-water outlet tooling protection cover; 16-lower drive motor protection cover; 17-test cabinet; 18-upper clamping mechanism; 19-lower clamping mechanism. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] A micro-sized orifice plate test fixture quick clamping device comprises an orifice plate fixture 1, a water inlet fixture 2, a water outlet fixture 3, an upper clamping mechanism 18, a lower clamping mechanism 19, and a test cabinet 17.

[0030] The orifice plate fixture 1 includes a fixture block 101, an upper clamping ring 102, a lower clamping ring 103, an upper sealing ring 104, a lower sealing ring 105, and an orifice plate 106. Figure 2 As shown, the main structure is a tooling block 101, and the tooling block 101 is provided with an upper clamping ring recess 101A, a lower clamping ring recess 101B, an upper sealing ring installation positioning hole 101C, a lower sealing ring installation positioning hole 101D and a hole plate installation positioning hole 101E, as shown in FIG. Figure 1 shown.

[0031] The upper sealing ring 104 is assembled in the upper sealing ring installation positioning hole 101C, the upper clamping ring 102 cooperates with the upper clamping ring recess 101A to clamp the upper sealing ring 106, and the upper clamping ring 102 is fastened to the tooling block 101 with bolts to realize the connection between the orifice plate tooling upper sealing ring 104 and the orifice plate tooling 1, as shown in FIG. Figure 1 shown.

[0032] The lower sealing ring 105 is assembled in the lower sealing ring installation positioning hole 101D, the lower clamping ring 103 cooperates with the lower clamping ring recess 101B to clamp the lower sealing ring 105, and the lower clamping ring 103 is fastened to the tooling block 101 with bolts to achieve the connection between the lower sealing ring 105 and the orifice plate tooling 1, as shown in FIG. Figure 1 shown.

[0033] The orifice plate 106 is assembled in the orifice plate installation positioning hole 101E, and a clamping positioning groove 107 is provided on the side of the orifice plate fixture 1, and the orifice plate 106 and the orifice plate fixture 1 can be transported by a clamping device, such as Figure 1 shown.

[0034] A water inlet flow channel 203 is provided inside the water inlet fixture 2, and a water inlet fixture matching hole 201 and a water inlet leakage hole 202 are provided on the lower pressing end surface of the water inlet fixture 2. The water inlet fixture matching hole 201 cooperates with the pressing ring 102 on the orifice plate fixture 1 to realize the leakage of residual liquid during the assembly and separation of the orifice plate fixture 1 and the water inlet fixture 2. Figure 3 The water inlet flow 203 is connected to the end face of the orifice plate fixture 1 through the sealing ring 104 on the orifice plate fixture. The water inlet leakage hole 202 is connected to the matching hole 201 of the water inlet fixture and the outer side of the water outlet fixture 2.

[0035] The outlet tooling 3 is provided with an outlet flow channel 303, and the upper pressing end surface of the outlet tooling 2 is provided with an outlet tooling matching hole 301 and an outlet leakage hole 302. The outlet tooling matching hole 301 cooperates with the lower pressing ring 103 to realize the leakage of residual liquid during the assembly and separation of the orifice plate tooling 1 and the outlet tooling 3. The outlet flow 303 is sealed and connected with the end surface of the orifice plate tooling 1 through the lower sealing ring 105. The outlet leakage hole 302 connects the outlet tooling matching hole 301 with the outer side surface of the water inlet tooling 3, as shown in FIG. Figure 3 shown.

[0036] The upper clamping mechanism 18 includes an upper drive motor 181, an upper coupling 182, an upper fixed bearing pair 183, an upper motion component 184, an upper screw shaft 185, an upper contact sensor 186, an upper limit baffle 187, an upper screw connector 188, a water entry water baffle 4, and a water entry tooling fixed pair 7; the upper drive motor 181 is installed on the upper end of the fixed back plate 11, and is connected to the upper screw shaft 185 through the upper coupling 182. The upper fixed bearing pair 183 is installed at both ends of the upper screw shaft 185. The upper fixed bearing pair 183 is installed on the front end surface of the fixed back plate 11, and the track 12 is installed on the front end surface of the fixed back plate 11. The two ends of the upper motion component 184 are connected to the track 12 through sliders, and the upper motion component is driven by the upper drive motor to realize the up and down translation movement, such as Figure 4 shown.

[0037] The water entry tool 2 is bolted to the water entry water shield 4. The body of the water entry tool 2 is fixedly connected by the water entry tool fixing pair 7, and the water entry tool fixing pair 7 is connected to the upper movement component 184. An upper screw connector 188 and an upper limit stopper 187 are installed on the inner side panel of the upper movement component 184. The upper movement component 184 is connected to the upper screw shaft 185 through the upper screw connector 188. An upper limit stopper 187 is provided inside the upper movement component 184, and the movement of the upper movement component 184 is limited by the upper contact sensor 186, such as Figure 4 shown.

[0038] The lower clamping mechanism 19 includes a lower drive motor 191, a lower coupling 192, a lower fixed bearing pair 193, a lower motion assembly 194, a lower screw shaft 195, a lower contact sensor 196, a lower limit baffle 197, a lower screw connector 198, a water outlet water shield 5, a sealing gasket 6, and a water outlet fixture fixing pair 9. The lower drive motor 191 is installed at the lower end of the fixed back plate 11, and is connected to the lower screw shaft 195 through the lower coupling 192. The lower screw shaft 195 is installed with lower fixed bearing pairs 193 at both ends. The lower fixed bearing pairs 193 are installed on the front end surface of the fixed back plate 11. The two ends of the lower motion assembly 194 are connected to the track 12 through sliders. The lower drive motor drives the lower motion assembly to achieve up and down translational movement, such as Figure 4 shown.

[0039] A sealing gasket 6 is installed between the water outlet tooling 3 and the water outlet water shield 5 and connected by bolts. The body of the water outlet tooling 3 is fixedly connected by the water outlet tooling fixing pair 9, and the water outlet tooling fixing pair 9 is connected to the lower motion component 194. A lower screw connector 198 and a lower limit baffle 197 are installed on the inner side panel of the lower motion component 194. The lower motion component 194 is connected to the lower screw shaft 195 through the screw connector 198. A lower limit baffle 197 is provided inside the lower motion component 194, and the movement of the lower motion component 194 is limited by the lower contact sensor 196, such as Figure 4 shown.

[0040] The test cabinet 17 comprises an upper drive motor protection cover 14, a water entry tooling protection cover 13, a water exit tooling protection cover 15, a lower drive motor protection cover 16, a fixed back plate 11, and a track 12. The fixed back plate 11 rib plate is installed on the table of the test cabinet 17, and the upper drive motor protection cover 14, the water entry tooling protection cover 13, the water exit tooling protection cover 15 and the lower drive motor protection cover 16 are installed on the front end surface of the fixed back plate 11. Figure 5 shown.

[0041] The specific contents of the orifice plate test process are as follows:

[0042] 1. Install the orifice plate into the orifice plate fixture

[0043] Install the lower sealing ring 105 into the lower sealing ring installation positioning hole 101D so that the central axis of the lower sealing ring 105 is consistent with the central axis of the lower sealing ring installation positioning hole 101D. Use the inner end face of the lower clamping ring 103 to press the circumferential extension section of the lower sealing ring 105 to the end face of the tooling block 101 and fasten the lower clamping ring 103 to the tooling block 101 with screws. Using the installation and fixing method of the lower sealing ring 105, use the upper clamping ring 102 to press and connect the upper sealing ring 106 and the tooling block to the orifice plate 106. The orifice plate 106 is inserted into the upper sealing ring 105 and assembled into the orifice plate installation positioning hole 101E.

[0044] 2. Connection between orifice plate fixture and fixture clamping device

[0045] Use a clamping tool to clamp the positioning groove 107 on the body of the tooling block 101, and move the orifice plate tooling 1 equipped with the orifice plate to the middle of the water inlet tooling 2 and the water outlet tooling 3, so that the flow channel axis of the orifice plate tooling 1 is consistent with the axis of the water inlet tooling 1 and the water outlet tooling 3.

[0046] Start the upper drive motor 181, the motor shaft drives the upper screw shaft 185 to rotate through the upper coupling 182, the upper screw shaft 185 drives the upper screw connector 185 to move, thereby driving the upper motion component 184 to move downward, the upper motion component 184 drives the water entry tooling 2 to move downward through the water entry tooling fixed pair 7, when the upper limit stopper 187 moves to the upper contact sensor 186, the upper drive motor 181 stop signal is triggered, so that the water entry tooling 2 stops moving. At this time, the end face of the matching hole 201 of the water entry tooling fits the end face of the clamping ring 102 on the orifice plate tooling 1, and the water entry channel 203 is sealed and connected with the flow channel of the orifice plate tooling 1 through the upper sealing ring 104.

[0047] Start the lower drive motor 191, the motor shaft drives the lower screw shaft 195 to rotate through the lower coupling 192, the lower screw shaft 195 drives the lower screw connector 195 to move, thereby driving the lower motion assembly 194 to move upward, the lower motion assembly 194 drives the water outlet fixture 3 to move upward through the water outlet fixture fixing pair 9, and when the lower limit stopper 198 moves to the lower contact sensor 196, the lower drive motor 191 stops The signal is triggered, so that the water outlet fixture 3 stops moving. At this time, the end face of the matching hole 301 of the water outlet fixture fits the end face of the lower clamping ring 103 of the orifice plate fixture 1, and the water outlet channel 303 is sealed and connected with the flow channel of the orifice plate fixture 1 through the lower sealing ring 105.

[0048] 3. Orifice plate flow test

[0049] Liquid with a certain pressure and flow rate is introduced from the inlet of the water inlet fixture 2 , and the liquid flows through the water inlet channel 203 , then flows through the orifice plate 106 and flows into the water outlet channel 303 , and finally the liquid is discharged through the outlet pipe of the water outlet fixture 3 .

[0050] 4. Replace the orifice plate and test continuously

[0051] After the orifice plate liquid flow test is completed, if a certain pressure of liquid is stored in the water inlet fixture 2 and the water outlet fixture 3, when the upper drive motor 181 and the lower drive motor 191 drive shafts rotate in opposite directions, the water inlet fixture 2 moves upward, the water outlet fixture 3 moves downward, and the orifice plate fixture 1 is disconnected from the matching holes 201 and 301 of the water inlet fixture. Part of the liquid flows out through the water inlet leakage hole 202, flows into the water outlet water retaining cover 5 under the action of the upper water retaining cover 4, and part of the liquid flows out through the water outlet leakage hole 302 to the water outlet water retaining cover 5. After the upper drive motor 181 and the lower drive motor 191 are put back in place. Use a clamping tool to clamp the orifice plate fixture 1 and replace the orifice plate 106 to re-test.

[0052] The invention has been successfully applied to a certain type of orifice plate performance test for many times, verifying the feasibility and reliability of the device of the invention. The contents not described in detail in the specification of the invention belong to the well-known technology of those skilled in the art.

[0053] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A quick clamping device for a micro-sized orifice plate test fixture, characterized in that: It comprises an orifice plate fixture (1), a water entry fixture (2), a water outlet fixture (3), an upper clamping mechanism (18), a lower clamping mechanism (19), and a test cabinet (17); The orifice plate fixture (1) comprises a fixture block (101), an upper clamping ring (102), a lower clamping ring (103), an upper sealing ring (104), a lower sealing ring (105), and an orifice plate (106). The main structure is the fixture block (101). The fixture block (101) is provided with an upper clamping ring recess (101A), a lower clamping ring recess (101B), an upper sealing ring installation positioning hole (101C), a lower sealing ring installation positioning hole (101D), and an orifice plate installation positioning hole (101E). The upper sealing ring (104) is assembled on the upper sealing ring installation hole (101A). The upper clamping ring (102) and the upper clamping ring recess (101A) cooperate to clamp the upper sealing ring (106), and the upper clamping ring (102) and the tooling block (101) are fastened; the lower sealing ring (105) is assembled in the lower sealing ring installation positioning hole (101D), the lower clamping ring (103) and the lower clamping ring recess (101B) cooperate to clamp the lower sealing ring (105), and the lower clamping ring (103) and the tooling block (101) are fastened; the orifice plate (106) is assembled in the orifice plate installation positioning hole (101E); The water inlet fixture (2) is provided with a water inlet flow channel (203) inside, and the lower pressing end surface of the water inlet fixture (2) is provided with a water inlet fixture matching hole (201) and a water inlet leakage hole (202). The water inlet fixture matching hole (201) and the pressing ring (102) on the orifice plate fixture (1) cooperate with each other to achieve the leakage of residual liquid when the orifice plate fixture (1) and the water inlet fixture (2) are assembled and separated; the water inlet flow (203) is sealed and connected with the end surface of the orifice plate fixture (1) through the sealing ring (104) on the orifice plate fixture; the water inlet leakage hole (202) is connected with the water inlet fixture matching hole (201) and the outer side surface of the water outlet fixture (2); The water outlet fixture (3) is provided with a water outlet flow channel (303) inside, and the upper pressing end surface of the water outlet fixture (2) is provided with a water outlet fixture matching hole (301) and a water outlet leakage hole (302). The water outlet fixture matching hole (301) and the lower pressing ring (103) cooperate with each other to achieve the leakage of residual liquid when the orifice plate fixture (1) and the water outlet fixture (3) are assembled and separated; the water outlet flow (303) is sealed and connected with the end surface of the orifice plate fixture (1) through the lower sealing ring (105); the water outlet leakage hole (302) is connected with the water outlet fixture matching hole (301) and the outer side surface of the water inlet fixture (3); The test cabinet (17) comprises an upper drive motor protection cover (14), a water entry tooling protection cover (13), a water outlet tooling protection cover (15), a lower drive motor protection cover (16), a fixed back plate (11), and a track (12); the rib plate seat of the fixed back plate (11) is installed on the table of the test cabinet (17), and the front end surface of the fixed back plate (11) is installed with the upper drive motor protection cover (14), the water entry tooling protection cover (13), the water outlet tooling protection cover (15) and the lower drive motor protection cover (16); The upper clamping mechanism (18) comprises an upper driving motor (181), an upper coupling (182), an upper fixed bearing pair (183), an upper motion assembly (184), an upper screw shaft (185), an upper contact sensor (186), an upper limit stopper (187), an upper screw connector (188), a water entry water shield (4), and a water entry tool fixing pair (7); the upper driving motor (181) is mounted on the upper end of the fixed back plate (11), connected to the upper screw shaft (185) through the upper coupling (182), upper fixed bearing pairs (183) are mounted on both ends of the upper screw shaft (185), the upper fixed bearing pair (183) is mounted on the front end surface of the fixed back plate (11), the track (12) is mounted on the front end surface of the fixed back plate (11), and both ends of the upper motion assembly (184) are connected to the track (12) through sliders; The water entry tooling (2) is bolted to the water entry water shield (4); the body of the water entry tooling (2) is fixedly connected via a water entry tooling fixing pair (7), and the water entry tooling fixing pair (7) is connected to an upper movement component (184); an upper screw rod connector (188) and an upper limit stopper (187) are installed on the inner side panel of the upper movement component (184); the upper movement component (184) is connected to an upper screw rod shaft (185) via the upper screw rod connector (188); an upper limit stopper (187) is installed inside the upper movement component (184), and the movement of the upper movement component (184) is limited by an upper contact sensor (186); The lower clamping mechanism (19) comprises a lower driving motor (191), a lower coupling (192), a lower fixed bearing pair (193), a lower motion assembly (194), a lower screw shaft (195), a lower contact sensor (196), a lower limit baffle (197), a lower screw connector (198), a water outlet water shield (5), a sealing gasket (6), and a water outlet fixture fixing pair (9); the lower driving motor (191) is mounted on the lower end of the fixed back plate (11), connected to the lower screw shaft (195) through the lower coupling (192), lower fixed bearing pairs (193) are mounted at both ends of the lower screw shaft (195), the lower fixed bearing pair (193) is mounted on the front end surface of the fixed back plate (11), and both ends of the lower motion assembly (194) are connected to the track (12) through sliders; A sealing gasket (6) is installed between the water outlet tooling (3) and the water outlet water shield (5); the body of the water outlet tooling (3) is fixedly connected via a water outlet tooling fixing pair (9), and the water outlet tooling fixing pair (9) is connected to a lower motion component (194); a lower screw connector (198) and a lower limit baffle (197) are installed on the inner side panel of the lower motion component (194); the lower motion component (194) is connected to a lower screw shaft (195) via a screw connector (198); a lower limit baffle (197) is provided inside the lower motion component (194), and movement of the lower motion component (194) is limited via a lower contact sensor (196).

2. The micro-sized orifice plate test fixture quick clamping device according to claim 1 is characterized in that: A clamping and positioning groove (107) is provided on the side of the orifice plate fixture (1), and the orifice plate (106) and the orifice plate fixture (1) can be transported by means of a clamping device.

3. The micro-sized orifice plate test fixture quick clamping device according to claim 1 is characterized in that: The upper clamping ring (102) and the tooling block (101) are fastened with bolts to achieve the connection between the sealing ring (104) on the orifice plate tooling and the orifice plate tooling (1).

4. The micro-sized orifice plate test fixture quick clamping device according to claim 1 is characterized in that: The lower clamping ring (103) and the tooling block (101) are fastened with bolts to achieve the connection between the lower sealing ring (105) and the orifice plate tooling (1).

5. The micro-sized orifice plate test fixture quick clamping device according to claim 1 is characterized in that: The upper driving motor (181) is used to drive the upper moving component to move in an up-and-down translational manner.

6. The micro-sized orifice plate test fixture quick clamping device according to claim 1 is characterized in that: The lower driving motor (191) is used to drive the lower moving component to move in an up-and-down translational manner.

7. The micro-sized orifice plate test fixture quick clamping device according to claim 1 is characterized in that: The water outlet tooling (3) is connected to the water outlet water retaining cover (5) via bolts.

8. The micro-sized orifice plate test fixture quick clamping device according to claim 1 is characterized in that: The orifice plate fixture (1) is tightly connected to the water inlet fixture (2) and the water outlet fixture (3) by means of a motor-driven compression connection.

9. The micro-sized orifice plate test fixture quick clamping device according to claim 1, characterized in that: When the upper clamping mechanism (18) and the lower clamping mechanism (19) are disconnected from the orifice plate fixture (1), liquid splashing will not occur.

10. The micro-sized orifice plate test fixture quick clamping device according to claim 1, characterized in that: The orifice plate fixture (1), the water outlet fixture (3) and the water inlet fixture (2) are all provided with concave and convex butt joint surfaces.

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