Ultralow temperature valve pressure test tool

Abstract

The utility model relates to the technical field of valve pressure testing, and provides an ultralow-temperature valve pressure testing tool which comprises a base and a fixing plate fixedly installed on one side of the top of the base, a hollowed-out groove is formed in the bottom of the base, and a groove is formed in one end face of the fixing plate. The sealing plate I is fixedly mounted on one side surface of the fixing plate; the two adjusting frames are symmetrically connected into the groove in a sliding mode, and the adjusting frames are movably adjusted through a first driving mechanism arranged in the groove. The first motor drives the two-way screw rod to rotate, so that the two adjusting frames relatively slide to be close to or away from each other in the groove, the adjusting frames slide along the surface of the fixing frame, meanwhile, the adjusting frames drive the connecting blocks to slide in the fixing frame to adjust the position, and therefore the effect of adjusting the distance between the adjusting frames is achieved; the device is convenient to adapt to low-temperature valves of different sizes, and the application flexibility of pressure testing work is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of valve pressure testing technology, specifically to a cryogenic valve pressure testing fixture. Background Technology

[0002] Cryogenic valves refer to valves whose medium temperature is between -40℃ and -196℃. Common cryogenic valves include cryogenic butterfly valves, cryogenic gate valves, cryogenic ball valves, cryogenic stop valves, cryogenic check valves, and cryogenic throttle valves.

[0003] For example, CN217765857U discloses a plastic valve pressure testing device. Its background technology addresses the problems that "existing plastic valve pressure testing devices are often cumbersome to fix valves, making batch testing difficult; the sealing between the existing plastic valve pressure testing device and the valve is not high, leading to leakage during the pressure test and affecting the test data." To address this, the technical solution is described as "including a fixed base, with slots on both the front and rear of the outer surface of the fixed base; two first-generation support legs fixedly connected to the lower part of the outer surface of the fixed base; a handle fixedly connected to the left end of the fixed base; and a second-generation sealing plate fixedly connected to the right end of the fixed base."

[0004] However, in implementing the relevant technology, the following problems were found: it is not convenient to adjust the spacing between the regulating plates according to the different sizes of cryogenic valves. The spacing between the two regulating plates in the above scheme is fixed, which easily leads to a low range of applicability and certain limitations in use. In addition, the above scheme requires frequent manual rotation of the screw to drive the sealing plate to contact the valve, which is cumbersome and time-consuming, thus reducing the flexibility and efficiency of the pressure test. Therefore, a cryogenic valve pressure test fixture is proposed. Utility Model Content

[0005] This utility model proposes a cryogenic valve pressure testing fixture, which solves the problems in related technologies such as the inconvenience of adjusting the spacing between the regulating plates according to cryogenic valves of different sizes, and the need to manually rotate the screw to drive the sealing plate to seal with the valve, which is cumbersome and time-consuming.

[0006] The technical solution of this utility model is as follows: A cryogenic valve pressure testing fixture, comprising:

[0007] The base is fixedly installed on one side of its top. The bottom of the base has a hollow groove, and one end face of the fixed plate has a groove.

[0008] A sealing plate is fixedly installed on one side of the fixing plate;

[0009] Two adjusting frames are symmetrically slidably connected within the groove, and the adjusting frames are moved and adjusted by a drive mechanism located within the groove;

[0010] a sealing plate two arranged between the two adjusting frames;

[0011] two fixed frames symmetrically fixed on the surface of the sealing plate two and slidingly matched with the adjusting frames;

[0012] a connecting block slidingly clamped in the two fixed frames, the connecting block being moved and adjusted by a driving mechanism two arranged in the adjusting frames;

[0013] and a lifting mechanism arranged on the base for supporting the valve.

[0014] Optionally, the driving mechanism one comprises:

[0015] a bidirectional screw rod rotatably connected between the two sides of the inner wall of the groove, the two adjusting frames being threadedly connected with the bidirectional screw rod;

[0016] and a motor one fixed on the surface of the fixed plate, an output end of the motor one being movably inserted into the groove and connected with the bidirectional screw rod.

[0017] Optionally, the driving mechanism two comprises:

[0018] a lead screw rotatably connected between the two sides of the inner wall of one of the adjusting frames, one of the connecting blocks being threadedly connected with the lead screw;

[0019] a guide rod fixed between the two sides of the inner wall of the other adjusting frame, the other connecting block being slidingly connected with the guide rod;

[0020] and a motor two fixed on one end surface of one of the adjusting frames, an output end of the motor two being movably inserted into the adjusting frame and connected with the lead screw.

[0021] Optionally, the top of the base is fixed with two fixed rods through two groups of base blocks, the surface of the fixed rod being slidingly connected with a movable seat.

[0022] Optionally, the lifting mechanism comprises:

[0023] a plurality of electric push rods one fixed on the bottom of the movable seat, an output end of the electric push rod one being movably inserted through the movable seat;

[0024] and a supporting seat fixedly connected with the output end of the electric push rod one, a V-shaped groove being formed in the top of the supporting seat.

[0025] Optionally, the lifting mechanism further comprises:

[0026] two fixed blocks symmetrically fixed on the top of the supporting seat;

[0027] an electric push rod two fixed on one side surface of the fixed block, an output end of the electric push rod two being movably inserted through the fixed block;

[0028] And the arc-shaped clamping plate fixedly connected with the second output end of the electric push rod.

[0029] Optionally, the surface of the two fixed rods is also slidably connected with a support frame, and the support frame is connected with the second sealing plate.

[0030] Optionally, one end surface of the second sealing plate is fixedly provided with a connecting pipe in communication with the second sealing plate, one end of the connecting pipe is fixedly connected with an injection hose, and the surface of the connecting pipe is fixedly provided with a pressure gauge.

[0031] The working principle and beneficial effects of the utility model are as follows:

[0032] I. The two adjusting frames are relatively slidably close to or away from the groove by the rotation of the motor one bidirectional screw, the adjusting frame is slid along the surface of the fixed frame, the connecting block is slid in the fixed frame to adjust the position by the adjusting frame, so that the interval between the adjusting frames is adjusted, different sizes of low-temperature valves are adapted, the interval between the adjusting frames is fixed, the use limitation is avoided, and the application flexibility of the pressure test work is effectively improved.

[0033] II. The fixed frame is moved along the adjusting frame by the rotation of the motor two screw rod, the connecting block on one side is slid along the surface of the guide rod, the second sealing plate is moved by the cooperation of the connecting block and the fixed frame, so that the second sealing plate is automatically moved, the operation is simple and convenient, the operation time of the personnel rotating the screw rod is reduced, and the efficiency of the pressure test work is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0035] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model;

[0036] Figure 2 It is the local three-dimensional structure schematic diagram of the second sealing plate of the utility model;

[0037] Figure 3 It is the local three-dimensional structure schematic diagram of the fixed plate of the utility model;

[0038] Figure 4 It is the local three-dimensional structure schematic diagram of the movable seat of the utility model.

[0039] In the drawing: 1, base; 2, fixed plate; 3, first sealing plate;

[0040] 4, drive mechanism one; 41, bidirectional screw; 42, motor one;

[0041] 5, adjusting frame; 6, sealing plate two; 7, fixed frame; 8, connecting block;

[0042] 9, driving mechanism two; 91, screw rod; 92, guide rod; 93, motor two;

[0043] 10, fixed rod; 11, movable seat; 12, support frame;

[0044] 13, lifting mechanism; 131, electric push rod one; 132, supporting seat; 133, fixed block; 134, electric push rod two; 135, arc clamping plate;

[0045] 14, connecting pipe; 15, injection hose; 16, pressure gauge. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the present application.

[0047] EMBODIMENT

[0048] Please refer to Figure 1 - Figure 4 The technical solutions of the present application are as follows: an ultralow-temperature valve pressure test tool, comprising:

[0049] A base 1 and a fixed plate 2 fixedly installed on one side of the top of the base 1, a hollow groove is formed in the bottom of the base 1, and a groove is formed in one end face of the fixed plate 2;

[0050] A sealing plate one 3 fixedly installed on one side face of the fixed plate 2;

[0051] Two adjusting frames 5 symmetrically and slidingly connected in the groove, the adjusting frames 5 are moved and adjusted by a driving mechanism one 4 arranged in the groove;

[0052] A sealing plate two 6 arranged between the two adjusting frames 5;

[0053] Two fixed frames 7 symmetrically and fixedly installed on the surface of the sealing plate two 6 and slidingly matched with the adjusting frames 5;

[0054] A connecting block 8 slidingly connected in the two fixed frames 7, the connecting block 8 is moved and adjusted by a driving mechanism two 9 arranged in the adjusting frame 5;

[0055] And a lifting mechanism 13 arranged on the base 1 and used for supporting the valve.

[0056] The driving mechanism 4 comprises:

[0057] The bidirectional screw 41 is rotatably connected between the two sides of the inner wall of the groove, and the two adjusting frames 5 are threadedly connected with the bidirectional screw 41.

[0058] The motor 42 is fixedly installed on the surface of the fixed plate 2, and the output end of the motor 42 is movably inserted into the groove and connected with the bidirectional screw 41.

[0059] The driving mechanism 9 comprises:

[0060] The screw rod 91 is rotatably connected between the two sides of the inner wall of the adjusting frame 5, and the connecting block 8 is threadedly connected with the screw rod 91.

[0061] The guide rod 92 is fixedly installed between the two sides of the inner wall of the other adjusting frame 5, and the other connecting block 8 is slidably connected with the guide rod 92.

[0062] The motor 93 is fixedly installed on one end surface of the adjusting frame 5, and the output end of the motor 93 is movably inserted into the adjusting frame 5 and connected with the screw rod 91.

[0063] The technical scheme provided by the embodiment is as follows: when in use, the lifting mechanism 13 supports and lifts the low-temperature valve, and adjusts the height position of the low-temperature valve according to the size of the low-temperature valve, so that the low-temperature valve is aligned with the sealing plate 1 and the sealing plate 2, then the bidirectional screw 41 is driven to rotate by the motor 42 according to the size of the low-temperature valve body, so that the two adjusting frames 5 relatively slide close to or away from each other in the groove, and the adjusting frame 5 slides along the surface of the fixed frame 7, and the connecting block 8 slides in the fixed frame 7 to adjust the position, so that the interval between the adjusting frames 5 is adjusted, which is convenient for adapting to low-temperature valves of different sizes, avoids the use limitation of the fixed interval between the adjusting frames 5, effectively improves the application flexibility of the pressure test work, and after the adjusting frames 5 are adjusted, the screw rod 92 is driven to rotate by the motor 93, the connecting block 8 on one side drives the fixed frame 7 to move along the adjusting frame 5, and the connecting block 8 on the other side slides along the surface of the guide rod 91, so that the sealing plate 2 is driven to move and contact the low-temperature valve by the cooperation of the connecting block 8 and the fixed frame 7, so that the effect of automatically driving the sealing plate 2 to move is realized, which is simple and convenient to operate, and is convenient for reducing the operation time of rotating the screw rod by personnel, effectively improving the efficiency of the pressure test work. When the sealing plate 2 contacts the low-temperature valve, the sealing plate 2 continues to move until the two ends of the low-temperature valve are in close contact with the sealing plate 1 and the sealing plate 2.

[0064] Further, the top of the base 1 is fixedly installed with two fixed rods 10 through two groups of base blocks, and the surface of the fixed rod 10 is slidably connected with a movable seat 11.

[0065] Specifically, when the low-temperature valve moves, the lifting mechanism 13 can drive the movable seat 11 to move along the surface of the fixed rod 10 synchronously, so as to improve the movement stability of the low-temperature valve and prevent deviation from affecting the pressure test effect.

[0066] Further, the lifting mechanism 13 comprises:

[0067] A plurality of electric push rods I 131 are fixedly installed at the bottom of the movable seat 11, and the output ends of the electric push rods I 131 movably pass through the movable seat 11;

[0068] and a supporting seat 132 fixedly connected to the output ends of the electric push rods I 131, and a V-shaped groove is formed at the top of the supporting seat 132.

[0069] The lifting mechanism 13 further comprises:

[0070] Two fixed blocks 133 are symmetrically fixedly installed at the top of the supporting seat 132;

[0071] An electric push rod II 134 is fixedly installed at one side surface of the fixed block 133, and the output end of the electric push rod II 134 movably passes through the fixed block 133;

[0072] and an arc-shaped clamping plate 135 fixedly connected to the output end of the electric push rod II 134.

[0073] Specifically, after the low-temperature valve is placed on the supporting seat 132, the arc-shaped clamping plate 135 is driven by the electric push rod II 134 to contact the valve body, so as to clamp and fix the valve body and prevent the valve body from moving accidentally. Then, the supporting seat 132 is driven by the electric push rod I 131 to move upward to adjust the height position, so as to facilitate the valve body to be aligned with the sealing plate I 3 and the sealing plate II 6, so that the sealing plate I 3 and the sealing plate II 6 are contacted. When the sealing plate II 6 moves to contact the valve body, the valve body is driven to move, so that the movable seat 11 moves along the surface of the fixed rod 10 synchronously, so as to ensure the stability of the valve body movement until the other end of the valve body is tightly contacted with the sealing plate I 3.

[0074] Further, the surfaces of the two fixed rods 10 are slidably connected with a supporting frame 12, and the supporting frame 12 is connected with the sealing plate II 6.

[0075] Specifically, the supporting frame 12 can support the sealing plate II 6 to ensure the force balance of the sealing plate II 6, and can drive the supporting frame 12 to slide along the surface of the fixed rod 10 during the movement of the sealing plate II 6, so as to improve the movement stability of the sealing plate II 6.

[0076] Further, one end surface of the sealing plate II 6 is fixedly installed with a connecting pipe 14, the connecting pipe 14 is connected with the sealing plate II 6 in communication, one end of the connecting pipe 14 is fixedly connected with an injection hose 15, and a pressure gauge 16 is fixedly installed on the surface of the connecting pipe 14.

[0077] Specifically: the low temperature valve is clamped by the second sealing plate 6 and the first sealing plate 3, liquid is injected into the low temperature valve through the connecting pipe 14 by connecting the injection hose 15 and the external liquid pipe, the pressure test is achieved by observing whether the valve body leaks, and meanwhile, the pressure in the connecting pipe 14 can be observed through the pressure gauge 16.

[0078] Finally, it should be noted that the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. An ultra-low temperature valve pressure testing tool, comprising: Include: The base (1) and the fixed plate (2) fixedly installed on one side of the top of the base (1), the bottom of the base (1) is provided with a hollow groove, one end surface of the fixed plate (2) is provided with a groove; The sealing plate one (3) is fixedly installed on one side surface of the fixed plate (2); Two adjusting frames (5) are symmetrically and slidingly connected in the groove, the adjusting frame (5) is moved and adjusted by the driving mechanism one (4) arranged in the groove; The sealing plate two (6) is arranged between the two adjusting frames (5); Two fixed frames (7) are symmetrically and fixedly installed on the surface of the sealing plate two (6) and slidingly matched with the adjusting frame (5); The connecting block (8) is slidingly connected in the two fixed frames (7), and the connecting block (8) is moved and adjusted by the driving mechanism two (9) arranged in the adjusting frame (5); And the lifting mechanism (13) arranged on the base (1) is used for supporting the valve.

2. The ultra-low temperature valve pressure testing tool of claim 1, wherein, The driving mechanism one (4) comprises: The bidirectional screw rod (41) is rotatably connected between the two sides of the inner wall of the groove, the two adjusting frames (5) are threadedly connected with the bidirectional screw rod (41); And the motor one (42) is fixedly installed on the surface of the fixed plate (2), the output end of the motor one (42) is movably inserted into the groove and connected with the bidirectional screw rod (41).

3. The ultra-low temperature valve pressure testing tool of claim 2, wherein, The driving mechanism two (9) comprises: The lead screw (91) is rotatably connected between the two sides of the inner wall of one adjusting frame (5), one connecting block (8) is threadedly connected with the lead screw (91); The guide rod (92) is fixedly installed between the two sides of the inner wall of the other adjusting frame (5), the other connecting block (8) is slidingly connected with the guide rod (92); And the motor two (93) is fixedly installed on one end surface of one adjusting frame (5), the output end of the motor two (93) is movably inserted into the adjusting frame (5) and connected with the lead screw (91).

4. The ultra-low temperature valve pressure testing tool of claim 1, wherein, The top of the base (1) is fixedly installed with two fixed rods (10) through two groups of base blocks, the surface of the fixed rod (10) is slidingly connected with a movable seat (11).

5. The ultra-low temperature valve pressure testing tool of claim 4, wherein, The lifting mechanism (13) comprises: A plurality of electric push rods one (131) are fixedly installed on the bottom of the movable seat (11), the output end of the electric push rod one (131) is movably inserted through the movable seat (11); And the supporting seat (132) is fixedly connected to the output end of the electric push rod one (131), and the top of the supporting seat (132) is provided with a V-shaped groove.

6. The ultra-low temperature valve pressure testing tool of claim 5, wherein, The lifting mechanism (13) further comprises: Two fixed blocks (133) are symmetrically and fixedly installed on the top of the supporting seat (132); The electric push rod two (134) is fixedly installed on one side surface of the fixed block (133), and the output end of the electric push rod two (134) is movably inserted through the fixed block (133); And the arc-shaped clamping plate (135) is fixedly connected to the output end of the electric push rod two (134).

7. The ultra-low temperature valve pressure testing tool of claim 4, wherein, The surface of the two fixed rods (10) is also slidingly connected with a support frame (12), and the support frame (12) is connected between the sealing plate two (6).

8. The ultra-low temperature valve pressure testing tool of claim 1, wherein, One end surface of the sealing plate two (6) is fixedly provided with a connecting pipe (14), the connecting pipe (14) and the sealing plate two (6) are communicated, one end of the connecting pipe (14) is fixedly connected with an injection hose (15), the surface of the connecting pipe (14) is fixedly provided with a pressure gauge (16).

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