LNG (Liquefied Natural Gas) valve low-temperature test clamping device

Abstract

The utility model discloses a clamping device for a low-temperature test of an LNG (Liquefied Natural Gas) valve. The clamping device comprises a base, a valve clamping structure, a driving structure and a locking structure, by arranging the valve clamping structure, the flange end of the valve is placed on the two inclined supporting seats on the adjusting seats, so that the flange end of the valve can be supported and lifted through the two inclined supporting seats, then the two adjusting seats can be driven to be close to each other through the driving structure, and the inclined supporting seats on the two adjusting seats can be driven to be close to each other; therefore, the flange end of the valve can be clamped between the clamping plates on the inclined supporting seats on the two adjusting seats, the valve can be clamped and fixed, and the size of a V-shaped containing groove formed by the two inclined supporting seats can be changed by changing the distance between the two inclined supporting seats on the adjusting seats. Therefore, valve flange ends of different sizes can be placed and lifted, and then valves of different sizes can be clamped and fixed by changing the distance between the two adjusting bases and the distance between the two inclined supporting bases.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve low temperature test field especially, relate to a LNG valve low temperature test clamping device. BACKGROUND

[0002] In LNG valve low temperature test, clamping the valve can ensure that the valve remains stable during the test process, avoids moving or loosening due to temperature change or pressure fluctuation, so as to influence the accuracy of test results. Clamping can also prevent the valve from accidental falling or damage during the test process, ensuring the safety of the test process.

[0003] China authorized announcement No. CN214471729U discloses a kind of with lengthened connecting pipe LNG valve low temperature test clamping device. A kind of with lengthened connecting pipe LNG valve low temperature test clamping device, including installation bottom plate, support plate I and support plate II are arranged in parallel on installation bottom plate, left jaw is arranged on support plate I, right jaw is arranged on support plate II, respectively in left jaw top and right jaw Setting lifting ring. The remarkable effect of the new model is: a kind of with lengthened connecting pipe LNG valve low temperature test clamping device, the clamping and efficiency problem of with lengthened connecting pipe LNG valve under-196 ℃ low temperature working condition when carrying out performance test is well solved by the clamping device, reasonable in design, simple structure, reliable under low temperature.

[0004] But the device has the following defects when using: although the device can clamp LNG valve, LNG valve will have different sizes when carrying out low temperature test, and the device cannot satisfy clamping LNG valve of different sizes. In view of the above defects: for this we propose a kind of LNG valve low temperature test clamping device. Utility model content

[0005] The utility model aims at solving the shortcomings in the prior art and provides a LNG valve low temperature test clamping device.

[0006] In order to solve the problems existing in the prior art, the utility model adopts the following technical scheme: a LNG valve low temperature test clamping device, comprising:

[0007] The base comprises a first base, a second base, a guide rod fixedly installed on the opposite surface of the first base and the second base, and a lifting ring fixedly installed on the upper surface of the first base and the second base, respectively.

[0008] The valve clamping structure comprises two adjusting seats, an inclined support seat slidably installed on the upper surface of the two adjusting seats, and a clamping plate fixedly installed on the inclined surface of the inclined support seat.

[0009] A driving structure is arranged on the opposite faces of the first base and the second base, and is used to adjust the distance between the two adjusting bases;

[0010] A locking structure is arranged between the inclined supporting base and the adjusting base, and is used to lock the inclined supporting base.

[0011] Preferably, the driving structure comprises a threaded column rotatably arranged on the opposite faces of the first base and the second base, and two nut bases respectively threadedly connected on the surface of the threaded column, and the upper surfaces of the two nut bases are respectively fixedly connected with the lower surfaces of the two adjusting bases.

[0012] Preferably, the surface of the threaded column is provided with two sections of threads, and the rotation directions of the two sections of threads are opposite.

[0013] Preferably, the left end of the threaded column extends to the left end of the first base, and is provided with a knob.

[0014] Preferably, the surface of the guide rod is slidingly connected with a guide block, and the upper surface of the guide block is fixedly connected with the lower surface of the adjusting base.

[0015] Preferably, the locking structure comprises a locking bolt threadedly connected on the surface of the inclined supporting base, and the threaded end of the locking bolt extends to the inside of the inclined supporting base.

[0016] Preferably, the inner wall of the inclined supporting base is fixedly arranged with a limiting block, and the upper surface of the adjusting base is equidistantly provided with a plurality of limiting grooves matched with the limiting block.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The flange end of the valve is placed on the two inclined supporting bases on the adjusting base through the valve clamping structure, so that the two inclined supporting bases can support and lift the flange end of the valve, the driving structure can drive the two adjusting bases to approach each other, the inclined supporting bases on the two adjusting bases can approach each other, the flange end of the valve can be clamped between the clamping plates on the two groups of inclined supporting bases, the valve can be clamped and fixed, the distance between the two inclined supporting bases on the adjusting base can be changed, the size of the V-shaped placing groove formed by the two inclined supporting bases can be changed, the valve flange end of different sizes can be placed and lifted, and the valve of different sizes can be clamped and fixed by changing the distance between the two adjusting bases and the two inclined supporting bases.

[0019] 2. The limiting block is inserted into the limiting groove when the inclined supporting base is placed on the adjusting base, the limiting block and the limiting groove can be matched to limit the inclined supporting base, the locking bolt is tightened, the inclined supporting base can be fixed on the adjusting base, and the stability of the inclined supporting base is improved. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an undue limitation. In the drawings:

[0021] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 This is a three-dimensional schematic diagram of the base of this utility model;

[0023] Figure 3 This is a three-dimensional schematic diagram of the inclined support base of this utility model;

[0024] Figure 4 This is a three-dimensional schematic diagram of the adjustment seat of this utility model.

[0025] The numbers in the diagram are: 10 First base, 11 Second base, 12 Guide rod, 13 Lifting ring, 20 Adjusting seat, 21 Inclined support seat, 22 Clamping plate, 30 Threaded column, 31 Nut seat, 32 Knob, 40 Guide block, 50 Locking bolt, 60 Limiting block, 61 Limiting groove. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Please see Figures 1-4 This utility model provides a technical solution: a clamping device for cryogenic testing of LNG valves, comprising: a base, a valve clamping structure, a driving structure, and a locking structure.

[0028] See Figure 2 The base includes a first base 10 and a second base 11, a guide rod 12 fixedly installed on the opposite side of the first base 10 and the second base 11, and a lifting ring 13 fixedly installed on the upper surface of the first base 10 and the second base 11 respectively. The guide rod 12 can be used to connect the first base 10 and the second base 11 into one unit, and the lifting ring 13 can be used to lift the base.

[0029] See Figure 1 The valve clamping structure includes two adjusting seats 20, inclined support seats 21 that are slidably mounted on the upper surfaces of the two adjusting seats 20 respectively, and a clamping plate 22 that is fixedly mounted on the inclined support seat 21. The two inclined support seats 21 can form a V-shaped placement groove, which can be used to place the flange end of the valve.

[0030] See Figure 3 and Figure 4The locking structure is arranged between the inclined support seat 21 and the adjusting seat 20, and is used for locking the inclined support seat 21. The locking structure comprises a locking bolt 50 which is threadedly connected to the surface of the inclined support seat 21, and the threaded end of the locking bolt 50 extends to the inside of the inclined support seat 21. The inner wall of the inclined support seat 21 is fixedly installed with a limiting block 60. The upper surface of the adjusting seat 20 is equally provided with a plurality of limiting grooves 61 which are matched with the limiting block 60.

[0031] When the inclined support seat 21 is placed on the adjusting seat 20, the limiting block 60 is inserted into the limiting groove 61, so that the inclined support seat 21 is limited by the cooperation of the limiting block 60 and the limiting groove 61. Then, the locking bolt 50 is tightened, so that the inclined support seat 21 is firmly fixed on the adjusting seat 20, thereby improving the stability of the inclined support seat 21.

[0032] Referring to Figure 1 and Figure 2 The driving structure is arranged on the opposite surfaces of the first base 10 and the second base 11, and is used for adjusting the distance between the two adjusting seats 20. The driving structure comprises a threaded column 30 which is rotatably installed on the opposite surfaces of the first base 10 and the second base 11, and two nut seats 31 which are respectively threadedly connected to the surface of the threaded column 30. The upper surfaces of the two nut seats 31 are respectively fixedly connected with the lower surfaces of the two adjusting seats 20. The surface of the threaded column 30 is provided with two sections of threads, and the rotation directions of the two sections of threads are opposite. The left end of the threaded column 30 extends to the left end of the first base 10, and is provided with a knob 32. The threaded column 30 is driven to rotate by rotating the knob 32. The two nut seats 31 are driven to move close to or away from each other by the screw transmission of the threaded column 30 and the nut seats 31.

[0033] The surface of the guide rod 12 is slidably connected with a guide block 40. The upper surface of the guide block 40 is fixedly connected with the lower surface of the adjusting seat 20. The movement track of the adjusting seat 20 is guided by the cooperation of the guide block 40 and the guide rod 12.

[0034] The flange end of the valve is placed on the two inclined support seats 21 on the adjusting seat 20, so that the flange end of the valve is supported and lifted by the two inclined support seats 21. Then, the two adjusting seats 20 are driven to move close to each other by the driving structure, so that the inclined support seats 21 on the two adjusting seats 20 are driven to move close to each other. Therefore, the flange end of the valve can be clamped between the two groups of clamping plates 22 on the two inclined support seats 21, so that the valve is clamped and fixed. The distance between the two inclined support seats 21 on the adjusting seat 20 is changed, so that the size of the V-shaped placing groove formed by the two inclined support seats 21 is changed. Therefore, the valve flange ends of different sizes can be placed and lifted. The valve of different sizes can be clamped and fixed by changing the distance between the two adjusting seats 20 and the two inclined support seats 21.

[0035] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any person skilled in the art should be covered in the protection scope of the present application according to the technical scheme and concept of the present application to make equivalent replacement or change.

Claims

1. A clamping device for cryogenic testing of LNG valves, characterized in that... ,include: The base includes a first base (10), a second base (11), a guide rod (12) fixedly installed on the opposite sides of the first base (10) and the second base (11), and a lifting ring (13) fixedly installed on the upper surfaces of the first base (10) and the second base (11). The valve clamping structure includes two adjusting seats (20), inclined support seats (21) that are slidably installed on the upper surfaces of the two adjusting seats (20), and a clamping plate (22) that is fixedly installed on the inclined support seat (21). A driving structure is provided on the opposite surfaces of the first base (10) and the second base (11) for adjusting the distance between the two adjusting seats (20); A locking structure is provided between the inclined support seat (21) and the adjusting seat (20) for locking the inclined support seat (21).

2. The LNG valve cryogenic test clamping device according to claim 1, characterized in that: The drive structure includes a threaded column (30) rotatably mounted on the opposite surfaces of the first base (10) and the second base (11), and two nut seats (31) threadedly connected to the surface of the threaded column (30), with the upper surfaces of the two nut seats (31) fixedly connected to the lower surfaces of the two adjusting seats (20).

3. The LNG valve cryogenic test clamping device according to claim 2, characterized in that: The surface of the threaded column (30) is provided with two threads, and the two threads rotate in opposite directions.

4. The LNG valve cryogenic test clamping device according to claim 2, characterized in that: The left end of the threaded post (30) extends to the left end of the first base (10) and is provided with a knob (32).

5. The LNG valve cryogenic test clamping device according to claim 1, characterized in that: The guide rod (12) is slidably connected to a guide block (40), and the upper surface of the guide block (40) is fixedly connected to the lower surface of the adjusting seat (20).

6. The LNG valve cryogenic test clamping device according to claim 1, characterized in that: The locking structure includes a locking bolt (50) threaded onto the surface of the inclined support (21), and the threaded end of the locking bolt (50) extends into the interior of the inclined support (21).

7. The LNG valve cryogenic test clamping device according to claim 1, characterized in that: The inner wall of the inclined support (21) is fixedly installed with a limiting block (60), and the upper surface of the adjusting seat (20) is provided with a plurality of limiting grooves (61) that are adapted to the limiting block (60).

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