Device for switching airtight meter rod of solid rocket engine

Abstract

The utility model relates to the technical field of solid rocket engine airtight meter rod conversion devices, in particular to a solid rocket engine airtight meter rod conversion device which comprises a meter rod, a second pipe body is in threaded connection with the lower portion of the outer wall of the meter rod, and a first pipe body is in clearance fit with the inner wall of one end of the second pipe body. A circular plate is fixedly connected to one side of the outer wall of the first pipe body. Through cooperation of a first pipe body, a second pipe body, an annular plate, a vertical block, a straight cylinder and a conversion structure, the first pipe body is rotated, the first pipe body rotates on the inner wall of the second pipe body, then the angle of the pressure gauge is adjusted, a threaded rod is rotated, the threaded rod drives a square rod to move rightwards, the square rod drives a clamping plate to move rightwards, and the clamping plate and the second pipe body clamp a circular plate. And meanwhile, the rubber ring, the rubber sleeve and the rubber pad play a multiple sealing role together, multiple sealing can be conveniently conducted on the connecting position, and the situation that leakage occurs when the sealing structure is damaged due to multiple times of angle conversion is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of devices for converting airtight gauge rods of solid rocket engines, in particular to a device for converting airtight gauge rods of solid rocket engines. Background Art

[0002] The combustion chamber of aerospace-type solid rocket engines needs to be horizontally docked with the front and rear segmented combustion chambers, among which combustion chamber docking is a key process. The docking airtightness test is the main basis for inspecting the docking operation. Therefore, the accurate value of the airtightness test at the docking part is crucial in the result judgment.

[0003] The existing solid rocket engine airtight gauge rod conversion device (application number: 202323521535.7) meets the multi-angle adjustment requirements of the pressure gauge and avoids the situation where the pressure gauge position and posture cause inaccurate readings. The above-mentioned problem still exists. When using the airtight gauge rod, the airtight gauge rod will be connected to the external pressure gauge. By observing the pressure gauge, the airtight situation can be understood. The above-mentioned device can adjust the angle of the pressure gauge by setting a conversion joint and a fine-tuning adapter, which is convenient for the staff to observe the pressure gauge. However, when adjusting the angle of the pressure gauge, there will be a certain friction between the two connected tube bodies. In order to ensure the sealing effect, a sealing structure will be set between the two tube bodies, which is not convenient for multiple sealing of the connection position. When the sealing structure is damaged due to multiple angle conversions, leakage is likely to occur. When the gauge rod and the pressure gauge are installed, it is not convenient to limit the sealing ring, which can easily cause the sealing ring to shift and affect the sealing effect. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings in the prior art that it is inconvenient to perform multiple seals on the connection positions, which may lead to leakage when the sealing structure is damaged due to multiple angle changes, and it is inconvenient to limit the sealing ring, which may easily cause the sealing ring to shift and affect the sealing effect. A device for converting the airtight gauge rod of a solid rocket engine is proposed.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for converting an airtight gauge rod of a solid rocket engine is designed, comprising a gauge rod, a tube body 2 is threadedly connected to the lower portion of the outer wall of the gauge rod, a tube body 1 is gap-fitted with the inner wall of one end of the tube body 2, a circular plate is fixedly connected to one side of the outer wall of the tube body 1, a vertical block is fixedly connected to one side of the outer wall of the tube body 2, a straight tube is fixedly connected to the inner wall of the vertical block, an annular plate is fixedly connected to one side of the inner wall of the tube body 2, and a conversion structure is provided on one side of the straight tube.

[0007] Preferably, the conversion structure includes a square rod, one side of the outer wall of the square rod is clearance-matched with the inner wall of one end of the straight tube, one end of the square rod is rotatably connected to a threaded rod through a bearing, one side of the outer wall of the threaded rod is threadedly connected to the inner wall of the other end of the straight tube, and the other end of the square rod is fixedly connected to a clamping plate, one side of the clamping plate is provided with a rubber pad 1, one end of the rubber pad 1 is fixedly connected to one end of a circular plate, and the other end of the rubber pad 1 is fit with one end of a tube body 2, one side of the rubber pad 1 is provided with a rubber sleeve, the outer wall of the rubber sleeve is fixedly connected to the inner wall of one end of the tube body 2, the inner wall of the rubber sleeve is fit with one side of the outer wall of the tube body 1, and one side of the rubber sleeve is provided with a rubber ring, one end of the rubber ring is fixedly connected to one end of the annular plate, and the other end of the rubber ring is fit with one end of the tube body 1.

[0008] Preferably, a pressure gauge is threadedly connected to the top inner wall of the tube body 1, and sealing rings are fitted on the bottom of the pressure gauge and the bottom of the gauge rod.

[0009] Preferably, the bottoms of the two sealing rings fit respectively with the top groove of the tube body one and the top groove of the tube body two.

[0010] Preferably, a circular ring is fitted below the outer wall of the sealing ring, and the bottoms of the two circular rings are fixedly connected to the top of the first tube body and the top of the second tube body respectively.

[0011] Preferably, a groove block is fixedly connected to one side of the inner wall of the second tube body, a ball is slidably engaged in a groove at one end of the groove block, and one end of the ball is fitted with one side of the outer wall of the first tube body.

[0012] The utility model provides a device for converting the airtight gauge rod of a solid rocket engine, and the beneficial effect is that: through the cooperation of the tube body 1, the tube body 2, the annular plate, the vertical block, the straight cylinder and the conversion structure, the device can be used to rotate the tube body 1, and the tube body 1 rotates on the inner wall of the tube body 2, so as to adjust the angle of the pressure gauge, rotate the threaded rod, the threaded rod drives the square rod to move right, the square rod drives the clamping plate to move right, the clamping plate and the tube body 2 clamp the circular plate, so as to connect the tube body 1 and the tube body 2, and at the same time, the rubber ring, the rubber sleeve and the rubber pad have multiple sealing effects, which is convenient for multiple sealing of the connection position, and avoids leakage when the sealing structure is damaged due to multiple conversion angles;

[0013] Through the cooperation of tube body one, tube body two, gauge rod, circular ring and sealing ring, when the device is in use, the sealing ring can be placed on the inner wall of the circular ring, and the pressure gauge and the gauge rod can be rotated so that the pressure gauge and the gauge rod enter the inner walls of tube body one and tube body two, thereby facilitating the positioning of the sealing ring and preventing the sealing ring from being offset and affecting the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the tube body 1, the tube body 2 and the meter rod of the utility model;

[0016] Figure 3 This is a schematic diagram of the square rod, vertical block and straight tube structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the tube body, the groove block and the ball of the utility model;

[0018] Figure 5 This is a schematic diagram of the straight tube, square rod and threaded rod structure of the utility model;

[0019] Figure 6 The utility model is a schematic diagram of the sealing ring, the circular ring and the meter rod structure.

[0020] In the figure: 1. pressure gauge; 2. conversion structure; 2a1. square rod; 2a2. threaded rod; 2a3. splint; 2a4. rubber ring; 2a5. rubber sleeve; 2a6. rubber pad 1; 2b1. rubber pad 2; 3. sealing ring; 4. tube body 1; 5. circular ring; 6. gauge rod; 7. tube body 2; 8. circular plate; 9. vertical block; 10. straight cylinder; 11. annular plate; 12. groove block; 13. ball bearing. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] Embodiment 1:

[0023] Refer to the attached Figure 1-6 In the present embodiment, a device for converting an airtight gauge rod of a solid rocket engine includes a gauge rod 6, a tube body 2 7 is threadedly connected to the lower portion of the outer wall of the gauge rod 6, a tube body 1 4 is fitted in the inner wall gap at one end of the tube body 2 7, a circular plate 8 is fixedly connected to one side of the outer wall of the tube body 1 4, a vertical block 9 is fixedly connected to one side of the outer wall of the tube body 2 7, a straight cylinder 10 is fixedly connected to the inner wall of the vertical block 9, an annular plate 11 is fixedly connected to one side of the inner wall of the tube body 2 7, a pressure gauge 1 is threadedly connected to the top inner wall of the tube body 1 4, and a sealing ring 3 is fitted to the bottom of the pressure gauge 1 and the bottom of the gauge rod 6.

[0024] The sealing ring 3 plays a sealing role. The bottoms of the two sealing rings 3 are respectively fitted with the top grooves of the tube body 1 4 and the top grooves of the tube body 2 7. A circular ring 5 is fitted under the outer wall of the sealing ring 3. The bottoms of the two circular rings 5 ​​are respectively fixedly connected to the tops of the tube body 1 4 and the tops of the tube body 2 7. The circular ring 5 plays a limiting role for the sealing ring 3. A groove block 12 is fixedly connected to one side of the inner wall of the tube body 2 7. A ball 13 is slidably engaged with the groove at one end of the groove block 12. When the ball 13 is subjected to force, it can roll in the groove at one end of the groove block 12. One end of the ball 13 is fitted with one side of the outer wall of the tube body 1 4. A conversion structure 2 is provided on one side of the straight tube 10. The conversion structure 2 is convenient for multiple sealing of the connection position to avoid leakage when the sealing structure is damaged due to multiple angle conversions.

[0025] The conversion structure 2 includes a square rod 2a1, one side of the outer wall of the square rod 2a1 is clearance-matched with the inner wall of one end of the straight cylinder 10, and the inner wall of one end of the straight cylinder 10 plays a limiting role when the square rod 2a1 moves left and right under force. One end of the square rod 2a1 is rotatably connected to a threaded rod 2a2 through a bearing, and one side of the outer wall of the threaded rod 2a2 is threadedly connected to the inner wall of the other end of the straight cylinder 10. The other end of the square rod 2a1 is fixedly connected to a clamping plate 2a3, and one side of the clamping plate 2a3 is provided with a rubber pad 2a6, and one end of the rubber pad 2a6 is fixedly connected to one end of the circular plate 8.

[0026] The other end of the rubber pad 2a6 is fitted with one end of the tube body 27, and a rubber sleeve 2a5 is provided on one side of the rubber pad 2a6. The outer wall of the rubber sleeve 2a5 is fixedly connected to the inner wall of one end of the tube body 27, and the inner wall of the rubber sleeve 2a5 is fitted with one side of the outer wall of the tube body 4. A rubber ring 2a4 is provided on one side of the rubber sleeve 2a5. The rubber pad 2a6, the rubber sleeve 2a5 and the rubber ring 2a4 all play a sealing role. One end of the rubber ring 2a4 is fixedly connected to one end of the annular plate 11, and the other end of the rubber ring 2a4 is fitted with one end of the tube body 4, which is convenient for multiple sealing of the connection position to avoid leakage when the sealing structure is damaged due to multiple angle changes.

[0027] Working principle:

[0028] When the solid rocket engine uses an airtight gauge rod conversion device to convert the angle of the pressure gauge 1:

[0029] Place the sealing ring 3 on the inner wall of the circular ring 5, rotate the pressure gauge 1 and the gauge rod 6, so that the pressure gauge 1 and the gauge rod 6 enter the inner wall of the tube body 1 4 and the tube body 2 7, and fix the pressure gauge 1 and the gauge rod 6, rotate the tube body 1 4, and the tube body 1 4 rotates on the inner wall of the tube body 2 7, thereby realizing the conversion and adjustment of the angle of the pressure gauge 1, and adjusting the pressure gauge 1 to a vertical state with the ground, rotate the threaded rod 2a2, the threaded rod 2a2 drives the square rod 2a1 to move right, the square rod 2a1 drives the clamping plate 2a3 to move right, the clamping plate 2a3 and the tube body 2 7 clamp the circular plate 8, thereby realizing the connection between the tube body 1 4 and the tube body 2 7, and at the same time, the rubber ring 2a4, the rubber sleeve 2a5 and the rubber pad 1 2a6 play a multiple sealing role to avoid leakage, and at the same time realize the positioning of the position of the pressure gauge 1, so that the staff can read the value on the pressure gauge 1, so as to judge the air tightness of the solid rocket engine.

[0030] Embodiment 2:

[0031] See attached Figure 1-6 In the present embodiment, a device for converting the airtight gauge rod of a solid rocket engine is provided, wherein the conversion structure 2 may further include a rubber pad 2b1, the outer wall of the rubber pad 2b1 being fixedly connected to the inner wall of one end of the splint 2a3, and one end of the rubber pad 2b1 being in contact with the outer side of one end of the circular plate 8.

[0032] Working principle:

[0033] The provision of the second rubber pad 2b1 can increase the friction force, thereby improving the stability of the clamping and fixing of the circular plate 8 by the clamping plate 2a3.

[0034] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A device for converting a solid rocket engine airtight gauge rod, comprising a gauge rod (6), characterized in that: The lower part of the outer wall of the meter rod (6) is threadedly connected to the second tube body (7); the inner wall of one end of the second tube body (7) is gap-matched with the first tube body (4); one side of the outer wall of the first tube body (4) is fixedly connected to a circular plate (8); one side of the outer wall of the second tube body (7) is fixedly connected to a vertical block (9); the inner wall of the vertical block (9) is fixedly connected to a straight tube (10); one side of the inner wall of the second tube body (7) is fixedly connected to an annular plate (11); and one side of the straight tube (10) is provided with a conversion structure (2).

2. The device for converting the airtight gauge rod of a solid rocket engine according to claim 1, characterized in that: The conversion structure (2) comprises a square rod (2a1), one side of the outer wall of the square rod (2a1) is clearance-matched with the inner wall of one end of the straight tube (10), one end of the square rod (2a1) is rotatably connected to a threaded rod (2a2) via a bearing, one side of the outer wall of the threaded rod (2a2) is threadedly connected to the inner wall of the other end of the straight tube (10), the other end of the square rod (2a1) is fixedly connected to a clamping plate (2a3), one side of the clamping plate (2a3) is provided with a rubber pad (2a6), one end of the rubber pad (2a6) is fixedly connected to one end of the circular plate (8), The other end of the rubber pad one (2a6) is fitted with one end of the tube body two (7); a rubber sleeve (2a5) is provided on one side of the rubber pad one (2a6); the outer wall of the rubber sleeve (2a5) is fixedly connected to the inner wall of one end of the tube body two (7); the inner wall of the rubber sleeve (2a5) is fitted with one side of the outer wall of the tube body one (4); a rubber ring (2a4) is provided on one side of the rubber sleeve (2a5); one end of the rubber ring (2a4) is fixedly connected to one end of the annular plate (11); the other end of the rubber ring (2a4) is fitted with one end of the tube body one (4).

3. The device for converting the airtight gauge rod of a solid rocket engine according to claim 1, characterized in that: The top inner wall of the tube body (4) is threadedly connected to a pressure gauge (1), and the bottom of the pressure gauge (1) and the bottom of the gauge rod (6) are both fitted with sealing rings (3).

4. The device for converting the airtight gauge rod of a solid rocket engine according to claim 3, characterized in that: The bottoms of the two sealing rings (3) are respectively fitted with the top groove of the tube body 1 (4) and the top groove of the tube body 2 (7).

5. The device for converting the airtight gauge rod of a solid rocket engine according to claim 3, characterized in that: A circular ring (5) is fitted below the outer wall of the sealing ring (3), and the bottoms of the two circular rings (5) are fixedly connected to the top of the first tube body (4) and the top of the second tube body (7) respectively.

6. The device for converting the airtight gauge rod of a solid rocket engine according to claim 1, characterized in that: A groove block (12) is fixedly connected to one side of the inner wall of the second tube body (7), a ball (13) is slidably engaged in a groove at one end of the groove block (12), and one end of the ball (13) is in contact with one side of the outer wall of the first tube body (4).

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