Low-temperature breaking valve

Abstract

The utility model provides a low-temperature break-away valve, which belongs to the technical field of valve bodies and comprises a valve body component and a fixing component. The valve body assembly is composed of two valve body shells which are in butt joint with each other. The utility model discloses. First flanges are connected to one ends of the two valve body shells, two first pull rods are symmetrically hinged to the surface of one first flange, and two second pull rods are symmetrically hinged to the surface of the other first flange. The lock catch at one end of the first pull rod is buckled with the hook at one end of the second pull rod, the two valve body shells are fixed into a whole, the valve body shells bear tensile force through the first pull rod and the second pull rod when being stressed, and the situation that the two valve body shells are unnecessarily snapped due to the fact that the snapping pin is snapped when one valve body shell is pulled due to jolting or improper operation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of valve body technology, specifically a low-temperature break-off valve. Background Technology

[0002] Cryogenic breakaway valves are used in fluid transportation systems such as liquid oxygen, liquid nitrogen, liquid air, and liquefied natural gas to prevent leaks caused by accidental slippage or displacement of tank trucks or ships, resulting in damage or breakage of hoses, loading arms, and surrounding equipment. Their function is to mechanically separate the pipeline in case of overload during fluid loading and unloading, preventing accidents without causing fluid leakage. This reduces losses and ensures personal safety. One example is a cryogenic breakaway valve for storage tanks with application number "CN202221245093.0". This device allows adjustment of the spring by rotating the threaded ring, providing enhanced safety. The raised and recessed flanges, with their raised rings and grooves, can be fixedly connected to the hoses. However, certain shortcomings exist in practical applications: during pipeline connection operations or transportation, the breakaway valve may be subjected to bumps or improper operation, potentially causing the breakaway bolts to break unnecessarily. Utility Model Content

[0003] The purpose of this invention is to provide a cryogenic break-off valve to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature breakaway valve, comprising a valve body assembly and a fixing assembly;

[0005] The valve body assembly consists of two valve body shells that are mated together. An installation sleeve is fixedly installed inside each valve body shell. A telescopic rod is connected to the piston inside the installation sleeve. A cone valve is fixedly installed at the end of the telescopic rod. A retaining ring is installed at one end of the telescopic rod and on the surface of the installation sleeve. A return spring is provided between the two retaining rings. Valve holes are opened at both ends of the valve body shell. The cone valve is inserted into the valve hole at one end.

[0006] The fixing assembly includes a first flange connected to one end of two valve body shells. Two first tie rods are symmetrically hinged to the surface of one of the first flanges, and a latch is installed at one end of each of the two first tie rods. Two second tie rods are symmetrically hinged to the surface of the other first flange, and a hook is fixedly installed at one end of each of the two second tie rods. The latch engages with the hook.

[0007] As a preferred embodiment of this utility model: a second flange is fixedly installed at the other end of the two valve body shells, and a first clamp and a second clamp are respectively provided on both sides of the two second flanges. An annular groove is opened on the inner side of the first clamp and the second clamp, and the second flange is inserted into the annular groove.

[0008] As a preferred embodiment of this utility model: both sides of the first clamp and the second clamp are connected to mounting blocks, and a pin is inserted inside the mounting block. One end of the pin is connected to a pull ring, and the other end of the pin is inserted with a break pin.

[0009] As a preferred embodiment of this utility model: a docking post is installed at the front end of the cone valve, one of the docking posts has a plug connected to its surface, and the other docking post has a slot on its surface, with the plug inserted into the slot.

[0010] As a preferred embodiment of this utility model: the surface of the cone valve is provided with an installation groove, and a sealing ring is embedded inside the installation groove.

[0011] As a preferred embodiment of this utility model, a plurality of connection holes are provided around the surface of the first flange.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) A first flange is connected to one end of the two valve bodies. Two first tie rods are symmetrically hinged to the surface of one of the first flanges, and two second tie rods are symmetrically hinged to the surface of the other first flange. When the break-off valve is not in use, by pulling the first tie rod and the second tie rod, the latch at one end of the first tie rod is engaged with the hook at one end of the second tie rod, so that the two valve bodies are fixed into a whole. When the valve body is subjected to force, the first tie rod and the second tie rod bear the tension, so as to avoid the break-off pin being broken when one of the valve bodies is bumped or improperly operated and pulled, which would cause the two valve bodies to break unnecessarily.

[0014] (2) The valve body assembly consists of two valve body shells. Each valve body shell has a mounting sleeve fixedly installed inside. The piston inside the mounting sleeve is connected to a telescopic rod. A cone valve is installed at one end of the telescopic rod. The cone valve is inserted into the valve hole at one end of the valve body shell. When the two valve body shells are connected, the two cone valves abut against each other through the connecting pin, causing the cone valve to drive the telescopic rod to move into the mounting sleeve. At this time, the valve hole is in the open state, which facilitates the passage of low temperature medium. When the telescopic rod moves into the mounting sleeve, it pushes the return spring to compress and store force through the retaining ring. When the two valve body shells are pulled apart, the return spring quickly pushes the cone valve at one end of the telescopic rod to seal the valve hole and prevent leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the valve body assembly structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the fixing component structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the pull-off pin installation structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the cone valve structure of this utility model.

[0020] In the diagram: 3. Valve body assembly; 31. Valve body shell; 32. Mounting sleeve; 33. Telescopic rod; 34. Cone valve; 35. Retaining ring; 36. Return spring; 37. Valve hole; 4. Fixing assembly; 41. First flange; 42. First pull rod; 43. Lock; 44. Second pull rod; 45. Hook; 5. Second flange; 6. First clamp; 7. Second clamp; 8. Annular groove; 9. Mounting block; 10. Pin; 11. Pull ring; 12. Break pin; 13. Connecting post; 14. Plug; 15. Slot; 16. Mounting groove; 17. Sealing ring; 18. Connection hole. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see Figures 1-5 A cryogenic breakaway valve includes: a valve body assembly 3 and a fixing assembly 4;

[0023] Please see Figure 1 , Figure 2 The valve body assembly 3 consists of two valve body shells 31 that are mated together. An installation sleeve 32 is fixedly installed inside each of the two valve body shells 31. A telescopic rod 33 is connected to the piston inside the installation sleeve 32. A cone valve 34 is fixedly installed at the end of the telescopic rod 33. A retaining ring 35 is installed at one end of the telescopic rod 33 and on the surface of the installation sleeve 32. A return spring 36 is provided between the two retaining rings 35. Valve holes 37 are opened at both ends of the valve body shell 31. The cone valve 34 is inserted into the valve hole 37 at one end.

[0024] In practical use: The valve body assembly 3 consists of two valve body shells 31. An installation sleeve 32 is fixedly installed inside each valve body shell 31. A telescopic rod 33 is connected to the piston inside the installation sleeve 32. A cone valve 34 is installed at one end of the telescopic rod 33. The cone valve 34 is inserted into the valve hole 37 at one end of the valve body shell 31. When the two valve body shells 31 are connected, the two cone valves 34 abut against each other through the connecting post 13, causing the cone valve 34 to drive the telescopic rod 33 to move into the installation sleeve 32. At this time, the valve hole 37 is open, facilitating the passage of the low-temperature medium. When the telescopic rod 33 moves into the installation sleeve 32, it pushes the return spring 36 through the retaining ring 35 to compress and store force. When the two valve body shells 31 are pulled apart, the return spring 36 quickly pushes the cone valve 34 at one end of the telescopic rod 33 to seal the valve hole 37, preventing leakage.

[0025] Please see Figure 1 , Figure 3 The fixing assembly 4 includes a first flange 41 connected to one end of the two valve body shells 31. Two first pull rods 42 are symmetrically hinged to the surface of one of the first flanges 41, and a latch 43 is installed at one end of the two first pull rods 42. Two second pull rods 44 are symmetrically hinged to the surface of the other first flange 41, and a hook 45 is fixedly installed at one end of the two second pull rods 44. The latch 43 is engaged with the hook 45.

[0026] In practical use: A first flange 41 is connected to one end of each of the two valve body shells 31. Two first pull rods 42 are symmetrically hinged to the surface of one of the first flanges 41, and two second pull rods 44 are symmetrically hinged to the surface of the other first flange 41. When the breakaway valve is not in use, by pulling the first pull rods 42 and the second pull rods 44, the latch 43 at one end of the first pull rod 42 is engaged with the hook 45 at one end of the second pull rod 44, thus fixing the two valve body shells 31 into a whole. When the valve body shell 31 is under force, the first pull rods 42 and the second pull rods 44 bear the tension, preventing the breakaway pin 12 from breaking unnecessarily when one of the valve body shells 31 is pulled due to bumps or improper operation. In addition: when it is necessary to transport the medium through the cryogenic breakaway valve, the latch 43 and the hook 45 are unlocked, so that the two valve body shells 31 bear the force through the breakaway pin 12.

[0027] Please see Figure 4 The other end of the two valve body shells 31 is fixedly installed with a second flange 5. The two second flanges 5 are respectively provided with a first clamp 6 and a second clamp 7 on both sides. The inner side of the first clamp 6 and the second clamp 7 is provided with an annular groove 8. The second flange 5 is inserted into the annular groove 8. The first clamp 6 and the second clamp 7 are connected to mounting blocks 9 on both sides. A pin 10 is inserted into the inside of the mounting block 9. One end of the pin 10 is connected to a pull ring 11, and the other end of the pin 10 is inserted with a break pin 12.

[0028] In practical use: Second flanges 5 are fixedly installed at the other ends of the two valve body shells 31. First clamps 6 and second clamps 7 are respectively provided on both sides of the two second flanges 5. Annular grooves 8 are opened on the inner sides of the first clamps 6 and second clamps 7. When the two valve body shells 31 are joined, the second flanges 5 are inserted into the annular grooves 8. Mounting blocks 9 are connected to both sides of the first clamps 6 and second clamps 7. The two mounting blocks 9 are connected by a pin 10. A pull ring 11 is installed at one end of the pin 10, and a pull-off pin 12 is inserted at the other end. The first clamps 6... The second clamp 7 is fixed by the pull pin 12 at the other end of the pin 10, so that the two valve body shells 31 are connected. The pull ring 11 is connected to the valve body shell 31 mounting body by the pull rope. When the valve body shell 31 is pulled, the pull ring 11 drives the pin 10 to bear force. When the pulling force is greater than the force value of the pull pin 12, the pull pin 12 breaks, and the pin 10 is disengaged from the mounting block 9, so that the first clamp 6 and the second clamp 7 are disengaged. At this time, the two valve body shells 31 are disconnected, avoiding the possibility of being unable to disconnect and causing pulling damage to the connected pipeline.

[0029] Please see Figure 5 The front end of the cone valve 34 is equipped with a docking post 13. One of the docking posts 13 has a plug 14 connected to its surface, and the other docking post 13 has a slot 15 on its surface, into which the plug 14 is inserted.

[0030] In practical use: The front ends of the two cone valves 34 are equipped with docking posts 13. One docking post 13 has a plug 14 connected to its surface, and the other docking post 13 has a slot 15. When the two valve bodies are docked, the plug 14 is inserted into the slot 15, which facilitates the quick docking of the docking posts 13 and pushes the cone valve 34 out of the valve hole 37, so that the valve body is in the open state.

[0031] Please see Figure 5 The cone valve 34 has a mounting groove 16 on its surface, and a sealing ring 17 is embedded inside the mounting groove 16.

[0032] In practical use: A sealing ring 17 is embedded in the mounting groove 16 on the surface of the cone valve 34. When the cone valve 34 is inserted into the valve hole 37, the sealing ring 17 enhances the sealing performance of the cone valve 34 and prevents leakage.

[0033] Please see Figure 3 The surface of the first flange 41 is provided with several connection holes 18.

[0034] In practical use: the surface of the first flange 41 is provided with several connection holes 18, which facilitate the installation and connection of the first flange 41 with the conveying pipeline.

[0035] Two valve body shells 31 are connected to one end of a first flange 41. Two first pull rods 42 are symmetrically hinged to the surface of one of the first flanges 41, and two second pull rods 44 are symmetrically hinged to the surface of the other first flange 41. When the breakaway valve is not in use, by pulling the first pull rods 42 and the second pull rods 44, the latch 43 at one end of the first pull rod 42 is engaged with the hook 45 at one end of the second pull rod 44, so that the two valve body shells 31 are fixed into a whole. When the valve body shell 31 is under force, the first pull rods 42 and the second pull rods 44 bear the tension, so as to prevent the breakaway pin 12 from breaking when one of the valve body shells 31 is pulled due to bumps or improper operation, which would cause the two valve body shells 31 to break unnecessarily. In addition, when it is necessary to transport the medium through the cryogenic breakaway valve, the latch 43 and the hook 45 are unlocked, so that the two valve body shells 31 bear the force through the breakaway pin 12.

[0036] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cryogenic puller valve characterized by, include: The valve body assembly (3) consists of two valve body shells (31) that are connected to each other. An installation sleeve (32) is fixedly installed inside each of the two valve body shells (31). A telescopic rod (33) is connected to the piston inside the installation sleeve (32). A cone valve (34) is fixedly installed at the end of the telescopic rod (33). A retaining ring (35) is installed at one end of the telescopic rod (33) and on the surface of the installation sleeve (32). A return spring (36) is provided between the two retaining rings (35). A valve hole (37) is opened at both ends of the valve body shell (31). The cone valve (34) is inserted into the valve hole (37) at one end. The fixing assembly (4) includes a first flange (41) connected to one end of two valve body shells (31), one of the first flanges (41) having two first pull rods (42) symmetrically hinged to its surface, one end of the two first pull rods (42) being fitted with a latch (43), and the other first flange (41) having two second pull rods (44) symmetrically hinged to its surface, one end of the two second pull rods (44) being fixedly fitted with a hook (45), the latch (43) being engaged with the hook (45).

2. A cryogenic puller valve according to claim 1, wherein: The other end of the two valve body shells (31) is fixedly installed with a second flange (5). The two second flanges (5) are respectively provided with a first clamp (6) and a second clamp (7) on both sides. The inner side of the first clamp (6) and the second clamp (7) is provided with an annular groove (8), and the second flange (5) is inserted into the annular groove (8).

3. A cryogenic puller valve according to claim 2, wherein: The first clamp (6) and the second clamp (7) are connected to mounting blocks (9) on both sides. A pin (10) is inserted inside the mounting block (9). One end of the pin (10) is connected to a pull ring (11), and the other end of the pin (10) is inserted with a break pin (12).

4. A cryogenic puller valve according to claim 1, wherein: The front end of the cone valve (34) is equipped with a docking post (13), one of the docking posts (13) is connected to a plug (14) on its surface, and the other docking post (13) is provided with a slot (15) on its surface, and the plug (14) is inserted into the slot (15).

5. A cryogenic puller valve according to claim 1, wherein: The cone valve (34) has a mounting groove (16) on its surface, and a sealing ring (17) is embedded inside the mounting groove (16).

6. A cryogenic puller valve according to claim 1, wherein: The surface of the first flange (41) is provided with a plurality of connection holes (18).

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