CN220082822U - Liquid nitrogen breaking valve of low-temperature storage tank - Google Patents
Liquid nitrogen breaking valve of low-temperature storage tank Download PDFInfo
- Publication number
- CN220082822U CN220082822U CN202321663989.5U CN202321663989U CN220082822U CN 220082822 U CN220082822 U CN 220082822U CN 202321663989 U CN202321663989 U CN 202321663989U CN 220082822 U CN220082822 U CN 220082822U
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- valve body
- fixedly connected
- breaking
- valve
- liquid nitrogen
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000007788 liquid Substances 0.000 title claims abstract description 28
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 description 6
- 238000005457 optimization Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model discloses a liquid nitrogen breaking valve of a low-temperature storage tank, which comprises a first valve body and a second valve body, wherein cavities are formed in the first valve body and the second valve body, four evenly-distributed sliding grooves are formed in the right end of the first valve body in a penetrating manner, sliding blocks are movably connected in the four sliding grooves, a baffle plate is fixedly connected between the opposite ends of the four sliding blocks until the baffle plate is compressed, a sealing pipe extends into the cavity in the first valve body, the purpose of communicating the first valve body with the second valve body is achieved, the sealing pipe moves rightwards to be separated from the cavity in the first valve body, at the moment, a spring loses limiting extension to drive the baffle plate to move rightwards, the right end of the first valve body is blocked, the effect of preventing leakage of liquid nitrogen is achieved, and the sealing effect is better because the length of the baffle plate is longer than the wall thickness of the first valve body, and a pulling ring breaking mode of shrinking a sliding block is safer by using the second spring.
Description
Technical Field
The utility model relates to the technical field of snap-off valves, in particular to a liquid nitrogen snap-off valve of a low-temperature storage tank.
Background
The low-temperature stretch-break valve is used for preventing leakage accidents caused by damage and fracture of hoses, oil filling riser and peripheral equipment due to unintentional sliding and accidental displacement of tank trucks or ships in fluid delivery systems such as liquid oxygen, liquid nitrogen, liquid air and liquefied natural gas, and has the function of carrying out mechanical separation on pipelines in emergency in the process of loading and unloading the fluids if overload traction force is encountered, so that the pipelines/hoses and peripheral connecting devices are prevented from being damaged, and larger disasters are avoided; or when accidents such as fire and leakage occur suddenly in the fluid loading and unloading process, workers in the field can rapidly break the working vehicle to escape from the field without causing leakage of fluid, so that the loss can be reduced, and the personal safety is ensured;
when the existing breaking valve works, when the breaking valve is subjected to emergency overload external force, the connecting screw is broken, the breaking valve is separated into two parts, and valve cores in the two parts are automatically closed at the moment to avoid environmental pollution or larger harm to personnel and equipment caused by fluid leakage in a pipeline;
therefore, when the snap-off valve is used, the snap-off valve needs to have good sealing performance so as to prevent fluid leakage during snap-off and damage to the environment and surrounding personnel; the liquid nitrogen breaking valve for the low-temperature storage tank is good in sealing performance and convenient to break, so that the requirements are met.
Disclosure of Invention
The utility model aims to provide a liquid nitrogen breaking valve of a low-temperature storage tank, which has the characteristics of good sealing performance and convenience in breaking.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the novel valve comprises a first valve body and a second valve body, wherein cavities are formed in the first valve body and the second valve body, four evenly distributed sliding grooves are formed in the right end of the first valve body in a penetrating mode, sliding blocks are movably connected in the four sliding grooves, a baffle is fixedly connected between the opposite ends of the four sliding blocks, and a spring positioned in the cavities is fixedly connected to the left end of the baffle;
the left end fixedly connected with screwed pipe of first valve body, the inner wall right-hand member fixedly connected with connecting pipe of screwed pipe, the right-hand member of connecting pipe and the other end fixed connection of spring.
In order to increase the tightness of the first valve body and the second valve body when the first valve body is communicated with the second valve body, the left end of the second valve body is preferably fixedly connected with a sealing pipe, the inner wall of the left end of the sealing pipe is fixedly connected with four uniformly distributed connecting rods, sealing rods are fixedly connected between the opposite ends of the four connecting rods, and the right end of the second valve body is preferably fixedly connected with a second threaded pipe.
In order to facilitate breaking, as a preferred low-temperature storage tank liquid nitrogen breaking valve of the utility model, the right end face of the first valve body is fixedly connected with four breaking pipes which are uniformly distributed, the right ends of the outer walls of the four breaking pipes are respectively provided with breaking holes in a penetrating way, the left end face of the second valve body is fixedly connected with four breaking rods which are uniformly distributed, the left ends of the outer walls of the four breaking rods are respectively provided with a second breaking hole, the interiors of the four second breaking holes are respectively connected with two sliding blocks which are oppositely arranged in a sliding way, and a second spring is fixedly connected between the two sliding blocks.
In order to facilitate connection with a pipeline, as a liquid nitrogen breaking valve of the cryogenic storage tank, preferably, the inner walls of the threaded pipe and the second threaded pipe are both provided with threads.
In order to facilitate the sealing pipe to enter the first valve body, the liquid nitrogen breaking valve for the cryogenic storage tank is preferable, and the outer wall of the sealing pipe is matched with the right end of the baffle plate.
In order to facilitate the communication between the second valve body and the second valve body when not broken, it is preferable that the total length of the seal pipe and the seal rod is smaller than the length of the first valve body as a cryogenic tank liquid nitrogen breaking valve of the present utility model.
Compared with the prior art, the utility model has the following beneficial effects:
when the device is used, the first valve body is communicated with the second valve body, the two sliding blocks relatively move in the second breaking hole, the second spring is compressed, the outer walls of the four breaking rods are respectively placed in the inner walls of the four breaking pipes until the two sliding blocks are positioned at the positions of the breaking holes, the second spring loses limit extension, the two sliding blocks move in the second breaking holes Kong Xiangbei, the opposite ends of the two sliding blocks are clamped in the breaking holes so as to fix the positions between the first valve body and the second valve body, in the process, the sealing rod moves leftwards, the sealing pipe is driven to move leftwards until the baffle plate is compressed, the sealing pipe extends into a cavity in the first valve body, the purpose of communicating the first valve body with the second valve body is achieved, and a vehicle for transporting liquid nitrogen and a pipeline for transporting liquid nitrogen are respectively connected through threads arranged on the inner walls of the threaded pipe and the second threaded pipe; when breaking, the second valve body receives the power and makes two sliding blocks relatively remove in the second breaks hole, and then breaks away from the position of breaking hole for the sealed tube moves rightwards and breaks away from in the cavity of first valve body, and the spring loses the restriction extension this moment, drives the baffle and moves rightwards, thereby blocks the right-hand member of first valve body, reaches the effect that prevents that liquid nitrogen from revealing, because the length of baffle is greater than the wall thickness of first valve body, so sealed effect is better, and uses the second spring to make the snap-off mode of pull ring sliding block shrink also safer.
Drawings
FIG. 1 is a diagram of the overall structure of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model;
FIG. 3 is a right side view cross-sectional illustration of the present utility model;
fig. 4 is a left side view cross-sectional view of the present utility model.
In the figure: 1. a first valve body; 2. a second valve body; 3. a cavity; 4. a chute; 5. a slide block; 6. a baffle; 7. a spring; 8. a threaded tube; 9. a connecting pipe; 10. sealing the tube; 11. a connecting rod; 12. a sealing rod; 13. a second threaded tube; 14. breaking the tube; 15. breaking the hole; 16. breaking the rod; 17. a second stretch-breaking hole; 18. a sliding block; 19. a second spring; 20. and (5) screw threads.
Detailed Description
Referring to fig. 1 to 4, a liquid nitrogen breaking valve of a low-temperature storage tank comprises a first valve body 1 and a second valve body 2, wherein cavities 3 are formed in the first valve body 1 and the second valve body 2, four evenly distributed sliding grooves 4 are formed in the right end of the first valve body 1 in a penetrating manner, sliding blocks 5 are movably connected in the four sliding grooves 4, a baffle 6 is fixedly connected between opposite ends of the four sliding blocks 5, and a spring 7 positioned in the cavities 3 is fixedly connected to the left end of the baffle 6;
the left end fixedly connected with screwed pipe 8 of first valve body 1, the inner wall right-hand member fixedly connected with connecting pipe 9 of screwed pipe 8, the right-hand member of connecting pipe 9 and the other end fixed connection of spring 7.
In this embodiment: the first valve body 1 is connected with a vehicle for transporting liquid nitrogen through the threaded pipe 8, when the first valve body 1 is not communicated with the second valve body 2, the spring 7 is in an extension state, the baffle 6 is always propped against the right end of the first valve body 1, so that the first valve body 1 is in a sealing state, when the first valve body is communicated, the sealing rod 12 props against the baffle 6, so that the baffle 6 moves left inside the inner cavity 3, and then the sliding block 5 is driven to slide on the inner wall of the sliding groove 4, so that the spring 7 is compressed under stress, and the baffle 6 is reset to provide power when the subsequent breaking is carried out.
As a technical optimization scheme of the utility model, the left end of the second valve body 2 is fixedly connected with a sealing tube 10, the inner wall of the left end of the sealing tube 10 is fixedly connected with four uniformly distributed connecting rods 11, a sealing rod 12 is fixedly connected between the opposite ends of the four connecting rods 11, and the right end of the second valve body 2 is fixedly connected with a second threaded tube 13.
In this embodiment: the second valve body 2 is connected with a pipeline for conveying liquid nitrogen through the second threaded pipe 13, and when the first valve body 1 and the second valve body 2 are communicated, the sealing rod 12 is moved, so that the sealing pipe 10 is driven to move until the baffle 6 is compressed, and the sealing pipe 10 is extended into the cavity 3 in the first valve body 1.
As a technical optimization scheme of the utility model, the right end face of the first valve body 1 is fixedly connected with four uniformly distributed breaking pipes 14, the right ends of the outer walls of the four breaking pipes 14 are respectively provided with breaking holes 15 in a penetrating way, the left end face of the second valve body 2 is fixedly connected with four uniformly distributed breaking rods 16, the left ends of the outer walls of the four breaking rods 16 are respectively provided with a second breaking hole 17, the interiors of the four second breaking holes 17 are respectively connected with two sliding blocks 18 which are oppositely arranged in a sliding way, and a second spring 19 is fixedly connected between the two sliding blocks 18.
In this embodiment: during communication, the second spring 19 is compressed first, so that the two sliding blocks 18 relatively move in the second breaking hole 17, then the outer walls of the four breaking rods 16 are respectively placed in the inner walls of the four breaking pipes 14 until the two sliding blocks 18 are positioned at the positions of the breaking holes 15, the second spring 19 loses limiting extension, so that the two sliding blocks 18 move in the second breaking hole 17 in a reverse manner, and the opposite ends of the two sliding blocks 18 are clamped in the breaking holes 15, so that the first valve body 1 and the second valve body 2 are communicated.
As a technical optimization scheme of the utility model, the inner walls of the threaded pipe 8 and the second threaded pipe 13 are provided with threads 20.
In this embodiment: the screw thread 20 is used to connect the screw thread pipe 8 and the second screw thread pipe 13 with the pipe for transporting liquid nitrogen.
As a technical optimization scheme of the utility model, the outer wall of the sealing tube 10 is matched with the right end of the baffle 6.
In this embodiment: because the outer wall of the sealing tube 10 is matched with the right end of the baffle 6, when the sealing tube 10 is not broken, the sealing tube 10 is convenient to compress the baffle 6 to enter the first valve body 1.
As a technical optimization of the present utility model, the total length of the sealing tube 10 and the sealing rod 12 is smaller than the length of the first valve body 1.
In this embodiment: when the sealing tube 10 and the sealing rod 12 extend to the cavity 3 in the first valve body 1, the baffle 6 is just compressed to the inside of the cavity 3, so that the tightness of the first valve body 1 communicated with the second valve body 2 is better.
Working principle: when the device is used, the first valve body 1 and the second valve body 2 are communicated, during the communication, the two sliding blocks 18 are relatively moved in the second breaking holes 17, the second springs 19 are further compressed, then the outer walls of the four breaking rods 16 are respectively placed in the inner walls of the four breaking pipes 14 until the two sliding blocks 18 are positioned at the positions of the breaking holes 15, the second springs 19 lose the limit stretch, the two sliding blocks 18 are moved back to back in the second breaking holes 17, further the opposite ends of the two sliding blocks 18 are clamped in the breaking holes 15, so that the positions between the first valve body 1 and the second valve body 2 are fixed, in the process, the sealing rod 12 is moved leftwards, the sealing pipe 10 is driven to move leftwards until the sealing baffle 6 is compressed, the sealing pipe 10 is extended into the cavity 3 in the first valve body 1, the purpose of communicating the first valve body 1 with the second valve body 2 is achieved, and the transportation pipeline is respectively connected through threads 20 arranged on the inner walls of the threaded pipe 8 and the second threaded liquid nitrogen pipe 13; when the valve body is broken, the second valve body 2 is forced to relatively move the two sliding blocks 18 in the second breaking hole 17, so that the two sliding blocks are separated from the position of the breaking hole 15, the sealing tube 10 is further moved rightwards to separate from the cavity 3 in the first valve body 1, at the moment, the spring 7 loses limit extension and drives the baffle 6 to move rightwards, so that the right end of the first valve body 1 is blocked, the effect of preventing leakage of liquid nitrogen is achieved, the sealing effect is better because the length of the baffle 6 is larger than the wall thickness of the first valve body 1, and the breaking mode of the pull ring sliding block 18 is safer due to the fact that the second spring 19 is used.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (6)
1. The utility model provides a low temperature storage tank liquid nitrogen snap valve, includes first valve body (1) and second valve body (2), the inside of first valve body (1) and second valve body (2) all is equipped with cavity (3), its characterized in that: four evenly distributed sliding grooves (4) are formed in the right end of the first valve body (1) in a penetrating mode, sliding blocks (5) are movably connected in the four sliding grooves (4), a baffle plate (6) is fixedly connected between opposite ends of the four sliding blocks (5), and a spring (7) located in the cavity (3) is fixedly connected to the left end of the baffle plate (6);
the left end fixedly connected with screwed pipe (8) of first valve body (1), the inner wall right-hand member fixedly connected with connecting pipe (9) of screwed pipe (8), the right-hand member of connecting pipe (9) and the other end fixed connection of spring (7).
2. The cryogenic tank liquid nitrogen snap-off valve of claim 1, wherein: the sealing device is characterized in that the left end of the second valve body (2) is fixedly connected with a sealing tube (10), the inner wall of the left end of the sealing tube (10) is fixedly connected with four evenly distributed connecting rods (11), sealing rods (12) are fixedly connected between the opposite ends of the four connecting rods (11), and the right end of the second valve body (2) is fixedly connected with a second threaded tube (13).
3. The cryogenic tank liquid nitrogen snap-off valve of claim 2, wherein: the utility model discloses a novel valve, including first valve body (1), second valve body (2), second valve body (16), first valve body (1), second valve body (1), fourth terminal surface fixedly connected with four evenly distributed's breaking tube (14), four the outer wall right-hand member of breaking tube (14) has all run through and has seted up breaking hole (15), the left end face fixedly connected with of second valve body (2) four evenly distributed's breaking rod (16), four second breaking hole (17) have all been seted up to the outer wall left end of breaking rod (16), four the inside of second breaking hole (17) is all sliding connection has two sliding blocks (18) of placing relatively, two fixedly connected with second spring (19) between sliding block (18).
4. The cryogenic tank liquid nitrogen snap-off valve of claim 1, wherein: the inner walls of the threaded pipe (8) and the second threaded pipe (13) are provided with threads (20).
5. The cryogenic tank liquid nitrogen snap-off valve of claim 2, wherein: the outer wall of the sealing tube (10) is matched with the right end of the baffle plate (6).
6. The cryogenic tank liquid nitrogen snap-off valve of claim 2, wherein: the total length of the sealing tube (10) and the sealing rod (12) is smaller than the length of the first valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321663989.5U CN220082822U (en) | 2023-06-28 | 2023-06-28 | Liquid nitrogen breaking valve of low-temperature storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321663989.5U CN220082822U (en) | 2023-06-28 | 2023-06-28 | Liquid nitrogen breaking valve of low-temperature storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220082822U true CN220082822U (en) | 2023-11-24 |
Family
ID=88829806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321663989.5U Active CN220082822U (en) | 2023-06-28 | 2023-06-28 | Liquid nitrogen breaking valve of low-temperature storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220082822U (en) |
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2023
- 2023-06-28 CN CN202321663989.5U patent/CN220082822U/en active Active
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