CN213809047U - Quick-release high vacuum pressure relief device - Google Patents
Quick-release high vacuum pressure relief device Download PDFInfo
- Publication number
- CN213809047U CN213809047U CN202022221537.4U CN202022221537U CN213809047U CN 213809047 U CN213809047 U CN 213809047U CN 202022221537 U CN202022221537 U CN 202022221537U CN 213809047 U CN213809047 U CN 213809047U
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- Prior art keywords
- quick
- release
- sealing plug
- pressure relief
- high vacuum
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- 238000007789 sealing Methods 0.000 claims abstract description 68
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model discloses a quick-release high vacuum pressure relief device, which comprises a body connected with an outer tube on a double-wall tube, wherein the body is tubular, a sealing plug is arranged at the opening of the body, a limit step is arranged at the opening corresponding to the body, the sealing plug is pressed on the limit step, a quick-release connecting tube is connected at the opening of the body, the quick-release connecting tube is detachably connected with the body, the quick-release connecting tube comprises a release section, the inner diameter of the release section is larger than the outer diameter of the sealing plug, and a blocking plug structure for blocking the sealing plug from passing through is arranged in the release section, the utility model utilizes the sealing plug to reach the sealing requirement of ultra-high vacuum, thereby avoiding uncontrollable leakage, ensuring that the vacuum degree of a vacuum cavity of the double-wall tube can be maintained for a long time, and when the inner tube leaks, the pressure in the vacuum tube rises, and is ejected into the quick-release connecting tube to realize quick pressure relief, and the sealing plug is not lost at the blocking structure.
Description
Technical Field
The utility model belongs to the auxiliary fitting field for the double-walled pipe, more specifically the utility model relates to a quick-release type high vacuum pressure relief device that says so.
Background
An ultra-low temperature pipeline (the design temperature is-165 ℃) is arranged in a fuel storage and supply system of the marine LNG main engine. For the pipelines of the temperature grade, there is a method of conveying the medium by using double-layer pipelines (also called double-wall pipes, and the whole space between the double layers is vacuumized), which can facilitate the arrangement of the pipelines and the subsequent maintenance. For a double-layer vacuum-pumping pipeline (hereinafter referred to as a vacuum heat-insulation double-wall pipe), pressure control of a vacuum cavity is a safety necessary condition of a pipeline system; wherein, due to the leakage of the inner pipe, the LNG is rapidly vaporized in the vacuum cavity and the pressure is increased; at this time, a pressure relief device is needed to quickly relieve the pressure. However, conventional pressure relief devices usually use safety valves, which are not specially designed for high vacuum, so that the safety valve plate is very easy to leak and the vacuum degree of the system is damaged; eventually, the system may need to be re-evacuated. Re-evacuation is difficult for an operating vessel.
SUMMERY OF THE UTILITY MODEL
The utility model provides a be not enough to prior art, the utility model provides an utilize the sealing plug to reach the sealed requirement of super high vacuum, avoid uncontrollable leakage, make double-walled pipe vacuum cavity vacuum degree can obtain long-time maintenance to when taking place the inner tube leakage, vacuum tube internal pressure risees, and the sealing plug is ejecting to quick-release in taking over, realizes quick pressure release, and the sealing plug is in and keeps off stopper structure department and can not lose.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a quick-release type high vacuum pressure relief device, includes the body with outer union coupling on the double-walled pipe, and the body is the tubulose, and the opening part of body is provided with the sealing plug, the body corresponds the opening part and is provided with spacing step, and the sealing plug supports on spacing step, the opening part of body is connected with quick-release connection pipe, quick-release connection pipe can dismantle with the body and be connected, quick-release connection pipe is including the section of releasing, the internal diameter of section of releasing is greater than the external diameter of sealing plug, be provided with in the section of releasing and block the stopper structure that the sealing plug passed.
Further stop the stopper structure including keeping off ring and pin, keep off the ring and set up in the inside of section of releasing, and keep off the internal diameter of ring and be less than the external diameter of sealing plug, the pin is located and keeps off ring towards sealing plug one side.
Furthermore, a plurality of O-shaped sealing rings are arranged on the circumferential side surface of the sealing plug and are distributed along the axial direction.
Further, a threaded hole is formed in one side, facing the quick-release connecting pipe, of the sealing plug, and the threaded hole is a counter bore.
Further, the body is connected with the quick-release connecting pipe through a hoop.
And a sealing ring with a bracket is arranged between the body and the quick-release connecting pipe.
Compared with the prior art, the beneficial effects of the utility model are that: the body is welded and fixed on the outer pipe of the double-wall pipe, so that the body is communicated with the vacuum cavity of the double-wall pipe, negative pressure is generated in the vacuum cavity through the sealing of the plurality of O-shaped sealing rings, the sealing plug is firmly adsorbed on the limiting step to plug the opening of the body, the body can meet the sealing requirement of ultrahigh vacuum, the sealing plug is not easy to damage, uncontrollable leakage can be thoroughly avoided, and the vacuum degree of the vacuum cavity of the double-wall pipe can be maintained for a long time; when leakage occurs, the sealing plug is ejected out by high pressure in the vacuum cavity, falls into the discharge section of the quick-release connecting pipe and is blocked by the blocking structure, so that the sealing plug is prevented from flying out of the quick-release connecting pipe, a space is still reserved between the sealing plug and the discharge section for quick discharge of gas, and after repair is finished, the vacuum cavity is vacuumized again to plug the sealing plug back.
Drawings
FIG. 1 is a schematic structural view of a sealing plug of the quick-release high vacuum pressure relief device of the present invention in a body;
fig. 2 is a schematic structural view of the sealing plug of the quick-release high vacuum pressure relief device of the present invention when the sealing plug is in the quick-release connecting pipe.
Reference numerals: 1. a body; 13. a limiting step; 2. quick-release connecting pipes; 21. a bleed-off section; 211. a baffle ring; 212. a stop lever; 3. a sealing plug; 31. an O-shaped sealing ring; 32. a threaded hole; 4. clamping a hoop; 5. and the sealing ring is provided with a bracket.
Detailed Description
The embodiment of the quick release high vacuum pressure relief device of the present invention will be further explained with reference to fig. 1 and 2.
In the description of the present invention, it should be noted that, for the orientation words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and the positional relationship are indicated based on the orientation or the positional relationship shown in the drawings, and the description is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.
Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and "a plurality" or "a plurality" in the description of the invention means two or more unless a specific definition is explicitly provided.
The utility model provides a quick-release type high vacuum pressure relief device, includes body 1 with outer union coupling on the double-walled pipe, and body 1 is the tubulose, and the opening part of body 1 is provided with sealing plug 3, body 1 corresponds the opening part and is provided with spacing step 13, and sealing plug 3 supports on spacing step 13, the opening part of body 1 is connected with quick-release connection pipe 2, quick-release connection pipe 2 can be dismantled with body 1 and be connected, quick-release connection pipe 2 is including section 21 of releasing, the internal diameter of section 21 of releasing is greater than the external diameter of sealing plug 3, be provided with in the section 21 of releasing and block the stopper structure that sealing plug 3 passed.
In the present embodiment, the sealing plug 3 is used to seal the opening of the body 1, and preferably, a plurality of O-rings 31 are disposed on the circumferential side surface of the sealing plug 3, and the plurality of O-rings 31 are distributed along the axial direction, as shown in fig. 1, when the sealing plug 3 is plugged on the body 1, the O-rings 31 are sandwiched between the sealing plug 3 and the inner wall of the body 1, so as to achieve multi-stage sealing.
The body 1 in this embodiment is welded to the outer tube of the double-walled tube, which communicates with the vacuum chamber of the double-walled tube.
The body 1 is plugged with a sealing plug 3 to maintain the vacuum degree of the vacuum chamber of the double-walled pipe, as shown in fig. 1.
When the inner pipe leaks, the vacuum cavity is changed from negative pressure to positive pressure and is higher than the external pressure, the sealing plug 3 is ejected out, the ejected sealing plug 3 enters the quick-release connecting pipe 2 and is blocked by the blocking plug structure, the quick-release connecting pipe 2 is prevented from flying out, and the purpose of quick pressure release can be realized at the same time as the state shown in figure 2; after the inner tube is repaired, the vacuum pumping is needed again, the quick-release connecting tube 2 is taken down firstly, the sealing plug 3 is plugged back to the body 1 again to seal the body 1, and then the quick-release connecting tube 2 is installed back.
The stopper structure of the present embodiment preferably includes a stopper ring 211 and a stopper rod 212, where the stopper ring 211 is disposed inside the discharge section 21, an inner diameter of the stopper ring 211 is smaller than an outer diameter of the sealing plug 3, and the stopper rod 212 is located on a side of the stopper ring 211 facing the sealing plug 3.
The stop ring 211 is used for stopping the sealing plug 3 from flying away from the quick-release connecting pipe 2, when the sealing plug 3 is ejected out to the discharge section 21, the sealing plug 3 is stopped by the stop ring 211 and the stop rod 212, the stop rod 212 enables the sealing plug 3 to be partially tilted and not to completely attach to the stop ring 211, and the sealing plug 3 is prevented from being completely attached to the stop ring 211 again and cannot be decompressed.
Of course, in the present embodiment, it is preferable that a threaded hole 32 is formed in a side of the sealing plug 3 facing the quick-release connector 2, where the threaded hole 32 is a counter bore, and the quick-release connector 2 can be removed when performing other operations (such as vacuum compensation or vacuum detection), and a mechanism with a corresponding function is connected to the body 1, and the sealing plug 3 is temporarily pulled out by matching a screw of the mechanism with the threaded hole 32.
In this embodiment, it is preferable that the body 1 is connected with the quick-release connecting pipe 2 through a clamp 4, and a sealing ring 5 with a bracket is arranged between the body 1 and the quick-release connecting pipe 2.
The further preferred body 1 of this embodiment, both ends of quick-release connecting pipe 2 all adopt the same joint to make body 1, quick-release connecting pipe 2 can be connected each other through clamp 4 fast and dismantle or be connected the dismantlement with other mechanisms.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a quick-release type high vacuum pressure relief device which characterized in that: the quick-release pipe comprises a body connected with an upper outer pipe of a double-wall pipe, wherein the body is in a tubular shape, a sealing plug is arranged at the opening of the body, a limit step is arranged at the corresponding opening of the body, the sealing plug abuts against the limit step, a quick-release connecting pipe is connected to the opening of the body, the quick-release connecting pipe is detachably connected with the body and comprises a release section, the inner diameter of the release section is larger than the outer diameter of the sealing plug, and a stopper blocking structure for blocking the sealing plug to pass through is arranged in the release section.
2. The quick release high vacuum pressure relief device according to claim 1, wherein: the stop plug structure comprises a stop ring and a stop rod, the stop ring is arranged in the discharge section, the inner diameter of the stop ring is smaller than the outer diameter of the sealing plug, and the stop rod is located on one side, facing the sealing plug, of the stop ring.
3. The quick release high vacuum pressure relief device according to claim 2, wherein: a plurality of O-shaped sealing rings are arranged on the circumferential side face of the sealing plug and are distributed along the axial direction.
4. The quick release high vacuum pressure relief device according to claim 3, wherein: and one side of the sealing plug, which faces the quick-release connecting pipe, is provided with a threaded hole, and the threaded hole is a counter bore.
5. The quick release high vacuum pressure relief device according to claim 4, wherein: the body is connected with the quick-release connecting pipe through a clamping hoop.
6. The quick release high vacuum pressure relief device according to claim 5, wherein: and a sealing ring with a bracket is arranged between the body and the quick-release connecting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022221537.4U CN213809047U (en) | 2020-09-30 | 2020-09-30 | Quick-release high vacuum pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022221537.4U CN213809047U (en) | 2020-09-30 | 2020-09-30 | Quick-release high vacuum pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213809047U true CN213809047U (en) | 2021-07-27 |
Family
ID=76956838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022221537.4U Active CN213809047U (en) | 2020-09-30 | 2020-09-30 | Quick-release high vacuum pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213809047U (en) |
-
2020
- 2020-09-30 CN CN202022221537.4U patent/CN213809047U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 525 Xinda Road, Xinfeng Town, Nanhu District, Jiaxing City, Zhejiang Province, 314005 Patentee after: Zhejiang Yada Green Energy Technology Co.,Ltd. Country or region after: China Address before: 314001 Xinfeng Industrial Zone, Nanhu District, Jiaxing City, Zhejiang Province Patentee before: YADA PIPELINE SYSTEM Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |