CN204062049U - LNG safety check open in usual - Google Patents
LNG safety check open in usual Download PDFInfo
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- CN204062049U CN204062049U CN201420422139.0U CN201420422139U CN204062049U CN 204062049 U CN204062049 U CN 204062049U CN 201420422139 U CN201420422139 U CN 201420422139U CN 204062049 U CN204062049 U CN 204062049U
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- lng
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Abstract
The utility model discloses a kind of LNG safety check open in usual, belong to technical field of LNG.LNG of the present utility model safety check open in usual, comprise valve body, being provided with in the through hole of described spool can the spool of relative sliding, the inwall of described through hole and the front end of spool are equipped with the conical seal (contact) face that can cooperatively interact, the front end of described spool is butted on the inwall step of through hole end by spring, makes tool between the conical seal (contact) face of spool front end and the conical seal (contact) face of through-hole wall at regular intervals; The outer wall of described spool is provided with other hole, and the tail end of described spool is provided with the liquid pass hole being communicated with other hole; Be connected with at the entrance point of described through hole the tail end that pipe joint one is butted on spool, the outlet end of described through hole is connected with pipe joint two.LNG of the present utility model safety check open in usual, is installed between LNG storage tank and LNG immersed pump, and for solving safety check two ends conducting under minute-pressure state, under high pressure or the large flow velocity of large discharge, safety check two ends forward is closed and prevented LNG to be transferred back the problem of LNG storage tank.
Description
Technical field
The utility model relates to technical field of LNG, especially a kind of LNG safety check open in usual.
Background technique
LNG(Liquefied Natural Gas), i.e. the english abbreviation of LNG Liquefied natural gas.Rock gas is the inflammable gas that natural opening extraction comes in gas field, and main component is made up of methane.LNG is cooled to-162 DEG C by the rock gas of gaseous state at ambient pressure, makes it to condense into liquid; Greatly can save storage and transportation space after natural gas liquefaction, and have that calorific value is large, performance high.
Store with the equipment of conveying at existing LNG, the equipment such as pump can be used to pump, LNG is when pumping, the inner shape in pump pond can be made to be negative pressure, to make pump while extraction LNG liquid, partial gas phase gas can be drawn back, also just easily there is gas-liquid mixed phenomenon in LNG immersed pump, therefore often occur that pump discharge pressure is unstable, cause cavitation, damage component in pump for a long time.
Model utility content
Goal of the invention of the present utility model is: for above-mentioned Problems existing, a kind of LNG safety check open in usual is provided, be installed between LNG storage tank and LNG immersed pump, for solving safety check two ends conducting under minute-pressure state, under high pressure or the large flow velocity of large discharge, safety check two ends forward is closed and is prevented LNG to be transferred back the problem of LNG storage tank; Meanwhile, also solve the LNG gas phase when LNG immersed pump starts and take out phenomenon, guarantee that pump only can extract LNG liquid phase medium, forward closes LNG only in the pipe-line system being delivered to needs, can meet the normal usage requirement of LNG immersed pump.When being in low pressure, the two ends of this safety check are communicated with, the pressure of balance LNG storage tank and LNG immersed pump.
The technical solution adopted in the utility model is as follows:
LNG of the present utility model safety check open in usual, comprise valve body, being provided with in the through hole of described valve body can the spool of relative sliding, the inwall of described through hole and the front end of spool are equipped with the conical seal (contact) face that can cooperatively interact, the front end of described spool is butted on the inwall step of through hole end by spring, makes tool between the conical seal (contact) face of spool front end and the conical seal (contact) face of through-hole wall at regular intervals; The outer wall of described spool is provided with other hole, and the tail end of described spool is provided with the liquid pass hole being communicated with other hole; Be connected with at the entrance point of described through hole the tail end that pipe joint one is butted on spool, the outlet end of described through hole is connected with pipe joint two.
Owing to have employed said structure, valve body screws in valve body built with spring, spool, pipe joint one, spool is pushed up to spring by pipe joint one simultaneously, make spring can be applied to the certain precompression of spool, guarantee that the sealing surface of spool and valve body departs from, be in opening state, the other end and the LNG immersed pump export pipeline of pipe joint one are weldingly connected; The other end and the LNG storage tank gas phase pipeline of pipe joint two are weldingly connected, and spool and valve inner have one section of free travel, and spool departs from valve body sealing surface under the action of the spring, and be opening state, gas phase gas can be passed through interstitial flow between spool and valve body.When the side of pipe joint one has the LNG liquid of the large flow velocity of large discharge to come, LNG liquid can force spool travel, namely LNG acts on the power of spool higher than the active force at spring, the active force making spool overcome spring moves right to valve body sealing surface, valve forward is closed, and blocks LNG and continues to flow to pipe joint two; When the side flow velocity of pipe joint one recovers normally, LNG liquid effects reduces in the power of spool, and spool departs from valve body sealing surface under the action of the spring, flows to be formed again with the side of pipe joint two and be communicated with in the side of pipe joint one, and valve recovers to open.LNG of the present utility model safety check open in usual, is installed between LNG storage tank and LNG immersed pump, and for solving safety check two ends conducting under minute-pressure state, under high pressure or the large flow velocity of large discharge, safety check two ends forward is closed and prevented LNG to be transferred back the problem of LNG storage tank.
LNG of the present utility model safety check open in usual, described pipe joint two overcoat has nut alive, and described nut thread alive is connected to the outer wall of valve outlet end.
Owing to have employed said structure, on pipe joint two, cover has nut alive, and nut of living screws on valve body outside thread, and screwing nut alive by the conical seal (contact) face pinch seal of valve body spherical seal surface and pipe joint, can be convenient to installation and removal.
LNG of the present utility model safety check open in usual, on the outer wall of described spool, uniform ring is furnished with 4 other holes, and described through-hole wall is provided with the cavity relative with other hole.
Owing to have employed said structure, this cavity is convenient to fluid behind other hole, carries out in this cavity again after conical seal (contact) face, discharges, guarantee the circulation of LNG stream body from the outlet end of valve body.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:
1, LNG of the present utility model safety check open in usual, be installed between LNG storage tank and LNG immersed pump, for solving safety check two ends conducting under minute-pressure state, under high pressure or the large flow velocity of large discharge, safety check two ends forward is closed and is prevented LNG to be transferred back the problem of LNG storage tank;
2, LNG of the present utility model safety check open in usual, also solve the LNG gas phase when LNG immersed pump starts and take out phenomenon, guarantee that pump only can extract LNG liquid phase medium, forward closes LNG only in the pipe-line system being delivered to needs, can meet the normal usage requirement of LNG immersed pump; .
3, LNG of the present utility model safety check open in usual, low temperature resistant, and during low pressure, safety check two ends are opening state, and during high pressure or when the LNG stream amount velocity ratio of safety check is larger, safety check two ends forward is closed.
Accompanying drawing explanation
The utility model illustrates by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the using state figure of LNG safety check open in usual in the utility model;
Fig. 2 is the structural representation of LNG safety check open in usual in the utility model.
Mark in figure: 1-storage tank, 2,7-liquid phase, 3,6-gas phase, 4-pump pond, 5-immersed pump, 8-safety check, 8-1-valve body, 8-2-spool, 8-3-spring, 8-4-lives nut, 8-5-pipe joint one, 8-6-pipe joint two.
Embodiment
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification (comprising any accessory claim, summary), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
As shown in Figure 1, LNG of the present utility model safety check open in usual, comprise valve body 8-1, being provided with in the through hole of described valve body 8-1 can the spool 8-2 of relative sliding, the inwall of described through hole and the front end of spool 8-2 are equipped with the conical seal (contact) face that can cooperatively interact, the front end of described spool 8-2 is butted on the inwall step of through hole end by spring 8-3, makes tool between the conical seal (contact) face of spool 8-2 front end and the conical seal (contact) face of through-hole wall at regular intervals; On the outer wall of described spool 8-2, uniform ring is furnished with 4 other holes, and described through-hole wall is provided with the cavity relative with other hole, and the tail end of described spool 8-2 is provided with the liquid pass hole being communicated with other hole; The tail end that pipe joint one 8-5 is butted on spool 8-2 is connected with at the entrance point of described through hole, the outlet end of described through hole is connected with pipe joint two 8-6, described pipe joint two 8-6 overcoat has nut 8-4 alive, and described nut 8-4 alive is threadedly connected to the outer wall of valve body 8-1 outlet end.
As shown in Figure 2, LNG of the present utility model safety check open in usual, in use, is installed between LNG storage tank 8-1 and LNG immersed pump 8-5, and for solving safety check two ends conducting under minute-pressure state, wherein LNG immersed pump 8-5 is placed in the 8-4 of pump pond.
LNG of the present utility model safety check open in usual, at valve body 8-1 built with spring 8-3, spool 8-2, pipe joint one 8-5 screws in valve body 8-1, spool 8-2 is pushed up to spring 8-3 by pipe joint one 8-5 simultaneously, make spring 8-3 can be applied to the certain precompression of spool 8-2, guarantee that the sealing surface of spool 8-2 and valve body 8-1 departs from, be in opening state, the pipe joint one 8-5 the other end and LNG immersed pump export pipeline are weldingly connected, on pipe joint two 8-6, cover has nut 8-4 alive, the nut 8-4 that lives screws on valve body 8-1 outside thread, screwing nut 8-4 alive can by the conical seal (contact) face pinch seal of valve body 8-1 spherical seal surface and pipe joint two 8-6, the other end and the LNG storage tank gas phase pipeline of pipe joint two 8-6 are weldingly connected, there is one section of free travel spool 8-2 and valve body 8-1 inside, spool 8-2 departs from valve body 8-1 sealing surface under the effect of spring 8-3, for opening state, gas phase gas can be passed through interstitial flow between spool 2 and valve body 8-1,
When the side of pipe joint one 8-5 has the LNG liquid of the large flow velocity of large discharge to come, LNG liquid can force spool 8-2 displacement, namely LNG acts on the power of spool 8-2 higher than the active force at spring 8-3, the active force making spool 2 overcome spring 8-3 moves right to valve body 8-1 sealing surface, valve forward is closed, and blocks LNG and continues to flow to pipe joint two 8-6; When the side flow velocity of connecting head 8-5 recovers normally, LNG liquid effects reduces in the power of spool 8-2, spool 8-2 departs from valve body 8-1 sealing surface under the effect of spring 8-3, flows to be formed again with the side of pipe joint two 8-6 and be communicated with in the side of pipe joint one 8-5, and valve recovers to open.
LNG of the present utility model safety check open in usual, during low pressure, two ends are communicated with, the pressure of balance LNG storage tank and LNG immersed pump; Simultaneously, also solve the LNG gas phase when LNG immersed pump starts and take out phenomenon, guarantee that pump only can extract LNG liquid phase medium, forward is closed and is prevented LNG to be transferred back LNG storage tank, LNG only in the pipe-line system being delivered to needs, can meet the normal usage requirement of LNG immersed pump.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (3)
1.LNG safety check open in usual, it is characterized in that: it comprises valve body (8-1), being provided with in the through hole of described valve body (8-1) can the spool (8-2) of relative sliding, the front end of the inwall of described through hole and spool (8-2) is equipped with the conical seal (contact) face that can cooperatively interact, the front end of described spool (8-2) is butted on the inwall step of through hole end by spring (8-3), makes tool between the conical seal (contact) face of spool (8-2) front end and the conical seal (contact) face of through-hole wall at regular intervals; The outer wall of described spool (8-2) is provided with other hole, and the tail end of described spool (8-2) is provided with the liquid pass hole being communicated with other hole; Be connected with at the entrance point of described through hole the tail end that pipe joint one (8-5) is butted on spool (8-2), the outlet end of described through hole is connected with pipe joint two (8-6).
2. LNG safety check open in usual as claimed in claim 1, is characterized in that: described pipe joint two (8-6) overcoat has nut alive (8-4), and described nut alive (8-4) is threadedly connected to the outer wall of valve body (8-1) outlet end.
3. LNG safety check open in usual as claimed in claim 1 or 2, is characterized in that: on the outer wall of described spool (8-2), uniform ring is furnished with 4 other holes, and described through-hole wall is provided with the cavity relative with other hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420422139.0U CN204062049U (en) | 2014-07-30 | 2014-07-30 | LNG safety check open in usual |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420422139.0U CN204062049U (en) | 2014-07-30 | 2014-07-30 | LNG safety check open in usual |
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| Publication Number | Publication Date |
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| CN204062049U true CN204062049U (en) | 2014-12-31 |
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| CN201420422139.0U Active CN204062049U (en) | 2014-07-30 | 2014-07-30 | LNG safety check open in usual |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654840A (en) * | 2017-10-31 | 2018-02-02 | 成都华气厚普机电设备股份有限公司 | A kind of indexing hydrogen cell automobile is hydrogenated with rifle |
-
2014
- 2014-07-30 CN CN201420422139.0U patent/CN204062049U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654840A (en) * | 2017-10-31 | 2018-02-02 | 成都华气厚普机电设备股份有限公司 | A kind of indexing hydrogen cell automobile is hydrogenated with rifle |
| CN107654840B (en) * | 2017-10-31 | 2023-09-05 | 厚普清洁能源(集团)股份有限公司 | Indexing type hydrogen fuel cell automobile hydrogenation gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 610041 No.3, floor 11, building 6, no.599, shijicheng South Road, Chengdu high tech Zone, China (Sichuan) pilot Free Trade Zone, Chengdu City, Sichuan Province Patentee after: Houpu clean energy Co.,Ltd. Address before: 610041 D, Tianfu Software Park, 216 century South Road, Chengdu hi tech Zone, Sichuan, China Patentee before: CHENGDU HUAQI HOUPU HOLDING Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.3, 11th floor, building 6, no.599, shijicheng South Road, Chengdu hi tech Zone, China (Sichuan) pilot Free Trade Zone, Chengdu, Sichuan 610041 Patentee after: Houpu clean energy (Group) Co.,Ltd. Address before: No.3, 11th floor, building 6, no.599, shijicheng South Road, Chengdu hi tech Zone, China (Sichuan) pilot Free Trade Zone, Chengdu, Sichuan 610041 Patentee before: Houpu clean energy Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |