CN101749464A - Throttle expansion valve - Google Patents
Throttle expansion valve Download PDFInfo
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- CN101749464A CN101749464A CN200810229667A CN200810229667A CN101749464A CN 101749464 A CN101749464 A CN 101749464A CN 200810229667 A CN200810229667 A CN 200810229667A CN 200810229667 A CN200810229667 A CN 200810229667A CN 101749464 A CN101749464 A CN 101749464A
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- pressure
- expansion valve
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- throttle expansion
- voltage terminal
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Abstract
The invention relates to a throttle expansion valve used on occasions of large flow rate and low pressure difference, particularly on occasion of low-pressure gas treatment. The provided throttle expansion valve is suitable for being used on occasions of large flow rate and low pressure difference, and has little fluctuation in the flow rate. The throttle expansion valve comprises a shell body. The two sides of the shell body are respectively a high-pressure end and a low-pressure end. The key points of the structure of the throttle expansion valve are as follows: corresponding to the high-pressure end and the low-pressure end, a high-pressure partition plate and a low-pressure partition plate with a through hole are respectively arranged in the shell body; a flow release cone of a valve core is arranged on a flow release hole of the high-pressure partition plate, a guide rod on the valve core is arranged in a guide hole of the high-pressure partition plate, and the right end of the valve core is connected with the low-pressure partition plate by an elastic piece.
Description
Technical field:
The present invention relates to a kind of throttle expansion valve that is used for big flow and low pressure difference occasion, particularly a kind of throttle expansion valve that is used for low-pressure fuel gas processing occasion.
Background technique:
The throttle expansion valve of prior art, the overwhelming majority is to be used for refrigeration industry and gas separation industries, the high pressure side of throttle expansion valve and low voltage side pressure reduction are very big, the high pressure side of part operating mode is a liquid, low voltage side is a gas, so the structural type of existing throttle expansion valve is needle-valve, stopcock or membrane valve.
When big flow and low pressure difference, underfed or the excessive problem of volume can appear in traditional needle-valve, stopcock and membrane valve; Needle-valve is applicable to big pressure reduction, small flow and high pressure occasion, and general work pressure is greater than 1MPa, and pressure reduction is greater than 0.5MPa, and the valve passage area of passage is little, valve body is little, flow is little, and significant discomfort is with big flow and low pressure difference; Stopcock also is to be applicable to big pressure reduction, small flow and high pressure occasion, and general work pressure is greater than 0.5MPa, and pressure reduction is greater than 0.1MPa, and the valve passage area of passage is little, valve body is little, flow is little, and significant discomfort is with big flow and low pressure difference; Membrane valve also is to be applicable to big pressure reduction, small flow and high pressure occasion, and general work pressure is greater than 0.5MPa, and pressure reduction is greater than 0.2MPa, and the valve passage area of passage is big slightly, valve body is big slightly, flow is big slightly, but the occasion of inapplicable big flow and low pressure difference.And, the feasible adjusting poor accuracy that adopts above-mentioned valve of the operating mode of low pressure difference, control mechanism requires high, and feedback time requires height.
Be used for low-pressure fuel gas and handle the throttle expansion valve of occasion, general work pressure is about 0.1MPa, and pressure reduction is at 0.01MPa～0.05MPa, and pressure reduction is adjusted precision about 0.001MPa, and flow is greater than 500Nm
3/ h, so, need special valve to realize the throttling expansion function.
Summary of the invention:
The present invention is exactly at the problems referred to above, and a kind of little throttle expansion valve of flowed fluctuation that uses under the occasion of big flow, low pressure difference that is applicable to is provided.
For achieving the above object, the present invention adopts following technological scheme, the present invention includes housing, the both sides of housing are respectively high voltage terminal, low voltage terminal, be respectively arranged with the high pressure dividing plate, have the low voltage partition plate of through hole corresponding to high voltage terminal, low voltage terminal in its structure outline housing, the discharge orifice of high pressure dividing plate is provided with the earial drainage awl of spool, and the spool top guide bar is arranged in the guide hole of high pressure dividing plate, and the right-hand member of spool links to each other with low voltage partition plate by elastic component.
Beneficial effect of the present invention:
Throttle expansion valve of the present invention goes for the occasion of big flow, low pressure difference, because the cooperation of discharge orifice and earial drainage awl, when keeping the convenient pressure difference, flow can have bigger variable quantity, the pressure surge and the bigger problem of flowed fluctuation of needle-valve, stopcock or membrane valve can not occur.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is that elastic component is the structural representation of the present invention of bellows.
Embodiment:
The present invention includes housing 1, the both sides of housing 1 are respectively high voltage terminal 13, low voltage terminal 2, be respectively arranged with high pressure dividing plate 9, have the low voltage partition plate 3 of through hole 5 corresponding to high voltage terminal 13, low voltage terminal 2 in the housing 1, the discharge orifice 8 of high pressure dividing plate 9 is provided with the earial drainage awl 7 of spool 6, spool 6 top guide bars 11 are arranged in the guide hole 10 of high pressure dividing plate 9, and the right-hand member of spool 6 links to each other with low voltage partition plate 3 by elastic component 4.
During use, have pressure reduction between the high voltage terminal 13 of expansion valve of the present invention, the low voltage terminal 2, gas makes high voltage terminal 13 and low voltage terminal 2 keep the pressure difference of setting by flowing out between the earial drainage awl 7 under discharge orifice 8 on the high pressure dividing plate 9 and elastic component 4 effects.
Claims (4)
1. throttle expansion valve, comprise housing (1), the both sides of housing (1) are respectively high voltage terminal (13), low voltage terminal (2), it is characterized in that in the housing (1) being respectively arranged with high pressure dividing plate (9), having the low voltage partition plate (3) of through hole (5) corresponding to high voltage terminal (13), low voltage terminal (2), the discharge orifice (8) of high pressure dividing plate (9) is provided with the earial drainage awl (7) of spool (6), spool (6) top guide bar (11) is arranged in the guide hole (10) of high pressure dividing plate (9), and the right-hand member of spool (6) links to each other by the same low voltage partition plate of elastic component (4) (3).
2. throttle expansion valve according to claim 1 is characterized in that earial drainage awl (7) is provided with two of symmetries.
3. throttle expansion valve according to claim 1, it is characterized in that elastic component (4) is a bellows (14), bellows (14) links to each other by the cavity (12) of the same high voltage terminal of conduit (15) (13), and earial drainage awl (7) is arranged on cavity (12) side of the high voltage terminal (13) of high pressure dividing plate (9).
4. throttle expansion valve according to claim 1 is characterized in that the discharge orifice (8) on the high pressure dividing plate (9) is more than 2 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102296673A CN101749464B (en) | 2008-12-12 | 2008-12-12 | Throttle expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102296673A CN101749464B (en) | 2008-12-12 | 2008-12-12 | Throttle expansion valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101749464A true CN101749464A (en) | 2010-06-23 |
| CN101749464B CN101749464B (en) | 2011-08-10 |
Family
ID=42476888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102296673A Expired - Fee Related CN101749464B (en) | 2008-12-12 | 2008-12-12 | Throttle expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101749464B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121445A (en) * | 2014-07-27 | 2014-10-29 | 成都国光电子仪表有限责任公司 | Bolt-type fuel gas pressure reducing and regulating tube |
| CN104121446A (en) * | 2014-07-27 | 2014-10-29 | 成都国光电子仪表有限责任公司 | Detachable and replaceable tubular pressure reducer |
| CN114294463A (en) * | 2021-12-27 | 2022-04-08 | 杭州电子科技大学 | Three-fork valve core type super-clean valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060196476A1 (en) * | 2005-02-28 | 2006-09-07 | Caterpillar Inc. | Pressure relief valve |
| CN2784699Y (en) * | 2005-03-24 | 2006-05-31 | 黄克敏 | Pressure stable throttle valve |
| CN2924214Y (en) * | 2006-04-20 | 2007-07-18 | 钱志海 | Suction expansion valve |
-
2008
- 2008-12-12 CN CN2008102296673A patent/CN101749464B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121445A (en) * | 2014-07-27 | 2014-10-29 | 成都国光电子仪表有限责任公司 | Bolt-type fuel gas pressure reducing and regulating tube |
| CN104121446A (en) * | 2014-07-27 | 2014-10-29 | 成都国光电子仪表有限责任公司 | Detachable and replaceable tubular pressure reducer |
| CN104121445B (en) * | 2014-07-27 | 2016-05-25 | 成都国光电子仪表有限责任公司 | Bolt type gas pressure-reducing surge pipe |
| CN104121446B (en) * | 2014-07-27 | 2016-05-25 | 成都国光电子仪表有限责任公司 | Disassembling and replacing type tubular type pressure reducer |
| CN114294463A (en) * | 2021-12-27 | 2022-04-08 | 杭州电子科技大学 | Three-fork valve core type super-clean valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101749464B (en) | 2011-08-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20141212 |
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| EXPY | Termination of patent right or utility model |