CN201521709U - Labyrinth decompression valve - Google Patents
Labyrinth decompression valve Download PDFInfo
- Publication number
- CN201521709U CN201521709U CN2009202286756U CN200920228675U CN201521709U CN 201521709 U CN201521709 U CN 201521709U CN 2009202286756 U CN2009202286756 U CN 2009202286756U CN 200920228675 U CN200920228675 U CN 200920228675U CN 201521709 U CN201521709 U CN 201521709U
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- China
- Prior art keywords
- sleeve
- spiral
- casing
- boss
- fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a labyrinth decompression valve, which comprises a casing, a sleeve, a spiral shaft, a conical joint and a pressing nut. The labyrinth decompression valve is characterized in that one end of the sleeve is welded integrally with the casing, the conical joint is engaged with the inside of the other end of the sleeve while the pressing nut is connected to the outside of the other end of the sleeve through threads, an upper end of the casing is provided with a boss, the spiral shaft is arranged inside the casing, an upper end of the spiral shaft is a flange engaged with the boss, and the spiral shaft is provided with two spiral grooves opposite in direction. Distance between the spiral grooves is 10 to 30mm, and a retaining ring is arranged between the sleeve and the conical joint at a fluid inlet position. In work, energy exchange is generated between fluid and the spiral grooves so as to generate pumping action and forming a pumping reverse pressure head, thereby greatly reducing pressure of outlet fluid, and realizing the purposes of decompression and quantitative sampling with large decompression ratio, small flow, and stable outlet pressure and fluid flow.
Description
Technical field
The utility model relates to reduction valve, is a kind of mazy type reduction valve specifically.
Background technique
High pressure sample is carried out sample analysis to be needed to take a sample after the first step-down, and step-down ratio is big and flow is little.Existing dropping equipment is a lot, as restricting orifice, and pressure regulator valve etc., big step-down ratio, small flow and outlet pressure are stable, the requirement of stability of flow but individual equipment can't satisfy.Therefore, at high pressure sample, design that a kind of big step-down ratio, small flow and outlet pressure are stable, the mazy type reduction valve of stability of flow is very necessary.
Summary of the invention
The purpose of this utility model provides a kind of big step-down ratio, and small flow and outlet pressure are stable, the mazy type reduction valve of stability of flow.
For achieving the above object, the utility model adopts following technological scheme: the mazy type reduction valve, comprise housing, sleeve, screw axis, taper joint and gland nut, the end and the housing that it is characterized in that sleeve are integrally welded, cooperate with taper joint in the other end of sleeve, outward with gland nut by being threaded, there is a boss housing upper end, screw axis is positioned at the housing the inside, the upper end of screw axis is a flange, and flange cooperates with boss, and screw axis is provided with two sections spiral chutes that direction is opposite, distance between spiral chute and the spiral chute is 10～30mm, is provided with back-up ring between the sleeve at fluid input place and the taper joint.
During the utility model work, fluid is full of formed spiral mazy type space between spiral chute and the housing, on the one hand under the thrust that fluid makes progress, the flange of screw axis upper end matches with the boss on housing top screw axis can not be rotated, and then to the mobile generation resistance of medium, on the other hand, body and spiral chute generation energy interchange, produce pump action, and form the reverse pressure head of pumping, thereby greatly reduce the pressure of outlet fluid.By adjusting the gap between screw axis and the shell, make the leakage rate of spiral labyrinth structure consistent with sample flow, can reach big step-down ratio, small flow and outlet pressure are stable, the step-down of stability of flow, quantitative sampling purpose.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the screw shaft structure schematic representation;
Fig. 3 is the plan view of Fig. 2;
Fig. 4 is the shell construction schematic representation;
Fig. 5 is the plan view of Fig. 4.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described, but this embodiment should not be construed as restriction of the present utility model.
The utility model comprises housing 1, sleeve 2, screw axis 3, taper joint 4 and gland nut 5, the end and the housing 1 that it is characterized in that sleeve 2 are integrally welded, cooperate with taper joint 4 in the other end of sleeve 2, outward with gland nut 5 by being threaded, there is a boss 6 housing 1 upper end, screw axis 3 is positioned at housing 1 the inside, the upper end of screw axis 3 is a flange 7, flange 7 cooperates with boss 6, screw axis 3 is provided with two sections spiral chutes 8 that direction is opposite, 9, distance between spiral chute 8 and the spiral chute 9 is 10～30mm, is provided with back-up ring 10 between the sleeve 2 at fluid input place and the taper joint 4.
During the utility model work vertical the installation.
The content that is not described in detail in this specification belongs to the those skilled in the art known prior art.
Claims (1)
1. mazy type reduction valve, comprise housing (1), sleeve (2), screw axis (3), taper joint (4) and gland nut (5), it is characterized in that: an end of sleeve (2) and housing (1) are integrally welded, cooperate with taper joint (4) in the other end of sleeve (2), outward with gland nut (5) by being threaded, there is a boss (6) housing (1) upper end, screw axis (3) is positioned at housing (1) the inside, the upper end of screw axis (3) is flange (7), flange (7) cooperates with boss (6), screw axis (3) is provided with two sections spiral chutes (8) that direction is opposite, (9), distance between spiral chute (8) and the spiral chute (9) is 10～30mm, is provided with back-up ring (10) between sleeve at fluid input place (2) and the taper joint (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202286756U CN201521709U (en) | 2009-09-29 | 2009-09-29 | Labyrinth decompression valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202286756U CN201521709U (en) | 2009-09-29 | 2009-09-29 | Labyrinth decompression valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521709U true CN201521709U (en) | 2010-07-07 |
Family
ID=42507884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202286756U Expired - Lifetime CN201521709U (en) | 2009-09-29 | 2009-09-29 | Labyrinth decompression valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201521709U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454403A (en) * | 2011-12-02 | 2012-05-16 | 贵州航天凯山石油仪器有限公司 | Method and device for controlling flow velocity of high-pressure fluid |
| CN102914452A (en) * | 2012-10-19 | 2013-02-06 | 瑞安市良精石化机械厂 | Sampling device capable of reducing pressure of fluid in pipeline |
| CN103216217A (en) * | 2013-04-23 | 2013-07-24 | 东北石油大学 | Float-type flow stabilizer |
| CN114352782A (en) * | 2021-12-21 | 2022-04-15 | 上海空间推进研究所 | Micro-flow throttling device |
-
2009
- 2009-09-29 CN CN2009202286756U patent/CN201521709U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454403A (en) * | 2011-12-02 | 2012-05-16 | 贵州航天凯山石油仪器有限公司 | Method and device for controlling flow velocity of high-pressure fluid |
| CN102914452A (en) * | 2012-10-19 | 2013-02-06 | 瑞安市良精石化机械厂 | Sampling device capable of reducing pressure of fluid in pipeline |
| CN103216217A (en) * | 2013-04-23 | 2013-07-24 | 东北石油大学 | Float-type flow stabilizer |
| CN103216217B (en) * | 2013-04-23 | 2015-07-29 | 东北石油大学 | A kind of Float-type flow stabilizer |
| CN114352782A (en) * | 2021-12-21 | 2022-04-15 | 上海空间推进研究所 | Micro-flow throttling device |
| CN114352782B (en) * | 2021-12-21 | 2023-10-24 | 上海空间推进研究所 | Micro-flow throttling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100707 |