CN201731127U - Two-stage dropping valve - Google Patents
Two-stage dropping valve Download PDFInfo
- Publication number
- CN201731127U CN201731127U CN2010202253045U CN201020225304U CN201731127U CN 201731127 U CN201731127 U CN 201731127U CN 2010202253045 U CN2010202253045 U CN 2010202253045U CN 201020225304 U CN201020225304 U CN 201020225304U CN 201731127 U CN201731127 U CN 201731127U
- Authority
- CN
- China
- Prior art keywords
- valve
- sleeve
- valve body
- spool
- stage dropping
- 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 - Fee Related
Links
- 238000000034 method Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model relates to a two-stage dropping valve, which comprises a valve body (1), a valve core (3) and a dropping throttle sleeve (4). A sleeve (2) is mounted at the bottom of the valve body (1); the valve core (3) is fixed into an inner cavity of the valve body (1) on the upper portion of the sleeve (2); and the dropping throttle sleeve (4) is mounted on the outer side of the valve core (3). The two-stage dropping valve can ensure work stability.
Description
Technical field
Field under the utility model particularly relates to a kind of two-stage dropping valve.
Background technique
In the existing P TA process units, the normal applying working condition of this valve of fluid level control valve LCV21353. is installed on the refining preheater E1/2-1211 outlet lime set pipeline:
Upstream pressure: 8.45MPa
Downstream pressure: 4.5MPa
Operating temperature: 246 degrees centigrade
Existing valve mechanism adopts the step-down of one-level sleeve, valve stem crack (once occurring a fracture in month 3 times when frequency is the highest) in use often appears, steam condensate can't be discharged, and then cause in the process units refining workshop section to be stopped, brought very big influence for the ordinary production of process units, bring very big economic loss to enterprise simultaneously. by thinking, pressure reduction is excessive before and after this valve, cause the spool vibrations excessive, after operation after a while, cause the spool metallicity to descend, and then cause the spool fracture.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of two-stage dropping valve, to improve working stability.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of two-stage dropping valve is provided, comprise valve body, spool and step-down orifice sleeve, described valve body bottom is equipped with sleeve, spool is fixed in the body cavity of upper cartridge, and the spool outside is equipped with the step-down orifice sleeve.
Described valve body top is by nut, and screw rod cooperates fixed cover.
Beneficial effect
The utility model can guarantee working stability.
Description of drawings
Fig. 1 is the utility model sectional view,
1-valve body, 2-sleeve, 3-spool, 4-orifice sleeve, 5-spiral wound gasket, 6-nut, 7-screw rod, 8-loam cake, 9-condiment pad, 10-high pressure filler group, 11-plug, 12-filler spacer, 13-Gland, 14-screw rod, 15-band supports butterfly spring, 16-2 type full-metallic hexagonal locking nuts, 17-hexagon thin nut closely-pitched, 18-spiral wound gasket, 19-spiral wound gasket, 20-hexagon head bolt, 21-standard type elastic washer, 22-hold-down grid.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiments only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As shown in Figure 1, a kind of two-stage dropping valve comprises valve body 1, spool 3 and step-down orifice sleeve 4, and described valve body 1 bottom is equipped with sleeve 2, and spool 3 is fixed in valve body 1 inner chamber on sleeve 2 tops, and spool 3 outsides are equipped with step-down orifice sleeve 4.Valve body 1 top is by nut 6, and screw rod 7 cooperates fixed cover 8.
Claims (2)
1. two-stage dropping valve, comprise valve body (1), spool (3) and step-down orifice sleeve (4), it is characterized in that: described valve body (1) bottom is equipped with sleeve (2), spool (3) is fixed in valve body (1) inner chamber on sleeve (2) top, and spool (3) outside is equipped with step-down orifice sleeve (4).
2. a kind of two-stage dropping valve according to claim 1 is characterized in that: described valve body (1) top is by nut (6), and screw rod (7) cooperates fixed cover (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202253045U CN201731127U (en) | 2010-06-13 | 2010-06-13 | Two-stage dropping valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202253045U CN201731127U (en) | 2010-06-13 | 2010-06-13 | Two-stage dropping valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201731127U true CN201731127U (en) | 2011-02-02 |
Family
ID=43522284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202253045U Expired - Fee Related CN201731127U (en) | 2010-06-13 | 2010-06-13 | Two-stage dropping valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201731127U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375616A (en) * | 2012-04-23 | 2013-10-30 | 维士威（上海）控制阀门有限公司 | Novel speed reducing control valve |
-
2010
- 2010-06-13 CN CN2010202253045U patent/CN201731127U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375616A (en) * | 2012-04-23 | 2013-10-30 | 维士威（上海）控制阀门有限公司 | Novel speed reducing control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20130613 |