CN201884732U - High-pressure unloading valve - Google Patents
High-pressure unloading valve Download PDFInfo
- Publication number
- CN201884732U CN201884732U CN2010206892372U CN201020689237U CN201884732U CN 201884732 U CN201884732 U CN 201884732U CN 2010206892372 U CN2010206892372 U CN 2010206892372U CN 201020689237 U CN201020689237 U CN 201020689237U CN 201884732 U CN201884732 U CN 201884732U
- Authority
- CN
- China
- Prior art keywords
- valve
- unloading valve
- unloading
- valve seat
- 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 - Fee Related
Links
Abstract
A high-pressure unloading valve comprises a valve seat matched with a valve clack, which is connected with a valve rod. The ratio of fluid flow area of the valve seat and flow area of a fluid outlet of the unloading valve is 0.9 to 1.3, and because pressures at the valve seat and at the fluid outlet of the unloading valve are equal or near, the possibility of cavitation erosion is low, and the valve seat and the valve clack are not liable to be damaged.
Description
Technical field
The utility model belongs to the valve of pressure duct high pressure unloading, is a kind of high pressure unloading valve concretely.
Background technique
Existing high pressure unloading valve is in order to reach the purpose of smooth and easy off-load, usually the fluid inlet cross-section area of unloading valve causes inlet velocity excessive much smaller than fluid output, and fluid inlet and fluid output form very big pressure difference, cavitation phenomenon takes place easily, and valve seat and flap are produced damage.
The model utility content
The utility model will solve existing high pressure unloading valve cavitation phenomenon takes place easily, and valve seat and flap are produced the technical problem of damaging, and a kind of high pressure unloading valve of difficult generation cavitation phenomenon is provided.
In order to solve the problems of the technologies described above, the technological scheme that the utility model is taked is: a kind of high pressure unloading valve, comprise the valve seat that cooperates with the flap that is connected valve rod, and the ratio of the fluid flow area of valve seat and the circulation area of unloading valve fluid output is 0.9 to 1.3.
Because unloading valve fluid output and unloading valve fluid input height are extremely approaching, the potential variation of fluid can be disregarded, the ratio of the fluid flow area of valve seat and the circulation area of unloading valve fluid output is between 0.9 to 1.3, the flow velocity at two places is basic identical, then according to Bernoulli's equation, valve seat place and unloading valve fluid outlet pressure equate or are approaching, thereby the difficult cavitation phenomenon that takes place, and valve seat and flap are not fragile.
Orifice sleeve in valve rod and the valve body is slidingly matched, and orifice sleeve is communicated with unloading valve fluid inlet and unloading valve fluid output, and the fluid flow area of valve seat is connected the circulation area of unloading valve fluid output with orifice sleeve ratio is 0.9 to 1.3.
The utility model has the advantages that: the ratio of the fluid flow area of valve seat and the circulation area of unloading valve fluid output is between 0.9 to 1.3, valve seat place and unloading valve fluid outlet pressure equate or are approaching, thereby be difficult for cavitation phenomenon takes place, valve seat and flap are not fragile.
Description of drawings
An embodiment's of the utility model generalized section.
Embodiment
Accompanying drawings.
Figure mesohigh unloading valve is installed on the pressure duct, is in open mode.The valve rod lower end connects flap 2, and flap 2 cooperates with valve seat 1.Orifice sleeve 3 in the inner chamber of valve body 5 cooperates with valve stem slides.Orifice sleeve 3 is installed in the endoporus of setting sleeve 4, is communicated with the unloading valve fluid output by setting sleeve 4.The ratio that the fluid flow area S1 of present embodiment valve seat 1 and orifice sleeve 3 are communicated with the circulation area S2 of unloading valve fluid output is 1.Because unloading valve fluid output and unloading valve fluid input height are extremely approaching, the potential variation of fluid can be disregarded, the fluid flow area of valve seat 1 is identical with the circulation area that orifice sleeve 3 is communicated with the unloading valve fluid output, the flow velocity at two places is identical, then according to Bernoulli's equation, valve seat 1 place and unloading valve fluid outlet pressure equate, thereby the difficult cavitation phenomenon that takes place, and valve seat 1 and flap 2 are not fragile.The valve rod upper end connects driving power, and the driving power of present embodiment is cylinder.
The ratio of the fluid flow area of the utility model valve seat 1 and the circulation area of unloading valve fluid output is between 0.9 to 1.3, and valve seat 1 place and unloading valve fluid outlet pressure equate or is approaching, thereby the difficult cavitation phenomenon that takes place, and valve seat 1 and flap 2 are not fragile.
Claims (2)
1. high pressure unloading valve comprises the valve seat (1) that cooperates with the flap that is connected valve rod (2), it is characterized in that the ratio of the circulation area of the fluid flow area of valve seat (1) and unloading valve fluid output is 0.9 to 1.3.
2. high pressure unloading valve according to claim 1, it is characterized in that the orifice sleeve (3) in valve rod and the valve body (5) is slidingly matched, orifice sleeve (3) is communicated with unloading valve fluid inlet and unloading valve fluid output, and the fluid flow area of valve seat (1) is connected the circulation area of unloading valve fluid output with orifice sleeve (3) ratio is 0.9 to 1.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206892372U CN201884732U (en) | 2010-12-17 | 2010-12-17 | High-pressure unloading valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206892372U CN201884732U (en) | 2010-12-17 | 2010-12-17 | High-pressure unloading valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884732U true CN201884732U (en) | 2011-06-29 |
Family
ID=44182276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206892372U Expired - Fee Related CN201884732U (en) | 2010-12-17 | 2010-12-17 | High-pressure unloading valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201884732U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404579A (en) * | 2018-12-20 | 2019-03-01 | 天津市通洁高压泵制造有限公司 | A kind of extra-high pressure unloading valve |
-
2010
- 2010-12-17 CN CN2010206892372U patent/CN201884732U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404579A (en) * | 2018-12-20 | 2019-03-01 | 天津市通洁高压泵制造有限公司 | A kind of extra-high pressure unloading valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110629 Termination date: 20141217 |
|
| EXPY | Termination of patent right or utility model |