CN204062040U - A kind of high-pressure air reduction valve - Google Patents
A kind of high-pressure air reduction valve Download PDFInfo
- Publication number
- CN204062040U CN204062040U CN201420488749.0U CN201420488749U CN204062040U CN 204062040 U CN204062040 U CN 204062040U CN 201420488749 U CN201420488749 U CN 201420488749U CN 204062040 U CN204062040 U CN 204062040U
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- main valve
- piston
- cavity
- valve body
- pressure air
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- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a kind of high-pressure air reduction valve, comprise main valve and pilot valve, described main valve comprises main valve body and is located at the mangetic core assembly in main valve body; The middle lower portion of main valve body arranges a valve-rod cavity, and middle upper portion arranges a piston cavity, and left side arranges an inlet passage be communicated with valve-rod cavity, and right side arranges an outlet passage; Mangetic core assembly comprises main valve stem, main valve clack, spring and piston ring.Arrange the piston cylinder that bottom surface central authorities are provided with stem through-hole in piston cavity, piston ring is located in piston cavity by this piston cylinder; The bottom surface of left one side of something of this piston cylinder is fitted in the inner bottom surface of piston cavity, has a gap and form exhaust cavity between the bottom surface of right one side of something of this piston cylinder and the inner bottom surface of piston cavity.High-pressure air reduction valve of the present utility model, make piston cavity not participate in the expansion of flowing medium, thus the ice solving outlet side blocks up problem.
Description
Technical field
The utility model relates to a kind of high-pressure air reduction valve.
Background technique
The small volume of the piston cavity of existing high-pressure air reduction valve, though structure is compact, can effect of easing stress not good, pressure after valve is stable not, and be communicated with the outlet plenum of main valve stem, when inlet pressure is the high-pressure air reduction valve of 30MPa ~ 40MPa, because of the expansion of flowing medium because of piston cavity, make outlet side pole easily produce ice and block up phenomenon, thus have impact on its service behaviour.
Model utility content
The purpose of this utility model is the defect overcoming prior art, provides a kind of high-pressure air reduction valve, and it can make piston cavity not participate in the expansion of flowing medium, thus the ice solving outlet side blocks up problem.
The purpose of this utility model is achieved in that a kind of high-pressure air reduction valve, comprises main valve and pilot valve, and described main valve comprises main valve body and is located at the mangetic core assembly in main valve body; The middle lower portion of described main valve body arranges a valve-rod cavity, and the middle upper portion of described main valve body arranges a piston cavity, and the left side of described main valve body arranges an inlet passage be communicated with described valve-rod cavity, and the right side of described main valve body arranges an outlet passage; Described mangetic core assembly comprises main valve stem, the main valve clack be located on main valve stem, the spring be enclosed within main valve stem, be connected to main valve stem upper end and be arranged in the piston ring of piston cavity; Described piston cavity is divided into piston upper chamber and piston cavity of resorption by described piston ring, described main valve body is also offered a throttle orifice described inlet passage and piston upper chamber are communicated with; Wherein, arrange the piston cylinder that bottom surface central authorities are provided with stem through-hole in described piston cavity, described piston ring is located in described piston cavity by this piston cylinder; The bottom surface of left one side of something of this piston cylinder is fitted in the inner bottom surface of described piston cavity, between the bottom surface of right one side of something of this piston cylinder and the inner bottom surface of described piston cavity, there is a gap and form exhaust cavity, making medium be opened in downstream pressure passage on described main valve body and described outlet passage by exhaust cavity, successively and be communicated with and discharge.
Above-mentioned high-pressure air reduction valve, wherein, the lower end of described valve-rod cavity is closed by a bottom flange.
Above-mentioned high-pressure air reduction valve, wherein, the upper end of described piston cavity is closed by a bonnet.
Above-mentioned high-pressure air reduction valve, wherein, described mangetic core assembly also comprises one and to be sleeved on main valve stem and to be positioned at the gimbal of the below of described piston ring.
The technological scheme of high-pressure air reduction valve of the present utility model, adopts the piston cylinder of special construction, piston cavity and medium is isolated by the outlet plenum of main valve stem, make piston cavity not participate in the expansion of flowing medium, thus the ice solving outlet side blocks up problem.
Accompanying drawing explanation
Fig. 1 is the external structure schematic diagram of high-pressure air reduction valve of the present utility model;
Fig. 2 is the sectional drawing of the main valve of high-pressure air reduction valve of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to Fig. 1 and Fig. 2, a kind of high-pressure air reduction valve of the present utility model, comprises main valve 10 and pilot valve 20.The mangetic core assembly that main valve 10 comprises main valve body 1 and is located in main valve body 1; Wherein:
The middle lower portion of main valve body 1 arranges a valve-rod cavity 11, and the middle upper portion of main valve body 1 arranges a piston cavity 12, and the left side of main valve body 1 arranges an inlet passage 13 be communicated with valve-rod cavity 11, and the right side of main valve body 1 arranges an outlet passage 14; The lower end in main valve stem chamber 11 is closed by a bottom flange 2; The upper end of piston cavity 12 is closed by a bonnet 3; The piston cylinder 4 that one bottom surface central authorities are provided with stem through-hole is set in piston cavity 12, the bottom surface of left one side of something of this piston cylinder 4 is fitted in the inner bottom surface of piston cavity 12, has a gap and form exhaust cavity 40 between the bottom surface of right one side of something of this piston cylinder 4 and the inner bottom surface of piston cavity 12; Exhaust cavity 40 is directly communicated with outlet passage 14 by the downstream pressure passage 15 that is opened on main valve body 1;
Mangetic core assembly comprises main valve stem 5, the main valve clack 50 be located on main valve stem, the spring 6 be enclosed within main valve stem 5, be connected to the piston ring 7 of the upper end of main valve stem 5; Piston ring 7 is located in piston cylinder 4, and piston cavity 12 is divided into piston upper chamber 71 and piston cavity of resorption 72 by piston ring 7; Main valve stem 5 is positioned at the gimbal 8 of the below of piston ring 7;
Valve body 1 is also offered a throttle orifice (not shown) be communicated with piston upper chamber by inlet passage 13;
The working principle of a kind of high-pressure air reduction valve of the present utility model is:
Medium is by being entered by inlet passage 13 and being entered the top (piston upper chamber 41) of piston ring 7 by throttle orifice through pilot valve 20, area due to piston ring 7 is greater than the area of main valve clack 50, piston ring 7 overcomes spring 6 power and moves down with main valve stem 5 under the effect of pressure medium, promote main valve clack 50 leave the valve port of main valve body 1 and open valve-rod cavity 11, along with the increase of valve port opening, medium is successively by exhaust cavity 40, downstream pressure passage 15 and outlet passage 14 are discharged and are entered the below (piston cavity of resorption 42) of piston ring 7 simultaneously, piston cavity 12 is made not participate in the expansion of flowing medium, thus the ice solving outlet side blocks up problem.When downstream pressure exceedes set pressure, promote Regulation spring piston ring 7 moving compression pilot valve 20, pilot valve flap moves to closing direction thereupon, medium above inflow piston ring 7 is reduced, pressure also declines thereupon, main valve clack 50 now under the promotion of spring 6 power on move, main valve clack 50 is reduced with the valve port gap of main valve body 1, rate-of flow also reduces thereupon, makes downstream pressure also drop to new balance thereupon.Otherwise when downstream pressure is lower than set pressure, main valve clack 50 increases with the gap of the valve port of main valve body 1, and rate-of flow also increases, and makes downstream pressure also increase and reaches new balance thereupon thereupon.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, when not departing from spirit and scope of the present utility model, various conversion or modification can also be made, therefore all equivalent technological schemes also should belong to category of the present utility model, should be limited by each claim.
Claims (4)
1. a high-pressure air reduction valve, comprises main valve and pilot valve, and described main valve comprises main valve body and is located at the mangetic core assembly in main valve body; The middle lower portion of described main valve body arranges a valve-rod cavity, and the middle upper portion of described main valve body arranges a piston cavity, and the left side of described main valve body arranges an inlet passage be communicated with described valve-rod cavity, and the right side of described main valve body arranges an outlet passage; Described mangetic core assembly comprises main valve stem, the main valve clack be located on main valve stem, the spring be enclosed within main valve stem, be connected to main valve stem upper end and be arranged in the piston ring of piston cavity; Described piston cavity is divided into piston upper chamber and piston cavity of resorption by described piston ring, described main valve body is also offered a throttle orifice described inlet passage and piston upper chamber are communicated with; It is characterized in that,
Arrange the piston cylinder that bottom surface central authorities are provided with stem through-hole in described piston cavity, described piston ring is located in described piston cavity by this piston cylinder; The bottom surface of left one side of something of this piston cylinder is fitted in the inner bottom surface of described piston cavity, between the bottom surface of right one side of something of this piston cylinder and the inner bottom surface of described piston cavity, there is a gap and form exhaust cavity, making medium be opened in downstream pressure passage on described main valve body and described outlet passage by exhaust cavity, successively and be communicated with and discharge.
2. high-pressure air reduction valve according to claim 1, is characterized in that, the lower end of described valve-rod cavity is closed by a bottom flange.
3. high-pressure air reduction valve according to claim 1, is characterized in that, the upper end of described piston cavity is closed by a bonnet.
4. high-pressure air reduction valve according to claim 1, is characterized in that, described mangetic core assembly also comprises one and to be sleeved on main valve stem and to be positioned at the gimbal of the below of described piston ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420488749.0U CN204062040U (en) | 2014-08-28 | 2014-08-28 | A kind of high-pressure air reduction valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420488749.0U CN204062040U (en) | 2014-08-28 | 2014-08-28 | A kind of high-pressure air reduction valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204062040U true CN204062040U (en) | 2014-12-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420488749.0U Expired - Lifetime CN204062040U (en) | 2014-08-28 | 2014-08-28 | A kind of high-pressure air reduction valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204062040U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065683A (en) * | 2015-07-20 | 2015-11-18 | 江苏通达船用阀泵有限公司 | Novel air reducing valve |
| CN112923118A (en) * | 2021-01-19 | 2021-06-08 | 武汉市天毅达测控科技有限公司 | Shock-resistant pilot-operated gas stop valve |
| CN112943994A (en) * | 2021-03-05 | 2021-06-11 | 星河动力(北京)空间科技有限公司 | Self-feedback adjusting type pressure reducing valve |
-
2014
- 2014-08-28 CN CN201420488749.0U patent/CN204062040U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065683A (en) * | 2015-07-20 | 2015-11-18 | 江苏通达船用阀泵有限公司 | Novel air reducing valve |
| CN112923118A (en) * | 2021-01-19 | 2021-06-08 | 武汉市天毅达测控科技有限公司 | Shock-resistant pilot-operated gas stop valve |
| CN112943994A (en) * | 2021-03-05 | 2021-06-11 | 星河动力(北京)空间科技有限公司 | Self-feedback adjusting type pressure reducing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201814 Shanghai public road, Jiading District, No. 111 Patentee after: SHANGHAI VALVE FACTORY CO.,LTD. Address before: 201814 Shanghai public road, Jiading District, No. 111 Patentee before: SHANGHAI VALVE FACTORY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141231 |