CN203809703U - Ultrahigh-pressure steam release valve - Google Patents
Ultrahigh-pressure steam release valve Download PDFInfo
- Publication number
- CN203809703U CN203809703U CN201420226943.1U CN201420226943U CN203809703U CN 203809703 U CN203809703 U CN 203809703U CN 201420226943 U CN201420226943 U CN 201420226943U CN 203809703 U CN203809703 U CN 203809703U
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- China
- Prior art keywords
- valve
- spool
- pressure steam
- pilot control
- high pressure
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- Withdrawn - After Issue
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Abstract
The utility model relates to an ultrahigh-pressure steam release valve which comprises a valve body, a valve bonnet and valve internals. A valve cavity is arranged in the center of the valve body, and the valve internals include a valve stem, a valve seat, a porous sleeve and a valve element. The ultrahigh-pressure steam release valve is characterized in that a pilot control cabin is arranged on the upper portion of the valve element, and a pilot through hole is formed in the center of the bottom of the pilot control cabin and is communicated with a center hole of the valve seat via a pilot channel; the lower end of the valve stem is arranged in the pilot control cabin, a pilot stroke spring sleeves the lower end of the valve stem, the upper end of the pilot stroke spring is connected with a step on the valve stem, the lower end of the pilot stroke spring is jacked at the bottom of the pilot control cabin, and a sealing head is arranged at the lower end of the valve stem and can be in seal fit with the edge of the upper end of the pilot through hole; a through cover is mounted at an opening in the upper end of the pilot control cabin, portions which are positioned below the step on the valve stem are sealed in the pilot control cabin by the through cover and have axial strokes, and a pilot balance hole is formed in the through cover. The ultrahigh-pressure steam release valve has the advantages that the ultrahigh-pressure steam release valve is applicable to high-temperature steam release places with high pressure difference and high sealing requirements and is also applicable to releasing other high-pressure gas.
Description
Technical field
The utility model relates to a kind of atmospheric valve, specifically a kind of extra high pressure steam atmospheric valve that is applicable to steam evacuation occasion or other pressurized gas emptying occasion of high temperature, High Pressure Difference.
Background technique
In prior art, common atmospheric valve generally adopts porous sleeve cage valve or low noise cage valve, in use, spool, sealing surface of seat are washed away by high-velocity fluid very easily, and sealing surface is suffered damage, and cause valve to fit badly, leak greatly, cause the energy to be wasted in a large number.Particularly high at high temperature, High Pressure Difference, sealing class requirement, open steam evacuation occasion rapidly, existing common atmospheric valve is more difficult applicable, therefore need to design a kind of extra high pressure steam atmospheric valve.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of extra high pressure steam atmospheric valve is provided, its structural design is ingenious rationally, be specially adapted to high temperature, High Pressure Difference, sealing class requirement high, open steam evacuation occasion rapidly, be also applicable to other pressurized gas emptying occasion.
The technological scheme providing according to the utility model: extra high pressure steam atmospheric valve, comprise valve body, valve gap and trim, described valve body center is provided with valve pocket, described trim comprises valve rod, valve seat, porous sleeve and spool, and valve seat and porous sleeve are contained in valve pocket, and valve seat is positioned at porous sleeve below, spool is loaded in porous sleeve, valve gap is arranged on valve body and seals valve pocket, and valve rod is through valve gap, and valve rod lower end is connected with spool; Valve body is provided with valve inlet and valve outlet port, and valve inlet is communicated with valve base center hole, and valve outlet port is communicated with valve seat and porous sleeve peripheral space; It is characterized in that: described spool top is provided with pilot control chamber, described pilot control chamber bottom centre is provided with first via, and described first via is communicated with valve base center hole by leader channel; It is indoor that valve rod lower end is placed in pilot control, valve rod lower end is set with guide's stroke spring, guide's stroke spring upper end is connected with the step on valve rod, top, guide's stroke spring lower end is pressed in bottom, pilot control chamber, valve rod lower end is provided with sealing head, and sealing head can be sealed and matched with edge, first via upper end; The upper end open place of described pilot control chamber is provided with transparent cover, and the following position of step on described valve rod is enclosed in pilot control chamber and has axial stroke by transparent cover, and transparent cover is provided with guide's equalizing orifice.
As further improvement of the utility model, described spool bottom is provided with several guide's apertures, above several guide's apertures, be provided with the chamber of confluxing being communicated with guide's aperture, described in the chamber of confluxing by first via, be communicated with pilot control chamber, guide's aperture and the chamber of confluxing form leader channel.
As further improvement of the utility model, described transparent cover is threaded connection and coordinates with the upper end open of pilot control chamber, and the position of transparent cover can turn adjustment.
As further improvement of the utility model, described spool lower end surface is provided with annular external sealed platform, the interior perimeter surface of this annular external sealed platform is inclined-plane, described valve seat upper-end surface is provided with sealing platform in the annular raising up, and in described annular, the sealing outer surface of platform and the interior perimeter surface of described annular external sealed platform are sealed and matched.
As further improvement of the utility model, the interior perimeter surface of described annular external sealed platform is straight inclined-plane, the arc-shaped curved surface of the outer surface of sealing platform for outwards heaving in described annular.
As further improvement of the utility model, described porous sleeve bottom is provided with one section of dead track that there is no fenestra, and spool and valve seat open afterwards and before not departing from dead track, porous sleeve fenestra is not opened.
As further improvement of the utility model, the length of described dead track is 10 ~ 15% of spool stroke scope.
As further improvement of the utility model, described spool perisporium is provided with spool limited step, and described porous sleeve upper inside wall is provided with sleeve limited step, and while moving to limit travel on spool, spool limited step contacts cooperation with sleeve limited step.
As further improvement of the utility model, described spool limited step and sleeve limited step are sloping platform rank.
As further improvement of the utility model, the sleeve limited step position on described porous sleeve is also provided with auxiliary exhaust ports.
Extra high pressure steam atmospheric valve of the present utility model is mainly for operating mode particular design research and development such as the steam evacuation occasion of high temperature, High Pressure Difference or other pressurized gas emptying, its compared with prior art, tool has the following advantages:
(1) valve core structure of the present utility model is designed to guide's balanced type valve core structure, and it has reduced the requirement to actuator stem force, joins less actuator and just can realize tight seal under large pressure reduction operating mode; Can also reduce operational noise, reduce fluid scouring loss simultaneously.
(2) spool of the present utility model, valve seat construction and their mode of being sealed and matched have formed stealthy sealing configuration, and when spool unlatching work, sealing surface is not subject to fluid scouring, thereby in theory without the possibility of washing away damage, the working life of having improved equipment.
(3) porous sleeve of the present utility model bottom is provided with one section of dead track that there is no fenestra, and washing away also that it can make that spool, sealing surface of seat be subject to reduces greatly, and greatly improve working life.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment's structural representation.
Fig. 2 is the structure enlarged diagram of trim in Fig. 1.
Fig. 3 is the A portion enlarged diagram in Fig. 2.
Description of reference numerals: 1-valve body, 2-valve gap, 3-valve rod, 4-transparent cover, 5-porous sleeve, 5a-upper bush, 5b-lower sleeve, 6-spool, 7-guide's stroke spring, 8-valve outlet port, 9-valve seat, 10-valve inlet, 11-guide's equalizing orifice, 12-step, 13-pilot control chamber, 14-sleeve limited step, 15-auxiliary exhaust ports, 16-fenestra, 17-spool limited step, 18-guide's aperture, the 19-chamber of confluxing, the first via of 20-, 21-sealing head, 22-annular external sealed platform, sealing platform in 23-annular.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in the figure: the extra high pressure steam atmospheric valve in embodiment is mainly comprised of valve body 1, valve gap 2 and trim, wherein trim is mainly comprised of valve rod 3, valve seat 9, porous sleeve 5 and spool 6.
As shown in Figure 1 and Figure 2, described valve body 1 center is provided with valve pocket, and valve seat 9 and porous sleeve 5 are contained in valve pocket, valve seat 9 is positioned at porous sleeve 5 belows, and spool 6 is loaded in porous sleeve 5, and valve gap 2 is arranged on valve body 1 and seals valve pocket, valve rod 3 is through valve gap 2, and valve rod 3 lower ends are connected with spool 6; Valve body 1 is provided with valve inlet 10 and valve outlet port 8, and valve inlet 10 is communicated with valve seat 9 center holes, and valve outlet port 8 is communicated with valve seat 9 and porous sleeve 5 peripheral space; Described spool 6 tops are provided with pilot control chamber 13, and described pilot control Shi13 bottom centre is provided with first via 20, and described first via 20 is communicated with valve seat 9 center holes by leader channel; Valve rod 3 lower ends are placed in pilot control chamber 13, valve rod 3 lower ends are set with guide's stroke spring 7, guide's stroke spring 7 upper ends are connected with the step 12 on valve rod 3, guide's stroke spring 7 tops, lower end are pressed in 13 bottoms, pilot control chamber, valve rod 3 lower ends are provided with sealing head 21, and sealing 21 can be sealed and matched with first via 20 edges, upper end; The upper end open place of described pilot control chamber 13 is provided with transparent cover 4, and the following position of step 12 on described valve rod 3 is enclosed in pilot control chamber 13 and has axial stroke by transparent cover 4, and transparent cover 4 is provided with guide's equalizing orifice 11.
During concrete application, when needs Open valve, valve rod 3 first moves up, the steam of valve inlet 10 first enters spool 6 superjacent air spaces through leader channel, first via 20, pilot control chamber 13 and guide's equalizing orifice 11, make spool pressure at two ends balance Shang Xia 6, as long as join so less actuator, just can open rapidly valve.Above-mentioned spool 6 structures are guide's balanced type spool 6 structures, and it has reduced the requirement to actuator stem force, join less actuator and just can realize tight seal under large pressure reduction operating mode; Can also reduce operational noise, reduce fluid scouring loss simultaneously.
As shown in Figure 1 and Figure 2, in the utility model embodiment, described spool 6 bottoms are provided with several guide's apertures 18, above several guide's apertures 18, be provided with the chamber 19 of confluxing being communicated with guide's aperture 18, the described chamber 19 of confluxing is communicated with pilot control chamber 13 by first via 20, and guide's aperture 18 and the chamber 19 of confluxing form leader channel.
As shown in Figure 1 and Figure 2, in the utility model embodiment, described transparent cover 4 is threaded connection and coordinates with the upper end open of pilot control chamber 13, and the position of transparent cover 4 can turn adjustment.Be conducive to like this come according to actual service condition the stroke of regulating spool 6, widened Applicable scope of the present utility model.
As shown in Figure 2 and Figure 3, described spool 6 lower end surfaces are provided with annular external sealed platform 22, the interior perimeter surface of this annular external sealed platform 22 is inclined-plane, described valve seat 9 upper-end surfaces are provided with sealing platform 23 in the annular raising up, and in described annular, the sealing outer surface of platform 23 and the interior perimeter surface of described annular external sealed platform 22 are sealed and matched.Such spool 6, valve seat 9 structures and their mode of being sealed and matched have formed stealthy sealing configuration, and when spool 6 is opened work, sealing surface is not subject to fluid scouring, thereby in theory without the possibility of washing away damage, the working life of having improved equipment.
In addition, the interior perimeter surface of described annular external sealed platform 22 is straight inclined-plane, the arc-shaped curved surface of the outer surface of sealing platform 23 for outwards heaving in described annular.The mode of being sealed and matched like this can further guarantee sealing effect.
As shown in Figure 2, described porous sleeve 5 bottoms are provided with one section of dead track that there is no fenestra 16, and spool 6 opens afterwards with valve seat 9 and before not departing from dead track, porous sleeve 5 fenestras 16 are not opened.Preferably, the length of described dead track is 10 ~ 15% of spool 6 travel range.
During concrete application, when spool 6 is opened with valve seat 9, before spool 6 departs from dead track, the fenestra 16 of porous sleeve 5 is not opened, and now, except the gap stream of spool 6 and porous sleeve 5, almost there is no flow; When spool 6 strokes continue to increase, the fenestra 16 of porous sleeve 5 is opened, and now the cross section of fluid channel between spool 6 and valve seat 9 sealing surfaces is much larger than the flow area of porous sleeve 5 fenestras 16; At this moment vapor stream just declines much through the flow velocity of spool 6, valve seat 9, and what spool 6, valve seat 9 sealing surfaces were subject to washes away also and will reduce far away, and greatly improve working life.
As shown in Figure 1 and Figure 2, in the utility model embodiment, described spool 6 perisporiums are provided with spool limited step 17, and described porous sleeve 5 upper inside wall are provided with sleeve limited step 14, while moving to limit travel on spool 6, spool limited step 17 contacts cooperation with sleeve limited step 14.Preferably, described spool limited step 17 and sleeve limited step 14 are sloping platform rank.In addition, sleeve limited step 14 positions on described porous sleeve 5 are also provided with auxiliary exhaust ports 15, and when spool 6 moves up, the position of spool limited step 17 tops can be accumulated part steam, and this part steam can be discharged from auxiliary exhaust ports 15.
As shown in Figure 1 and Figure 2, in the utility model embodiment, described porous sleeve 5 is comprised of upper bush 5a and lower sleeve 5b, described fenestra 16 is only arranged on lower sleeve 5b, described sleeve limited step 14 is arranged at inner edge bead place, upper bush 5a lower end, and described auxiliary exhaust ports 15 is arranged on upper bush 5a.
Claims (10)
1. extra high pressure steam atmospheric valve, comprise valve body (1), valve gap (2) and trim, described valve body (1) center is provided with valve pocket, described trim comprises valve rod (3), valve seat (9), porous sleeve (5) and spool (6), valve seat (9) and porous sleeve (5) are contained in valve pocket, valve seat (9) is positioned at porous sleeve (5) below, spool (6) is loaded in porous sleeve (5), valve gap (2) is arranged on valve body (1) and goes up and seal valve pocket, valve rod (3) is through valve gap (2), and valve rod (3) lower end is connected with spool (6); Valve body (1) is provided with valve inlet (10) and valve outlet port (8), and valve inlet (10) is communicated with valve seat (9) center hole, and valve outlet port (8) is communicated with valve seat (9) and porous sleeve (5) peripheral space; It is characterized in that: described spool (6) top is provided with pilot control chamber (13), described pilot control chamber (13) bottom centre is provided with first via (20), and described first via (20) is communicated with valve seat (9) center hole by leader channel; Valve rod (3) lower end is placed in pilot control chamber (13), valve rod (3) lower end is set with guide's stroke spring (7), guide's stroke spring (7) upper end is connected with the step (12) on valve rod (3), top, guide's stroke spring (7) lower end is pressed in bottom, pilot control chamber (13), valve rod (3) lower end is provided with sealing head (21), and sealing head (21) can be sealed and matched with first via (20) edge, upper end; The upper end open place of described pilot control chamber (13) is provided with transparent cover (4), the following position of step (12) on described valve rod (3) is enclosed in pilot control chamber (13) and has axial stroke by transparent cover (4), and transparent cover (4) is provided with guide's equalizing orifice (11).
2. extra high pressure steam atmospheric valve as claimed in claim 1, it is characterized in that: described spool (6) bottom is provided with several guide's apertures (18), in the top of several guide's apertures (18), be provided with the chamber of confluxing (19) being communicated with guide's aperture (18), the described chamber of confluxing (19) is communicated with pilot control chamber (13) by first via (20), and guide's aperture (18) and the chamber of confluxing (19) form leader channel.
3. extra high pressure steam atmospheric valve as claimed in claim 1, is characterized in that: described transparent cover (4) is threaded connection and coordinates with the upper end open of pilot control chamber (13), and the position of transparent cover (4) can turn adjustment.
4. extra high pressure steam atmospheric valve as claimed in claim 1, it is characterized in that: described spool (6) lower end surface is provided with annular external sealed platform (22), the interior perimeter surface of this annular external sealed platform (22) is inclined-plane, described valve seat (9) upper-end surface is provided with sealing platform (23) in the annular raising up, and in described annular, the outer surface of sealing platform (23) and the interior perimeter surface of described annular external sealed platform (22) are sealed and matched.
5. extra high pressure steam atmospheric valve as claimed in claim 4, is characterized in that: the interior perimeter surface of described annular external sealed platform (22) is straight inclined-plane, the arc-shaped curved surface of the outer surface of sealing platform (23) for outwards heaving in described annular.
6. extra high pressure steam atmospheric valve as claimed in claim 1, it is characterized in that: described porous sleeve (5) bottom is provided with one section of dead track that there is no fenestra (16), spool (6) opens afterwards with valve seat (9) and before not departing from dead track, porous sleeve (5) fenestra (16) is not opened.
7. extra high pressure steam atmospheric valve as claimed in claim 6, is characterized in that: the length of described dead track is 10 ~ 15% of spool (6) travel range.
8. extra high pressure steam atmospheric valve as claimed in claim 1, it is characterized in that: described spool (6) perisporium is provided with spool limited step (17), described porous sleeve (5) upper inside wall is provided with sleeve limited step (14), while moving to limit travel on spool (6), spool limited step (17) contacts cooperation with sleeve limited step (14).
9. extra high pressure steam atmospheric valve as claimed in claim 8, is characterized in that: described spool limited step (17) and sleeve limited step (14) are sloping platform rank.
10. extra high pressure steam atmospheric valve as claimed in claim 8, is characterized in that: sleeve limited step (14) position on described porous sleeve (5) is also provided with auxiliary exhaust ports (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420226943.1U CN203809703U (en) | 2014-05-05 | 2014-05-05 | Ultrahigh-pressure steam release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420226943.1U CN203809703U (en) | 2014-05-05 | 2014-05-05 | Ultrahigh-pressure steam release valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809703U true CN203809703U (en) | 2014-09-03 |
Family
ID=51448453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420226943.1U Withdrawn - After Issue CN203809703U (en) | 2014-05-05 | 2014-05-05 | Ultrahigh-pressure steam release valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809703U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939623A (en) * | 2014-05-05 | 2014-07-23 | 无锡卓尔阀业有限公司 | Ultrahigh pressure steam emptying valve |
| CN106499827A (en) * | 2016-11-22 | 2017-03-15 | 辽宁大唐国际锦州热电有限责任公司 | The low side valve of protection against erosion |
| CN107191653A (en) * | 2017-06-26 | 2017-09-22 | 安徽红星阀门有限公司 | A kind of water attack release valve |
| CN113028071A (en) * | 2020-07-27 | 2021-06-25 | 浙江力诺流体控制科技股份有限公司 | Design method of pilot balance cage type regulating valve |
| CN113958720A (en) * | 2021-10-28 | 2022-01-21 | 上海发电设备成套设计研究院有限责任公司 | Balanced type valve core structure and regulating valve |
-
2014
- 2014-05-05 CN CN201420226943.1U patent/CN203809703U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939623A (en) * | 2014-05-05 | 2014-07-23 | 无锡卓尔阀业有限公司 | Ultrahigh pressure steam emptying valve |
| CN106499827A (en) * | 2016-11-22 | 2017-03-15 | 辽宁大唐国际锦州热电有限责任公司 | The low side valve of protection against erosion |
| CN107191653A (en) * | 2017-06-26 | 2017-09-22 | 安徽红星阀门有限公司 | A kind of water attack release valve |
| CN113028071A (en) * | 2020-07-27 | 2021-06-25 | 浙江力诺流体控制科技股份有限公司 | Design method of pilot balance cage type regulating valve |
| CN113958720A (en) * | 2021-10-28 | 2022-01-21 | 上海发电设备成套设计研究院有限责任公司 | Balanced type valve core structure and regulating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140903 Effective date of abandoning: 20160518 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |