CN202302145U - High-performance safety valve with backpressure regulating ring - Google Patents
High-performance safety valve with backpressure regulating ring Download PDFInfo
- Publication number
- CN202302145U CN202302145U CN2011204343765U CN201120434376U CN202302145U CN 202302145 U CN202302145 U CN 202302145U CN 2011204343765 U CN2011204343765 U CN 2011204343765U CN 201120434376 U CN201120434376 U CN 201120434376U CN 202302145 U CN202302145 U CN 202302145U
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- CN
- China
- Prior art keywords
- valve
- regulating ring
- flap
- valve rod
- flat surface
- 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
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Abstract
The utility model relates to a high-performance safety valve with a backpressure regulating ring, and the high performance safety valve includes a valve body, a valve seat, a valve clack, a regulating ring, a recoil disc, a valve rod, a valve cap, a guide sleeve and a spring mechanism, wherein the circumference of the recoil disc is hermetically matched with an inner bore of the guide sleeve; the backpressure regulating ring is arranged on the valve rod above the valve clack, is screwed and connected with the valve rod, and is fixed on the valve rod through a stop pin; a clearance is reserved between the lower flat surface of the backpressure regulating ring and the upper flat surface of the valve clack; and a vent hole communicated with the atmosphere is arranged on the valve cap at a position of a valve cap cavity located on the lower flat surface of the backpressure regulating ring. Through adjusting the size of the clearance between the lower flat surface of the backpressure regulating ring and the upper flat surface of the valve clack, the air discharging flow and the recoil force of the upper part of the valve clack and the recoil disc can be changed, the valve clack is enabled to return and close quickly, and the reseating pressure of the valve clack amounts to about 96% of the set pressure; and furthermore, the high-performance safety valve has the advantage of high accuracy in the reseating pressure, and is applicable to an overpressure protection device of a high temperature high pressure steam boiler.
Description
Technical field
The utility model belongs to valve field, particularly about a kind of safety valve.The utility model is applicable to the overpressure protector of high temperature, high pressure steam boiler.
Technical background
Direct spring loaded safety valve is a kind of traditional product of generally using; Its structure comprises valve body, valve seat, flap, Adjusting ring, Disc holder, valve rod, valve gap, guide sleeve and spring mechanism; Utilize the position of rigidity and the Adjusting ring of spring to regulate the Blowdown of a safety valve of safety valve; Its shortcoming be Reseating pressure of a safety valve have only Set pressure about 90%, precision is low.
Summary of the invention
The purpose of the utility model is the shortcoming that exists to existing technology, and the high-performance safety valve of the high band backpressure regulation ring of a kind of Reseating pressure of a safety valve precision is provided.
The technological scheme of the utility model comprises valve body, valve seat, flap, Adjusting ring, Disc holder, valve rod, valve gap, guide sleeve and spring mechanism; The flap lower plane is shaped on the sealing surface that cooperatively interacts with valve seat; Last planar central is fixedly connected with the valve rod lower end, flap periphery fixed seal connection Disc holder.Mainly be that the Disc holder periphery cooperates with the motive sealing of guide sleeve endoporus; On the valve rod above the flap, be provided with the backpressure regulation ring; This backpressure regulation ring is connected with threaded stem; And be fixed on the valve rod by position limit pin, leave the gap between the plane on its lower plane and the flap, on the valve gap of backpressure regulation ring lower plane valve cover cavity of living in position, be provided with vent with atmosphere.
The utility model has the advantages that and on the valve rod above the flap, be provided with the backpressure regulation ring; Through regulating the gap length between the plane on backpressure regulation ring lower plane and the flap; Change the exhaust jet stream and the recoil force on flap and Disc holder top; The rapid return of flap is closed, and its Reseating pressure of a safety valve reaches about 96% of Set pressure, and the Reseating pressure of a safety valve precision is high.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
The high-performance safety valve of band backpressure regulation ring as shown in Figure 1; Comprise valve body 1, valve seat 2, flap 3, Adjusting ring, Disc holder 4, valve rod 9, valve gap 10, guide sleeve 5 and spring mechanism 8; Flap 3 lower planes are shaped on the sealing surface that cooperatively interacts with valve seat 2; Last planar central is fixedly connected with valve rod 9 lower ends, and valve rod 9 upper ends cooperate with the adjustment swivel nut endoporus in valve gap 10 upper-end surfaces is movable, are provided with bonnet assembly 11 on the valve gap 10 outside the adjustment swivel nut.Flap 3 periphery fixed seal connection Disc holders 4.Disc holder 4 peripheries cooperate with guide sleeve 5 endoporus motive sealings, and the boss sealing of guide sleeve 5 upper ends is fitted between valve body 1 and the valve gap 10.On the valve rod above the flap 39, be provided with backpressure regulation ring 6; This backpressure regulation ring 6 is threaded with valve rod 9; And be fixed on the valve rod 9 by position limit pin 7, leave the gap between the plane on its lower plane and the flap 3, on the valve gap 10 of backpressure regulation ring 6 lower planes valve cover cavity of living in position, be provided with vent with atmosphere; Through regulating backpressure regulation ring 6 lower planes and the increase of the gap above the flap 3 or dwindling; Change the exhaust jet stream and the recoil force on flap and Disc holder top, flap 3 rapid returns are closed, improve the Reseating pressure of a safety valve precision.
Claims (1)
1. high-performance safety valve with the backpressure regulation ring; Comprise valve body (1), valve seat (2), flap (3), Adjusting ring, Disc holder (4), valve rod (9), valve gap (10), guide sleeve (5) and spring mechanism (8); Flap (3) lower plane is shaped on the sealing surface that cooperatively interacts with valve seat (2), and last planar central is fixedly connected flap (3) periphery fixed seal connection Disc holder (4) with valve rod (9) lower end; It is characterized in that Disc holder (4) periphery cooperates with guide sleeve (5) endoporus motive sealing; On the valve rod (9) of flap (3) top, be provided with backpressure regulation ring (6), this backpressure regulation ring (6) is threaded with valve rod (9), and is fixed on the valve rod (9) by position limit pin (7); Its lower plane and flap (3) are gone up between the plane and are left the gap, on the valve gap (10) of backpressure regulation ring (6) lower plane valve cover cavity of living in position, are provided with the vent with atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204343765U CN202302145U (en) | 2011-11-01 | 2011-11-01 | High-performance safety valve with backpressure regulating ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204343765U CN202302145U (en) | 2011-11-01 | 2011-11-01 | High-performance safety valve with backpressure regulating ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202302145U true CN202302145U (en) | 2012-07-04 |
Family
ID=46371041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204343765U Expired - Fee Related CN202302145U (en) | 2011-11-01 | 2011-11-01 | High-performance safety valve with backpressure regulating ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202302145U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279358A (en) * | 2013-07-08 | 2015-01-14 | 北京精密机电控制设备研究所 | High-temperature and high-pressure fuel gas safety valve |
| CN106763952A (en) * | 2017-02-10 | 2017-05-31 | 哈电集团哈尔滨电站阀门有限公司 | A kind of steam security valve |
| CN109915636A (en) * | 2018-12-17 | 2019-06-21 | 陕西科技大学 | A kind of spring loaded safety valve |
| CN111734858A (en) * | 2020-08-10 | 2020-10-02 | 罗浮阀门集团有限公司 | Ultrahigh-performance steam safety valve |
-
2011
- 2011-11-01 CN CN2011204343765U patent/CN202302145U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279358A (en) * | 2013-07-08 | 2015-01-14 | 北京精密机电控制设备研究所 | High-temperature and high-pressure fuel gas safety valve |
| CN104279358B (en) * | 2013-07-08 | 2017-05-17 | 北京精密机电控制设备研究所 | High-temperature and high-pressure fuel gas safety valve |
| CN106763952A (en) * | 2017-02-10 | 2017-05-31 | 哈电集团哈尔滨电站阀门有限公司 | A kind of steam security valve |
| CN109915636A (en) * | 2018-12-17 | 2019-06-21 | 陕西科技大学 | A kind of spring loaded safety valve |
| CN111734858A (en) * | 2020-08-10 | 2020-10-02 | 罗浮阀门集团有限公司 | Ultrahigh-performance steam safety 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: 20120704 Termination date: 20181101 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |