CN101074743A - Strong-corrosion-resisting spring safety valve - Google Patents
Strong-corrosion-resisting spring safety valve Download PDFInfo
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- CN101074743A CN101074743A CN 200710110830 CN200710110830A CN101074743A CN 101074743 A CN101074743 A CN 101074743A CN 200710110830 CN200710110830 CN 200710110830 CN 200710110830 A CN200710110830 A CN 200710110830A CN 101074743 A CN101074743 A CN 101074743A
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Abstract
This invention relates to a strong corrosion spring type safety valve ,in order to solve the problem that safety valve of existing the spring-back-pressure influence and corrosion ,it includes the valve body, valve cover and valve caps that connect with each other one by one from bottom to top , the valve seat and valve petal, the recoil disc covered with T positioning disk in periphery, stem, adjusting screw and screw cap connected with each other one by one from bottom to top; between the mouth of valve cover and adjusting screw is set a locking nut, the stem under adjusting screw sets spring and spring seat ,the peripheral of valve seat tope distributes adjusting ring by thread, the valve body is set with positioning screw to fix adjusting ring; The top of recoil disc is set with support bushings, between support bushings and disc set distributes a layer or multi-layer corrosion-resistant materials made of corrugated pipe. Therefore , its overcome back pressure and prevent the valve springs and other parts within the media corrosion, and make use of steam and maintenance, and when the valve opening marked urgent spray to high-lift, reliable performance and durability of good advantages. The pressure can start out in accordance with the regulations, intended to prevent excretion from the pressure vessel and the pressure increased, achieve the required discharge pressure valve immediately shut down.
Description
Technical field
The present invention relates to a kind of safety valve safety valve, particularly relate to a kind of strong-corrosion-resisting spring safety valve.
Background technique
Direct spring loaded safety valve is the protective gear that is used on pressurized boiler, container, the pipeline.It is to utilize spring force balance import pressure medium not by electric external force, when equipment pressure surpasses setting value, and the valve opening discharging, the superpressure medium is reduced to specified value, valve closing, it is the protective gear that guarantees the normal operation of pressurized system.
The internal security valve all is to adopt Soviet Union's technology fifties, and the drawing that Machinery Ministry once organized production safety valve enterprise to be used for low pressure temperature boiler is put in order, uses so far for manufactory is unified, and performance, quality do not satisfy the seventies.Introduce the performance parameter requirement of state's devices such as U.S., day, method after the seventies, so the Direct spring loaded safety valve that China is used for large-scale key device at present is still import.At present, the Direct spring loaded safety valve of domestic application all can't overcome the influence of back pressure to cracking pressure.As, Direct spring loaded safety valve to State Patent Office's application utility model patent before the applicant is exactly to comprise valve body, valve gap and the bonnet that links to each other successively from bottom to top, from bottom to top Disc holder, valve rod, adjusting screw rod and the plug screw of the valve seat that links to each other successively, flap, periphery suit positioning disk; Also be set with locking nut at valve gap between the suitable for reading and adjusting screw rod, valve rod also is set with spring and spring seat below adjusting screw rod, and the valve seat upper periphery is fitted with Adjusting ring by screw thread, is fitted with the positioning screwn that is used for fixing Adjusting ring on the valve body.This safety valve just can't overcome the influence of back pressure to cracking pressure, has above-mentioned defective.In addition, if the gap of positioning disk and Disc holder is too big, unlatching will be unstable, if the gap is too little, returning seat will be dumb, influences performance.On the fertilizer urea device, will crystallization when the urea medium is lower than 80 ℃ of temperature, the former cracking pressure of adjusting will unablely be opened.In case the surface of contact of positioning disk and Disc holder is subjected to dielectric corrosion, its flexibility will reduce greatly, thereby badly influences the unlatching performance.Particularly, in case strong corrosive medium is invaded spring strut, spring will be corroded and be lost the balanced action of spring force, and safety valve will be ineffective.So society is badly in need of wanting a kind of can overcome back pressure, and can prevent that positioning disk and spring are subjected to the safety valve of dielectric corrosion.
Summary of the invention
The objective of the invention is to overcome the above-mentioned defective of prior art, provide a kind of and can overcome back pressure, prevent that part in the valve such as spring is subjected to the strong-corrosion-resisting spring safety valve of dielectric corrosion.
For achieving the above object, strong-corrosion-resisting spring safety valve of the present invention comprises valve body, valve gap and the bonnet that links to each other successively from bottom to top, from bottom to top Disc holder, valve rod, adjusting screw rod and the plug screw of the valve seat that links to each other successively, flap, periphery suit T type positioning disk; Also be set with locking nut at valve gap between the suitable for reading and adjusting screw rod, valve rod also is set with spring and spring seat below adjusting screw rod, the valve seat upper periphery is fitted with Adjusting ring by screw thread, be fitted with the positioning screwn that is used for fixing Adjusting ring on the valve body, the T type positioning disk that is sleeved on the Disc holder periphery is installed between valve body and the valve gap; Its specialization is that the Disc holder upper periphery is set with support sleeve, is fitted with the bellows that one or more layers resistant material is made between the orchid dish of support sleeve and positioning disk.So design, the effect of support sleeve are to support the bellows bellows.But bellows is the back pressure of balance change then, overcomes back pressure, also can play the spacer medium corrosive action to the part in the valve gaps such as spring.The important effect of bellows is that isolated strong corrosive medium is invaded spring strut, prevent the spring corrosion, otherwise the balanced action that can lose spring force avoids safety valve ineffective.Therefore, it has can overcome back pressure, prevents that part in the valve such as spring is subjected to the advantage of dielectric corrosion.
As optimization, below coiling, the orchid of positioning disk also is fitted with the pad that resistant material is made.So design, the pad that resistant material is made can be used for preventing that the orchid dish of positioning disk is subjected to dielectric corrosion.
As optimization, the Adjusting ring periphery is shaped on densely covered vertical groove.So design can form the ejection ditch in the valve seat outside, and flap obtains obviously anxious spray when opening, reach high-lift.
As optimization, valve body bottom and periphery are shaped on the chuck wall, are shaped on steam inlet, the steam (vapor) outlet that is used for heat medium on the valve body chuck wall.So design, the introducing of chuck, steam inlet and steam (vapor) outlet can utilize steam that medium is incubated, and all is incubated high insulating effect at interior valve body to importing and exporting flange.The effect of steam jacket is to guarantee the valve pocket temperature, and is non-crystallizable when the urea medium is lower than 80 ℃ of temperature; In case the urea device crystallization utilizes greater than 80 ℃ steam at valve seat, flap heating and blowing, removes blocked portion, guarantees to adjust unlatching.
As optimization, valve seat, flap, Disc holder are all made by titanium alloy or two phase stainless steel.So design can guarantee corrosion resistance.
As optimization, described two phase stainless steel is 3RE60 or Monel stainless steel.So design can be satisfied corrosion-resistant needs better.
As optimization, do solution treatment before the valve seat processing; The Disc holder heat treatment quenching and tempering is to HB197-248.
Prove after tested: its sealing load, open pressure, discharge pressure, Reseating pressure of a safety valve, Lift, discharge amount all meet international standard; Must open during this unlatching, must close when this is closed, and good seal; Opening, discharge, return seat, sealing is a continuous process, and can chatter and vibration.
After adopting technique scheme, strong-corrosion-resisting spring safety valve of the present invention has can overcome back pressure, prevents that part is subjected to dielectric corrosion in the valve such as spring, can utilize steam insulation, flap obtains obviously anxious spray when opening, reach high-lift, the advantage that reliable performance and serviceability are good.Its in accordance with regulations pressure begin ejection, obtain the regulation lift simultaneously, predetermined excretion is discharged and is prevented the pressure of pressurized container from rising, valve is closed at once when reaching the regulation discharge pressure.Suddenly let out preceding and close valve after have no to leak.Can be used for the equipment that multiple chemical plant installations medium such as polyester, ethene, urea fertilizer and melamine need be incubated and the overpressure protection of pipeline.
Description of drawings
Fig. 1 is the sectional structure schematic representation of strong-corrosion-resisting spring safety valve of the present invention;
Fig. 2 is the sectional structure schematic representation of valve seat in the strong-corrosion-resisting spring safety valve of the present invention;
Fig. 3 is the sectional structure schematic representation of positioning disk in the strong-corrosion-resisting spring safety valve of the present invention;
Fig. 4 is the sectional structure schematic representation of Adjusting ring in the strong-corrosion-resisting spring safety valve of the present invention;
Fig. 5 is the structural representation of ripple tubular portion in the strong-corrosion-resisting spring safety valve of the present invention;
Fig. 6 is the sectional structure signal of chuck and steam inlet in the strong-corrosion-resisting spring safety valve of the present invention, steam (vapor) outlet and cleaning inlet;
Fig. 7 is the plan view of strong-corrosion-resisting spring safety valve of the present invention;
Fig. 8 is the rear view of strong-corrosion-resisting spring safety valve of the present invention.
Embodiment
Do further explanation below in conjunction with accompanying drawing and instantiation:
As shown in the figure, strong-corrosion-resisting spring safety valve of the present invention comprises valve body 1, valve gap 2 and the bonnet 3 that links to each other successively from bottom to top, from bottom to top Disc holder 7, valve rod 8, adjusting screw rod 9 and the plug screw 10 of the valve seat 4 that links to each other successively, flap 5, periphery suit T type positioning disk 6; Also be set with locking nut 11 at valve gap 2 between the suitable for reading and adjusting screw rod 9, valve rod 8 also is set with spring 12 and spring seat 13 below adjusting screw rod 9, valve seat 4 upper periphery are fitted with Adjusting ring 14 by screw thread, are fitted with the positioning screwn 15 that is used for fixing Adjusting ring 14 on the valve body 1; Disc holder 7 upper periphery are set with support sleeve 16, the bellows 18 that being used to of being fitted with between the orchid of support sleeve 16 and positioning disk 6 dish that one or more layers resistant material makes protected inner piece not corrode and overcome the effect of pain pressure.Also be fitted with the pad 19 that resistant material is made below the orchid dish of positioning disk 6.Adjusting ring 14 peripheries are shaped on densely covered vertical groove 20.Valve body 1 bottom and periphery are shaped on the chuck wall, are shaped on steam inlet 21, steam (vapor) outlet 22 on the valve body chuck wall.Valve seat 4, flap 5, Disc holder 7 are all made by titanium alloy or two phase stainless steel.Described two phase stainless steel is 3RE60 or Monel stainless steel.Valve seat 4 processing (or fine finishing) is preceding does solution treatment; Disc holder 7 heat treatment quenching and temperings are to HB197-248.
Claims (7)
1, a kind of strong-corrosion-resisting spring safety valve comprises the valve body, valve gap and the bonnet that link to each other successively from bottom to top, from bottom to top Disc holder, valve rod, adjusting screw rod and the plug screw of the valve seat that links to each other successively, flap, periphery suit T type positioning disk; Also be set with locking nut at valve gap between the suitable for reading and adjusting screw rod, valve rod also is set with spring and spring seat below adjusting screw rod, and the valve seat upper periphery is fitted with Adjusting ring by screw thread, is fitted with the positioning screwn that is used for fixing Adjusting ring on the valve body; It is characterized in that the Disc holder upper periphery is set with support sleeve, between the orchid dish of support sleeve and positioning disk, be fitted with the bellows that one or more layers resistant material is made.
2,, it is characterized in that also being fitted with the pad that resistant material is made below the orchid dish of positioning disk according to the described strong-corrosion-resisting spring safety valve of claim 1.
3,, it is characterized in that the Adjusting ring periphery is shaped on densely covered vertical groove according to the described strong-corrosion-resisting spring safety valve of claim 1.
4,, it is characterized in that valve body bottom and periphery are shaped on the chuck wall, are shaped on steam inlet, the steam (vapor) outlet that is used for heat medium on the valve body chuck wall according to claim 1 or 2 or 3 described strong-corrosion-resisting spring safety valves.
5,, it is characterized in that valve seat, flap, Disc holder all made by titanium alloy or two phase stainless steel according to the described strong-corrosion-resisting spring safety valve of claim 4.
6,, it is characterized in that described two phase stainless steel is 3RE60 or Monel stainless steel according to the described strong-corrosion-resisting spring safety valve of claim 5.
7,, it is characterized in that doing solution treatment before the valve seat processing according to the described strong-corrosion-resisting spring safety valve of claim 4; The Disc holder heat treatment quenching and tempering is to HB197-248.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710110830XA CN100460734C (en) | 2007-06-11 | 2007-06-11 | Strong-corrosion-resisting spring safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710110830XA CN100460734C (en) | 2007-06-11 | 2007-06-11 | Strong-corrosion-resisting spring safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101074743A true CN101074743A (en) | 2007-11-21 |
| CN100460734C CN100460734C (en) | 2009-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710110830XA Expired - Fee Related CN100460734C (en) | 2007-06-11 | 2007-06-11 | Strong-corrosion-resisting spring safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100460734C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207217A (en) * | 2011-05-30 | 2011-10-05 | 上海阀门厂有限公司 | Spring-type stabilizer safety valve |
| CN102313051A (en) * | 2010-07-08 | 2012-01-11 | 北京航天动力研究所 | Safety valve for polypropylene loop reactor |
| CN102518845A (en) * | 2011-12-15 | 2012-06-27 | 赵全 | Triple-spring safety valve |
| CN102518844A (en) * | 2011-12-05 | 2012-06-27 | 北京航天动力研究所 | Anticorrosive lining safety valve |
| CN103038555A (en) * | 2010-05-20 | 2013-04-10 | 德莱赛公司 | Pressure relief valve |
| CN104455496A (en) * | 2014-10-30 | 2015-03-25 | 北京航天动力研究所 | Conical surface soft sealing structure for safety valve |
| CN106224601A (en) * | 2016-08-29 | 2016-12-14 | 鞍山电磁阀有限责任公司 | Passive middle pressure safety injection system 3 grades of check valve specials of safety |
| CN115370765A (en) * | 2022-10-26 | 2022-11-22 | 哈电集团哈尔滨电站阀门有限公司 | Take cleaning function's fused salt relief valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3960169A (en) * | 1974-01-30 | 1976-06-01 | Controls Company Of America | Pilot operated evaporator pressure regulator |
| CN2262148Y (en) * | 1996-07-18 | 1997-09-10 | 海城市永兴机械制造厂 | Spring loaded safety valve |
| JP3826583B2 (en) * | 1998-09-09 | 2006-09-27 | Ｎｏｋ株式会社 | Control valve |
| CN2627311Y (en) * | 2003-07-28 | 2004-07-21 | 北京八达高技贸有限公司 | High temperature and high pressure spring safety valve |
-
2007
- 2007-06-11 CN CNB200710110830XA patent/CN100460734C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103038555A (en) * | 2010-05-20 | 2013-04-10 | 德莱赛公司 | Pressure relief valve |
| CN103038555B (en) * | 2010-05-20 | 2015-02-25 | 德莱赛公司 | Pressure relief valve |
| CN102313051A (en) * | 2010-07-08 | 2012-01-11 | 北京航天动力研究所 | Safety valve for polypropylene loop reactor |
| CN102313051B (en) * | 2010-07-08 | 2013-10-09 | 北京航天动力研究所 | Safety valve for polypropylene loop reactor |
| CN102207217A (en) * | 2011-05-30 | 2011-10-05 | 上海阀门厂有限公司 | Spring-type stabilizer safety valve |
| CN102518844A (en) * | 2011-12-05 | 2012-06-27 | 北京航天动力研究所 | Anticorrosive lining safety valve |
| CN102518845A (en) * | 2011-12-15 | 2012-06-27 | 赵全 | Triple-spring safety valve |
| CN104455496A (en) * | 2014-10-30 | 2015-03-25 | 北京航天动力研究所 | Conical surface soft sealing structure for safety valve |
| CN106224601A (en) * | 2016-08-29 | 2016-12-14 | 鞍山电磁阀有限责任公司 | Passive middle pressure safety injection system 3 grades of check valve specials of safety |
| CN115370765A (en) * | 2022-10-26 | 2022-11-22 | 哈电集团哈尔滨电站阀门有限公司 | Take cleaning function's fused salt relief valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100460734C (en) | 2009-02-11 |
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| SE01 | Entry into force of request for substantive examination | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20110611 |