CN202402734U - Corrosion resistant lining type safety valve - Google Patents
Corrosion resistant lining type safety valve Download PDFInfo
- Publication number
- CN202402734U CN202402734U CN2011205009517U CN201120500951U CN202402734U CN 202402734 U CN202402734 U CN 202402734U CN 2011205009517 U CN2011205009517 U CN 2011205009517U CN 201120500951 U CN201120500951 U CN 201120500951U CN 202402734 U CN202402734 U CN 202402734U
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- valve
- disc holder
- valve body
- valve seat
- flap
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Abstract
The utility model belongs to the field of pressure system overpressure protection under the strong corrosive condition, and particularly discloses a corrosion resistant lining type safety valve, which comprises a valve seat, a valve body, a valve cap and a valve bonnet. A valve rod, an adjusting screw and a spring are arranged in the valve cap, a guide sleeve component is arranged at the lower end of the valve rod, a disc holder, a valve clack and a corrugated pipe component are arranged in the valve body, a layered lining layer is arranged on the surface of an inner cavity of each of the valve seat and the valve body, a round groove is arranged on the lower surface of the disc holder, the valve clack is arranged in the groove, and an O-shaped seal ring is sleeved on the lower surface of the disc holder and outside the valve clack. The layered lining layer isolates direct contact of steel materials with strong corrosive media, so that the problem of non-resistance to corrosion of the safety valve is solved, and corrosion resistance of the safety valve is greatly enhanced. The valve clack is designed to a disc shape and is fixed in the groove of the lower surface of the disc holder through fastening screws, the O-shaped seal ring is sleeved outside the valve clack, and metal rigid sealing between the valve clack and the valve seat is turned to elastic flexible sealing, so that sealing performance is better guaranteed.
Description
Technical field
This practicability belongs to the pressure system overpressure protection field under the severe corrosive operating mode, is specifically related to a kind of safety valve.
Background technique
Safety valve is a kind of special equipment that is used for the pressure system overpressure protection, is a kind of automatic valve.When system pressure reached Set pressure, it was by any external force, but utilized the power of medium itself to discharge the fluid of certain load quantity, in case the locking system internal pressure surpasses the predetermined safe value.When pressure recovery just often, valve will be gone the close preventing medium again and continue flowed out.
In the very strong industry of some corrosivity, the raw material in the production process, processing medium and finished product, for example saturated brine, wet chlorine, caustic soda, hydrochloric acid, nitric acid and sulfuric acid etc. all have extremely strong chemical corrosivity.Be in the acid, alkali, salt environment of electricity, chemical mediator, it is particularly important that the corrosion resistance of safety valve seems.General carbon steel safety valve can be corroded very soon, even the stainless steel safety valve also can be corroded.
Existing safety valve is as shown in Figure 1, and its internal structure is followed successively by adjustment screw 11, valve rod 8, spring 10, guide pin bushing assembly 7, bellows component 6, Disc holder 5, flap 4 from top to bottom.Adjustment screw 11 is fixed in the bonnet 12, and valve rod 8 upper ends are contained in the adjustment screw 11.Spring 10 is enclosed within on the valve rod 8, between valve rod 8 and adjustment screw 11.Guide pin bushing assembly 7 is fixed between valve gap 9 and the valve body 2.Bellows component cover 6 is on guide pin bushing assembly 7, between guide pin bushing assembly 7 and Disc holder 5.Valve rod 8 lower ends and Disc holder 5 upper ends are contained in the guide pin bushing assembly 7.Flap 4 upper surfaces are conical surface, and whole flap 4 is positioned at Disc holder 5 inside, in the outside, upper end of valve seat 1 Adjusting ring 19 down are installed, and through positioning screwn 20 valve body 2 and following Adjusting ring 19 are fixed.The metal parts of all contact mediums all uses the good special rolling-mill sections of corrosion resistance such as Hastelloy, monel metal on the material.Because contain a large amount of rare noble metals in these alloys, these metals resources are limited, cost an arm and a leg, and have limited special rolling-mill section large-scale popularization in safety valve and have used.Flap 4 is the hard sealing of metal with valve seat 1 simultaneously, and its sealability is relatively poor.
Summary of the invention
The purpose of the utility model is to provide that a kind of corrosion resistance is good, the corrosion resistant lining formula safety valve of good airproof performance.
The technological scheme of the utility model is following:
A kind of corrosion resistant lining formula safety valve, it comprises valve seat, and valve seat is provided with valve body, and valve body is provided with valve gap, and valve gap is provided with bonnet; Be provided with valve rod in the said valve gap, valve rod is provided with adjustment screw and spring outward, and said valve rod lower end is provided with the guide pin bushing assembly; Be provided with Disc holder in the described valve body, the below of Disc holder is provided with flap, and Disc holder is provided with bellows component outward, and the upper end of said Disc holder is connected with the valve rod lower end, and the surface of internal cavity of described valve seat and valve body is provided with the backing layer of stratiform; The lower surface of described Disc holder is provided with circular groove, in groove, is provided with circular flap, and is fixed in the circular groove through the Cock screw flap, simultaneously at the lower surface of Disc holder, the outside suit O RunddichtringO of flap.
In above-mentioned corrosion resistant lining formula safety valve: the outer ledge place in the import of said valve body, outlet port, have dovetail groove, the outer side surface of the said valve seat import outside and itself and valve body joint has dovetail groove.
In above-mentioned corrosion resistant lining formula safety valve: described bellows component comprises bellows upper connection, bellows lower contact and bellows between the two; Upper connection contacts with the lower surface of guide pin bushing assembly; Lower contact is connected with Disc holder, and through gasket seal, bellows is sleeved on outside the Disc holder.
In above-mentioned corrosion resistant lining formula safety valve: the outside of described valve seat is fixed with adpting flange, fixes through the lower surface of bolted flange and valve body.
The beneficial effect of the utility model is: the backing layer that stratiform is installed at the valve body and valve seat internal fixation; And it is inboard that it is fitted in valve seat and valve body; Isolated iron and steel metallic material contacts with the direct of strong corrosive medium; Solve the not corrosion resistant problem of safety valve, make the corrosion resistance of safety valve improve greatly; Be disc with flap design simultaneously; It is fixed in the groove of Disc holder lower surface through Cock screw, and outside flap suit O RunddichtringO, with the original metal hard-sealing between flap and the valve seat; Change into the rubber-like soft seal, thereby better guaranteed sealability; Further,, change into and outside valve seat, process adpting flange,, make Placement not receive the restriction of extraneous corrosion, better guaranteed the reliability that parts connect through adpting flange fixed valve body and valve seat with the thread connecting mode of original valve body and valve seat.
Description of drawings
Fig. 1 is a safety valve schematic representation of the prior art;
Fig. 2 is the corrosion resistant lining formula safety valve schematic representation of the utility model;
Among the figure: 1. valve seat; 2. valve body; 3.O RunddichtringO; 4. flap; 5. Disc holder; 6. bellows component; 7. guide pin bushing assembly; 8. valve rod; 9. valve gap; 10. spring; 11. adjustment screw; 12. bonnet; 13. Cock screw; 14. backing layer; 15. dovetail groove; 16. upper connection; 17. bellows; 18. lower contact; 19. following Adjusting ring; 20. positioning screwn; 21. adpting flange.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further explain.
As shown in Figure 2, valve rod 8 is installed in valve gap 9, valve rod 8 overcoats are debug whole screw 11, spring 10, at valve rod 8 lower end mounting guide sleeve assemblies 7.In valve gap 9 upper ends bonnet 12 is installed, the lower end of valve gap 9 is fixedly connected with whole valve body 2 through bolt.Valve rod 8 passes above-mentioned guide pin bushing assembly 7 and is connected with Disc holder 5, and the outside of this Disc holder 5 is set with bellows component 6.Bellows component 6 is welded by bellows upper connection 16, bellows 17 and bellows lower contact 18.This lower contact 18 links to each other with Disc holder 5 usefulness screw threads, the sealing of back cushion sheet.
Lower surface at above-mentioned Disc holder 5 is processed with circular groove; The groove center is processed with screw, and circular flap 4 is installed in groove, and these flap 4 centers also are processed with screw; Flap 4 is fixed in the groove through Cock screw 13, thereby makes that flap 4 and Disc holder 5 are fastening with engage thread.Simultaneously at the lower surface of Disc holder 5, the outside suit O RunddichtringO 3 of flap 4.Described valve body 2 belows are fixedly connected valve seat 1.
The upper surface of described valve seat 1 contacts with the lower surface of Disc holder 5, and it is suitable for reading that flap 4 covers the cavity at valve seat 1 center.When Disc holder 5 not being made up with valve seat 1, the part protrusion of O RunddichtringO 3 is at the lower plane of flap 4 and Disc holder 5.When Disc holder 5 was installed with valve seat 1, the last plane contact of the projection of O RunddichtringO 3 and lining valve seat 1 was accomplished the sealing between flap 4 and the valve seat 1.O RunddichtringO 3 easy deformation just can realize excellent sealing under less pressure effect.
Described whole valve body 2 is processed by carbon steel or stainless steel material, and the surface of internal cavity of valve body 2 is fitted with the backing layer 14 that erosion-resisting nonmetallic material form, and to prevent Korrosionsmedium corrosion housing, this material is a perfluoroethylene-propylene.The outer ledge place in the import of described valve body 2, outlet port has dovetail groove 15, and erosion-resisting nonmetallic material are filled in the dovetail groove 15, and the backing layer that makes erosion-resisting nonmetallic material form can be fastened on valve body 2 inboards.The lower surface of the upper connection 16 of above-mentioned bellows component 6 contacts with backing layer 14 anchor rings of valve body 2 inner chamber upper-end surfaces, realizes the sealing of bellows component 6 and valve body 2 under pressure.
Valve seat 1 is processed by carbon steel or stainless steel material, its surface of internal cavity, and installs on the outer surface that the back gets into body cavity and is fitted with the backing layer 14 that erosion-resisting plastics are processed, to prevent Korrosionsmedium corrosion housing.Have dovetail groove 15 at valve seat 1 suction side and itself and the outer side surface of valve body 2 joints, backing layer is filled in the dovetail groove 15, with being fastenedly connected between realization valve seat 1 and the backing layer 14.
Described flap 4, Disc holder 5, Cock screw 13 and bellows component 6 all adopt Hastelloys or monel metal materials to process.O RunddichtringO 3 is processed by erosion-resisting material fluorine rubber.
If adopt of the prior art being threaded that valve body 2 is fixedly connected with valve seat 1, connecting thread also receives dielectric corrosion easily so.In order to prevent this situation; So the present invention is processed with adpting flange 21 in the outside of valve seat 1; Bolt is passed the lower surface that adpting flange 21 screws in valve body 2; Valve seat 1 is fixing with valve body 2, make simultaneously the backing layer 14 and 14 extruding of the backing layer on the valve seat 1 of valve body 2 inner chambers to make valve body 2 and valve seat 1 further seal.
When system pressure reaches Set pressure, during the safety valve action, the force urges flap 4 of medium, O type circle 3 Disc holders 5, valve rod 8 integral body move upward.Between Disc holder 5 and lining valve seat 1, discharge the fluid of certain load quantity, in case the locking system internal pressure surpasses the predetermined safe value.When pressure recovery just often, the force urges valve rod 8 of spring 10, Disc holder 5, flap 4, O type circle 3 integral body move downward, safety valve close preventing medium continue to flow out, effectively protective system safe operation.Corrosion resistant lining formula safety valve can be used for realizing the overpressure protection of the pressure system under the deep-etching operating mode.
Claims (4)
1. corrosion resistant lining formula safety valve, it comprises valve seat (1), and valve seat (1) is provided with valve body (2), and valve body (2) is provided with valve gap (9), and valve gap (9) is provided with bonnet (12); Be provided with valve rod (8) in the said valve gap (9), outer adjustment screw (11) and the spring (10) of being provided with of valve rod (8), said valve rod (8) lower end is provided with guide pin bushing assembly (7); Be provided with Disc holder (5) in the described valve body (2); The below of Disc holder (5) is provided with flap (4); The outer bellows component (6) that is provided with of Disc holder (5); The upper end of said Disc holder (5) is connected with valve rod (8) lower end, it is characterized in that: the surface of internal cavity of described valve seat (1) and valve body (2) is provided with the backing layer (14) of stratiform; The lower surface of described Disc holder (5) is provided with circular groove; In groove, be provided with circular flap (4); And through Cock screw (13) flap (4) is fixed in the circular groove, simultaneously at the lower surface of Disc holder (5), the outside suit O RunddichtringO (3) of flap (4).
2. corrosion resistant lining formula safety valve as claimed in claim 1; It is characterized in that: the import of said valve body (2), the outer ledge place in outlet port; Have dovetail groove (15), the outer side surface of said valve seat (1) the import outside and itself and valve body (2) joint has dovetail groove (15).
3. according to claim 1 or claim 2 corrosion resistant lining formula safety valve; It is characterized in that: described bellows component (6) comprises bellows upper connection (16), bellows lower contact (18) and bellows between the two (17); Upper connection contacts with the lower surface of guide pin bushing assembly (7); Lower contact (18) is connected with Disc holder (5), and through gasket seal, bellows (17) is sleeved on outside the Disc holder (5).
4. according to claim 1 or claim 2 corrosion resistant lining formula safety valve, it is characterized in that: the outside of described valve seat (1) is fixed with adpting flange (21), fixes through the bolted flange (21) and the lower surface of valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205009517U CN202402734U (en) | 2011-12-05 | 2011-12-05 | Corrosion resistant lining type safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205009517U CN202402734U (en) | 2011-12-05 | 2011-12-05 | Corrosion resistant lining type safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202402734U true CN202402734U (en) | 2012-08-29 |
Family
ID=46700383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205009517U Expired - Lifetime CN202402734U (en) | 2011-12-05 | 2011-12-05 | Corrosion resistant lining type safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202402734U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518844A (en) * | 2011-12-05 | 2012-06-27 | 北京航天动力研究所 | Anticorrosive lining safety valve |
| CN110594460A (en) * | 2019-09-09 | 2019-12-20 | 昆山海芯机电科技有限公司 | Hard-seal fuel oil back pressure valve of diesel engine |
| CN110848431A (en) * | 2019-12-13 | 2020-02-28 | 罗浮阀门集团有限公司 | Double-sealing spring type safety valve |
-
2011
- 2011-12-05 CN CN2011205009517U patent/CN202402734U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518844A (en) * | 2011-12-05 | 2012-06-27 | 北京航天动力研究所 | Anticorrosive lining safety valve |
| CN110594460A (en) * | 2019-09-09 | 2019-12-20 | 昆山海芯机电科技有限公司 | Hard-seal fuel oil back pressure valve of diesel engine |
| CN110848431A (en) * | 2019-12-13 | 2020-02-28 | 罗浮阀门集团有限公司 | Double-sealing spring type safety valve |
| CN110848431B (en) * | 2019-12-13 | 2023-06-30 | 罗浮阀门集团有限公司 | Double-sealing spring type safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |
|
| CX01 | Expiry of patent term |