CN111336294A - Explosion-proof safety valve of KF flange interface - Google Patents
Explosion-proof safety valve of KF flange interface Download PDFInfo
- Publication number
- CN111336294A CN111336294A CN202010291593.7A CN202010291593A CN111336294A CN 111336294 A CN111336294 A CN 111336294A CN 202010291593 A CN202010291593 A CN 202010291593A CN 111336294 A CN111336294 A CN 111336294A
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- Prior art keywords
- valve
- explosion
- proof safety
- safety valve
- compression spring
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses an explosion-proof safety valve of a KF flange interface, which comprises a valve body (1) and a valve core (6), wherein standard KF flanges are arranged at two ends of the valve body (1), a central hole (14) for installing the valve core (6) is arranged in the middle of the valve body (1), a solid cylinder (62) of the valve core (6) is sleeved with a compression spring (4) after being inserted into the central hole (14), an adjusting screw rod (61) for installing an adjusting nut (2) is arranged at the top end of the solid cylinder (62), the outer diameter of the adjusting nut (2) is larger than the outer diameter of the compression spring (4), and the inner diameter of the adjusting nut (2) is smaller than the inner diameter of the compression spring (4); the mutual matching of the adjusting screw rod (61) and the adjusting nut (2) is adopted to adjust the compression amount of the compression spring (4) so as to adjust the opening pressure of the explosion-proof safety valve (8). The explosion-proof safety valve can be quickly assembled and disassembled, has small volume, and can realize the unloading of flammable and explosive gas in the cavity without leakage and explosion.
Description
Technical Field
The invention relates to the technical field of safety protection valves, in particular to an explosion-proof safety valve of a KF flange interface.
Background
The explosion-proof safety valve is an overpressure safety protection device on pressure-bearing equipment for inflammable and explosive media or environment, is in a normally closed state on the equipment, is automatically opened when the pressure of the medium in the container equipment rises to exceed a set value, prevents the pressure of the medium in the container equipment from exceeding the set value by discharging the medium to the outside of the system, and is automatically closed when the pressure of the medium in the container equipment is reduced to the set value, so that the damage caused by the continuous running of the medium in the container equipment is prevented. The existing explosion-proof safety valve in the current market is single in form, the valve body is mostly threaded or welded to an equipment cavity, the valve body is influenced by external uncertain environment factors for a long time or is damaged due to human factors and needs to be replaced, or the design requirement needs to be frequently disassembled and used, and the threaded or welded and fixed explosion-proof safety valve has the hidden trouble of difficulty in replacement.
Disclosure of Invention
The invention aims to provide an explosion-proof safety valve of a KF flange interface aiming at the problems in the prior art; the valve body of the explosion-proof safety valve is provided with the KF flange, so that the explosion-proof safety valve can be quickly disassembled, assembled and replaced and is mainly used for flammable and explosive medium container equipment.
The invention aims to solve the problems by the following technical scheme:
the utility model provides an explosion-proof relief valve of KF flange interface, includes valve body and case, its characterized in that: the two ends of the valve body are provided with standard KF flanges, the middle part of the valve body is provided with a central hole for installing a valve core, a solid cylinder of the valve core is sleeved with a compression spring after being inserted into the central hole, the top end of the solid cylinder is provided with an adjusting screw rod for installing an adjusting nut, the outer diameter of the adjusting nut is larger than that of the compression spring, and the inner diameter of the adjusting nut is smaller than that of the compression spring; the opening pressure of the explosion-proof safety valve is adjusted by adjusting the compression amount of the compression spring through the mutual matching of the adjusting screw rod and the adjusting nut.
The adjusting screw rod is sleeved with a gasket for limiting the compression spring, and the gasket is positioned between the adjusting nut and the compression spring.
The central hole is a section of long and thin deep hole, and a circle of vent holes convenient for fluid to pass through are arranged on the peripheral side of the central hole.
And a boss is arranged on the outer surface of a KF flange at one end of the valve body, and a step sealing surface for mounting a sealing ring is arranged on the periphery of the boss.
The center hole is positioned in the KF flange inner cavity at the side of the boss.
The valve core is of a T-shaped structure, one end of the valve core is a cylindrical rod formed by an adjusting screw rod and a section of solid cylinder in the middle, the other end of the valve core is a flat cylindrical valve seat, the outer side of the valve seat is a plane, and the inner side of the valve seat is an inwards-concave conical sealing surface.
And an O-shaped rubber sealing ring for sealing is arranged between the outer end face of the valve body at the insertion side of the valve core and the valve core.
The sealing ring is arranged between the step sealing surface of the valve body and the conical sealing surface of the valve core.
The step sealing surface and the conical sealing surface form a sealing form with three surfaces and a sealing ring.
Compared with the prior art, the invention has the following advantages:
the T-shaped valve core of the explosion-proof safety valve penetrates through the center hole of the valve body and then is provided with the compression spring, one end of the compression spring is abutted against the end face of the center hole of the valve body, the other end of the compression spring is abutted against the gasket, the gasket is arranged on the adjusting screw rod and is fixed by the adjusting nut, the slender center hole in the valve body can ensure that the solid cylindrical section on the valve core penetrating through the hole only moves axially, and the phenomenon of inclined blocking of the valve core when the valve core moves relatively is effectively prevented; the explosion-proof safety valve can be quickly assembled and disassembled, is small in size, one end of the explosion-proof safety valve is matched with an external pipeline, the other end of the explosion-proof safety valve is matched with container equipment, and the inflammable and explosive gas in the cavity can be unloaded without leakage and explosion.
Drawings
FIG. 1 is a structural section view of an explosion-proof safety valve of a KF flange interface of the invention;
FIG. 2 is a structural cross-sectional view of the valve body of the present invention;
FIG. 3 is a schematic perspective view of the valve body of the present invention;
FIG. 4 is a schematic perspective view of the valve cartridge of the present invention;
fig. 5 is a schematic diagram of the actual installation of the explosion-proof safety valve of the KF flange interface of the present invention.
Wherein: 1-a valve body; 11-a stepped sealing face; 12-a boss; 13-a vent hole; 14-a central hole; 2-adjusting the nut; 3, a gasket; 4-compression spring; 5, sealing rings; 6, a valve core; 61-adjusting screw rod; 62-solid cylinder; 63-conical sealing surface; 64-valve seat; 7-a pressurized container; 71-KF welding a flange; 72-standard clamp; 8-explosion-proof safety valve; 9-metal hose.
Detailed Description
Technical solutions in the embodiments of the present invention are clearly and completely described according to the drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The explosion-proof safety valve can be used on pipelines or containers of flammable and explosive fluids, and the explosion-proof safety valve body is provided with two quick interface flanges, so that the quick disassembly function of the explosion-proof safety valve can be realized.
Examples
As shown in fig. 1-4: the utility model provides an explosion-proof relief valve of KF flange interface, including valve body 1, adjusting nut 2, gasket 3, compression spring 4, sealing washer 5, case 6, the both ends of this valve body 1 have standard KF flange, inside is equipped with the air vent 13 and the sealed face of step 11 that the round is convenient for the fluid to pass through, the centre of valve body 1 is equipped with the long and thin centre bore 14 that is used for installing case 6, case 6 that one end has solid core cylinder structure passes centre bore 14, the other end of case 6 is the accommodate the lead screw 61 of installation adjusting nut 2, the face of cylinder top that has compression spring 4 and solid core cylinder 62 to overlap on solid core cylinder 62 is equipped with the gasket 3 of cover on accommodate the lead screw 62, it is O type rubber seal 5 between the sealed face of the cone 63 of the sealed face of step 11 on the valve body 1 and. The valve core 6 is matched with the adjusting nut 2 and is used for adjusting the compression amount of the compression spring 4 so as to adjust the opening pressure of the explosion-proof safety valve, and the adjusting nut 2 is used for adjusting the opening pressure of the valve.
For the specific structure of the valve body 1 and the valve core 6, the valve body 1 of the explosion-proof safety valve is a hollow cavity with two ends being different KF flanges and an inner through part, the hollow cavity is composed of a circle of vent holes 13 and a central hole 14, the central hole 14 is a section of long and thin deep hole, a boss 12 is arranged on the outer surface of the KF flange at one end, and a step sealing surface 11 for mounting the sealing ring 5 is arranged on the boss. The valve core 6 of the explosion-proof safety valve is a T-shaped structure consisting of a cylindrical rod and a flat cylindrical valve seat 64, one end of the valve core 6 is provided with an adjusting screw rod 61, the middle part is provided with a section of solid cylinder 62, the other end is provided with the flat cylindrical valve seat 64, the outer side of the valve seat 64 is a plane, and the inner side of the valve seat 64 is provided with an inwards-concave conical sealing surface 63. A sealing ring 5 is arranged between the step sealing surface 11 of the valve body 1 and the conical sealing surface 63 of the valve core 6, and the sealing form of the sealing ring 5 is added on three surfaces formed by the step sealing surface 11 and the conical sealing surface 63.
When the explosion-proof safety valve of this embodiment is used, one end of the explosion-proof safety valve 8 is provided with a standard clamp 72 for mounting the explosion-proof safety valve 8 of the present invention on a KF welding flange 71 of a pressurized container 7, and the other end is provided with a metal hose 9 connected by the standard clamp 72 or directly connected to an exhaust gas storage device. When the pressure in the pressurized container 7 rises to exceed the set value of the explosion-proof safety valve 8, the explosion-proof safety valve 8 can be automatically opened, and the internal gas of the pressurized container 7 can be discharged into a waste gas storage container through a metal hose 9 connected with a standard hoop 72 at the rear end of the explosion-proof safety valve 8, so that the internal fluid of the pressurized container 7 can not be fused with an external environment medium, and the environmental pollution is avoided; meanwhile, when the fluid in the pressurized container 7 is a flammable and combustible medium, air can be effectively isolated, and explosion accidents are effectively avoided. When the pressure in the cavity of the explosion-proof safety valve 8 rises, the valve is automatically opened, the pressure in the cavity is rapidly reduced after the pressure is opened, and the valve can be automatically closed after the pressure is reduced to be lower than the set opening pressure of the valve, so that the automatic control of the medium pressure in the pressurized container 7 is realized, and the safety protection effect on container equipment is achieved.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea proposed by the present invention falls within the protection scope of the present invention; the technology not related to the invention can be realized by the prior art.
Claims (9)
1. The utility model provides an explosion-proof safety valve of KF flange interface, includes valve body (1) and case (6), its characterized in that: the two ends of the valve body (1) are provided with standard KF flanges, the middle part of the valve body (1) is provided with a center hole (14) for installing a valve core (6), a solid cylinder (62) of the valve core (6) is inserted into the center hole (14) and then sleeved with a compression spring (4), the top end of the solid cylinder (62) is provided with an adjusting screw rod (61) for installing an adjusting nut (2), the outer diameter of the adjusting nut (2) is larger than the outer diameter of the compression spring (4), and the inner diameter of the adjusting nut (2) is smaller than the inner diameter of the compression spring (4); the mutual matching of the adjusting screw rod (61) and the adjusting nut (2) is adopted to adjust the compression amount of the compression spring (4) so as to adjust the opening pressure of the explosion-proof safety valve (8).
2. The explosion-proof safety valve of the KF flange interface of claim 1, wherein: the adjusting screw rod (61) is sleeved with a gasket (3) for limiting the compression spring (4), and the gasket (3) is positioned between the adjusting nut (2) and the compression spring (4).
3. The explosion-proof safety valve of the KF flange interface of claim 1, wherein: the central hole (14) is a section of long and thin deep hole, and a circle of vent holes (13) which are convenient for fluid to pass through are arranged on the peripheral side of the central hole (14).
4. The KF flange interface explosion relief valve of claim 1 or 3, wherein: a boss (12) is arranged on the outer surface of a KF flange at one end of the valve body (1), and a step sealing surface (11) for mounting the sealing ring (5) is arranged on the peripheral side of the boss (12).
5. The explosion-proof safety valve of the KF flange interface of claim 4, wherein: the central hole (14) is positioned in the KF flange inner cavity at the side of the boss (12).
6. The explosion-proof safety valve of the KF flange interface of claim 1, wherein: the valve core (6) is of a T-shaped structure, one end of the valve core (6) is a cylindrical rod consisting of an adjusting screw rod (61) and a section of solid cylinder (62) in the middle, the other end of the valve core (6) is a flat cylindrical valve seat (64), the outer side of the valve seat (64) is a plane, and the inner side of the valve seat is an inwards-recessed conical sealing surface (63).
7. The explosion-proof safety valve of the KF flange interface of claim 1, wherein: an O-shaped rubber sealing ring (5) for sealing is arranged between the outer end face of the valve body (1) on the insertion side of the valve core (6) and the valve core (6).
8. The explosion-proof safety valve of the KF flange interface of claim 7, wherein: the sealing ring (5) is arranged between the step sealing surface (11) of the valve body (1) and the conical sealing surface (63) of the valve core (6).
9. The explosion-proof safety valve of the KF flange interface of claim 8, wherein: the step sealing surface (11) and the conical sealing surface (63) form a sealing form with three surfaces and a sealing ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010291593.7A CN111336294A (en) | 2020-04-14 | 2020-04-14 | Explosion-proof safety valve of KF flange interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010291593.7A CN111336294A (en) | 2020-04-14 | 2020-04-14 | Explosion-proof safety valve of KF flange interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111336294A true CN111336294A (en) | 2020-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010291593.7A Pending CN111336294A (en) | 2020-04-14 | 2020-04-14 | Explosion-proof safety valve of KF flange interface |
Country Status (1)
| Country | Link |
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| CN (1) | CN111336294A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623303A (en) * | 2022-02-24 | 2022-06-14 | 上海齐耀动力技术有限公司 | Connecting device for LNG tank car and LNG tank car pipeline |
-
2020
- 2020-04-14 CN CN202010291593.7A patent/CN111336294A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623303A (en) * | 2022-02-24 | 2022-06-14 | 上海齐耀动力技术有限公司 | Connecting device for LNG tank car and LNG tank car pipeline |
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