CN214367901U - Fireproof ball valve - Google Patents
Fireproof ball valve Download PDFInfo
- Publication number
- CN214367901U CN214367901U CN202120267693.6U CN202120267693U CN214367901U CN 214367901 U CN214367901 U CN 214367901U CN 202120267693 U CN202120267693 U CN 202120267693U CN 214367901 U CN214367901 U CN 214367901U
- Authority
- CN
- China
- Prior art keywords
- ring
- sealing
- valve
- rubber sealing
- fire
- 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.)
- Active
Links
Images
Landscapes
- Taps Or Cocks (AREA)
Abstract
The utility model relates to a fire prevention ball valve, including valve body, spheroid, disk seat, the disk seat comprises fire prevention ring and rubber seal, installs at the valve body inner chamber by the clamping ring, and fire prevention ring left end face sets up the dish spring, and it is vice to constitute soft seal by rubber seal and spheroid during normal operating condition, and dish spring promotes fire prevention ring and spheroid to constitute the fire prevention sealing pair that the sealing ratio is high under the conflagration condition, and its fire behavior and sealing performance are good.
Description
Technical Field
The utility model belongs to the valve field, in particular to ball valve with fire prevention function.
Background
The ball valve is divided into a hard seal ball valve and a soft seal ball valve according to the sealing structure, the hard seal ball valve and the soft seal ball valve have the characteristics on the working performance, and the ball valve can be selected and used according to different working condition requirements. The soft sealing ball valve is widely applied to the working conditions of inflammable, explosive, toxic and harmful media due to good sealing performance, and the superior sealing performance is utilized to prevent potential safety hazards caused by medium leakage. Meanwhile, in order to prevent the soft sealing ring from being damaged to cause leakage and to cause safety accidents under the accident conditions of high temperature, fire and the like, the valve seat generally adopts a double-sealing structure formed by a hard sealing valve seat, the soft sealing ring and the ball body, when the soft sealing ring is burnt out by the fire, the hard sealing surface is put into operation to form a sealing pair with the ball body to form a fireproof ball valve, and the medium leakage is prevented from causing safety accidents. However, when the soft sealing ring of the existing fireproof ball valve is burnt out, the sealing specific pressure is very low when the hard sealing surface is matched with the ball body in a sealing way, and the hard sealing surface can not meet the sealing requirement after the soft sealing ring is damaged under the working condition of a high-pressure medium.
Disclosure of Invention
The utility model aims at the shortcoming that prior art exists, provide a high temperature, conflagration lead to soft sealing washer to damage the back, the sealed ratio of sealed complex between hard seal face and the spheroid is high, the fire prevention ball valve that sealing performance is good.
The technical scheme of the utility model comprises a valve body, a ball body and a valve seat, wherein the valve body is provided with an inlet and outlet passage, a valve cavity for accommodating the ball body is arranged between the inlet and outlet passage, and the valve seat is arranged between the valve cavity and the inlet and outlet passage and forms a sealing pair with the ball body spherical surface; the method is characterized in that: the valve seat consists of a fireproof ring and a rubber sealing ring, the section of the rubber sealing ring is of a square structure, an inner ring surface and an outer ring surface of the rubber sealing ring are embedded between the outer circular surface of the fireproof ring and the wall of the inner cavity of the valve body, the left end surface of the rubber sealing ring is pressed on a radial convex shoulder of the fireproof ring and a radial step of the valve cavity, and the right end surface of the rubber sealing ring is pressed and installed by a pressing ring and a screw; the right lower corner of the rubber sealing ring is provided with a sealing surface with the same curved surface as the surface of the ball body, the sealing surface and the ball body are matched with each other to form a soft sealing pair, a sealing surface matched with each other is arranged between the fireproof ring and the ball body, the sealing surface of the rubber sealing ring protrudes out of the sealing surface of the fireproof ring, and the rubber sealing ring and the ball body are matched with each other to form the sealing pair in a normal working state; the disc spring is arranged between the left end face of the fireproof ring and the radial step of the valve body channel, thrust towards the direction of the ball body is generated on the fireproof ring, and when a fire disaster and a high temperature burn the rubber sealing ring, the disc spring pushes the fireproof ring to be in compression fit with the ball body to form a hard sealing pair, so that the fireproof sealing function is realized.
In the technical scheme, the rubber sealing ring is formed by lining fluorine plastic on the surface of the metal ring. After the fluoroplastic is damaged by fire and high temperature, the disc spring pushes the fireproof ring and the metal ring to simultaneously compress the ball body to form a double sealing pair.
Compared with the prior art, the utility model beneficial effect be: the valve seat that rubber seal and fire prevention ring are constituteed is installed at the valve body inner chamber by the clamping ring, and fire prevention ring left end face sets up the dish spring, and it is vice to constitute soft seal by rubber seal and spheroid during normal operating condition, and dish spring promotes fire prevention ring and spheroid constitution fire prevention sealing pair that the sealing ratio is high under the conflagration condition, and its fire behavior and sealing performance are good.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The fire-proof ball valve shown in fig. 1 comprises a valve body 1, a ball body 2 and a valve seat, wherein the valve body 1 is provided with an inlet and outlet passage, a valve cavity for accommodating the ball body 2 is arranged between the inlet and outlet passage, and the valve seat is arranged between the valve cavity and the inlet and outlet passage and forms a sealing pair with the spherical surface of the ball body 2; the method is characterized in that: the valve seat is composed of a fireproof ring 4 and a rubber sealing ring 3, the section of the rubber sealing ring 3 is of a square structure, and can also adopt a rectangular structure or other structural forms, an inner ring surface and an outer ring surface of the rubber sealing ring are embedded between the outer ring surface of the fireproof ring 4 and the inner cavity wall of the valve body 1, the left end surface is pressed on a radial convex shoulder of the fireproof ring 4 and a radial step of the valve cavity, and the right end surface is pressed and installed on the valve body 1 by a pressing ring 6 and a screw 7; the lower right corner of the rubber sealing ring 3 is provided with a sealing surface with the same curved surface as the surface of the ball body 2, the sealing surface and the ball body 2 are matched with each other to form a soft sealing pair, a sealing surface which is matched with each other is arranged between the fireproof ring 4 and the ball body 2, the sealing surface of the rubber sealing ring 3 protrudes out of the sealing surface of the fireproof ring 4, the rubber sealing ring 3 and the ball body 2 are matched with each other to form the soft sealing pair in a normal working state, and the sealing performance is good; set up dish spring 5 between 4 left end faces of fire prevention ring and the radial step of 1 passageway of valve body, to fire prevention ring 4 production to 2 directions of spheroid thrust, after conflagration emergence, high temperature burn rubber seal 3, dish spring 5 promotes fire prevention ring 4 and spheroid 2 compress tightly to cooperate and form hard sealed pair, has higher sealed specific pressure, realizes the sealed function of fire prevention.
The rubber sealing ring 3 is made of fluoroplastic lined on the surface of the metal ring. After the fluoroplastic is damaged by fire and high temperature, the disc spring 5 pushes the fireproof ring 4 and the metal ring to simultaneously press the ball body 2 to form a double-sealing pair.
Claims (2)
1. A fire-proof ball valve comprises a valve body (1), a ball body (2) and a valve seat, wherein the valve body (1) is provided with an inlet channel and an outlet channel, a valve cavity for accommodating the ball body (2) is arranged between the inlet channel and the outlet channel, and the valve seat is arranged between the valve cavity and the inlet channel and forms a sealing pair with the spherical surface of the ball body (2); the method is characterized in that: the valve seat consists of a fire-proof ring (4) and a rubber sealing ring (3), the section of the rubber sealing ring (3) is of a square structure, an inner ring surface and an outer ring surface of the rubber sealing ring are embedded between the outer circular surface of the fire-proof ring (4) and the inner cavity wall of the valve body (1), the left end surface of the rubber sealing ring is pressed on a radial convex shoulder of the fire-proof ring (4) and a radial step of the valve cavity, and the right end surface of the rubber sealing ring is pressed and installed on the valve body (1) by a pressing ring (6) and a screw (7); the right lower corner of the rubber sealing ring (3) is provided with a sealing surface with the same curved surface as the surface of the ball body (2), the sealing surface and the sealing surface are matched with each other to form a soft sealing pair, a sealing surface which is matched with each other is arranged between the fireproof ring (4) and the ball body (2), the sealing surface of the rubber sealing ring (3) protrudes out of the sealing surface of the fireproof ring (4), and the rubber sealing ring (3) and the ball body (2) are matched with each other to form the soft sealing pair in a normal working state; a disc spring (5) is arranged between the left end face of the fireproof ring (4) and the radial step of the channel of the valve body (1).
2. The fire resistant ball valve of claim 1, wherein: the rubber sealing ring (3) is formed by lining fluoroplastic on the surface of a metal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120267693.6U CN214367901U (en) | 2021-02-01 | 2021-02-01 | Fireproof ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120267693.6U CN214367901U (en) | 2021-02-01 | 2021-02-01 | Fireproof ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214367901U true CN214367901U (en) | 2021-10-08 |
Family
ID=77961310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120267693.6U Active CN214367901U (en) | 2021-02-01 | 2021-02-01 | Fireproof ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214367901U (en) |
-
2021
- 2021-02-01 CN CN202120267693.6U patent/CN214367901U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102679008A (en) | Heavy-calibre ball valve | |
| CN102650342A (en) | Piston type compound sealing axial flow type check valve | |
| CN112696610A (en) | Novel general stopper seals up sealed hydrogenation rifle | |
| CN214367901U (en) | Fireproof ball valve | |
| CN2839787Y (en) | W type teeth groove graphite Composition spacer | |
| CN202612771U (en) | Large-diameter ball valve | |
| CN102109042B (en) | Two-way pressure-bearing fluororubber fireproof butterfly valve | |
| CN207333801U (en) | A kind of multi-state valve sealing structure | |
| CN204647403U (en) | A kind of composite valve seat sealing configuration | |
| CN211574314U (en) | Three-piece forged steel fixed ball valve | |
| CN208565627U (en) | A kind of spool back-end sealing structure | |
| CN210920184U (en) | Hard sealing structure of wedge-shaped graphite packing | |
| CN214888911U (en) | Novel fire prevention disk seat | |
| CN208870568U (en) | A kind of double packing element open hole packers of combined type | |
| CN202091540U (en) | Self-compensating superhard, wear resistant, high-pressure resistant and high-temperature resistant metal rigid-sealing ball valve | |
| CN218267353U (en) | Low-torque fireproof ball valve | |
| CN105650298A (en) | Dome valve | |
| CN205401788U (en) | High -pressure self -sealing spherical valve | |
| CN205064959U (en) | Inflation formula double containment relief valve | |
| CN215489069U (en) | Novel general stopper seals up sealed hydrogenation rifle | |
| CN112576565A (en) | Inflatable safety valve | |
| CN214946555U (en) | Hard sealing ball valve with middle cavity pressure relief function | |
| CN211202948U (en) | Soft and hard dual sealed four-valve seat structure | |
| CN205331479U (en) | Dome valve | |
| CN215928523U (en) | C-shaped breaking valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |