CN1101907C - Gate valve - Google Patents
Gate valve Download PDFInfo
- Publication number
- CN1101907C CN1101907C CN98125472A CN98125472A CN1101907C CN 1101907 C CN1101907 C CN 1101907C CN 98125472 A CN98125472 A CN 98125472A CN 98125472 A CN98125472 A CN 98125472A CN 1101907 C CN1101907 C CN 1101907C
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- gate
- valve body
- ceramics
- 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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- Sliding Valves (AREA)
- Lift Valve (AREA)
Abstract
The present invention relates to a gate valve which is particularly suitable for the work of thermal power stations and petrochemical industry under the working conditions of high temperature and high pressure. The gate valve is mainly characterized in that a valve seat made of structural ceramics or special ceramics forms a taper fit with a valve body, a valve seat clamping sleeve barrel for positioning the valve seat is arranged in the valve body, a valve seat hole arranged in the valve seat forms a taper fit with a valve clack made of structural ceramics or special ceramics, a gate plate is connected with a pin shaft of a valve rod, and the valve seat hole is communicated with a left valve passage and a right valve passage which are arranged on the valve body. The present invention has the advantages that the connecting problem of the gate plate and the valve seat which are made of structural ceramics or special ceramics, and the valve rod and the valve body is solved, the erosion, the abrasion and the atmospheric corrosion of high-temperature and high-pressure fluid media are borne by the gate valve, and the service life is extended.
Description
The present invention relates to a kind of gate valve, particularly the gate valve that the working condition of High Temperature High Pressure uses down in the industry such as cogeneration power plant and petrochemical industry.
The gate valve of under the operating mode of High Temperature High Pressure, working, its flashboard and valve seat are because be subjected to washing away of High Temperature High Pressure flowing medium, wearing and tearing and cavitation, loss is very fast, therefore, operating life is very short, in order to address this problem, the alternative technology approach has two, one is the contact surface pile-up welding hard alloy material at flashboard and valve seat, another is flashboard and the valve seat that adopts structural ceramics or special cermacis, and the former overlay cladding is subjected to the influence of bead-welding technology very big with the combination force of matrix, and overlay cladding will further carry out cutting, this both can reduce the thickness of overlay cladding, can cause the nonuniformity of overlay cladding thickness again; The wear resistance of ceramet or special cermacis is better than cemented carbide, but stupalith will make its combination with the valve body and the impossible combination force that directly forms of valve rod of metallic material, will solve its linkage structure problem.
The purpose of this invention is to provide the gate valve that a kind of flashboard and valve seat all adopt structural ceramics or special cermacis.
Solution of the present invention is that the valve seat of structural ceramics or special cermacis is with the valve body taper fit, be provided with in the valve body with valve seat contact and with the valve seat clamp sleeve of valve seat location, valve seat orifice in the valve seat is with the flashboard taper fit of ceramet or special cermacis, this flashboard connects with the valve rod bearing pin, and valve seat orifice is then linked up with the left valve channel and the right valve channel that are located on the valve body.
The flashboard of above-mentioned gate valve is realized connecting with valve rod by bearing pin, valve seat also is fixed on the valve body by valve seat clamp sleeve and taper fit, thereby solved the flashboard of structural ceramics or special cermacis and valve seat connectivity problem with valve rod and valve body, and make gate valve more can bear the washing away of flowing medium, wearing and tearing and the cavitation of High Temperature High Pressure, increase the service life.Above-mentioned technical solution is applicable to the gate valve that latus rectum is smaller.
Illustrate particular content of the present invention below in conjunction with drawings and Examples.
Accompanying drawing is a structural drawing of the present invention.
As shown in the figure, gate valve of the present invention has valve body 1, flashboard 2, valve seat 3, valve rod 4, filler 5, Gland 6, gland bolt 7, Stem Mut 8 and handwheel 9, wherein the valve seat 3 of structural ceramics or special cermacis is with valve body 1 taper fit, be provided with in the valve body 1 with valve seat 3 contact and with the valve seat clamp sleeve 10 of valve seat 3 location, flap 2 taper fit of valve seat orifice isostructure pottery in the valve seat 3 or special cermacis, this flashboard 2 connects with valve rod 4 bearing pins 11, and valve seat orifice is then linked up with the left valve channel 12 and the right valve channel 13 that are located on the valve body 1.Because stupalith enbrittles, break in order to prevent valve seat 3 pressurizeds, soft metal pad 14 can be set in the bottom of valve seat 3; In order to improve the join strength of flashboard 2 with valve rod 4, the end of the valve rod 4 in the present embodiment forms connecting head 15, and forms nested relationship with the connection handle on the flashboard 2 16, connects with bearing pin 11 then.The valve body 1 of present embodiment is upper and lower two body structures, and utilizes the lower end surface of upper valve body 1 directly to apply pressure to valve seat clamp sleeve 10, therefore, must on the stressed surface of contact of valve seat clamp sleeve 10 with upper and lower valve body 1 seal ring 17,18 be set.
Claims (1)
1, a kind of gate valve, have valve body, flashboard, valve seat, valve rod, filler and Gland, it is characterized in that: the same valve body of the valve seat of structural ceramics or special cermacis (3) (1) taper fit, the valve seat clamp sleeve (10) that is provided with same valve seat (3) contact in the valve body (1) and valve seat (3) is located, flashboard (2) taper fit of valve seat orifice isostructure pottery in the valve seat (3) or special cermacis, the same valve rod of this flashboard (2) (4) bearing pin (11) connects, and the left valve channel (12) and the right valve channel (13) that then are located at together on the valve body (1) of valve seat orifice are linked up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98125472A CN1101907C (en) | 1998-12-09 | 1998-12-09 | Gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98125472A CN1101907C (en) | 1998-12-09 | 1998-12-09 | Gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1217441A CN1217441A (en) | 1999-05-26 |
| CN1101907C true CN1101907C (en) | 2003-02-19 |
Family
ID=5229186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98125472A Expired - Fee Related CN1101907C (en) | 1998-12-09 | 1998-12-09 | Gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1101907C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865299B (en) * | 2010-07-01 | 2012-07-04 | 河南理工大学 | Flat wedge floating type ceramic gate valve |
| CN112524273A (en) * | 2020-12-27 | 2021-03-19 | 诸暨市昂伯暖通科技有限公司 | Pressure seal structure and have automatic switching function's hot-water heating valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0052523A1 (en) * | 1980-11-18 | 1982-05-26 | Maxon Corporation | Gate valve |
| JPS63115969A (en) * | 1986-11-04 | 1988-05-20 | Nippon Fine Ceramics Kk | Gate valve made of ceramics |
-
1998
- 1998-12-09 CN CN98125472A patent/CN1101907C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0052523A1 (en) * | 1980-11-18 | 1982-05-26 | Maxon Corporation | Gate valve |
| JPS63115969A (en) * | 1986-11-04 | 1988-05-20 | Nippon Fine Ceramics Kk | Gate valve made of ceramics |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1217441A (en) | 1999-05-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |