CN201043617Y - Nested forged steel ball valve - Google Patents
Nested forged steel ball valve Download PDFInfo
- Publication number
- CN201043617Y CN201043617Y CNU2007201095269U CN200720109526U CN201043617Y CN 201043617 Y CN201043617 Y CN 201043617Y CN U2007201095269 U CNU2007201095269 U CN U2007201095269U CN 200720109526 U CN200720109526 U CN 200720109526U CN 201043617 Y CN201043617 Y CN 201043617Y
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- CN
- China
- Prior art keywords
- valve
- spool
- valve body
- ball valve
- steel ball
- 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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Abstract
The utility model relates to a nesting-type forging steel ball valve comprising a valve body, a valve seat, a ball, a valve cap, a valve rod, a transmission mechanism, sealing elements and installation elements. The utility model is characterized in that the one-body structure valve is provided with a spool hole, in which a spool is fixed; and the spool is sealed in the spool hole of the valve body by the valve cap; a valve seat seal matching with the ball is arranged in the spool to avoid the leakage point of the previous flange connections,. and the ball valve does not need to be disassembled for maintenance. The utility model has the advantages of good sealing performance, convenient maintenance, material saving and consumpation reduction and low cost, and is suitable for the pipes used in high temperature, high pressure medium condition of power and chemical industry.
Description
Technical field
The utility model relates to a kind of valve, particularly about a kind of ball valve.
Background technique
Ball valve is because of 90 ° of keyings, full tunnel circulation during unlatching, have easy to operate, advantage such as flow resistance is little, and the open-shut device on the medium operating mode pipelines such as the high temperature of industries such as extensive use and oil, chemical industry, electric power, metallurgy, high pressure.Press the sealing configuration branch, two kinds of sealing configuration forms of hard seal ball valve and soft sealing ball valve are arranged; Press the manufacturing process branch of valve body, by casting ball valve and forging ball valve.The valve body of casting ball valve can be structure as a whole, but its load performance is relatively poor, so be used for the ball valve in high pressure field such as power generation, the forging steel ball valve that requires the valve body of ball valve to adopt Forging Technology to make.Because Forging Technology, valve body must be made multi-sheet structure and combine, so forging steel ball valve is divided into three pieces type ball valve, two-piece type ball valve and three kinds of structural types of all-welded ball valve again by the structural type of its valve body.All-welded ball valve is complicated because of welding procedure, and domestic production producer is less at present, and quality of product is also unstable, thus more be to adopt three pieces type ball valve, two-piece type ball valve.As patent publication No. is the structure improved three pieces type ball valve of CN2145294, mainly form by valve body, spheroid, valve seat, valve rod and driving mechanism, its valve body adopts left valve barrel, right valve barrel, ball valve body to combine, and is connected by flange respectively between ball valve body and left valve barrel and the right valve barrel.And for example patent publication No. is the High Temperature High Pressure ultrahigh hardness metal seal ball valve of CN2735103, and its structure comprises valve body, spheroid, valve seat, valve rod and driving mechanism, and valve body is connected to form by flange by left valve barrel and right valve barrel.One of shortcoming of these two kinds of structure ball valves is that valve body is combined by the flange connection, and there is leakage point in its joint, and after the use long period, the joint leaks outside easily, and it is unreliable to seal; Two of shortcoming is between spheroid and the valve seat after the wearing and tearing when needing repairing, and unload putting in order the deck valve door, and after bypass duct is installed, and system could proper functioning, and maintenance is inconvenient; Three of shortcoming is that valve body integral body all will adopt the forged steel material, and material is wasteful, the cost height.
Goal of the invention
One of the purpose of this utility model is the shortcoming that exists at prior art, provides a kind of valve body to be structure as a whole, valve body nesting type forging steel ball valve no leakage point, good seal performance itself;
Two of the purpose of this utility model is the shortcomings that exist at prior art, provides a kind of valve body to be structure as a whole, and when valve internal maintenance or replacing parts, does not need to pull down valve body, nesting type forging steel ball valve easy to maintenance;
Three of the purpose of this utility model is the shortcomings that exist at prior art, and a kind of materials saving, nesting type forging steel ball valve that cost is low are provided.
The technological scheme that realizes the utility model purpose comprises valve body, valve seat, spheroid, valve gap, valve rod, driving mechanism and Sealing and assembling set, mainly be in the middle of the valve body of integrative-structure, to make a spool bore, the spool bore internal fixation is installed a spool, this spool is installed on by valve bonnet seal in the spool bore of valve body, is provided with the valve seat that is sealed and matched mutually with spheroid in the spool.
In above technological scheme, the flange of an installation final controlling element is fixed in the valve gap upper end.
In above technological scheme, the spheroid upper and lower end is shaped on rotating shaft, is respectively equipped with bearing between its rotating shaft and the spool.
In above technological scheme, spool is a conical structure, is flush-mounted in the round taper hole of valve body.
One of the utility model advantage compared with prior art is: valve body is structure as a whole, and has avoided the valve body of prior art to connect the leakage point that combines existence, good seal performance by flange;
Two of the utility model advantage compared with prior art is: valve body is structure as a whole, and the spheroid of valve internal or valve seat need repairing or when changing, do not need to pull down valve body, only need open valve gap, take out spool, install valve gap then again, pipe-line system can be recovered proper functioning, and is easy to maintenance;
Three of the utility model advantage compared with prior art is: at the embedded cartridge spool of the valve body of integrative-structure, consumptive material was less when the spool forged steel pieces was carried out fine finishing, and valve body can also select the general material different with spool for use, and materials consumption is few, cost is low.
Description of drawings
Fig. 1 is a structure sectional view of the present utility model.
Embodiment
Nesting type forging steel ball valve as shown in Figure 1 comprises valve body 1, valve seat 6, spheroid 10, valve gap 21, valve rod 20, driving mechanism and Sealing and assembling set.Make a spool bore in the middle of the valve body 1 of integrative-structure, the spool bore internal fixation is installed a spool 11, and this spool 11 is a conical structure, is flush-mounted in the round taper hole of valve body 1, and is seal-installed on by valve gap 21 in the spool bore of valve body 1.Spool 11 adopts forged steel pieces to form by the fine finishing manufacturing, and valve body 1 can adopt forged steel pieces, also can adopt foundry goods to process.Be provided with valve seat 6 in the spool 11, this valve seat 6 is provided with the valve seat insert 8 that cooperatively interacts with spheroid 10 sealing surfaces, and valve seat insert 8 can be the hard sealing structure of being made by metallic material, also can adopt the soft sealing structure of being made by rubber material.Be provided with the floating installation of forming by spring 3 and spring seat 4 between valve seat 6 and the spool 11.Between spring seat 4 and valve seat 6, be provided with carbon seal ring 5, realize the sealing between valve seat 6 and the spool 11.Be provided with fixing pin 7 between spool 11 and the valve body 1, prevent that spool 11 from rotating in the spool bore of valve body 1, and the passway of between is respectively equipped with seal ring 2 up and down, the sealing between realization spool 11 and the valve body 1.Install by several double-screw bolts 14 and nut 13 between valve gap 21 and the valve body 1, be provided with seal washer 12 between the two.Spheroid 10 upper and lower end are shaped on rotating shaft respectively, are respectively equipped with bearing 9 between its rotating shaft and the spool 11, reduce spin friction power between rotating shaft and the spool 11.Spheroid 10 upper end rotating shafts are fixedlyed connected with valve rod 20.Valve gap 21 upper ends connect a flange, and the mounting flange of this flange and final controlling element interconnects, and the output Control Shaft of final controlling element is fixedlyed connected with valve rod 20, but this linkage structure valve rod 20 is upwards got by the pressure in the valve pocket.Between the interior step of the outer convex shoulder of valve rod 20 and valve gap 21, be provided with seal arrangement 15, realize the sealing between valve rod 20 and the valve gap 21.Simultaneously between valve rod 20 peripheries and valve gap 21, be provided with stuffing box packing 16, sealing filler 16 compresses sealing by Gland 17 by the nut on the valve rod 20 18, and between nut 18 and Gland 17, establish butterfly spring 19, prevent that nut 18 is loosening under the vibration situation.
Claims (5)
1. nesting type forging steel ball valve, comprise valve body (1), valve seat (6), spheroid (10), valve gap (21), valve rod (20), driving mechanism and Sealing and assembling set, it is characterized in that making a spool bore in the middle of the valve body (1) at integrative-structure, the spool bore internal fixation is installed a spool (11), this spool (11) is seal-installed in the spool bore of valve body (1) by valve gap (21), is provided with the valve seat (6) that is sealed and matched mutually with spheroid (10) in the spool (11).
2. nesting type forging steel ball valve according to claim 1 is characterized in that valve gap (21) upper end fixes a flange that final controlling element is installed.
3. nesting type forging steel ball valve according to claim 1 and 2 is characterized in that spheroid (10) upper and lower end is shaped on rotating shaft, is respectively equipped with bearing (9) between its rotating shaft and the spool (11).
4. nesting type forging steel ball valve according to claim 1 and 2 is characterized in that spool (11) is a conical structure, is flush-mounted in the round taper hole of valve body (1).
5. nesting type forging steel ball valve according to claim 3 is characterized in that spool (11) is a conical structure, is flush-mounted in the round taper hole of valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201095269U CN201043617Y (en) | 2007-05-17 | 2007-05-17 | Nested forged steel ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201095269U CN201043617Y (en) | 2007-05-17 | 2007-05-17 | Nested forged steel ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201043617Y true CN201043617Y (en) | 2008-04-02 |
Family
ID=39258512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201095269U Expired - Fee Related CN201043617Y (en) | 2007-05-17 | 2007-05-17 | Nested forged steel ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201043617Y (en) |
-
2007
- 2007-05-17 CN CNU2007201095269U patent/CN201043617Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080402 Termination date: 20160517 |