CN203670881U - Low-torque ball valve - Google Patents
Low-torque ball valve Download PDFInfo
- Publication number
- CN203670881U CN203670881U CN201420007734.8U CN201420007734U CN203670881U CN 203670881 U CN203670881 U CN 203670881U CN 201420007734 U CN201420007734 U CN 201420007734U CN 203670881 U CN203670881 U CN 203670881U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- mounting groove
- sealing
- valve base
- 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
Links
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000012856 packing Methods 0.000 claims description 15
- 238000013461 design Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Landscapes
- Taps Or Cocks (AREA)
Abstract
The utility model discloses a low-torque ball valve. The low-torque ball valve comprises a valve base, a ball body and a shell body which are assembled together. An O-shaped sealing ring is formed between the valve base and the shell body. The O-shaped sealing ring is arranged on the outer periphery of the valve base in a sleeved mode. The valve base is provided with a mounting groove for assembling of the O-shaped sealing ring. A compressed spring which is coaxial with the valve base is arranged between the valve base and the shell body. The valve base is provided with a mounting groove for placing of the compressed spring. The shell body is provided with a spring supporting face perpendicular to the compressed spring. Sealing padding is arranged between the valve base and the ball body. A sealing padding mounting groove is formed in the face, in contact with the ball body, of the valve base. The sealing padding is arranged in the sealing padding mounting groove. The width of a sealing face formed by contacting of the sealing padding and the ball body is 2 mm-8 mm. According to the low-torque ball valve, under the premise that valve sealing is guaranteed, valve torque is lowered.
Description
Technical field
The utility model relates to low torque ball valve.
Background technique
Open and close torque under ball valve total head is poor is one of important parameter of valve, and it directly affects the type selecting of actuator, thereby affects cost.Moment of torsion increase also can make the wearing and tearing aggravation of component in addition, and then the working life of reducing valve.Practical experience is told us reduction moment of torsion simply can cause again the leakage of valve.Therefore, how to find and reduce moment of torsion and guarantee that the equinoctial point of sealing is the problem that we need to solve.
Model utility content
The purpose of this utility model is to provide a kind of low torque ball valve, and it is guaranteeing, under the prerequisite of valve seal, to reduce valve torque.
For achieving the above object, the technical solution of the utility model is a kind of low torque ball valve of design, comprises the valve seat, spheroid and the housing that are assembled together;
Between described valve seat and housing, be provided with O RunddichtringO, described O RunddichtringO is enclosed within valve seat periphery, and described valve seat is provided with the mounting groove for assembling O RunddichtringO;
Between described valve seat and housing, be also provided with and the homoaxial Compress Spring of valve seat, described valve seat is provided with the mounting groove for placing Compress Spring, and described housing is provided with the spring supporting face vertical with Compress Spring;
Between described valve seat and spheroid, be provided with stuffing box packing, described valve seat is provided with stuffing box packing mounting groove on the surface of contact of itself and spheroid, and described stuffing box packing is arranged in stuffing box packing mounting groove; Described stuffing box packing contacts formed sealing surface width with spheroid is 2-8mm.
Advantage of the present utility model and beneficial effect are: a kind of low torque ball valve is provided, and it is guaranteeing, under the prerequisite of valve seal, to reduce valve torque.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection domain of the present utility model with this.
The concrete technological scheme of implementing of the utility model is:
As shown in Figure 1, a kind of low torque ball valve, comprises the valve seat 1, spheroid 2 and the housing 3 that are assembled together;
Between described valve seat 1 and housing 3, be provided with O RunddichtringO 4, described O RunddichtringO 4 is enclosed within valve seat 1 periphery, and described valve seat 1 is provided with the mounting groove for assembling O RunddichtringO 4;
Between described valve seat 1 and housing 3, be also provided with and the homoaxial Compress Spring 5 of valve seat 1, described valve seat 1 is provided with the mounting groove for placing Compress Spring 5, and described housing 3 is provided with the spring supporting face vertical with Compress Spring 5;
Between described valve seat 1 and spheroid 2, be provided with stuffing box packing, described valve seat 1 is provided with stuffing box packing mounting groove on the surface of contact of itself and spheroid 2, and described stuffing box packing is arranged in stuffing box packing mounting groove; Described stuffing box packing contacts formed sealing surface width bm with spheroid 2 is 2-8mm.
In torque arithmetic, the sealing force of fixing ball valve is directly proportional to valve torque, and the larger valve torque of sealing force is larger, otherwise less.Sealing force has direct relation with the sealability of valve again simultaneously, and for the valve of same specification, sealing force greatly sealability is relatively better.
F is the thrust of fluid to valve seat 1, and Δ F is sealing force, and φ D is valve seat 1 diameter, and D value reduces that sealing force Δ F is corresponding reduces, otherwise sealing force increases.By design, Δ F sealing force is reduced, can reach the object of falling moment of torsion design.
Therefore, reduce valve torque and can realize by reducing the sealing force of fixing ball valve.But, need to ensure enough sealing forces seal ring and spheroid 2 are sealed.Take 6 " 600LB fixing ball valve is example, and in the situation that meeting sealability, when seal f ace width, bm gets 5mm, and valve seat 1 diameter phi D gets 180mm, sealing force Δ F=41484.9N; When seal f ace width, bm gets 3mm, and valve seat 1 diameter phi D gets 172mm, and sealing force Δ F=29218.2N, has reduced by 29.6%, and valve torque also can correspondingly reduce.Therefore,, in the situation that meeting sealability, by reducing seal f ace width bm, valve seat 1 diameter phi D can reduce sealing force effectively, thereby reduce valve torque.According to repetition test, valve aperture is ascending, and getting seal f ace width bm is 2-8mm, the favorable sealing property of valve, and moment of torsion can reduce 15%-20%.
Use the ball valve of above design proposal through torsion-testing actual to be pressed, the moment of torsion of valve effectively reduces, and valve is without leakage simultaneously.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (1)
1. low torque ball valve, is characterized in that, comprises the valve seat, spheroid and the housing that are assembled together;
Between described valve seat and housing, be provided with O RunddichtringO, described O RunddichtringO is enclosed within valve seat periphery, and described valve seat is provided with the mounting groove for assembling O RunddichtringO;
Between described valve seat and housing, be also provided with and the homoaxial Compress Spring of valve seat, described valve seat is provided with the mounting groove for placing Compress Spring, and described housing is provided with the spring supporting face vertical with Compress Spring;
Between described valve seat and spheroid, be provided with stuffing box packing, described valve seat is provided with stuffing box packing mounting groove on the surface of contact of itself and spheroid, and described stuffing box packing is arranged in stuffing box packing mounting groove; Described stuffing box packing contacts formed sealing surface width with spheroid is 2-8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420007734.8U CN203670881U (en) | 2014-01-07 | 2014-01-07 | Low-torque ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420007734.8U CN203670881U (en) | 2014-01-07 | 2014-01-07 | Low-torque ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670881U true CN203670881U (en) | 2014-06-25 |
Family
ID=50967178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420007734.8U Expired - Fee Related CN203670881U (en) | 2014-01-07 | 2014-01-07 | Low-torque ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670881U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154264A (en) * | 2014-08-18 | 2014-11-19 | 洪元生 | Safety double-sealed ball valve |
| CN108730560A (en) * | 2018-06-09 | 2018-11-02 | 浙江欧菲石油设备有限公司 | Combination fire prevention floating ball valve seat |
-
2014
- 2014-01-07 CN CN201420007734.8U patent/CN203670881U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154264A (en) * | 2014-08-18 | 2014-11-19 | 洪元生 | Safety double-sealed ball valve |
| CN108730560A (en) * | 2018-06-09 | 2018-11-02 | 浙江欧菲石油设备有限公司 | Combination fire prevention floating ball valve seat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205173525U (en) | Submarine pipeline pair gate valve | |
| CN203670881U (en) | Low-torque ball valve | |
| CN202790659U (en) | Multifunctional spring seat of ball valve | |
| CN203463688U (en) | Valve clack of stop valve | |
| CN203500553U (en) | Valve seat of ball valve | |
| CN202646680U (en) | Welding machine cylinder body with novel sealing device | |
| CN206309985U (en) | A kind of valve base sealing structure of hard seal ball valve | |
| CN202812241U (en) | Electric vacuum butterfly valve | |
| CN203548949U (en) | Pressing cap type needle valve | |
| CN203067818U (en) | Floating ball valve rod anti-explosion structure | |
| CN203477469U (en) | Anticorrosive check valve | |
| CN203309128U (en) | Cut-off adjusting valve | |
| CN203757041U (en) | Ball valve with spring piece compensation function | |
| CN203384409U (en) | Line-contact spherical surface sealing ring | |
| CN202629318U (en) | Valve rod sealing structure of floating ball valve | |
| CN203147018U (en) | Ultralow-temperature valve and valve rod triple sealing structure | |
| CN202790891U (en) | Seal structure of valve clack of stop valve | |
| CN202685922U (en) | Forklift oil tank cover | |
| CN202790591U (en) | Double-seal structure for stop valve | |
| CN201998974U (en) | Sealing structure of brake master pump of automobile | |
| CN201963926U (en) | Novel steel ball plug valve | |
| CN205013722U (en) | Valve clack | |
| CN203215057U (en) | Pretension force self-compensating packing seat | |
| CN204226738U (en) | Gas control seal valve seat type tee ball valve | |
| CN207049347U (en) | A kind of ball face sealing butterfly valve |
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: 20140625 |