CN202360789U - General parallel double-valve-clack pressure self-sealing gate valve - Google Patents
General parallel double-valve-clack pressure self-sealing gate valve Download PDFInfo
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- CN202360789U CN202360789U CN2011204826417U CN201120482641U CN202360789U CN 202360789 U CN202360789 U CN 202360789U CN 2011204826417 U CN2011204826417 U CN 2011204826417U CN 201120482641 U CN201120482641 U CN 201120482641U CN 202360789 U CN202360789 U CN 202360789U
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- valve
- parallel double
- gate valve
- clack
- double flap
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Abstract
The utility model discloses a general parallel double-valve-clack pressure self-sealing gate valve, which comprises a valve body, a parallel valve seat, a parallel double-valve-clack component, a valve stem, a valve bonnet pressure self-sealing component, a packing sealing component, a support and a position indicating component. The structure and the size of the valve body are identical to those of a wedge type gate valve, the parallel valve seat can be replaced by a wedge-surface valve seat, and the parallel double-valve-clack component can be replaced by a gate plate. The general parallel double-valve-clack pressure self-sealing gate valve is reasonable in structure, throttles when closed, and stabilizes flow when completely opened, the valve seat and packing are sealed reliably, parts of the common wedge type gate valve can be effectively applied to the gate valve, and particularly, the problem that foundation parts of a flat double-valve-clack valve cannot be used for forging a valve body of a pressure self-sealing gate valve with the same aperture and different pressures is resolved. In addition, the general parallel double-valve-clack pressure self-sealing gate valve has an excellent popularization and application prospect in high-end markets such as supercritical thermal power, nuclear power, petrochemical hydrogenation and the like.
Description
Technical field
The versatility that the utility model relates to a kind of two types of gate valves and forges valve body is a kind of novel parallel bivalve lobe gate valve.
Background technique
Existing gate valve and parallel double flap valve have the profile of various structure and valve body, do not have versatility, and former parallel bivalve lobe lock ZL200820034537.X, patents such as ZL200820034540.1, structure are comparatively complicated, and manufacture difficulty is bigger.
The model utility content
It is a kind of rational in infrastructure that the purpose of the utility model is to provide; Can realize and the part efficient general of common Wedge gate valve, solve with the pressure selfsealings gate valve of bore different pressures and the basic part of dull and stereotyped bivalve clack valve and forge the general parallel double flap pressure selfsealings gate valve of valve body common question.
The technical solution of the utility model is:
A kind of general parallel double flap pressure selfsealings gate valve; Comprise valve body, parallel valve seat, parallel double flap assembly, valve rod, valve gap pressure selfsealings assembly, packing seal assembly, support and position indication component; It is characterized in that: the structure of valve body and size are identical with Wedge gate valve; Parallel valve seat is the form that can exchange with the wedge surface valve seat, and parallel double flap assembly is the form that can exchange with flashboard.
The packing seal assembly is made up of two groups of two fillers, spacer ring is housed and can seals pressurization or the adapter of leak detection in the middle of two groups of stuffing box packing up and down.
Have indicator groove on the support, position indicator is contained on the valve rod and reaches in the indicator groove.
To with bore but the different valve of pressure level has a unified channel diameter external form and middle part diameter external form; All parts that valve gap is above and Wedge gate valve and parallel double flap gate valve are general.
Valve body and valve gap binding site are straight cylinder type.
Valve petal shelf is provided with spacing stop screw is carried out in the flap enable possition, and the spacing holes of two restriction stop screw movings range are arranged in the T type groove, and the valve rod head is and blocks screw, prevents the form that screw eases out.
The utility model is rational in infrastructure; Throttling when closing; The fully open position current stabilization; Valve seat and packing seal are reliable, and can realize the part efficient general with common Wedge gate valve, have especially solved the common question that the basic part with the pressure selfsealings gate valve of bore different pressures and dull and stereotyped bivalve clack valve forges valve body.In high-end markets such as supercritical thermal power, nuclear power, petrochemical industry hydrogenation, good popularization and application prospect is arranged, solved that the expensive valve body forging die of the high-end valve that advances with state generation is not had versatility and the difficult problem that is difficult to promote.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is a 6 " embodiment's of above bore the structural representations of the utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the full-gear partial schematic diagram of Fig. 1.
Fig. 4 is used for the schematic representation of different pressures level with the general forging die of the valve body of bore different pressures.
Fig. 5 is that 6 of the utility model " contrasts schematic representation with upper valve body central structure and existing common central structure.
Embodiment
The left side of Fig. 1 plan view is usual pressure selfsealings Wedge gate valve; Its valve seat 2a has the oblique angle, and the right-hand part of plan view is parallel double flap pressure selfsealings gate valves, and its valve seat 2 is parallel; Two kinds of valve seats are used for different valve time-likes, all with identical valve body 1 welding.Realize the conversion of valve class with the highest identical valve body of processing cost.Valve gap more than 3 all parts all be general, be suitable for two types of valves with bore and pressure.
Among Fig. 2; About half one respectively corresponding to common Wedge gate valve and parallel double flap valve; Flashboard 8 and the position of valve petal shelf 6 when standard-sized sheet have been shown; The flashboard and the through hole of the common gate valve in visible left side have than the macroscopic cavitation among the figure, and right-hand part has the valve petal shelf and the through hole Percent of contact area of arc groove parallel double flap valve, obviously is better than the left side; Among Fig. 3, the flashboard of the common gate valve in left side and valve seat surface have very macroscopic cavitation, and two valve petal shelfs of right-hand part and valve seat surface anastomose property are better.Therefore can reduce the eddy current loss of fluid, save the energy, this arc groove has throttling function concurrently when closing.
Dish spring 5 and adjustable support 5a are housed in two flaps 4; And pine is assigned in the valve petal shelf 6, and the dish spring classification and the compound mode that are fit to can make flap and valve seat set up preliminary sealing; It is spacing that screw 7 on the valve petal shelf can make flap carry out in the enable possition; And carry out locking protection by the head of valve rod 9, and guaranteeing the easy motion of flap and valve seat, valve petal shelf 6 cooperates with the valve rod head with valve body guiding rib 1a and T type groove with the flashboard 8 the same guiding grooves that all have of common gate valve.When Stem Mut 10 rotation, valve rod 9 is moved up and down realize the keying of valve, all enable possitions are by last sealing 12 and the spacing sealing of the valve rod head conical surface, and can realize the replace with pressure of stuffing box packing 14.
In the valve bonnet seal assembly, adopt heavy high pretightening force helical spring 16, and pretension bolt 15, nut 15a, and, can guarantee the reliable sealing at height cyclic stress bottom flange selfsealings position through optimal design.
In the packing seal assembly, in the middle of two groups of stuffing box packing 14 spacer ring 17 is housed, and can seals the adapter 18 of pressurization or leak detection; Dish spring group 21 and position limit cycle 22 on gland 19 and the pressing plate 20 are chosen through optimal design, can confirm the size and the quantity of bolt 23; To nut 24; Apply suitable screw-down torque value, it is reliable that filler is obtained, and keep excellent sealability automatically.
Have indicator groove on the support 25, position indicator 26 is contained on the valve rod and reaches in the indicator groove, can show the enable possition of flap (or flashboard), and can limit switch be installed easily by the control requirement.
Also have parallel double flap assembly 11, packing seal assembly 13, position indication component 27, valve bonnet seal assembly 28 among the figure.
" structural principle and Fig. 1 of following bore are similar to 6.Support is the form of being threaded with valve body, between the pretension bolt of heavy high pretightening force dish spring and valve gap a spacing pad is arranged, and tightens pretension bolt, can guarantee valve gap dynamically in reliable sealing under the pressure situation.
The same bore that Fig. 4 designs for the utility model is without the valve body external form schematic representation of pressure.Solid line among the figure, dotted line, double dot dash line is the forging profile of three kinds of different high pound levels, their general character is exactly to have common outside diameter of passage d1 and lumen outside diameter d 2, various structure length L, high H in valve body center and aperture D1, D2.Utilize this characteristic of same outer diameter as of different pressures level; Can make the die cavity that occupies maximum cost in the forging die have versatility; And the drift that changes blank size and punching can obtain the valve body forging of different pressures level; Practice thrift expensive die cost greatly, improved the feasibility that multi-ram forging technology is promoted greatly.
Fig. 5 is the utility model valve body appearance structure and the contrast schematic representation of appearance structure usually, and the valve body and the valve gap binding site of normal appearance structure have a shoulder to be used for and being connected of support; The existence of this shoulder has increased forging die and has forged the complexity of technology; The versatility that is unfavorable for forging die, not shouldered valve body of the utility model and valve gap binding site (straight cylinder type), very favourable to simplifying forging die and forging technology; It is little to have volume, the comprehensive advantage that cost performance is high.
Claims (6)
1. general parallel double flap pressure selfsealings gate valve; Comprise valve body, parallel valve seat, parallel double flap assembly, valve rod, valve gap pressure selfsealings assembly, packing seal assembly, support and position indication component; It is characterized in that: the structure of valve body and size are identical with Wedge gate valve; Parallel valve seat is the form that can exchange with the wedge surface valve seat, and parallel double flap assembly is the form that can exchange with flashboard.
2. general parallel double flap pressure selfsealings gate valve according to claim 1 is characterized in that: the packing seal assembly is made up of two groups of two fillers, spacer ring is housed and can seals pressurization or the adapter of leak detection in the middle of two groups of stuffing box packing up and down.
3. general parallel double flap pressure selfsealings gate valve according to claim 1 and 2 is characterized in that: have indicator groove on the support, position indicator is contained on the valve rod and reaches in the indicator groove.
4. general parallel double flap pressure selfsealings gate valve according to claim 1 and 2 is characterized in that: to bore but the different valve of pressure level has a unified channel diameter external form and middle part diameter external form; All parts that valve gap is above and Wedge gate valve and parallel double flap gate valve are general.
5. general parallel double flap pressure selfsealings gate valve according to claim 1 and 2, it is characterized in that: valve body and valve gap binding site are straight cylinder type.
6. general parallel double flap pressure selfsealings gate valve according to claim 1 and 2; It is characterized in that: valve petal shelf is provided with spacing stop screw is carried out in the flap enable possition; The spacing holes that two restriction stop screw movings range are arranged in the T type groove, valve rod head are and block screw, prevent the form that screw eases out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204826417U CN202360789U (en) | 2011-11-29 | 2011-11-29 | General parallel double-valve-clack pressure self-sealing gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204826417U CN202360789U (en) | 2011-11-29 | 2011-11-29 | General parallel double-valve-clack pressure self-sealing gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360789U true CN202360789U (en) | 2012-08-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204826417U Expired - Fee Related CN202360789U (en) | 2011-11-29 | 2011-11-29 | General parallel double-valve-clack pressure self-sealing gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360789U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563108A (en) * | 2011-11-29 | 2012-07-11 | 南通高中压阀门有限公司 | Universal pressure self-sealing gate valve with double parallel discs |
-
2011
- 2011-11-29 CN CN2011204826417U patent/CN202360789U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563108A (en) * | 2011-11-29 | 2012-07-11 | 南通高中压阀门有限公司 | Universal pressure self-sealing gate valve with double parallel discs |
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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 |
Granted publication date: 20120801 Termination date: 20141129 |
|
| EXPY | Termination of patent right or utility model |