CN206513896U - A kind of safety valve with secondary side self sealing structure - Google Patents
A kind of safety valve with secondary side self sealing structure Download PDFInfo
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- CN206513896U CN206513896U CN201720174327.XU CN201720174327U CN206513896U CN 206513896 U CN206513896 U CN 206513896U CN 201720174327 U CN201720174327 U CN 201720174327U CN 206513896 U CN206513896 U CN 206513896U
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- secondary side
- sealing structure
- safety valve
- side self
- self sealing
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Abstract
The utility model is related to a kind of safety valve with secondary side self sealing structure, including valve body, the valve seat that is connected on described valve body, and sealing waterline is provided with the horizontal flange fitted on described valve body with described valve seat.Valve of the present utility model still can keep secondary side seal after repeatedly disassembling；And reduce the specification and quantity of pad reduce buying and management cost.
Description
Technical field
The utility model is related to a kind of safety valve, more particularly to a kind of safety valve with secondary side self sealing structure.
Background technology
Safety valve as the bearing devices such as boiler, pressure vessel, pressure pipeline overpressure protection apparatus, wherein closing safety
Valve dispatches from the factory with bellows safety valve need to do airtight testing sealing.As shown in Figure 1：Traditionally we that spacer groove 4 is opened up on valve seat 2 is embedding
Enter after graphite pads 5 to screw in that valve body 1 is urgent ensures sealing, although good seal but this method exposes in actual applications
Following drawback.
1st, pad is disposable, and rear nonelastic can not be continuing with is disassembled in leakage；
2nd, the specification and quantity for adding warehouse part increase management and purchase cost.
The content of the invention
The purpose of this utility model is to provide a kind of safety valve with secondary side self sealing structure.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：
A kind of safety valve with secondary side self sealing structure, including valve body, the valve seat that is connected on described valve body,
Sealing waterline is provided with the horizontal flange fitted on described valve body with described valve seat.
Preferably, described sealing waterline is helix.
It is further preferred that the depth of described helix is 0.024 ~ 0.035mm.
It is further preferred that the quantity of described helix is to have 45 ~ 55 per 25.4mm width.
It is further preferred that the roughness of described helix is 3.2 ~ 6.3.
It is further preferred that the point of a knife angle of described helix is 1.6mm.
Because above-mentioned technical proposal is used, the utility model has following advantages compared with prior art：
1st, secondary side seal can still be kept after valve is repeatedly disassembled；
2nd, reducing the specification and quantity of pad reduces buying and management cost.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of safety valve in the prior art；
Accompanying drawing 2 is the structural representation of the present embodiment.
Wherein：1st, valve body；10th, horizontal flange；2nd, valve seat；3rd, waterline is sealed；4th, spacer groove；5th, graphite pads.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to the utility model：
As shown in Figure 2：A kind of safety valve with secondary side self sealing structure, including valve body 1, be connected on valve body 1
Sealing waterline 3 is provided with valve seat 2, the horizontal flange 10 fitted on valve body 1 with valve seat 2.In the present embodiment：
Sealing waterline 3 is helix.Wherein, the The concrete specification of helix is done as defined below：
The depth of helix is 0.024 ~ 0.035mm；
The quantity of helix is to have 45 ~ 55 per 25.4mm width；
The roughness of helix is 3.2 ~ 6.3；
The point of a knife angle of helix is 1.6mm.
So, after valve seat 2 strikes tightly with valve body 1, leakage is not resulted in yet even if the pressure for bearing maximum outlet(discharge) flange, is sealed
Ability is greatly improved, and is repeatedly disassembled constant with sealing effectiveness after time dress.
Above-described embodiment is only to illustrate technical concepts and features of the present utility model, and its object is to allow be familiar with technique
Personage can understand content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover protection domain of the present utility model it
It is interior.
Claims (5)
1. a kind of safety valve with secondary side self sealing structure, including valve body, the valve seat that is connected on described valve body, it is special
Levy and be：Sealing waterline is provided with the horizontal flange fitted on described valve body with described valve seat, described is close
Water shutoff line is helix.
2. a kind of safety valve with secondary side self sealing structure according to claim 1, it is characterised in that：Described spiral shell
The depth of spin line is 0.024 ~ 0.035mm.
3. a kind of safety valve with secondary side self sealing structure according to claim 1, it is characterised in that：Described spiral shell
The quantity of spin line is to have 45 ~ 55 per 25.4mm width.
4. a kind of safety valve with secondary side self sealing structure according to claim 1, it is characterised in that：Described spiral shell
The roughness of spin line is 3.2 ~ 6.3.
5. a kind of safety valve with secondary side self sealing structure according to claim 1, it is characterised in that：Described spiral shell
The point of a knife angle of spin line is 1.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720174327.XU CN206513896U (en) | 2017-02-23 | 2017-02-23 | A kind of safety valve with secondary side self sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720174327.XU CN206513896U (en) | 2017-02-23 | 2017-02-23 | A kind of safety valve with secondary side self sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206513896U true CN206513896U (en) | 2017-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720174327.XU Active CN206513896U (en) | 2017-02-23 | 2017-02-23 | A kind of safety valve with secondary side self sealing structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN206513896U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110091125A (en) * | 2019-04-12 | 2019-08-06 | 沈阳透平机械股份有限公司 | A kind of pipeline compressor air duct flange sealing surface water wave line processing method |
-
2017
- 2017-02-23 CN CN201720174327.XU patent/CN206513896U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110091125A (en) * | 2019-04-12 | 2019-08-06 | 沈阳透平机械股份有限公司 | A kind of pipeline compressor air duct flange sealing surface water wave line processing method |
| CN110091125B (en) * | 2019-04-12 | 2020-06-23 | 沈阳透平机械股份有限公司 | Method for machining water line of sealing surface of air duct flange of compressor for pipeline |
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