CN206539743U - Soft seal high-pressure safety valve - Google Patents
Soft seal high-pressure safety valve Download PDFInfo
- Publication number
- CN206539743U CN206539743U CN201720236050.9U CN201720236050U CN206539743U CN 206539743 U CN206539743 U CN 206539743U CN 201720236050 U CN201720236050 U CN 201720236050U CN 206539743 U CN206539743 U CN 206539743U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- flap
- sealing ring
- high temperature
- voltage resistant
- 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 is related to a kind of soft seal high-pressure safety valve.Mainly solve that existing soft-sealing safety valve sealing effectiveness is poor, service life is short and the flimsy problem of high temperature high voltage resistant sealing ring.It is characterized in that：The upper end of the valve seat installation set (6) is provided with pilot hole (9), the shaft shoulder (7) gap of flap (2), which coordinates, to be installed in pilot hole (9), and valve seat installation set (6) side wall below pilot hole (9) is provided with medium channel (10)；The internal diameter of high temperature high voltage resistant sealing ring (8) is more than the internal diameter of valve seat (2).The soft seal high-pressure safety valve is provided with pilot hole on valve seat, the internal diameter of high temperature high voltage resistant sealing ring is reduced simultaneously, flap will not will not also be impacted and be damaged by side force, high temperature high voltage resistant sealing ring, with good sealing effect and the characteristics of long service life.
Description
Technical field
The utility model is related to a kind of safety valve, and in particular to a kind of soft seal high-pressure safety valve.
Background technology
Safety valve plays safeguard protection in systems, is mainly used in the internal pressures such as control boiler, pressure vessel, pipeline
No more than setting, when system pressure exceedes setting, safety valve is opened, and a part of gas or fluid in system are discharged into
In air or outside pipeline, system pressure is set to be no more than permissible value, so as to ensure that because of hypertonia accident does not occur for system.Mesh
Before, there is a kind of small-bore soft-sealing safety valve, this soft-sealing safety valve is simple in construction, compact, as shown in Fig. 2 including valve
Body, valve seat, flap, guide sleeve and spring, valve seat are arranged on valve body by valve seat installation set, and flap top is located in guide sleeve
And can be slided in guide sleeve, the top of spring is enclosed on outside guide sleeve, and the shaft shoulder on the lower end and flap of spring offsets, on valve seat
End is fixed with high temperature high voltage resistant sealing ring, and flap lower end is Surface of Sphere, flap lower end and resistance to height under the action of the spring during normality
Warm high-pressure seal ring mutually extrudes realization in sealing, and when pressure medium reaches setting value in system, medium overcomes the effect of spring
Power makes spring-compressed, and flap is moved up, and safety valve is opened, and medium is discharged from the outlet of body wall.This soft-sealing safety valve exists
There is following technological deficiency when using：1. flap is off-center when flap is closed, the downward impulsive force of flap concentrates on sealing surface
On, cause sealing surface to broaden, seal pressure step-down, sealing effectiveness is deteriorated, the phenomenons, sealing such as poorly sealed, generation leakage occur
Effect is poor.2. the guiding of flap is poor, unidirectionally being discharged by medium when flap is closed makes flap generate skew, rapid wear when closed
Bad sealing ring, service life shortens.3. the internal diameter of high temperature high voltage resistant sealing ring is consistent with the internal diameter of valve seat, medium can be right when spraying
The top edge impact of high temperature high voltage resistant sealing ring, damages high temperature high voltage resistant sealing ring, causes sealing not live, leak, make
Use short life.
Utility model content
In order to solve, existing soft-sealing safety valve sealing effectiveness is poor, service life is short and high temperature high voltage resistant sealing ring rapid wear
Bad the problem of, the utility model provides a kind of soft seal high-pressure safety valve, and the soft seal high-pressure safety valve is provided with valve seat
Pilot hole, while reducing the internal diameter of high temperature high voltage resistant sealing ring, flap will not be by side force, high temperature high voltage resistant sealing ring
It will not be impacted and be damaged, with good sealing effect and the characteristics of long service life.
The technical solution of the utility model is：The soft seal high-pressure safety valve, including valve body, valve seat, flap, guide sleeve and
Spring, valve seat is arranged on valve body by valve seat installation set, and flap top is located in guide sleeve and can slided in guide sleeve, bullet
The top of spring is enclosed on outside guide sleeve, and the shaft shoulder on the lower end and flap of spring offsets, and it is close that valve seat upper end is fixed with high temperature high voltage resistant
Seal, it is characterised in that：The upper end of the valve seat installation set is provided with pilot hole, and the pivot clearance of flap, which coordinates, is installed on pilot hole
Interior, the valve seat installation set side wall below pilot hole is provided with medium channel；The internal diameter of high temperature high voltage resistant sealing ring is more than the interior of valve seat
Footpath.
The medium channel is 4 and is evenly distributed on valve seat installation set side wall.
The utility model has the advantages that：Due to taking above-mentioned technical proposal, the shaft shoulder and flap of flap bottom
Top is separately positioned in pilot hole and guide sleeve, that is, guiding is arranged at flap bottom and flap top, when safety valve is opened
When flap move up, medium after valve seat, the medium channel of valve seat installation set side wall by outlet discharge, flap will not be by lateral
There is eccentric wear in power, while the internal diameter of high temperature high voltage resistant sealing ring is more than the internal diameter of valve seat, medium will not be directly impinging high temperature resistant
High-pressure seal ring top edge, high temperature high voltage resistant sealing ring is hardly damaged, and good sealing effect, service life is long.
Brief description of the drawings
Accompanying drawing 1 is structure sectional view of the present utility model.
Accompanying drawing 2 is the structure sectional view of background technology.
1- valve bodies in figure, 2- valve seats, 3- flaps, 4- guide sleeves, 5- springs, 6- valve seat installation sets, the 7- shaft shoulders, 8- high temperature resistants
High-pressure seal ring, 9- pilot holes, 10- medium channels.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Fig. 1~Fig. 2, the soft seal high-pressure safety valve, including valve body 1, valve seat 2, flap 3, guide sleeve 4 and spring
5, valve seat 2 is arranged on valve body 1 by valve seat installation set 6, and the top of flap 3 is located in guide sleeve 4 and can slided in guide sleeve 4
Dynamic, the top of spring 5 is enclosed on outside guide sleeve 4, and the lower end of spring 5 offsets with the shaft shoulder 7 on flap 3, and the upper end of valve seat 2 is fixed with resistance to
HTHP sealing ring 8, high temperature high voltage resistant sealing ring 8 uses the materials such as rubber or polytetrafluoroethylene (PTFE), the valve seat installation set 6
Upper end is provided with pilot hole 9, and the gap of the shaft shoulder 7 of flap 2, which coordinates, to be installed in pilot hole 9, the valve seat installation set 6 of the lower section of pilot hole 9
Side wall is provided with medium channel 10；The internal diameter of high temperature high voltage resistant sealing ring 8 is more than the internal diameter of valve seat 2.Due to taking above-mentioned technical side
Case, the shaft shoulder 7 of the bottom of flap 3 and the top of flap 3 are separately positioned in pilot hole 9 and guide sleeve 4, that is, the bottom of flap 3 and
Guiding is arranged at the top of flap 3, and when safety valve is opened, flap 3 is moved up, and medium passes through valve seat 2, the medium of the side wall of valve seat installation set 6
Discharged after passage 10 by outlet, eccentric wear will not be occurred by side force in flap 3, and flap 3, which is fallen after rise when closing, the bottom of pilot hole 9 limit
Position, flap 3 is restricted to the downward impulsive force of high temperature high voltage resistant sealing ring 8, does not result in sealing surface and broaden, and sealing ratio will not
Change, good sealing effect.The internal diameter of high temperature high voltage resistant sealing ring 8 is more than the internal diameter of valve seat 2 simultaneously, and medium will not be rushed directly
The top edge of high temperature high voltage resistant sealing ring 8 is hit, high temperature high voltage resistant sealing ring 8 is hardly damaged, good sealing effect, service life
It is long.
The medium channel 10 is 4 and is evenly distributed on the side wall of valve seat installation set 6.Due to reasons in structure, usual medium
The aperture design of passage 10 it is smaller, set multiple to increase discharge capacity, it is to avoid produce bottle diameter, while medium is along valve seat installation set 6
Surrounding discharge, valve seat installation set 6 will not impact by opposite force.
Claims (2)
1. a kind of soft seal high-pressure safety valve, including valve body (1), valve seat (2), flap (3), guide sleeve (4) and spring (5), valve
Seat (2) is arranged on valve body (1) by valve seat installation set (6), and flap (3) top is located in guide sleeve (4) and can be in guide sleeve
(4) slided in, the top of spring (5) is enclosed on guide sleeve (4) outside, and the lower end of spring (5) offsets with the shaft shoulder (7) on flap (3),
Valve seat (2) upper end is fixed with high temperature high voltage resistant sealing ring (8), it is characterised in that：The upper end of the valve seat installation set (6) is provided with and led
To hole (9), the shaft shoulder (7) gap of flap (3), which coordinates, to be installed in pilot hole (9), the valve seat installation set below pilot hole (9)
(6) side wall is provided with medium channel (10)；The internal diameter of high temperature high voltage resistant sealing ring (8) is more than the internal diameter of valve seat (2).
2. soft seal high-pressure safety valve according to claim 1, it is characterised in that：The medium channel (10) be 4 and
It is evenly distributed on valve seat installation set (6) side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720236050.9U CN206539743U (en) | 2017-03-13 | 2017-03-13 | Soft seal high-pressure safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720236050.9U CN206539743U (en) | 2017-03-13 | 2017-03-13 | Soft seal high-pressure safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206539743U true CN206539743U (en) | 2017-10-03 |
Family
ID=59941305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720236050.9U Expired - Fee Related CN206539743U (en) | 2017-03-13 | 2017-03-13 | Soft seal high-pressure safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206539743U (en) |
-
2017
- 2017-03-13 CN CN201720236050.9U patent/CN206539743U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171003 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |