CN207906533U - Double containment type emergency relief valve - Google Patents
Double containment type emergency relief valve Download PDFInfo
- Publication number
- CN207906533U CN207906533U CN201820193365.4U CN201820193365U CN207906533U CN 207906533 U CN207906533 U CN 207906533U CN 201820193365 U CN201820193365 U CN 201820193365U CN 207906533 U CN207906533 U CN 207906533U
- Authority
- CN
- China
- Prior art keywords
- shell
- pressure control
- holding groove
- liquid holding
- sealing
- 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
Landscapes
- Safety Valves (AREA)
Abstract
The utility model provides a kind of double containment type emergency relief valve, including：Shell, liquid holding groove, baffle and pressure control counterweight shell, the liquid holding groove are arranged around the outside of shell circumferential direction, and the upper end of the baffle is connect with the lower surface of the pressure control counterweight shell；The baffle is when the pressure control counterweight shell is installed to the opening of the shell, the baffle is inserted into the liquid holding groove and the liquid holding groove is divided into interconnected inner groove and outer groove, the first sealing is formed between the edge and the lower surface of the pressure control counterweight shell of the direction pressure control counterweight shell of the shell, and sealing liquid is contained in the liquid holding groove to form the second sealing.The control pressure that the utility model can be used at the top of chemicals and oil product storage tank releases, reduces gas discharge in tank, and pressure of releasing can be set by pressure control counterweight shell, after overpressure relief, the reset of pressure control counterweight shell still can keep two seals, improve sealing effect after decompression cover pressure release resets.
Description
Technical field
The utility model is related to valve technology field, more particularly to a kind of double containment type emergency relief valve.
Background technology
With the raising of environmental protection standard, the blowdown of the toxic and harmful gas such as exhaust gas, VOC gas is required higher and higher.It is existing
There are the diaphragm seal sealing that the emergency relief valve in technology all uses, sealing element to be sealed with following three points deficiency：1, amount of leakage is excessive
Pollute environment；2, sealing surface aging and dielectric corrosion sealing surface；3, sealing effect is poor after decompression cover pressure release resets.In the prior art
Emergency relief valve cause leakage rate to be far longer than code requirement because of a variety of causes, prolonged leakage not only polluted environment,
Also add the energy consumption and maintenance cost of user.
Utility model content
The utility model provides a kind of double containment type emergency relief valve, to solve prior art emergency discharge valve sealing surface
The problem of sealing effect difference after easy to aging, decompression cover pressure release resets.
To solve the above problems, the one side as the utility model, provides a kind of double containment type emergency relief valve,
Including：Shell, liquid holding groove, baffle and pressure control counterweight shell, the liquid holding groove are arranged around the outside of shell circumferential direction, the gear
The upper end of plate is connect with the lower surface of the pressure control counterweight shell；The baffle is installed to the shell in the pressure control counterweight shell
When opening, the baffle is inserted into the liquid holding groove and the liquid holding groove is divided into interconnected inner groove and outer shroud
It is close to form first for slot between the edge and the lower surface of the pressure control counterweight shell of the direction pressure control counterweight shell of the shell
It seals, sealing liquid is contained in the liquid holding groove to form the second sealing.
Preferably, first sealing uses diaphragm seal.
Preferably, the double containment type emergency relief valve further includes liquid level gauge, and the liquid level gauge is installed to the liquid holding groove
Outside, and one end of the liquid level gauge is connected to the liquid holding groove.
Preferably, it is provided at the position corresponding to the outer groove of the pressure control counterweight shell for the liquid holding groove
The filling opening of liquid feeding is equipped with liquid feeding cap at the filling opening.
The control pressure that the utility model can be used at the top of chemicals and oil product storage tank releases, reduces gas discharge in tank,
And pressure of releasing can be set by pressure control counterweight shell, after overpressure relief, the reset of pressure control counterweight shell still can keep two seals,
Improve sealing effect after decompression cover pressure release resets.
Description of the drawings
Fig. 1 schematically show the utility model no pressure, without leakage when schematic diagram；
Fig. 2 schematically shows the utility model no superpressure, have leakage when schematic diagram；
Fig. 3 schematically shows schematic diagram of the utility model in superpressure.
Reference numeral in figure：1, shell；2, liquid holding groove；3, baffle；4, pressure control counterweight shell；5, inner groove；6, outer groove；7、
Liquid level gauge；8, liquid feeding cap；9, the first sealing；10, liquid is sealed.
Specific implementation mode
The embodiments of the present invention are described in detail below in conjunction with attached drawing, but the utility model can be by right
It is required that the multitude of different ways for limiting and covering is implemented.
The one side of the utility model provides a kind of double containment type emergency relief valve, including：Shell 1, liquid holding groove 2,
Baffle 3 and pressure control counterweight shell 4, the liquid holding groove 2 is around the circumferential outside setting of the shell 1, the upper end of the baffle 3 and institute
State the lower surface connection of pressure control counterweight shell 4；The baffle 3 is installed to the opening of the shell 1 in the pressure control counterweight shell 4
When, the baffle 3 is inserted into the liquid holding groove 2 and the liquid holding groove 2 is divided into interconnected inner groove 5 and outer groove 6,
The first sealing is formed between the edge and the lower surface of the pressure control counterweight shell 4 of the direction of the shell 1 pressure control counterweight shell 4
9, sealing liquid 10 is contained in the liquid holding groove 2 to form the second sealing.Preferably, first sealing is close using diaphragm
Envelope.
It please refers to Fig.1 to Fig. 3, the utility model is formed at two and seals, i.e., first seals 9 and formed by sealing liquid 10
Second sealing.
As shown in Figure 1, when no pressure, without leakage when, the inner groove 5 and outer groove 6 of 3 both sides of baffle are by 10 shape of sealing liquid
At it is effective second seal, meanwhile, then formed between shell 1 and the bottom surface of pressure control counterweight shell 4 it is effective first sealing, gas without
Method passes through the first sealing and the second sealing.
As shown in Fig. 2, when no superpressure, have leakage when, the first seal failure, gas by first sealing enter inner groove 5,
It is extruded from inner groove 5 to outer groove 6 to which liquid 10 will be sealed, to form difference in height as shown in Figure 2.At this point, second is close
Envelope is still effective, and the gas leaked out enters inner groove 6, but still is effectively sealed against by the second sealing.
As shown in figure 3, when superpressure, the first seal failure, gas enters in inner groove 5, and the liquid level in inner groove 5 is made to drop
Liquid level low, in outer groove 6 increases, and when the liquid level difference height of inside and outside annular groove both sides exceeds set point, gas starts to be vented air,
If gas substantial increase is discharged, pressure control counterweight shell 4 can be jacked up upwards, with the internal pressure of emergency discharge storage tank.
When gas is discharged, after tank inner pressure discharges, pressure control counterweight shell 4 resets downwards, reseals gas in storage tank
Body.
By adopting the above-described technical solution, the control pressure that the utility model can be used at the top of chemicals and oil product storage tank
It releases, reduce gas discharge in tank, and release pressure, after overpressure relief, pressure control counterweight shell can be set by pressure control counterweight shell 4
4 resets still can keep two seals, improve sealing effect after decompression cover pressure release resets.
Preferably, the double containment type emergency relief valve further includes liquid level gauge 7, and the liquid level gauge 7 is installed to the Sheng liquid
The outside of slot 2, and one end of the liquid level gauge 7 is connected to the liquid holding groove 2.
Preferably, it is provided at the position corresponding to the outer groove 6 of the pressure control counterweight shell 4 for the Sheng liquid
The filling opening of 2 liquid feeding of slot is equipped with liquid feeding cap 8 at the filling opening.
It is provided in emergency relief valve production specification in the prior art：After discharge resets, when less than setting pressure 75%, allow
Leakage rate is 20Nm3/h.After the utility model, certain pressure can be set by pressure control counterweight shell 4, to be fully solved
Leakage problem, for bleeder valve before activation with after startup, leakage rate is all 0.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (4)
1. a kind of double containment type emergency relief valve, which is characterized in that including：Shell (1), liquid holding groove (2), baffle (3) and pressure control
Counterweight shell (4), the liquid holding groove (2) around the shell (1) circumferential direction outside setting, the upper end of the baffle (3) with it is described
The lower surface of pressure control counterweight shell (4) connects；The baffle (3) is installed to opening for the shell (1) in the pressure control counterweight shell (4)
When at mouthful, the baffle (3) is inserted into the liquid holding groove (2) and the liquid holding groove (2) is divided into interconnected inner groove
(5) and outer groove (6), the edge of the direction pressure control counterweight shell (4) of the shell (1) and the pressure control counterweight shell (4)
The first sealing is formed between lower surface, and sealing liquid (10) is contained in the liquid holding groove (2) to form the second sealing.
2. double containment type emergency relief valve according to claim 1, which is characterized in that first sealing is close using diaphragm
Envelope.
3. double containment type emergency relief valve according to claim 1, which is characterized in that the double containment type emergency relief valve
Further include liquid level gauge (7), the liquid level gauge (7) is installed to the outside of the liquid holding groove (2), and one end of the liquid level gauge (7)
It is connected to the liquid holding groove (2).
4. double containment type emergency relief valve according to claim 1, which is characterized in that pair of the pressure control counterweight shell (4)
It is provided at the position of outer groove described in Ying Yu (6) for the filling opening to the liquid holding groove (2) liquid feeding, is pacified at the filling opening
Equipped with liquid feeding cap (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820193365.4U CN207906533U (en) | 2018-02-05 | 2018-02-05 | Double containment type emergency relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820193365.4U CN207906533U (en) | 2018-02-05 | 2018-02-05 | Double containment type emergency relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207906533U true CN207906533U (en) | 2018-09-25 |
Family
ID=63562113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820193365.4U Expired - Fee Related CN207906533U (en) | 2018-02-05 | 2018-02-05 | Double containment type emergency relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207906533U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223860A (en) * | 2018-02-05 | 2018-06-29 | 陈远华 | Double containment type emergency relief valve |
-
2018
- 2018-02-05 CN CN201820193365.4U patent/CN207906533U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223860A (en) * | 2018-02-05 | 2018-06-29 | 陈远华 | Double containment type emergency relief valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206528878U (en) | A kind of nitrogen seal device of harmful influence storage tank | |
| CN104183366A (en) | Transformer rebreather structure | |
| CN207906533U (en) | Double containment type emergency relief valve | |
| CN110294221B (en) | Anti-leakage floating roof tank and anti-leakage method | |
| CN202109081U (en) | Ball valve | |
| CN108223860A (en) | Double containment type emergency relief valve | |
| CN208647666U (en) | A kind of petroleum storage tank high-efficiency soft sealing device | |
| CN203258128U (en) | Safety valve for vacuum drying tank | |
| CN211944631U (en) | Overpressure protection device for floating roof sealing system | |
| CN207029923U (en) | A kind of liquid discharge device | |
| CN203570710U (en) | Automatic exhaust oil tank | |
| CN205991210U (en) | A kind of deadweight safety valve | |
| CN205577024U (en) | From stationary flow jar of taking steady voltage function | |
| CN205100301U (en) | Prevent drowned storage water tank | |
| CN216582068U (en) | Unit box body of floating disc | |
| CN209164209U (en) | The jettison gear of hydraulic oil container | |
| CN109160116A (en) | A kind of outdoor wet tank | |
| CN202925598U (en) | Silence type pipeline non-negative pressure water supply device | |
| CN208886039U (en) | A kind of deadweight safety valve | |
| CN103591059B (en) | Height puts the totally-enclosed hydraulic oil container of negative pressure | |
| CN210762082U (en) | Container for storing volatile liquid | |
| CN203442245U (en) | Hydraulic safety valve | |
| CN220792779U (en) | Air injection prevention device for overflow port of deaerator | |
| CN203351340U (en) | Transformer oil cup with buffering adjusting function | |
| CN202598090U (en) | Pipeline joint for lubricating system |
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: 20180925 Termination date: 20210205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |