CN1727262A - Fireproof pressure vacuum gage cap for oil tank - Google Patents
Fireproof pressure vacuum gage cap for oil tank Download PDFInfo
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- CN1727262A CN1727262A CN 200510041309 CN200510041309A CN1727262A CN 1727262 A CN1727262 A CN 1727262A CN 200510041309 CN200510041309 CN 200510041309 CN 200510041309 A CN200510041309 A CN 200510041309A CN 1727262 A CN1727262 A CN 1727262A
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- flap
- anger
- air inlet
- housing
- giving vent
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Abstract
A fire-proofing vacuum-pressure cap for oil tank is composed of a casing, a water-proof cap installed to said casing, and the gas inlet valve and gas outlet valve, which are arranged in said casing. When the oil is filled in the oil tank, the gas outlet valve is opened. When the oil is discharged from the oil tank, the gas inlet valve is opened. Both valves are normally closed to isolate the oil tank from ambient environment, resulting in high safety.
Description
Technical field
The present invention relates to a kind of safety switching apparatus of petrol storage tank container, specifically about the safety switching apparatus on the petrol storage tank pressure balance mouth.
Background technology
Petrol storage tank is oil depot, petrol service station oil vessel, and refueling or outwards drain the oil from petrol storage tank in petrol storage tank is very frequent work.When refueling in petrol storage tank, the air in the petrol storage tank discharges, and when petrol storage tank was outwards drained the oil, outside air will replenish in petrol storage tank, with maintenance petrol storage tank internal pressure balance.So, all be provided with pressure balance mouth on the top of petrol storage tank, and tarpaulin is installed on pressure balance mouth, prevent that rainwater from directly entering in the petrol storage tank from pressure balance mouth.Yet, tarpaulin on the existing pressure balance mouth, just play and prevent that rainwater from directly entering effect in the petrol storage tank from pressure balance mouth, at any time petrol storage tank all communicates with atmosphere by pressure balance mouth, one of its shortcoming is: the oil gas in the petrol storage tank distributes in air for a long time, causes energy loss, environmental pollution and potential safety hazard; One of its shortcoming is: the extraneous unexpected spark that produces can blow into petrol storage tank with the wind, produces safety problem.
Summary of the invention
The objective of the invention is to have shortcoming, a kind of fireproof pressure vacuum gage cap for oil tank that can reduce the petrol storage tank energy loss, improve petrol storage tank environmental protection and safety performance is provided at prior art.
The tarpaulin that the technical scheme of realization the object of the invention comprises housing and is installed on the housing upper end, the housing lower end is shaped on the mechanism that is connected with pressure balance mouth; Mainly be in housing, to be provided with gas outlet valve apparatus and air inlet valve device; Described gas outlet valve apparatus is made of the valve seat in the housing, the flap and press-fiting in the spring at the flap back side of giving vent to anger of giving vent to anger; Described air inlet valve device is by air inlet flap, valve rod and be installed in the valve rod periphery and the spring of giving vent to anger between the flap back side constitutes, air inlet flap and give vent to anger and be shaped on the sealing surface that cooperatively interacts between the flap, the valve rod of air inlet flap passes from the flap centre hole of giving vent to anger, and is shaped on air extractor vent outside the flap centre hole of giving vent to anger.
In the above technical scheme, be provided with fire retardant device in the housing of gas outlet valve apparatus and air inlet valve device upside, this fire retardant device is made of two row's opposite sense bevelled fire resistant gates.
In the technique scheme, the flap of giving vent to anger is provided with the soft seal circle, and this soft seal circle cooperates with housing sealing surface of seat and air inlet valve flap seal face sealing respectively.
The present invention's beneficial effect compared with prior art is to be provided with gas outlet valve apparatus and air inlet valve device in housing, and when making petrol storage tank oil-feed state, the flap of giving vent to anger is opened, and air discharges in the petrol storage tank; When petrol storage tank went out oil condition, the air inlet flap was opened, and outside air enters petrol storage tank; When petrol storage tank stopped to pass in and out oil condition, give vent to anger flap and air inlet flap were closed simultaneously, and petrol storage tank is isolated from the outside, and had prevented that long-term outer race of gaseous state oil and extraneous unexpected burning things which may cause a fire disaster from entering petrol storage tank.Have advantages such as energy-saving and environmental protection, fire safety.
Description of drawings
Fig. 1 is a structure cutaway view of the present invention.
The specific embodiment
Now further describe technical scheme of the present invention in conjunction with the accompanying drawings and embodiments.
Fireproof pressure vacuum gage cap for oil tank as shown in Figure 1, the tarpaulin 13 that comprises housing 1 and be installed on housing 1 upper end, housing 1 lower end is shaped on the mechanism that is connected with pressure balance mouth, and this bindiny mechanism is a flange bindiny mechanism, also can adopt threaded connection.Be provided with gas outlet valve apparatus and air inlet valve device in housing 1, described gas outlet valve apparatus is made of the valve seat 18 in the housing 1, the flap 4 and press-fiting in the spring 5 at flap 4 back sides of giving vent to anger of giving vent to anger.Spring 5 lower ends are inlaid in the annular groove at flap 4 back sides of giving vent to anger, and the upper end withstands on the lower plane of support 8.Described air inlet valve device is by air inlet flap 2, valve rod 16 and be installed in valve rod 16 peripheries and the spring 6 of giving vent to anger between flap 4 back sides constitutes.Valve rod 16 upper ends are provided with nut 7, and spring 6 is sleeved on valve rod 16 peripheries and is fitted in nut 7 and gives vent to anger between the flap 4.Air inlet flap 2 and give vent to anger and be shaped on the sealing surface that cooperatively interacts between the flap 4, the valve rod 16 of air inlet flap 2 passes from flap 4 centre holes of giving vent to anger, be shaped on air extractor vent 17 outside flap 4 centre holes of giving vent to anger, this air extractor vent 17 has more than two, is uniformly distributed on the circumference of the flap 4 of giving vent to anger.The flap 4 of giving vent to anger is provided with soft seal circle 3, and this soft seal circle 3 is sealed and matched with valve seat 18 sealing surfaces and air inlet flap 2 sealing surfaces respectively.Be provided with fire retardant device in the housing 1 of gas outlet valve apparatus and air inlet valve device upside, this fire retardant device is made of two row's opposite sense bevelled fire resistant gates 9, can effectively be isolated between the two-layer fire resistant gate by extraneous comburant.On the step of fire resistant gate 9 by support 8 installations and housing 1, the upper end circumference is by pressing plate 11 and screw 12 fixed installations, and intermediate nut 14 pads 15 and screw rod press-fit.Tarpaulin 13 is fixedly mounted on by screw 10 on the installation convex shoulder of housing 1, and convex shoulder rectangular distribution setting on housing 1 is installed.Has the ring-shaped ventilation passage between week and housing 1 periphery in the tarpaulin 13.
Working process of the present invention is: when petrol storage tank stops to pass in and out oil condition, give vent to anger flap 4 and air inlet flap 2 closed under the effect of spring 5 and spring 6 respectively simultaneously, petrol storage tank is isolated from the outside, has prevented that long-term outer race of gaseous state oil and extraneous unexpected burning things which may cause a fire disaster from entering petrol storage tank; During petrol storage tank oil-feed state, the petrol storage tank internal pressure increases, and the elastic force that overcomes spring 5 flap 4 of will giving vent to anger upwards pushes open together with air inlet flap 2, and air discharges in the petrol storage tank; When petrol storage tank went out oil condition, the petrol storage tank internal pressure descended, and the elastic force that the interior negative pressure of petrol storage tank overcomes spring 6 draws back air inlet flap 2 downwards, and outside air enters petrol storage tank from the air extractor vent 17 of the flap 4 of giving vent to anger, and keeps the petrol storage tank internal and external pressure balance.
Claims (3)
1, a kind of fireproof pressure vacuum gage cap for oil tank, the tarpaulin (13) that comprises housing (1) and be installed on housing (1) upper end, housing (1) lower end is shaped on the mechanism that is connected with pressure balance mouth, it is characterized in that being provided with in housing (1) gas outlet valve apparatus and air inlet valve device; Described gas outlet valve apparatus is by valve seat (18), the flap of giving vent to anger (4) in the housing (1) and press-fit in the spring (5) at the flap of giving vent to anger (4) back side and constitute; Described air inlet valve device by air inlet flap (2), valve rod (16) and be installed in valve rod (16) periphery and the flap of giving vent to anger (4) back side between spring (6) constitute, be shaped on the sealing surface that cooperatively interacts between air inlet flap (2) and the flap of giving vent to anger (4), the valve rod (6) of air inlet flap (2) passes from the flap of giving vent to anger (4) centre hole, is shaped on air extractor vent (17) outside the flap of giving vent to anger (4) centre hole.
2, fireproof pressure vacuum gage cap for oil tank according to claim 1 is characterized in that being provided with fire retardant device in the housing (1) of gas outlet valve apparatus and air inlet valve device upside, and this fire retardant device is made of two row's opposite sense bevelled fire resistant gates (9).
3, fireproof pressure vacuum gage cap for oil tank according to claim 1 and 2, the flap (4) that it is characterized in that giving vent to anger is provided with soft seal circle (3), and this soft seal circle (3) is sealed and matched with housing valve seat (18) sealing surface and air inlet flap (2) sealing surface respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510041309 CN1727262A (en) | 2005-07-28 | 2005-07-28 | Fireproof pressure vacuum gage cap for oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510041309 CN1727262A (en) | 2005-07-28 | 2005-07-28 | Fireproof pressure vacuum gage cap for oil tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1727262A true CN1727262A (en) | 2006-02-01 |
Family
ID=35926815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510041309 Pending CN1727262A (en) | 2005-07-28 | 2005-07-28 | Fireproof pressure vacuum gage cap for oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1727262A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103538822A (en) * | 2012-07-10 | 2014-01-29 | 成都科盛石油科技有限公司 | Ventilation cap with fire retardance function |
| CN112594427A (en) * | 2020-12-21 | 2021-04-02 | 徐州德胜石油机械有限公司 | Oil tank fire-retardant pressure valve that leakproofness is good |
| CN113566003A (en) * | 2021-07-13 | 2021-10-29 | 浙江海博石油设备有限公司 | Vacuum pressure valve for oil storage tank of gas station |
-
2005
- 2005-07-28 CN CN 200510041309 patent/CN1727262A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103538822A (en) * | 2012-07-10 | 2014-01-29 | 成都科盛石油科技有限公司 | Ventilation cap with fire retardance function |
| CN112594427A (en) * | 2020-12-21 | 2021-04-02 | 徐州德胜石油机械有限公司 | Oil tank fire-retardant pressure valve that leakproofness is good |
| CN113566003A (en) * | 2021-07-13 | 2021-10-29 | 浙江海博石油设备有限公司 | Vacuum pressure valve for oil storage tank of gas station |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |