CN204822719U - Nitrogen seals formula internal floating roof tank device - Google Patents
Nitrogen seals formula internal floating roof tank device Download PDFInfo
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- CN204822719U CN204822719U CN201520344693.6U CN201520344693U CN204822719U CN 204822719 U CN204822719 U CN 204822719U CN 201520344693 U CN201520344693 U CN 201520344693U CN 204822719 U CN204822719 U CN 204822719U
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- valve
- floating roof
- internal floating
- nitrogen
- roof tank
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Abstract
The utility model provides a nitrogen seals formula internal floating roof tank device, the device including internal floating roof tank (4) and through the pipeline connect gradually to nitrogen gas pipeline check valve (1) and the the control unit at internal floating roof tank (4) top, wherein, the control unit seals valves (2) by nitrogen parallelly connected each other and restricted aperture board bypass (3) is constituteed, nitrogen seals valves (2) by the main inlet control valve with locate respectively trip valve (6) at main inlet control valve both ends are constituteed, the bypass of restricted aperture board is by restricted aperture board (7) and locate respectively trip valve (8) at restricted aperture board both ends are constituteed. Nitrogen seals formula internal floating roof tank device is suitable for the storage light oil, simple structure, and convenient operation helps ensureing the safety and stability operation of light oil storage.
Description
Technical field
The utility model relates to a kind of internal floating roof tank device of improvement, particularly, relates to a kind of nitrogen envelope formula internal floating roof tank device being suitable for storing lightweight oil.
Background technology
At present, along with the not section of petrochemical enterprise to safety and environmental demands is upgraded, Inner Floating Roof Device, when carrying out clean cargo tank design, is selected by increasing enterprise.But, according to the casualty statistics result display that owned enterprise of group company of China Petrochemical Industry occurs over nearly 10 years, the accident probability of internal floating roof tank is far above the accident of other type storage tank, and storage medium sulfur content and volatile component content is high etc. that factor is the major cause causing light oil tank presence of fire accident.
Nitrogen envelope is one of measure ensureing light oil tank safe operation, and the effect of nitrogen envelope mainly prevents the fire gases of the tank top spaces that ignite such as the spontaneous combustion of sulphur iron compound, thunderbolt, electrostatic or naked light, prevents storage medium oxidative polymerization etc. simultaneously.
High and easily oxidized by the coal tar naphtha sulfur content of broken coal (brown coal) pressurized gasification mode output, react with tank skin Long contact time and easily form the spontaneous combustion of sulphur iron compound, its poisonous and hazardous light component volatilized not only causes infliction of body to people, and causes air environmental pollution.Therefore, it is necessary for arranging nitrogen envelope to coal tar naphtha internal floating roof tank.
Utility model content
The purpose of this utility model is the internal floating roof tank device providing a kind of improvement, and this device is suitable for storing lightweight oil, and structure is simple, easy to operate, contributes to the safe and stable operation ensureing that lightweight oil stores.
Above-mentioned purpose is achieved through the following technical solutions.
The utility model provides a kind of nitrogen envelope formula internal floating roof tank device, described device is comprised internal floating roof tank and is connected to nitrogen pipeline boiler check valve and the control unit at internal floating roof tank top by pipeline successively, wherein, described control unit seals valve group by nitrogen parallel with one another and restriction orifice bypass forms, described nitrogen envelope valve group comprises main inlet control valve and is located at the shutoff valve at main inlet control valve two ends respectively, and described restriction orifice bypass comprises Gas Throttling Orifice Plate and is located at the shutoff valve at Gas Throttling Orifice Plate two ends respectively.
Described nitrogen pipeline boiler check valve can control the unidirectional inflow control unit of nitrogen and can not return nitrogen pipeline from control unit, is convenient to prevent foreign matter, oil gas enters nitrogen pipeline.Term " boiler check valve " herein refers to unidirectional inflow valve.
Main inlet control valve in described nitrogen envelope valve group can be pneumatic adjusting valve, electric control valve, direct-operated regulator, is preferably direct-operated regulator.In an embodiment of the present utility model, main inlet control valve is DN50 direct-operated regulator, and the shutoff valve at its two ends is the hand valve of DN50.
In an embodiment of the present utility model, the restriction orifice in restriction orifice bypass is DN50 restriction orifice, and the shutoff valve at its two ends is the hand valve of DN50.By increasing restriction orifice bypass, at direct-operated regulator et out of order or between verification turn(a)round, the shutoff valve at direct-operated regulator two ends can be closed, opens the shutoff valve of restriction orifice bypass, nitrogen, by entering storage tank after the decompression of restriction orifice, supplements nitrogen to storage tank.
In an embodiment of the present utility model, described device also comprises the breathing valve at the top being located at internal floating roof tank.Described breathing valve is set as two-way valve to regulate the pressure in storage tank.Preferably, described breathing valve is the breathing valve of band flame trap, to reduce the risk of potential fire.In an embodiment of the present utility model, described breathing valve can be DN250 band exhalation adapter fire-retardant breather valve, avoid the oil gas volatilized directly to airborne release pollution on the environment and to the healthy harm caused of operations staff, and reduce potential potential safety hazard, also can do unified recycling to the oil gas volatilized simultaneously.When control unit to cause because of malfunctioning can not the closedown in time of accident that in storage tank, gas-phase space pressure is higher than 1.5KPa, arrange outward by breathing valve.When control unit to cause because of malfunctioning can not the unlatching in time of accident that in internal floating roof tank, gas-phase space Pressure Drop is low to moderate-0.3KPa, in tank, supplement air by breathing valve.
In an embodiment of the present utility model, described device also comprises the emergency decompression valve at the top being located at internal floating roof tank, to ensure that the timely safely of gas-phase space pressure in the state of accident of nitrogen envelope valve group place is discharged.
Conventional internal floating roof tank also comprises tank skin hoop breather port and tank deck breather port.In device of the present utility model, the tank skin hoop breather port on internal floating roof tank and tank deck breather port can adopt any shutoff mode to rectify and improve, to realize the object of nitrogen envelope.Preferably, the tank skin hoop breather port on internal floating roof tank and tank deck breather port adopt detouchable shutoff mode to rectify and improve, and in time storage tank can be reverted to general inner floating roof mode and run after being convenient to the long-time withdraw from use of nitrogen, improve the ability of resisting risk.
The internal floating roof tank device of improvement of the present utility model has but is not limited to following beneficial effect:
1, by connection nitrogen envelope valve group parallel with one another and restriction orifice bypass, at main inlet control valve et out of order or can verify between turn(a)round, open restriction orifice bypass, nitrogen, by entering storage tank after the decompression of restriction orifice, supplements nitrogen to storage tank.
2, because nitrogen envelope formula internal floating roof tank device of the present utility model also comprises emergency decompression valve, ensure that the timely safely of gas-phase space pressure in the state of accident of nitrogen envelope valve group place is discharged.
3, by adopting detouchable shutoff mode to rectify and improve to the tank skin hoop breather port on internal floating roof tank, tank deck breather port, in time this device can be reverted to conventional internal floating roof tank mode after being convenient to the long-time withdraw from use of nitrogen to run, ensure internal floating roof tank energy safe and stable operation.
4, by nitrogen of the present utility model envelope formula internal floating roof tank device, greatly reducing clean cargo and to volatilize the loss caused, and the pollution that environment health is caused and injury.
5, by nitrogen of the present utility model envelope formula internal floating roof tank device, prevent the reasons such as the spontaneous combustion of sulphur iron compound, thunderbolt, electrostatic or naked light to ignite the fire gases of tank top space, prevent storage medium oxidative polymerization etc. simultaneously.
Accompanying drawing explanation
Below, describe embodiment of the present utility model in detail by reference to the accompanying drawings, wherein:
Fig. 1 shows the structural representation of the embodiment of a kind of nitrogen envelope formula internal floating roof tank device of the present utility model.
In figure:
1, nitrogen pipeline boiler check valve 2, nitrogen envelope valve group 3, restriction orifice bypass
4, internal floating roof tank 5, direct-operated regulator 6, shutoff valve
7, the breathing valve of restriction orifice 8, shutoff valve 9, band flame trap
10, emergency decompression valve 11, tank skin hoop breather port 12, tank deck breather port
Detailed description of the invention
Further illustrate the utility model below by specific embodiment, but these embodiments should be understood to the use only for specifically describing more in detail, and should not be construed as limiting the utility model in any form.
This part to utility model test in institute practicality to material and test method carry out general description.Although the many materials used for the utility model object and method of operation are well known in the art, the utility model is still described in detail as far as possible at this.It will be apparent to those skilled in the art that within a context, if not specified, the utility model material therefor and method of operation are well known in the art.
Detailed description of the invention of the present utility model is described in more detail below in conjunction with accompanying drawing.
Fig. 1 shows the structural representation of the embodiment of a kind of nitrogen envelope formula internal floating roof tank device of the present utility model.Described device is comprised internal floating roof tank 4 and is connected to nitrogen pipeline boiler check valve 1 and the control unit at internal floating roof tank 4 top by pipeline successively, wherein, described control unit seals valve group 2 by nitrogen parallel with one another and restriction orifice bypass 3 forms, described nitrogen envelope valve group 2 comprises direct-operated regulator 5 and is located at the shutoff valve 6 at direct-operated regulator 5 two ends respectively, and described restriction orifice bypass 3 comprises restriction orifice 7 and is located at the shutoff valve 8 at restriction orifice 7 two ends respectively.
Device of the present utility model also comprises the breathing valve 9 of the band flame trap being located at internal floating roof tank 4 top.
Device of the present utility model also comprises the emergency decompression valve 10 being located at internal floating roof tank 4 top.
Tank skin hoop breather port 11 and tank deck breather port 12 adopt detouchable shutoff mode to rectify and improve.
When using device of the present utility model, under normal circumstances, nitrogen enters storage tank by nitrogen valve group 2, and in maintenance tank, gas-phase space pressure is at about 1.2KPa, when gas-phase space pressure is higher than 1.4KPa, direct-operated regulator 5 is closed, and stops nitrogen supply (NS), when gas-phase space pressure is lower than 0.8KPa, direct-operated regulator is opened, supplementing nitrogen, when gas-phase space pressure is higher than 1.5KPa, discharging by being with the breathing valve 9 of flame trap.
When direct-operated regulator 5 et out of order or between verification turn(a)round, close the shutoff valve 6 at direct-operated regulator two ends, open the shutoff valve 8 of restriction orifice bypass, nitrogen, by entering storage tank after the decompression of restriction orifice 7, supplements nitrogen to storage tank.When nitrogen seals valve group 2 place in the state of accident, cause gas-phase space hypertonia, by emergency decompression valve 10 pressure release.
Although the utility model has carried out description to a certain degree, significantly, under the condition not departing from spirit and scope of the present utility model, can carry out the suitable change of each condition.Be appreciated that the utility model is not limited to described embodiment, and be attributed to the scope of claim, it comprises the equivalent replacement of described each factor.
Claims (9)
1. a nitrogen envelope formula internal floating roof tank device, this device comprises internal floating roof tank (4), it is characterized in that, described device also comprises the nitrogen pipeline boiler check valve (1) and the control unit that are connected to described internal floating roof tank (4) top by pipeline successively, wherein, described control unit seals valve group (2) by nitrogen parallel with one another and restriction orifice bypass (3) forms, described nitrogen envelope valve group (2) is made up of main inlet control valve and the shutoff valve (6) of being located at described main inlet control valve two ends respectively, described restriction orifice bypass is made up of restriction orifice (7) and the shutoff valve (8) of being located at described restriction orifice two ends respectively.
2. device according to claim 1, is characterized in that, the main inlet control valve in described nitrogen envelope valve group (2) is direct-operated regulator (5).
3. device according to claim 1, it is characterized in that, main inlet control valve in described nitrogen envelope valve group (2) is DN50 direct-operated regulator (5), is located at the hand valve that the shutoff valve (6) at described direct-operated regulator (5) two ends is DN50.
4. device according to claim 1, it is characterized in that, in described restriction orifice bypass (3), restriction orifice (7) is DN50 restriction orifice, is located at the hand valve that the shutoff valve (8) at described restriction orifice (7) two ends is DN50.
5. device according to claim 1, is characterized in that, described device also comprises the breathing valve at the top being located at internal floating roof tank.
6. device according to claim 5, is characterized in that, described breathing valve is the breathing valve of band flame trap.
7. device according to claim 5, is characterized in that, described breathing valve is DN250 band exhalation adapter fire-retardant breather valve.
8. device according to any one of claim 1 to 7, is characterized in that, described device also comprises the emergency decompression valve (10) at the top being located at described internal floating roof tank (4).
9. device according to any one of claim 1 to 7, it is characterized in that, the tank skin hoop breather port (11) on described internal floating roof tank (4) and tank deck breather port (12) adopt detouchable shutoff mode to rectify and improve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520344693.6U CN204822719U (en) | 2015-05-26 | 2015-05-26 | Nitrogen seals formula internal floating roof tank device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520344693.6U CN204822719U (en) | 2015-05-26 | 2015-05-26 | Nitrogen seals formula internal floating roof tank device |
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| Publication Number | Publication Date |
|---|---|
| CN204822719U true CN204822719U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520344693.6U Expired - Fee Related CN204822719U (en) | 2015-05-26 | 2015-05-26 | Nitrogen seals formula internal floating roof tank device |
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| CN (1) | CN204822719U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764438A (en) * | 2017-01-18 | 2017-05-31 | 天津神封科技发展有限公司 | Mobile emergency supplies nitrogen device |
| CN107720336A (en) * | 2017-08-18 | 2018-02-23 | 中国神华能源股份有限公司 | Discharge system |
| CN107816633A (en) * | 2017-11-02 | 2018-03-20 | 钟晓山 | A kind of storage tank nitrogen seals integral type integrated interface |
| CN110953483A (en) * | 2019-12-27 | 2020-04-03 | 青岛博纳德机械科技有限公司 | Chemical agent adding method and device |
-
2015
- 2015-05-26 CN CN201520344693.6U patent/CN204822719U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764438A (en) * | 2017-01-18 | 2017-05-31 | 天津神封科技发展有限公司 | Mobile emergency supplies nitrogen device |
| CN107720336A (en) * | 2017-08-18 | 2018-02-23 | 中国神华能源股份有限公司 | Discharge system |
| CN107816633A (en) * | 2017-11-02 | 2018-03-20 | 钟晓山 | A kind of storage tank nitrogen seals integral type integrated interface |
| CN107816633B (en) * | 2017-11-02 | 2020-06-30 | 钟晓山 | Storage tank nitrogen seals integrated interface of style |
| CN110953483A (en) * | 2019-12-27 | 2020-04-03 | 青岛博纳德机械科技有限公司 | Chemical agent adding method and device |
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| 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: 20151202 Termination date: 20200526 |
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| CF01 | Termination of patent right due to non-payment of annual fee |