CN205240405U - A a nitrogen multilayer level controlling means of system for large -scale storage tank - Google Patents
A a nitrogen multilayer level controlling means of system for large -scale storage tank Download PDFInfo
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- CN205240405U CN205240405U CN201520876796.7U CN201520876796U CN205240405U CN 205240405 U CN205240405 U CN 205240405U CN 201520876796 U CN201520876796 U CN 201520876796U CN 205240405 U CN205240405 U CN 205240405U
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Abstract
The utility model discloses a nitrogen multilayer level controlling means of system for large -scale storage tank, it includes nitrogen gas gas transmission mouth (1), main gas -supply pipe (2), major loop nitrogen seals valve (3), minor loop nitrogen seals valve (4), pneumatic valve (5), inferior gas -supply pipe (6) and urgent gas -supply pipe (7), main gas -supply pipe (2) are connected to nitrogen gas gas transmission mouth (1), it seals valve (3) to have set up major loop nitrogen on main gas -supply pipe (2), connected in parallel inferior gas -supply pipe (6) and urgent gas -supply pipe (7) in the below of main gas -supply pipe (2), it seals valve (4) to have set up minor loop nitrogen on inferior gas -supply pipe (6), set up on urgent gas -supply pipe (7) pneumatic valve (5), the other end of main gas -supply pipe (2) is connected to the top of storage tank (8), top intermediate position at storage tank (8) has set up right back -fire relief breather valve (9) respectively, left side back -fire relief breather valve (10) and breathing manhole (11).
Description
Technical field
The utility model relates to a kind of envelope of the nitrogen for large-scale storage tank system multi-layer control device.
Background technology
For regulating liquefaction product storage tank internal and external pressure balance; prevent danger product ingress of air, chemical industry storage enterprise design storage tanks nitrogen seals system conventionally, nitrogen is full of to the gas-phase space on storage tank top; by danger product in storage tank and extraneous air isolation, reduce dangerization product volatilizing loss problem thereby reach with nitrogen. Nitrogen envelope system is to utilize nitrogen (N2) form the device of faint malleation at the gas-phase space of sealing liquefaction product storage tank, storage tank internal memory liquefaction product are hedged off from the outer world, avoid it contact rear oxidation with air and go bad, avoid in addition the distortion of tank deck wall by the pressure-fired of maintenance storage tank. But there is sometimes failure conditions in the use procedure of nitrogen envelope system. Generally, the nitrogen envelope system arranging on storage tank only includes a nitrogen envelope valve and a nitrogen feeding pipe road, not multi-layer control design, and there is drawback in the control device of such single rice delivery nitrogen pipeline, accuracy is not high, easily occurs that nitrogen input quantity does not reach actual requirement. In addition, nitrogen input quantity cannot be consistent and also can have great potential safety hazard with storage tank demand.
Summary of the invention
The utility model provides a kind of envelope of the nitrogen for large-scale storage tank system multi-layer control device, it can meet the benefit nitrogen requirement of moment atm number, more can control accurately nitrogen magnitude of recruitment, thereby realize the accurate object of supplementing nitrogen, improving nitrogen envelope effect, guaranteeing to mend material loss in nitrogen safety, reduction tank, the commercial application that storage tank is maximized is significant.
The utility model has adopted following technical scheme: a kind of envelope of the nitrogen for large-scale storage tank system multi-layer control device, it comprises nitrogen blowing mouth (1), main appendix (2), major loop nitrogen envelope valve (3), minor loop nitrogen envelope valve (4), pneumatic operated valve (5), inferior appendix (6) and urgent appendix (7), nitrogen blowing mouth (1) connects main appendix (2), on main appendix (2), be provided with major loop nitrogen envelope valve (3), in the below parallel connection of main appendix (2) inferior appendix (6) and urgent appendix (7), on inferior appendix (6), be provided with minor loop nitrogen envelope valve (4), on urgent appendix (7), be provided with pneumatic operated valve (5), the other end of main appendix (2) is connected to the top of storage tank (8), be provided with respectively right fire-retardant breather valve (9) in the crown center position of storage tank (8), left fire-retardant breather valve (10) and breathing manhole (11).
The caliber of described main appendix (2) is made as 80mm; The caliber of described inferior appendix (6) is made as 30mm; The caliber of described urgent appendix (7) is made as 30mm.
The utlity model has following beneficial effect: adopted after above technical scheme, main appendix and the inferior appendix of different tube diameters have been installed on storage tank nitrogen envelope system multi-layer control device of the present utility model, and on main appendix, be provided with major loop nitrogen envelope valve, on inferior appendix, be provided with minor loop nitrogen envelope valve. In the time that storage tank nitrogen seal pressure demand is-50～2000pa, the automatic control of major loop nitrogen envelope valve is opened main appendix and is carried out nitrogen conveying; In the time that nitrogen seal pressure demand reaches 2000pa～4000pa, when main appendix carries out gas transmission, set minor loop nitrogen envelope valve and also automatically open, realize main appendix and carry out nitrogen conveying with time appendix simultaneously; As the be less than-50pa of pressure of storage tank nitrogen envelope, while needing that moment, atm number was mended nitrogen, carry out remote control in CCC by computer by operating personnel, the pneumatic operated valve on urgent appendix is opened, realize three appendixs and carry out nitrogen simultaneously and supplement. Design of the present utility model not only can meet the demand of the logical nitrogen of moment atm number, all right nitrogen use amount of accurately controlling, and the protective layer of the isolated air of increase liquefaction product material, makes the interior nitrogen sealing pressure of tank more stable. This device can reduce the volatilization of material in tank, reduces material loss, improves the security of nitrogen envelope, can meet the storage request of great majority dangerization product.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
In Fig. 1, the utility model provides a kind of envelope of the nitrogen for large-scale storage tank system multi-layer control device, it comprises nitrogen blowing mouth (1), main appendix (2), major loop nitrogen envelope valve (3), minor loop nitrogen envelope valve (4), pneumatic operated valve (5), inferior appendix (6) and urgent appendix (7), nitrogen blowing mouth (1) connects main appendix (2), on main appendix (2), be provided with major loop nitrogen envelope valve (3), in the below parallel connection of main appendix (2) inferior appendix (6) and urgent appendix (7), on inferior appendix (6), be provided with minor loop nitrogen envelope valve (4), on urgent appendix (7), be provided with pneumatic operated valve (5), the other end of main appendix (2) is connected to the top of storage tank (8), be provided with respectively right fire-retardant breather valve (9) in the crown center position of storage tank (8), left fire-retardant breather valve (10) and breathing manhole (11).
The caliber of described main appendix (2) is set to 80mm; The caliber of described inferior appendix (6) is set to 30mm; The caliber of described urgent appendix (7) is set to 30mm.
The course of work of the present utility model is: nitrogen is delivered to the process of storage tank from nitrogen delivery port, the pattern that while being provided with different nitrogen demand, the pipeline of different tube diameters is carried. In the time that storage tank nitrogen seal pressure demand is-50～2000pa, the automatic control of setting major loop nitrogen envelope valve is opened main appendix and is carried out nitrogen conveying; In the time that nitrogen seal pressure demand reaches 2000pa～4000pa, when main appendix carries out gas transmission, set minor loop nitrogen envelope valve and also automatically open, realize main appendix and carry out nitrogen conveying with time appendix simultaneously; In the time of be less than-50pa of storage tank nitrogen seal pressure, while needing the logical nitrogen of moment atm number, carried out Long-distance Control by operating personnel in CCC by computer the pneumatic operated valve arranging on the urgent appendix on this device opened, realize three appendixs carry out simultaneously nitrogen supplement. Design of the present utility model not only can meet the demand of the logical nitrogen of moment atm number, all right nitrogen use amount of accurately controlling, and the protective layer of the isolated air of increase liquefaction product material, makes the interior nitrogen sealing pressure of tank more stable. This device can reduce the volatilization of material in tank, reduces material loss, improves the security of nitrogen envelope, can meet the storage request of great majority dangerization product.
Be understandable that, above about specific descriptions of the present utility model, only for being described, the utility model is not limited to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as meet, all within protection domain of the present utility model.
Claims (2)
1. the envelope of the nitrogen for a large-scale storage tank system multi-layer control device, it comprises nitrogen blowing mouth (1), main appendix (2), major loop nitrogen envelope valve (3), minor loop nitrogen envelope valve (4), pneumatic operated valve (5), inferior appendix (6) and urgent appendix (7), nitrogen blowing mouth (1) connects main appendix (2), on main appendix (2), be provided with major loop nitrogen envelope valve (3), in the below parallel connection of main appendix (2) inferior appendix (6) and urgent appendix (7), on inferior appendix (6), be provided with minor loop nitrogen envelope valve (4), on urgent appendix (7), be provided with pneumatic operated valve (5), the other end of main appendix (2) is connected to the top of storage tank (8), be provided with respectively right fire-retardant breather valve (9) in the crown center position of storage tank (8), left fire-retardant breather valve (10) and breathing manhole (11).
2. the envelope of the nitrogen for large-scale storage tank system multi-layer control device according to claim 1, it is characterized in that described main appendix (2) is different from the pipe diameter that time appendix (6) and urgent appendix (7) adopt, the caliber of main appendix (2) is set to 80mm, and the caliber of inferior appendix (6) and urgent appendix (7) is set to 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520876796.7U CN205240405U (en) | 2015-11-04 | 2015-11-04 | A a nitrogen multilayer level controlling means of system for large -scale storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520876796.7U CN205240405U (en) | 2015-11-04 | 2015-11-04 | A a nitrogen multilayer level controlling means of system for large -scale storage tank |
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| CN205240405U true CN205240405U (en) | 2016-05-18 |
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| CN201520876796.7U Active CN205240405U (en) | 2015-11-04 | 2015-11-04 | A a nitrogen multilayer level controlling means of system for large -scale storage tank |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496833A (en) * | 2018-05-18 | 2019-11-26 | 中石化广州工程有限公司 | A kind of nitrogen envelope internal floating roof tank pipeline scavenging system |
| CN111959973A (en) * | 2020-09-18 | 2020-11-20 | 钟晓山 | Storage tank safe nitrogen sealing nitrogen releasing breathing fire retardant function integration and intelligent management system |
-
2015
- 2015-11-04 CN CN201520876796.7U patent/CN205240405U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496833A (en) * | 2018-05-18 | 2019-11-26 | 中石化广州工程有限公司 | A kind of nitrogen envelope internal floating roof tank pipeline scavenging system |
| CN111959973A (en) * | 2020-09-18 | 2020-11-20 | 钟晓山 | Storage tank safe nitrogen sealing nitrogen releasing breathing fire retardant function integration and intelligent management system |
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