CN205938521U - Supply nitrogen system in succession - Google Patents
Supply nitrogen system in succession Download PDFInfo
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- CN205938521U CN205938521U CN201620863971.3U CN201620863971U CN205938521U CN 205938521 U CN205938521 U CN 205938521U CN 201620863971 U CN201620863971 U CN 201620863971U CN 205938521 U CN205938521 U CN 205938521U
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- storage tank
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- pipe
- supply system
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Abstract
The utility model relates to a supply nitrogen system in succession, including liquid nitrogen storage tank, liquid nitrogen storage tank is through the entry of first pipe connection vaporizer, the export of vaporizer is passed through second pipe connection low reaches and is used the gas device, be equipped with the governing valve that is used for the regulated flow on the first pipeline, the governing valve is located the upper reaches of vaporizer, its characterized in that: still be connected with first bypass pipeline on the second pipeline, the entry of the exit linkage emergency storage tank of first bypass pipeline, the export of emergency storage tank is passed through second bypass pipeline and is connected the second pipeline, be equipped with the stop valve on the first bypass pipeline, ooff valve and self -operated regulator has concatenated on the second bypass pipeline. Compared with the prior art, the utility model provides a supply nitrogen system in succession has ensured nitrogen pipe network's pressure stability, safe and reliable, the potential safety hazard of having brought to the downstream process device when having avoided nitrogen gas fluctuation or stop supplies.
Description
Technical field
This utility model is related to a kind of continuous nitrogen supply system.
Background technology
Nitrogen supply (NS) system is that the process unit in whole downstream supplies necessary nitrogen, to guarantee downstream process device peace
Entirely, reliable and stable operation plays vital effect.The hang-up of nitrogen supply (NS) system, it will cut-out downstream at once
The supply of process unit nitrogen, gently then will lead to downstream process device interlock shutdown, cause downstream unit to stop production, cause huge
Economic loss, heavy then the process unit hardware leading to downstream is scrapped, fire explosion, catalyst inactivation and chemical material solidification etc.
Great property and safety problem.
Existing nitrogen system without interruption is directly connected to carburator by liquid nitrogen storage, and liquid nitrogen vaporizes multiple in carburator
Downstream process device is delivered to after heat.Because process unit is higher to nitrogen pressure requirement, in existing system, there is no liquid nitrogen supercharging equipment,
The nitrogen of downstream elevated pressures cannot be supplied；The without interruption of Nitrogen pipe network pressure continuous-stable and nitrogen cannot be ensured, and
And by not detecting with control measure it is impossible to ensure the relative stable of institute's supplying nitrogen temperature.
Content of the invention
Technical problem to be solved in the utility model is that the present situation for prior art provides one kind can smoothly connect
Continue for nitrogen and ensure the constant continuous nitrogen supply system of supplied nitrogen temperature.
This utility model solves the technical scheme that adopted of above-mentioned technical problem：This continuous nitrogen supply system, including liquid nitrogen
Storage tank, described liquid nitrogen storage tank passes through the entrance that the first pipeline connects carburator, and the outlet of described carburator is by second pipe even
Connect downstream device of air；Described first pipeline is provided with the regulating valve for adjusting flow, and described regulating valve is located at described vaporization
The upstream of device；
It is characterized in that：
First bypass duct is also associated with described second pipe, the outlet of described first bypass duct connects emergency storage tank
Entrance, the outlet of described emergency storage tank is passed through the second bypass duct and is connected described second pipe；
Described first bypass duct is provided with stop valve, described second bypass duct is serially connected with switch valve and self-operated type is adjusted
Section valve.
For avoiding fluctuation of operating conditions to nitrogen for impacting, can be also associated with buffering on described second pipe
Tank, described surge tank is located at the upstream of described emergency storage tank.Ensure when downstream process unit gas consumption increases suddenly, can be right in time
Nitrogen pipe network is supplemented it is ensured that Nitrogen pipe network pressure stability.
Force (forcing) pump can also be provided with described first pipeline, described force (forcing) pump is located at the upstream of described regulating valve, is used for
The output pressure of constant liquid nitrogen；The motor of force (forcing) pump preferably employs frequency conversion motor, to ensure the steady regulation of flow.
Preferably, for the delivery temperature of constant nitrogen gas, also heat exchanger can be serially connected with described first pipeline, described
Heat exchanger is located at the downstream of described carburator.
The 3rd bypass duct for emptying and the 4th bypass duct are also associated with described second pipe, by the of the described 3rd
It is respectively equipped with relief valve and relief valve on road pipeline and the 4th bypass duct；To ensure that Nitrogen pipe network will not superpressure；
Described 3rd bypass duct and the 4th bypass duct are positioned at the upstream of described surge tank.
Described heat exchanger preferably employs electric heat exchanger.
Described second pipe is provided with temperature transmitter, pressure transmitter and flow transmitter；
Described heat exchanger, described temperature transmitter, pressure transmitter and flow transmitter and described regulating valve are all connected with
Control system.
Described force (forcing) pump has two, is arranged in parallel on described first pipeline, and is provided with first between two force (forcing) pumps
Switching valve.In this example, liquid nitrogen pump is piston pump, arranges two, the using and the reserved.Described liquid nitrogen pump motor setting converter it is ensured that
The steady regulation of flow.Motor connection Emergent diesel generator it is ensured that under the loss of power accident, liquid nitrogen pump energy normal work, nitrogen is even
Continuous supply.Two liquid nitrogen pumps are to be arranged in parallel.
Liquid nitrogen pump can take various forms, such as reciprocating or centrifugal.
Described carburator can have two, parallel with one another is arranged on described first pipeline；Between two described carburator
It is provided with the second switching valve.Two carburator can be used alternatingly, to facilitate maintenance.
Carburator preferably employs air vaporizer.Air vaporizer does not need to consume electricity and steam, energy-saving effect
Really good, and have a power failure suddenly, stop steam in the case of still ensure that the without interruption of nitrogen.
Preferably, check-valves and second pressure table can also be provided with described second pipe, described check-valves are located at institute
State between emergency storage tank and described surge tank, second pressure epi-position is in the downstream of described emergency storage tank；Described second pressure table connects control
System processed.Second pressure table is set in emergency storage tank downstream, can select to start emergency storage tank according to the detection of second pressure table；And
Because check-valves upstream pressure is low, this check-valves can be when emergency storage tank enables it is ensured that nitrogen can supply downstream process dress in time
Put, without reversely floing back towards upstream.
Compared with prior art, continuous nitrogen supply system provided by the utility model has ensured that the pressure of Nitrogen pipe network is steady
Fixed, safe and reliable, it is to avoid nitrogen fluctuation or stop the potential safety hazard at once bringing to downstream process device.
Brief description
Fig. 1 is this utility model embodiment schematic diagram.
Specific embodiment
Below in conjunction with accompanying drawing embodiment, this utility model is described in further detail.
As shown in figure 1, this continuous nitrogen supply system includes：
Liquid nitrogen storage tank 1, for storing liquid nitrogen；Liquid nitrogen in hydraulic reservoir can be with regular replenishment it is also possible to press certain flow
Continuous supplementation.Liquid nitrogen storage also can adopt flat storage tank using vacuum storage tank.
Force (forcing) pump 7, is arranged on the first pipeline 21, the liquid nitrogen for sending to liquid nitrogen storage tank 1 pressurizes, to reach use
Pressure set by nitrogen system.Force (forcing) pump 7 in the present embodiment has two, parallel with one another on the first pipeline 21, between the two
It is provided with the first switching valve 24, by the first switching valve 24 come the force (forcing) pump 7 of switch operating.
Regulating valve 51, for adjusting the flow of liquid nitrogen in the first pipeline 21.Regulating valve 51 is located at the downstream of force (forcing) pump 7, and
Connection control system (not shown).When downstream process unit nitrogen use level decreases or increases, control system controls this tune
Section valve events are it is ensured that Nitrogen pipe network pressure stability.
Carburator 2, for vaporized liquid nitrogen, the carburator in the present embodiment adopts air vaporizer, air vaporizer
Do not need to consume electricity and steam, energy conservation and consumption reduction effects are good, and have a power failure suddenly, stop steam in the case of still ensure that the company of nitrogen
Continuous supply；Two air vaporizers are arranged in parallel in the downstream of regulating valve 51, two carburator pipelines are equipped with second and cut
Change valve 25, to facilitate two carburator 2 to be used alternatingly.
Heat exchanger 8, is serially connected on the first pipeline 21, positioned at the downstream of carburator 2, in the present embodiment, heat exchanger 8 changes for electricity
Hot device, heat exchanger 8 connection control system, its work is controlled by control system.
The outlet of heat exchanger 8 connects second pipe 22.
Temperature transmitter 54, pressure transmitter 55 and flow transmitter 56 are arranged on second pipe 22, positioned at heat exchanger 8
Downstream；Temperature transmitter 54, pressure transmitter 55 and flow transmitter 56 are all connected with control system, for by detect
In two pipelines, nitrogen parameter is transmitted to control system immediately.
On second pipe 22, the downstream in above-mentioned each transmitter is also associated with the 3rd bypass duct 33 for emptying and the
Four bypass ducts 34, the 3rd bypass duct 33 and the 4th bypass duct 34 are respectively equipped with relief valve 57 and relief valve 58.
Surge tank 6, is serially connected on second pipe 22, positioned at the downstream of the 4th bypass duct 34.
Emergency storage tank 4, is connected in parallel on second pipe 22 by the first bypass duct 31 and the second bypass duct 32, positioned at buffering
The downstream of tank 6, the wherein first bypass duct 31 is connected between second pipe 22 and the entrance of emergency storage tank 4, the first bypass duct
Also it is serially connected with two stop valves 59 and first pressure table 35 on 31；Second bypass duct 32 is connected to the outlet and of emergency storage tank 4
Between two pipelines 22, it is serially connected with switch valve 52 and direct-operated regulator 53 thereon.
Two stop valves 59, second pressure table 26, switch valve 52 and direct-operated regulator 53 are all connected with control system, by controlling
System processed controls their startup or closing.
Check-valves 23 and second pressure table 26, are connected on second pipe 22；Wherein check-valves 23 are arranged on emergency storage tank 4 He
Between surge tank 6, pressure gauge is arranged on the downstream of the end of second pipe, emergency storage tank.In emergency storage tank downstream, second pressure is set
Table, can be according to the detection data selective actuation emergency storage tank of second pressure table；And check-valves can when emergency storage tank enables, by
In check-valves upstream pressure low it is ensured that nitrogen can supply downstream process device in time, without reversely floing back towards upstream.
The liquid nitrogen sent from liquid nitrogen storage, enters air vaporizer vaporization after force (forcing) pump is forced into setting pressure,
Subsequently into heat exchanger heat exchange to design temperature, to the nitrogen of device (not shown) parameter stability without interruption.
During nitrogen, according to the monitoring of temperature transmitter, pressure transmitter and flow transmitter, control system is controlled automatically
The work of regulating valve processed and electric heat exchanger and self-operated type relief valve and relief valve is it is ensured that the operation of nitrogen supply system continuous-stable.
When device is driven, two stop valves are opened, and self-supporting regulation valve and switch valve are closed, and carry out pressurising to emergency storage tank.
By observing pressure gauge on the spot, after pressure reaches design load, close two stop valves.
When an accident occurs, liquid nitrogen pump can not start, and now by the pressure transmitter of setting on outlet conduit, works as pressure
Low to certain numerical value when, accident nitrogen system automatic.Ensure downstream process device energy emergency.
Claims (10)
1. a kind of continuous nitrogen supply system, including liquid nitrogen storage tank (1), described liquid nitrogen storage tank (1) connects vapour by the first pipeline (21)
Change the entrance of device (2), the outlet of described carburator (2) connects downstream device of air by second pipe (22)；Described first pipe
Road (21) is provided with the regulating valve (51) for adjusting flow, and described regulating valve (51) is located at the upstream of described carburator (2)；
It is characterized in that：
First bypass duct (31) is also associated with described second pipe (22), the outlet of described first bypass duct (31) connects
The entrance of emergency storage tank (4), the outlet of described emergency storage tank (4) connects described second pipe (22) by the second bypass duct (32)；
Described first bypass duct (31) is provided with stop valve (59) and first pressure table (35), described second bypass duct (32)
On be serially connected with switch valve (52) and direct-operated regulator (53).
2. continuous nitrogen supply system according to claim 1 is it is characterised in that be also associated with delaying on described second pipe (22)
Rush tank (6), described surge tank (6) is located at the upstream of described emergency storage tank (4).
3. continuous nitrogen supply system according to claim 1 and 2 is it is characterised in that described first pipeline (21) is provided with pressurization
Pump (7), described force (forcing) pump (7) is located at the upstream of described regulating valve (51).
4. continuous nitrogen supply system according to claim 3 changes it is characterised in that being also serially connected with described first pipeline (21)
Hot device (8), described heat exchanger (8) is located at the downstream of described carburator (2).
5. continuous nitrogen supply system according to claim 4 is it is characterised in that be also associated with described second pipe (22) using
The 3rd bypass duct (33) and the 4th bypass duct (34), described 3rd bypass duct (33) and the 4th bypass duct in emptying
(34) it is respectively equipped with relief valve (57) and relief valve (58) on；
Described 3rd bypass duct (33) and the 4th bypass duct (34) are positioned at the upstream of described surge tank (6).
6. continuous nitrogen supply system according to claim 5 is it is characterised in that described heat exchanger (8) is electric heat exchanger.
7. continuous nitrogen supply system according to claim 6 is it is characterised in that described second pipe (22) is provided with temperature change
Send device (54), pressure transmitter (55) and flow transmitter (56)；
Described heat exchanger (8), described temperature transmitter (54), pressure transmitter (55) and flow transmitter (56) and described tune
Section valve (51) is all connected with control system.
8. continuous nitrogen supply system according to claim 7, it is characterised in that described force (forcing) pump (7) has two, is arranged in parallel
On described first pipeline (21), and it is provided with the first switching valve (24) between two force (forcing) pumps (7).
9. continuous nitrogen supply system according to claim 8 is it is characterised in that described carburator (2) has two, parallel with one another
It is arranged on described first pipeline (21)；It is provided with the second switching valve (25) between two described carburator (2).
10. continuous nitrogen supply system according to claim 8 is it is characterised in that described second pipe (22) is provided with check-valves
(23) and second pressure table (26), described check-valves (23) are located between described emergency storage tank (4) and described surge tank (6), and second
Pressure gauge (26) is located at the downstream of described emergency storage tank (4)；Described second pressure table (26) connection control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620863971.3U CN205938521U (en) | 2016-08-09 | 2016-08-09 | Supply nitrogen system in succession |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620863971.3U CN205938521U (en) | 2016-08-09 | 2016-08-09 | Supply nitrogen system in succession |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205938521U true CN205938521U (en) | 2017-02-08 |
Family
ID=57923507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620863971.3U Active CN205938521U (en) | 2016-08-09 | 2016-08-09 | Supply nitrogen system in succession |
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| CN (1) | CN205938521U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107320882A (en) * | 2017-08-30 | 2017-11-07 | 天津神封科技发展有限公司 | A kind of automatic emergency of intelligentized control method supplies nitrogen device |
| CN107477362A (en) * | 2017-07-06 | 2017-12-15 | 上海卫星装备研究所 | Large space environmental simulation system external liquid nitrogen storage tank multiple spot regulator and method |
| CN108916647A (en) * | 2018-06-25 | 2018-11-30 | 杭州新亚低温科技有限公司 | A kind of cryogenic liquid is converted into the carburetion system of high pressure gas |
| CN112815232A (en) * | 2020-12-30 | 2021-05-18 | 大连理工大学 | Liquid nitrogen online preparation and online switching type regulation and control system |
| CN113970069A (en) * | 2021-10-20 | 2022-01-25 | 北京京诚泽宇能源环保工程技术有限公司 | Cold rolling workshop nitrogen gas temporary feeding device |
| CN115405854A (en) * | 2022-08-25 | 2022-11-29 | 深圳中广核工程设计有限公司 | Pressure control system and method for liquid nitrogen storage tank and nitrogen distribution pipeline |
| CN115514085A (en) * | 2022-11-04 | 2022-12-23 | 石横特钢集团有限公司 | Liquid nitrogen gasification guarantee system under emergency state |
-
2016
- 2016-08-09 CN CN201620863971.3U patent/CN205938521U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477362A (en) * | 2017-07-06 | 2017-12-15 | 上海卫星装备研究所 | Large space environmental simulation system external liquid nitrogen storage tank multiple spot regulator and method |
| CN107320882A (en) * | 2017-08-30 | 2017-11-07 | 天津神封科技发展有限公司 | A kind of automatic emergency of intelligentized control method supplies nitrogen device |
| CN108916647A (en) * | 2018-06-25 | 2018-11-30 | 杭州新亚低温科技有限公司 | A kind of cryogenic liquid is converted into the carburetion system of high pressure gas |
| CN112815232A (en) * | 2020-12-30 | 2021-05-18 | 大连理工大学 | Liquid nitrogen online preparation and online switching type regulation and control system |
| CN112815232B (en) * | 2020-12-30 | 2022-05-13 | 大连理工大学 | Liquid nitrogen online preparation and online switching type regulation and control system |
| CN113970069A (en) * | 2021-10-20 | 2022-01-25 | 北京京诚泽宇能源环保工程技术有限公司 | Cold rolling workshop nitrogen gas temporary feeding device |
| CN115405854A (en) * | 2022-08-25 | 2022-11-29 | 深圳中广核工程设计有限公司 | Pressure control system and method for liquid nitrogen storage tank and nitrogen distribution pipeline |
| CN115514085A (en) * | 2022-11-04 | 2022-12-23 | 石横特钢集团有限公司 | Liquid nitrogen gasification guarantee system under emergency state |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |