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CN110805829B - A nitrogen supply device - Google Patents

A nitrogen supply device Download PDF

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Publication number
CN110805829B
CN110805829B CN201911260254.6A CN201911260254A CN110805829B CN 110805829 B CN110805829 B CN 110805829B CN 201911260254 A CN201911260254 A CN 201911260254A CN 110805829 B CN110805829 B CN 110805829B
Authority
CN
China
Prior art keywords
gas supply
pipeline structure
power source
supply device
control cabinet
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.)
Active
Application number
CN201911260254.6A
Other languages
Chinese (zh)
Other versions
CN110805829A (en
Inventor
周军
毛振华
李红莲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubei Heyuan Gases Co ltd
Original Assignee
Hubei Heyuan Gases Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to CN201911260254.6A priority Critical patent/CN110805829B/en
Publication of CN110805829A publication Critical patent/CN110805829A/en
Application granted granted Critical
Publication of CN110805829B publication Critical patent/CN110805829B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/0126—One vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0338—Pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/014—Nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/013—Single phase liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/039—Localisation of heat exchange separate on the pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/02—Improving properties related to fluid or fluid transfer
    • F17C2260/022—Avoiding overfilling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/03—Treating the boil-off
    • F17C2265/032—Treating the boil-off by recovery
    • F17C2265/036—Treating the boil-off by recovery with heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention provides a nitrogen gas supply device which comprises a liquid storage tank, a first gas supply pipeline structure, a second gas supply pipeline structure, a first electromagnetic valve, a first detector, a control cabinet and a first discharge pipeline structure, wherein the first gas supply pipeline structure is connected with the liquid storage tank and comprises a power source, a second electromagnetic valve and a first gasifier, the second gas supply pipeline structure is connected with the first gas supply pipeline structure and comprises a second gasifier connected with the power source, the first electromagnetic valve is connected between the liquid storage tank and the power source and is electrically connected with the control cabinet, the second electromagnetic valve is connected between the power source and the second gasifier and is electrically connected with the control cabinet, the first gasifier is connected with the power source and is used for being connected with a gas utilization device, the first detector is connected with the first gas supply pipeline structure and is electrically connected with the control cabinet and is used for detecting the gas pressure in the first gas supply pipeline structure, and the first discharge pipeline structure is connected with the first gas supply pipeline structure.

Description

Nitrogen supply device
[ Field of technology ]
The invention relates to the technical field of gas supply, in particular to a nitrogen supply device.
[ Background Art ]
The existing nitrogen gas supply device has to be provided with two variable-frequency low-temperature liquid pumps (one for one), so that investment budget is increased, when the used variable-frequency low-temperature liquid pumps fail, the standby variable-frequency low-temperature liquid pumps cannot be automatically put into operation, and if the variable-frequency low-temperature liquid pumps frequently have excessive nitrogen gas, cavitation faults (the pumps are idling, but the pumps do not do work) of the pumps cannot be automatically removed, and manual operation is also needed.
In view of the above, it is desirable to provide a new nitrogen supply device that overcomes the above-described drawbacks.
[ Invention ]
The invention aims to provide a nitrogen supply device, which reduces the use cost, can discharge nitrogen without manual operation, can automatically relieve the failure of a power source without acting, and reduces the investment cost.
In order to achieve the above object, the present invention provides a nitrogen gas supply device 100, comprising a liquid storage tank 1, a first gas supply pipeline structure 2, a second gas supply pipeline structure 3, a first electromagnetic valve 4, a first detector 5, a control cabinet 6 and a first discharge pipeline structure 7, wherein the first gas supply pipeline structure 2 is connected with the liquid storage tank 1 and comprises a power source 21, a second electromagnetic valve 22 and a first gasifier 23, the second gas supply pipeline structure 3 is connected with the first gas supply pipeline structure 2 and comprises a second gasifier 31 connected with the power source 21, the first electromagnetic valve 4 is connected between the liquid storage tank 1 and the power source 21 and is electrically connected with the control cabinet 6, the second electromagnetic valve 22 is connected between the power source 21 and the second gasifier 31 and is electrically connected with the control cabinet 6, the first gasifier 23 is connected with the power source 21 and is used for being connected with a gas utilization device 200, the second gasifier 31 is used for being connected with the gas utilization device 200, the first gas supply pipeline structure 2 is higher than the second gas supply pipeline structure 21 and is used for being electrically connected with the first discharge pipeline structure 6, and the first gas supply pipeline structure 2 is electrically connected with the first gas supply pipeline structure 7.
In a preferred embodiment, the nitrogen gas supply apparatus 100 further includes a first delivery pipe 300, and the second solenoid valve 22, the power source 21, and the first vaporizer 23 are connected in series to the first delivery pipe 300.
In a preferred embodiment, the nitrogen gas supply apparatus 100 further includes a second transfer pipe 400, the second gasifier 31 is connected to the second transfer pipe 400 in series, and one end of the first transfer pipe 300 is connected to the second transfer pipe 400.
In a preferred embodiment, the nitrogen supply device 100 further comprises a first pressure reducer 8, and the first pressure reducer 8 is connected in series to the first conveying pipe 300.
In a preferred embodiment, the nitrogen supply device 100 further comprises a second pressure reducer 9, and the second pressure reducer 9 is connected in series to the second conveying pipe 400.
In a preferred embodiment, the nitrogen gas supply device 100 further includes two flow meters 10, wherein one flow meter 10 is connected in series to the first conveying pipe 300 and electrically connected to the control cabinet 6, and the other flow meter 10 is connected in series to the second conveying pipe 400 and electrically connected to the control cabinet 6.
In a preferred embodiment, the nitrogen gas supply apparatus 100 further includes a pipe 500, and the first solenoid valve 4 is connected between the liquid storage tank 1 and the power source 21 through the pipe 500.
In a preferred embodiment, the nitrogen gas supply device 100 further includes two second detectors 11, wherein one second detector 11 is connected in series to the first conveying pipeline 300, the other second detector 11 is connected to the pipeline 500 and located between the liquid storage tank 1 and the power source 21, and both the two second detectors 11 are electrically connected to the control cabinet 6.
In a preferred embodiment, the first exhaust pipeline structure 7 includes a first exhaust pipeline 71 and a third solenoid valve 72 connected to the first exhaust pipeline 71, the third solenoid valve 72 is electrically connected to the control cabinet 6, and the first exhaust pipeline 71 is connected to the first air supply pipeline structure 2 through the third solenoid valve 72.
In a preferred embodiment, the nitrogen gas supply device 100 further comprises a second discharge line structure 600, the second discharge line structure 600 comprising a second discharge line 601 and a plurality of valves 602 connected to the second discharge line 601, the second discharge line 601 being connected to the second gas supply line structure 3 through the plurality of valves 602.
Compared with the prior art, the nitrogen supply device has the beneficial effects that only one power source is arranged, so that the investment cost is reduced, and the nitrogen supply device is also provided with the first discharge pipeline structure which is connected with the first gas supply pipeline structure, so that nitrogen can be discharged through the first discharge pipeline structure, and the fault that the power source does not do work can be automatically relieved without manual operation.
[ Description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a nitrogen supply device provided by the invention.
[ Detailed description ] of the invention
In order to make the objects, technical solutions and advantageous technical effects of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and detailed description. It should be understood that the detailed description is intended to illustrate the invention, and not to limit the invention.
It is to be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediate medium, or in communication between two elements or in an interaction relationship between two elements. It will be apparent to those skilled in the art that the terms described above have the particular meaning in the present invention, as the case may be.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or the like, may include one or more such features, either explicitly or implicitly. Furthermore, the meaning of "a plurality of", "a number" means two or more, unless specifically defined otherwise.
Referring to fig. 1, the present invention provides a nitrogen gas supply device 100, which comprises a liquid storage tank 1, a first gas supply pipeline structure 2, a second gas supply pipeline structure 3, a first electromagnetic valve 4, a first detector 5, a control cabinet 6 and a first discharge pipeline structure 7, wherein the first gas supply pipeline structure 2 is connected with the liquid storage tank 1 and comprises a power source 21, a second electromagnetic valve 22 and a first vaporizer 23, the second gas supply pipeline structure 3 is connected with the first gas supply pipeline structure 2 and comprises a second vaporizer 31 connected with the power source 21, the first electromagnetic valve 4 is connected between the liquid storage tank 1 and the power source 21 and is electrically connected with the control cabinet 6, the second electromagnetic valve 22 is connected between the power source 21 and the second vaporizer 31 and is electrically connected with the control cabinet 6, the first vaporizer 23 is connected with the power source 21 and is used for being connected with a gas utilization device 200, the second vaporizer 31 is used for being connected with the gas utilization device 200, the liquid storage tank 1 accommodates a second vaporizer 31 connected with the power source 21, the first electromagnetic valve 4 is connected with the power source 21 and is used for being electrically connected with the control cabinet 6, the first vaporizer 2 is used for being electrically connected with the first discharge pipeline structure 6, and is used for being electrically connected with the first gas supply pipeline structure 2, and is used for being discharged, and is electrically connected with the first gas supply pipeline structure 6.
In this embodiment, the power source 21 is a low-temperature liquid pump, the first vaporizer 23 and the second vaporizer 31 are used for heating liquid nitrogen, the number of the second vaporizers 31 is two, the first detector 5 is a pressure sensor, and the control cabinet 6 is a variable-frequency control cabinet and is used for receiving signals of the first detector 5 and sending control signals to the first electromagnetic valve 4 and the second electromagnetic valve 22.
When part of the liquid nitrogen in the liquid storage tank 1 flows to the power source 21 through the second electromagnetic valve 22, the power source 21 starts to convey the liquid nitrogen into the first gasifier 23, the first gasifier 23 heats the liquid nitrogen and provides the liquid nitrogen for an air utilization device, and the first detector 5 detects the air pressure in the first air supply pipeline structure 2;
When the first air supply pipeline structure 2 starts to supply air and the first air supply pipeline structure 2 stops to supply air after a long time, the control cabinet transmits signals to the second electromagnetic valve 22 and the first electromagnetic valve 4 to enable the second electromagnetic valve 22 and the first electromagnetic valve 4 to be opened, after the power source 21 is precooled for a few seconds by liquid nitrogen through the power source 21, the first electromagnetic valve 4 is closed, and then the air supply is started;
If the first detector 5 detects that the air pressure at the first detector 5 is equal to the preset air pressure value of the control cabinet 6 (normal air supply), the first electromagnetic valve 4 is in a closed state, and the first air supply pipeline structure 2 normally supplies liquid nitrogen to the air utilization device 200;
If the first detector 5 detects that the air pressure at the first detector 5 is lower than the preset air pressure value of the control cabinet 6, at this time, the first electromagnetic valve 4 is precooled, the control cabinet 6 sends a signal to the first electromagnetic valve 4 to open the first electromagnetic valve 4, and the control cabinet 6 sends a signal to increase the rotation speed of the power source 21 to increase the pressure, so that the air utilization device 200 is supplied with liquid nitrogen;
If the first detector 5 detects that the air pressure at the first detector 5 is higher than the preset air pressure value of the control cabinet 6, the control cabinet 6 sends a signal to enable the power source 21 to reduce the rotation speed or enable the power source 21 to stop operating so as to increase the pressure, thereby realizing the purpose of providing the air utilization device 200 with liquid nitrogen;
While part of the liquid nitrogen in the liquid storage tank 1 flows into the second vaporizer 31, and the second vaporizer 31 heats the liquid nitrogen and supplies the liquid nitrogen to the gas utilization device 400. By using a cryogenic liquid pump, investment costs are reduced.
In one embodiment, the nitrogen gas supply device 100 further includes a first delivery pipe 300, and the second electromagnetic valve 22, the power source 21, and the first vaporizer 23 are sequentially connected in series to the first delivery pipe 300.
In one embodiment, the nitrogen gas supply apparatus 100 further includes a second transfer pipe 400, the second gasifier 31 is connected to the second transfer pipe 400 in series, and one end of the first transfer pipe 300 is connected to the second transfer pipe 400.
In one embodiment, the nitrogen gas supply device 100 further includes a pipe 500, and the first electromagnetic valve 4 is connected between the liquid storage tank 1 and the power source 21 through the pipe 500.
In one embodiment, the first exhaust pipeline structure 7 includes a first exhaust pipeline 71 and a third electromagnetic valve 72 connected to the first exhaust pipeline 71, the third electromagnetic valve 72 is electrically connected to the control cabinet 6, and the first exhaust pipeline 71 is connected to the first air supply pipeline structure 2 through the third electromagnetic valve 72. If the power source 21 is operated, the first detector 5 detects that the air pressure value in the first air supply pipeline structure 2 is not changed (indicating that cavitation fault occurs, the pump is idling, but the pump does not work), the third electromagnetic valve 72 is closed after being opened for a few seconds, the first discharge pipeline 71 discharges nitrogen gas to make the power source 21 work, at this time, the cavitation fault is automatically relieved, the power source 21 works normally, and if the power source 21 is operated, the first detector 5 detects that the air pressure value in the first air supply pipeline structure 2 is changed, the third electromagnetic valve 72 is closed.
In one embodiment, the nitrogen gas supply apparatus 100 further includes a second discharge line structure 600, the second discharge line structure 600 including a second discharge line 601 and a plurality of valves 602 connected to the second discharge line 601, the second discharge line 601 being connected to the second line structure 3 through the plurality of valves 602. By opening the valve 602, the second discharge line 601 can discharge nitrogen.
In one embodiment, the nitrogen gas supply apparatus 100 further includes a first pressure reducer 8, and the first pressure reducer 8 is connected in series to the first delivery pipe 300 and is used to reduce the air pressure in the first delivery pipe 300.
In one embodiment, the nitrogen gas supply apparatus 100 further includes a second pressure reducer 9, and the second pressure reducer 9 is connected in series to the second delivery pipe 400 and is used to reduce the gas pressure in the second delivery pipe 400.
In one embodiment, the nitrogen gas supply device 100 further includes two flow meters 10, wherein one flow meter 10 is connected in series to the first conveying pipeline 300 and electrically connected to the control cabinet 6, and the other flow meter 10 is connected in series to the second conveying pipeline 400 and electrically connected to the control cabinet 6.
In one embodiment, the nitrogen gas supply device 100 further includes two second detectors 11, wherein one second detector 11 is connected in series to the first conveying pipeline 300, the other second detector 11 is connected to the pipeline 500 and located between the liquid storage tank 1 and the power source 21, and the two second detectors 11 are electrically connected to the control cabinet 6. In this embodiment, the two second detectors 11 are both temperature sensors.
The present invention is not limited to the details and embodiments described herein, and thus additional advantages and modifications may readily be made by those skilled in the art, without departing from the spirit and scope of the general concepts defined in the claims and the equivalents thereof, and the invention is not limited to the specific details, representative apparatus and illustrative examples shown and described herein.

Claims (8)

1. The nitrogen gas supply device (100) is characterized by comprising a liquid storage tank (1), a first gas supply pipeline structure (2), a second gas supply pipeline structure (3), a first electromagnetic valve (4), a first detector (5), a control cabinet (6) and a first discharge pipeline structure (7), wherein the first gas supply pipeline structure (2) is connected with the liquid storage tank (1) and comprises a power source (21), a second electromagnetic valve (22) and a first gasifier (23), the second gas supply pipeline structure (3) is connected with the first gas supply pipeline structure (2) and comprises a second gasifier (31) connected with the power source (21), the first electromagnetic valve (4) is connected between the liquid storage tank (1) and the power source (21) and is electrically connected with the control cabinet (6), the second electromagnetic valve (22) is connected between the power source (21) and the second gasifier (31) and is electrically connected with the control cabinet (6), the first gasifier (23) is connected with the power source (21) and comprises a second gasifier (31) connected with the first gasifier (200) for connecting with the first gasifier (2) through the gas supply pipeline structure, the power source (21) is electrically connected with the control cabinet (6), the first detector (5) is connected with the first air supply pipeline structure (2) and is electrically connected with the control cabinet (6) and used for detecting air pressure in the first air supply pipeline structure (2), and the first discharge pipeline structure (7) is connected with the first air supply pipeline structure (2);
the nitrogen gas supply device (100) further comprises a first conveying pipeline (300), and the second electromagnetic valve (22), the power source (21) and the first gasifier (23) are connected in series on the first conveying pipeline (300);
The nitrogen gas supply device (100) further comprises a second discharge pipeline structure (600), the second discharge pipeline structure (600) comprises a second discharge pipeline (601) and a plurality of valves (602) connected with the second discharge pipeline (601), and the second discharge pipeline (601) is connected with the second gas supply pipeline structure (3) through the plurality of valves (602).
2. The nitrogen gas supply device (100) according to claim 1, wherein the nitrogen gas supply device (100) further comprises a second conveying pipeline (400), the second gasifier (31) is connected in series to the second conveying pipeline (400), and one end of the first conveying pipeline (300) is connected with the second conveying pipeline (400).
3. The nitrogen gas supply device (100) according to claim 1, wherein the nitrogen gas supply device (100) further comprises a first pressure reducer (8), the first pressure reducer (8) being connected in series to the first delivery conduit (300).
4. The nitrogen supply device (100) according to claim 2, wherein the nitrogen supply device (100) further comprises a second pressure reducer (9), the second pressure reducer (9) being connected in series to the second delivery conduit (400).
5. The nitrogen gas supply device (100) according to claim 2, wherein the nitrogen gas supply device (100) further comprises two flow meters (10), one flow meter (10) is connected in series to the first conveying pipeline (300) and is electrically connected to the control cabinet (6), and the other flow meter (10) is connected in series to the second conveying pipeline (400) and is electrically connected to the control cabinet (6).
6. The nitrogen gas supply device (100) according to claim 5, wherein the nitrogen gas supply device (100) further comprises a pipe (500), and the first solenoid valve (4) is connected between the liquid storage tank (1) and the power source (21) through the pipe (500).
7. The nitrogen gas supply device (100) according to claim 6, wherein the nitrogen gas supply device (100) further comprises two second detectors (11), one of the second detectors (11) is connected in series to the first conveying pipeline (300), the other second detector (11) is connected to the pipeline (500) and is located between the liquid storage tank (1) and the power source (21), and the two second detectors (11) are electrically connected with the control cabinet (6).
8. The nitrogen gas supply device (100) according to claim 1, wherein the first discharge line structure (7) comprises a first discharge line (71) and a third solenoid valve (72) connected to the first discharge line (71), the third solenoid valve (72) being electrically connected to the control cabinet (6), the first discharge line (71) being connected to the first gas supply line structure (2) via the third solenoid valve (72).
CN201911260254.6A 2019-12-10 2019-12-10 A nitrogen supply device Active CN110805829B (en)

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CN203322735U (en) * 2013-07-11 2013-12-04 哈尔滨黎明气体有限公司 Air separation continuous nitrogen supplying guaranteeing device
KR20180073014A (en) * 2016-12-22 2018-07-02 주식회사 포스코 Gas supplying apparatus
CN208587730U (en) * 2018-03-27 2019-03-08 上海浦江特种气体有限公司 A kind of high pressure nitrogen feeder
CN209084398U (en) * 2018-10-19 2019-07-09 浙江海天气体有限公司 The device of high pure nitrogen is recycled in a kind of liquid nitrogen tank
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