CN208295547U - Large-scale low-temperature liquid oxygen storage tank pressure control device - Google Patents
Large-scale low-temperature liquid oxygen storage tank pressure control device Download PDFInfo
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- CN208295547U CN208295547U CN201820924383.5U CN201820924383U CN208295547U CN 208295547 U CN208295547 U CN 208295547U CN 201820924383 U CN201820924383 U CN 201820924383U CN 208295547 U CN208295547 U CN 208295547U
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- liquid oxygen
- storage tank
- heat exchange
- oxygen storage
- exchange mechanisms
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Abstract
The utility model discloses a kind of large-scale low-temperature liquid oxygen storage tank pressure control devices, including fill of liquid oxygen pipeline and heat exchange mechanisms；The heat exchange mechanisms are set in liquid oxygen storage tank above liquid oxygen, the inlet duct of the heat exchange mechanisms is connect with fill of liquid oxygen pipe outlet, the inlet duct of the outlet conduit and liquid oxygen storage tank connects with the internal cavities of the heat exchange mechanisms, the heat exchange mechanisms is provided with shut-off valve in liquid oxygen storage tank outside.The intelligent control to pressure in liquid oxygen storage tank may be implemented in the utility model, does not need manually to be vented, avoids waste of oxygen, securely and reliably, from reducing cost.The utility model is suitable for pressure control device field.
Description
Technical field
The utility model belongs to pressure control device field, the pressure control device being related in a kind of liquid oxygen storage tank, specifically
It is a kind of large-scale low-temperature liquid oxygen storage tank pressure control device that ground, which is said,.
Background technique
Large-scale low-temperature liquid oxygen storage tank is all atmospheric storage tank at present, and the pressure that storage tank can bear is within 0.02MPa, one
The evaporation rate 0.2% of qualified atmospheric low-temperature liquid oxygen storage tank, needs manually to be vented after pressure reaches design pressure, too late
When emptying will cause danger, emptying will cause the waste of liquid oxygen.Existing more common method is that the oxygen after gasifying carries out
Recycling, which is charged into gas cylinder, to be stored and is used, and is needed to occupy a large amount of gas cylinder, is caused cost recovery very big.
Existing large-scale low-temperature liquid oxygen storage tank fills there are mainly two types of the modes of liquid oxygen: one is set in liquid oxygen storage tank lower part
There is liquid oxygen entrance, is filled in liquid oxygen storage tank by the entrance by liquid oxygen is subcooled, the oxygen and supercooled liquid of the evaporation of liquid oxygen storage tank top
Oxygen contact area is smaller, and this kind fill mode there is still a need for after the design pressure that pressure reaches liquid oxygen storage tank to liquid oxygen storage tank
Manually it is vented；Second is that spray equipment is arranged in liquid oxygen storage tank inner tip, and supercooling liquid oxygen is sprayed into liquid oxygen storage tank,
This kind of mode can make the oxygen that liquid oxygen and evaporation is subcooled come into full contact with heat exchange, and supercooling liquid oxygen absorbs heat, oxygen from oxygen
Heat condensation is released to reduce pressure in liquid oxygen storage tank, although this kind of mode can be effectively reduced pressure in liquid oxygen storage tank, but
It is unable to control contact area and the time of contact of supercooling liquid oxygen and oxygen.
Summary of the invention
To solve drawbacks described above existing in the prior art, the utility model is intended to provide a kind of large-scale low-temperature liquid oxygen storage tank
Pressure control device realizes the intelligent control to pressure in liquid oxygen storage tank to realize that supercooling liquid oxygen and oxygen come into full contact with heat exchange,
Securely and reliably, cost is reduced.
To achieve the above object, used technical solution is as follows for the utility model:
A kind of large-scale low-temperature liquid oxygen storage tank pressure control device, including fill of liquid oxygen pipeline and heat exchange mechanisms；
The heat exchange mechanisms are set in liquid oxygen storage tank above liquid oxygen, the inlet duct and fill of liquid oxygen of the heat exchange mechanisms
Pipe outlet connection, the outlet conduit and liquid oxygen storage tank connects with the internal cavities of the heat exchange mechanisms, the heat exchange mechanisms inlet tube
Road is provided with shut-off valve in liquid oxygen storage tank outside.
As restriction, the inlet duct of the heat exchange mechanisms is provided with the check valve for preventing liquid oxygen adverse current after shut-off valve.
As still another restriction, the heat exchange mechanisms include first entrance pipeline and second entrance pipeline, and described first
Inlet duct fills pipeline with liquefied oxygen tank vehicle and connect, and the second entrance pipeline is connect with space division product fill of liquid oxygen pipeline.
As the third restriction, the heat exchange mechanisms are heat exchanger tube, circulation supercooling liquid oxygen, the heat exchange in the heat exchanger tube
Pipe is outer in being oxygen in liquid oxygen storage tank cavity, and liquid oxygen is subcooled and oxygen exchanges heat through heat exchanger tube.
As further limiting, the heat exchange mechanisms are heat exchanger tube, circulation supercooling liquid oxygen, the heat exchange in the heat exchanger tube
Pipe is outer in being oxygen in liquid oxygen storage tank cavity, and liquid oxygen is subcooled and oxygen exchanges heat through heat exchanger tube.
As a kind of last restriction, throttle valve and measurement heat exchange mechanisms are successively arranged on the outlet conduit of the heat exchange mechanisms
The signal output end of the platinum resistance of interior temperature, the platinum resistance is connect with the temperature signal input of PLC control module, described
The control signal output of PLC control module and the control signal input of throttle valve connect.
As further limiting, it is successively arranged on the outlet conduit of the heat exchange mechanisms in throttle valve and measurement heat exchange mechanisms
The signal output end of the platinum resistance of temperature, the platinum resistance is connect with the temperature signal input of PLC control module, the PLC
Control signal output and the control signal input of throttle valve connect.
The utility model is due to using above-mentioned structure, and compared with prior art, acquired technological progress is:
(1) the liquid oxygen storage tank internal upper part of the utility model is provided with heat exchange mechanisms, the inlet duct and liquid oxygen of heat exchange mechanisms
Pipe outlet connection, the outlet conduit and liquid oxygen storage tank connects with the internal cavities of heat exchange mechanisms are filled, supercooling liquid oxygen passes through heat exchanger
Structure enters liquid oxygen storage tank, and the low temperature supercooling liquid oxygen in heat exchange mechanisms that circulates comes into full contact with the oxygen outside heat exchange mechanisms to be changed
Liquid oxygen heat absorption is subcooled in heat, low temperature, and oxygen to the cold liquefy by heat release, reduces the amount of gas phase oxygen in liquid oxygen storage tank, is filling liquid oxygen
The pressure in liquid oxygen storage tank is reduced simultaneously, heat exchange area is controlled by heat exchange mechanisms and the contact area of oxygen, by being set to
The starting and closing of the shut-off valve control heat exchange mechanisms of heat exchange mechanisms inlet duct, do not need manually to put liquid oxygen storage tank
Sky avoids liquid oxygen waste, reduces cost；
(2) inlet duct of the heat exchange mechanisms of the utility model is connect with fill of liquid oxygen pipe outlet, fill of liquid oxygen pipeline
Pipeline can be filled for liquefied oxygen tank vehicle, or space division product liquid oxygen conveyance conduit, wide adaptability；
(3) it is provided with check valve after the shut-off valve of the utility model, prevents inlet duct adverse current of the liquid oxygen along heat exchange mechanisms
And influence liquid oxygen fill and the control to pressure in liquid oxygen storage tank；
(4) heat exchange mechanisms of the utility model include first entrance pipeline and second entrance pipeline, first entrance pipeline with
Liquefied oxygen tank vehicle fills pipeline connection, and second entrance pipeline is connect with space division product fill of liquid oxygen pipeline, passes through two entrances pipeline
Liquid oxygen is filled into liquid oxygen storage tank simultaneously, is improved efficiency, is reduced cost；
(5) heat exchange mechanisms of the utility model are heat exchanger tube, circulation supercooling liquid oxygen in heat exchanger tube, are oxygen outside heat exchanger tube,
Supercooling liquid oxygen and oxygen exchange heat through heat exchanger tube, and circulate tube side medium in heat exchanger tube, and the gas phase oxygen of liquid oxygen storage tank is shell side
Medium, heat exchanger tube and liquid oxygen storage tank integrally form heat exchanger, and heat exchange efficiency is high, good effect of heat exchange；
(6) it is successively arranged throttle valve on the heat exchange mechanisms outlet conduit of the utility model and measures temperature in heat exchange mechanisms
The signal output end of platinum resistance, platinum resistance is connect with the temperature signal input of PLC control module, the control of PLC control module
The connection of the control signal input of signal output end and throttle valve, platinum resistance are used to detect the temperature in heat exchange mechanisms, throttle valve
For controlling the flow and flow rate of liquid oxygen in heat exchange mechanisms, when platinum resistance detects that the liquid oxygen temperature in heat exchange mechanisms is under boiling point
At 2-3 degrees Celsius, platinum resistance controls the inflow velocity that throttle valve increases liquid oxygen by PLC control module, avoids liquid in heat exchanger
Gasification, by the flow velocity and flow of temperature intelligent control supercooling liquid oxygen in heat exchange mechanisms, simple to operate, control is accurate,
It uses manpower and material resources sparingly, securely and reliably.
To sum up, the intelligent control to pressure in liquid oxygen storage tank may be implemented in the utility model, does not need manually to be vented, avoid
Waste of oxygen is safe and reliable, reduces cost, is suitable for pressure control device field.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.
In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Mark component: 1, liquid oxygen storage tank；2, heat exchange mechanisms；3, first entrance pipeline；4, second entrance pipeline；5, end
Valve；6, check valve；7, the outlet conduit of heat exchange mechanisms；8, throttle valve；9, platinum resistance；10, PLC control module.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model.It should be appreciated that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
Embodiment large-scale low-temperature liquid oxygen storage tank pressure control device
The structure of the present embodiment is as shown in Figure 1, include fill of liquid oxygen pipeline and heat exchange mechanisms 2；
The fill of liquid oxygen pipeline in the present embodiment there are two types of, respectively liquefied oxygen tank vehicle fills pipeline and space division product liquid
Oxygen conveyance conduit, the heat exchange mechanisms 2 are set in liquid oxygen storage tank 1 above liquid oxygen, are provided with stretching liquid in the heat exchange mechanisms 2
The first entrance pipeline 3 and second entrance pipeline 4 of oxygen storage tank 1, the first entrance pipeline 3 fill pipeline company with liquefied oxygen tank vehicle
Logical, the second entrance pipeline 4 is connected to space division product liquid oxygen conveyance conduit, and an inlet duct also can be set and wherein appoint
A kind of connection of fill of liquid oxygen pipeline anticipate as other embodiment, the outlet conduit 7 of the heat exchange mechanisms is in liquid oxygen storage tank 1
And with 1 connects with the internal cavities of liquid oxygen storage tank, heat exchange mechanisms 2 use heat exchanger tube in the present embodiment, from fill of liquid oxygen pipeline to changing
Supercooling liquid oxygen is flowed into heat pipe, is that liquid oxygen evaporates the oxygen to be formed in liquid oxygen storage tank 1 outside heat exchanger tube, liquid oxygen and oxygen is subcooled through changing
Heat pipe exchanges heat, and circulate tube side medium in heat exchanger tube, and the gas phase oxygen of liquid oxygen storage tank is shell side medium, and heat exchanger tube and liquid oxygen store up
The whole composition heat exchanger of tank 1.
5 He of shut-off valve is disposed with along liquid oxygen flow direction on the first entrance pipeline 3 and second entrance pipeline 4
Check valve 6, the shut-off valve 5 are in outside liquid oxygen storage tank 1, control whether to fill by controlling the opening and closing of shut-off valve 5
Liquid oxygen is filled, the check valve 6 is for preventing liquid oxygen from flowing backwards.
It is successively arranged throttle valve 8 on the outlet conduit 7 of the heat exchange mechanisms and measures the platinum resistance of temperature in heat exchange mechanisms 2
9, the signal output end of the platinum resistance 9 is connect with the temperature signal input of PLC control module 10, the PLC control module
10 control signal output is connect with the control signal input of throttle valve 8, and platinum resistance 9 is for detecting liquid in heat exchange mechanisms 2
The temperature of oxygen, throttle valve 8 is used to control the flow of liquid oxygen in heat exchange mechanisms 2, when platinum resistance 9 detects the liquid in heat exchange mechanisms 2
When oxygen temperature is 2-3 degrees Celsius under boiling point, platinum resistance 9 controls the inflow speed that throttle valve 8 increases liquid oxygen by PLC control module 10
Degree, avoids the liquid oxygen gasification in heat exchange mechanisms 2.
The present embodiment use process is as follows:
Open the shut-off valve 5 on first entrance pipeline 3 and second entrance pipeline 4, at this time from liquefied oxygen tank vehicle fill pipeline and
Space division product liquid oxygen conveyance conduit flows into supercooling liquid oxygen into heat exchange mechanisms 2, and liquid oxygen is subcooled in the low temperature to circulate in heat exchange mechanisms 2
It comes into full contact with and exchanges heat with the oxygen outside heat exchange mechanisms 2, liquid oxygen heat absorption is subcooled in low temperature, and oxygen to the cold liquefy by heat release, reduces liquid
The amount of gas phase oxygen in oxygen storage tank 1, to reduce the pressure in liquid oxygen storage tank 1, platinum resistance 9 is for detecting liquid in heat exchange mechanisms 2
The temperature of oxygen, throttle valve 8 is used to control the flow of liquid oxygen in heat exchange mechanisms 2, when platinum resistance 9 detects the liquid in heat exchange mechanisms 2
When oxygen temperature is 2-3 degrees Celsius under boiling point, platinum resistance 9 controls the inflow speed that throttle valve 8 increases liquid oxygen by PLC control module 10
Degree, avoids liquid oxygen gasification in heat exchanger, to realize the control to pressure in large-scale low-temperature liquid oxygen storage tank, does not need manually to put
Sky avoids waste oxygen.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of large-scale low-temperature liquid oxygen storage tank pressure control device, it is characterised in that: it includes fill of liquid oxygen pipeline and heat exchanger
Structure；
The heat exchange mechanisms are set in liquid oxygen storage tank above liquid oxygen, the inlet duct and fill of liquid oxygen pipeline of the heat exchange mechanisms
Outlet connection, the outlet conduit and liquid oxygen storage tank connects with the internal cavities of the heat exchange mechanisms, the inlet duct of the heat exchange mechanisms
It is provided with shut-off valve outside in liquid oxygen storage tank.
2. large-scale low-temperature liquid oxygen storage tank pressure control device according to claim 1, it is characterised in that: the heat exchange mechanisms
Inlet duct the check valve for preventing liquid oxygen adverse current is provided with after shut-off valve.
3. large-scale low-temperature liquid oxygen storage tank pressure control device according to claim 1 or 2, it is characterised in that: the heat exchange
Mechanism includes first entrance pipeline and second entrance pipeline, and the first entrance pipeline fills pipeline with liquefied oxygen tank vehicle and connect, institute
Second entrance pipeline is stated to connect with space division product liquid oxygen conveyance conduit.
4. large-scale low-temperature liquid oxygen storage tank pressure control device according to claim 1 or 2, it is characterised in that: the heat exchange
Mechanism is heat exchanger tube, and the interior circulation supercooling liquid oxygen of the heat exchanger tube, the heat exchanger tube is outer in being oxygen in liquid oxygen storage tank cavity, is subcooled
Liquid oxygen and oxygen exchange heat through heat exchanger tube.
5. large-scale low-temperature liquid oxygen storage tank pressure control device according to claim 3, it is characterised in that: the heat exchange mechanisms
For heat exchanger tube, circulation supercooling liquid oxygen in the heat exchanger tube, the heat exchanger tube is outer in being oxygen in liquid oxygen storage tank cavity, and liquid oxygen is subcooled
It exchanges heat with oxygen through heat exchanger tube.
6. large-scale low-temperature liquid oxygen storage tank pressure control device according to claim 1 or 2, it is characterised in that: the heat exchange
It is successively arranged throttle valve on the outlet conduit of mechanism and measures the platinum resistance of temperature in heat exchange mechanisms, the signal of the platinum resistance is defeated
Outlet is connect with the temperature signal input of PLC control module, the control signal output and throttle valve of the PLC control module
Control signal input connection.
7. large-scale low-temperature liquid oxygen storage tank pressure control device according to claim 3, it is characterised in that: the heat exchange mechanisms
Outlet conduit on be successively arranged throttle valve and measure heat exchange mechanisms in temperature platinum resistance, the signal output end of the platinum resistance
It is connect with the temperature signal input of PLC control module, the control signal output of the PLC control module and the control of throttle valve
Signal input part connection processed.
8. large-scale low-temperature liquid oxygen storage tank pressure control device according to claim 4, it is characterised in that: the heat exchanger tube
Be successively arranged on outlet conduit throttle valve and measure heat exchange mechanisms in temperature platinum resistance, the signal output end of the platinum resistance with
The temperature signal input of PLC control module connects, the control signal output of the PLC control module and the control of throttle valve
Signal input part connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820924383.5U CN208295547U (en) | 2018-06-14 | 2018-06-14 | Large-scale low-temperature liquid oxygen storage tank pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820924383.5U CN208295547U (en) | 2018-06-14 | 2018-06-14 | Large-scale low-temperature liquid oxygen storage tank pressure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208295547U true CN208295547U (en) | 2018-12-28 |
Family
ID=64701486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820924383.5U Expired - Fee Related CN208295547U (en) | 2018-06-14 | 2018-06-14 | Large-scale low-temperature liquid oxygen storage tank pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208295547U (en) |
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2018
- 2018-06-14 CN CN201820924383.5U patent/CN208295547U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181228 Termination date: 20210614 |
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| CF01 | Termination of patent right due to non-payment of annual fee |