CN202674833U - Low-temperature liquid evaporating and transporting device - Google Patents
Low-temperature liquid evaporating and transporting device Download PDFInfo
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- CN202674833U CN202674833U CN 201220252030 CN201220252030U CN202674833U CN 202674833 U CN202674833 U CN 202674833U CN 201220252030 CN201220252030 CN 201220252030 CN 201220252030 U CN201220252030 U CN 201220252030U CN 202674833 U CN202674833 U CN 202674833U
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Abstract
The utility model provides a low-temperature liquid evaporating and transporting device which comprises a low-pressure liquid storage tank, a low-temperature liquid pump, multiple intermediate-pressure liquid storage tanks, an empty bath type evaporator, a water bath type evaporator and a low-temperature variable-frequency liquid pump. The low-pressure liquid storage tank is used for storing low-pressure liquid, the low-temperature liquid pump is communicated with the low-pressure liquid storage tank and used for pressurizing the low-pressure liquid transported from the low-pressure liquid storage tank, the multiple intermediate-pressure liquid storage tanks are respectively communicated with the low-temperature liquid pump and used for storing liquid transported by the low-temperature liquid pump, the empty bath type evaporator is communicated with the multiple intermediate-pressure liquid storage tanks and used for pressurizing liquid in the multiple intermediate-pressure liquid storage tanks, the water bath type evaporator is communicated with the multiple intermediate-pressure liquid storage tanks and performs heat exchange with high-pressure liquid after pressurized by the empty bath type evaporator to form gas to be transported to a gas pipeline network, the low-temperature variable-frequency liquid pump is communicated with the low-pressure liquid storage tank, and the low-temperature liquid returns to the low-pressure liquid storage tank through a post pumping reflux pipeline due to gases formed by natural evaporation when passing through the low-temperature variable-frequency liquid pump.
Description
Technical field
The utility model relates to large-scale air piece-rate system field, relates in particular to a kind of cryogenic liquide evaporation feedway.
Background technique
Along with metallurgy industry improving constantly oxygen nitrogen demand, because the characteristics of metallurgy industry production technology, there is discontinuity in the gas demand, cause the ductwork pressure fluctuation larger, simultaneously because the yielding capacity of air-separating plant steady and continuous comparatively, therefore how to process this contradiction, the upgrading of cryogenic liquide evaporation feedway just becomes the favourable operation that solves this contradiction, also more and more is subject to people's attention.
Cryogenic liquide evaporation feedway is when work, and also there are the characteristics of discontinuity air feed simultaneously in the loss of refrigeration capacity in the time of can causing precooling in the liquid course of conveying, can not solve preferably steel-making, smelt iron demand to the oxygen nitrogen, and normal production is brought impact.
Fig. 1 is the schematic diagram according to the structure of the cryogenic liquide evaporation feedway of prior art.
With reference to Fig. 1, label 1 expression low pressure liquid storage tank, label 2 expression cryogenic liquid pumps, press liquid storage tank in label 3 expressions, the empty bath formula vaporizer of label 4 expressions, label 5 expression water-bath type vaporizers, label 10,11 expressions are positioned at the cryogenic globe valve of hydraulic fluid side, and label 12,13 expressions are positioned at the cryogenic globe valve of gas side.
As shown in Figure 1, liquid in this cryogenic liquide evaporation feedway is sent into middle press liquid storage tank 3 after being pressurizeed by cryogenic liquid pump 2, then stop the operation of cryogenic liquid pump 2, after 4 pressurizations of sky bath formula vaporizer, in the middle of pressure in the press liquid storage tank 3 when being higher than ductwork pressure, liquid by with 5 heat exchange of water-bath type vaporizer after send in the pipe network.In the middle of liquid in the press liquid storage tank 3 carry when complete, start cryogenic liquid pump 2 to middle press liquid storage tank 3 internal-filling liquids, then carry out next circulation.
Yet there is following shortcoming in above-mentioned cryogenic liquide evaporation feedway of the prior art: need discharge large quantity of fluid during from cryogenic liquid pump 2 precooling, cause loss of refrigeration capacity, the while befouling environment is for personal safety strip comes unfavorable factor; In the liquid course of conveying, there is the operations such as boosting, carry, stop sending of opening pump, termination of pumping and middle press liquid storage tank 3 of cryogenic liquid pump 2, can not realize carrying continuously liquid, simultaneously cryogenic liquid pump 2 also have precooling, start, stop, discharge opeing, the again operation such as pre-cold start-up, liquid-consumed more, operator's labor intensity is larger.
The model utility content
Therefore, how to carry continuously liquid to make improvement to discharging and the realization of cryogenic liquide of the prior art, thereby can effectively avoid loss of refrigeration capacity, the environmental pollution in the fluid discharge process and can carry continuously liquid, be the problem that present those skilled in the art need to solve.
According to one side of the present utility model, a kind of cryogenic liquide evaporation feedway is provided, described cryogenic liquide evaporation feedway comprises: the low pressure liquid storage tank stores low pressure liquid; Cryogenic liquid pump is communicated with the low pressure liquid storage tank, to the low pressure liquid pressurization of carrying from the low pressure liquid storage tank; A plurality of middle press liquid storage tanks are communicated with cryogenic liquid pump respectively, store the liquid of carrying from cryogenic liquid pump; Empty bath formula vaporizer is communicated with described a plurality of middle press liquid storage tanks, to the liquid pressing in described a plurality of middle press liquid storage tanks; The water-bath type vaporizer is communicated with described a plurality of middle press liquid storage tanks, and carries out heat exchange with highly pressurised liquid that sky is bathed after the pressurization of formula vaporizer, and formation will be transported to the gas of gas pipeline network; Low temperature frequency conversion liquor pump is communicated with the low pressure liquid storage tank, cryogenic liquide during by low temperature frequency conversion liquor pump since the gas that natural evaporation forms via pump after return line be back to the low pressure liquid storage tank.
Can be provided with the first low temperature modulating valve between low temperature frequency conversion liquor pump and low pressure liquid storage tank, the gas backstreaming that the natural evaporation in the first low temperature modulating valve opening/closing low temperature frequency conversion liquor pump forms is to the loop of low pressure liquid storage tank.
Can between low temperature frequency conversion liquor pump and described a plurality of middle press liquid storage tank, be provided with the second low temperature modulating valve, can between low temperature frequency conversion liquor pump and water-bath type vaporizer, be provided with the 3rd low temperature modulating valve.
After starting low temperature variable frequency pump liquid, can close the first low temperature modulating valve, carry liquid by the control of the second low temperature modulating valve to the water-bath type vaporizer, close gradually the second low temperature modulating valve simultaneously.
When the pressure of gas pipeline network raises when reaching predetermined threshold, can open gradually the 3rd low temperature and regulate, and turn down the second low temperature modulating valve, with to described a plurality of middle press liquid storage tank liquid make-up.
Can bathe between formula vaporizer and the described a plurality of middle press liquid storage tank at sky and be respectively arranged with a plurality of low temperature modulating valve that are positioned at the hydraulic fluid side, described a plurality of low temperature modulating valve are regulated the pressure that is transported to the liquid in described a plurality of middle press liquid storage tank.
Can bathe between formula vaporizer and the described a plurality of middle press liquid storage tank at sky and be respectively arranged with a plurality of cryogenic globe valve that are positioned at gas side, when the press liquid storage tank broke down in described a plurality of middle press liquid storage tanks at least one, the corresponding cryogenic globe valve in described a plurality of cryogenic globe valve was cut off described press liquid storage tank at least one.
Fluid discharge when cryogenic liquide that the utility model provides evaporation feedway can effectively be avoided precooling and the loss of refrigeration capacity that causes and the environmental pollution that brings thus, and can realize that continuous evaporation carries gas.
Description of drawings
In conjunction with the drawings, from the description of the following examples, the utility model these and/or other side and advantage will become clear, and are easier to understand, wherein:
Fig. 1 is the schematic diagram according to the structure of the cryogenic liquide evaporation feedway of prior art;
Fig. 2 is the schematic diagram according to the structure of cryogenic liquide evaporation feedway of the present utility model.
Drawing reference numeral among Fig. 1 and Fig. 2 is described as follows:
Embodiment
Below, describe embodiment of the present utility model in detail with reference to accompanying drawing.
Fig. 2 is the schematic diagram according to the structure of cryogenic liquide evaporation feedway of the present utility model.
With reference to Fig. 2, cryogenic liquide evaporation feedway comprises low pressure liquid storage tank 1, cryogenic liquid pump 2, a plurality of middle press liquid storage tank 3, empty bath formula vaporizer 4, water-bath type vaporizer 5 and low temperature frequency conversion liquor pump 6.Two middle press liquid storage tanks 3 have been shown among Fig. 2, but this only is example, a plurality of middle press liquid storage tanks 3 can be set as required, a plurality of middle press liquid storage tanks 3 can in parallelly use.
Low pressure liquid storage tank 1 can store low pressure liquid.Cryogenic liquid pump 2 is communicated with low pressure liquid storage tank 1, to the low pressure liquid pressurization of carrying from low pressure liquid storage tank 1.
A plurality of middle press liquid storage tanks 3 are communicated with cryogenic liquid pump 2 respectively, store the liquid of carrying from cryogenic liquid pump 2.
Empty bath formula vaporizer 4 is communicated with a plurality of middle press liquid storage tanks 3, to the liquid pressing in a plurality of middle press liquid storage tanks 3.
Water-bath type vaporizer 5 is communicated with a plurality of middle press liquid storage tanks 3, and carries out heat exchange with highly pressurised liquid that sky is bathed after 4 pressurizations of formula vaporizer, and formation will be transported to the gas of gas pipeline network.
Low temperature frequency conversion liquor pump 6 is communicated with low pressure liquid storage tank 1, after 6 precoolings of low temperature frequency conversion liquor pump, cryogenic liquide during by low temperature frequency conversion liquor pump 6 since the gas that natural evaporation forms via pump after return line be back to low pressure liquid storage tank 1.Therefore, can avoid because precooling and discharge unit cold have been stopped the phenomenon that surrounding environment is polluted simultaneously.
In the loop of the gas backstreaming that is provided with the natural evaporation formation in the first low temperature modulating valve 7, the first low temperature modulating valve 7 opening/closing low temperature frequency conversion liquor pumps 6 between low temperature frequency conversion liquor pump 6 and the low pressure liquid storage tank 1 to low pressure liquid storage tank 1.
Between low temperature frequency conversion liquor pump 6 and a plurality of middle press liquid storage tank 3, be provided with the second low temperature modulating valve 8, between low temperature frequency conversion liquor pump 6 and water-bath type vaporizer 5, be provided with the 3rd low temperature modulating valve 9.
In precooling low temperature frequency conversion liquor pump 6, can carry gas to the gas pipeline network evaporation by a plurality of middle press liquid storage tanks 3.After starting low temperature variable frequency pump liquid 6, can close the first low temperature modulating valve 07, carry liquid by 8 controls of the second low temperature modulating valve to water-bath type vaporizer 5, close gradually the second low temperature modulating valve 8 simultaneously.
When the pressure of gas pipeline network raises when reaching predetermined threshold and can satisfy steel-making, iron-smelting process demand, open gradually the 3rd low temperature and regulate 9, and turn down the second low temperature modulating valve 8, with to a plurality of middle press liquid storage tank 3 liquid make-up, can realize thus the continuity that the cryogenic liquide evaporation is carried.
Between sky bath formula vaporizer 4 and a plurality of middle press liquid storage tank 3, be respectively arranged with a plurality of low temperature modulating valve 10,11 that are positioned at the hydraulic fluid side.A plurality of low temperature modulating valve 10,11 can be regulated the pressure that is transported to the liquid in the middle press liquid storage tank 3 automatically, have guaranteed pressure stable of the liquid in the middle press liquid storage tank 3.
Between sky bath formula vaporizer 4 and a plurality of middle press liquid storage tank 3, be respectively arranged with a plurality of cryogenic globe valve 12,13 that are positioned at gas side.When the press liquid storage tank breaks down in a plurality of middle press liquid storage tanks 3 at least one, corresponding cryogenic globe valve in a plurality of cryogenic globe valve 12,13 can to described at least one the press liquid storage tank effectively cut off, the liquid evaporation that can guarantee thus to be in press liquid storage tank 3 in other of normal shape body is carried.
Although only show two low temperature modulating valve and two cryogenic globe valve among Fig. 2, should be appreciated that, the quantity of low temperature modulating valve can be corresponding with the quantity of middle press liquid storage tank 3,, can be that press liquid storage tank 3 arranges a low temperature modulating valve in each that is; Similarly, the quantity of cryogenic globe valve also can be corresponding with the quantity of middle press liquid storage tank 3,, can be that press liquid storage tank 3 arranges a cryogenic globe valve in each that is.
The low pressure liquid that stores in the low pressure liquid storage tank 1 can be for the liquid oxygen of steel-making, ironmaking, liquid nitrogen etc., but the utility model is not limited to this, and as required, the low pressure liquid that stores in the low pressure liquid storage tank 1 can be the various low pressure liquids of industrial application.
In cryogenic liquide evaporation feedway of the present utility model, low temperature frequency conversion liquor pump links to each other with low pressure liquid storage tank, middle press liquid storage tank and water-bath type vaporizer, therefore in the situation that normal precooling, cryogenic liquide is back to the low pressure liquid storage tank by the rear cold air that forms of low temperature frequency conversion liquor pump evaporation, reclaim the part cold, stopped simultaneously the pollution of the gas after the discharging to environment.Situation at normal evaporation conveying liquid, can be by the control of low temperature modulating valve to middle press liquid storage tank topping up or by low temperature frequency conversion liquor pump control flow, thereby continuously supply gas to the gas pipeline network evaporation, remedied the phenomenon of build-up of pressure deficiency owing to steel-making discontinuity usefulness gas.
In sum, the fluid discharge when cryogenic liquide that the utility model provides evaporation feedway can effectively be avoided precooling and the loss of refrigeration capacity that causes and the environmental pollution that brings thus, and can realize that continuous evaporation carries gas.
Although the utility model is specifically described with reference to its exemplary embodiment and is shown, but will be understood by those skilled in the art that, in the situation that does not break away from the spirit and scope of the present utility model that are defined by the claims, can carry out to it various changes of form and details.
Claims (7)
1. a cryogenic liquide evaporation feedway is characterized in that, described cryogenic liquide evaporation feedway comprises:
The low pressure liquid storage tank stores low pressure liquid;
Cryogenic liquid pump is communicated with the low pressure liquid storage tank, to the low pressure liquid pressurization of carrying from the low pressure liquid storage tank;
A plurality of middle press liquid storage tanks are communicated with cryogenic liquid pump respectively, store the liquid of carrying from cryogenic liquid pump;
Empty bath formula vaporizer is communicated with described a plurality of middle press liquid storage tanks, to the liquid pressing in described a plurality of middle press liquid storage tanks;
The water-bath type vaporizer is communicated with described a plurality of middle press liquid storage tanks, and carries out heat exchange with highly pressurised liquid that sky is bathed after the pressurization of formula vaporizer;
Low temperature frequency conversion liquor pump is communicated with the low pressure liquid storage tank, cryogenic liquide during by low temperature frequency conversion liquor pump since the gas that natural evaporation forms via pump after return line be back to the low pressure liquid storage tank.
2. cryogenic liquide according to claim 1 evaporates feedway, it is characterized in that, be provided with the first low temperature modulating valve between low temperature frequency conversion liquor pump and low pressure liquid storage tank, the gas backstreaming that the natural evaporation in the first low temperature modulating valve opening/closing low temperature frequency conversion liquor pump forms is to the loop of low pressure liquid storage tank.
3. cryogenic liquide according to claim 2 evaporates feedway, it is characterized in that, between low temperature frequency conversion liquor pump and described a plurality of middle press liquid storage tank, be provided with the second low temperature modulating valve, between low temperature frequency conversion liquor pump and water-bath type vaporizer, be provided with the 3rd low temperature modulating valve.
4. cryogenic liquide according to claim 3 evaporates feedway, it is characterized in that, after starting low temperature variable frequency pump liquid, close the first low temperature modulating valve, carry liquid by the control of the second low temperature modulating valve to the water-bath type vaporizer, close gradually the second low temperature modulating valve simultaneously.
5. cryogenic liquide according to claim 4 evaporates feedway, it is characterized in that, when the pressure rising of gas pipeline network reaches predetermined threshold, open gradually the 3rd low temperature and regulate, and turn down the second low temperature modulating valve, with to described a plurality of middle press liquid storage tank liquid make-up.
6. cryogenic liquide according to claim 1 evaporates feedway, it is characterized in that, be respectively arranged with a plurality of low temperature modulating valve that are positioned at the hydraulic fluid side between sky bath formula vaporizer and described a plurality of middle press liquid storage tank, described a plurality of low temperature modulating valve are regulated the pressure that is transported to the liquid in described a plurality of middle press liquid storage tank.
7. cryogenic liquide evaporation feedway according to claim 1 is characterized in that, bathe between formula vaporizer and the described a plurality of middle press liquid storage tank at sky and be respectively arranged with a plurality of cryogenic globe valve that are positioned at gas side,
When the press liquid storage tank broke down in described a plurality of middle press liquid storage tanks at least one, the corresponding cryogenic globe valve in described a plurality of cryogenic globe valve was cut off described press liquid storage tank at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220252030 CN202674833U (en) | 2012-05-31 | 2012-05-31 | Low-temperature liquid evaporating and transporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220252030 CN202674833U (en) | 2012-05-31 | 2012-05-31 | Low-temperature liquid evaporating and transporting device |
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| CN202674833U true CN202674833U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220252030 Expired - Fee Related CN202674833U (en) | 2012-05-31 | 2012-05-31 | Low-temperature liquid evaporating and transporting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107879362A (en) * | 2016-09-29 | 2018-04-06 | 内蒙古乌海化工有限公司 | A kind of induction system for evaporation of chlorine-alkali |
| CN111442190A (en) * | 2019-01-16 | 2020-07-24 | 上海广谋能源技术开发有限公司 | Method for storing energy by using tunnel |
| CN112013265A (en) * | 2019-05-29 | 2020-12-01 | 新疆八一钢铁股份有限公司 | Cold and pressure keeping method for low-temperature liquid storage tank |
-
2012
- 2012-05-31 CN CN 201220252030 patent/CN202674833U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107879362A (en) * | 2016-09-29 | 2018-04-06 | 内蒙古乌海化工有限公司 | A kind of induction system for evaporation of chlorine-alkali |
| CN111442190A (en) * | 2019-01-16 | 2020-07-24 | 上海广谋能源技术开发有限公司 | Method for storing energy by using tunnel |
| CN111442190B (en) * | 2019-01-16 | 2021-08-10 | 上海广谋能源技术开发有限公司 | Method for storing energy by using tunnel |
| CN112013265A (en) * | 2019-05-29 | 2020-12-01 | 新疆八一钢铁股份有限公司 | Cold and pressure keeping method for low-temperature liquid storage tank |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20150531 |
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| EXPY | Termination of patent right or utility model |