CN201496770U - Heat exchanging system for industrial gas production - Google Patents
Heat exchanging system for industrial gas production Download PDFInfo
- Publication number
- CN201496770U CN201496770U CN2009203084855U CN200920308485U CN201496770U CN 201496770 U CN201496770 U CN 201496770U CN 2009203084855 U CN2009203084855 U CN 2009203084855U CN 200920308485 U CN200920308485 U CN 200920308485U CN 201496770 U CN201496770 U CN 201496770U
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- heat exchanger
- industrial gas
- cold
- pipe
- cylindrical shell
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Abstract
The utility model discloses a heating exchanging system for industrial gas production, which comprises a cooling water circulation system and a low-temperature liquid conveying system which are respectively provided with a cooling tower (3), wherein a heat exchanger (8) for exchanging heat is arranged between the above two systems; the heat exchanger (8) comprises a barrel body (81) which is filled with cooling water and connected in parallel to the cooling tower (3) via an water inlet pipe and a water outlet pipe (10, 11); the heat exchanger (8) is also connected in parallel between a low-temperature storage tank (12) and a vaporizer (13) of the low-temperature liquid conveying system via a liquid inlet pipe and a liquid outlet pipe (91,93); and a spiral circulation heating pipe (92) is arranged between the liquid inlet pipe and the liquid outlet pipe (91,93). The heat exchanging system for industrial gas production saves a great deal of energy consumption for cooling the cooling water and improving freezing of the vaporizer, can guarantee normal production, remove potential risk, and greatly lower cost of running and maintenance of the device.
Description
Technical field
The utility model relates to industrial gas production, specifically relates to the cold and hot exchange system that industrial gas are produced.
Background technique
In the production of industrial gas, when using liquid oxygen to carry out cylinder filling and line transportation, temperature required is 0 ℃-40 ℃, if ambient temperature is lower than 10 ℃, particularly when winter, because the exchange capability of heat of the empty bath formula of low temperature vaporizer is limited, carburettor icing is serious, when the vaporizer outer pipe is lower than 0 ℃, can cause stopping production, usually influence ordinary production, and Yin Wendu crosses low easy bursting by freezing conveyance conduit and has potential safety hazard.Be head it off, the general method that adopts is that water spray and several big ventilating fans purge, and to strengthen scattering and disappearing of vaporizer cold, though certain effect is arranged like this, expend a large amount of power and waters, the energy consumption height.And when products such as production oxygen, argon gas, air, need use a large amount of air compressors, and be water-cooled, the compressor long-time running of air compressor, need cooling water condition (20 ℃) preferably, because load is excessive, many cooling towers of the cooling system of circulating water pool do not satisfy the cooling needs, and cooling water temperature is higher, particularly summer, the cooling pond temperature was up to 40 ℃, temperature drift when causing compressor operation, and the oxygenerator group operation period shortens, production capacity descends, energy consumption rises, and auxiliary material, spare part life cycle significantly shorten, and maintenance expenses rises; When cooling water temperature is too high, have only the low tap water of the temperature of adding, increased the consumption of water again.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of cold and hot exchange system of industrial gas production, it need not produce the cooling water temperature that new energy consumption just can reduce cooling water recirculation system, and raising enters the temperature of the liquid industrial gas of the empty bath formula of low temperature vaporizer, vaporizer is not-easy-to-freeze, stops the low temperature conveyance conduit and because of bursting by freezing security incident takes place.
The technical solution of the utility model is as follows: the cold and hot exchange system that a kind of industrial gas are produced, comprise the cooling water recirculation system and the cryogenic liquide transporting system that are provided with cooling tower, and between two described systems, be connected with heat exchanger and carry out exchange heat; Described heat exchanger comprises cylindrical shell that cooling water is housed and in parallel with described cooling tower by inlet tube and outlet tube; Described heat exchanger also is connected in parallel between the refrigerated storage tank and vaporizer of described cryogenic liquide transporting system by the liquid inlet and outlet pipe, is the circulation heating pipe that spirals between the described liquid inlet and outlet pipe; Be provided with open and close valve on the described inlet tube and outlet tube and on the branch road between described cooling tower and the intake pipe, be provided with open and close valve on institute's liquid inlet and outlet pipe and on the cryogenic liquide conveyance conduit in parallel with heat exchanger.
The further scheme of doing, described cooling water recirculation system comprises hot-tub, hot water pump, cooling tower, water cooling pond and the water supply pump that connects successively, and pneumatics unit and oxygenerator group, described pneumatics unit and oxygenerator group are in parallel and are connected between described water supply pump and the hot-tub.
Further, according to the characteristics of institute's fed sheet of a media, each set open and close valve is a ball valve on described cooling water pipeline, and each set open and close valve is the cryogenic globe valve of stainless steel on described cryogenic liquide conveyance conduit.
As to further improvement in the technical proposal, described circulation heating pipe be along described heat exchanger drum shaft to the rectangular disk coil that circles round, described rectangular disk coil is fixed by supporting bar and described cylindrical shell.By the fixing stability that can improve the circulation heating pipe of supporting bar; The rectangular disk coil that axially circles round need not use tube bender to carry out big R processing, convenient processing, and cut down finished cost; And the rectangular disk coil also can make cryogenic media stop the long period in heat exchanger tube, improves the heat exchange effect of cryogenic media.
As to further improvement in the technical proposal, described cryogenic liquide conveyance conduit is a Stainless Steel Tube, with corrosion-resistant.
As to further improvement in the technical proposal, described intake pipe and liquid inlet pipe lay respectively at two of described heat exchanger cylindrical shell, adopt liquid reverse flow heat exchange, countercurrent flow, along the temperature difference distribution uniform of heating surface two fluids, mean temperature difference is big, good effect of heat exchange.
As to further improvement in the technical proposal, be provided with outlet valve and peep hole at the top of described heat exchanger cylindrical shell, outlet valve is used for gas in the emptying cylindrical shell, makes cooling water can be full of heat exchanger tube, peep hole is used to observe cooling water use condition in the heat exchanger tube, and whether cooling water has icing phenomenon.
As to further improvement in the technical proposal, be provided with drain valve in the bottom of described heat exchanger cylindrical shell, so that when heat-exchange system does not use, the cooling water in the heat exchanger is bled off, prevent that cooling water from freezing in cylindrical shell.
Further, the entery and delivery port of described inlet tube and outlet tube is located at the bottom and the top of described heat exchanger cylindrical shell respectively.
Further, the liquid entering hole of described liquid inlet pipe is lower than the liquid outlet of described drain pipe.
The characteristics of the required different-energy of two systems when the utility model is produced according to industrial gas have been conceived the heat converting system of whole production system.A heat exchanger is installed between low-temperature storage tank and vaporizer, and is made the work of heat exchanger replacement in parallel cooling tower, make two systems obtain institute's energy requirement separately, in case the problem that the devaporation device freezes and alleviates frosting and reduce the cooling water serviceability temperature with cooling tower.The circulating water temperature that oxygenerator group compressor, air compressor plant air compressor come out after using is higher, utilize the pressure of hot water pump, make the cryogenic liquide pipeline absorb the heat of circulating water pipeline through heat exchanger, thereby improve the temperature of cryogenic liquide,, create better operating conditions for vaporizer reduces load, improve the icing phenomenon of vaporizer, circulating water behind the acquisition cold is got back to water cooling pond, uses for compressor.
Wherein, the flow direction of cryogenic liquide: cryogenic liquid storage tank → heat exchanger → vaporizer → use gas unit;
The flow direction of recirculated cooling water: hot-tub → hot water pump → heat exchanger → water cooling pond → water supply pump → oxygenerator (or air compressor) → hot-tub.
Owing to adopted technique scheme, the beneficial effects of the utility model are:
1, utilizes heat exchanger to make circulating water obtain cold, reduced the temperature of circulating water pool cooling water, improved the operating conditions of air compressor and oxygenerator group;
2, utilize heat exchanger to make the cryogenic liquide in the pipeline obtain heat, improved the temperature of cryogenic liquide in the pipeline, improved the operating conditions of vaporizer, improve carburettor icing, guarantee ordinary production, eliminate safe hidden trouble;
3, saved cooling water temperature, improve the needed big water gaging of carburettor icing, electric energy consumption, and reduce operation, the maintenance cost of equipment greatly.
Description of drawings
Fig. 1 is a workflow schematic representation of the present utility model.
Fig. 2 is the structural representation of the utility model heat exchanger embodiments.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is the schematic perspective view of circulation heating pipe among Fig. 2.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, the cold and hot exchange system that a kind of industrial gas are produced comprises cooling water recirculation system and cryogenic liquide transporting system.Wherein, cooling water recirculation system comprises hot-tub 1, hot water pump 2, cooling tower 3, water cooling pond 4 and the water supply pump 5 that connects successively, and pneumatics unit 6, oxygenerator group 7, pipeline and valve, the oxygenerator of the air compressor of pneumatics unit 6 and oxygenerator group 7 all is connected in parallel between water supply pump 5 and the hot-tub 1; The cryogenic liquide transporting system then comprises refrigerated storage tank 12, vaporizer 13 pipelines and valve, is connected with heat exchanger 8 and carries out exchange heat between two systems.As shown in Figure 1 and Figure 2, heat exchanger 8 comprises the cylindrical shell 81 that cooling water is housed, and cylindrical shell 81 is to be rolled by steel plate earlier to be welded as cylinder, also can be seamless steel pipe, and the formed seal container of end socket shutoff is used at two ends more then, and cylindrical shell 81 is fixed on the support 88.Be provided with inlet tube and outlet tube 10,11 at cylindrical shell 81 two, the entery and delivery port 86,87 of inlet tube and outlet tube 10,11 is located at the bottom and the top of cylindrical shell 81 respectively.Heat exchanger 8 is in parallel with cooling tower 3 by inlet tube and outlet tube 10,11, and intake pipe 10 is connected between hot water pump 2 and the cooling tower 3, and outlet pipe 11 then links to each other with water cooling pond 4.Also be provided with outlet valve 83 and peep hole 84 at the top of cylindrical shell 81, outlet valve 83 is used for gas in the emptying cylindrical shell 81, make cooling water can be full of cylindrical shell 81, peep hole 84 is used to observe the use condition of cooling water in the cylindrical shell 81, and peep hole 84 apertures are by the plexiglass sealing is arranged.Bottom at cylindrical shell 81 also is provided with drain valve 85, is used for cooling water in the discharge drum.
As shown in Figure 1 and Figure 2, heat exchanger 8 also is connected in parallel between the refrigerated storage tank 12 and vaporizer 13 of cryogenic liquide transporting system by liquid inlet and outlet pipe 91,93, liquid inlet and outlet pipe 91,93 penetrates from the two ends of cylindrical shell 81 respectively, liquid entering hole is lower than liquid outlet (as shown in Figure 2), is the circulation heating pipe 92 that spirals between liquid inlet and outlet pipe 91,93.To shown in Figure 4, circulation heating pipe 92 is the rectangular disk coils that axially circle round along heat exchanger cylindrical shell 81 as Fig. 2, and the rectangular disk coil is circumferential symmetric arrangement in cylindrical shell 81.Between each spiral tube and between spiral tube and the cylindrical shell 81, be welded with the supporting bar that Stainless Steel Tube is made, make the installation of circulation heating pipe 9 more firm.Intake pipe 10 and liquid inlet pipe 91 lay respectively at two of cylindrical shell 81, adopt liquid reverse flow heat exchange, make that like this mean temperature difference is big, good effect of heat exchange along two fluid temperature difference distribution uniform of heating surface.
As shown in Figure 1, for controlling liquid flows to and the inspection and repair shop need, be provided with open and close valve on the inlet tube and outlet tube 10,11 and on the branch road between cooling tower 3 and the intake pipe 10, these open and close valves are ball valve; Be provided with open and close valve on the liquid inlet and outlet pipe 91,93 and on the cryogenic liquide conveyance conduit 9 in parallel with heat exchanger 8, each set open and close valve is the cryogenic globe valve of stainless steel on these cryogenic liquide conveyance conduits, and each pipeline in the cryogenic liquide transporting system (comprising liquid inlet pipe 91, circulation heating pipe 92 and drain pipe 93) is corrosion resistant Stainless Steel Tube.
The cold and hot exchange system in industrial gas production that present embodiment provided is work like this: as shown in Figure 1, close first cryogenic globe valve 14, open second cryogenic globe valve 15 (normally open valve) and the 3rd cryogenic globe valve 16 (normally open valve), thereby close former cryogenic liquide conveyance conduit, cryogenic liquide enters heat exchanger 8 by liquid inlet pipe 91 through second cryogenic globe valve 15, flow back to cryogenic liquide conveyance conduit by drain pipe 93 through the 3rd cryogenic globe valve 16 by circulation heating pipe 92 heating backs, enter the existing rising of vaporizer 13 fluid temperatures, evaporator surface is not prone to icing, the frosting phenomenon, the vaporization efficency height; Open first ball valve 17 (normally open valve), second ball valve 18 (normally open valve), circulating water in the cooling water recirculation system after oxygenerator group, pneumatics unit use arrives hot-tub 1, enter heat exchanger 8 by intake pipe 10 through first ball valve 17 through hot water pump 2 again, cooling water is recycled heating pipe 92 will lower the temperature after, flow back to water cooling pond 4 by outlet pipe 11 through second ball valve 18, cooling water is sent into oxygenerator group 6, pneumatics unit 7 reciprocation cycle by water supply pump 5 circulations again in the water cooling pond 4.
If in summer, when only depending on the heat exchange quantity of heat exchanger 8 effectively not reduce cooling water temperature, can allow each cooling tower wheel change jobs, reduce water temperature.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. the cold and hot exchange system that industrial gas are produced is characterized in that: comprise the cooling water recirculation system and the cryogenic liquide transporting system that are provided with cooling tower (3), be connected with heat exchanger (8) and carry out exchange heat between two described systems; Described heat exchanger (8) comprises the cylindrical shell (81) that cooling water is housed and passes through inlet tube and outlet tube (10,11) in parallel with described cooling tower (3); Described heat exchanger (8) also is connected in parallel between the refrigerated storage tank (12) and vaporizer (13) of described cryogenic liquide transporting system by liquid inlet and outlet pipe (91,93), is the circulation heating pipe (92) that spirals between the described liquid inlet and outlet pipe (91,93); On described inlet tube and outlet tube (10,11), be provided with open and close valve, go up and on the cryogenic liquide conveyance conduit (9) in parallel, be provided with open and close valve with heat exchanger (8) at institute's liquid inlet and outlet pipe (91,93).
2. the cold and hot exchange system that industrial gas according to claim 1 are produced, it is characterized in that: described cooling water recirculation system comprises hot-tub (1), hot water pump (2), cooling tower (3), water cooling pond (4) and the water supply pump (5) that connects successively, and pneumatics unit (6) and oxygenerator group (7), the oxygenerator of the air compressor of described pneumatics unit (6) and oxygenerator group (7) all is connected in parallel between described water supply pump (5) and the hot-tub (1).
3. the cold and hot exchange system that industrial gas according to claim 1 are produced, it is characterized in that: each set open and close valve is a ball valve on described cooling water pipeline, and each set open and close valve is the cryogenic globe valve of stainless steel on described cryogenic liquide conveyance conduit.
4. the cold and hot exchange system that industrial gas according to claim 1 are produced, it is characterized in that: described circulation heating pipe (92) is the rectangular disk coil that axially circles round along described heat exchanger cylindrical shell (81), and described rectangular disk coil is fixing by supporting bar (82) and described cylindrical shell (81).
5. according to the cold and hot exchange system of claim 1 or 3 described industrial gas productions, it is characterized in that: described cryogenic liquide conveyance conduit is a Stainless Steel Tube.
6. the cold and hot exchange system that industrial gas according to claim 1 are produced, it is characterized in that: described intake pipe (10) and liquid inlet pipe (91) lay respectively at two of described heat exchanger cylindrical shell (81), adopt liquid reverse flow heat exchange.
7. according to the cold and hot exchange system of claim 1 or 4 or 6 described industrial gas productions, it is characterized in that: be provided with outlet valve (83) and peep hole (84) at the top of described heat exchanger cylindrical shell (81).
8. according to the cold and hot exchange system of claim 1 or 4 or 6 described industrial gas productions, it is characterized in that: be provided with drain valve (85) in the bottom of described heat exchanger cylindrical shell (81).
9. the cold and hot exchange system that industrial gas according to claim 1 are produced, it is characterized in that: the entery and delivery port (86,87) of described inlet tube and outlet tube (10,11) is located at the bottom and the top of described heat exchanger cylindrical shell (81) respectively.
10. the cold and hot exchange system that industrial gas according to claim 1 are produced, it is characterized in that: the liquid entering hole of described liquid inlet pipe (91) is lower than the liquid outlet of described drain pipe (93).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203084855U CN201496770U (en) | 2009-08-21 | 2009-08-21 | Heat exchanging system for industrial gas production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203084855U CN201496770U (en) | 2009-08-21 | 2009-08-21 | Heat exchanging system for industrial gas production |
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| Publication Number | Publication Date |
|---|---|
| CN201496770U true CN201496770U (en) | 2010-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203084855U Expired - Fee Related CN201496770U (en) | 2009-08-21 | 2009-08-21 | Heat exchanging system for industrial gas production |
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| CN (1) | CN201496770U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852785A (en) * | 2011-06-29 | 2013-01-02 | 沈阳铝镁设计研究院有限公司 | Water circulation system for sealing and cooling device |
| CN103968250A (en) * | 2014-04-25 | 2014-08-06 | 江苏赛宝龙石化有限公司 | Efficient thermal conduction oil heat supply system |
| CN105546341A (en) * | 2016-01-22 | 2016-05-04 | 池州森大轻工制品有限公司 | Gas subpackage device |
| CN108645247A (en) * | 2018-07-03 | 2018-10-12 | 中海油能源发展股份有限公司珠海冷能利用分公司 | A kind of comprehensive utilization cold energy of liquefied natural gas changes cooling system and method |
| CN109676114A (en) * | 2019-02-25 | 2019-04-26 | 四川福蓉科技股份公司 | A kind of aluminium bar casting recirculated water thermostatic control system and method |
-
2009
- 2009-08-21 CN CN2009203084855U patent/CN201496770U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852785A (en) * | 2011-06-29 | 2013-01-02 | 沈阳铝镁设计研究院有限公司 | Water circulation system for sealing and cooling device |
| CN103968250A (en) * | 2014-04-25 | 2014-08-06 | 江苏赛宝龙石化有限公司 | Efficient thermal conduction oil heat supply system |
| CN105546341A (en) * | 2016-01-22 | 2016-05-04 | 池州森大轻工制品有限公司 | Gas subpackage device |
| CN108645247A (en) * | 2018-07-03 | 2018-10-12 | 中海油能源发展股份有限公司珠海冷能利用分公司 | A kind of comprehensive utilization cold energy of liquefied natural gas changes cooling system and method |
| CN109676114A (en) * | 2019-02-25 | 2019-04-26 | 四川福蓉科技股份公司 | A kind of aluminium bar casting recirculated water thermostatic control system and method |
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Legal Events
| Date | Code | Title | Description |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20180821 |