CN210463702U - Energy station based on LNG gasification heat transfer system - Google Patents
Energy station based on LNG gasification heat transfer system Download PDFInfo
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- CN210463702U CN210463702U CN201920914557.4U CN201920914557U CN210463702U CN 210463702 U CN210463702 U CN 210463702U CN 201920914557 U CN201920914557 U CN 201920914557U CN 210463702 U CN210463702 U CN 210463702U
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Abstract
The utility model discloses an energy station based on LNG gasification heat transfer system, including a plurality of fixed cold recovery gasifiers, a plurality of portable cold units of holding put. Compared with the prior art, the utility model discloses can carry out portable cooling, nimble multi-purpose to surrounding area.
Description
Technical Field
The utility model belongs to the technical field of the LNG cold energy utilizes, concretely relates to energy station based on LNG gasification heat transfer system.
Background
Liquefied Natural Gas (LNG) receives attention from all countries in the world due to its characteristics of high efficiency, energy conservation, small volume, convenient transportation, cleanness, environmental protection and the like, and becomes an important strategic reserve energy source. When LNG is gasified, a large amount of cold energy is released, about 830-860k J/kg, and the amount of electricity is about 231kwh/t, so that if the cold energy cannot be effectively utilized, great waste can be caused. The traditional refrigeration industry is a large consumer, and according to relevant statistics, the electric energy consumed by the existing refrigeration equipment accounts for 15% of the total power generation quantity all over the world, so that the LNG cold energy is used in the fields of industrial and civil refrigeration such as building air conditioning refrigeration, refrigeration of cold storages and the like, and is a great measure for energy conservation and emission reduction.
In the existing LNG cold storage utilization technology, patent CN103017434A discloses a cold storage device matched with an LNG gasification heat exchange system, which realizes input and output of secondary refrigerant by arranging a cold storage tank and a circulating water pump, and finally realizes cold supply by heat exchange between the secondary refrigerant and plate-type heat exchange gas. Patent CN104251598A discloses a system and method for maintaining continuous operation of LNG cold energy utilization device by cold accumulation, which realizes continuous cold supply when LNG is interrupted by arranging a cold accumulation pool and a heat exchanger, but the specific structure of the cold accumulation device is not given. The above patents all provide a continuous cooling method in the LNG vaporization station, and cannot solve the cooling problem in the nearby area and in a longer distance range. At present, the LNG station needs to be a gasifier, the gasifier is large in area, and cold energy generated by LNG gasification is directly discharged into air.
SUMMERY OF THE UTILITY MODEL
The utility model aims at disclosing an energy station based on LNG gasification heat transfer system utilizes the cold energy that the LNG phase transition produced, can realize preparing cold water, cold wind through the step heat exchange, utilizes its mobilizable cold-storage unit to shift the cold energy to the place of needs, solves the cold needs of using of peripheral area. Therefore, the utility model adopts the technical scheme that:
this kind of energy resource station based on LNG gasification heat transfer system, different with prior art is: comprises a plurality of fixed cold recovery gasifiers and a plurality of movable cold accumulation and release units.
Specifically, the fixed cold recovery gasifier comprises a sealed gasifier insulation box body, a gasification coil pipe capable of containing LNG flowing through is arranged in the sealed gasifier insulation box body, a secondary refrigerant coil is arranged at intervals with the gasification coil in a crossing way, an LNG inlet and an LNG outlet of the LNG gasification coil penetrate through the sealed heat preservation box body of the gasifier in a sealing way, the vaporizer secondary refrigerant inlet and the vaporizer secondary refrigerant outlet of the secondary refrigerant coil penetrate through the vaporizer sealed heat preservation box body in a sealed mode, the LNG inlet of the first fixed cold recovery vaporizer is connected with the LNG storage tank outlet, the LNG outlet of the last fixed cold recovery vaporizer is connected with a user pipe network, the LNG inlet of the middle fixed cold recovery vaporizer is connected with the LNG outlet of the adjacent fixed cold recovery vaporizer through a valve, and the LNG outlet is connected with the LNG inlet of the adjacent fixed cold recovery vaporizer through a valve; the coolant in the coolant coil of the plurality of stationary cold recovery gasifiers is the same or different;
the movable cold storage and release unit comprises a base, wherein a cold storage and release sealed heat insulation box body is fixedly arranged on the base, the front end of the cold storage and release sealed heat insulation box body is provided with an inlet, the rear end of the cold storage and release sealed heat insulation box body is provided with an outlet, a first coiled pipe heat exchanger and a second coiled pipe heat exchanger are arranged in the cold storage and release sealed heat insulation box body, secondary refrigerant is contained in the first coiled pipe heat exchanger, a secondary refrigerant inlet and a secondary refrigerant outlet of the first coiled pipe heat exchanger are respectively connected with a solution pump outlet and a solution pump inlet of a solution pump, and the secondary refrigerant inlet and the secondary refrigerant outlet are sealed, penetrate through the sealed heat insulation box body and can be in one-to-one butt joint with a gasifier secondary; the second coiled pipe heat exchanger is internally sealed and stores refrigerant; the secondary refrigerant in the first coiled pipe heat exchangers of the plurality of mobile cold accumulating and releasing units is the same as the secondary refrigerant in the secondary refrigerant coil of the fixed cold recovery gasifier connected with the secondary refrigerant heat exchangers.
The small LNG vaporizer is arranged between the last fixed cold recovery vaporizer and a user pipe network, an LNG vaporizer inlet of the small LNG vaporizer is connected with an LNG outlet of the last fixed cold recovery vaporizer through a valve, and an LNG vaporizer outlet of the small LNG vaporizer is connected with the user pipe network.
Furthermore, the serpentine coils of the first serpentine pipe heat exchanger and the second serpentine pipe heat exchanger are arranged in a crossed and spaced mode.
Furthermore, the coiled pipe of the second coiled pipe heat exchanger is sleeved outside the coiled pipe of the first coiled pipe heat exchanger to form an interlayer coiled pipe.
The air outlet of the fan is connected with the inlet, and the outlet is connected with a cold air pipeline of a lower user; the sealed insulation box body is divided into three parts by two partition plates with air holes: the front static pressure box is communicated with the inlet, the rear static pressure box is communicated with the outlet, and the interlayer coil is arranged in a cavity between the two partition plates.
Further, the water-saving device also comprises a water pump, wherein a water outlet of the water pump is connected with the inlet, and the outlet is connected with a lower user cold water pipeline.
Furthermore, the serpentine tube wall of the first serpentine tube heat exchanger and/or the serpentine tube wall of the second serpentine tube heat exchanger are/is provided with radiating fins, and four corners of the base are respectively and fixedly provided with a lifting hook.
Furthermore, the cold storage agent and the secondary refrigerant both adopt glycol solutions, and the concentration of the glycol solutions is determined according to the heat exchange temperature.
Compared with the prior art, the utility model discloses following profitable technological effect has:
1. the mobile cold supply and discharge unit can be used for mobile cold supply to surrounding areas, and is flexible and multipurpose.
2. Can directly prepare cold water or cold air, and meets different market demands.
3. Under the condition that the LNG station is large enough, the device can continuously supply cold through continuous connection of a plurality of fixed cold recovery gasifiers and a plurality of mobile cold storage and release units, and does not need external auxiliary refrigeration equipment completely.
4. Through a plurality of fixed cold recovery gasifiers and a plurality of portable cold units of holding and releasing, the area of conventional gasifier can significantly reduce, can also play the effect of gasifying some remaining LNG liquid.
Drawings
Fig. 1 is a schematic structural view of a stationary cold recovery gasifier according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of a mobile cold storage and discharge unit according to embodiment 1 of the present invention.
Fig. 3 is a schematic structural view of fig. 2 with an upper cover of the sealed thermal insulation box removed.
FIG. 4 is a schematic view of the structure of FIG. 2 with the sealed thermal container and the partition removed.
Fig. 5 is a partial cross-sectional view of fig. 4.
Fig. 6 is a partially enlarged view of fig. 5.
FIG. 7 is a schematic structural view of another perspective of the mobile cold storage and discharge unit of embodiment 1.
FIG. 8 is a schematic view of the structure of FIG. 7 with the sealed thermal container and the partition removed.
Fig. 9 is a schematic structural view of a mobile cold storage unit according to embodiment 2.
Fig. 10 is a schematic structural view of fig. 9 with the sealed thermal container body removed.
FIG. 11 is a schematic structural view of another perspective of the mobile cold storage and discharge unit of embodiment 2.
FIG. 12 is a schematic view of the sealed thermal container of FIG. 11 with the container removed.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Example 1, an energy station based on an LNG vaporization heat exchange system as shown in fig. 1 to 8 includes 3 fixed cold recovery vaporizers, 9 mobile cold storage and release units; the fixed type cold recovery vaporizer 20 comprises a vaporizer sealed heat preservation box body 200, a vaporizer coil 206 capable of containing LNG flowing through is arranged in the vaporizer sealed heat preservation box body 200, a secondary refrigerant coil 207 is arranged in a crossed manner at intervals with the vaporizer coil 206, an LNG inlet 203 and an LNG outlet 204 of the LNG vaporizer coil 206 penetrate through the vaporizer sealed heat preservation box body 200 in a sealed manner, a vaporizer secondary refrigerant inlet 201 and a vaporizer secondary refrigerant outlet 202 of the secondary refrigerant coil 207 penetrate through the vaporizer sealed heat preservation box body 200 in a sealed manner, the LNG inlet 203 of the first fixed type cold recovery vaporizer 20 is connected with an LNG storage tank outlet, the LNG outlet 204 of the last fixed type cold recovery vaporizer 20 is connected with a user pipe network, the LNG inlet 203 of the middle cold fixed type recovery vaporizer 20 is connected with the LNG outlet 204 of the adjacent fixed type cold recovery vaporizer 20 through a valve 205, The LNG outlet 204 is connected to the LNG inlet 203 of the stationary cold recovery gasifier 20 adjacent thereto by a valve 205; the coolant coils 207 of the plurality of stationary cold recovery gasifiers 20 contain different coolants: the coolant in the coolant coil of the first stationary cold recovery vaporizer is a glycol solution of about 56% concentration, the coolant in the coolant coil of the second stationary cold recovery vaporizer is a glycol solution of about 45% concentration, and the coolant in the coolant coil of the third stationary cold recovery vaporizer is a glycol solution of about 40% concentration; the small-scale LNG vaporizer 30 is arranged between the third fixed cold recovery vaporizer 20 and a user pipe network, an LNG vaporizer inlet 301 of the small-scale LNG vaporizer 30 is connected with an LNG outlet 204 of the third fixed cold recovery vaporizer 20 through a valve 205, and an LNG vaporizer outlet 302 is connected with the user pipe network. One, two, or three stationary cold recovery gasifiers can be used to accommodate different LNG reserves by closing or opening the valves 205 between the three stationary cold recovery gasifiers, or to obtain cold energy in different temperature ranges through different coolant models.
Every portable cold unit of putting of holding is installed respectively on a carriage with convenient the removal, the portable cold unit of putting of holding includes base 1, set firmly on the base 1 and hold and put cold sealed insulation box 2, it sets up import 21 to hold and put 2 front ends of cold sealed insulation box, and the rear end sets up export 22, hold and set up first coiled pipe heat exchanger 3 and second coiled pipe heat exchanger 4 in the cold sealed insulation box 2, the coiled pipe cover of second coiled pipe heat exchanger 4 is established the coiled pipe appearance of first coiled pipe heat exchanger 3 becomes intermediate layer coil pipe. The first coiled tube heat exchanger 3 contains secondary refrigerant, a secondary refrigerant inlet 31 and a secondary refrigerant outlet 32 of the first coiled tube heat exchanger are respectively connected with a solution pump outlet 51 and a solution pump inlet 52 of a solution pump 5, and the secondary refrigerant inlet 31 and the secondary refrigerant outlet 32 also penetrate through the sealed heat-insulating box body 2 in a sealing manner and can be in one-to-one butt joint with a gasifier secondary refrigerant inlet 201 and a gasifier secondary refrigerant outlet 202 of the fixed cold recovery gasifier 20; the second coiled pipe heat exchanger 4 is internally sealed and stores refrigerant; the coolant contained in the first serpentine heat exchanger 3 of the plurality of mobile storage and discharge cold units 10 is the same as the coolant contained in the coolant coil 207 of the stationary cold recovery vaporizer 20 to which it is connected, wherein the coolant contained in the first serpentine heat exchanger of the 3 mobile storage and discharge cold units is a glycol solution having a concentration of about 56%, and the coolant inlet and the coolant outlet of the first serpentine heat exchanger are capable of being connected to the vaporizer coolant inlet and the vaporizer coolant outlet of the first stationary cold recovery vaporizer, respectively; the secondary refrigerant contained in the first coiled heat exchangers of the 3 mobile cold accumulating and releasing units is ethylene glycol solution with the concentration of about 45%, and a secondary refrigerant inlet and a secondary refrigerant outlet of the mobile cold accumulating and releasing units can be respectively connected with the secondary refrigerant inlet and the secondary refrigerant outlet of the gasifier of the second fixed cold recovery gasifier; the secondary refrigerant contained in the first coiled heat exchangers of the 3 mobile cold accumulating and releasing units is ethylene glycol solution with the concentration of about 45%, and a secondary refrigerant inlet and a secondary refrigerant outlet of the mobile cold accumulating and releasing units can be respectively connected with the gasifier secondary refrigerant inlet and the gasifier secondary refrigerant outlet of a third fixed cold recovery gasifier; and the serpentine tube walls of the second serpentine tube heat exchanger 4 are provided with radiating fins. Still include fan 6, the air outlet of fan 6 with import 21 links to each other, export 22 is connected the next user cold wind pipeline. Four corners of the base 1 are respectively and fixedly provided with a lifting hook 11, so that the loading is convenient. The sealed heat preservation box body 2 is divided into three parts by two partition plates 8 with air holes: a front static pressure box 81 communicated with the inlet 21, a rear static pressure box 82 communicated with the outlet 22, and the cavity between the two partition plates 8 is provided with the interlayer coil. The front static pressure box and the rear static pressure box play the roles of distributing and stabilizing air flow.
When LNG gasification operation is required, the automobile provided with the first mobile cold storage and discharge unit 10 with the secondary refrigerant of 56% concentration is driven to an LNG gasification station, the inlet 21 and the outlet 22 of the mobile cold storage and discharge unit 10 are closed, and the secondary refrigerant inlet 31 and the secondary refrigerant outlet 32 of the mobile cold storage and discharge unit 10 on the automobile are respectively connected with the solution pump outlet 51 and the solution pump inlet 52 of the solution pump 5 of the first fixed cold recovery gasifier 20; the solution pump 5 is started to operate, the secondary refrigerant of the mobile cold storage and release unit 10 and the secondary refrigerant of the same type of the first fixed cold recovery vaporizer 20 are integrally circulated, the cold energy of the LNG cold recovery vaporizer is transferred to the cold storage agent stored in the second coiled tube heat exchanger 4 of the mobile cold storage and release unit through heat conversion, and when the temperature of the cold storage agent is detected to be reduced to a set temperature, the phase change of the cold storage agent occurs, and the solution pump 5 is closed. The vehicle equipped with the first mobile cold storage and discharge unit 10 is driven to a user who needs cold air, the inlet 21 and the outlet 22 are opened, the outlet 22 is connected with an air inlet pipe of a cold air storage, the vehicle-mounted engine is used for driving the fan 6 to operate, and cold stored in the cold storage agent and the sealed heat preservation box body 2 is discharged and sent to the user. When the temperature of the cold storage agent is detected to be increased to the set temperature and the output cold air temperature cannot reach the requirement of a user, the inlet 21 and the outlet 22 of the first mobile cold storage and release unit 10 are closed, the fan 6 is stopped, and the vehicle is driven to the LNG vaporizing station for cold storage again.
At the same time, the second vehicle with the mobile storage and discharge cold unit 10 having a coolant concentration of 45% is driven to the LNG vaporization station, and the above steps are repeated to dock with the second stationary cold recovery vaporizer 20, so that the mobile storage and discharge cold unit 10 on the second vehicle stores cold, and then the second vehicle transports the second mobile storage and discharge cold unit 10 to the user requiring cold wind, and also performs discharge cold according to the above steps.
Similarly, the third vehicle equipped with the third mobile cold storage and discharge unit 10 with the refrigerant concentration of 40% is driven to the LNG vaporization station to repeat the above steps, and is connected with the third fixed cold recovery vaporizer 20 for cold storage and transportation to the user needing cold wind for cold discharge.
After the first vehicle with the first mobile cold storage and discharge unit 10 after the cold discharge is returned to the LNG vaporization station, the first vehicle is again connected with the first fixed cold recovery vaporizer 20 for cold storage and is transported to a user needing cold wind for cold discharge.
After the second vehicle with the second mobile cold storage and discharge unit 10 after the cold discharge is returned to the LNG vaporization station, the second vehicle is again connected to the second fixed cold recovery vaporizer 20 for cold storage and is transported to the user needing cold wind for cold discharge.
……
By analogy, the operation is repeated in a circulating mode, and under the condition that the LNG station is large enough, continuous cold supply can be completed through continuous connection of the movable cold accumulation units, and external auxiliary refrigeration equipment is not needed completely. LNG gasification cold energy can be fully utilized.
Example 2, a power station based on an LNG vaporization heat exchange system as shown in fig. 1 and 8 to 11, is otherwise the same as the example, except that the serpentine coils of the first and second serpentine heat exchangers of the mobile cold accumulating and releasing unit are arranged in a crossed and spaced manner. The water outlet of the water pump is connected with the inlet, and the outlet is connected with a lower user cold water pipeline.
The cold water generated by the energy station can be used for precooling aquatic products in aquatic product processing, building air conditioners in summer, industrial factory building refrigeration, fruit precooling and the like, and the processes of cold accumulation and cold release are similar to those of embodiment 1 and are not repeated.
Claims (9)
1. The utility model provides an energy resource station based on LNG gasification heat transfer system which characterized in that: comprises a plurality of fixed cold recovery gasifiers (20) and a plurality of mobile cold accumulation and release units (10).
2. The energy station based on the LNG gasification heat exchange system of claim 1, wherein: the fixed cold recovery vaporizer (20) comprises a vaporizer sealed heat preservation box body (200), a vaporizer coil (206) capable of containing LNG flowing through is arranged in the vaporizer sealed heat preservation box body (200), and secondary refrigerant coils (207) are arranged in the vaporizer sealed heat preservation box body (206) at intervals in a crossed mode, an LNG inlet (203) and an LNG outlet (204) of the LNG vaporizer coil (206) penetrate through the vaporizer sealed heat preservation box body (200) in a sealed mode, a vaporizer secondary refrigerant inlet (201) and a vaporizer secondary refrigerant outlet (202) of the secondary refrigerant coil (207) penetrate through the vaporizer sealed heat preservation box body (200) in a sealed mode, the first LNG inlet (203) of the fixed cold recovery vaporizer (20) is connected with an LNG storage tank outlet, the last LNG outlet (204) of the fixed cold recovery vaporizer (20) is connected with a user pipe network, and the middle LNG inlet (203) of the fixed cold recovery vaporizer (20) is adjacent to the fixed cold recovery vaporizer (20) ) Is connected by a valve (205), and the LNG outlet (204) is connected by a valve (205) to the LNG inlet (203) of the stationary cold recovery gasifier (20) adjacent thereto; the coolant coil (207) contents of the plurality of stationary cold recovery gasifiers (20) are the same or different coolant;
the mobile cold storage and release unit (10) comprises a base (1), a cold storage and release sealed heat preservation box body (2) is fixedly arranged on the base (1), the front end of the cold storage and discharge sealed heat preservation box body (2) is provided with an inlet (21), the rear end is provided with an outlet (22), a first coiled pipe heat exchanger (3) and a second coiled pipe heat exchanger (4) are arranged in the storage cold-seal heat preservation box body (2), secondary refrigerant is contained in the first coiled pipe heat exchanger (3), the secondary refrigerant inlet (31) and the secondary refrigerant outlet (32) are respectively connected with the solution pump outlet (51) and the solution pump inlet (52) of the solution pump (5), the secondary refrigerant inlet (31) and the secondary refrigerant outlet (32) also penetrate through the sealed insulation box body (2) in a sealed mode and can be in one-to-one butt joint with a gasifier secondary refrigerant inlet (201) and a gasifier secondary refrigerant outlet (202) of the fixed type cold recovery gasifier (20); the second coiled pipe heat exchanger (4) is internally sealed and stores refrigerant; the coolant in the first coiled heat exchanger (3) of the plurality of mobile cold accumulating and releasing units (10) is the same as the coolant in the coolant coil (207) of the stationary cold recovery vaporizer (20) to which it is connected.
3. The energy station based on the LNG gasification heat exchange system of claim 2, wherein: the small-scale LNG vaporizer (30) is arranged between the last fixed cold recovery vaporizer (20) and a user pipe network, an LNG vaporizer inlet (301) of the small-scale LNG vaporizer (30) is connected with an LNG outlet (204) of the last fixed cold recovery vaporizer (20) through a valve (205), and an LNG vaporizer outlet (302) is connected with the user pipe network.
4. The energy station based on the LNG gasification heat exchange system of claim 2, wherein: the first coiled pipe heat exchanger (3) and the second coiled pipe heat exchanger (4) are arranged in a crossed and spaced mode.
5. The energy station based on the LNG gasification heat exchange system of claim 2, wherein: and the coiled pipe of the second coiled pipe heat exchanger (4) is sleeved outside the coiled pipe of the first coiled pipe heat exchanger (3) to form an interlayer coiled pipe.
6. The energy station based on the LNG gasification heat exchange system of claim 2, wherein: the air conditioner also comprises a fan (6), an air outlet of the fan (6) is connected with the inlet (21), and the outlet (22) is connected with a cold air pipeline of a lower user; the sealed heat preservation box body (2) is divided into three parts by two partition plates (8) with air holes: a front static pressure box (81) communicated with the inlet (21), a rear static pressure box (82) communicated with the outlet (22), and a cavity between the two clapboards (8) is provided with an interlayer coil.
7. The energy station based on the LNG gasification heat exchange system of claim 2, wherein: the water-saving device is characterized by further comprising a water pump (7), wherein a water outlet of the water pump (7) is connected with the inlet (21), and the outlet (22) is connected with a lower user cold water pipeline.
8. The energy station based on the LNG gasification heat exchange system of any one of claims 2, 4 and 5, wherein: and radiating fins are arranged on the serpentine pipe wall of the first serpentine pipe heat exchanger (3) and/or the second serpentine pipe heat exchanger (4), and lifting hooks (11) are fixedly arranged at four corners of the base (1) respectively.
9. The energy station based on the LNG gasification heat exchange system of claim 2, wherein: the cold storage agent and the secondary refrigerant both adopt glycol solutions, and the concentration of the glycol solutions is determined according to the heat exchange temperature.
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| CN201920914557.4U CN210463702U (en) | 2019-06-18 | 2019-06-18 | Energy station based on LNG gasification heat transfer system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243126A (en) * | 2019-06-18 | 2019-09-17 | 烟台睿加节能科技有限公司 | A kind of energy source station based on LNG gasification heat-exchange system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243126A (en) * | 2019-06-18 | 2019-09-17 | 烟台睿加节能科技有限公司 | A kind of energy source station based on LNG gasification heat-exchange system |
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