CN113295040A - LNG-hydrogenation co-building station has self-cleaning function's cryogenic heat exchanger - Google Patents

LNG-hydrogenation co-building station has self-cleaning function's cryogenic heat exchanger Download PDF

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Publication number
CN113295040A
CN113295040A CN202110695374.XA CN202110695374A CN113295040A CN 113295040 A CN113295040 A CN 113295040A CN 202110695374 A CN202110695374 A CN 202110695374A CN 113295040 A CN113295040 A CN 113295040A
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CN
China
Prior art keywords
heat exchange
cavity
lng
heat
self
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Pending
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CN202110695374.XA
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Chinese (zh)
Inventor
赵磊
向艺
白利强
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Tianjin Baiyan Hydrogenation Equipment Co ltd
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Tianjin Baiyan Hydrogenation Equipment Co ltd
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Priority to CN202110695374.XA priority Critical patent/CN113295040A/en
Publication of CN113295040A publication Critical patent/CN113295040A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G3/00—Rotary appliances
    • F28G3/10—Rotary appliances having scrapers, hammers, or cutters, e.g. rigidly mounted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
    • F17C2227/0316—Water heating
    • F17C2227/0318—Water heating using seawater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
    • F28D2021/0064—Vaporizers, e.g. evaporators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention relates to the technical field of LNG (liquefied natural gas) low-temperature heat exchangers, in particular to a low-temperature heat exchanger with a self-cleaning function for an LNG-hydrogenation combined station and a using method thereof. The invention aims to solve the technical problems that a medium with poor heat transfer performance of the rear half part of the heat exchanger is easy to freeze, liquid LNG which is not completely gasified is easy to stay in an exhaust pipe for a long time to cause damage of pipe fittings, and deposits are easy to deposit in the heat exchanger to influence the heat exchange efficiency. In order to solve the technical problem, the invention provides a low-temperature heat exchanger with a self-cleaning function for an LNG-hydrogenation combined station, which consists of a base, a heat exchange mechanism, a heat dissipation mechanism and a flow dividing mechanism.

Description

LNG-hydrogenation co-building station has self-cleaning function's cryogenic heat exchanger
Technical Field
The invention relates to the technical field of LNG (liquefied natural gas) low-temperature heat exchangers, in particular to a low-temperature heat exchanger with a self-cleaning function for an LNG-hydrogenation combined station.
Background
The heat exchanger is an energy-saving device for transferring heat between materials between two or more fluids with different temperatures, and is used for transferring heat from the fluid with higher temperature to the fluid with lower temperature to make the temperature of the fluid reach the index specified by the process so as to meet the requirements of process conditions, and is also one of main devices for improving the utilization rate of energy.
The prior art has at least the following problems which are not solved: 1. when the existing heat exchanger works, some conventional media such as saline water, glycol aqueous solution, ammonia gas and the like have higher freezing points, ice is formed due to local supercooling if the conventional media exchange heat with LNG, an ice layer frozen along with the prolonging of time has a tendency of thickening, and particularly the heat transfer performance of a heat exchange device is deteriorated in the rear half part of the heat exchanger; 2. in the existing structure, when the temperature of a medium is low, LNG cannot be completely gasified smoothly, liquid LNG easily enters an exhaust pipe through a heat exchange pipe and stays in the exhaust pipe for a long time, and a welding seam between a pipe head and a pipe plate of the exhaust pipe is easy to crack, so that the whole system is damaged; 3. the existing main heating and gasifying device is used for introducing seawater into the heat exchanger to exchange heat with intermediate media and LNG, impurities in the seawater are more, sediment is easy to precipitate after the seawater stays in the heat exchanger for a long time, and the heat exchange area is reduced, so that the heat exchange efficiency of the heat exchanger is influenced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the low-temperature heat exchanger with the self-cleaning function for the LNG-hydrogenation combined station, and solves the problems that a medium with poor heat transfer performance of the rear half part of the heat exchanger is easy to freeze, liquid LNG which is not completely gasified is easy to stay in an exhaust pipe for a long time, pipe fittings are damaged, and deposits are easy to deposit in the heat exchanger to influence the heat exchange efficiency.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a LNG-hydrogenation closes low temperature heat exchanger that station built has self-cleaning function, includes the base, the top fixedly connected with heat transfer mechanism of base, and swing joint has the hob in the heat transfer mechanism, the top fixedly connected with motor and the heat dissipation mechanism of heat transfer mechanism, the reposition of redundant personnel mechanism has been cup jointed to the heat transfer mechanism internal fixation, and the both sides difference fixedly connected with of heat transfer mechanism outer wall rather than air inlet flange pipe, exhaust flange pipe, three flange pipe and the three flange pipe of draining of inside intercommunication.
Preferably, the heat exchange mechanism comprises a cylinder body which is fixedly connected with the top of the base, a water inlet cavity, a mechanical cavity, a gas outlet cavity, a first heat exchange cavity, a second heat exchange cavity and a third heat exchange cavity are arranged in the cylinder body, the first heat exchange cavity is fixedly connected with the bottoms of the water inlet cavity, the mechanical cavity and the air outlet cavity, the screw rod is movably inserted in the first heat exchange cavity, the second heat exchange cavity and the third heat exchange cavity, the top of the screw rod penetrates through the mechanical cavity and is fixedly connected with the output end of the motor above the mechanical cavity, the air inlet flange pipe, the exhaust flange pipe, the three water inlet flange pipes and the three water discharge flange pipes are respectively and fixedly connected with the two sides of the outer wall of the cylinder body, and the other ends of the air inlet flange pipe and the air outlet flange pipe are respectively communicated with the air outlet cavity and the water inlet cavity in a penetrating way, and the other ends of the three water inlet flange pipes and the three water discharge flange pipes penetrate through and are communicated to the two sides of the first heat exchange cavity, the second heat exchange cavity and the third heat exchange cavity.
Preferably, heat dissipation mechanism includes the conduction board, and the fixed interlude of conduction board is at the top of barrel, and the top fixed connection heating panel of conduction board, the bottom of conduction board runs through the barrel and extends to the intracavity of giving vent to anger and two first deflector and second deflector fixed connection, and the opening of running through to its bottom is seted up at the top of second deflector.
Preferably, reposition of redundant personnel mechanism includes the heat transfer box, and heat transfer box fixed connection is in the relative one side of third heat transfer intracavity wall, and the top fixedly connected with of heat transfer box and the first heat exchange tube and the second heat exchange tube of its inside intercommunication, the top of first heat exchange tube and second heat exchange tube from the bottom up respectively runs through third heat transfer chamber, second heat transfer chamber and first heat transfer chamber in proper order and respectively with the intake antrum with go out the fixed intercommunication in air cavity, the bottom swing joint of hob is at the top surface of heat transfer box.
Preferably, the bottom of the inner wall of each of the first heat exchange cavity, the second heat exchange cavity and the third heat exchange cavity is provided with a drainage slope, and the three drainage flange pipes are respectively arranged at the lower positions of the three drainage slopes.
Preferably, the side section of the second guide plate is of a semicircular structure, and the outer wall of the second guide plate is fixedly connected with the inner wall of the air outlet cavity.
Preferably, the number of the first heat exchange tubes and the second heat exchange tubes is not less than twenty, and the first heat exchange tubes and the second heat exchange tubes are symmetrically arranged on two sides of the heat exchange box by taking the central line of the front surface of the heat exchange box as an axis.
Preferably, the bottom of the inner wall of the heat exchange box is provided with an inclined slope, and the first heat exchange tube is positioned on one side of a low position of the inclined slope.
(III) advantageous effects
The invention provides a low-temperature heat exchanger with a self-cleaning function for an LNG-hydrogenation combined station, which has the following beneficial effects:
(1) this LNG-hydrogenation closes low temperature heat exchanger who builds station and have self-cleaning function can make the sea water to the liquid LNG sectional type heat transfer in the heat transfer mechanism through the cooperation in first heat transfer chamber, second heat transfer chamber and third heat transfer chamber, and the sea water flow is greater than liquid LNG, at the in-process of first heat exchange tube, the vortex of second heat exchange tube, carries out the heat transfer by a large scale and can effectively avoid the stifled problem of conventional heat transfer medium freezing, slightly freezes appear, also can carry out broken discharge through the hob.
(2) This LNG-hydrogenation closes low temperature heat exchanger who builds station and have self-cleaning function forms U type return circuit through the cooperation of first heat exchange tube, second heat exchange tube and heat transfer box, and under hydraulic pressure's effect, gasified LNG flows to the intracavity of giving vent to anger, and the LNG that does not totally gasify can stop in it to through the setting of heat dissipation mechanism, carry out the secondary heat transfer and make its complete gasification back, discharge through the discharge flange pipe, effectively avoid liquid LNG to cause the damage to the key, simple structure and practicality are stronger.
(3) The low-temperature heat exchanger with the self-cleaning function of the LNG-hydrogenation combined station is arranged through the drainage gradient at the bottoms of the first heat exchange cavity, the second heat exchange cavity and the third heat exchange cavity, so that sediments in seawater can be accumulated to the drainage flange pipe, and can be cleaned in a self-cleaning mode through flowing seawater or a spiral rod, and therefore the influence of accumulation of the sediments on the heat exchange efficiency is avoided.
Drawings
FIG. 1 is a front cross-sectional view of a structure of the present invention;
FIG. 2 is a perspective view of the structure of the present invention;
FIG. 3 is a top cross-sectional view of a mechanical chamber of the present invention;
FIG. 4 is a top cross-sectional view of a first heat exchange tube of the construction of the present invention;
FIG. 5 is a top cross-sectional view of a second deflector of the present invention;
fig. 6 is a top view of a cartridge in accordance with the present invention.
In the figure: 1. a base; 2. a heat exchange mechanism; 201. a barrel; 202. a water inlet cavity; 203. a mechanical cavity; 204. an air outlet cavity; 205. a first heat exchange chamber; 206. a second heat exchange chamber; 207. a third heat exchange chamber; 4. a motor; 3. a screw rod; 5. a heat dissipation mechanism; 501. a conductive plate; 502. a heat dissipation plate; 503. a first guide plate; 504. a second guide plate; 505. a port; 6. a flow dividing mechanism; 601. a heat exchange box; 602. a first heat exchange tube; 603. a second heat exchange tube; 7. an air inlet flange pipe; 8. an exhaust flange pipe; 9. a water inlet flange pipe; 10. a drain flange pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, a low temperature heat exchanger with a self-cleaning function for an LNG-hydrogen co-building station comprises a base 1, a heat exchange mechanism 2 is fixedly connected to the top of the base 1, a screw rod 3 is movably connected to the inside of the heat exchange mechanism 2, a motor 4 and a heat dissipation mechanism 5 are fixedly connected to the top of the heat exchange mechanism 2, a flow distribution mechanism 6 is fixedly sleeved to the inside of the heat exchange mechanism 2, and an air inlet flange pipe 7, an air outlet flange pipe 8, three water inlet flange pipes 9 and three water outlet flange pipes 10 which are communicated with the inside of the heat exchange mechanism 2 are fixedly connected to two sides of the outer wall of the heat exchange mechanism 2 respectively.
In the invention, a heat exchange mechanism 2 comprises a cylinder 201, the cylinder 201 is fixedly connected to the top of a base 1, a water inlet cavity 202, a mechanical cavity 203, an air outlet cavity 204, a first heat exchange cavity 205, a second heat exchange cavity 206 and a third heat exchange cavity 207 are arranged in the cylinder 201, the first heat exchange cavity 205 is fixedly connected to the bottoms of the water inlet cavity 202, the mechanical cavity 203 and the air outlet cavity 204, a spiral rod 3 is movably inserted into the first heat exchange cavity 205, the second heat exchange cavity 206 and the third heat exchange cavity 207, the top of the spiral rod 3 penetrates through the mechanical cavity 203 and is fixedly connected with the output end of a motor 4 above the spiral rod, an air inlet flange pipe 7, an air outlet flange pipe 8, three water inlet flange pipes 9 and three water outlet flange pipes 10 are fixedly connected to two sides of the outer wall of the cylinder 201, the other ends of the air inlet flange pipe 7 and the air outlet flange pipe 8 penetrate through the air outlet cavity 204 and the water inlet cavity 202, and the other ends of the three water inlet flange pipes 9 and the three water, Second heat exchange chamber 206 and third heat exchange chamber 207.
In the present invention, the heat dissipation mechanism 5 includes a conduction plate 501, the conduction plate 501 is fixedly inserted into the top of the cylinder 201, the top of the conduction plate 501 is fixedly connected with a heat dissipation plate 502, the bottom end of the conduction plate 501 penetrates through the cylinder 201 and extends into the air outlet cavity 204 to be fixedly connected with two first guide plates 503 and two second guide plates 504, the top of the second guide plate 504 is provided with a through opening 505 penetrating to the bottom thereof, the first guide plates 503 and the second guide plates 504 can play a role in isolating the incompletely gasified LNG and circulate under the cooperation of the through opening 505, and the heat dissipation plate 502 conducts heat to the completely gasified LNG through the external temperature, so that the completely gasified LNG is discharged through the water inlet flange pipe 9.
In the invention, the flow dividing mechanism 6 comprises a heat exchange box 601, the heat exchange box 601 is fixedly connected to one side opposite to the inner wall of the third heat exchange cavity 207, the top of the heat exchange box 601 is fixedly connected with a first heat exchange tube 602 and a second heat exchange tube 603 which are communicated with the inside of the heat exchange box 601, the top ends of the first heat exchange tube 602 and the second heat exchange tube 603 sequentially penetrate through the third heat exchange cavity 207, the second heat exchange cavity 206 and the first heat exchange cavity 205 from bottom to top and are respectively and fixedly communicated with the water inlet cavity 202 and the air outlet cavity 204, and the bottom end of the spiral rod 3 is movably connected to the top surface of the heat exchange box 601.
In the invention, the bottoms of the inner walls of the first heat exchange cavity 205, the second heat exchange cavity 206 and the third heat exchange cavity 207 are all provided with drainage slopes, and the three drainage flange pipes 10 are respectively arranged at the lower positions of the three drainage slopes.
In the invention, the side section of the second guide plate 504 is a semicircular structure, and the outer wall of the second guide plate 504 is fixedly connected with the inner wall of the air outlet cavity 204.
In the invention, the number of the first heat exchange tubes 602 and the second heat exchange tubes 603 is not less than twenty, and the first heat exchange tubes 602 and the second heat exchange tubes 603 are symmetrically arranged on two sides of the heat exchange box 601 by taking the center line of the front surface of the heat exchange box as an axis.
In the invention, the bottom of the inner wall of the heat exchange box 601 is provided with an inclined slope, and the first heat exchange tube 602 is positioned at one side of the lower position of the inclined slope.
According to the invention, the first heat exchange cavity 205, the second heat exchange cavity 206 and the third heat exchange cavity 207 are matched, so that the seawater can perform sectional heat exchange on the liquid LNG in the heat exchange mechanism 2, the flow of the seawater is larger than that of the liquid LNG, heat exchange is performed in a large area in the process of turbulent flow of the first heat exchange tube 602 and the second heat exchange tube 603, the problem of freezing and blocking of a conventional heat exchange medium can be effectively avoided, slight icing occurs, the liquid LNG can be crushed and discharged through the screw rod 3, a U-shaped loop is formed through the matching of the first heat exchange tube 602, the second heat exchange tube 603 and the heat exchange box 601, the gasified LNG flows into the gas outlet cavity 204, the incompletely gasified LNG can stay in the gas outlet cavity, and the completely gasified LNG can be discharged through the exhaust flange tube 8 after complete gasification through the secondary heat exchange by the arrangement of the heat dissipation mechanism 5, the damage of the liquid LNG to the key can be effectively avoided, the structure is simple, the practicability is strong, and the heat exchange efficiency is high, and the heat exchange efficiency is improved, The drainage slopes at the bottoms of the second heat exchange cavity 206 and the third heat exchange cavity 207 are arranged, so that sediments in seawater can be accumulated towards the drainage flange pipe 10, and can be cleaned by self-cleaning through flowing seawater or the spiral rod 3, and the influence of accumulation of sediments on heat exchange efficiency is avoided.
The working principle is as follows: firstly, LNG enters the water inlet cavity 202 from the air inlet flange pipe 7, stays in the heat exchange box 601 through the first heat exchange pipe 602, flows to the second heat exchange pipe 603 under the action of hydraulic pressure, in the process, seawater enters the first heat exchange cavity 205, the second heat exchange cavity 206 and the third heat exchange cavity 207 through the three water inlet flange pipes 9 respectively, and exchanges heat with the first heat exchange pipe 602 and the second heat exchange pipe 603, gasified LNG flows to the air outlet cavity 204, incompletely gasified LNG can stay in the air outlet cavity, secondary heat exchange is carried out through the first guide plate 503 and the second guide plate 504 to completely gasify the LNG, the gasified LNG is discharged through the exhaust flange pipe 8, sediments in the seawater can be accumulated to the drain flange pipe 10 and can be cleaned through the flowing seawater or the spiral rod 3, when a medium is subjected to self-cleaning, the spiral rod 3 can be driven to rotate through the motor 4, the medium is stirred to avoid ice layer accumulation.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a LNG-hydrogenation co-construction station has self-cleaning function's cryogenic heat exchanger, includes base (1), its characterized in that: the heat exchanger is characterized in that the heat exchange mechanism (2) is fixedly connected to the top of the base (1), the spiral rod (3) is movably connected to the heat exchange mechanism (2), the motor (4) and the heat dissipation mechanism (5) are fixedly connected to the top of the heat exchange mechanism (2), the shunt mechanism (6) is fixedly connected to the heat exchange mechanism (2) in a sleeved mode, and the air inlet flange pipe (7), the air exhaust flange pipe (8), the three water inlet flange pipe (9) and the three water drainage flange pipe (10) are fixedly connected to the two sides of the outer wall of the heat exchange mechanism (2) respectively and communicated with the inside of the outer wall of the heat exchange mechanism.
2. The cryogenic heat exchanger with self-cleaning function for the LNG-hydrogenation combined station as claimed in claim 1, wherein: the heat exchange mechanism (2) comprises a cylinder body (201), the cylinder body (201) is fixedly connected to the top of the base (1), a water inlet cavity (202), a mechanical cavity (203), a gas outlet cavity (204), a first heat exchange cavity (205), a second heat exchange cavity (206) and a third heat exchange cavity (207) are formed in the cylinder body (201), the first heat exchange cavity (205) is fixedly connected to the bottoms of the water inlet cavity (202), the mechanical cavity (203) and the gas outlet cavity (204), the spiral rod (3) is movably inserted into the first heat exchange cavity (205), the second heat exchange cavity (206) and the third heat exchange cavity (207), the top of the spiral rod (3) penetrates through the mechanical cavity (203) and is fixedly connected with the output end of the motor (4) above the spiral rod, the gas inlet flange pipe (7), the gas exhaust flange pipe (8), the three water inlet flange pipes (9) and the three water discharge flange pipes (10) are fixedly connected to two sides of the outer wall of the cylinder body (201), and the other ends of the air inlet flange pipe (7) and the air outlet flange pipe (8) are respectively communicated into the air outlet cavity (204) and the water inlet cavity (202), and the other ends of the three water inlet flange pipes (9) and the three water outlet flange pipes (10) are respectively communicated to the two sides of the first heat exchange cavity (205), the second heat exchange cavity (206) and the third heat exchange cavity (207).
3. The cryogenic heat exchanger with self-cleaning function for the LNG-hydrogenation combined building station as claimed in claims 1 and 2, wherein: heat dissipation mechanism (5) are including conducting plate (501), and conducting plate (501) fixed interlude at the top of barrel (201), and the top fixed connection heating panel (502) of conducting plate (501), the bottom of conducting plate (501) runs through barrel (201) and extend to go out in air cavity (204) with two first deflector (503) and second deflector (504) fixed connection, and the top of second deflector (504) is seted up and is run through to opening (505) of its bottom.
4. The cryogenic heat exchanger with self-cleaning function for the LNG-hydrogenation combined building station as claimed in claims 1 and 2, wherein: reposition of redundant personnel mechanism (6) are including heat transfer box (601), and heat transfer box (601) fixed connection is in the relative one side of third heat transfer chamber (207) inner wall, and the top fixedly connected with of heat transfer box (601) and first heat exchange tube (602) and second heat exchange tube (603) of its inside intercommunication, the top of first heat exchange tube (602) and second heat exchange tube (603) runs through third heat transfer chamber (207), second heat transfer chamber (206) and first heat transfer chamber (205) respectively from the bottom up in proper order and respectively with intake antrum (202) and play fixed intercommunication in air cavity (204), the bottom swing joint of hob (3) is at the top surface of heat transfer box (601).
5. The cryogenic heat exchanger with self-cleaning function for the LNG-hydrogenation combined station as claimed in claim 2, wherein: the bottom of the inner wall of each of the first heat exchange cavity (205), the second heat exchange cavity (206) and the third heat exchange cavity (207) is provided with a drainage gradient, and the three drainage flange pipes (10) are arranged at the lower positions of the three drainage gradients respectively.
6. The cryogenic heat exchanger with self-cleaning function for the LNG-hydrogenation integration station as claimed in claims 2 and 3, wherein: the side section of the second guide plate (504) is of a semicircular structure, and the outer wall of the second guide plate (504) is fixedly connected with the inner wall of the air outlet cavity (204).
7. The cryogenic heat exchanger with self-cleaning function for the LNG-hydrogenation combined station as claimed in claim 4, wherein: the number of the first heat exchange tubes (602) and the number of the second heat exchange tubes (603) are not less than twenty, and the first heat exchange tubes (602) and the second heat exchange tubes (603) are symmetrically arranged on two sides of the heat exchange box (601) by taking the center line of the front surface of the heat exchange box as an axis.
8. The cryogenic heat exchanger with self-cleaning function for the LNG-hydrogenation combined station as claimed in claim 4, wherein: the bottom of the inner wall of the heat exchange box (601) is provided with an inclined slope, and the first heat exchange tube (602) is positioned on one side of a lower position of the inclined slope.
CN202110695374.XA 2021-06-23 2021-06-23 LNG-hydrogenation co-building station has self-cleaning function's cryogenic heat exchanger Pending CN113295040A (en)

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CN202110695374.XA CN113295040A (en) 2021-06-23 2021-06-23 LNG-hydrogenation co-building station has self-cleaning function's cryogenic heat exchanger

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117029535A (en) * 2023-08-28 2023-11-10 舟山市质量技术监督检测研究院 Seawater heat exchange system for LNG cold energy power generation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117029535A (en) * 2023-08-28 2023-11-10 舟山市质量技术监督检测研究院 Seawater heat exchange system for LNG cold energy power generation
CN117029535B (en) * 2023-08-28 2024-03-19 舟山市质量技术监督检测研究院 Seawater heat exchange system for LNG cold energy power generation

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