CN110081308A - A kind of LNG unloading unit convenient for taking - Google Patents

A kind of LNG unloading unit convenient for taking Download PDF

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Publication number
CN110081308A
CN110081308A CN201910462043.4A CN201910462043A CN110081308A CN 110081308 A CN110081308 A CN 110081308A CN 201910462043 A CN201910462043 A CN 201910462043A CN 110081308 A CN110081308 A CN 110081308A
Authority
CN
China
Prior art keywords
lng
valve
immersed pump
storage tank
cryogenic storage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910462043.4A
Other languages
Chinese (zh)
Inventor
吴志锐
李波
熊英
祁志曌
吴卓君
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Jari Special Equipment Co Ltd
Original Assignee
Henan Jari Special Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan Jari Special Equipment Co Ltd filed Critical Henan Jari Special Equipment Co Ltd
Priority to CN201910462043.4A priority Critical patent/CN110081308A/en
Publication of CN110081308A publication Critical patent/CN110081308A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • 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
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/054—Size medium (>1 m3)
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/033—Small pressure, e.g. for liquefied gas
    • 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
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • F17C2260/042—Reducing risk of explosion
    • 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
    • F17C2270/00—Applications
    • F17C2270/05—Applications for industrial use

Abstract

The invention discloses a kind of LNG unloading units convenient for taking, including LNG transport vehicle, LNG low temperature loading tank, immersed pump, LNG cryogenic storage tank, induction type liquid level meter, export exhaust valve, safety valve, strainer valve, heat exchanger and output tapping valve, LNG transport vehicle side is equipped with LNG low temperature loading tank, LNG low temperature loading tank end top is equipped with natural gas outlet valve, appendix is connected in natural gas outlet valve, the low temperature loading tank end LNG bottom below natural gas outlet valve is equipped with LNG liquid valve door, the beneficial effects of the present invention are: the present invention can prevent LNG expanded by heating during unloading, lead to that LNG low-temperature storage pressure inside the tank is excessive and causes danger, it can be observed by induction type liquid level meter inside monitoring LNG cryogenic storage tank after the completion of unloading LNG liquid level and its capacity, while output exhaust valve and output tapping valve, which is arranged, takes natural gas and the more convenient distribution of LNG in LNG cryogenic storage tank.

Description

A kind of LNG unloading unit convenient for taking
Technical field
It unloads technical field of structures the present invention relates to LNG, specially a kind of LNG unloading unit convenient for taking.
Background technique
Traditional LNG is difficult to prevent LNG expanded by heating during unloading when unloading, and leads to LNG cryogenic storage tank internal pressure Power is excessive and causes danger, and LNG liquid level and its appearance inside monitoring LNG cryogenic storage tank can not be also observed after the completion of unloading Amount, it is inconvenient for use, while the later period is inconvenient to distribute and takes.
Summary of the invention
The purpose of the present invention is to provide a kind of LNG unloading units convenient for taking, to solve to mention in above-mentioned background technique Out the problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of LNG unloading unit convenient for taking, including LNG transport vehicle, LNG low temperature loading tank, immersed pump, LNG cryogenic storage tank, induction type liquid level meter, output exhaust valve, safety valve, Strainer valve, heat exchanger and output tapping valve, LNG transport vehicle side is equipped with LNG low temperature loading tank, the LNG low temperature It loads tank end top and natural gas outlet valve is installed, appendix is connected in the natural gas outlet valve, it is described natural The low temperature loading tank end LNG bottom below gas outlet valve is equipped with LNG liquid valve door, connects on the LNG liquid valve door There is perfusion tube, the infusion pipe end is equipped with immersed pump, and one side bottom of immersed pump is equipped with immersed pump entrance, the latent liquid Immersed pump outlet is installed, the perfusion tube is connect by immersed pump entrance with immersed pump, the immersed pump at the top of the pump other side Side is equipped with LNG cryogenic storage tank, and mounting table is fixed on by front shoe in the LNG cryogenic storage tank leading portion outside, institute It states and mounting table is fixed on by rear fixed plate on the outside of LNG cryogenic storage tank back segment, induction is installed at the top of the rear fixed plate Formula liquidometer, induction type liquid level meter end passes through LNG low-temperature storage tank top and is located inside LNG cryogenic storage tank, described It is connected by appendix with natural gas air intake valve between one lateral roof of LNG low temperature loading tank and LNG cryogenic storage tank, the day LNG liquid flowing valve, the immersed pump and LNG cryogenic storage tank are installed in the LNG cryogenic storage tank prevented under right gas air intake valve Between exported by immersed pump and connect with LNG liquid flowing valve, the immersed pump exports and passes through perfusion tube between LNG liquid flowing valve Connection, LNG cryogenic storage tank other side top connect gas-guide tube, and connection output exhaust valve, described to lead on the gas-guide tube It is located at output exhaust valve side connection safety valve on tracheae, connects on the gas-guide tube between the gas-guide tube and LNG cryogenic storage tank Integrated pipe is connect, pressure regulator valve, the comprehensive bottom of the tube connection catheter fixes sleeve and catheter, institute are installed on the integrated pipe It states catheter fixes sleeve to be installed in LNG cryogenic storage tank, the catheter top is equipped with output tapping valve, the drain Strainer valve is installed on catheter between pipe and output tapping valve, liquid is installed on the catheter of the strainer valve side Valve, the liquid valve and output tapping valve between catheter on the outside of install heat exchanger, the catheter pass through heat exchanger with it is defeated Tapping valve connects out.
Preferably, the natural gas outlet valve and natural gas air intake valve are stainless steel cooling gas check valve.
Preferably, the immersed pump bottom is equipped with immersed pump firm banking, the immersed pump is fixed by immersed pump Pedestal is fixed on mounting table.
Preferably, being equipped with low temperature pump room inside the immersed pump.
Preferably, being equipped with exhaust hook gauge on the output exhaust valve.
Preferably, being equipped with drain hook gauge on the output tapping valve.
Preferably, the LNG liquid valve door and LNG liquid flowing valve are RD high pressure check valve.
Preferably, the temperature inside the LNG cryogenic storage tank is -140 ± 5 DEG C.
Compared with prior art, the beneficial effects of the present invention are: after LNG transport vehicle is stopped unloading place to LNG, by gas transmission Pipe LNG cryogenic storage tank is respectively connected between natural gas outlet valve and natural gas air intake valve, and passes through two LNG low temperature The outlet of tank immersed pump is loaded respectively to connect LNG liquid valve door with immersed pump entrance and immersed pump outlet with LNG liquid flowing valve, Immersed pump and LNG liquid valve door and natural gas outlet valve are opened, the natural gas of LNG low temperature loading tank inner top is by day at that time Right gas outlet valve export, and entered in LNG cryogenic storage tank by LNG low temperature loading tank LNG cryogenic storage tank, and LNG is low The LNG that temperature loads pot bottom is exported by LNG liquid valve door, and by entering LNG low-temperature storage after the low temperature pump room in immersed pump Tank internal reservoir prevents LNG expanded by heating during unloading, and causes LNG low-temperature storage pressure inside the tank excessive and causes danger, The LNG liquid level and its capacity inside monitoring LNG cryogenic storage tank can be observed after the completion of unloading by induction type liquid level meter, together When setting output exhaust valve and exporting tapping valve takes natural gas in LNG cryogenic storage tank and the more convenient distribution of LNG.
Detailed description of the invention
Detailed description will be given by the following detailed implementation and drawings by the present invention for ease of explanation,.
Fig. 1 is overall structure figure of the invention.
In figure: 1, LNG transport vehicle；2, LNG low temperature loading tank；3, LNG liquid valve door；4, natural gas outlet valve；5, it dives Liquid pump；6, immersed pump exports；7, LNG liquid flowing valve；8, natural gas air intake valve；9, LNG cryogenic storage tank；10, rear fixed plate； 11, induction type liquid level meter；12, it is vented hook gauge；13, exhaust valve is exported；14, gas-guide tube；15, safety valve；16, pressure regulator valve； 17, integrated pipe；18, catheter fixes sleeve；19, strainer valve；20, liquid valve；21, catheter；22, heat exchanger；23, output row Liquid valve；24, immersed pump firm banking；25, immersed pump entrance；26, perfusion tube；27, low temperature pump room；28, front shoe；29, defeated Tracheae；30, drain hook gauge.
Specific embodiment
As shown in Figure 1, present embodiment uses a kind of following technical scheme: LNG unloading unit convenient for taking, packet Include LNG transport vehicle 1, LNG low temperature loading tank 2, immersed pump 5, LNG cryogenic storage tank 9, induction type liquid level meter 11, output exhaust valve 13, safety valve 15, strainer valve 19, heat exchanger 22 and output tapping valve 23,1 side of LNG transport vehicle is equipped with LNG low temperature Tank 2 is loaded, 2 end top of LNG low temperature loading tank is equipped with natural gas outlet valve 4, in the natural gas outlet valve 4 It is connected with appendix 29, the 2 end bottom of LNG low temperature loading tank of 4 lower section of natural gas outlet valve is equipped with LNG liquid valve Door 3, perfusion tube 26 is connected on the LNG liquid valve door 3, and 26 end of perfusion tube is equipped with immersed pump 5, the immersed pump 5 One side bottom is equipped with immersed pump entrance 25, and immersed pump outlet 6, the perfusion tube are equipped at the top of 5 other side of immersed pump 26 are connect by immersed pump entrance 25 with immersed pump 5, and 5 side of immersed pump is equipped with LNG cryogenic storage tank 9, the LNG low temperature Mounting table is fixed on by front shoe 28 on the outside of 9 leading portion of holding vessel, after passing through on the outside of 9 back segment of LNG cryogenic storage tank Fixed plate 10 is fixed on mounting table, and induction type liquid level meter 11, the induction type liquid level are equipped at the top of the rear fixed plate 10 It counts 11 ends to be located inside LNG cryogenic storage tank 9 at the top of LNG cryogenic storage tank 9, the LNG low temperature loading tank 2 and LNG It is connected between 9 one lateral roof of cryogenic storage tank by appendix 29 and natural gas air intake valve 8, the natural gas air intake valve 8 LNG liquid flowing valve 7 is installed in anti-LNG cryogenic storage tank 9 down, is passed through between the immersed pump 5 and LNG cryogenic storage tank 9 Immersed pump exports 6 and LNG liquid flowing valve 7 and connects, and is connected between the immersed pump outlet 6 and LNG liquid flowing valve 7 by perfusion tube 26 It connects, gas-guide tube 14 is connected at the top of 9 other side of LNG cryogenic storage tank, connection output exhaust valve 13, institute on the gas-guide tube 14 It states and is located at output 13 side connection safety valve 15 of exhaust valve on gas-guide tube 14, between the gas-guide tube 14 and LNG cryogenic storage tank 9 Gas-guide tube 14 on connect integrated pipe 17, pressure regulator valve 16 is installed, 17 bottom of the integrated pipe connection is led on the integrated pipe 17 Liquid pipe fixes sleeve 18 and catheter 21, the catheter fixes sleeve 18 are installed in LNG cryogenic storage tank 9, the drain 21 top of pipe is equipped with output tapping valve 23, is equipped on the catheter 21 between the catheter 21 and output tapping valve 23 Trap valve 19 is equipped with liquid valve 20, the liquid valve 20 and output tapping valve 23 on the catheter 21 of 19 side of strainer valve Between catheter 21 on the outside of install heat exchanger 22, the catheter 21 pass through heat exchanger 22 with export tapping valve 23 connect, institute State the model JT-MRG03-01 of heat exchanger 22.
Wherein, the natural gas outlet valve 4 and natural gas air intake valve 8 are stainless steel cooling gas check valve, facilitate export The natural gas of 2 inner top of LNG low temperature loading tank.
Wherein, 5 bottom of immersed pump is equipped with immersed pump firm banking 24, and the immersed pump 5 is fixed by immersed pump Pedestal 24 is fixed on mounting table, stabilized structure.
Wherein, low temperature pump room 27 is equipped with inside the immersed pump 5, for storing LNG.
Wherein, exhaust hook gauge 12 is installed on the output exhaust valve 13, facilitates the pressure of observation output exhaust valve 13 Power.
Wherein, drain hook gauge 30 is installed on the output tapping valve 23, facilitates the pressure of observation output tapping valve 23 Power.
Wherein, the LNG liquid valve door 3 and LNG liquid flowing valve 7 are RD high pressure check valve, and air-tightness is good, firm resistance to With, facilitate export LNG low temperature loading tank 2 in bottom LNG.
Wherein, the temperature inside the LNG cryogenic storage tank 9 is -140 ± 5 DEG C, is suitble to the storage to LNG.
Specifically, after the stop of LNG transport vehicle 1 is unloaded place to LNG, appendix 29 is separately connected when using the present invention To between natural gas outlet valve 4 and natural gas air intake valve 8, and by two perfusion tubes 26 respectively by 3 He of LNG liquid valve door Immersed pump entrance 25 and immersed pump outlet 6 and LNG liquid flowing valve 7 connect, and open immersed pump 5 and LNG liquid valve door 3 and day Right gas outlet valve 4, the natural gas of 2 inner top of LNG low temperature loading tank is exported by natural gas outlet valve 4 at that time, and by defeated Tracheae 29 enters in LNG cryogenic storage tank 9, and the LNG of 2 bottom of LNG low temperature loading tank is exported by LNG liquid valve door 3, and is passed through Enter 9 internal reservoir of LNG cryogenic storage tank after low temperature pump room 27 in immersed pump 5, prevents LNG to be heated during unloading swollen It is swollen, cause in LNG cryogenic storage tank 9 pressure excessive and cause danger, can be observed by induction type liquid level meter 11 after the completion of unloading The LNG liquid level and its capacity inside LNG cryogenic storage tank 9 are monitored, while output exhaust valve 13 and output tapping valve are set 23 take natural gas in LNG cryogenic storage tank 9 and the more convenient distribution of LNG, wherein natural gas outlet valve 4 and natural Gas air intake valve 8 is stainless steel cooling gas check valve, facilitates the natural gas of export 2 inner top of LNG low temperature loading tank；5 bottom of immersed pump Portion is equipped with immersed pump firm banking 24, and immersed pump 5 is fixed on mounting table, stabilized structure by immersed pump firm banking 24； Low temperature pump room 27 is equipped with inside immersed pump 5, for storing LNG；Exhaust hook gauge 12 is installed on output exhaust valve 13, it is convenient The pressure of observation output exhaust valve 13；Drain hook gauge 30 is installed on output tapping valve 23, facilitates observation output tapping valve 23 pressure；LNG liquid valve door 3 and LNG liquid flowing valve 7 are RD high pressure check valve, and air-tightness is good, sturdy and durable, are conveniently led Out in LNG low temperature loading tank 2 bottom LNG；Temperature inside LNG cryogenic storage tank 9 is -140 ± 5 DEG C, is suitble to the storage to LNG It deposits.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, the technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention, the claimed scope of the invention by appended claims and its Equivalent thereof.

Claims (8)

1. a kind of LNG unloading unit convenient for taking, including LNG transport vehicle (1), LNG low temperature loading tank (2), immersed pump (5), LNG cryogenic storage tank (9), induction type liquid level meter (11), output exhaust valve (13), safety valve (15), strainer valve (19), heat exchanger (22) and tapping valve (23) being exported, which is characterized in that LNG transport vehicle (1) side is equipped with LNG low temperature loading tank (2), LNG low temperature loading tank (2) end top is equipped with natural gas outlet valve (4), is connected on the natural gas outlet valve (4) It is connected to appendix (29), LNG low temperature loading tank (2) end bottom below the natural gas outlet valve (4) is equipped with LNG and goes out Fluid valve (3) is connected with perfusion tube (26) on the LNG liquid valve door (3), and perfusion tube (26) end is equipped with immersed pump (5), (5) one side bottom of immersed pump is equipped with immersed pump entrance (25), is equipped at the top of immersed pump (5) other side latent Liquid pump exports (6), and the perfusion tube (26) is connect by immersed pump entrance (25) with immersed pump (5), immersed pump (5) side Equipped with LNG cryogenic storage tank (9), erecting bed is fixed on by front shoe (28) on the outside of LNG cryogenic storage tank (9) leading portion Mounting table, the rear fixed plate are fixed on by rear fixed plate (10) in face, LNG cryogenic storage tank (9) the back segment outside (10) top is equipped with induction type liquid level meter (11), and induction type liquid level meter (11) end is pushed up across LNG cryogenic storage tank (9) Portion is located inside LNG cryogenic storage tank (9), between (9) one lateral roof of the LNG low temperature loading tank (2) and LNG cryogenic storage tank It is connected by appendix (29) and natural gas air intake valve (8), the LNG low-temperature storage prevented under the natural gas air intake valve (8) It is equipped on tank (9) LNG liquid flowing valve (7), is exported between the immersed pump (5) and LNG cryogenic storage tank (9) by immersed pump (6) it is connected with LNG liquid flowing valve (7), between the immersed pump outlet (6) and LNG liquid flowing valve (7) even by perfusion tube (26) It connects, connects gas-guide tube (14) at the top of LNG cryogenic storage tank (9) other side, connection output exhaust on the gas-guide tube (14) Valve (13), is located at output exhaust valve (13) side connection safety valve (15) on the gas-guide tube (14), the gas-guide tube (14) with Integrated pipe (17) are connected on gas-guide tube (14) between LNG cryogenic storage tank (9), pressure regulator valve is installed on the integrated pipe (17) (16), integrated pipe (17) bottom connection catheter fixes sleeve (18) and catheter (21), the catheter fixes sleeve (18) it is installed on LNG cryogenic storage tank (9), catheter (21) top is equipped with output tapping valve (23), the drain It is equipped with strainer valve (19) on catheter (21) between pipe (21) and output tapping valve (23), strainer valve (19) side It is equipped on catheter (21) liquid valve (20), the catheter (21) between the liquid valve (20) and output tapping valve (23) is outside Heat exchanger (22) are installed in side, and the catheter (21) passes through heat exchanger (22) and connect with output tapping valve (23).
2. a kind of LNG unloading unit convenient for taking according to claim 1, it is characterised in that: the natural gas outlet Valve (4) and natural gas air intake valve (8) are stainless steel cooling gas check valve.
3. a kind of LNG unloading unit convenient for taking according to claim 1, it is characterised in that: immersed pump (5) bottom Portion is equipped with immersed pump firm banking (24), and the immersed pump (5) is fixed on mounting table by immersed pump firm banking (24).
4. a kind of LNG unloading unit convenient for taking according to claim 1, it is characterised in that: in the immersed pump (5) Portion is equipped with low temperature pump room (27).
5. a kind of LNG unloading unit convenient for taking according to claim 1, it is characterised in that: the output exhaust valve (13) exhaust hook gauge (12) is installed on.
6. a kind of LNG unloading unit convenient for taking according to claim 1, it is characterised in that: the output tapping valve (23) drain hook gauge (30) are installed on.
7. a kind of LNG unloading unit convenient for taking according to claim 1, it is characterised in that: the LNG liquid valve door (3) and LNG liquid flowing valve (7) is RD high pressure check valve.
8. a kind of LNG unloading unit convenient for taking according to claim 1, it is characterised in that: the LNG low-temperature storage The internal temperature of tank (9) is -140 ± 5 DEG C.
CN201910462043.4A 2019-05-30 2019-05-30 A kind of LNG unloading unit convenient for taking Pending CN110081308A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0914597A (en) * 1995-06-26 1997-01-17 Chiyoda Corp Reception piping system for low temperature liquefied gas
CN105927852A (en) * 2016-07-15 2016-09-07 程同刚 Natural gas unloading method
CN205716405U (en) * 2016-05-12 2016-11-23 自贡东方通用压缩机有限公司 The loading system at station is built jointly for LNG filling station and LNG gasification station
CN205877703U (en) * 2016-07-13 2017-01-11 天津华迈燃气装备股份有限公司 Liquefied natural gas immersed pump unloading vehicle device
WO2017031986A1 (en) * 2015-08-24 2017-03-02 自贡通达机器制造有限公司 Lng fueling station employing bog energy storage and pressure differential
CN206459008U (en) * 2016-12-13 2017-09-01 北京燃气绿源达清洁燃料有限公司 Flash recovery device for steam
CN210035060U (en) * 2019-05-30 2020-02-07 河南查瑞特种设备有限公司 LNG device of unloading convenient to take

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0914597A (en) * 1995-06-26 1997-01-17 Chiyoda Corp Reception piping system for low temperature liquefied gas
WO2017031986A1 (en) * 2015-08-24 2017-03-02 自贡通达机器制造有限公司 Lng fueling station employing bog energy storage and pressure differential
CN205716405U (en) * 2016-05-12 2016-11-23 自贡东方通用压缩机有限公司 The loading system at station is built jointly for LNG filling station and LNG gasification station
CN205877703U (en) * 2016-07-13 2017-01-11 天津华迈燃气装备股份有限公司 Liquefied natural gas immersed pump unloading vehicle device
CN105927852A (en) * 2016-07-15 2016-09-07 程同刚 Natural gas unloading method
CN206459008U (en) * 2016-12-13 2017-09-01 北京燃气绿源达清洁燃料有限公司 Flash recovery device for steam
CN210035060U (en) * 2019-05-30 2020-02-07 河南查瑞特种设备有限公司 LNG device of unloading convenient to take

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