CN111006125A - Detachable LNG vehicle-mounted gas cylinder supercharging device - Google Patents
Detachable LNG vehicle-mounted gas cylinder supercharging device Download PDFInfo
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- CN111006125A CN111006125A CN201911300745.9A CN201911300745A CN111006125A CN 111006125 A CN111006125 A CN 111006125A CN 201911300745 A CN201911300745 A CN 201911300745A CN 111006125 A CN111006125 A CN 111006125A
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- 238000010438 heat treatment Methods 0.000 claims abstract description 65
- 239000010410 layer Substances 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 239000011229 interlayer Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 131
- 239000003949 liquefied natural gas Substances 0.000 claims description 80
- 239000007788 liquid Substances 0.000 claims description 39
- 238000009413 insulation Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- 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
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
-
- 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
- F17C13/005—Details of vessels or of the filling or discharging of vessels for medium-size and small storage 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
- 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
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature 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
- 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
- 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
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
-
- 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
- F17C2201/03—Orientation
- F17C2201/035—Orientation with substantially horizontal main axis
-
- 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
- F17C2201/056—Small (<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
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
- F17C2270/0178—Cars
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a detachable LNG vehicle-mounted gas cylinder supercharging device, wherein a first mounting hole is formed in the lower part of any outer sealing head of an outer shell of a horizontally arranged LNG vehicle-mounted gas cylinder, a second mounting hole is formed in the lower part of an inner sealing head of an inner container which is positioned on the same side as the first mounting hole, the front end of a double-layer sleeve filled with a heat insulating layer in a middle interlayer sequentially penetrates through the first mounting hole and the second mounting hole in a sealing manner and then extends into the inner container, a connector is fixedly arranged at the front end of the double-layer sleeve positioned in the inner container, a power signal adapter is fixedly arranged at the rear end of the double-layer sleeve positioned outside the outer shell, and a heating device is arranged in the double-layer sleeve and comprises: the heating element is fixed at the front end of the supporting piece and provided with a temperature sensor, and a power line of the heating element and a signal line of the temperature sensor are connected to the power signal adapter. The structure has the advantages of stable and reliable pressurization, convenient maintenance and replacement of the heating device and the like.
Description
Technical Field
The invention relates to a technology for supercharging an LNG (liquefied natural gas) vehicle-mounted gas cylinder, in particular to a detachable LNG vehicle-mounted gas cylinder supercharging device.
Background
Liquefied natural gas (LNG for short) is a recognized clean energy in the world at present, has the advantages of high heat value, sufficient combustion, low price, good transportation economy, good safety and the like, and is deeply loved by wide users. Liquefied natural gas vehicles using LNG as a fuel have been put into operation, and LNG vehicle-mounted gas cylinders have also received much attention as a key part of a vehicle-mounted fuel system for liquefied natural gas vehicles.
The on-vehicle gas cylinder of LNG is in the use, and along with the decline of liquid level in the inner bag, pressure in the inner bag also can descend, can lead to gas cylinder pressure not enough when the liquid level descends certain position in the inner bag, therefore needs carry out the pressure boost to the on-vehicle gas cylinder of LNG. The existing LNG vehicle-mounted gas cylinder supercharging device achieves the purpose of supercharging by arranging the supercharging pipe with the fins exposed in the external environment, and liquid in the inner container absorbs heat and is gasified into gas when passing through the supercharging pipe and then returns to the inner container, so that the supercharging process is completed. However, the above-mentioned increase process is greatly influenced by the external environment temperature, so that it is difficult to ensure the stability of the pressure in the inner container.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the detachable LNG vehicle-mounted gas cylinder supercharging device is stable and reliable in supercharging and convenient to maintain and replace for the heating device.
In order to solve the problems, the invention adopts the technical scheme that: a detachable LNG on-vehicle gas cylinder supercharging device, include: the LNG vehicle-mounted gas cylinder is horizontally arranged and comprises an outer shell and a liner, a first mounting hole is formed in the lower portion of any outer sealing head of the outer shell, a second mounting hole is formed in the lower portion of an inner sealing head of the liner, the lower portion of the inner sealing head of the liner is located on the same side as the first mounting hole, the front end of a double-layer sleeve sequentially penetrates through the first mounting hole and the second mounting hole in a sealing mode and then extends into the liner, the double-layer sleeve is fixedly connected with the outer sealing head of the first mounting hole and the inner sealing head of the second mounting hole respectively, and a heat insulating layer is filled in a middle interlayer of the double-layer sleeve; the fixed joint that is provided with in the double-deck sleeve pipe front end that is located the inner bag, the fixed power signal adapter that is provided with in the double-deck sleeve pipe rear end that is located the outer casing, be provided with heating device in the double-deck sleeve pipe, heating device include: the support piece and be fixed in the heating element of taking temperature sensor of support piece front end, when support piece alternates in double-deck sleeve pipe, take temperature sensor's heating element to stretch into and connect the inner chamber, heating element's power cord and temperature sensor's signal line are connected on power signal adapter.
Further, in the detachable LNG vehicle-mounted gas cylinder supercharging device, a gas collection tank is fixedly arranged on the inner side wall below the inner container of the LNG vehicle-mounted gas cylinder, and the front end of the double-layer sleeve penetrates through a through hole in the side wall of the gas collection tank in a sealing manner and then extends into the inner cavity of the gas collection tank; at least one liquid inlet hole is formed in the side wall of the gas collection tank below the double-layer sleeve along the circumferential direction; the gas collecting tank is characterized in that a connecting hole communicated with the inner cavity of the gas collecting tank is formed in the top of the gas collecting tank, the gas guide pipe is vertically arranged in the inner container, a pipe orifice at the lower end of the gas guide pipe is communicated with the connecting hole in the top of the gas collecting tank in a sealing manner, a pipe orifice at the upper end of the gas guide pipe is fixedly connected with the inner side wall of the upper portion of the inner container, and at least one gas outlet hole is formed in.
Further, the detachable on-vehicle gas cylinder supercharging device of LNG, wherein, the tank bottoms of gas collecting tank opens and forms and opens the mouth, opens the inside wall fixed connection of mouth and inner bag.
Further, aforementioned detachable on-vehicle gas cylinder supercharging device of LNG, wherein, one of them feed liquor hole and gas collecting tank lateral wall through-hole link up and form the perforating hole of arch door frame shape.
Further, in the detachable LNG vehicle-mounted gas cylinder supercharging device, the double-layer sleeve is composed of an outer sleeve and an inner sleeve, the inner sleeve is inserted into the outer sleeve, and a middle interlayer filled with a heat insulation layer is formed in a gap between the inner sleeve and the outer sleeve; outer tube front end and joint fixed connection, outside the outer tube rear end stretches out the inner bag after passing the second mounting hole in a sealed manner, interior sleeve pipe front end and joint fixed connection, interior sleeve pipe rear end stretches out outside the shell after passing first mounting hole in a sealed manner, and power signal adapter fixed connection is in interior sleeve pipe rear end, and heating device sets up in interior sleeve pipe and joint inner chamber.
Further, aforementioned detachable on-vehicle gas cylinder supercharging device of LNG, wherein, the heat insulation layer extends after stretching out from middle intermediate layer rear end and covers on interior sleeve pipe.
Further, the detachable on-vehicle gas cylinder supercharging device of LNG, wherein, the axis of first mounting hole and the axis of second mounting hole all are parallel with the axis of inner bag.
Further, in the detachable LNG vehicle-mounted gas cylinder pressurization device, a heat conduction element is fixedly arranged on the joint.
Further, aforementioned detachable LNG vehicle-mounted gas cylinder supercharging device, wherein, the heat conduction element includes: the heat conducting sleeve is sleeved on the joint, and at least one heat conducting sheet is arranged on the heat conducting sleeve; the heat conducting fins are vertically and uniformly arranged on the side wall of the lower side of the heat conducting sleeve at intervals, and are parallel to each other.
Further, aforementioned detachable on-vehicle gas cylinder supercharging device of LNG, wherein, all seted up a plurality of first through-holes that link up on every heat-conducting strip.
Further, the detachable LNG vehicle-mounted gas cylinder supercharging device is characterized in that a control device is arranged outside the LNG vehicle-mounted gas cylinder, and a power line of a heating element and a signal line of a temperature sensor are connected with the control device through a power signal adapter; a pressure sensor for detecting the pressure of the inner container is also arranged in the LNG vehicle-mounted gas cylinder, a signal line of the pressure sensor is connected with the control device, and an ignition switch of the liquefied natural gas vehicle is connected with the control device; the control device can control the heating device to be electrified and heated or not to be electrified according to the state of the ignition switch, the pressure value detected by the pressure sensor and the temperature value detected by the temperature sensor, and the control device comprises the following specific steps:
when an ignition switch of the liquefied natural gas automobile is in an un-started state, the control device controls the heating device to be powered off, low-temperature liquid in the inner container of the LNG vehicle-mounted gas cylinder is not heated, and the supercharging device stops working;
after the ignition switch is started by a key or started without the key, the control device judges in real time according to the pressure value detected by the pressure sensor and the temperature value detected by the temperature sensor:
if the pressure value detected by the pressure sensor exceeds the set pressure value of the control device, the control device controls the heating device to be powered off, the low-temperature liquid in the inner container of the LNG vehicle-mounted gas cylinder is not heated, and the supercharging device stops working;
if the temperature value detected by the temperature sensor exceeds the set temperature value of the control device, the control device controls the heating device to be powered off, the low-temperature liquid in the inner container of the LNG vehicle-mounted gas cylinder is not heated, and the supercharging device stops working;
if the pressure value detected by the pressure sensor and the temperature value detected by the temperature sensor do not exceed the set value of the control device, the control device controls the heating device to be powered on, the low-temperature liquid in the inner container of the LNG vehicle-mounted gas cylinder is heated, and the supercharging device operates.
The invention has the advantages that ① does not need to additionally arrange a pressure increasing pipe with fins, the structure is compact, the pressure increasing process is not influenced by the temperature of the external environment, the pressure increasing is stable and reliable, when a ② heating element and a temperature sensor break down, the heating device can be quickly maintained and replaced by only being pulled out from the rear end of the double-layer sleeve, the maintenance and the replacement are very convenient, and the maintenance and the replacement cost are reduced.
Drawings
Fig. 1 is a schematic structural diagram of a detachable LNG vehicle-mounted gas cylinder pressurization device according to the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a of fig. 1.
Fig. 3 is a schematic view of the installation structure of the double-walled sleeve and the heating device.
Fig. 4 is another schematic structural diagram of the detachable LNG vehicle-mounted gas cylinder pressurization device according to the present invention.
FIG. 5 is a schematic view showing the installation structure of the gas collecting tank, the double-walled sleeve and the heating device in FIG. 4.
FIG. 6 is a schematic view showing the structure of each inlet hole of the gas collection tank of FIG. 5.
FIG. 7 is another schematic view of the liquid inlet holes of the gas collection tank of FIG. 5.
Fig. 8 is a schematic view of the structure of fig. 5 with the heat conducting element added.
Fig. 9 is a schematic structural view of the heat conductive member of fig. 8.
Fig. 10 is a schematic view of the structure in the right-hand direction of fig. 9.
Fig. 11 is another structural schematic diagram of the heat conducting element.
Fig. 12 is a schematic view of the structure in the right-hand direction of fig. 11.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
Example one
As shown in fig. 1 and fig. 2, the detachable LNG vehicle-mounted gas cylinder pressurization device in this embodiment includes: on-vehicle gas cylinder of LNG 1, on-vehicle gas cylinder of LNG 1 that crouches and set up includes shell body 12 and inner bag 11. A first mounting hole 121 is formed in the lower portion of any outer seal head 120 of the outer shell 12, a second mounting hole 111 is formed in the lower portion of an inner seal head 110 of the inner container 11 located on the same side as the first mounting hole 121, the front end of the double-layer sleeve 2 sequentially penetrates through the first mounting hole 121 and the second mounting hole 111 in a sealing manner and then extends into the inner container 11, the double-layer sleeve 2 is respectively and fixedly connected with the outer seal head 120 of the first mounting hole 121 and the inner seal head 110 of the second mounting hole 111, and a heat insulating layer 22 is filled in a middle interlayer of the double-layer sleeve 2. In actual manufacturing, the first mounting hole 121 is usually disposed on the outer sealing head 120 with a bottle mouth dispenser, and the axis of the first mounting hole 121 and the axis of the second mounting hole 111 are both parallel to the axis of the liner 11.
As shown in fig. 3, a connector 3 is fixedly arranged at the front end of the double-layer sleeve 2 positioned in the inner container 11, a power signal adapter 4 is fixedly arranged at the rear end of the double-layer sleeve 2 positioned outside the outer shell 12, and a heating device 5 is arranged in the double-layer sleeve 2, wherein the heating device 5 comprises: the support 51 and the heating element 52 with the temperature sensor fixed at the front end of the support 51, when the support 51 is inserted into the double-layer sleeve 2, the heating element 51 with the temperature sensor extends into the joint inner cavity, and the power line of the heating element and the signal line of the temperature sensor are connected to the power signal adapter 4.
As shown in fig. 2 and 3, the double-walled casing 2 includes an outer casing 21 and an inner casing 23, the inner casing 23 is inserted into the outer casing 21, and an intermediate layer filled with the heat-insulating layer 22 is formed in a gap between the inner casing 23 and the outer casing 21. The front end of the outer sleeve 21 is fixedly connected with the joint 3, and the rear end of the outer sleeve 21 passes through the second mounting hole 111 in a sealing manner and then extends out of the inner container 11. The front end of the inner sleeve 23 is fixedly connected with the connector 3, the rear end of the inner sleeve 23 hermetically penetrates through the first mounting hole 121 and then extends out of the outer shell 12, the power signal adapter 4 is fixedly connected to the rear end of the inner sleeve 23, and the heating device 5 is arranged in the inner cavity of the inner sleeve 23 and the connector.
In order to better ensure the heat insulation performance of the LNG vehicle-mounted gas cylinder, the heat insulation layer 22 extends from the rear end of the middle interlayer to cover the inner sleeve 23.
In order to allow better conduction of the heat generated by the heating device 5 into the cryogenic liquid, a heat-conducting element 8 is fixedly arranged on the connection 3, as shown in fig. 8. As shown in fig. 9 and 10, the heat conducting member 8 described in the present embodiment includes: the heat conducting sleeve 81 is sleeved on the joint 3, at least one heat conducting sheet 82 is arranged on the heat conducting sleeve 81, the heat conducting sheets 82 are vertically and uniformly arranged on the side wall of the lower side of the heat conducting sleeve 81 at intervals, and the heat conducting sheets 82 are parallel to each other. In actual manufacturing, each heat conduction sheet 82 is parallel to the axis of the heat conduction sleeve 81.
In order to make the low-temperature liquid smoothly contact with the heat-conducting fins 82 and make the gas generated by the endothermic gasification smoothly escape, as shown in fig. 11 and 12, each heat-conducting fin 82 is provided with a plurality of first through holes 820.
In order to monitor the supercharging device in real time and enable the LNG vehicle-mounted gas cylinder 1 to be used more safely, a control device is arranged outside the LNG vehicle-mounted gas cylinder 1, and a power line of a heating element and a signal line of a temperature sensor are connected with the control device through a power signal adapter; a pressure sensor for detecting the pressure of the inner container is also arranged in the LNG vehicle-mounted gas cylinder, a signal line of the pressure sensor is connected with the control device, and an ignition switch of the liquefied natural gas vehicle is connected with the control device; the control device can control the heating device to be electrified and heated or not to be electrified according to the state of the ignition switch, the pressure value detected by the pressure sensor and the temperature value detected by the temperature sensor.
The working principle of the LNG vehicle-mounted gas cylinder supercharging device in the embodiment is as follows:
when an ignition switch of the liquefied natural gas automobile is in an un-started state, the control device controls the heating device 5 to be powered off, at the moment, the heating device 5 does not heat the low-temperature liquid in the inner container 11 of the LNG vehicle-mounted gas cylinder 2, and namely, the supercharging device stops working after the automobile stops.
After the ignition switch is started by a key or started without the key, the control device judges in real time according to the pressure value detected by the pressure sensor and the temperature value detected by the temperature sensor:
if the pressure value detected by the pressure sensor exceeds the set pressure value of the control device, the control device controls the heating device 5 to be powered off, the low-temperature liquid in the inner container 11 of the LNG vehicle-mounted gas cylinder 1 is not heated at the moment, and the supercharging device stops working;
if the temperature value detected by the temperature sensor exceeds the set temperature value of the control device, the control device controls the heating device 5 to be powered off, the low-temperature liquid in the inner container 11 of the LNG vehicle-mounted gas cylinder 1 is not heated at the moment, and the supercharging device stops working;
if the pressure value detected by the pressure sensor and the temperature value detected by the temperature sensor do not exceed the set value of the control device, the control device controls the heating device 5 to be powered on, at the moment, the heating device 5 heats the low-temperature liquid in the inner container 11 of the LNG vehicle-mounted gas cylinder 1, and the supercharging device operates.
The LNG vehicle-mounted gas cylinder supercharging device with the structure does not need to additionally arrange a supercharging pipe with fins, and is compact in structure; in addition, set up heating device 5 in the inner bag 11 of the on-vehicle gas cylinder 1 of LNG, the pressure boost process is not influenced by external environment temperature, and the pressure boost is reliable and stable.
When the heating element and the temperature sensor are in failure, the heating device 5 can be quickly maintained and replaced only by drawing out the heating device from the rear end of the double-layer sleeve, so that the maintenance and the replacement are very convenient, and the maintenance and the replacement cost are reduced.
Example two
As shown in fig. 4 and 5, in this embodiment, on the basis of the first embodiment, a gas collection tank 6 is further fixedly disposed on the inner side wall below the inner container 11 of the LNG vehicle-mounted gas cylinder, and the front end of the double-layer sleeve 2 penetrates through a through hole 62 in the side wall of the gas collection tank in a sealing manner and then extends into the inner cavity of the gas collection tank. At least one liquid inlet hole 60 is arranged on the side wall of the gas collection tank below the double-layer sleeve 2 along the circumferential direction. The top of the gas collecting tank 6 is provided with a connecting hole 61 communicated with the inner cavity of the gas collecting tank, the gas guide pipe 7 is vertically arranged in the inner container 11, the pipe orifice at the lower end of the gas guide pipe 7 is communicated with the connecting hole 61 at the top of the gas collecting tank 6 in a sealing way, the pipe orifice at the upper end of the gas guide pipe 6 is fixedly connected with the inner side wall above the inner container 11, and the side wall at the upper part of the gas guide pipe 7 is provided with at least one gas outlet hole 71.
The gas collecting tank bottom can be set to be a closed tank bottom, and also can be set to be an open opening, and when the gas collecting tank bottom is an open opening, the open opening is fixedly connected with the inner side wall of the inner container 11.
Each liquid inlet hole 61 arranged on the gas collecting tank can be designed according to actual requirements. The present embodiment gives two arrangements of the respective liquid inlet holes 61, but the arrangement of the respective liquid inlet holes 61 is not limited to the given two arrangements.
The first arrangement of each liquid inlet hole 60 is as follows: as shown in fig. 5 and 6, one of the liquid inlet holes 60 and the gas collection tank sidewall through hole 62 are formed as an arched door frame-shaped through hole 601.
The second arrangement of each liquid inlet hole 60 is as follows: as shown in fig. 7, the liquid inlet holes 60 are arranged in a layered manner: the liquid inlet holes 60 of each layer are uniformly arranged at intervals, and the liquid inlet holes 60 of each row are also uniformly arranged at intervals.
The working principle of the LNG vehicle-mounted gas cylinder supercharging device in the embodiment is as follows:
when an ignition switch of the liquefied natural gas automobile is in an un-started state, the control device controls the heating device 5 to be powered off, at the moment, the heating device 5 does not heat the low-temperature liquid in the inner cavity of the gas collecting tank, and the supercharging device stops working after the automobile stops.
After the ignition switch is started by a key or started without the key, the control device judges in real time according to the pressure value detected by the pressure sensor and the temperature value detected by the temperature sensor:
if the pressure value detected by the pressure sensor exceeds the set pressure value of the control device, the control device controls the heating device 5 to be powered off, at the moment, the heating device 5 does not heat the low-temperature liquid in the inner cavity of the gas collection tank, and the supercharging device stops working;
if the temperature value detected by the temperature sensor exceeds the set temperature value of the control device, the control device controls the heating device 5 to be powered off, at the moment, the heating device 5 does not heat the low-temperature liquid in the inner cavity of the gas collection tank, and the supercharging device stops working;
if the pressure value detected by the pressure sensor and the temperature value detected by the temperature sensor do not exceed the set value of the control device, the control device controls the heating device 5 to be powered on, at the moment, the heating device 5 heats the low-temperature liquid in the inner cavity of the gas collection tank, and the supercharging device operates.
When the supercharging device operates, the heating device 5 heats the low-temperature liquid in the inner cavity of the gas collection tank, the low-temperature liquid absorbs heat and is gasified into gas, and the gas enters the gas phase space of the inner container 11 through the gas guide pipe 7 and the gas outlet holes 71 to realize supercharging.
The LNG vehicle-mounted gas cylinder supercharging device with the structure has the following advantages:
the additional arrangement of a pressure increasing pipe with fins is not needed, and the structure is compact; in addition, set up heating device 5 in the inner bag 11 of the on-vehicle gas cylinder 1 of LNG, the pressure boost process is not influenced by external environment temperature, and the pressure boost is reliable and stable.
When the heating element and the temperature sensor are in failure, the heating device 5 can be quickly maintained and replaced only by drawing out the heating device from the rear end of the double-layer sleeve, so that the maintenance and the replacement are very convenient, and the maintenance and the replacement cost are reduced.
In addition, each air outlet 71 is arranged at the upper part of the gas conduit 7, and the gas which is gasified by absorbing heat of the low-temperature liquid directly enters the gas phase space of the inner container 11 after passing through each air outlet 71, so that the phenomenon of reliquefaction generated when the gasified gas passes through the low-temperature liquid and the influence on the supercharging effect are avoided, and the stability and reliability of supercharging are further improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made in accordance with the technical spirit of the present invention are within the scope of the present invention as claimed.
Claims (11)
1. The utility model provides a detachable on-vehicle gas cylinder supercharging device of LNG, includes: on-vehicle gas cylinder of LNG that crouch set up, the on-vehicle gas cylinder of LNG includes shell body and inner bag, its characterized in that: a first mounting hole is formed in the lower portion of any outer sealing head of the outer shell, a second mounting hole is formed in the lower portion of an inner sealing head of the inner container, the lower portion of the inner sealing head of the inner container is located on the same side as the first mounting hole, the front end of the double-layer sleeve penetrates through the first mounting hole and the second mounting hole in a sealing mode in sequence and then extends into the inner container, the double-layer sleeve is fixedly connected with the outer sealing head of the first mounting hole and the inner sealing head of the second mounting hole respectively, and a heat insulating layer is filled in a middle interlayer of the double-layer sleeve; the fixed joint that is provided with in the double-deck sleeve pipe front end that is located the inner bag, the fixed power signal adapter that is provided with in the double-deck sleeve pipe rear end that is located the outer casing, be provided with heating device in the double-deck sleeve pipe, heating device include: the support piece and be fixed in the heating element of taking temperature sensor of support piece front end, when support piece alternates in double-deck sleeve pipe, take temperature sensor's heating element to stretch into and connect the inner chamber, heating element's power cord and temperature sensor's signal line are connected on power signal adapter.
2. The on-vehicle gas cylinder supercharging device of detachable LNG of claim 1, characterized in that: a gas collecting tank is fixedly arranged on the inner side wall below the inner container of the LNG vehicle-mounted gas cylinder, and the front end of the double-layer sleeve penetrates through a through hole in the side wall of the gas collecting tank in a sealing manner and then extends into the inner cavity of the gas collecting tank; at least one liquid inlet hole is formed in the side wall of the gas collection tank below the double-layer sleeve along the circumferential direction; the gas collecting tank is characterized in that a connecting hole communicated with the inner cavity of the gas collecting tank is formed in the top of the gas collecting tank, the gas guide pipe is vertically arranged in the inner container, a pipe orifice at the lower end of the gas guide pipe is communicated with the connecting hole in the top of the gas collecting tank in a sealing manner, a pipe orifice at the upper end of the gas guide pipe is fixedly connected with the inner side wall of the upper portion of the inner container, and at least one gas outlet hole is formed in.
3. The on-vehicle gas cylinder supercharging device of detachable LNG of claim 2, characterized in that: the tank bottom of the gas collection tank is opened to form an open opening, and the open opening is fixedly connected with the inner side wall of the inner container.
4. The on-vehicle gas cylinder supercharging device of detachable LNG of claim 2 or 3, characterized in that: one of the liquid inlet holes is communicated with the through hole on the side wall of the gas collecting tank to form an arched door frame-shaped through hole.
5. The on-vehicle gas cylinder supercharging device of detachable LNG of claim 1 or 2, characterized in that: the double-layer sleeve consists of an outer sleeve and an inner sleeve, the inner sleeve is inserted in the outer sleeve, and a middle interlayer filled with a heat insulating layer is formed in a gap between the inner sleeve and the outer sleeve; outer tube front end and joint fixed connection, outside the outer tube rear end stretches out the inner bag after passing the second mounting hole in a sealed manner, interior sleeve pipe front end and joint fixed connection, interior sleeve pipe rear end stretches out outside the shell after passing first mounting hole in a sealed manner, and power signal adapter fixed connection is in interior sleeve pipe rear end, and heating device sets up in interior sleeve pipe and joint inner chamber.
6. The on-vehicle gas cylinder supercharging device of detachable LNG of claim 5, characterized in that: the heat insulation layer extends from the rear end of the middle interlayer and then extends backwards to cover the inner sleeve.
7. The on-vehicle gas cylinder supercharging device of detachable LNG of claim 1 or 2, characterized in that: the axis of the first mounting hole and the axis of the second mounting hole are both parallel to the axis of the inner container.
8. The on-vehicle gas cylinder supercharging device of detachable LNG of claim 1 or 2, characterized in that: a heat conducting element is fixedly arranged on the joint.
9. The on-vehicle gas cylinder supercharging device of detachable LNG of claim 8, characterized in that: the heat conducting element comprises: the heat conducting sleeve is sleeved on the joint, and at least one heat conducting sheet is arranged on the heat conducting sleeve; the heat conducting fins are vertically and uniformly arranged on the side wall of the lower side of the heat conducting sleeve at intervals, and are parallel to each other.
10. The on-vehicle gas cylinder supercharging device of detachable LNG of claim 9, characterized in that: a plurality of first through holes which are communicated are formed in each heat conducting sheet.
11. The on-vehicle gas cylinder supercharging device of detachable LNG of claim 1 or 2, characterized in that: a control device is arranged outside the LNG vehicle-mounted gas cylinder, and a power line of the heating element and a signal line of the temperature sensor are connected with the control device through a power signal adapter; a pressure sensor for detecting the pressure of the inner container is also arranged in the LNG vehicle-mounted gas cylinder, a signal line of the pressure sensor is connected with the control device, and an ignition switch of the liquefied natural gas vehicle is connected with the control device; the control device can control the heating device to be electrified and heated or not to be electrified according to the state of the ignition switch, the pressure value detected by the pressure sensor and the temperature value detected by the temperature sensor, and the control device comprises the following specific steps:
when an ignition switch of the liquefied natural gas automobile is in an un-started state, the control device controls the heating device to be powered off, low-temperature liquid in the inner container of the LNG vehicle-mounted gas cylinder is not heated, and the supercharging device stops working;
after the ignition switch is started by a key or started without the key, the control device judges in real time according to the pressure value detected by the pressure sensor and the temperature value detected by the temperature sensor:
if the pressure value detected by the pressure sensor exceeds the set pressure value of the control device, the control device controls the heating device to be powered off, the low-temperature liquid in the inner container of the LNG vehicle-mounted gas cylinder is not heated, and the supercharging device stops working;
if the temperature value detected by the temperature sensor exceeds the set temperature value of the control device, the control device controls the heating device to be powered off, the low-temperature liquid in the inner container of the LNG vehicle-mounted gas cylinder is not heated, and the supercharging device stops working;
if the pressure value detected by the pressure sensor and the temperature value detected by the temperature sensor do not exceed the set value of the control device, the control device controls the heating device to be powered on, the low-temperature liquid in the inner container of the LNG vehicle-mounted gas cylinder is heated, and the supercharging device operates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911300745.9A CN111006125A (en) | 2019-12-17 | 2019-12-17 | Detachable LNG vehicle-mounted gas cylinder supercharging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911300745.9A CN111006125A (en) | 2019-12-17 | 2019-12-17 | Detachable LNG vehicle-mounted gas cylinder supercharging device |
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| CN111006125A true CN111006125A (en) | 2020-04-14 |
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|---|---|---|---|
| CN201911300745.9A Pending CN111006125A (en) | 2019-12-17 | 2019-12-17 | Detachable LNG vehicle-mounted gas cylinder supercharging device |
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Cited By (1)
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|---|---|---|---|---|
| CN111635108A (en) * | 2020-06-19 | 2020-09-08 | 苏州乐宏环保科技有限公司 | Electric heating sludge dryer |
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