CN108087723B - Full-function unattended remote monitoring vaporization pressure regulating system - Google Patents
Full-function unattended remote monitoring vaporization pressure regulating system Download PDFInfo
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- CN108087723B CN108087723B CN201810049962.4A CN201810049962A CN108087723B CN 108087723 B CN108087723 B CN 108087723B CN 201810049962 A CN201810049962 A CN 201810049962A CN 108087723 B CN108087723 B CN 108087723B
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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
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
- F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
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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
- 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
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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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a full-function unattended remote monitoring vaporization pressure regulating system which is characterized in that liquefied natural gas in a gas cylinder is conveyed into a vaporization device through a busbar device to be vaporized, then enters a heat recovery device, is subjected to two-stage pressure regulation through a pressure regulating device and then is subjected to pressure reduction, and finally is conveyed into a terminal client through a metering device and a deodorizing device, and is provided with a low-temperature emergency cut-off valve, an intelligent pressure transmitter, an intelligent temperature transmitter, an intelligent electric heater, an intelligent roots flowmeter, an automatic deodorizing device and a combustible gas detector, and the running condition of equipment can be monitored in real time through a mobile phone. The invention improves the existing liquefied gas vaporization pressure regulating device, realizes 24-hour production without personnel on site, can monitor the running condition of equipment in real time through a mobile phone, improves the safety and efficiency of a gasification station, and reduces the production labor cost.
Description
Technical Field
The invention relates to a full-function unattended remote monitoring vaporization pressure regulating system.
Background
LNG (liquefied natural gas) has become a primary or transitional gas source that currently cannot be supplied by piped natural gas, and is also a supplemental or peak shaving gas source for many cities that use piped natural gas. The LNG vaporization station is a satellite station for receiving, storing and distributing LNG, and is also an intermediate conditioning site for town or gas enterprises to transfer LNG from a manufacturer to a customer. The LNG gasification station is gradually built in a plurality of small and medium cities with developed economy and energy shortage in southeast coast of China by virtue of the advantages of short construction period and capability of rapidly meeting the gas market demand, and becomes a permanent gas supply facility or a transitional gas supply facility before the arrival of the pipeline natural gas.
LNG is transported to a gasification station from the tank wagon, the pressure in the tank wagon is increased by utilizing an LNG unloading pressurizer, and the LNG in the tank wagon is transported to an LNG low-temperature storage tank for storage. When the LNG is discharged from the LNG storage tank, the pressure of the storage tank is increased through a self-pressurization system of the storage tank, then a liquid phase outlet valve of the storage tank is opened, LNG in the storage tank is sent to a gasifier through pressure difference, and then the LNG is sent to a municipal gas pipe network through procedures of pressure regulation, metering, odorization and the like. When the outdoor environment temperature is lower and the natural gas temperature at the outlet of the air temperature type gasifier is lower than 5 ℃, a water bath type heater is connected in series at the outlet of the air temperature type gasifier to heat the gasified natural gas.
EAG is mainly discharged when the equipment or piping is over-pressurized. When LNG is gasified as gaseous natural gas, the critical temperature is-110 ℃ when natural gas is lighter than normal temperature air. To prevent aggregation of the EAG during diffusion, the EAG is heated to a temperature above-110 ℃ and then diffused. LNG storage tank with volume of 100m3 is selected to be 500m 3 The maximum discharge temperature of the EAG heater per hour is not lower than-15 ℃.
LNG vaporizing station belongs to high-risk place and need 24 incessant operations, need all-weather supervisory and monitored to vaporizing device's state to LNG vaporizing station quantity is many, needs a large amount of manpower and materials.
Disclosure of Invention
Aiming at the problems, the invention improves the existing liquefied gas vaporization pressure regulating device, realizes that the running condition of equipment can be monitored in real time through a mobile phone without personnel on site, improves the safety and the efficiency of a gasification station, and reduces the production labor cost.
The invention provides a full-function unattended remote monitoring vaporization pressure regulating system, which is characterized in that liquefied natural gas in a gas cylinder is conveyed into a vaporization device through a busbar device to be vaporized, then enters a heat recovery device, is subjected to two-stage pressure regulation through a pressure regulating device and then is subjected to pressure reduction, and finally is conveyed into a terminal customer through a metering device and a deodorizing device; the busbar device comprises two groups of busbars, an intelligent pressure transmitter and a low-temperature emergency cut-off valve, wherein each group of busbars is provided with the intelligent pressure transmitter and the low-temperature emergency cut-off valve; the vaporization device comprises two groups of vaporizers and a low-temperature emergency shut-off valve, and the low-temperature emergency shut-off valve is arranged in front of each group of vaporizers; the reheating device comprises an intelligent temperature transmitter, an intelligent electric heater and an intelligent pressure transmitter, the temperature of the gasified gas is monitored through the intelligent temperature transmitter, and reheating is carried out by the intelligent electric heater; the pressure regulating device comprises a primary pressure regulating device, a secondary pressure regulating device, an intelligent pressure transmitter and a secondary pressure regulating safety device; the metering device comprises an intelligent roots flowmeter; the odorizing device comprises an automatic odorizing device which is linked with the intelligent roots flowmeter and automatically odorizes the natural gas according to the flow of the gas; the full-function unattended remote monitoring vaporization pressure regulating system further comprises a combustible gas detector which is respectively arranged in the prying area and the bottle group area, and when leakage occurs, the concentration reaches the lower limit of the explosion limit concentration by 20% (volume concentration) and the low-temperature emergency cut-off valve can be immediately closed; the low-temperature emergency cut-off valve, the intelligent pressure transmitter, the intelligent temperature transmitter, the intelligent electric heater, the intelligent lobed wheel flowmeter, the automatic odorizing device and the flammable gas detector are all provided with wireless communication devices, and the running condition of the equipment can be monitored in real time through a mobile phone.
Further, the full-function unmanned on duty remote monitoring vaporization pressure regulating system, still include the system of diffusing, the system of diffusing includes diffusing valve and EAG device, the valve of diffusing sets up respectively between busbar device and vaporization device, behind two sets of vaporizers, between heat recovery device and the pressure regulating device, on the pipeline behind the pressure regulating device, set up between busbar device and vaporization device, behind two sets of vaporizers, the diffusing valve on the official way between heat recovery device and the pressure regulating device communicates with the EAG device and gets into the discharge port after the EAG heats and discharges, the valve of diffusing that sets up on the pipeline behind the pressure regulating device directly gets into the discharge port and discharges.
Further, the flow rate of the EAG device is 30m 3 And/h, wherein the discharge port is 5m higher than the ground, and a flame arrester is arranged in front of the discharge port.
Further, the full-function unattended remote monitoring vaporization pressure regulating system is characterized in that the two groups of vaporizers are air temperature type vaporizers, automatic switching can be realized between the two groups of vaporizers through a low-temperature emergency cut-off valve, and the switching is performed once every 6 hours.
Further, automatic switching can be realized through the low-temperature emergency cut-off valve between the two groups of buses, when the intelligent pressure transmitter displays that the pressure is too low, the liquid in the group of cylinders is about to run out, the low-temperature emergency cut-off valve can be automatically closed to cut off the working state of the channel, meanwhile, the low-temperature emergency cut-off valve of the other channel is opened, the other group of buses starts to work, alarm information can be sent to inform a user, the user can replace the used cylinders in time, and the uninterrupted gas supply function is realized.
Further, the heat recovery device is provided with an intelligent electric heater, the temperature of the gasified gas is monitored through an intelligent temperature transmitter, when the temperature is lower than 0 ℃, the intelligent electric heater can be immediately and automatically started to heat the gas, normal gas supply is ensured, when the temperature of the gasified gas is higher than 0 ℃, the intelligent electric heater can be automatically closed, and unnecessary energy consumption is reduced.
The full-function unattended remote monitoring vaporization pressure regulating system is a device which conveys liquefied natural gas in a gas cylinder to an air temperature type vaporizer for vaporization, then carries out pressure regulation by two stages and then reduces pressure, and finally feeds the liquefied natural gas into a terminal customer through deodorization and metering. The device has the advantage that the operation condition of equipment, such as temperature, pressure, flow and the like, can be monitored in real time through the mobile phone without personnel on site. The following hardware needs to be provided to realize the function: 4 groups of low-temperature emergency shut-off valves, 4 groups of intelligent pressure transmitters, an intelligent temperature transmitter, an intelligent electric heater, an intelligent roots flowmeter, an automatic odorizing device and a flammable gas detector.
Automatic switching can be realized between the two groups of bus bars through a low-temperature emergency stop valve. Each group of buses is provided with an intelligent pressure transmitter, the control system monitors the pressure of the group of buses through the intelligent pressure transmitter, when the intelligent pressure transmitter displays that the pressure is too low, the liquid in the group of bottles is about to run out, the low-temperature emergency shut-off valve is automatically closed to shut off the working state of the path, and meanwhile, the low-temperature emergency shut-off valve is opened to start the operation of the other group of buses. Similarly, the intelligent pressure transmitter can automatically switch to another group of buses when the display pressure of the intelligent pressure transmitter is too low. When the intelligent pressure transmitter monitors that the pressure is too low, alarm information can be sent to inform a user, so that the user can replace a used gas cylinder in time, and the uninterrupted gas supply function is realized.
The two groups of evaporators can be automatically switched through a low-temperature emergency cut-off valve. When the vaporizer works for a long time, the surface of the finned tube is frosted and the vaporization effect is affected, so that after the vaporizer where the low-temperature emergency shut-off valve is located works for 6 hours, the valve can be automatically closed to shut off the working state of the vaporizer, and meanwhile, the low-temperature emergency shut-off valve is opened to start the other vaporizer to work. Each path can be automatically switched to the other path after the operation is completed for 6 hours, so that the normal vaporization function is ensured.
The reheating device is provided with an intelligent electric heater, the temperature of the gasified gas is monitored through an intelligent temperature transmitter, and when the temperature is lower than 0 ℃, the intelligent electric heater can be immediately and automatically started to heat the gas, so that the gas supply is ensured to be normal. When the temperature of the gasified gas is higher than 0 ℃, the intelligent electric heater is automatically turned off, so that unnecessary energy consumption is reduced.
The pressure before and after the pressure regulation can also be monitored through the intelligent temperature transmitter and the intelligent temperature transmitter respectively, and measured data can be seen on the mobile phone of the user.
The tail end is provided with an automatic odorizing device and an intelligent roots flowmeter, the flowmeter can record some information such as the gas usage amount and can display the information on a mobile phone of a user, and the automatic odorizing device can be linked to enable the odorizing machine to automatically odorize natural gas according to the gas flow.
The prying area and the bottle group area are respectively provided with a combustible gas detector, when leakage occurs, the concentration reaches 20 percent (volume concentration) of the lower limit concentration of explosion, the low-temperature emergency cut-off valve can be immediately closed, the gas supply is cut off, and the accident caused by continuous leakage is prevented. The control system will send leakage alarm information to the user, which will be immediately known to take action.
Through the realization of the functions, a user can know the working condition of the equipment at any time and any place without arranging a person to watch the vaporization pressure regulating device, and can make reasonable arrangement in time.
The invention improves the existing liquefied gas vaporization pressure regulating device, realizes 24-hour production without personnel on site, can monitor the running condition of equipment in real time through a mobile phone, improves the safety and efficiency of a gasification station, and reduces the production labor cost.
Drawings
Figure 1 is a production flow diagram of the natural gas vaporization of the present invention.
FIG. 2 is a schematic view of the bus bar assembly area of the fully functional unattended remote monitoring vaporization pressure regulating system of the invention.
Fig. 3 is a schematic view of the vaporization device and the heat recovery device areas of the full-function unattended remote monitoring vaporization pressure regulating system of the invention.
Fig. 4 is a schematic diagram of a pressure regulating device, a metering device and an odorizing region of the full-function unattended remote monitoring vaporization pressure regulating system.
FIG. 5 is a schematic view of the EAG device and the flammable gas detecting instrument area of the full-function unattended remote monitoring vaporization pressure regulating system of the invention.
Reference numerals:
1. 2, 9, 10: intelligent pressure transmitter
3. 4, 5, 6: low-temperature emergency cut-off valve
7: intelligent temperature transmitter
8: intelligent electric heater
11: intelligent roots flowmeter
12: automatic odorizing device
13. 14: combustible gas detector
15-19: relief valve
20: relief valve
Description of the embodiments
The invention is described in further detail below by way of examples with reference to fig. 1-5.
Example 1
As shown in fig. 1-5, the full-function unattended remote monitoring vaporization pressure regulating system is used for conveying liquefied natural gas in a gas cylinder to a vaporization device for vaporization through a busbar device, then entering a heat recovery device, reducing pressure after two-stage pressure regulation through a pressure regulating device, and finally sending the liquefied natural gas into a terminal customer through a metering device and a deodorizing device; the busbar device comprises two groups of busbars, namely intelligent pressure transmitters 1 and 2 and low-temperature emergency shut-off valves 3 and 4, wherein each group of busbars is provided with an intelligent pressure transmitter and a low-temperature emergency shut-off valve; the vaporizing device comprises two groups of vaporizers and low-temperature emergency shut-off valves 5 and 6, wherein each group of vaporizers is provided with a low-temperature emergency shut-off valve before; the reheating device comprises an intelligent temperature transmitter 7, an intelligent electric heater 8 and an intelligent pressure transmitter 9, wherein the temperature of the gasified gas is monitored through the intelligent temperature transmitter 7, and the intelligent electric heater 8 is utilized for reheating; the pressure regulating device comprises a primary pressure regulating device, a secondary pressure regulating device, an intelligent pressure transmitter 10 and a secondary pressure regulating safety device; the metering device comprises an intelligent roots meter 11; the odorizing device comprises an automatic odorizing device 12, and is linked with an intelligent roots flowmeter 11, and automatically odorizes natural gas according to the flow of the gas; the full-functional unattended remote monitoring vaporization pressure regulating system further comprises combustible gas detectors 13 and 14 which are respectively arranged in the prying area and the bottle group area, and when leakage occurs, the concentration reaches 20% of the lower limit of the explosion limit concentration, and the low-temperature emergency cut-off valves 3, 4, 5 and 6 can be immediately closed; the low-temperature emergency cut-off valve, the intelligent pressure transmitter, the intelligent temperature transmitter, the intelligent electric heater, the intelligent lobed wheel flowmeter, the automatic odorizing device and the flammable gas detector are all provided with wireless communication devices, and the running condition of the equipment can be monitored in real time through a mobile phone.
The full-function unattended remote monitoring vaporization pressure regulating system further comprises a bleeding system, the bleeding system comprises bleeding valves 15-20 and an EAG device, the bleeding valves 15-20 are respectively arranged on pipelines between a busbar device and a vaporization device, after two groups of vaporizers, between a heat recovery device and a pressure regulating device and after the pressure regulating device, the bleeding valves 15-19 arranged on functional channels between the busbar device and the vaporization device, after two groups of vaporizers and between the heat recovery device and the pressure regulating device are communicated with the EAG device, and enter a discharge port for discharge after being heated by the EAG device, and the bleeding valves 20 arranged on the pipelines after the pressure regulating device directly enter the discharge port for discharge.
The flow rate of the EAG device is 30m 3 And/h, wherein the discharge port is 5m higher than the ground, and a flame arrester is arranged in front of the discharge port.
The two groups of evaporators are air temperature type evaporators, and automatic switching can be realized between the two groups of evaporators through the low-temperature emergency cut-off valves 5 and 6, and the switching is performed every 6 hours. When the vaporizer works for too long, the surface of the finned tube is frosted and the vaporization effect is affected, so that after the vaporizer where the low-temperature emergency shut-off valve is located works for 6 hours, the valve can be automatically closed to shut off the working state of the vaporizer, and meanwhile, the low-temperature emergency shut-off valve is opened to start the other vaporizer to work. Each path can be automatically switched to the other path after the operation is completed for 6 hours, so that the normal vaporization function is ensured.
The automatic switching can be realized through the low-temperature emergency cut-off valves 3 and 4 between the two groups of buses, when the intelligent pressure transmitter displays that the pressure is too low, the liquid in the group of cylinders is about to run out, the low-temperature emergency cut-off valves can be automatically closed to cut off the working state of the channel, meanwhile, the low-temperature emergency cut-off valves of the other channel are opened, the other group of buses start to work, alarm information can be sent to inform a user, the user can replace the used cylinders in time, and the uninterrupted gas supply function is realized.
The heat recovery device is provided with an intelligent electric heater 8, the temperature of the gasified gas is monitored through an intelligent temperature transmitter 7, when the temperature is lower than 0 ℃, the intelligent electric heater 8 can be immediately and automatically started to heat the gas, so that the gas supply is ensured to be normal, when the temperature of the gasified gas is higher than 0 ℃, the intelligent electric heater can be automatically closed, and the unnecessary energy consumption is reduced.
And a flammable gas detector (with an audible and visual alarm) is also arranged in the prying area and the bottle group area respectively, when leakage occurs, the concentration reaches the lower limit of the explosion limit concentration by 20% (volume concentration), the low-temperature emergency cut-off valve can be immediately closed, the gas supply is cut off, and the accident caused by continuous leakage is prevented. The control system will send leakage alarm information to the user, which will be immediately known to take action.
The invention improves the existing liquefied gas vaporization pressure regulating device, realizes 24-hour production without personnel on site, can monitor the running condition of equipment in real time through a mobile phone, improves the safety and efficiency of a gasification station, and reduces the production labor cost.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions that are formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.
Claims (6)
1. A full-functional unattended remote monitoring vaporization pressure regulating system is characterized in that liquefied natural gas in a gas cylinder is conveyed into a vaporization device through a busbar device to be vaporized, then enters a heat recovery device, is subjected to two-stage pressure regulation through a pressure regulating device and then is subjected to pressure reduction, and finally is conveyed into a terminal customer through a metering device and a odorizing device; the busbar device comprises two groups of busbars, an intelligent pressure transmitter and a low-temperature emergency cut-off valve, and each group of busbars is provided with the intelligent pressure transmitter and the low-temperature emergency cut-off valve; the vaporization device comprises two groups of vaporizers and a low-temperature emergency shut-off valve, and the low-temperature emergency shut-off valve is arranged in front of each group of vaporizers; the reheating device comprises an intelligent temperature transmitter, an intelligent electric heater and an intelligent pressure transmitter, the temperature of the gasified gas is monitored through the intelligent temperature transmitter, and reheating is carried out by the intelligent electric heater; the pressure regulating device comprises a primary pressure regulating device, a secondary pressure regulating device, an intelligent pressure transmitter and a secondary pressure regulating safety device; the metering device comprises an intelligent roots flowmeter; the odorizing device comprises an automatic odorizing device which is linked with the intelligent roots flowmeter and automatically odorizes the natural gas according to the flow of the gas; the full-function unattended remote monitoring vaporization pressure regulating system further comprises a combustible gas detector which is respectively arranged in the prying area and the bottle group area, and when leakage occurs, the concentration reaches 20% of the lower limit of the explosion limit concentration, and the low-temperature emergency cut-off valve can be immediately closed; the low-temperature emergency cut-off valve, the intelligent pressure transmitter, the intelligent temperature transmitter, the intelligent electric heater, the intelligent lobed wheel flowmeter, the automatic odorizing device and the flammable gas detector are all provided with wireless communication devices, and the running condition of the equipment can be monitored in real time through a mobile phone.
2. The fully functional unattended remote monitoring vaporization pressure regulating system according to claim 1, further comprising a bleeding system, wherein the bleeding system comprises a bleeding valve and an EAG device, the bleeding valve is respectively arranged on pipelines between the busbar device and the vaporization device, after two groups of vaporizers, between the heat recovery device and the pressure regulating device and after the pressure regulating device, the bleeding valve arranged on a functional channel between the busbar device and the vaporization device, after two groups of vaporizers and between the heat recovery device and the pressure regulating device is communicated with the EAG device, enters the discharge port for discharge after being heated by the EAG device, and the bleeding valve arranged on a pipeline after the pressure regulating device directly enters the discharge port for discharge.
3. The fully functional unattended remote monitoring vaporization pressure regulating system according to claim 2, wherein the flow rate of the EAG device is 30m 3 And/h, wherein the discharge port is 5m higher than the ground, and a flame arrester is arranged in front of the discharge port.
4. The fully functional unattended remote monitoring vaporization pressure regulating system according to claim 1, wherein the two sets of vaporizers are air temperature type vaporizers, and automatic switching can be realized between the two sets of vaporizers through a low temperature emergency cut-off valve, and the switching is performed every 6 hours.
5. The fully functional unattended remote monitoring vaporization pressure regulating system according to claim 1, wherein the two groups of buses can be automatically switched through a low-temperature emergency cut-off valve, when the intelligent pressure transmitter displays that the pressure is too low, the liquid in the group of cylinders is about to run out, the low-temperature emergency cut-off valve is automatically closed to cut off the working state of the path, meanwhile, the other group of low-temperature emergency cut-off valve is opened to enable the other group of buses to start working, and alarm information is sent to inform a user, so that the user can replace the used cylinders in time, and the uninterrupted gas supply function is realized.
6. The full-functional unattended remote monitoring vaporization pressure regulating system according to claim 1, wherein the reheating device is provided with an intelligent electric heater, the temperature of the vaporized gas is monitored through an intelligent temperature transmitter, when the temperature is lower than 0 ℃, the intelligent electric heater can be immediately and automatically started to heat the gas, so that the gas supply is ensured to be normal, when the temperature of the vaporized gas is higher than 0 ℃, the intelligent electric heater can be automatically closed, and the unnecessary energy consumption is reduced.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810028690 | 2018-01-12 | ||
| CN201810028690X | 2018-01-12 |
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| Publication Number | Publication Date |
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| CN108087723A CN108087723A (en) | 2018-05-29 |
| CN108087723B true CN108087723B (en) | 2023-09-19 |
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| CN201810049962.4A Active CN108087723B (en) | 2018-01-12 | 2018-01-18 | Full-function unattended remote monitoring vaporization pressure regulating system |
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| CN112050083A (en) * | 2020-09-04 | 2020-12-08 | 四川梅塞尔气体产品有限公司 | Skid-mounted integrated dewar gas supply device |
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| JPH04123354U (en) * | 1991-04-26 | 1992-11-09 | 富士重工業株式会社 | Gasoline supply device for LP gas and gasoline combined engine |
| JPH0771853A (en) * | 1993-09-01 | 1995-03-17 | Toshiba Corp | Automatic pressure regulation for low temperature container |
| CN105156883A (en) * | 2015-10-20 | 2015-12-16 | 沧州市天龙燃烧设备有限公司 | LNG gasification pressure regulating device and LNG gasification pressure regulating process |
| CN204962275U (en) * | 2015-09-01 | 2016-01-13 | 天津安耐吉燃气技术有限公司 | Empty formula vaporizer group sled of bathing |
| CN107477356A (en) * | 2017-08-03 | 2017-12-15 | 山东新兴重工科技发展有限公司 | A kind of band automatically controls gasification pry regulator |
-
2018
- 2018-01-18 CN CN201810049962.4A patent/CN108087723B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04123354U (en) * | 1991-04-26 | 1992-11-09 | 富士重工業株式会社 | Gasoline supply device for LP gas and gasoline combined engine |
| JPH0771853A (en) * | 1993-09-01 | 1995-03-17 | Toshiba Corp | Automatic pressure regulation for low temperature container |
| CN204962275U (en) * | 2015-09-01 | 2016-01-13 | 天津安耐吉燃气技术有限公司 | Empty formula vaporizer group sled of bathing |
| CN105156883A (en) * | 2015-10-20 | 2015-12-16 | 沧州市天龙燃烧设备有限公司 | LNG gasification pressure regulating device and LNG gasification pressure regulating process |
| CN107477356A (en) * | 2017-08-03 | 2017-12-15 | 山东新兴重工科技发展有限公司 | A kind of band automatically controls gasification pry regulator |
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