CN113124315A - LNG pressure boost control system - Google Patents
LNG pressure boost control system Download PDFInfo
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- CN113124315A CN113124315A CN202110479542.1A CN202110479542A CN113124315A CN 113124315 A CN113124315 A CN 113124315A CN 202110479542 A CN202110479542 A CN 202110479542A CN 113124315 A CN113124315 A CN 113124315A
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- Prior art keywords
- natural gas
- gaseous natural
- control device
- tank
- motor
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 348
- 239000003345 natural gas Substances 0.000 claims abstract description 174
- 239000003949 liquefied natural gas Substances 0.000 claims abstract description 59
- 239000006200 vaporizer Substances 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
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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
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- 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
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
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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
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/06—Fluid distribution
- F17C2265/066—Fluid distribution for feeding engines for propulsion
-
- 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
- F17C2270/0171—Trucks
Abstract
The invention discloses an LNG (liquefied natural gas) pressurization control system, wherein liquid natural gas is stored in an LNG storage tank in the system, the liquid natural gas is converted into gaseous natural gas through a vaporizer device and is stored in a first gaseous natural gas cache tank, a pressure sensor detects the air pressure of a second gaseous natural gas cache tank and sends the air pressure to a pressurization control device, when the pressurization control device detects that the received air pressure is smaller than a preset minimum value, the gaseous natural gas in the first gaseous natural gas cache tank is pumped into the second gaseous natural gas cache tank, and a natural gas engine is started when the air pressure of the second gaseous natural gas cache tank reaches the air pressure for starting the natural gas engine; and when the pressurization control device detects that the received air pressure is greater than the preset maximum value, the pressurization control device stops working. The invention can quickly pressurize in a short time by arranging the pressurization control device to extract air and pressurize, realize the starting of the engine in a short time and improve the driving convenience.
Description
Technical Field
The invention relates to the technical field of LNG trucks, in particular to an LNG pressurization control system.
Background
Since LNG (liquid Natural Gas) trucks have low emission pollution, long endurance, and lower fuel cost than diesel, LNG trucks are widely used as the national emission standard is upgraded.
When an engine of the LNG truck is started, gaseous natural gas with certain air pressure needs to be input, LNG is liquid natural gas, the liquid natural gas needs to be heated to become the gaseous natural gas, and when the air pressure of the gaseous natural gas reaches a certain value, the engine starts to work.
Because the liquefied natural gas converts gaseous natural gas into and needs a large amount of heats, and carry out the pressure boost through heating device among the prior art, this just makes need for the long time among the prior art and can make gaseous natural gas's atmospheric pressure reach the required value of engine start, and when atmospheric pressure did not reach the required value of engine start, the LNG truck need stop waiting, leads to the driving inconvenience.
Disclosure of Invention
The invention provides an LNG pressurization control system, which can realize the starting of an engine in a short time and improve the driving convenience. The specific technical scheme is as follows:
in a first aspect, the present invention provides an LNG pressurization control system, which includes an LNG storage tank, a vaporizer apparatus, a first gaseous natural gas buffer tank, a pressurization control apparatus, a second gaseous natural gas buffer tank, and a pressure sensor;
the LNG storage tank is connected with the vaporizer device, the vaporizer device is connected with the first gaseous natural gas cache tank, the first gaseous natural gas cache tank is connected with the pressurization control device, the pressurization control device is respectively connected with the second gaseous natural gas cache tank and the pressure sensor, and the second gaseous natural gas cache tank is connected with a natural gas engine;
the LNG storage tank is internally stored with liquefied natural gas, the liquefied natural gas is converted into gaseous natural gas through the vaporizer device and is stored in the first gaseous natural gas cache tank, the pressure sensor detects the air pressure of the second gaseous natural gas cache tank and sends the air pressure to the pressurization control device, when the pressurization control device detects that the received air pressure is smaller than a preset minimum value, the pressurization control device pumps the gaseous natural gas in the first gaseous natural gas cache tank into the second gaseous natural gas cache tank, and when the air pressure of the second gaseous natural gas cache tank reaches the air pressure for starting the natural gas engine, the natural gas engine is started; and when the pressure boost control device detects that the received air pressure is greater than a preset maximum value, the pressure boost control device stops working.
Optionally, the boost control device comprises a controller, a motor and a turbine;
the controller is connected with the motor, the output end of the motor is connected with the turbine, and the turbine is respectively connected with the first gaseous natural gas cache tank and the second gaseous natural gas cache tank;
the pressure sensor detects the atmospheric pressure of second gaseous natural gas buffer tank send to the controller, works as when the controller detects that received atmospheric pressure is less than and predetermines the minimum, the controller control the motor rotates, the motor drives the turbine rotates, the turbine will gaseous natural gas in the first gaseous natural gas buffer tank is taken out to in the second gaseous natural gas buffer tank, works as when the controller detects that received atmospheric pressure is greater than and predetermines the maximum value, the controller control the motor stop work.
Optionally, the motor is a high-speed dc brushless motor.
Optionally, the rotation speed of the motor is 35000 revolutions per minute.
Optionally, the power of the motor is calculated by the following formula:
P＝9550*T*n
wherein, P is the output power of the motor, T is the output torque of the motor, and n is the rotating speed of the motor.
Optionally, the output power of the motor is 200 watts.
Optionally, the control mode of the motor is a hall-free control mode.
Optionally, the first gaseous natural gas buffer tank is connected to the pressurization control device through a pipeline.
Optionally, the pressurization control device is connected with the second gaseous natural gas buffer tank through a pipeline.
Optionally, the turbine is connected to the first gaseous natural gas buffer tank and the second gaseous natural gas buffer tank through pipelines, respectively.
As can be seen from the above, an LNG pressurization control system provided in an embodiment of the present invention includes an LNG storage tank, a vaporizer device, a first gaseous natural gas buffer tank, a pressurization control device, a second gaseous natural gas buffer tank, and a pressure sensor, where the LNG storage tank is connected to the vaporizer device, the vaporizer device is connected to the first gaseous natural gas buffer tank, the first gaseous natural gas buffer tank is connected to the pressurization control device, the pressurization control device is respectively connected to the second gaseous natural gas buffer tank and the pressure sensor, the second gaseous natural gas buffer tank is connected to a natural gas engine, liquid natural gas is stored in the LNG storage tank, the liquid natural gas is converted into gaseous natural gas by the vaporizer device and stored in the first gaseous natural gas buffer tank, the pressure sensor detects an air pressure of the second gaseous natural gas buffer tank and sends the gaseous natural gas to the pressurization control device, when the pressurization control device detects that the received air pressure is smaller than a preset minimum value, the pressurization control device pumps the gaseous natural gas in the first gaseous natural gas cache tank into a second gaseous natural gas cache tank, and when the air pressure of the second gaseous natural gas cache tank reaches the air pressure for starting the natural gas engine, the natural gas engine is started; and when the pressurization control device detects that the received air pressure is greater than the preset maximum value, the pressurization control device stops working. In the embodiment of the invention, the gaseous natural gas in the first gaseous natural gas cache tank is pumped into the second gaseous natural gas cache tank by the way of arranging the pressurization control device, compared with the way of heating and pressurizing by the heating device in the prior art, the way of pumping and pressurizing can quickly pressurize in a short time, so that the air pressure of the second gaseous natural gas cache tank can reach the air pressure for starting the natural gas engine in a short time, the engine is started in a short time, and the driving convenience is improved. Of course, not all of the advantages described above need to be achieved at the same time in the practice of any one product or method of the invention.
The innovation points of the embodiment of the invention comprise:
1. in the embodiment of the invention, the gaseous natural gas in the first gaseous natural gas cache tank is pumped into the second gaseous natural gas cache tank by the way of arranging the pressurization control device, compared with the way of heating and pressurizing by the heating device in the prior art, the way of pumping and pressurizing can quickly pressurize in a short time, so that the air pressure of the second gaseous natural gas cache tank can reach the air pressure for starting the natural gas engine in a short time, the engine is started in a short time, and the driving convenience is improved.
2. In the embodiment of the invention, the pressurization control device is far away from the liquefied natural gas in the LNG storage tank, so that the liquefied natural gas is not easy to mix in the gaseous natural gas, and even if a small part of the liquefied natural gas is mixed in the gaseous natural gas, the pressurization control device has a certain temperature, the part of the liquefied natural gas can be gasified into the gaseous natural gas, so that the situation that the engine cannot be started due to the fact that the liquefied natural gas enters the engine is avoided.
3. In the embodiment of the invention, the air pressure of the second gaseous natural gas cache tank is controlled within a certain range, namely between the preset minimum value and the preset maximum value, through the pressurization control device, so that the engine can work in a stable state.
4. Pressurization is realized through a turbocharging mode, rapid pressurization can be achieved, the air pressure of the second gaseous natural gas cache tank can rapidly reach the air pressure required by starting of the natural gas engine, the pressurization time is shortened, starting of the natural gas engine is further realized in a short time, and the driving convenience is improved.
5. The control mode of the motor is set to be a Hall-free control mode, so that devices can be reduced, the cost can be reduced, and the system is more stable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is to be understood that the drawings in the following description are merely exemplary of some embodiments of the invention. For a person skilled in the art, without inventive effort, further figures can be obtained from these figures.
Fig. 1 is a schematic structural diagram of an LNG pressurization control system according to an embodiment of the present invention.
In fig. 1, 1LNG storage tank, 2 vaporizer device, 3 first gaseous natural gas buffer tank, 4 pressure boost control device, 5 second gaseous natural gas buffer tank, 6 pressure sensor.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
It is to be noted that the terms "comprises" and "comprising" and any variations thereof in the embodiments and drawings of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The embodiment of the invention discloses an LNG pressurization control system, which can realize the starting of an engine in a short time and improve the driving convenience. The following provides a detailed description of embodiments of the invention.
Fig. 1 is a schematic structural diagram of an LNG pressurization control system according to an embodiment of the present invention, and referring to fig. 1, an LNG pressurization control system according to an embodiment of the present invention includes an LNG storage tank 1, a vaporizer apparatus 2, a first gaseous natural gas buffer tank 3, a pressurization control apparatus 4, a second gaseous natural gas buffer tank 5, and a pressure sensor 6.
With continued reference to fig. 1, an LNG (Liquefied Natural Gas) storage tank 1 is connected to a vaporizer apparatus 2, the vaporizer apparatus 2 is connected to a first gaseous Natural Gas buffer tank 3, and the first gaseous Natural Gas buffer tank 3 is connected to a pressurization control apparatus 4, wherein the first gaseous Natural Gas buffer tank 3 may be connected to the pressurization control apparatus 4 through a pipeline. The pressurization control device 4 is respectively connected with the second gaseous natural gas cache tank 5 and the pressure sensor 6, the second gaseous natural gas cache tank 5 is connected with the natural gas engine, wherein the pressurization control device 4 can be connected with the second gaseous natural gas cache tank 5 through a pipeline.
During operation, liquefied natural gas is stored in the LNG storage tank 1, the liquefied natural gas is converted into gaseous natural gas through the vaporizer device 2 and is stored in the first gaseous natural gas buffer tank 3, and the pressure sensor 6 detects the air pressure of the second gaseous natural gas buffer tank 5 and sends the air pressure to the pressurization control device 4.
When the pressurization control device 4 detects that the received air pressure is smaller than the preset minimum value, it is shown that the air pressure in the second gaseous natural gas cache tank 5 is smaller and not enough to start the natural gas engine at the moment, in order to start the natural gas engine, the pressurization control device 4 pumps the gaseous natural gas in the first gaseous natural gas cache tank 3 into the second gaseous natural gas cache tank 5, the gaseous natural gas in the second gaseous natural gas cache tank 5 is increased, the air pressure is increased, and when the air pressure of the second gaseous natural gas cache tank 5 reaches the air pressure required by starting the natural gas engine, the natural gas engine is started.
When the pressurization control device 4 detects that the received air pressure is greater than the preset maximum value, it indicates that the air pressure in the second gaseous natural gas cache tank 5 is greater at this time, and the gaseous natural gas in the first gaseous natural gas cache tank 3 does not need to be continuously pumped into the second gaseous natural gas cache tank 5, and the pressurization control device 4 stops working.
After the natural gas engine starts, gaseous natural gas in the second gaseous natural gas buffer tank 5 enters into the natural gas engine, make gaseous natural gas in the second gaseous natural gas buffer tank 5 reduce, at this moment, pressure sensor 6 is still detecting the atmospheric pressure of second gaseous natural gas buffer tank 5 and sending to pressure boost controlling means 4, when pressure boost controlling means 4 detects that received atmospheric pressure is less than and predetermines the minimum, will carry out above-mentioned process once more, pressure boost controlling means 4 takes out gaseous natural gas in the first gaseous natural gas buffer tank 3 to second gaseous natural gas buffer tank 5 promptly, when pressure boost controlling means 4 detects that received atmospheric pressure is greater than and predetermines the maximum, pressure boost controlling means 4 stop work.
The boost control device 4 may include a controller, a motor, and a turbine, among others.
The controller is connected with the motor, and the output and the turbine of motor are connected, and the turbine is connected with first gaseous natural gas buffer tank 3 and second gaseous natural gas buffer tank 5 respectively, and exemplarily, the turbine is connected with first gaseous natural gas buffer tank 3 and second gaseous natural gas buffer tank 5 through the pipeline respectively.
The pressure sensor 6 detects the atmospheric pressure of second gaseous natural gas buffer tank 5 and sends to the controller, when the controller detects that received atmospheric pressure is less than predetermined minimum, controller control motor rotates, and the motor drives the turbine and rotates, and the turbine takes out the gaseous natural gas in first gaseous natural gas buffer tank 3 to second gaseous natural gas buffer tank 5 in, when the controller detects that received atmospheric pressure is greater than predetermined maximum, controller control motor stop work.
From this, realize the pressurization through the turbocharging mode, can reach quick pressurization for the atmospheric pressure of second gaseous state natural gas buffer tank 5 reaches the required atmospheric pressure of natural gas engine start fast, has shortened the pressurization time, further realizes the natural gas engine start-up in the short time, improves driving convenience.
Illustratively, the motor may be a high speed dc brushless motor.
For example, the control mode of the motor may be a hall-free control mode. Therefore, the control mode of the motor is set to be a Hall-free control mode, so that the number of devices can be reduced, the cost can be reduced, and the system is more stable.
Illustratively, the rotational speed of the motor may be 35000 revolutions per minute.
Illustratively, the power of the motor is calculated by the following formula:
P＝9550*T*n
wherein, P is the output power of the motor, T is the output torque of the motor, and n is the rotating speed of the motor.
For example, the output power of the motor may be 200 watts.
As can be seen from the above, an LNG pressurization control system provided in an embodiment of the present invention includes an LNG storage tank, a vaporizer device, a first gaseous natural gas buffer tank, a pressurization control device, a second gaseous natural gas buffer tank, and a pressure sensor, where the LNG storage tank is connected to the vaporizer device, the vaporizer device is connected to the first gaseous natural gas buffer tank, the first gaseous natural gas buffer tank is connected to the pressurization control device, the pressurization control device is respectively connected to the second gaseous natural gas buffer tank and the pressure sensor, the second gaseous natural gas buffer tank is connected to a natural gas engine, liquid natural gas is stored in the LNG storage tank, the liquid natural gas is converted into gaseous natural gas by the vaporizer device and stored in the first gaseous natural gas buffer tank, the pressure sensor detects an air pressure of the second gaseous natural gas buffer tank and sends the gaseous natural gas to the pressurization control device, when the pressurization control device detects that the received air pressure is smaller than a preset minimum value, the pressurization control device pumps the gaseous natural gas in the first gaseous natural gas cache tank into a second gaseous natural gas cache tank, and when the air pressure of the second gaseous natural gas cache tank reaches the air pressure for starting the natural gas engine, the natural gas engine is started; and when the pressurization control device detects that the received air pressure is greater than the preset maximum value, the pressurization control device stops working. In the embodiment of the invention, the gaseous natural gas in the first gaseous natural gas cache tank is pumped into the second gaseous natural gas cache tank by the way of arranging the pressurization control device, compared with the way of heating and pressurizing by the heating device in the prior art, the way of pumping and pressurizing can quickly pressurize in a short time, so that the air pressure of the second gaseous natural gas cache tank can reach the air pressure for starting the natural gas engine in a short time, the engine is started in a short time, and the driving convenience is improved.
In addition, in the prior art, the heating device is used for supercharging, so that the liquefied natural gas is easily mixed in the gaseous natural gas and enters the engine together, and the engine cannot be started.
In the embodiment of the invention, the air pressure of the second gaseous natural gas buffer tank is controlled within a certain range, namely between a preset minimum value and a preset maximum value, so that the engine can work in a stable state.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
Those of ordinary skill in the art will understand that: modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, or may be located in one or more devices different from the embodiments with corresponding changes. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An LNG pressurization control system is characterized by comprising an LNG storage tank, a vaporizer device, a first gaseous natural gas cache tank, a pressurization control device, a second gaseous natural gas cache tank and a pressure sensor;
the LNG storage tank is connected with the vaporizer device, the vaporizer device is connected with the first gaseous natural gas cache tank, the first gaseous natural gas cache tank is connected with the pressurization control device, the pressurization control device is respectively connected with the second gaseous natural gas cache tank and the pressure sensor, and the second gaseous natural gas cache tank is connected with a natural gas engine;
the LNG storage tank is internally stored with liquefied natural gas, the liquefied natural gas is converted into gaseous natural gas through the vaporizer device and is stored in the first gaseous natural gas cache tank, the pressure sensor detects the air pressure of the second gaseous natural gas cache tank and sends the air pressure to the pressurization control device, when the pressurization control device detects that the received air pressure is smaller than a preset minimum value, the pressurization control device pumps the gaseous natural gas in the first gaseous natural gas cache tank into the second gaseous natural gas cache tank, and when the air pressure of the second gaseous natural gas cache tank reaches the air pressure for starting the natural gas engine, the natural gas engine is started; and when the pressure boost control device detects that the received air pressure is greater than a preset maximum value, the pressure boost control device stops working.
2. The system of claim 1, wherein the boost control device comprises a controller, an electric machine, and a turbine;
the controller is connected with the motor, the output end of the motor is connected with the turbine, and the turbine is respectively connected with the first gaseous natural gas cache tank and the second gaseous natural gas cache tank;
the pressure sensor detects the atmospheric pressure of second gaseous natural gas buffer tank send to the controller, works as when the controller detects that received atmospheric pressure is less than and predetermines the minimum, the controller control the motor rotates, the motor drives the turbine rotates, the turbine will gaseous natural gas in the first gaseous natural gas buffer tank is taken out to in the second gaseous natural gas buffer tank, works as when the controller detects that received atmospheric pressure is greater than and predetermines the maximum value, the controller control the motor stop work.
3. The system of claim 2, wherein the motor is a high speed dc brushless motor.
4. A system according to claim 2 or 3, characterised in that the rotational speed of the motor is 35000 revolutions per minute.
5. The system of any one of claims 2-4, wherein the power of the motor is calculated by the formula:
P＝9550*T*n
wherein, P is the output power of the motor, T is the output torque of the motor, and n is the rotating speed of the motor.
6. The system of claim 5, wherein the output power of the motor is 200 watts.
7. The system of claim 2 or 3, wherein the motor is controlled in a hall-less manner.
8. The system of claim 1, wherein the first gaseous natural gas cache tank is coupled to the pressurization control device via a pipeline.
9. The system of claim 1, wherein the pressurization control device is coupled to the second gaseous natural gas cache tank via a pipeline.
10. The system of claim 2, wherein the turbine is connected to the first gaseous natural gas cache tank and the second gaseous natural gas cache tank by a pipeline, respectively.
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| CN202110479542.1A CN113124315A (en) | 2021-04-30 | 2021-04-30 | LNG pressure boost control system |
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