CN219121711U - Clean energy engine laboratory - Google Patents
Clean energy engine laboratory Download PDFInfo
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- CN219121711U CN219121711U CN202223173905.8U CN202223173905U CN219121711U CN 219121711 U CN219121711 U CN 219121711U CN 202223173905 U CN202223173905 U CN 202223173905U CN 219121711 U CN219121711 U CN 219121711U
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- conveying pipeline
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model discloses a clean energy engine test room, which comprises an engine test area and a fuel storage station, wherein the fuel storage station is a fuel storage pressure regulating station and comprises a storage area for placing a CNG (compressed natural gas) storage bottle group storing natural gas and a pressure regulating area for two-stage pressure regulation; meanwhile, the pressure reduction control precision is high.
Description
Technical Field
The utility model relates to a clean energy engine test room, and belongs to the technical field of engine test equipment.
Background
With the sustainable development strategy of energy sources in China and the increase of importance on environmental protection, clean energy engines have become the necessary trend of engine development. The clean energy engine adopts natural gas, methanol and other fuels to generate power, and compared with gasoline engines and diesel engines, the clean energy engine has cleaner emission, less pollution and wide application in internationally. In recent years, the development technology of clean energy engines in China has been developed and improved.
At present, clean energy is mainly natural gas and methanol, and the fuel has the characteristics of clean emission and less pollution. However, compared with conventional fuels, clean energy, especially natural gas, is also characterized by high risk levels such as flammability, explosiveness, toxicity, etc., since natural gas consists essentially of methane, and has a density of 0.72kg/m 3 The explosion limit range is 5-15%, and the potential safety hazard exists when the natural gas engine is used in a limited space (the natural gas engine laboratory belongs to the limited space), so that the high requirement is put forward on the whole machine test field of the clean energy engine. In order to meet the requirement of the usage amount, the natural gas is generally stored under high pressure and liquefied, and needs to be decompressed and gasified during the usage, thereby having higher requirements on equipment and facilities
The existing engine test room using clean energy sources such as natural gas and the like as fuel is formed by improving necessary equipment and pipelines on the basis of a gasoline and diesel engine test room. The gasoline and diesel engine laboratory adopts gasoline and diesel as fuel, the fuel is conventional liquid fuel, pressure adjustment and gasification are not needed in the using and storing processes, and the fuel has perfect storage and use standard requirements, and belongs to a more mature type laboratory. The prior art gas-diesel engine test room comprises an engine test area and a fuel storage station, wherein the fuel storage station is internally provided with a storage tank for storing fuel (gasoline and diesel oil), the storage tank is used for conveying the fuel into a gas-diesel engine in the gas-diesel engine test room through a conveying pipeline buried underground to carry out subsequent related tests, the prior art gas-diesel engine test room is rebuilt on the basis of the prior gas-diesel engine test room, and the engine test area also adopts the prior gas-diesel engine test area, and is mainly improved in the fuel storage station, and the natural gas is required to be pressurized and liquefied and stored, so that the prior CNG gas storage bottle is used for storing the natural gas, and a pressure reducer for vehicles is arranged on a conveying pipeline for pressure reduction treatment, but the accuracy of the pressure reducer for vehicles is low, the reliability is relatively poor, the pressure reduction control accuracy is low, meanwhile, the pressure reduction operation is not in time, and the danger of leakage and explosion occurs easily; in addition, safety detection protection and treatment devices and the like are not configured in the storage and transportation processes, and the problems of high limitation and unreliability in the aspects of pressure reduction control precision, safety protection and the like, low accuracy of test data, poor engine performance, high safety and environmental protection risks and the like exist.
Disclosure of Invention
The utility model aims to solve the technical problems, and provides a clean energy engine laboratory which is provided with a safety detection protection and treatment device in the storage and transportation processes, so that the safety performance is high; meanwhile, the pressure reduction control precision is high.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the clean energy engine test room comprises an engine test area and a fuel storage station, wherein the fuel storage station is a fuel storage pressure regulating station and comprises a storage area for placing a CNG (compressed natural gas) storage bottle group storing natural gas and a pressure regulating area for performing two-stage pressure regulation;
the fuel input interface of the pressure regulating area is connected with a conveying pipeline of the CNG gas storage cylinder group outlet, and a manual ball valve DN15 is arranged on the conveying pipeline of the CNG gas storage cylinder group outlet; the fuel input interface is connected with the primary heating inlets of the first and second electric heaters through a conveying pipeline, the primary heating outlets of the first and second electric heaters are connected with the secondary heating inlets of the first and second electric heaters through a conveying pipeline, the secondary heating outlets of the first and second electric heaters are connected with the fuel output interface through a conveying pipeline, and then are connected to an engine of an engine test area through a conveying pipeline for test; a manual ball valve DN15, a primary pressure regulator 1301-F and a manual ball valve DN25 are sequentially arranged on a conveying pipeline of the primary heating outlet to carry out primary pressure regulation, a manual ball valve DN25, a cut-off valve, a secondary pressure regulator and a manual butterfly valve DN50 are sequentially arranged on a conveying pipeline of the secondary heating outlet to carry out secondary pressure regulation, and a manual butterfly valve DN50, a turbine flowmeter and a manual butterfly valve DN50 are sequentially arranged on the conveying pipeline after the secondary pressure regulation and then are connected with a fuel output interface; the conveying pipeline of the secondary heating outlet after primary pressure regulation and the conveying pipeline after secondary pressure regulation are both provided with safety relief valves;
pressure sensors are arranged at the outlet of the CNG gas storage cylinder group, the primary heating inlet, the rear of the primary pressure regulator 1301-F, the secondary heating inlet, the rear of the secondary pressure regulator and the fuel output interface; 1. temperature sensors are arranged at the two-stage electric heater, the two-stage heating inlet and the fuel output interface; the engine test area and the storage area are respectively provided with a fire smoke detector, an ultraviolet flame detector and a combustible gas detector; the pressure sensor, the temperature sensor, the fire smoke detector, the ultraviolet flame detector, the combustible gas detector, the primary pressure regulators 1301-F, the cut-off valve, the secondary pressure regulator and the turbine flowmeter are all in signal connection with a controller, the controller also has an alarm function, and the controller is also in signal connection with a blower and an exhaust fan which are arranged on an engine test area and a storage area.
The technical scheme of the utility model is further improved as follows: the conveying pipeline and the connecting interface are made of corrosion-resistant stainless steel.
The technical scheme of the utility model is further improved as follows: the primary pressure regulating pipeline for primary pressure regulation and the secondary pressure regulating pipeline for secondary pressure regulation are arranged in parallel into a plurality of groups.
The technical scheme of the utility model is further improved as follows: the primary pressure regulating pipeline and the secondary pressure regulating conveying pipeline are respectively provided with a standby pipeline, and the standby pipeline is provided with a manual butterfly valve DN50.
By adopting the technical scheme, the utility model has the following technical progress:
the utility model can be provided with the safety detection protection and treatment device in the storage and transportation processes, and has high safety performance; meanwhile, the two-stage pressure regulation control is adopted, and the pressure reduction control precision is high.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a regulation control diagram of the inventive surge region;
FIG. 3 is an enlarged view of the primary voltage regulation control of FIG. 2 in accordance with the present utility model;
fig. 4 is an enlarged view of fig. 2 with respect to two-stage voltage regulation control in accordance with the present utility model.
Detailed Description
The utility model is further illustrated by the following examples:
a clean energy engine test room, as shown in fig. 1, comprising an engine test area and a fuel storage station; the engine test area is modified by adopting the existing gasoline and diesel engine test area, a fire smoke detector and an ultraviolet flame detector are arranged at the top, a combustible gas detector is arranged above a pipeline valve of the engine test area, a blower is arranged on one wall, and an exhaust fan is arranged on the opposite wall.
As shown in fig. 2-4, the fuel input interface of the pressure regulating area is connected with a conveying pipeline of the CNG gas cylinder group outlet, and a manual ball valve DN15 is arranged on the conveying pipeline of the CNG gas cylinder group outlet; the fuel input interface is connected with the primary heating inlets of the first and second electric heaters through a conveying pipeline, the primary heating outlets of the first and second electric heaters are connected with the secondary heating inlets of the first and second electric heaters through a conveying pipeline, the secondary heating outlets of the first and second electric heaters are connected with the fuel output interface through a conveying pipeline, and then are connected to an engine of an engine test area through a conveying pipeline for test; a manual ball valve DN15, a primary pressure regulator 1301-F and a manual ball valve DN25 are sequentially arranged on a conveying pipeline of the primary heating outlet to carry out primary pressure regulation, a manual ball valve DN25, a cut-off valve, a secondary pressure regulator and a manual butterfly valve DN50 are sequentially arranged on a conveying pipeline of the secondary heating outlet to carry out secondary pressure regulation, and a manual butterfly valve DN50, a turbine flowmeter and a manual butterfly valve DN50 are sequentially arranged on the conveying pipeline after the secondary pressure regulation and then are connected with a fuel output interface; the conveying pipeline of the secondary heating outlet after primary pressure regulation and the conveying pipeline after secondary pressure regulation are both provided with a safety relief valve.
After each stage of pressure regulation, safety relief valves are arranged, and the functions are as follows: when the pressure of the outlet gas exceeds a set value, the safety valve is opened to automatically remove the overpressure gas, so as to achieve the purposes of reducing the pressure of the outlet gas and protecting downstream equipment. When the pressure of the outlet gas is reduced to 0.8 times of the opening pressure of the safety valve, the safety valve opening device automatically returns to the closed state.
Pressure sensors are arranged at the outlet of the CNG gas storage cylinder group, the primary heating inlet, the rear of the primary pressure regulator 1301-F, the secondary heating inlet, the rear of the secondary pressure regulator and the fuel output interface; 1. temperature sensors are arranged at the two-stage electric heater, the two-stage heating inlet and the fuel output interface; the top of the storage area is provided with a fire smoke detector and an ultraviolet flame detector, a combustible gas detector is arranged above a pipeline valve of the storage area, a blower is arranged on one wall of the storage area, and an exhaust fan is arranged on the opposite wall; the pressure sensor, the temperature sensor, the fire smoke detector, the ultraviolet flame detector, the combustible gas detector, the primary pressure regulators 1301-F, the cut-off valve, the secondary pressure regulator and the turbine flowmeter are all in signal connection with a controller, the controller also has an alarm function, and the controller is also in signal connection with a blower and an exhaust fan which are arranged on an engine test area and a storage area.
Furthermore, the conveying pipeline and the connecting interface are made of corrosion-resistant stainless steel, so that the problems of leakage and the like caused by fuel corrosion are effectively avoided.
Further, the primary pressure regulating pipeline for primary pressure regulation and the secondary pressure regulating pipeline for secondary pressure regulation are arranged in parallel to form a plurality of groups, so that the plurality of groups of pressure regulation can be performed according to the required flow, and the flow is improved.
Furthermore, the first-stage pressure regulating pipeline and the second-stage pressure regulating conveying pipeline are respectively provided with a standby pipeline, and the standby pipeline is provided with a manual butterfly valve DN50.
The working principle is as follows:
when the device works, natural gas enters a conveying pipeline from an outlet of a CNG gas storage bottle group, a manual ball valve DN15 is opened, the natural gas enters a first-stage heating inlet of a first-stage and second-stage electric heater for heating (decompression is an endothermic process), the heated natural gas flows out from the first-stage heating outlet of the first-stage and second-stage electric heater, the pressure is regulated by a first-stage pressure regulator 1301-F of a first-stage pressure regulating pipeline, then enters a second-stage heating inlet of the first-stage and second-stage electric heater, the heated natural gas flows out from the second-stage heating outlet of the first-stage and second-stage electric heater, the pressure is regulated by a second-stage pressure regulator of the second-stage pressure regulating pipeline, and the pressure of the compressed natural gas is reduced by at least 0.1-0.8MPa from 20MPa after the two-stage decompression and is sent to an engine inlet for subsequent tests.
When the combustible gas detectors in the engine test area and the storage area detect that the concentration of the combustible gas reaches a set value, transmitting detected signals to the controller, alarming by the controller, automatically interlocking and starting the blower and the exhaust fan, automatically closing a cut-off valve on a conveying pipeline, and stopping supplying natural gas;
when fire smoke detectors and ultraviolet flame detectors in the engine test area and the storage area detect fire, the controller gives an alarm, automatically closes a cut-off valve on the conveying pipeline and stops supplying natural gas;
when the pressure sensor detects that the pressure of the fuel in the delivery pipeline rises to exceed the limit value, a signal is transmitted to the controller, the controller starts the safety relief valve, and the fuel is discharged to the atmosphere or the collecting tank until the pressure is reduced to a safety value.
The utility model can be used for testing natural gas engines and methanol engines, and when the methanol engines are used, the pressure regulation is not needed, and a special methanol pump is used for providing power to send methanol to the inlet of the engines for subsequent tests.
Claims (4)
1. A clean energy engine room comprising an engine test area and a fuel storage station, characterized in that: the fuel storage station is a fuel storage pressure regulating station and comprises a storage area for placing a CNG (compressed natural gas) storage bottle group for storing natural gas and a pressure regulating area for carrying out two-stage pressure regulation;
the fuel input interface of the pressure regulating area is connected with a conveying pipeline of the CNG gas storage cylinder group outlet, and a manual ball valve DN15 is arranged on the conveying pipeline of the CNG gas storage cylinder group outlet; the fuel input interface is connected with the primary heating inlets of the first and second electric heaters through a conveying pipeline, the primary heating outlets of the first and second electric heaters are connected with the secondary heating inlets of the first and second electric heaters through a conveying pipeline, the secondary heating outlets of the first and second electric heaters are connected with the fuel output interface through a conveying pipeline, and then are connected to an engine of an engine test area through a conveying pipeline for test; a manual ball valve DN15, a primary pressure regulator 1301-F and a manual ball valve DN25 are sequentially arranged on a conveying pipeline of the primary heating outlet to carry out primary pressure regulation, a manual ball valve DN25, a cut-off valve, a secondary pressure regulator and a manual butterfly valve DN50 are sequentially arranged on a conveying pipeline of the secondary heating outlet to carry out secondary pressure regulation, and a manual butterfly valve DN50, a turbine flowmeter and a manual butterfly valve DN50 are sequentially arranged on the conveying pipeline after the secondary pressure regulation; the conveying pipeline of the secondary heating outlet after primary pressure regulation and the conveying pipeline after secondary pressure regulation are both provided with safety relief valves;
pressure sensors are arranged at the outlet of the CNG gas storage cylinder group, the primary heating inlet, the rear of the primary pressure regulator 1301-F, the secondary heating inlet, the rear of the secondary pressure regulator and the fuel output interface; 1. temperature sensors are arranged at the two-stage electric heater, the two-stage heating inlet and the fuel output interface; the engine test area and the storage area are respectively provided with a fire smoke detector, an ultraviolet flame detector and a combustible gas detector; the pressure sensor, the temperature sensor, the fire smoke detector, the ultraviolet flame detector, the combustible gas detector, the primary pressure regulators 1301-F, the cut-off valve, the secondary pressure regulator and the turbine flowmeter are all in signal connection with a controller, the controller also has an alarm function, and the controller is also in signal connection with a blower and an exhaust fan which are arranged on an engine test area and a storage area.
2. A clean energy engine laboratory as defined in claim 1, wherein: the conveying pipeline and the connecting interface are made of corrosion-resistant stainless steel.
3. A clean energy engine laboratory as defined in claim 1, wherein: the primary pressure regulating pipeline for primary pressure regulation and the secondary pressure regulating pipeline for secondary pressure regulation are arranged in parallel into a plurality of groups.
4. A clean energy engine laboratory according to claim 3 and wherein: the primary pressure regulating pipeline and the secondary pressure regulating conveying pipeline are respectively provided with a standby pipeline, and the standby pipeline is provided with a manual butterfly valve DN50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223173905.8U CN219121711U (en) | 2022-11-29 | 2022-11-29 | Clean energy engine laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223173905.8U CN219121711U (en) | 2022-11-29 | 2022-11-29 | Clean energy engine laboratory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219121711U true CN219121711U (en) | 2023-06-02 |
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ID=86533762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223173905.8U Active CN219121711U (en) | 2022-11-29 | 2022-11-29 | Clean energy engine laboratory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219121711U (en) |
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2022
- 2022-11-29 CN CN202223173905.8U patent/CN219121711U/en active Active
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