CN211123055U - Small and miniature natural gas pressure energy power generation test platform - Google Patents
Small and miniature natural gas pressure energy power generation test platform Download PDFInfo
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- CN211123055U CN211123055U CN201920651467.0U CN201920651467U CN211123055U CN 211123055 U CN211123055 U CN 211123055U CN 201920651467 U CN201920651467 U CN 201920651467U CN 211123055 U CN211123055 U CN 211123055U
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Abstract
The utility model discloses a little miniature natural gas pressure energy electricity generation test platform, include the first voltage regulator, first stop valve, solenoid valve, flowmeter, filter, turbine power generation equipment, second voltage regulator, flow control valve that connect gradually through the pipeline, monitoring system, including first thermometer, first temperature transmitter, first manometer, first pressure transmitter, second manometer, second temperature transmitter, second thermometer, third manometer, the battery, the safety guarantee system, including ball valve and second stop valve, connect respectively at the hose of turbine power generation equipment air inlet and gas outlet, combustible gas alarm, P L C.
Description
Technical Field
The utility model relates to a natural gas pressure energy electricity generation test field especially relates to a little miniature natural gas pressure energy electricity generation test platform, aims at improving little miniature natural gas pressure energy power generating equipment's operating stability and output efficiency.
Background
The research result of the domestic pipe network pressure energy power generation technology is greatly developed along with the vigorous development of the natural gas industry in China, and a small micro pressure energy power generation process mode is purposefully provided aiming at the characteristics of small power consumption and over-dispersed distribution of electric equipment in certain plant areas and the phenomenon of power shortage in certain remote areas, and the problems can be fundamentally solved by utilizing the advantages of high flexibility, wide application range and small investment. However, in order to solve the problems of frequent operation failure of the small-scale pressure energy power generation device and parameter errors in design, a test platform and an implementation method need to be designed to correct the problems.
A small and miniature natural gas pressure energy power generation test platform is a test center specially aiming at the utilization of natural gas pipe network pressure energy in actual projects, and ensures that the quality performance of a device system reaches the designed expected standard by comprehensively testing the operation parameters and output power of a power generation device system and the operation safety degree, reduces the use faults under the subsequent actual working conditions, reduces the probability of occurrence of emergency in the operation process, and maximally ensures that the pressure can utilize the safe and efficient operation of the process.
Wisdom gas, intelligence pipe network are that the gas enterprise improves the comprehensive operation level, strengthen enterprise operation safety, promote customer satisfaction, increase the effective means of enterprise economic benefits, the future development trend of natural gas trade has been represented, natural gas pipe network residual pressure power generation technology is under the prerequisite that does not sacrifice natural gas value, retrieve high-pressure natural gas effectively at the valuable pressure energy of pressure regulating in-process, wherein, the electric quantity that little miniature pressure energy power generation technology produced can be for the power supply unit of each automatic control valve in the station, the instrument, data display, modules such as wireless transmission, realize that dispatch center and station carry out seamless linking, provide the guarantee for the safe operation of natural gas. The intelligent energy grid can not be disconnected from the continuous supply of electric power, the small and miniature pressure energy power generation technology can be further applied to the defects of no electricity and the like caused by remote location or other reasons of a pressure regulating station and a long-distance transmission pipeline, and the troublesome problems of self electricity utilization, remote transmission, monitoring and the like are solved. The introduction of the power generation technology can further improve the intelligent level of natural gas enterprise operation and promote the construction of natural gas intelligent pipe networks.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the parameter deviation that probably appears in little miniature natural gas pressure energy power generation facility design process to and common problem trouble in the operation process, and provided a little miniature natural gas pressure energy power generation test platform, this platform can prevent in advance and in time solve above-mentioned problem, has effectively improved power generating equipment's output efficiency.
The utility model discloses a reach above-mentioned requirement and the technical scheme who adopts is:
a small and miniature natural gas pressure energy power generation test platform comprises:
the system comprises a first pressure regulator, a first stop valve, an electromagnetic valve, a flowmeter, a filter, turbine power generation equipment, a second pressure regulator and a flow regulating valve which are sequentially connected through a gas pipeline;
the monitoring system comprises a first thermometer, a first temperature transmitter, a first pressure gauge and a first pressure transmitter which are connected with a pipeline between the flowmeter and the turbine power generation equipment in a bypassing manner, and a second pressure transmitter, a second pressure gauge, a second temperature transmitter and a second thermometer which are connected with a pipeline between the turbine power generation equipment and the second pressure regulator in a bypassing manner; a third pressure gauge which is connected by-pass with the pipeline between the second pressure regulator and the flow regulating valve;
the storage battery is connected with the power output end of the turbine power generation equipment through a circuit;
the safety guarantee system comprises a ball valve and a second stop valve which are connected with a pipeline in a bypassing way, hoses which are respectively connected with an air inlet and an air outlet of the turbine power generation equipment, and a combustible gas alarm which is arranged on the pipeline;
and the P L C is in signal connection with the electromagnetic valve, the flowmeter, the first temperature transmitter, the first pressure transmitter, the turbine power generation equipment, the combustible gas alarm, the storage battery, the second pressure transmitter and the second temperature transmitter through circuits respectively.
Furthermore, the first temperature transmitter and the first temperature gauge, the first pressure transmitter and the first pressure gauge, the second temperature transmitter and the second temperature gauge, and the second pressure transmitter and the second pressure gauge are respectively and adjacently installed, and the two devices test the state parameters of the same area.
Furthermore, the electromagnetic valve is in a normally closed state and is electrified to be opened, and when a process problem or operation fault occurs to the pipeline, the electromagnetic valve is controlled to be cut off by one key through P L C.
Furthermore, the range of the first pressure transmitter and the first pressure gauge, the range of the second pressure transmitter and the range of the second pressure gauge are both 0-16 bar, and the medium temperature range is-20-80 ℃; the output current range of the second pressure transmitter and the output current range of the second pressure transmitter are 4-20 mA.
Furthermore, the ranges of the first temperature transmitter and the first thermometer and the ranges of the second temperature transmitter and the second thermometer are-20-60 ℃, and the penetration lengths of the thermocouples are the same and are 40 mm; the output current range of the first temperature transmitter and the second temperature transmitter is 4-20 mA.
Furthermore, the output power of the turbine power generation equipment is within 5KW, and the main body of the power generation equipment is a motor; the storage battery is a lead-acid valve-controlled storage battery, the nominal voltage is 12V, the capacity is 100Ah, and the two are connected in series.
Furthermore, the hose is made of stainless steel, the filter is a stainless steel Y-shaped filter, the nominal diameter of the filter is DN25, the mesh number of the filter is 80, and the use temperature of the filter is less than or equal to 150 ℃.
Furthermore, the combustible gas alarm is arranged at a position where a pipeline is easy to leak, the analog signal current range is 4-20 mA, and the measuring range is 0-100% L E L.
Furthermore, the testing range of the flowmeter is 16-1000 m3The nominal diameter is DN50, the nominal pressure is PN10, and the test precision is 1.0%;
the P L C is further used for counting the running power of the turbine power generation equipment in real time, controlling the charging voltage of the storage battery to be 24-28V and the charging current to be 5-10A, and sending a signal for cutting off the electromagnetic valve to the electromagnetic valve when the combustible gas alarm detects that the gas concentration in the air reaches 25% L E L.
Compare current technology, the utility model discloses an advantage is embodied at:
1. the utility model discloses provide a test system special to little miniature natural gas pressure energy power generation facility for the first time, the test content includes output power quality, device leakproofness, device operating stability etc. covers fields such as electric power, technology, life and environmental impact.
2. The utility model discloses increased the automatic control teletransmission technique in the test, the system can be intensive, timely conveying control maincenter in the operational parameter of operation in-process, improved information acquisition efficiency and control degree, help the testing process more convenient, test structure is more accurate.
3. The utility model discloses the data acquisition point distribution logicality of selecting in the test is strong, mainly concentrates on pipeline linking department, power generating equipment around and the easy undulant department of technological parameter, guarantees that the data of gathering are more worth the nature.
4. The utility model discloses not only can be after the test procedure finishes, propose the correction suggestion to the problem and the trouble in the operation process, more can obtain the interval parameter that is fit for the device operation according to the data analysis that the test procedure obtained.
Drawings
Fig. 1 is the utility model discloses a small and miniature natural gas pressure energy electricity generation test platform's of embodiment structural schematic.
The figure shows 1-a first pressure regulator, 2-a first stop valve, 3-a solenoid valve, 4-a flow meter, 5-a first temperature meter, 6-a first temperature transmitter, 7-a first pressure gauge, 8-a first pressure transmitter, 9-a ball valve, 10-a second stop valve, 11-a filter, 12-a hose, 13-a turbine power generation device, 14-a combustible gas alarm, 15-a storage battery, 16-a second pressure transmitter, 17-a second pressure gauge, 18-a second temperature transmitter, 19-a second temperature meter, 20-a second pressure regulator, 21-a third pressure gauge, 22-a flow regulating valve and 23-P L C.
Detailed Description
The technical solution of the present invention will now be clearly described, and with reference to the accompanying drawings, the purpose, technical solution and advantages of the present implementation method are more vivid and intuitive, but the embodiments of the present invention are not limited thereto. The process parameters, which are not specifically noted, can be carried out with reference to conventional techniques.
As shown in fig. 1, a small micro natural gas pressure energy power generation test platform includes:
the system comprises a first pressure regulator 1, a first stop valve 2, an electromagnetic valve 3, a flowmeter 4, a filter 11, turbine power generation equipment 13, a second pressure regulator 20 and a flow regulating valve 22 which are connected in sequence through pipelines;
the monitoring system comprises a first thermometer 5, a first temperature transmitter 6, a first pressure gauge 7 and a first pressure transmitter 8 which are connected with a pipeline between the flow meter 4 and the turbine power generation equipment 13 in a bypassing manner, and a second pressure transmitter 16, a second pressure gauge 17, a second temperature transmitter 18 and a second thermometer 19 which are connected with a pipeline between the turbine power generation equipment 13 and a second pressure regulator 20 in a bypassing manner; a third pressure gauge 22 which is connected by-pass to the pipeline between the second pressure regulator 20 and the flow regulating valve 22;
the storage battery 15 is connected with the electric power output end of the turbine power generation equipment 13 through a circuit;
the safety guarantee system comprises a ball valve 9 and a second stop valve 10 which are connected with a pipeline in a bypassing way, hoses 12 respectively connected with an air inlet and an air outlet of the turbine power generation equipment 13, and a combustible gas alarm 14 arranged on the pipeline;
and the P L C23 is in signal connection with the electromagnetic valve 3, the flowmeter 4, the first temperature transmitter 6, the first pressure transmitter 8, the turbine power generation equipment 13, the combustible gas alarm 14, the storage battery 15, the second pressure transmitter 16 and the second temperature transmitter 18 through circuits respectively, so that data transmission is realized.
Specifically, the gas flow of the gas pipeline is 200Nm3Within the per hour, the air inlet pressure is not higher than 8bar, and the air inlet temperature is set to be normal temperature.
Specifically, the first temperature transmitter 6 and the first temperature gauge 5, the first pressure transmitter 8 and the first pressure gauge 7, the second temperature transmitter 18 and the second temperature gauge 19, and the second pressure transmitter 16 and the second pressure gauge 17 are respectively and adjacently installed, and the two devices test the state parameters of the same area, so that the synchronous display and sharing of data at the site and the control center are realized.
Specifically, the ranges of the first temperature transmitter 6 and the first temperature meter 5, and the ranges of the second temperature transmitter 18 and the second temperature meter 19 are-20-60 ℃, and the penetration lengths of the thermocouples are the same and are 40 mm; the output current range of the first temperature transmitter 6 and the second temperature transmitter 18 is 4-20 mA.
Specifically, the ranges of the first pressure transmitter 8 and the first pressure gauge 7, and the ranges of the second pressure transmitter 16 and the second pressure gauge 17 are all 0-16 bar, and the medium temperature range is-20-80 ℃; the output current range of the first pressure transmitter 8 and the second pressure transmitter 16 is 4-20 mA.
Specifically, when the remote indication fluctuation range of the first pressure transmitter 8 is too large, the upstream first pressure regulator 1 needs to be adjusted, the signal transmitted by the flowmeter 4 is related to P L C23, and the test range is 16-1000 m3Nominal diameter DN50, nominalThe pressure was PN10 and the test accuracy was 1.0%.
When the telemetric fluctuation range of the flow meter is large, the upstream first stop valve 2 needs to be adjusted.
Specifically, the electromagnetic valve 3 is in a normally closed state and is opened after being electrified, and when a process problem or operation fault occurs in a pipeline, the P L C23 controls the electromagnetic valve to be cut off by one key.
Specifically, the filter 11 is a stainless steel Y-shaped filter, the nominal diameter is DN25, the mesh number is 80, and the use temperature is not higher than 150 ℃.
Specifically, the hoses 12 attached to the front and rear ends of the turbine power generation unit 13 are made of stainless steel.
Specifically, the ball valve 9 and the second stop valve 10 are both manual and are sequentially installed on the bleeding branch; when the electromagnetic valve 3 is cut off by one key, the gas in the pipeline is discharged by using the discharging branch.
Specifically, the battery 15 is a lead-acid valve-regulated battery, the nominal voltage is 12V, the capacity is 100Ah, and the two batteries are connected in series.
Specifically, the combustible gas alarm 14 is installed on a process pipeline easy to leak, the current range of an analog signal is 4-20 mA, the range is 0-100% L E L, and when the concentration of fuel gas in the air reaches 25% L E L, the alarm is connected with P L C23 to send out a signal for cutting off an electromagnetic valve.
Specifically, the output power of the power generation equipment 13 is within 5KW, the main body of the power generation equipment is a motor, and the information data is associated with P L C, so that the timely transmission of the working conditions can be realized.
Specifically, the output power of the power generation equipment 13 is within 5KW, the main body of the power generation equipment is a motor, the P L C23 is in signal correlation with the power generation equipment 13 and a storage battery through leads, the P L C23 can count the power generation power of the power generation equipment in real time when the power generation equipment 13 runs, and the storage battery 15 is in correlation with the P L C23 and controls the charging voltage to be 24-28V and the charging current to be 5-10A.
Specifically, flow control valve 22 be located the gas export before, cooperate the common flow and the pressure of stabilizing export gas of second voltage regulator, realize with the seamless connection of low reaches gas pipe network.
The device that the pipeline process system of this embodiment contained carries out a plurality of data point tests to test platform, realizes the regulation and the real-time data display of operation in-process gas operating mode.
The automatic control system of this embodiment includes accessories such as instrument valve, carries out a plurality of data point monitoring to test platform, realizes the control and the data teletransmission of operation in-process gas operating mode.
This embodiment is to the influence of present miniature pressure energy power generation facility's design and operation effect, designs a test platform that testing range is big, the function is sound, can survey power generation facility's output power parameter, system operation parameter etc. simultaneously to carry out analysis and diagnosis to the problem that appears, accomplish a power generation facility's comprehensive evaluation, its concrete theory of operation and process are as follows:
the fuel gas process part: the natural gas enters and exits from the gas inlet of the pipeline, the gas inlet parameter is 8bar, the temperature is normal temperature, and the flow rate is 120Nm3And h, regulating and stabilizing the flow and pressure by a pressure regulator, filtering out particulate matters and gas impurities in the gas by a filter, and feeding the gas into power generation equipment through a hose. After the gas does work in the power generation equipment, the pressure and the flow are stabilized by the hose, the gas is regulated to a proper outlet pressure by the pressure regulator and is discharged from the gas outlet.
And instrument field display data are arranged on the pipeline parts before and after the power generation equipment. In order to obtain more accurate data at the outlet of the power generation equipment, a hose with the functions of stabilizing flow and pressure is arranged behind an instrument; in order to accurately control the pressure of the gas outlet to meet the downstream working condition, a stop valve is installed at the outlet for control.
The automatic control and data remote transmission part is characterized in that after fuel gas is input and stabilized from a gas inlet, the flow meter, the temperature transmitter and the pressure transmitter transmit the data to the control center P L C, and after the fuel gas is output from the power generation equipment, the temperature transmitter and the pressure transmitter transmit the real-time fuel gas parameters after work is done to the P L C.
Once the power generation device has operation failure or air leakage and other problems, the combustible gas alarm gives an alarm in time, the P L C23 controls the electromagnetic valve 3 to close the system in time, and the diffusing branch is responsible for safely discharging fuel gas in the pipeline.
A power output section: the gas enters the power generation equipment to drive the motor to rotate for power generation, the power is transmitted to the load storage battery through the conducting wire, and the power quality and the output efficiency are judged through observation.
The power generation equipment is associated with P L C23, and P L C23 monitors and measures output current, output voltage and output power when the motor rotates to output power.
The P L C23 classifies the collected huge data into process operation parameters and power output parameters, utilizes origin software to draw non-state parameters changing along with time, deduces the change process and analyzes the change trend of the non-state parameters, and needs to analyze the mutation reason of other parameters with sensitivity requirements while judging the change trend.
The working process of the embodiment is further described below with reference to specific examples:
the test conditions adopted in the present embodiment mainly include: the gas inlet pressure is 7.8-8 bar gauge pressure, the gas inlet temperature is 17-20 ℃, and the flow is 200Nm3And the P L C-end data keeps real-time data receiving, one group of data is updated every half an hour, the test period is 5 hours, and the test can be carried out for 3-5 periods.
1. The fuel gas pressure reduction process flow comprises the following steps:
1 initial stage
8bar fuel gas which is branched out from an upstream pipe network and subjected to pressure regulation enters a test system through an inlet, at the moment, the fluctuation of a flowmeter displayed at the P L C23 end and the remote readings of a temperature transmitter and a pressure transmitter is large, and the charging parameters of the storage battery 15 also have large fluctuation compared with the normal charging state.
And adjusting the voltage regulator according to the fluctuation trend of the data displayed by remote transmission, and starting to record the data after the fluctuation of the indication of the remote transmission instrument tends to be stable.
2 testing phase
The control center P L C23 is responsible for collecting data, namely gas records the gas flow at the moment through a flowmeter, records the temperature and the pressure at the moment through a first temperature transmitter and a first pressure transmitter, after the gas is purified through a filter, the gas flows through a hose to reduce flow fluctuation and then enters the turbine power generation equipment 13 to be expanded and generated, the gas flows out of the power generation equipment, flows through a second pressure transmitter and a second temperature transmitter to record the temperature and the pressure at the moment, then the flow is stabilized through the hose and a flow regulating valve, the pressure is controlled by a pressure regulator, the gas operation working condition of a downstream pipe network is met, and the seamless connection of the power generation process and.
3 shutdown phase
In the process of gas operation, leakage occurs, a combustible gas alarm gives an alarm, even when the alarm is fed back to P L C to cut off the electromagnetic valve by one key, the test process needs to be forcibly stopped, at the moment, a bleeding branch needs to be started to diffuse the gas in the pipeline, a ball valve and a second stop valve are opened, and after the concentration of the gas in the pipeline is reduced to be below 3%, the whole test system is overhauled;
after the battery 15 is charged, the signal P L C23 receives, and after all the battery is properly charged, the electromagnetic valve 3 is closed by one key under the condition of ensuring the safety, and the air inlet process is cut off.
2. A power generation flow:
the gas of 8bar enters the turbine power generation device 13, expands and reduces the pressure and drives the motor generator to generate power, an electric signal is transmitted to the control center P L C, the power is transmitted to the storage battery to be charged, the storage battery 15 is associated with the P L C23, and charging dynamic parameters and charging time are recorded in real time.
And changing the test condition, changing the air inlet pressure or flow, and re-detecting according to the steps to obtain corresponding data.
3. Data integration analysis process:
and (3) sorting the data stored in the database, and analyzing the correlation and linear relation of the following variables:
linear relationship of both flow-pressure drop; flow-pressure drop-power, and an optimized interval; a maximum value and a stable value of the temperature drop; flow-voltage drop-optimum interval for charging current, voltage, etc.
And analyzing the noise influence and the motor rotating speed data of the power generation system by means of a decibel meter and a velocimeter, and comparing and analyzing the data with the parameters.
And (4) sorting the analysis results, testing and optimizing the power generation process to obtain a power generation optimization interval.
The above embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a small and miniature natural gas pressure energy electricity generation test platform which characterized in that includes:
the system comprises a first pressure regulator (1), a first stop valve (2), an electromagnetic valve (3), a flowmeter (4), a filter (11), turbine power generation equipment (13), a second pressure regulator (20) and a flow regulating valve (22) which are connected in sequence through pipelines;
the monitoring system comprises a first thermometer (5), a first temperature transmitter (6), a first pressure gauge (7) and a first pressure transmitter (8) which are connected with a pipeline between the flowmeter (4) and the turbine power generation equipment (13) in a bypassing manner, and a second pressure transmitter (16), a second pressure gauge (17), a second temperature transmitter (18) and a second thermometer (19) which are connected with a pipeline between the turbine power generation equipment (13) and the second pressure regulator (20) in a bypassing manner; a third pressure gauge (21) which is connected by-pass with the pipeline between the second pressure regulator (20) and the flow regulating valve (22);
the storage battery (15) is connected with the power output end of the turbine power generation equipment (13) through a circuit;
the safety guarantee system comprises a ball valve (9) and a second stop valve (10) which are connected with a pipeline in a bypassing manner, hoses (12) which are respectively connected with an air inlet and an air outlet of the turbine power generation equipment (13), and a combustible gas alarm (14) arranged on the pipeline;
and the P L C (23) is in signal connection with the electromagnetic valve (3), the flowmeter (4), the first temperature transmitter (6), the first pressure transmitter (8), the turbine power generation equipment (13), the combustible gas alarm (14), the storage battery (15), the second pressure transmitter (16) and the second temperature transmitter (18) through circuits respectively.
2. The small micro natural gas pressure energy power generation test platform as claimed in claim 1, wherein the first temperature transmitter (6) and the first temperature gauge (5), the first pressure transmitter (8) and the first pressure gauge (7), the second temperature transmitter (18) and the second temperature gauge (19), and the second pressure transmitter (16) and the second pressure gauge (17) are respectively installed adjacently, and the two devices test the state parameter of the same region.
3. The small micro natural gas pressure energy power generation test platform as claimed in claim 1, wherein the electromagnetic valve (3) is in a normally closed state, is powered on and is opened, and when a process problem or operation failure occurs in a pipeline, the electromagnetic valve (3) is controlled to be cut off by one key through P L C (23).
4. The small micro natural gas pressure energy power generation test platform as claimed in claim 1, wherein the first pressure transmitter (8), the first pressure gauge (7), the second pressure transmitter (16) and the second pressure gauge (17) have the range of 0-16 bar, and the medium temperature range is-20-80 ℃; the output current range of the second pressure transmitter (16) and the output current range of the second pressure transmitter (16) are 4-20 mA.
5. The small micro natural gas pressure energy power generation test platform as claimed in claim 1, wherein the first temperature transmitter (6), the first temperature meter (5), the second temperature transmitter (18) and the second temperature meter (19) have the measuring ranges of-20-60 ℃, and the thermocouples have the same penetration length of 40 mm; the output current range of the first temperature transmitter (6) and the second temperature transmitter (18) is 4-20 mA.
6. The small micro natural gas pressure energy power generation test platform as claimed in claim 1, wherein the output power of the turbine power generation equipment (13) is within 5KW, and the main body of the power generation equipment is a motor; the storage battery (15) is a lead-acid valve-regulated storage battery, the nominal voltage is 12V, the capacity is 100Ah, and the two are connected in series.
7. The small micro natural gas pressure energy power generation test platform as claimed in claim 1, wherein the hose (12) is made of stainless steel, the filter (11) is a stainless steel Y-shaped filter, the nominal diameter of the filter is DN25, the mesh number of the filter is 80, and the use temperature of the filter is less than or equal to 150 ℃.
8. The small micro natural gas pressure energy power generation test platform as claimed in claim 1, wherein the combustible gas alarm (14) is installed at a position where a pipeline is prone to leakage, and the analog signal current range is 4-20 mA, and the measuring range is 0-100% L E L.
9. The small micro natural gas pressure energy power generation test platform as claimed in claim 1, wherein the test range of the flowmeter (4) is 16-1000 m3The nominal diameter is DN50, the nominal pressure is PN10, and the test precision is 1.0%.
10. The small micro natural gas pressure energy power generation test platform as claimed in claim 1, wherein the P L C (23) is used for counting the running power generation of the turbine power generation equipment (13) in real time, controlling the charging voltage of the storage battery (15) to be 24-28V and the charging current to be 5-10A, and sending a signal for cutting off the electromagnetic valve to the electromagnetic valve (3) when the combustible gas alarm (14) detects that the gas concentration in the air reaches 25% L E L.
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Effective date of registration: 20230609 Address after: 510640 No. five, 381 mountain road, Guangzhou, Guangdong, Tianhe District Patentee after: SOUTH CHINA University OF TECHNOLOGY Patentee after: Foshan huanshengtong New Energy Technology Co.,Ltd. Address before: 510640 No. five, 381 mountain road, Guangzhou, Guangdong, Tianhe District Patentee before: SOUTH CHINA University OF TECHNOLOGY Patentee before: GUANGDONG ZHONGTONGLIHUA ENERGY TECHNOLOGY Co.,Ltd. |