Gas self-protection and load prediction system and method

Abstract

The application discloses a kind of gas self-protection and load prediction system and method, belong to gas supply and transport and distribution technical field, system includes gas meter protection unit and gas load prediction unit, gas meter protection unit is located on the gas pipeline that is communicated with boiler, gas meter protection unit is connected with gas load prediction unit by central control box, can realize the transmission of data signal;The control cabinet of boiler is connected with central control box, and the gas meter is protected when boiler gas stops supply.This application installs gas meter protection unit on gas pipeline, plays a protective role to gas meter when stopping supply boiler gas, prolongs its service life;Meanwhile, according to gas load prediction unit, the gas load is predicted, and then the supply amount of gas is controlled by central control box, realize the high-precision prediction of gas, help to improve the safety performance of gas supply, on-demand gas supply saves energy.

Description

Technical Field

[0001] This invention belongs to the field of gas supply and distribution technology, and particularly relates to a gas self-protection and load prediction system and method. Background Technology

[0002] Currently, in existing boiler gas supply systems, the instantaneous shut-off of gas valves when the boiler shuts down can cause water hammer in the gas pipeline. Over time, this water hammer can lead to a gradual decrease in the accuracy of gas meters and even damage to the instruments. Furthermore, gas suppliers need to predict future gas loads to control future gas supply and reduce gas costs. Therefore, gas load forecasting is crucial for gas suppliers, especially after the implementation of pre-sale gas systems. Based on this, protecting gas meters and maintaining their high accuracy is of great significance for the safety and reliability of gas supply and for load forecasting. Summary of the Invention

[0003] The purpose of this invention is to provide a gas self-protection and load prediction system and method, which aims to solve the technical problems of poor metering accuracy or damage to gas meters caused by boiler shutdown and gas interruption in the prior art, as well as inaccurate load prediction.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] A gas self-protection and load prediction system includes a gas meter protection unit and a gas load prediction unit. The gas meter protection unit is installed on the gas pipeline connected to the boiler to protect the gas metering instruments. The gas load prediction unit is used to predict the gas load. The gas meter protection unit and the gas load prediction unit are connected through a central control box to transmit data signals. The boiler control cabinet is connected to the gas meter protection unit through the central control box to protect the gas meters when the boiler gas supply is interrupted.

[0006] Preferably, the gas meter protection unit includes a gas meter, a first valve, a second valve, a third valve, and a constant-pressure gas storage device. The gas meter, the third valve, and the first valve are sequentially arranged on the gas pipeline. The outlet end of the first valve is connected to the boiler. A bypass pipeline connected to the constant-pressure gas storage device is provided between the first valve and the third valve. The second valve is arranged on the bypass pipeline. A first pressure sensor is provided on the gas pipeline between the gas meter and the third valve. A second pressure sensor is provided on the constant-pressure gas storage device. The gas meter, the first valve, the second valve, the third valve, the first pressure sensor, and the second pressure sensor are all connected to the central control box via data lines. The gas meter, the first pressure sensor, and the second pressure sensor can transmit gas consumption data and pressure data on the gas pipeline and in the constant-pressure gas storage device to the central control box. The central control box can output opening and closing commands to the first valve, the second valve, and the third valve.

[0007] Preferably, the gas meter is a gas metering instrument.

[0008] Preferably, the constant pressure gas storage device includes an outer shell and an inner liner, the inner liner being disposed inside the outer shell, the second pressure sensor and the second valve being connected to the inner liner, and the outer shell being provided with an exhaust valve.

[0009] Preferably, the first valve, the second valve, and the third valve are all solenoid valves.

[0010] Preferably, the gas load forecasting unit includes a meteorological monitoring component, a switch, and a server with a built-in load forecasting program. The meteorological monitoring component is connected to the central control box via a data cable for transmitting meteorological data to the central control box. The central control box is connected to the server via the switch for forecasting gas load based on future meteorological data.

[0011] Preferably, the meteorological monitoring component includes a temperature sensor, a humidity sensor, a wind speed sensor, and a solar radiation sensor.

[0012] This invention also provides a gas self-protection and load prediction method, which employs the above-mentioned gas self-protection and load prediction system and includes the following:

[0013] The gas meter, first pressure sensor, second pressure sensor, third valve, second valve, first valve, temperature sensor, humidity sensor, wind speed sensor, and solar radiation sensor transmit data in real time to the server via the central control box and switch.

[0014] Under normal gas supply conditions, the first and third valves are open, and the second valve is closed;

[0015] When the boiler control cabinet sends a command to the central control box to close the first valve, the central control box simultaneously sends a command to open the second valve, thus achieving the simultaneous closure of the first valve and opening of the second valve; the gas originally supplied to the gas boiler flows into the inner tank of the constant pressure gas storage device through the second valve, thereby reducing the water hammer phenomenon caused by the closure of the first valve; when the system reaches balance, the third valve is closed.

[0016] When the boiler needs gas, the first valve opens and the second valve opens, at which time the gas in the constant pressure gas storage device is delivered to the boiler; when the pressure in the constant pressure gas storage device is lower than the pressure value of the first pressure sensor on the gas pipeline, the second valve closes and the third valve opens, at which time the gas flows through the third valve and the first valve to supply gas to the boiler.

[0017] The gas meter records gas consumption data, pressure data in the constant pressure gas storage device, and data from temperature sensors, humidity sensors, wind speed sensors, and solar radiation sensors. These data are transmitted to the server via a central control box and switch. The server's built-in load forecasting program processes the data and forecasts gas load based on future weather data.

[0018] The beneficial effects of adopting the above technical solution are as follows: Compared with the prior art, the present invention, by installing a gas meter protection unit on the gas pipeline connected to the boiler, can protect the gas meter when the boiler control cabinet stops the gas supply through the central control box, thus extending its service life; at the same time, it can predict the gas load based on the gas load prediction unit, and then control the gas supply through the central control box, thereby achieving high-precision gas prediction, which helps to improve the safety performance of gas supply, supply gas on demand, and save energy. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a schematic diagram of the structure of a gas self-protection and load prediction system provided in an embodiment of the present invention;

[0021] In the diagram: 00-Boiler, 01-Gas Pipeline, 02-Bypass Pipeline; 1-Central Control Box, 21-First Valve, 22-Second Valve, 23-Third Valve; 3-Constant Pressure Gas Storage Device, 31-Outer Shell, 32-Inner Tank, 33-Exhaust Valve; 41-First Pressure Sensor, 42-Second Pressure Sensor; 5-Gas Meter; 6-Exchanger, 7-Server; 8-Temperature Sensor, 9-Humidity Sensor, 10-Wind Speed ​​Sensor, 11-Solar Radiation Sensor; 12-Control Cabinet. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] See Figure 1 The present invention provides a gas self-protection and load prediction system, which includes a gas meter protection unit and a gas load prediction unit. The gas meter protection unit is installed on the gas pipeline 01 connected to the boiler 00 and is used to protect the gas meter 5. The gas load prediction unit is used to predict the gas load. The gas meter protection unit and the gas load prediction unit are connected through a central control box 1 to realize the transmission of data signals. The control cabinet 12 of the boiler 00 is connected to the central control box 1 and is used to protect the gas meter 5 when the boiler gas supply stops.

[0024] In the specific design, the gas meter protection unit includes a gas meter 5, a first valve 21, a second valve 22, a third valve 23, and a constant pressure gas storage device 3. The gas meter 5, the third valve 23, and the first valve 21 are sequentially arranged on the gas pipeline 01. The outlet end of the first valve 21 is connected to the boiler 00. A bypass pipeline 02 connected to the constant pressure gas storage device 3 is provided between the first valve 21 and the third valve 23. The second valve 22 is arranged on the bypass pipeline 02. A first pressure sensor 41 is provided on the gas pipeline 01 between the gas meter 5 and the third valve 23. The constant-pressure gas storage device 3 is equipped with a second pressure sensor 42. The gas meter 5, first valve 21, second valve 22, third valve 23, first pressure sensor 41, and second pressure sensor 42 are all connected to the central control box 1 via data cables. The gas meter 5, first pressure sensor 41, and second pressure sensor 42 transmit gas consumption data and pressure data from the gas pipeline 01 and the constant-pressure gas storage device 3 to the central control box 1 via data cables. The central control box 1 outputs opening and closing commands to the first valve 21, second valve 22, and third valve 23 via data cables. This structure enables automatic gas supply and utilizes the constant-pressure gas storage device to buffer high-pressure gas in the gas pipeline, thereby protecting the gas meter.

[0025] The gas meter 5 is a gas metering instrument that can measure gas consumption online. Of course, gas meters are not limited to metering instruments and can also include other types of instruments.

[0026] In one specific embodiment of the present invention, such as Figure 1As shown, the constant pressure gas storage device 3 includes an outer shell 31 and an inner liner 32. The inner liner 32 is disposed inside the outer shell 31. The second pressure sensor 42 and the second valve 22 are both connected to the inner liner 32. An exhaust valve 33 is provided on the outer shell 31. At the moment the gas supply stops, the high-pressure gas in the gas pipeline will enter the inner liner through the bypass pipeline. The inner liner has the function of buffering the gas, thereby reducing the pressure in the gas pipeline and preventing damage to the gas meter.

[0027] As a preferred embodiment, the first valve 21, the second valve 22, and the third valve 23 are all solenoid valves. Alternatively, directional valves or pneumatic valves can also be used, and the appropriate specifications can be selected according to the actual situation.

[0028] In one specific embodiment of the present invention, such as Figure 1 As shown, the gas load forecasting unit includes a meteorological monitoring component, a switch 6, and a server 7 with a built-in load forecasting program. The meteorological monitoring component is connected to the central control box 1 via a data cable for transmitting meteorological data to the central control box 1. The central control box 1 is connected to the server 7 via the switch 6 for forecasting gas load based on future meteorological data. The meteorological monitoring component includes a temperature sensor 8, a humidity sensor 9, a wind speed sensor 10, and a solar radiation sensor 11. Of course, the meteorological monitoring component can also include other monitoring instruments, selected according to actual needs.

[0029] This invention also provides a gas self-protection and load prediction method, which employs the above-mentioned gas self-protection and load prediction system and specifically includes the following:

[0030] The gas meter 5, first pressure sensor 41, second pressure sensor 42, third valve 23, second valve 22, first valve 21, temperature sensor 8, humidity sensor 9, wind speed sensor 10, and solar radiation sensor 11 transmit data in real time to the server 7 via the central control box 1 and the switch 6.

[0031] Under normal gas supply conditions, the first valve 21 and the third valve 23 on gas pipeline 01 are open, and the second valve 22 on bypass pipeline 02 is closed.

[0032] When the control cabinet 12 of the boiler 00 sends a command to the central control box 1 to close the first valve 21, the central control box 1 simultaneously sends a command to open the second valve 22, thereby achieving the simultaneous closure of the first valve 21 and opening of the second valve 22; the gas originally supplied to the gas boiler 00 flows into the inner tank 32 of the constant pressure gas storage device 3 through the second valve 22, thereby reducing the water hammer phenomenon caused by the closure of the first valve 21; when the system reaches balance, the third valve 23 is closed;

[0033] When boiler 00 needs gas supply, the first valve 21 and the second valve 22 are opened, and the gas in the constant pressure gas storage device 3 is delivered to boiler 00. When the pressure in the constant pressure gas storage device 3 is lower than the pressure value of the first pressure sensor 41 on the gas pipeline 01, the second valve 22 is closed and the third valve 23 is opened. At this time, the gas flows through the third valve 23 and the first valve 21 on the gas pipeline 01 to supply gas to boiler 00.

[0034] The gas meter 5 transmits the recorded gas consumption data, pressure data in the constant pressure gas storage device 3, and data from the temperature sensor 8, humidity sensor 9, wind speed sensor 10, and solar radiation sensor 11 to the server 7 via the central control box 1 and the switch 6. The data is processed by the load prediction program built into the server 7, and the gas load is predicted based on future meteorological data, thereby improving the metering accuracy of gas supply.

[0035] In summary, this invention has the advantages of reasonable design and high degree of automation. It can protect gas meters, improve the accuracy of gas consumption measurement, and, by combining recorded weather and meteorological parameters with future weather and meteorological parameters, achieve high-precision prediction of gas demand, which helps to achieve safe and on-demand gas supply.

[0036] Many specific details have been set forth in the foregoing description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed above.

Claims

1. A gas self-protection and load prediction method, characterized in that, A gas self-protection and load prediction system is adopted, which includes a gas meter protection unit and a gas load prediction unit. The gas meter protection unit is installed on the gas pipeline connected to the boiler to protect the gas metering instruments. The gas load prediction unit is used to predict the gas load. The gas meter protection unit and the gas load prediction unit are connected through a central control box to realize data signal transmission. The boiler control cabinet is connected to the gas meter protection unit through the central control box to protect the gas meters when the boiler gas supply is stopped. The gas meter protection unit includes a gas meter, a first valve, a second valve, a third valve, and a constant-pressure gas storage device. The gas meter, the third valve, and the first valve are sequentially installed on the gas pipeline. The outlet end of the first valve is connected to the boiler. A bypass pipeline connected to the constant-pressure gas storage device is provided between the first valve and the third valve. The second valve is installed on the bypass pipeline. A first pressure sensor is installed on the gas pipeline between the gas meter and the third valve. A second pressure sensor is installed on the constant-pressure gas storage device. The gas meter, the first valve, the second valve, the third valve, the first pressure sensor, and the second pressure sensor are all connected to the central control box via data lines. The gas meter, the first pressure sensor, and the second pressure sensor can transmit gas consumption data and pressure data on the gas pipeline and in the constant-pressure gas storage device to the central control box. The central control box can output opening and closing commands to the first valve, the second valve, and the third valve. The gas load forecasting unit includes a meteorological monitoring component, a switch, and a server with a built-in load forecasting program. The meteorological monitoring component is connected to the central control box via a data cable and is used to transmit meteorological data to the central control box. The central control box is connected to the server via a switch and is used to forecast the gas load based on future meteorological data. The meteorological monitoring components include a temperature sensor, a humidity sensor, a wind speed sensor, and a solar radiation sensor. The prediction methods include the following: The gas meter, first pressure sensor, second pressure sensor, third valve, second valve, first valve, temperature sensor, humidity sensor, wind speed sensor, and solar radiation sensor transmit data in real time to the server via the central control box and switch. Under normal gas supply conditions, the first and third valves are open, and the second valve is closed; When the boiler control cabinet sends a command to the central control box to close the first valve, the central control box simultaneously sends a command to open the second valve, thus achieving the simultaneous closure of the first valve and opening of the second valve; the gas originally supplied to the gas boiler flows into the inner tank of the constant pressure gas storage device through the second valve; when the system reaches balance, the third valve is closed; When the boiler needs gas, the first valve opens and the second valve opens, at which time the gas in the constant pressure gas storage device is delivered to the boiler; when the pressure in the constant pressure gas storage device is lower than the pressure value on the gas pipeline, the second valve closes and the third valve opens, at which time the gas flows through the third valve and the first valve to supply gas to the boiler. The gas meter records gas consumption data, pressure data in the constant pressure gas storage device, and data from temperature sensors, humidity sensors, wind speed sensors, and solar radiation sensors. These data are transmitted to the server via a central control box and switch. The server's built-in load forecasting program processes the data and forecasts gas load based on future weather data.

2. The gas self-protection and load prediction method according to claim 1, characterized in that: The gas meter is a gas metering instrument.

3. The gas self-protection and load prediction method according to claim 1, characterized in that: The constant pressure gas storage device includes an outer shell and an inner liner. The inner liner is located inside the outer shell. The second pressure sensor and the second valve are both connected to the inner liner. The outer shell is provided with an exhaust valve.

4. The gas self-protection and load prediction method according to claim 1, characterized in that: The first valve, the second valve, and the third valve are all solenoid valves.

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