Combustion engine with natural gas leakage detection function

Abstract

The utility model relates to a burner with natural gas leakage detection function, which comprises a mixing cylinder (1), a fan (3), a fuel gas input solenoid valve mechanism (4) and a controller (6), the fan (3) is used for inputting air into the mixing cylinder (1), the fuel gas input solenoid valve mechanism (4) is used for inputting fuel gas into the mixing cylinder (1), and the controller (6) is used for controlling the mixing cylinder (1). An input port and an output port of the fuel gas input electromagnetic valve mechanism (4) are each provided with an electromagnetic valve, the electromagnetic valves are used for controlling opening or closing of the input port and the output port, and the input port and the output port are each provided with a gas pressure sensor. The controller (6) is used for obtaining gas pressure signal data at the two ends of the gas input electromagnetic valve mechanism (4) and judging whether gas leaks or not according to the signal data.

Description

Technical Field

[0001] The utility model relates to a burner, in particular to a burner with a solenoid valve and a function of detecting leakage of pipeline natural gas. Background Art

[0002] A burner is a device that mixes fuel and air in a specific manner and burns them. According to their designs and usage scenarios, burners can be classified into industrial, household, and other special types of burners. These devices are usually made of materials such as stainless steel or titanium metal, which are not only corrosion-resistant but also able to withstand high-temperature environments. The general working principle of a burner is to mix gas and air and then send them into the burner, and then ignite to generate a flame, which then enters the combustion chamber for a full combustion process.

[0003] Since gas is an inflammable and explosive gas source, it is necessary to prevent its leakage. However, the existing technology generally detects leakage after it occurs, that is, a gas detection sensor is set outside the burner. In this way, generally, leakage needs to reach a certain degree, that is, the gas outside reaches a certain concentration before detection can be carried out, resulting in a certain degree of danger. Content of the Utility Model

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a burner that can conveniently detect the leakage of the burner during the gas transmission process.

[0005] The technical solution of the utility model is as follows:

[0006] A burner with a function of detecting natural gas leakage, including a mixing cylinder (1), a blower (3), a gas input solenoid valve mechanism (4), and a controller (6). The blower (3) is used to input air into the mixing cylinder (1), and the gas input solenoid valve mechanism (4) is used to input gas into the mixing cylinder (1). It is characterized in that: the controller (6) is used to obtain the gas pressure signal data at both ends of the gas input solenoid valve mechanism (4) and judge whether gas leaks according to the signal data.

[0007] Further, solenoid valves are arranged at both the input port and the output port of the gas input solenoid valve mechanism (4). The solenoid valves are used to control the opening or closing of the input port and the output port. Gas pressure sensors are arranged at both the input port and the output port. The controller (6) is used to receive the gas pressure signals sent by the gas pressure sensors and judge whether gas leaks according to the pressure signal difference.

[0008] Further, after the controller (6) judges that gas leaks, it also controls the solenoid valve to close the input port; after the controller (6) judges that gas leaks, it also sends an alarm signal to an external device.

[0009] Furthermore, a temperature sensor (107) is externally connected to the mixing cylinder (1). The temperature sensor (107) is used to monitor the ambient temperature outside the burner. The controller (6) is connected to the temperature sensor (107), and the controller (6) is configured to determine whether to close the gas input solenoid valve mechanism (4) according to the temperature information obtained by the temperature sensor (107).

[0010] Furthermore, the gas pressure sensor is connected to the controller (6) through a signal line (402).

[0011] Furthermore, the fan (3) is connected to the mixing cylinder (1) through an air input pipe (2);

[0012] The gas input solenoid valve mechanism (4) is connected to a gas input chamber (404) through a gas delivery pipe (401), and the gas input chamber (404) is connected to the mixing cylinder (1).

[0013] Furthermore, a motor (5) is included. The motor (5) synchronously drives the rotation of an air baffle (507) inside the air input pipe (2) and a gas port stopper (5041) inside the gas input chamber (404) through a linkage mechanism to adjust the air flow rate input into the air input pipe (2) and the gas flow rate input into the gas delivery pipe (401).

[0014] Furthermore, the linkage mechanism includes a first rotating arm (5) connected to the driving end of the motor (5), a first connecting rod (502) with one end rotatably connected to the upper part of the first rotating arm (5) and the other end rotatably connected to the upper part of a second rotating arm (503). The lower part of the second rotating arm (503) is connected to a first lever (504). The first lever (504) partially extends into the gas input chamber (404) for connecting to the gas port stopper (5041). The middle part of the second rotating arm (503) is rotatably connected to one end of a second connecting rod (505). The other end of the second connecting rod (505) is connected to a second lever (506). The second lever (506) partially extends into the air input pipe (2) for connecting to the air baffle (507).

[0015] Further, the mixing cylinder (1) includes an outer housing. A combustion plate (104) is provided at the end of the housing. A gas pipe (102) connecting the gas input chamber (404) is provided inside the housing. One end of the gas pipe (102) is connected to the combustion plate (104). A plurality of distribution pipes (103) are provided on the periphery of the gas pipe (102) on one side of the combustion plate (104). A plurality of air holes are provided on the distribution pipes (103). A plurality of combustion ports are provided on the combustion plate (104). An igniter head (105) for igniting the combustion ports of the combustion plate (104) and a flame probe (106) for detecting whether there is a flame at the combustion ports are further provided on the gas pipe (102).

[0016] Further, an installation plate (601) is connected to the outside of the mixing cylinder (1). The motor (5) and the controller (6) are both installed on the installation plate (601).

[0017] By means of the above solution, the utility model has at least the following advantages:

[0018] (1) By providing solenoid valves and gas pressure sensors at the front and rear ends of the gas input solenoid valve mechanism, the pressures at the front and rear ends of the gas input solenoid valve mechanism are detected by two gas pressure sensors, and the pressure data is sent to the controller. The controller determines whether there is a leak based on the received data, and can close the input port and send a signal to an external device after the leak, improving the safety during use;

[0019] (2) By means of the motor and the connecting rod mechanism, the flow rates of the air and gas inputs can be controlled simultaneously, and thus the combustion intensity can be adjusted;

[0020] (3) The controller of the device is also connected to an external detection pipe. A gas sensor is provided on the external detection pipe. The gas sensor is used to detect the external gas concentration, enabling the controller to know whether there is gas accumulation outside, further improving safety.

[0021] The above description is only an overview of the technical solution of the utility model. In order to be able to understand the technical means of the utility model more clearly and implement it according to the content of the description, the following takes the preferred embodiments of the utility model and combines with the drawings to describe in detail as follows. Description of the Drawings

[0022] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0023] Figure 1 is the structural schematic diagram of the present utility model Figure 1 ;

[0024] Figure 2 is the structural schematic diagram of the present utility model Figure 2 ;

[0025] Figure 3 is the schematic diagram of the present utility model after removing part of the structure;

[0026] Figure 4 is the schematic diagram of the partial structure of the mixing cylinder of the present utility model;

[0027] Figure 5 is the structural schematic diagram of the present utility model Figure 3 ;

[0028] In the figure:

[0029] 1 - mixing cylinder; 101 - mounting sleeve plate; 102 - gas pipe; 103 - distribution pipe; 104 - combustion plate; 105 - ignition head; 106 - flame probe; 107 - temperature sensor;

[0030] 2 - air input pipe;

[0031] 3 - fan;

[0032] 4 - gas input solenoid valve mechanism; 401 - gas delivery pipe; 402 - signal wire; 403 - external detection pipe; 404 - gas input chamber;

[0033] 5 - motor; 501 - first rotating arm; 502 - first connecting rod; 503 - second rotating arm; 504 - first lever; 5041 - gas port block; 505 - second connecting rod; 506 - second lever; 507 - air baffle;

[0034] 6 - controller; 601 - mounting plate; Detailed implementation manners

[0035] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0036] See Figures 1-5, a burner with a natural gas leakage detection function according to a preferred embodiment of the present utility model, includes a mixing cylinder 1, an air inlet pipe 2, a blower 3, a gas inlet solenoid valve mechanism 4, a motor 5 and a controller 6. The blower 3 inputs air into the mixing cylinder 1 through the air inlet pipe 22, and the gas inlet solenoid valve mechanism 4 is used to input gas into the mixing cylinder 1. The air and gas are mixed in the mixing cylinder 1 and then ignited and burned.

[0037] The mixing cylinder 1 includes a cylindrical outer shell. A combustion plate 104 is provided at the end of the shell. A gas pipe 102 connecting to the gas inlet chamber 404 is arranged inside the shell. One end of the gas pipe 102 is connected to the combustion plate 104. A plurality of distribution pipes 103 are arranged on the periphery of the gas pipe 102 on one side of the combustion plate 104. A plurality of air holes are provided on the distribution pipes 103, and a plurality of combustion ports are provided on the combustion plate 104. An ignition head 105 for igniting the combustion ports of the combustion plate 104 and a flame probe 106 for detecting whether there is a flame at the combustion ports are also arranged on the gas pipe 102. In the mixing cylinder 1, the gas enters the gas pipe 102, the air enters between the inside of the outer shell and the outside of the gas pipe 102. After the gas comes out from the distribution pipes 103, it mixes with the air and then goes out from the combustion plate 104 for combustion.

[0038] An installation plate 601 is connected to the outside of the mixing cylinder 1. The motor 5 and the controller 6 are both installed on the installation plate 601. Specifically, the installation plate 601 is connected to the outer wall at the bottom of the mixing cylinder 1. An installation sleeve plate 101 is also connected to the cylindrical outer wall of the mixing cylinder 1. The whole device can be fixedly installed through the installation sleeve plate 101.

[0039] The gas inlet solenoid valve mechanism 4 is located on one side of the blower 3. Solenoid valves are provided at both the input port and the output port of the gas inlet solenoid valve mechanism 4. The solenoid valves are used to control the opening or closing of the input port and the output port. Gas pressure sensors are provided at both the input port and the output port. The controller 6 is used to receive the gas pressure signals sent by the gas pressure sensors and judge whether the gas leaks according to the pressure signal difference. The specific pressure difference can be set. This difference can be set to zero, or it can be set to the range of the front and rear pressure signal differences. The specific range can be 0-10%. For example, the signal value detected by the gas pressure sensor at the input port is A, and the signal value detected by the gas pressure sensor at the output port is 0.9-1A. Within this range is the normal difference. If it exceeds this range, the controller 6 judges leakage. After the controller 6 judges that the gas leaks, it also controls the solenoid valve to close the input port, or controls the solenoid valve to close the output port, or controls the solenoid valve to close both the input port and the output port at the same time.

[0040] After the controller 6 judges that the gas leaks, it also sends an alarm signal to an external device. The external device can be a device with sound and light alarm.

[0041] A temperature sensor 107 is also provided on the outer wall at the bottom of the mixing cylinder 1. The temperature sensor 107 is used to monitor the temperature outside the mixing cylinder 1. The temperature sensor 107 is connected to the controller 6 and transmits the temperature signal to the controller 6. When the temperature detected by the temperature sensor 107 exceeds the threshold, the controller 6 closes at least one of the input port and the output port of the solenoid valve mechanism 4. At the same time, the controller 6 sends an alarm signal to an external device.

[0042] The controller 6 is usually a device with communication functions. For example, the controller 6 generally has a 485 communication module. The controller 6 can also use the 485 communication module to send the acquired data to an external server.

[0043] The controller 6 is also connected to an external detection pipe 403. A gas sensor is provided on the external detection pipe 403. The gas sensor is used to detect the external gas concentration, enabling the controller to know whether there is gas accumulation outside, further improving safety.

[0044] The gas pressure sensor is specifically connected to the controller 6 through a signal line 402. The signal line 402 serves to transmit signals.

[0045] The gas input solenoid valve mechanism 4 is connected to the gas input chamber 404 through a gas delivery pipe 401. The gas input chamber 404 is connected to the mixing cylinder 1.

[0046] The motor 5 synchronously drives the rotation of the air baffle 507 inside the air input pipe 2 and the gas port block 5041 inside the gas input chamber 404 through a linkage mechanism to adjust the air flow input into the air input pipe 2 and the gas flow input into the gas delivery pipe 401.

[0047] The specific linkage mechanism includes a first rotating arm 5 connected to the driving end of the motor 5, a first connecting rod 502 with one end rotatably connected to the upper part of the first rotating arm 5 and the other end rotatably connected to the upper part of the second rotating arm 503. The lower part of the second rotating arm 503 is connected to a first lever 504. A part of the first lever 504 extends into the gas input chamber 404 for connecting to the gas port block 5041. The middle part of the second rotating arm 503 is rotatably connected to one end of a second connecting rod 505. The other end of the second connecting rod 505 is connected to a second lever 506. A part of the second lever 506 extends into the air input pipe 2 for connecting to the air baffle 507. The gas port block 5041 can change the gas flow in and out of the gas delivery pipe 401 during rotation. Similarly, the air baffle 507 can change the air flow input into the air input pipe 2, synchronously adjusting the input gas and air.

[0048] The present utility model has at least the following advantages:

[0049] (1) By arranging solenoid valves and gas pressure sensors at both the front and rear ends of the gas input solenoid valve mechanism, this device detects the pressures at both ends of the gas input solenoid valve mechanism through two gas pressure sensors, sends the pressure data to the controller, determines whether there is a leakage based on the data received by the controller, and can close the input port and send a signal to external devices after a leakage, thus improving the safety during use;

[0050] (2) This device can simultaneously control the flow rates of air and gas input through a motor and a linkage mechanism, and thus can adjust the combustion intensity;

[0051] (3) The controller of this device is also connected to an external detection tube, and a gas sensor is arranged on the external detection tube. This gas sensor is used to detect the external gas concentration, enabling the controller to know whether there is gas accumulation outside, and further improving safety.

[0052] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A burner with a natural gas leakage detection function, comprising a mixing cylinder (1), a blower (3), a gas input solenoid valve mechanism (4) and a controller (6), wherein the blower (3) is used to input air into the mixing cylinder (1), and the gas input solenoid valve mechanism (4) is used to input gas into the mixing cylinder (1), and is characterized in that: The controller (6) is configured to obtain the gas pressure signal data at both ends of the gas input solenoid valve mechanism (4) and determine whether there is a gas leak based on the signal data.

2. The burner with a natural gas leakage detection function according to claim 1, wherein: Solenoid valves are provided at both the input port and the output port of the gas input solenoid valve mechanism (4). The solenoid valves are used to control the opening or closing of the input port and the output port. Gas pressure sensors are provided at both the input port and the output port. The controller (6) is configured to receive the gas pressure signals sent by the gas pressure sensors and determine whether there is a gas leak based on the pressure signal difference.

3. The burner with a natural gas leakage detection function according to claim 2, characterized in that: After the controller (6) determines that there is a gas leak, it also controls the solenoid valve to close the input port; after the controller (6) determines that there is a gas leak, it also sends an alarm signal to an external device.

4. A burner with a natural gas leakage detection function according to claim 1, characterized in that: A temperature sensor (107) is further connected to the outside of the mixing cylinder (1). The temperature sensor (107) is used to monitor the ambient temperature outside the burner. The controller (6) is connected to the temperature sensor (107). The controller (6) uses the temperature information obtained by the temperature sensor (107) to determine whether to close the gas input solenoid valve mechanism (4).

5. The burner with natural gas leakage detection function according to claim 2, characterized in that: The gas pressure sensor is connected to the controller (6) through a signal line (402).

6. The burner with natural gas leakage detection function according to claim 1, characterized in that: The blower (3) is connected to the mixing cylinder (1) through an air input pipe (2); The gas input solenoid valve mechanism (4) is connected to a gas input chamber (404) through a gas delivery pipe (401), and the gas input chamber (404) is connected to the mixing cylinder (1).

7. The burner with a natural gas leakage detection function according to claim 6, characterized in that: It further includes a motor (5). The motor (5) synchronously drives the rotation of an air baffle (507) inside the air input pipe (2) and a gas port stopper (5041) inside the gas input chamber (404) through a linkage mechanism to adjust the air flow rate input into the air input pipe (2) and the gas flow rate input into the gas delivery pipe (401).

8. A burner with a natural gas leakage detection function according to claim 7, characterized in that: The linkage mechanism includes a first rotating arm (501) connected to the driving end of the motor (5), a first connecting rod (502) with one end rotatably connected to the upper part of the first rotating arm (501) and the other end rotatably connected to the upper part of a second rotating arm (503), a first lever (504) connected to the lower part of the second rotating arm (503), with a part of the first lever (504) extending into the gas input chamber (404) for connecting to the gas port stopper (5041), the middle part of the second rotating arm (503) rotatably connected to one end of a second connecting rod (505), and the other end of the second connecting rod (505) connected to a second lever (506), with a part of the second lever (506) extending into the air input pipe (2) for connecting to the air baffle (507).

9. The burner with a natural gas leakage detection function according to claim 6, characterized in that: The mixing cylinder (1) includes an outer housing. A combustion plate (104) is provided at the end of the housing. A gas pipe (102) connecting the gas input chamber (404) is provided inside the housing. One end of the gas pipe (102) is connected to the combustion plate (104). A plurality of distribution pipes (103) are provided on the periphery of the gas pipe (102) on one side of the combustion plate (104). A plurality of air outlet holes are provided on the distribution pipes (103). A plurality of combustion ports are provided on the combustion plate (104). An igniter head (105) for igniting the combustion ports of the combustion plate (104) and a flame probe (106) for detecting whether there is a flame at the combustion ports are further provided on the gas pipe (102).

10. A burner with a natural gas leakage detection function according to claim 7, characterized in that: An installation plate (601) is connected to the outside of the mixing cylinder (1). The motor (5) and the controller (6) are both installed on the installation plate (601).

Images