Ignition device of roasting furnace

Abstract

The utility model belongs to the technical field of carbon product production equipment, and particularly discloses a roasting furnace ignition device which comprises a supporting device arranged above a roasting furnace, and the supporting device comprises a cross beam and supports arranged at the bottoms of the two ends of the cross beam. A natural gas main pipeline is axially arranged on the cross beam, and any end of the natural gas main pipeline is connected with a natural gas inlet pipe; the roasting furnace comprises a plurality of hearths, each hearth corresponds to one ignition opening, the natural gas main pipeline is connected with a plurality of burners matched with the ignition openings in the roasting furnace, each burner is communicated with the natural gas main pipeline through a metal hose, and a control device is further arranged on the outer surface of the natural gas main pipeline; the burner is further provided with an igniter, the igniter is connected with the control device, and the igniter is a bipolar igniter. The automatic ignition device is simple in structure, easy to implement, higher in ignition sensitivity, high in success rate, capable of reducing operation errors while saving labor cost, capable of greatly improving working efficiency and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon product production equipment, in particular to an ignition device for a roasting furnace. Background Art

[0002] Carbon materials are a type of non-metallic materials with the characteristics of high strength, high hardness, high thermal conductivity and low electrical conductivity. The carbon products made after processing are widely used in electronics, chemical industry, aerospace and metallurgy. In the preparation process, carbon products usually need to be roasted in a roasting furnace to improve their performance. The high-temperature heating treatment in the roasting furnace can significantly improve the mechanical strength, electrical conductivity and high temperature resistance of the product. The ignition device in the roasting furnace is a key component to ensure the smooth start of the roasting process. The traditional roasting furnace ignition device mainly uses a single-pole igniter for ignition, which is not sensitive enough, the ignition process is unstable, and it is not easy to operate as a whole, and it is prone to operational errors. Utility Model Content

[0003] The utility model aims to provide a roasting furnace ignition device, which has a simple structure, is easy to implement, has strong ignition sensitivity, and a high success rate, and can reduce operating errors while saving labor costs, greatly improving work efficiency and having strong practicality.

[0004] The technical solution adopted to achieve the purpose of this utility model is:

[0005] A roasting furnace ignition device comprises a supporting device arranged above the roasting furnace, and the supporting device comprises a crossbeam and brackets arranged at the bottom of both ends of the crossbeam; a natural gas main pipeline is axially arranged on the crossbeam, and a natural gas inlet pipe is connected to either end of the natural gas main pipeline; the roasting furnace comprises a plurality of furnaces, and each furnace corresponds to an ignition port, and the natural gas main pipeline is connected to a plurality of burners matching the ignition ports on the roasting furnace, each burner is connected to the natural gas main pipeline through a metal hose, and a control device is also arranged on the outer surface of the natural gas main pipeline; an igniter is also arranged on the burner, and the igniter is connected to the control device, and the igniter is a bipolar igniter.

[0006] Furthermore, a differential pressure valve is provided between the metal hose and the natural gas main pipeline, a natural gas control valve is provided between the natural gas inlet pipe and the natural gas main pipeline, and both the natural gas control valve and the differential pressure valve are connected to the control device.

[0007] Furthermore, it also includes a plurality of pressure sensing devices and temperature sensing devices matched with the furnace of the roasting furnace, and the pressure sensing devices and the temperature sensing devices are both connected to the control device.

[0008] Furthermore, it also includes a cable tray, and both ends of the cable tray are fixedly connected to the bracket respectively, the pressure sensor device and the temperature sensor device are connected to the cable tray through the pressure transmission line and the temperature transmission line respectively, and the cable tray is provided with a thermocouple plug matching the pressure transmission line and the temperature transmission line; the cable tray is provided with a cable inside, and the internal cable is connected to the control device.

[0009] Furthermore, a tray for placing the burner is provided below the crossbeam of the supporting device.

[0010] Furthermore, the brackets at both ends of the beam are triangular structures.

[0011] Furthermore, a pressure detection device is provided on the natural gas main pipeline, and the pressure detection device is connected to the control device.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model has a simple structure and is easy to implement. It adopts a bipolar igniter with strong sensitivity, which not only has a high ignition success rate, but also can fully ignite the fuel and reduce fuel waste.

[0014] 2. The control device of the utility model controls the working state of the actuator according to the data of each detection mechanism, which can reduce manual participation, save labor costs and reduce operating errors, greatly improve work efficiency and have strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model from another perspective.

[0018] In the figure: 1. Support device; 2. Natural gas main pipeline; 3. Natural gas inlet pipe; 4. Roasting furnace; 5. Furnace; 6. Ignition port; 7. Burner; 8. Metal hose; 9. Control device; 10. Ignition; 11. Differential pressure valve; 12. Natural gas control valve; 13. Cable tray; 14. Pressure transmission line; 15. Temperature transmission line; 16. Thermocouple plug; 17. Tray; 18. Pressure detection device; 19 Limit device; 20. Mechanical pressure gauge; 21. Human-computer interaction screen;

[0019] 101. Beam; 102. Bracket. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0021] like Figure 1 and Figure 2 As shown, a roasting furnace ignition device includes a supporting device 1 arranged above the roasting furnace 4, and the supporting device 1 includes a crossbeam 101 and brackets 102 arranged at the bottom of both ends of the crossbeam 101; a natural gas main pipeline 2 is axially arranged on the crossbeam 101, and a natural gas inlet pipe 3 is connected to either end of the natural gas main pipeline 2; the roasting furnace 4 includes a plurality of furnaces 5, and each furnace 5 corresponds to an ignition port 6, and the natural gas main pipeline 2 is connected to a plurality of burners 7 matching the ignition ports 6 on the roasting furnace 4, each burner 7 is connected to the natural gas main pipeline 2 through a metal hose 8, and a control device 9 is also provided on the outer surface of the natural gas main pipeline 2; an igniter 10 is also provided on the burner 7, the igniter 10 is connected to the control device 9, and the igniter 10 is a bipolar igniter 10.

[0022] The ignition device of the utility model is applied to the existing carbon product roasting furnace 4 to ignite the roasting furnace 4. In the actual working process, each roasting system includes a plurality of roasting furnaces 4 arranged in parallel to meet the roasting requirements of products at different stages. A set of ignition devices is arranged above each roasting furnace 4, and each roasting furnace 4 is ignited as needed during actual processing.

[0023] The roasting system uses multiple roasting furnaces 4 arranged in parallel for independent combustion to avoid heat being absorbed section by section during the heating process, and to avoid heat instability affecting the quality of the processed roasted products. However, since the residual heat generated during the heating process of the front furnace body during the roasting process affects the processing process of the subsequent furnace body, in the actual processing process, the temperature and other processing requirements of the roasted products in each furnace body are different. In addition, if a furnace body fails or needs maintenance, the other furnace bodies can still continue to work, which can reduce the impact on the overall production. Therefore, in actual use, the utility model divides the entire roasting system into multiple roasting furnaces 4 for roasting, which can improve the reliability and stability of the system.

[0024] In the utility model, each roasting furnace 4 includes a plurality of furnaces 5, and each furnace 5 corresponds to an ignition port 6. With the above structure, each roasting furnace 4 can be divided into a plurality of ignition sections. During ignition, ignition can be performed simultaneously in a plurality of ignition sections, thereby improving the ignition efficiency.

[0025] The support device 1 of the utility model mainly plays a bearing role. The crossbeam 101 of the support device 1 is mainly used to fix and bear the natural gas main pipeline 2, and the bracket 102 is used to support the crossbeam 101 above the roasting furnace 4. The natural gas main pipeline 2 is mainly used to transport natural gas to each burner 7, and the igniter 10 is mainly used for ignition. When the natural gas is transported to the burner 7 and the igniter 10 is ignited, the roasting furnace 4 can be ignited. In actual work, it is necessary to put a number of burners 7 into the corresponding ignition ports 6, and then the hot air is transported to the burner 7 through the metal hose 8. At the same time, the control device 9 controls the igniter 10 to ignite.

[0026] The igniter 10 in the utility model is a bipolar igniter 10 commonly seen in the prior art, such as the bipolar ignition needle device disclosed in the patent with publication number CN219300802U. The bipolar igniter 10 is more sensitive. Even if one of the electrodes fails, ignition can be achieved through the other electrode. Not only is the ignition success rate high, but the fuel can also be fully ignited, reducing fuel waste.

[0027] The opening state of the igniter 10 of the utility model is mainly realized by the control device 9, and an ignition transformer is arranged between the control device 9 and the igniter 10. When ignition is required, the control device 9 sends an ignition signal to the ignition transformer, and the ignition transformer increases the normal voltage to a sufficiently high voltage to ignite the natural gas. The above ignition principle is a common principle in the prior art and will not be repeated here.

[0028] In the utility model, a differential pressure valve 11 is provided between the metal hose 8 and the natural gas main pipeline 2, a natural gas control valve 12 is provided between the natural gas inlet pipe 3 and the natural gas main pipeline 2, and both the natural gas control valve 12 and the differential pressure valve 11 are connected to the control device 9.

[0029] The natural gas control valve 12 is mainly used to control the flow of natural gas, that is, to control the flow and pressure of natural gas entering the natural gas main pipeline 2 by adjusting the valve opening. The differential pressure valve 11 is a flow regulating valve, which mainly controls the flow of natural gas entering the metal hose 8 by adjusting the valve opening, thereby maintaining the pressure difference between each metal hose 8 stable. Specifically, when the ventilation resistance of a metal hose 8 on the ignition device increases, the differential pressure valve 11 will automatically adjust the pipeline flow of other metal hoses 8. The natural gas control valve 12 and the differential pressure valve 11 are both connected to the control device 9 to facilitate the control of the status of the natural gas control valve 12 and the differential pressure valve 11.

[0030] In the present invention, there are also a plurality of pressure sensing devices and temperature sensing devices (not shown in the figure) matched with the furnace 5 of the roasting furnace 4, and the pressure sensing devices and the temperature sensing devices are connected to the control device 9. The pressure sensing device and the temperature sensing device are used to detect the pressure and temperature in the furnace 5, and transmit them to the control device 9 to monitor the combustion state of the roasting furnace 4 in real time.

[0031] In the present invention, a cable tray 13 is also included, and both ends of the cable tray 13 are fixedly connected to the bracket 102, the pressure sensor and the temperature sensor are connected to the cable tray 13 through the pressure transmission line 14 and the temperature transmission line 15, respectively, and a thermocouple plug 16 matching the pressure transmission line 14 and the temperature transmission line 15 is provided on the cable tray 13; the cable tray 13 is provided with cables inside, and the internal cables are connected to the control device 9. The cable tray 13 is mainly used to concentrate cables and centrally set thermocouple plugs 16 to prevent the messy lines from affecting the work.

[0032] In the utility model, a tray 17 for placing the burner 7 is also provided below the crossbeam 101 of the support device 1. The tray 17 of the utility model is mainly used to place the burner 7, and a placement hole is provided on the tray 17. When ignition is not required, the burner 7 can be inserted into the placement hole. In order to facilitate better placement of the burner 7, the utility model also provides a limiting device 19 on the upper part of the burner 7. After the burner 7 is inserted into the placement hole, the limiting device 19 is stuck above the placement hole to achieve the limiting. In one embodiment of the utility model, the limiting device 19 is a limiting ring, and the outer diameter of the limiting ring is larger than the diameter of the placement hole; at the same time, the outer diameter of the limiting ring is smaller than the aperture of the ignition port 6, so that the ignition nozzle can be smoothly placed in the ignition port 6 for ignition during ignition. In addition, the diameter of the placement hole is larger than the diameter of the burner 7 to ensure that the burner 7 can pass through the placement hole.

[0033] In the present invention, the brackets 102 at both ends of the crossbeam 101 are triangular structures. The triangular structure is composed of three support bars forming an isosceles triangle. Setting the brackets 102 as a triangular structure can ensure that the support device 1 as a whole has stronger stability and support strength.

[0034] In the utility model, a pressure detection device 18 is further provided on the natural gas main pipeline 2 , and the pressure detection device 18 is connected to the control device 9 .

[0035] The pressure detection device 18 is a common device in the prior art, which is mainly used to detect the pressure inside the natural gas main pipeline 2. It is a digital pressure gauge, and the staff can directly display and check the pressure value. It is connected to the control device 9 and the pressure value can be further transmitted to the control device 9. In one embodiment of the utility model, in order to improve the detection accuracy, a pressure detection mechanical pressure gauge 20 is also provided on the natural gas main pipeline 2. It is a dial structure, and the pressure inside the natural gas main pipeline 2 can be read by a pointer. Whether it is a digital pressure gauge or a mechanical pressure gauge 20, its detection probe is set inside the natural gas main pipeline 2, and the display part is set outside the natural gas main pipeline 2.

[0036] In the present utility model, the control device 9 includes components such as an electric control box, a human-machine interaction screen 21, and an internal PLC controller. The igniter 10, the natural gas control valve 12, the differential pressure valve 11, the pressure sensor, the temperature sensor, and the pressure detection device 18 are all connected to the PLC controller in the control device 9. The PLC controller sends corresponding instructions to the actuator (such as the igniter 10, the natural gas control valve 12, and the differential pressure valve 11) after analyzing the data fed back by each detection mechanism (such as the pressure sensor, the temperature sensor, and the pressure detection device 18), thereby realizing the automatic control of the system. The above processes are all routinely implemented by those skilled in the art on the basis of knowing the technical solution of the utility model. In actual use, the staff can set the corresponding ignition temperature and the flameout temperature range through the human-machine interaction screen 21 (the specific ignition temperature and the flameout temperature are adjusted according to actual needs, which is not limited here). After starting work, if the detection mechanism detects that the temperature is lower than the set temperature, ignition begins. In this way, it is only necessary to set the ignition temperature and the flameout temperature range, and no manual ignition is required, which greatly improves work efficiency.

[0037] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions and improvements made within the scope of the utility model should be included in the protection scope of the utility model.

Claims

1. A roasting furnace ignition device, characterized in that: The invention comprises a support device (1) arranged above a roasting furnace (4), and the support device (1) comprises a crossbeam (101) and brackets (102) arranged at the bottom of both ends of the crossbeam (101); a natural gas main pipeline (2) is axially arranged on the crossbeam (101), and a natural gas inlet pipe (3) is connected to any one end of the natural gas main pipeline (2); the roasting furnace (4) comprises a plurality of furnaces (5), and each furnace (5) corresponds to an ignition port (6); a plurality of burners (7) matching the ignition ports (6) on the roasting furnace (4) are connected to the natural gas main pipeline (2), each burner (7) is connected to the natural gas main pipeline (2) through a metal hose (8), and a control device (9) is also arranged on the outer surface of the natural gas main pipeline (2); an igniter (10) is also arranged on the burner (7), and the igniter (10) is connected to the control device (9), and the igniter (10) is a bipolar igniter (10).

2. The roasting furnace ignition device according to claim 1, characterized in that: A differential pressure valve (12) is provided between the metal hose (8) and the natural gas main pipeline (2), a natural gas control valve (11) is provided between the natural gas inlet pipe (3) and the natural gas main pipeline (2), and both the natural gas control valve (11) and the differential pressure valve (12) are connected to the control device (9).

3. The roasting furnace ignition device according to claim 1 or 2, characterized in that: It also includes a plurality of pressure sensing devices and temperature sensing devices matched with the furnace (5) of the roasting furnace (4), and both the pressure sensing devices and the temperature sensing devices are connected to the control device (9).

4. The roasting furnace ignition device according to claim 3, characterized in that: The invention also comprises a cable tray (13), wherein both ends of the cable tray (13) are respectively fixedly connected to the bracket (102); a pressure sensing device and a temperature sensing device are respectively connected to the cable tray (13) via a pressure transmission line (14) and a temperature transmission line (15); and a thermocouple plug (16) matching the pressure transmission line (14) and the temperature transmission line (15) is provided on the cable tray (13); and a cable is provided inside the cable tray (13), and the internal cable is connected to the control device (9).

5. The roasting furnace ignition device according to claim 1, 2 or 4, characterized in that: A tray (17) for placing the burner (7) is also provided below the crossbeam (101) of the supporting device (1).

6. The ignition device for a roasting furnace according to claim 3, characterized in that: A tray (17) for placing the burner (7) is also provided below the crossbeam (101) of the supporting device (1).

7. The roasting furnace ignition device according to claim 1, 2, 4 or 6, characterized in that: The brackets (102) at both ends of the crossbeam (101) are triangular structures.

8. The roasting furnace ignition device according to claim 1, 2, 4 or 6, characterized in that: A pressure detection device (18) is also provided on the natural gas main pipeline (2), and the pressure detection device (18) is connected to the control device (9).

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