Gas pressure stable control device of tubular furnace

Abstract

The utility model relates to a tube furnace gas pressure stable control device which comprises a pipeline and a manual gate valve, a pressure gauge and a first pressure switch are installed on the side, away from a pipeline gas inlet, of the manual gate valve, and an electric control valve is installed between the pressure gauge and the first pressure switch. A stop valve, a second pressure switch and a pressure transmitter are sequentially arranged on the side, away from the electric adjusting valve, of the first pressure switch at intervals, the pressure transmitter and the electric adjusting valve are connected through a PID valve position controller, a fuel gas adjusting valve is arranged on one side of the stop valve, and the pressure value is automatically adjusted to the set value of the PID valve position controller through the electric adjusting valve according to the downstream gas pressure value. Therefore, the gas pressure is stabilized, and the phenomenon of large temperature fluctuation of a material outlet caused by large fluctuation of the gas pressure is effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of coal gas, in particular to a pipe furnace coal gas pressure stabilization control device. Background Art

[0002] Currently, due to the wide range of gas pressure fluctuations, sudden increases or decreases in pressure during the combustion process do not immediately elicit a temperature increase or decrease, resulting in significant hysteresis. The tubular furnace's PLC control program does not respond to these sudden increases or decreases in gas pressure by adjusting the load accordingly, resulting in large fluctuations in the material outlet temperature. Furthermore, because the gas pressure is very low, only 5-12 kPa, conventional pressure stabilization devices are not ideal for micro-pressure stabilization. Frequent gas pressure fluctuations can easily cause fluctuations in the material outlet temperature, which in turn affects product quality, necessitating urgent improvements. Utility Model Content

[0003] The utility model aims to provide a tube furnace gas pressure stabilization control device, which is used to solve the problem that the existing tube furnace gas pressure stabilization control device causes large fluctuations in material outlet temperature due to unstable pressure.

[0004] In order to solve the above problems, the utility model provides a tubular furnace gas pressure stabilization control device, including a pipeline and a manual gate valve, a pressure gauge and a first pressure switch are installed on the side of the manual gate valve away from the pipeline gas inlet, an electric regulating valve is installed between the pressure gauge and the first pressure switch, a shut-off valve, a second pressure switch and a pressure transmitter are provided at intervals on the side of the first pressure switch away from the electric regulating valve, the pressure transmitter and the electric regulating valve are connected through a PID valve position controller, and a gas regulating valve is provided on one side of the shut-off valve.

[0005] The utility model provides a tubular furnace gas pressure stabilization control device which also has the following technical features:

[0006] Furthermore, a burner is provided at one end of the pipeline close to the gas regulating valve.

[0007] Furthermore, an ignition gun is provided on one side of the burner.

[0008] Furthermore, a blower is installed below the burner.

[0009] Furthermore, a damper regulating valve is installed at the blowing end of the blower.

[0010] Furthermore, one side of the pipeline is connected to an ignition bypass pipeline, and an ignition valve is installed on the ignition bypass.

[0011] The utility model has the following beneficial effects: the electric regulating valve automatically adjusts to the set value of the PID valve position controller according to the gas pressure value after the valve, so as to achieve the effect of stabilizing the gas pressure, and effectively solves the problem that the large fluctuation of gas pressure leads to large fluctuation of material outlet temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the tubular furnace gas pressure stabilization control device. DETAILED DESCRIPTION

[0013] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0014] like Figure 1 In the embodiment of a tubular furnace gas pressure stabilization control device of the utility model shown, it includes a pipeline 1 and a manual gate valve 2. A pressure gauge 4 and a first pressure switch 3 are installed on the side of the manual gate valve 2 away from the pipeline gas inlet, and an electric regulating valve 5 is installed between the pressure gauge 4 and the first pressure switch 3. A shut-off valve 6, a second pressure switch 7 and a pressure transmitter 8 are provided at intervals on the side of the first pressure switch 3 away from the electric regulating valve 5. The pressure transmitter 8 and the electric regulating valve 5 are connected through a PID valve position controller 10. A gas regulating valve 11 is provided on one side of the shut-off valve 6. Specifically, the electric regulating valve 5 automatically adjusts the gas pressure value after the valve to the set value of the PID valve position controller 10 according to the gas pressure value after the valve, so as to achieve the effect of stabilizing the gas pressure and effectively solve the problem that the large fluctuation of the gas pressure causes the large fluctuation of the material outlet temperature.

[0015] In one embodiment of the present application, a burner 12 is provided at one end of the pipeline 1 close to the gas regulating valve 11 .

[0016] In one embodiment of the present application, an ignition gun 13 is provided on one side of the burner 12 .

[0017] In one embodiment of the present application, a blower 14 is installed below the burner 12 .

[0018] In one embodiment of the present application, a damper regulating valve 15 is installed at the blowing end of the blower 14 .

[0019] In one embodiment of the present application, one side of the pipeline 1 is connected to an ignition bypass pipeline 101 , and an ignition valve 16 is installed on the ignition bypass.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A tube furnace gas pressure stabilization control device, characterized in that: It includes a pipeline and a manual gate valve. A pressure gauge and a first pressure switch are installed on the side of the manual gate valve away from the pipeline gas inlet. An electric regulating valve is installed between the pressure gauge and the first pressure switch. A shut-off valve, a second pressure switch and a pressure transmitter are installed at intervals on the side of the first pressure switch away from the electric regulating valve. The pressure transmitter and the electric regulating valve are connected through a PID valve position controller. A gas regulating valve is provided on one side of the shut-off valve.

2. The gas pressure stabilization control device for a tubular furnace according to claim 1, characterized in that: A burner is provided at one end of the pipeline close to the gas regulating valve.

3. The gas pressure stabilization control device for a tubular furnace according to claim 2, characterized in that: An ignition gun is provided on one side of the burner.

4. The gas pressure stabilization control device for a tubular furnace according to claim 2, characterized in that: A blower is installed below the burner.

5. The tube furnace gas pressure stabilization control device according to claim 4, characterized in that: The air blowing end of the blower is equipped with an air damper regulating valve.

6. The device for stabilizing gas pressure in a tubular furnace according to claim 5, characterized in that: One side of the pipeline is connected to an ignition bypass pipeline, and an ignition valve is installed on the ignition bypass.

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