CN214332743U

CN214332743U - Automatic ignition device for raw coke oven gas diffusion

Info

Publication number: CN214332743U
Application number: CN202022122914.9U
Authority: CN
Inventors: 张瑞民; 王新力; 王金东; 范文祥; 贾旭鉴
Original assignee: Xuanhua Iron and Steel Group Co Ltd
Current assignee: Xuanhua Iron and Steel Group Co Ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-10-01
Anticipated expiration: 2030-09-24

Abstract

The utility model discloses a coke oven crude gas diffuses automatic ignition, it includes manometer, some firearm, flame monitor, auxiliary relay and contactor, the manometer is installed on coke oven crude gas diffuses the pipe, and the normally open contact of manometer and auxiliary relay's control coil series connection back power supply voltage, auxiliary relay's normally open contact, flame monitor's normally open contact and the control coil three series connection back power supply voltage of contactor, some firearm are connected with the power through the normally open contact of contactor, some firearm and flame monitor are all installed in the gas vent top of diffusing the pipe. The utility model discloses utilize manometer and flame monitor real-time supervision raw coke oven gas pressure and raw coke oven gas flame, switch on some firearm power immediately when raw coke oven gas pressure is higher than the setting value and do not have flame, light the raw coke oven gas that will diffuse. The device realizes the automation of ignition, can prevent partial crude gas leakage after flame extinguishes, and avoids polluting the atmosphere.

Description

Automatic ignition device for raw coke oven gas diffusion

Technical Field

The utility model relates to a device capable of automatically igniting raw coke oven gas diffused by a coke oven, belonging to the technical field of coking equipment.

Background

Coke oven gas belongs to high heating value gas and is a byproduct of the coking industry. When relevant equipment fails, coke oven gas cannot be pumped away in time or the generation amount is increased suddenly, a large amount of raw coke gas is diffused, and the raw coke gas needs to be ignited by using an ignition device so as to avoid air pollution. The existing raw gas ignition device generally ignites clean gas by virtue of sparks generated when a high-voltage electrode is ignited, and then the raw gas is ignited by the burning clean gas. Because the pressure of the raw gas changes at any time, the raw gas is inevitably extinguished after being ignited, and the next ignition cannot be carried out in time after the flame is extinguished, so that part of the raw gas is leaked, and further the atmosphere is polluted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coke oven crude gas diffuses automatic ignition to the drawback of prior art to in time ignite the crude gas who diffuses, avoid causing environmental pollution.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the automatic ignition device for the raw coke oven gas diffusion comprises a pressure gauge, an igniter, a flame monitor, an intermediate relay and a contactor, wherein the pressure gauge is installed on a raw coke oven gas diffusion pipe, a normally open contact of the pressure gauge is connected with a control coil of the intermediate relay in series and then connected with a power supply voltage, a normally open contact of the intermediate relay, a normally closed contact of the flame monitor and a control coil of the contactor are connected with the power supply voltage in series, the igniter is connected with a power supply through the normally open contact of the contactor, and the igniter and the flame monitor are both installed above an exhaust port of the diffusion pipe.

The automatic ignition device for the raw coke oven gas diffusion comprises a steam nozzle and a steam valve, wherein the steam nozzle is arranged on the side part of an exhaust port of a raw coke oven gas diffusion pipe and is connected with a steam source through the steam valve, and steam flow sprayed by the steam nozzle is converged into the raw coke oven gas flow diffused by the diffusion pipe in the forward direction.

In the automatic ignition device for the raw coke oven gas diffusion, the igniter adopts a carbon rod.

According to the automatic ignition device for the raw coke oven gas diffusion, the igniter and the lead of the flame monitor are arranged in the threading pipe, the threading pipe is connected with the outer wall of the raw coke oven gas diffusion pipe through the support, and the carbon rod is fixed on the threading pipe through the jacket.

According to the automatic ignition device for the raw coke oven gas diffusion, at least two steam nozzles are arranged and are uniformly distributed around the exhaust port of the raw coke oven gas diffusion pipe.

The utility model discloses utilize manometer and flame monitor real-time supervision raw coke oven gas pressure and raw coke oven gas flame, switch on some firearm power immediately when raw coke oven gas pressure is higher than the setting value and do not have flame, light the raw coke oven gas that will diffuse. The device realizes the automation of ignition, can prevent partial crude gas leakage after flame extinguishes, and avoids polluting the atmosphere.

Drawings

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

FIG. 1 is a schematic view of the installation of the present invention;

FIG. 2 is a schematic diagram of the connection of an intermediate relay;

fig. 3 is an electrical schematic of the igniter control circuit.

The reference numbers in the figures are as follows: 1. the device comprises a steam nozzle, 2, a steam valve, 3, a blow-off pipe, 4, a blow-off valve, 5, a threading pipe, R, an igniter, F, a flame monitor, P, a pressure gauge, KA, an intermediate relay, KA-1, a normally open contact of the intermediate relay, KM, a contactor, KM-1 and a normally open contact of the contactor.

Detailed Description

The utility model overcomes prior art's is not enough, can in time ignite the raw coke oven gas that the coke oven diffuses and have advantages such as safe and reliable, reaction are quick, can effectively prevent that raw coke oven gas from causing the pollution to atmospheric environment.

The utility model discloses a through an electric contact pressure gauge, when crude gas pressure > =300Pa, signal of output makes on-the-spot relay the actuation that gets electricity, sends 220V voltage to the carbon-point at diffusing pipe top, and the carbon-point gets electricity and produces in the twinkling of an eye and last high temperature, reaches crude gas burning point (600 ℃ -650 ℃), makes the whole fast combustion of crude gas through the carbon-point.

Referring to fig. 1, 2 and 3, the utility model discloses mainly include steam nozzle 1, steam valve 2, threading pipe 5, some firearm R, flame monitor F, electric contact pressure gauge P, auxiliary relay KA and contactor KM.

The bleeding pipe 3 is connected with the coke oven gas through a bleeding valve 4. The igniter R can be a carbon rod or a high-voltage electrode ignition device and is used for igniting raw coke oven gas. The carbon rod is mounted on the diffusing pipe 3 through a jacket and a bracket. The steam nozzle 1 is connected with a steam source through a steam valve 2 and is used for cleaning and lengthening flames; when the gas pressure collected by the pressure gauge P reaches an alarm value, the normally open contact is closed to control the intermediate relay KA to suck, after the intermediate relay KA sucks, the normally open contact is closed to suck the contactor KM, the carbon rod is electrified to heat quickly, the raw gas is ignited after reaching a raw gas combustion point, the flame monitor monitors that the normally closed contact is opened after a flame signal is monitored for 5 seconds, and the carbon rod power supply is automatically cut off to avoid energy waste. The utility model has the advantages of safety, reliability, low cost, fast reaction and no need of manual operation.

The utility model discloses a preparation method:

one side of the coke oven diffusing pipe is welded with a metal bracket (50 multiplied by 5 angle steel) at intervals of 0.5M along the axial direction, and the bracket is welded with a metal bracketA seamless pipe with the root length of 5.0M is used as a threading pipe, a carbon rod bracket and a flame monitor bracket are welded between the threading pipe and the top of a diffusing pipe, a jacket is arranged on the bracket, and then a carbon rod is arranged in the jacket. Finally, a flame monitor is installed.

An electric contact pressure gauge is installed at the bottom of the diffusing pipe, and an electric device such as a power supply, an intermediate relay, a contactor and the like is installed in an electric chamber of the ascending pipe.

4. Practice proves that the device can realize automatic control of the coke oven gas diffusion, so that the automatic control degree of the coke oven is more perfect, and the safety of the diffusion is greatly improved.

The utility model discloses a theory of operation:

when the raw gas pressure > =300Pa, a switching value signal (a normally open contact of a pressure gauge is closed) is output through a field pressure gauge P, so that an intermediate relay KA in an electric control chamber is electrified, the normally open contact KA-1 of the intermediate relay is closed, then a contactor KM is electrified, the normally open contact KM-1 of the contactor is closed, a continuous high voltage is sent to an igniter R (carbon rod), the igniter R generates continuous high temperature instantly to reach a critical point of gas combustion, the raw gas is combusted, after the flame monitor F successfully ignites, the normally open contact is disconnected, a control coil of the contactor KM is monitored to lose power, and the normally open contact KM-1 of the contactor is disconnected. The ignition was successful.

The utility model is characterized in that:

(1) the system has safe and reliable operation and quick response, and not only considers the safety factors during various possible faults, but also considers the emergency measures during the faults during the design.

(2) The practicality is strong, realizes once igniting, avoids polluting the air.

(3) Convenient maintenance, low cost and simple operation.

Claims

1. The automatic ignition device for the coke oven crude gas diffusion is characterized by comprising a pressure gauge (P), an igniter (R), a flame monitor (F), an intermediate relay (KA) and a contactor (KM), wherein the pressure gauge (P) is installed on a coke oven crude gas diffusion pipe (3), a normally open contact of the pressure gauge (P) is connected with a control coil (KA-1) of the intermediate relay (KA) in series and then connected with a power supply voltage, a normally open contact of the intermediate relay (KA), a normally closed contact of the flame monitor (F) and a control coil of the contactor are connected with the control coil of the contactor in series and then connected with the power supply voltage, the igniter (R) is connected with a power supply through the normally open contact (KM-1) of the contactor, and the igniter (R) and the flame monitor (F) are installed above an exhaust port of the diffusion pipe (3).

2. The automatic ignition device for the raw coke oven gas emission of claim 1, which is characterized by further comprising a steam nozzle (1) and a steam valve (2), wherein the steam nozzle (1) is arranged on the side part of the exhaust port of the raw coke oven gas emission pipe (3) and is connected with a steam source through the steam valve (2), and steam flow sprayed from the steam nozzle (1) is converged into the raw coke oven gas flow emitted from the emission pipe (3) in the forward direction.

3. The coke oven crude gas diffusion automatic ignition device as claimed in claim 1 or 2, wherein the igniter (R) is a carbon rod.

4. The automatic ignition device for the raw coke oven gas emission of claim 3, wherein the lead wires of the igniter (R) and the flame monitor (F) are arranged in the threading pipe (5), the threading pipe (5) is connected with the outer wall of the raw coke oven gas emission pipe (3) through a support, and the carbon rod is fixed on the threading pipe (5) through a jacket.

5. The coke oven crude gas emission automatic ignition device as claimed in claim 2, wherein at least two steam nozzles (1) are provided, which are uniformly distributed around the exhaust port of the crude gas emission pipe (3).