Flue gas furnace flame detection protection device

Abstract

The utility model relates to the technical field of flame detection of iron-making equipment, in particular to a flame detection protection device for a flue gas furnace, which comprises a flue gas furnace body, an observation hole arranged on one side of the flue gas furnace body and a support arranged on one side of the flue gas furnace body. The probe protection device is arranged at one end of the support, a flame detection probe is arranged on one side of the probe protection device, and the electrical input end of the flame detection probe is electrically connected with a signal line; after the flame detection probe protection device is additionally designed and manufactured in front of the flame detection probe of the flue gas furnace, the branch pipe at the front end of the flame detection probe is always in a positive pressure state, and dust in air is prevented from falling to the probe, so that the probe can accurately detect whether flames in the flue gas furnace are extinguished or not; meanwhile, the combustion condition in the flue gas furnace is accurately detected, the flame detection system feeds back signals to the control system, the gas stop valve is closed in time through interlocking control, and gas is prevented from leaking outwards from the flue gas furnace.

Description

TECHNICAL FIELD

[0001] The utility model relates to ironmaking equipment flame detection technical field, concretely is a flue gas furnace flame detection protection device. BACKGROUND

[0002] The blast furnace ironmaking is the main modern ironmaking method with mature technology and relatively simple production process, large output, high labor productivity and low energy consumption, wherein the coal injection system is an important component of the blast furnace production, the blast furnace coal injection is one of the most common methods for reducing the smelting cost of the blast furnace and is also one of the indispensable important means for adjusting the furnace condition, and improving the coal ratio and reducing the coke ratio is one of the important means for reducing the energy consumption and cost of the blast furnace smelting.

[0003] The coal injection system is composed of a pulverizing system and a spraying system, and the pulverizing system of the coal injection flue gas furnace is one of the key equipment, in order to ensure the safe operation of the flue gas furnace, the flue gas furnace hearth pressure is -500~ -20Pa, the flue gas furnace inlet gas pressure is 3~12KPa, the combustion-supporting fan blows air for combustion-supporting, the gas is mixed with air for combustion, when the flue gas furnace hearth pressure reaches the positive pressure, the flue gas furnace flame is sprayed out from the flame detection hole, thereby burning the flame detection probe, on the one hand, the flame detection equipment procurement cost is increased, on the other hand, once the flame is extinguished during the combustion of the flue gas furnace, the flame detection probe is burned and not found in time, the computer operation end cannot detect the flame extinguishing signal in the flue gas furnace, leading to the gas leakage and causing the gas poisoning accident of the surrounding workers. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a flue gas furnace flame detection protection device to solve the problems in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a flue gas furnace flame detection protection device, comprising a flue gas furnace body, further comprising:

[0006] An observation hole arranged on one side of the flue gas furnace body, a support on one side of the flue gas furnace body;

[0007] A probe protection device arranged on one end of the support, a flame detection probe arranged on one side of the probe protection device, an electrical input end of the flame detection probe electrically connected with a signal line, a ball valve arranged on one end of the support, and a gas source pipe communicated with an air outlet end of the ball valve.

[0008] Preferably, a clamping ring is slidably connected to the outer side of the support, and three groups of fixing bolts are arranged on the inner wall of the clamping ring.

[0009] Preferably, two groups of mounting seats are fixed to the outer side of the clamping ring, and a first clamping block is fixed to the top of each of the two groups of mounting seats.

[0010] Preferably, the inner wall of the first clamping block is rotationally connected with a second clamping block, the inner wall of the second clamping block is threadedly connected with a lead screw, and the outer side of the lead screw is rotationally connected with the inner wall of the first clamping block.

[0011] Preferably, the outer side of the smoke furnace body is provided with two vertically arranged support plates, and one side of each of the two support plates is fixedly provided with a support leg.

[0012] Preferably, one side of the support plate is fixedly provided with a support frame, and one side of the support plate is fixedly provided with a transversely arranged connecting rod.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The utility model discloses a smoke furnace flame detection protection device, which comprises a smoke furnace body, a smoke furnace flame detection probe, a signal line, a ball valve and a gas source pipe. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A preferred embodiment structure diagram of the smoke furnace flame detection protection device is provided.

[0016] Figure 2 A smoke furnace body structure diagram is provided.

[0017] Figure 3 A support structure diagram is provided.

[0018] Figure 4 A clamping ring structure diagram is provided.

[0019] In the figure: 1, smoke furnace body; 2, observation hole; 3, support; 4, probe protection device; 5, flame detection probe; 6, signal line; 7, ball valve; 8, gas source pipe; 9, clamping ring; 10, fixed bolt; 11, mounting seat; 12, first clamping block; 13, second clamping block; 14, lead screw; 15, turntable handle; 16, support plate; 17, support leg; 18, support frame; 19, connecting rod. DETAILED DESCRIPTION

[0020] In order to further illustrate the technical means and effects taken by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0021] Please refer to Figures 1-4 As shown in the figure, a flue gas stove flame detection protection device, including the flue gas stove body 1, the flue gas stove body 1 side is provided with observation hole 2, by setting up observation hole 2, can be convenient for the flue gas stove body 1 inside the gas combustion observation, the support 3 of flue gas stove body 1 side, by setting up support 3, can be convenient for the probe protection device 4 is supported, and it is convenient for the ball valve 7 is supported;Probe protection device 4 is set in the support 3 one end, by setting up probe protection device 4, can be convenient for the flame detection probe 5 is protected, the one side of probe protection device 4 is provided with flame detection probe 5, by setting up flame detection probe 5, can be convenient for detecting the situation of combustion in the flue gas stove body 1, the electric property input end of flame detection probe 5 is electrically connected with signal line 6, by setting up signal line 6, can be convenient for the transmission of detection results, one end of support 3 is provided with ball valve 7, by setting up ball valve 7, can be convenient for controlling the pressure of the probe protection device 4, the gas outlet end of ball valve 7 is communicated with gas source pipe 8, by setting up gas source pipe 8, can be convenient for the nitrogen or compressed air of a certain pressure is imported into probe protection device 4.

[0022] The outer side of support 3 is slidably connected with clamping ring 9, by setting up clamping ring 9, can be convenient for the fixation of support 3, the inner wall of clamping ring 9 is provided with three groups of fixed bolts 10, by setting up fixed bolt 10, can be convenient for the clamping ring 9 and support 3 are clamped;The outer side of clamping ring 9 is fixed with two groups of mounting seat 11, by setting up mounting seat 11, can be convenient for the first clamping block 12 is fixed outside clamping ring 9, the top of two groups of mounting seat 11 is fixed with first clamping block 12, by setting up first clamping block 12, can be convenient for the second clamping block 13 is limited;The inner wall of first clamping block 12 is rotatably connected with second clamping block 13, by setting up second clamping block 13, can be convenient for the flame detection protection device is installed in the gas outlet end of observation hole 2, the inner wall of second clamping block 13 is threadedly connected with lead screw 14, and the outer side of lead screw 14 is rotatably connected with the inner wall of first clamping block 12, by setting up lead screw 14, can be convenient for driving second clamping block 13 moves, one end of lead screw 14 is fixed with rotary knob 15, by setting up rotary knob 15, can be convenient for driving lead screw 14 rotates.

[0023] The outer side of the flue gas furnace body 1 is provided with two vertically arranged support plates 16, through the arrangement of the support plates 16, the flue gas furnace body 1 can be conveniently supported, the two support plates 16 are fixed with support legs 17 on one side, through the arrangement of the support legs 17, the support plates 16 can be conveniently supported, thereby facilitating the support of the flue gas furnace body 1; the support plate 16 is fixed with a support frame 18 on one side, through the arrangement of the support frame 18, the support plate 16 can be conveniently supported, the support plate 16 is fixed with a transversely arranged connecting rod 19 on one side, through the arrangement of the connecting rod 19, the two support plates 16 can be conveniently connected, and the stability of the main body is improved.

[0024] Working principle: in use, first, the main body is installed at the gas outlet end of the observation hole 2 through the cooperation of the mounting seat 11, the first clamping block 12, the second clamping block 13, the screw rod 14 and the rotary disc handle 15, then the flame detection probe 5 is installed at one end of the straight pipe section of the probe protection device 4, the flame detection probe 5 detects the combustion condition in the flue gas furnace body 1 through the straight pipe, the probe protection device 4 is connected with a certain pressure nitrogen or compressed air, so that the pressure in the probe protection device 4 is greater than 50KPa, and at the same time, a ball valve 7 is installed at the head of the probe protection device 4, the pressure entering the probe protection device 4 is controlled through the ball valve 7, so that the flame ejected from the flue gas furnace body 1 cannot burn the flame detection probe 5, when the flame in the flue gas furnace body 1 is extinguished, the flame detection probe 5 detects the flameout and sends a signal to the PLC system, the flameout signal is interlocked with the gas cut-off valve, and the gas cut-off valve is closed in time when the flame is extinguished, so as to prevent the leakage of coal gas from the flue gas furnace body 1 to the outside and cause personnel coal gas poisoning.

[0025] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change and modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the technical solution of the present application.

Claims

1. A fume fire flame detection protection device for a fume fire, comprising a fume fire body (1), characterized in that, Also include: The observation hole (2) is arranged in one side of the flue gas furnace body (1), the support (3) of one side of the flue gas furnace body (1); Probe protection device (4) is arranged in one end of support (3), one side of probe protection device (4) is provided with flame detection probe (5), electrically connected with signal line (6) in electric input end of flame detection probe (5), one end of support (3) is provided with ball valve (7), the outlet end of ball valve (7) is communicated with gas source pipe (8).

2. A flue gas fire flame detection protection device according to claim 1, characterised in that: The outer side of the support (3) is slidably connected with the clamping ring (9), and the inner wall of the clamping ring (9) is provided with three groups of fixing bolts (10).

3. A flue gas fire flame detection protection device according to claim 2, characterised in that: The outer side of the clamping ring (9) is fixed with two groups of mounting seats (11), and the top of the two groups of mounting seats (11) is fixed with the first clamping block (12).

4. A flue gas fire flame detection protection device according to claim 3, characterised in that: The inner wall of the first clamping block (12) is rotatably connected with the second clamping block (13), the inner wall of the second clamping block (13) is threadedly connected with the lead screw (14), and the outer side of the lead screw (14) is rotatably connected with the inner wall of the first clamping block (12), one end of the lead screw (14) is fixed with the rotary knob (15).

5. A flue gas fire flame detection protection device as claimed in claim 1, wherein: The outer side of the flue gas furnace body (1) is provided with two vertical support plates (16), and one side of the two support plates (16) is fixed with the support leg (17).

6. A flue gas fire flame detection protection apparatus as claimed in claim 5, wherein: One side of the support plate (16) is fixed with the support frame (18), and one side of the support plate (16) is fixed with the transversely arranged connecting rod (19).

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