Hydrogen-rich carbon circulating oxygen blast furnace peephole valve cleaning device

Abstract

The utility model belongs to the technical field of a peephole of a hydrogen-rich carbon circulating furnace, and particularly discloses a valve cleaning device for a peephole of a hydrogen-rich carbon circulating oxygen blast furnace, which comprises a spray head, a purging opening is arranged on the spray head, a blocking block is nested in the purging opening, the blocking block is connected with the spray head through a bolt, a connecting component used for connecting the spray head is arranged on the spray head, and a gas pipe is fixedly connected on the spray head. Due to the fact that the four purging openings are formed in the nozzle, when coke and other substances are not evenly distributed on the inner wall of the peephole valve, the blocking block and the nozzle are connected through the bolt at the position, without the coke and other substances, of the inner wall of the valve. Therefore, the air knife sprayed by nitrogen from the nozzle only purges the inner wall of the valve with substances such as coke, so that the problem that gas in the connecting pipe cannot accurately purge the substances such as coke when the substances such as coke are not uniformly distributed on the inner wall of the peephole valve in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of peepholes for hydrogen-rich carbon circulation furnaces, in particular to a peephole valve cleaning device for a hydrogen-rich carbon circulation oxygen blast furnace. Background Art

[0002] The hydrogen-rich carbon circulating oxygen blast furnace processes the coal gas produced by the traditional blast furnace through complex processes such as pressurizing and removing carbon dioxide, and then recycles the high-reduction potential coal gas back to the blast furnace. In this process, the hydrogen and carbon monoxide in the coal gas act as reducing agents, reducing the consumption of fossil fuels and carbon emission intensity. The structure of the hydrogen-rich carbon circulating oxygen blast furnace is divided into the blast furnace body, the coal gas treatment system, the multi-media composite injection system, auxiliary facilities and the control system. The multi-media composite injection system has a peephole for observing the tuyere. During the air supply process of the tuyere, when emergency air reduction, air pull and air stop occur, the coke and other substances in the furnace will enter the inside of the blowpipe along the tuyere hole and block the peephole. The traditional cleaning method is to remove the peephole plug cap and open the peephole plug rotary valve, and use the coal gas pressure in the furnace to flush out the coke and other substances and discharge them directly into the atmosphere, which is easy to pollute the environment.

[0003] In order to solve the above problems, patent publication number: CN219793026U provides an online dust cleaning device for the air inlet peephole plug plate, including a connecting pipe, one end of the connecting pipe is connected to the compressed air pipeline, and the other end of the connecting pipe is connected to the peephole cap through a joint unit. The compressed air in the compressed air pipeline is blown into the peephole channel through the connecting pipe and the joint unit, and the accumulated dust in the peephole channel is blown into the blast furnace. The above patent has the problem that when coke and other substances are not evenly distributed on the inner wall of the peephole valve, the gas in the connecting pipe cannot accurately blow away coke and other substances. Utility Model Content

[0004] The purpose of the utility model is to provide a hydrogen-rich carbon circulating oxygen blast furnace peephole valve cleaning device to solve the problem in the prior art that when coke and other substances are not evenly distributed on the inner wall of the peephole valve, the gas in the connecting pipe cannot accurately blow away coke and other substances.

[0005] In order to achieve the above-mentioned purpose, the basic solution provided by the utility model is: a hydrogen-rich carbon circulating oxygen blast furnace peephole valve cleaning device, including a nozzle, a purge port is opened on the nozzle, a block is nested in the purge port, the block is bolted to the nozzle, a connecting assembly for connecting the nozzle is provided on the nozzle, an air pipe is fixedly connected to the nozzle, and a nitrogen tank is provided on the air pipe.

[0006] The principle and beneficial effects of the utility model are as follows: during installation, the nozzle is connected to the peephole valve through a connecting assembly; during use, the nitrogen in the nitrogen tank flows through the air pipe and is ejected from the nozzle; since the nozzle is provided with four purge ports, when coke and other substances are not evenly distributed on the inner wall of the peephole valve, the blocking block and the nozzle are connected by bolts at the inner wall of the valve where there is no coke and other substances, so that the air knife of nitrogen ejected from the nozzle only purges the inner wall of the valve where there is coke and other substances, thereby improving the cleaning accuracy, reducing the nitrogen usage and saving costs.

[0007] Option 2 is the preferred option of the basic option. The connecting assembly includes a peephole cap, the nozzle and the peephole cap are fixed and penetrated, and the peephole cap and the peephole valve are detachably connected. When the peephole valve needs to be cleaned, the peephole cap can be replaced so that the purge nozzle can be extended into the peephole valve for easy purge. When purge is not required, the peephole cap with the nozzle can be replaced to reduce the wear of the nozzle.

[0008] Option three is the preferred option of option two. Four connecting plates are evenly distributed and fixed on the sides of the peephole valve and the peephole cover cap. A screw rod is movably passed through every two connecting plates, and a hand wheel is threadedly connected to the screw rod.

[0009] Option 4 is the preferred option of Option 2. A rubber sealing ring is provided between the peephole valve and the peephole cap to increase the sealing performance of the connection between the peephole valve and the peephole cap.

[0010] Option 5 is the preferred option of the basic option. The nitrogen tank is a nitrogen pressure-stabilizing buffer tank; it is used to stabilize the output pressure of nitrogen and ensure that the air pipe and nozzle obtain uniform and stable nitrogen.

[0011] Option six is the preferred option of the basic option. A tracheal valve is fixedly connected to the trachea. The tracheal valve is an electric single-seat regulating valve with the characteristic of small leakage.

[0012] Option seven is the preferred option of the basic option. A pressure gauge is fixed on the gas pipe. The pressure gauge is a stainless steel shock-resistant pressure gauge. The operating status of the nitrogen can be understood through the displayed pressure value to ensure stable operation of the nitrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional diagram of a peephole valve cleaning device for a hydrogen-rich carbon cycle oxygen blast furnace according to the present invention;

[0014] Figure 2 This is a right view of a peephole valve cleaning device for a hydrogen-rich carbon cycle oxygen blast furnace according to the present invention;

[0015] Figure 3 The utility model is a schematic diagram of the installation of a peephole valve cleaning device for a hydrogen-rich carbon circulating oxygen blast furnace. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below through specific implementation methods:

[0017] The reference numerals in the drawings of the specification include: 1. peephole valve, 2. peephole cap, 3. nozzle, 4. air pipe, 5. air pipe valve, 6. connecting plate, 7. pressure gauge, 8. nitrogen tank, 9. handwheel, 10. rubber sealing ring, 11. block, 12. purge port, 13. screw.

[0018] Example

[0019] like Figures 1 to 3 As shown: A hydrogen-rich carbon cycle oxygen blast furnace peephole valve cleaning device, including a nozzle 3, a purge port 12 is opened on the nozzle 3, a block 11 is nested in the purge port 12, the block 11 and the nozzle 3 are bolted together, the nozzle 3 is provided with a connecting assembly for connecting the nozzle 3, the connecting assembly includes a peephole cap 2, the nozzle 3 and the peephole cap 2 are fixedly penetrated, the peephole valve 1 and the peephole cap 2 are evenly fixed on the sides thereof, and four connecting plates 6 are evenly distributed and fixedly connected, with every two connecting plates 6 is movable through a screw 13, the screw 13 is threadedly connected to a handwheel 9, a rubber sealing ring 10 is provided between the peephole valve 1 and the peephole cap 2, the nozzle 3 is fixedly connected to the trachea 4, the trachea 4 is fixedly connected to a pressure gauge 7, the pressure gauge 7 is a stainless steel seismic pressure gauge, model: YN-100BF, the trachea 4 is fixedly connected to the trachea valve 5, the trachea valve 5 is an electric single-seat regulating valve, the trachea 4 is provided with a nitrogen tank 8, the nitrogen tank 8 is a nitrogen pressure-stabilizing buffer tank.

[0020] The implementation method of this embodiment is as follows: when the peephole valve needs to be cleaned, first determine the position of the coke and other substances on the inner wall of the peephole valve 1, then remove the block 11 at the corresponding position, then remove the original peephole cap 2, penetrate the peephole cap 2 with the nozzle 3 through the screw 13, and then thread the hand wheel 9 and the screw 13 to tightly connect the peephole cap 2 and the peephole valve 1, then open the tracheal valve 5, so that nitrogen is blown out from the corresponding purge port 12 in the form of an air knife to purge the coke and other substances; when the purge is completed, close the tracheal valve 5, and then turn the hand wheel 9 to separate the peephole cap 2 and the peephole valve 1, and replace it with the original peephole cap.

[0021] The above is only an embodiment of the present invention, and the commonly known specific structures and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A hydrogen-rich carbon cycle oxygen blast furnace peephole valve cleaning device, characterized in that: The invention comprises a nozzle (3), wherein the nozzle (3) is provided with four purge ports (12), a block (11) is nested in each of the purge ports (12), each of the block (11) is bolted to the nozzle (3), a connection assembly for connecting the nozzle (3) is provided on the nozzle (3), an air pipe (4) is fixedly connected to the nozzle (3), and a nitrogen tank (8) is provided on the air pipe (4).

2. A hydrogen-rich carbon cycle oxygen blast furnace peephole valve cleaning device according to claim 1, characterized in that The connecting assembly includes a peephole cap (2), the nozzle (3) and the peephole cap (2) are fixedly connected, and the peephole cap (2) and the peephole valve (1) are detachably connected.

3. A hydrogen-rich carbon cycle oxygen blast furnace peephole valve cleaning device according to claim 2, characterized in that: Four connecting plates (6) are evenly distributed and fixed on the circumference of the peephole valve (1) and the peephole cap (2), and a screw rod (13) is movably passed through every two of the connecting plates (6), and a hand wheel (9) is threadedly connected to the screw rod (13).

4. A hydrogen-rich carbon cycle oxygen blast furnace peephole valve cleaning device according to claim 2, characterized in that: A rubber sealing ring (10) is provided between the peephole valve (1) and the peephole cap (2).

5. The hydrogen-rich carbon cycle oxygen blast furnace peephole valve cleaning device according to claim 1 is characterized in that: The nitrogen tank (8) is a nitrogen pressure-stabilizing buffer tank.

6. The hydrogen-rich carbon cycle oxygen blast furnace peephole valve cleaning device according to claim 1 is characterized in that: A tracheal valve (5) is fixedly connected to the trachea (4), and the tracheal valve (5) is an electric single-seat regulating valve.

7. The hydrogen-rich carbon cycle oxygen blast furnace peephole valve cleaning device according to claim 1 is characterized in that A pressure gauge (7) is fixedly connected to the air pipe (4), and the pressure gauge (7) is a stainless steel shock-resistant pressure gauge.

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