Grouting sealing device for brick gas passage of coke oven

Abstract

The utility model discloses a coke oven brick gas channel grouting sealing device, which belongs to the technical field of coke oven body maintenance and comprises a grouting head. The grouting head comprises an upper end part connected with the lower end of the brick gas channel vertical pipe and a lower end part communicated with the feeding pipe; the upper end part and the lower end part are cylinders with two open ends, and the inner diameter of the upper end part is equal to that of the brick gas channel; the inner diameter of the lower end part is greater than that of the upper end part; the lower end of the upper end part is connected with the upper end of the lower end part through an upper annular plate; the lower end of the lower end part is connected with a lower connecting plate; a first mounting hole connected with the overflow pipe and a feeding hole connected with the feeding pipe are formed in the lower connecting plate; the outer diameter of the overflow pipe is smaller than the inner diameter of the brick coal gas channel vertical pipe; the upper end of the overflow pipe sequentially penetrates through the first mounting holes from bottom to top and then goes deep into the brick coal gas channel. The outer diameter of the overflow pipe is equal to the inner diameter of the first mounting hole; the lower end of the overflow pipe is connected with a discharge pipe; and the grouting head is connected with the feeding pipe through the feeding hole.

Description

Technical Field

[0001] The utility model belongs to the technical field of coke oven body maintenance, and in particular relates to a coke oven brick gas duct grouting and sealing device. Background Art

[0002] During the operation of the coke oven brick gas duct, due to the influence of factors such as thermal expansion and contraction of the furnace body and the increase in furnace age, the brick gas duct will form misalignment and cracks, and the sealing will be reduced, causing coke oven gas leakage, which will seriously affect the normal heating of the coke oven and the flue gas indicators.

[0003] The traditional treatment method is to spray and seal the gas duct of the coke oven bricks, which has the following disadvantages: 1. The spraying height is difficult to grasp, and it is mainly estimated by compressed air pressure. Sometimes the spraying is not enough and has no effect. Sometimes the spraying height is too high, and the slurry enters the vertical fire channel, blocking the vertical fire channel and the inclined channel. A leak needs to be sprayed several times before it can be treated. 2. The spraying amount is difficult to grasp. The brick gas duct can only be coated with slurry on the surface. The brick seam position is difficult to handle, and the sealing time is short. For furnaces with serious leakage, the treatment effect is not good.

[0004] Therefore, the coke oven brick gas duct sealing device and method must be improved. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a coke oven brick gas duct grouting and sealing device, which can quickly and conveniently perform grouting and sealing on the coke oven brick gas duct.

[0006] The technical solution adopted by the utility model is:

[0007] A coke oven brick gas duct grouting and sealing device comprises a grouting head; the grouting head comprises an upper end connected to the lower end of the brick gas duct riser and a lower end connected to a feed pipe; the upper end and the lower end are both cylindrical with openings at both ends, and the inner diameter of the upper end is equal to the inner diameter of the brick gas duct; the inner diameter of the lower end is larger than the inner diameter of the upper end; the lower end of the upper end is connected to the upper end of the lower end through an upper annular plate; the lower end of the lower end is connected to a lower connecting plate; a No. 1 mounting hole connected to an overflow pipe and a feed hole connected to a feed pipe are provided on the lower connecting plate; the outer diameter of the overflow pipe is smaller than the inner diameter of the brick gas duct riser; the upper end of the overflow pipe passes through the No. 1 mounting hole in sequence from bottom to top and penetrates into the brick gas duct; the outer diameter of the overflow pipe is equal to the inner diameter of the No. 1 mounting hole; the lower end of the overflow pipe is connected to a discharge pipe; the grouting head is connected to the feed pipe through the feed hole.

[0008] In a feasible technical solution, the overflow pipe is formed by splicing a plurality of pipes in sequence.

[0009] In a feasible technical solution, two adjacent pipes are connected via a flange.

[0010] In a feasible technical solution, a feed valve is provided on the feed pipe.

[0011] In a feasible technical solution, a storage tank is arranged below the outlet of the discharge pipe.

[0012] In a feasible technical solution, the grouting head is connected to the brick gas duct riser via a connecting head.

[0013] In a feasible technical solution, the No. 1 mounting hole and the grouting head are in a coaxial relationship.

[0014] Compared with the prior art, the advantages and positive effects of this application are:

[0015] The utility model can quickly and conveniently perform grouting and sealing on the gas channel of the coke oven bricks.

[0016] The utility model can change the height of the overflow pipe, that is, freely adjust the height of the part requiring grouting according to needs, thereby solving the problem that the height point of the spraying is difficult to grasp only by estimating the compressed air pressure, and avoiding inadequate sealing or slurry entering the vertical fire channel. By utilizing this device, full sealing of the brick gas duct can be achieved, and the sealing effect of the brick gas duct with serious leakage is good and the durability is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, 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 paying creative work.

[0018] Figure 1 It is a structural diagram of a preferred embodiment of the utility model;

[0019] Among them: 1. Storage tank; 2. Discharge pipe; 3. Grouting head; 4. Connecting head; 5. Brick gas duct riser; 6. Overflow pipe; 7. Feed valve; 8. Feed pipe; 9. Furnace wall; 10. Overflow port; 11. Brick gas duct. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0021] In the description of the invention of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention of the utility model can be understood according to specific circumstances.

[0022] See also Figure 1 , a coke oven brick gas duct grouting and sealing device, comprising:

[0023] The grouting head 3 includes an upper end connected to the lower end of the brick gas duct riser 5 and a lower end connected to the feed pipe 8; the grouting head 3 can be connected to the brick gas duct riser 5 through a connector 4;

[0024] The upper end and the lower end are both cylindrical with openings at both ends. The inner diameter of the upper end is equal to the inner diameter of the brick gas channel 11; the inner diameter of the lower end is larger than the inner diameter of the upper end; the lower end of the upper end is connected to the upper end of the lower end through an upper annular plate; the lower end of the lower end is connected to a lower connecting plate; the lower connecting plate is provided with a No. 1 mounting hole connected to the overflow pipe 6 and a feed hole connected to the feed pipe; the outer diameter of the overflow pipe is smaller than the inner diameter of the brick gas channel riser; the upper end of the overflow pipe passes through the No. 1 mounting hole from bottom to top in sequence and penetrates into the brick gas channel; the outer diameter of the overflow pipe is equal to the inner diameter of the No. 1 mounting hole; the lower end of the overflow pipe is connected to a discharge pipe; the grouting head is connected to the feed pipe through the feed hole. The upper end of the overflow pipe 6 is an overflow port 10; the overflow pipe is formed by splicing a number of pipes in sequence. Two adjacent pipes are connected by flanges. A feed valve 7 is provided on the feed pipe. A storage tank 1 may be provided below the outlet of the discharge pipe 2. The grouting head is connected to the brick gas duct riser through a connector. The No. 1 mounting hole and the grouting head are in a coaxial relationship.

[0025] In the above embodiment, the grouting head is a hollow tubular structure, the tube passing through the middle is an overflow pipe, and the upper part of the overflow pipe is threaded.

[0026] The brick gas duct riser is a steel pipe of a certain diameter, which is the original equipment of the coke oven. The lower part thereof is provided with threads, and the grouting head is threadedly connected with the brick gas duct riser through a 4-connector.

[0027] The brick gas duct standpipe is embedded in the brick gas duct 11 , and the brick gas duct 11 is surrounded by furnace walls 9 .

[0028] The lower opening of the grouting head is connected to a feed pipe 8, on which a feed valve is provided for opening, closing and regulating. The inlet of the feed pipe is connected to a compressed air slurry supply device (known technology, which will not be described in detail).

[0029] The overflow pipe is also a steel pipe, which is divided into sections, each section is connected by threads, and the length of the overflow pipe can be freely changed by connecting pipes with different numbers of sections.

[0030] The lower end of the overflow pipe is connected to the discharge pipe.

[0031] A storage tank is arranged at the outlet of the discharge pipe to receive the slurry discharged from the discharge pipe.

[0032] The method of using the utility model is:

[0033] For the brick gas duct that needs to be grouted and sealed, the operation should be carried out during the downward airflow (when there is no gas). Before the operation, remove the four-way head connected to the lower part of the brick gas duct riser (the original structure, not shown in the figure), and use an iron chisel (rebar) to dredge the brick gas duct riser and gas duct to prevent blockage of bricks, etc. After the dredging is completed, select overflow pipes of different lengths according to the height of the leakage location, connect them, insert them into the vertical fire duct (you can insert the pipe first and then connect it to adapt to the working space of the coke oven basement), connect the grouting head to the brick gas duct riser through the connector, and then you can prepare for grouting. Connect the storage tank, slowly open the compressed air slurry supply device, adjust the compressed air pressure, ensure a stable supply of slurry, the slurry passes through the feed pipe, enters the grouting head, and then enters between the overflow pipe and the brick gas duct, until the slurry passes through the overflow port, overflows to the overflow pipe, and finally is discharged through the discharge port and enters the storage tank. The slurry in the storage tank can be reused.

[0034] As long as the slurry is in an overflow state, it can be ensured that the space between the overflow pipe of a set height and the brick gas duct is filled with slurry, and then the slurry penetrates into the brick joints to seal the brick joints.

[0035] After the grouting and sealing is completed, turn off the compressed air slurry supply device. After the slurry has fallen back, remove the connection between the device and the brick gas duct riser, remove it, clear it again with an iron chisel (threaded steel bar), restore the connection to the four-way head, and return to normal.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A coke oven brick gas duct grouting and sealing device, characterized in that: The grouting head (3) comprises an upper end connected to the lower end of a brick gas duct riser (5) and a lower end connected to a feed pipe (8); the upper end and the lower end are both cylindrical with both ends open, and the inner diameter of the upper end is equal to the inner diameter of the brick gas duct (11); the inner diameter of the lower end is greater than the inner diameter of the upper end; the lower end of the upper end is connected to the upper end of the lower end through an upper annular plate; the lower end of the lower end is connected to a lower connecting plate; the lower connecting plate is open A No. 1 mounting hole connected to an overflow pipe (6) and a feed hole connected to a feed pipe (8) are provided; the outer diameter of the overflow pipe (6) is smaller than the inner diameter of the brick gas duct riser (5); the upper end of the overflow pipe (6) passes through the No. 1 mounting hole in sequence from bottom to top and penetrates into the brick gas duct (11); the outer diameter of the overflow pipe (6) is equal to the inner diameter of the No. 1 mounting hole; the lower end of the overflow pipe (6) is connected to a discharge pipe (2); and the grouting head (3) is connected to the feed pipe (8) through the feed hole.

2. The coke oven brick gas duct grouting and sealing device according to claim 1, characterized in that: The overflow pipe (6) is formed by splicing a plurality of pipes in sequence.

3. The coke oven brick gas duct grouting and sealing device according to claim 2, characterized in that: Two adjacent pipes are connected by flanges.

4. The coke oven brick gas duct grouting and sealing device according to claim 1, characterized in that: The feed pipe (8) is provided with a feed valve (7).

5. The coke oven brick gas duct grouting and sealing device according to claim 1, characterized in that: A material storage tank (1) is arranged below the outlet of the discharge pipe (2).

6. The coke oven brick gas duct grouting and sealing device according to claim 1, characterized in that: The grouting head (3) is connected to the brick gas duct riser (5) via a connecting head (4).

7. The coke oven brick gas duct grouting and sealing device according to claim 1, characterized in that: The No. 1 mounting hole and the grouting head (3) are in a coaxial relationship.

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