A coke oven riser cover

Abstract

A riser cover for a coke oven comprises a riser cover, a flange seat, a pressure rod, a shaft, a bearing seat, a connecting rod, a drive cylinder and a drive cylinder seat. The flange seat is installed on the upper part of a tee pipe, and a sealing gas inlet and a sealing gas channel are processed at one end of the flange seat. The riser cover is installed and pressed on the flange seat in cooperation with the flange seat. An annular sealing gas channel is processed and arranged at the corresponding position of the riser cover and the flange sealing gas channel. The pressure rod is installed on the riser cover on one side of a bridge pipe, and one end of the pressure rod is fixedly installed in the middle position of the shaft. The shaft is installed in the bearing seat, and a connecting rod is assembled at one end of the shaft. The driving cylinder is installed at the lower part of the connecting rod, and the driving cylinder is fixedly installed on the driving cylinder seat. The bearing seat is installed on the bridge pipe, and the driving cylinder seat is installed on the bridge pipe. The present invention has a simple structure, small footprint, large operating space, and is convenient for operators to inspect and clean. The riser cover is driven by the driving cylinder, and the pressing force is large when the riser cover is closed, and the sealing effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of coke ovens, and in particular to a riser cover for coke ovens. Background Art

[0002] In traditional technology, the riser and bridge pipe connect the coke oven carbonization chamber and the gas collecting pipe to discharge the raw coal gas produced in the distillation process. The riser cover is opened before pushing the coke. During this period, the riser and bridge pipe are cleaned. After the coal loading is completed, the riser cover is closed and a water seal structure is adopted. Flowing water is used to maintain a certain water seal height to prevent gas from escaping and polluting the atmosphere.

[0003] The opening and closing operations of the riser cover are achieved through a manual pull rod or a cylinder. A counterweight is installed on the riser cover shaft to ensure that the pull rod force or cylinder force is reasonably distributed when the water seal cover is opened and closed. The traditional riser water seal cover is relatively bulky. There is not much operating space when opening the riser and bridge pipe to clean the riser and bridge pipe. It must be equipped with a circulating water pipeline system, which has a high cost. If a cylinder is used for opening and closing, a limit switch control must be added, the structure is complicated, and maintenance is difficult. Summary of the invention

[0004] The coke oven riser cover should leave enough space for cleaning the riser and bridge pipe after opening. Its opening and closing operations should be flexible and simple, and the operation should be reliable.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A riser cover for a coke oven comprises a riser cover, a flange seat, a pressure rod, a shaft, a bearing seat, a connecting rod, a driving cylinder and a driving cylinder seat. The flange seat is installed on the upper part of a tee pipe, a sealing gas inlet and a sealing gas passage are processed at one end of the flange seat, the riser cover is installed and pressed on the flange seat in cooperation with the flange seat, an annular sealing gas passage is processed and arranged at the corresponding position of the riser cover and the flange sealing gas passage, the pressure rod is installed on the riser cover on one side of a bridge pipe, one end of the pressure rod is fixedly installed in the middle position of the shaft, the shaft is installed in the bearing seat, a connecting rod is assembled at one end of the shaft, a driving cylinder is installed at the lower part of the connecting rod, the driving cylinder is fixedly installed on the driving cylinder seat, the bearing seat is installed on the bridge pipe, and the driving cylinder seat is installed on the bridge pipe.

[0007] The driving medium of the driving cylinder can be gas or liquid.

[0008] The riser cover and flange seat may be made of cast iron or cast steel structure.

[0009] The application method of the coke oven riser cover is as follows:

[0010] S1. Install the flange seat on the tee pipe, and the riser cover and the flange seat are installed on the flange seat in coordination. The sealing gas channel processed on the flange seat and the annular sealing gas channel processed on the riser cover are connected.

[0011] S2. According to the position of the riser cover and the shaft, a pressure rod is installed on the riser cover, the other end of the pressure rod is installed with the shaft, bearing seats are installed at both ends of the shaft, and the bearing seats are installed on the bridge tube.

[0012] S3. A connecting rod is installed at the tail of one end of the shaft, a driving cylinder is installed at the lower part of the connecting rod, the driving cylinder is fixed on the driving cylinder seat, and the driving cylinder seat is installed on the bridge pipe.

[0013] S4. When the riser cover is closed, the drive cylinder is installed on the bridge tube through the drive cylinder seat. When the drive cylinder rod is retracted, it drives the connecting rod and the shaft to rotate. The shaft and the pressure rod are keyed, and the pressure rod presses the riser cover. At this time, the drive cylinder still has a remaining stroke to maintain the drive cylinder pressure.

[0014] S5. The riser cover is pressed tightly against the flange seat, and the sealing gas is introduced at the sealing gas inlet. The sealing gas enters the annular sealing gas channel between the riser cover and the flange seat and maintains a certain pressure, which can effectively block the gas inside the riser and the external atmosphere, forming an annular gas sealing structure to meet the sealing requirements of the riser cover.

[0015] S6. When the riser cover needs to be opened, the drive cylinder rod extends outward, driving the connecting rod and the shaft to rotate, the pressure rod is loosened and drives the riser cover to rotate and open. When the drive cylinder is fully extended, it is the limit position for opening the riser cover, and the opening angle of the riser cover is greater than 90°.

[0016] The driving cylinder should have a residual stroke and maintain pressure when the riser cover is closed, and the driving cylinder should have no residual stroke when the riser cover is fully opened.

[0017] The tail end of the flange seat sealing gas channel is connected to the annular sealing gas channel in the riser cover.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1) A riser cover with an air-sealed structure has a small size, light weight, simple structure, and is easy to maintain. When opened to clean the riser and bridge pipe, there is a large operating space, which is convenient for operators to clean.

[0020] 2) Driven by a driving cylinder, the pressure is large when the riser cover is closed, and the sealing effect is good; there is no water seal structure, and there is no need to design a circulating water pipeline system, and the air seal structure is more reliable.

[0021] 3) The opening and closing operations are simple, no limit switch is required, the structure is simplified, and it is not prone to failure.

[0022] 4) The riser cover and flange seat are made of castings, which effectively avoids thermal deformation and reduces production and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic diagram of the structure of a coke oven riser cover.

[0024] Figure 2 The present invention is a top view of a coke oven riser cover.

[0025] Figure 3 The present invention is a diagram of the gas seal structure of a coke oven riser cover.

[0026] In the figure: 1. Rising pipe cover 2. Flange seat 3. Pressure rod 4. Shaft 5. Bearing seat 6. Connecting rod

[0027] 7. Driving cylinder 8. Driving cylinder seat 9. Tee pipe 10. Bridge pipe 11. Sealing gas inlet

[0028] 12. Sealed gas channel 13. Annular sealed gas channel DETAILED DESCRIPTION

[0029] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0030] like Figure 1 As shown, the present invention is a coke oven riser cover, comprising a riser cover 1, a flange seat 2, a pressure rod 3, a shaft 4, a bearing seat 5, a connecting rod 6, a driving cylinder 7, and a driving cylinder seat 8. The flange seat 2 is installed on the upper part of the tee pipe 9, and a sealing gas inlet 11 and a sealing gas channel 12 are processed at one end of the flange seat 2. The riser cover 1 is installed and pressed on the flange seat 2 in cooperation with the flange seat 2. An annular sealing gas channel 13 is processed and arranged at the corresponding position of the riser cover 1 and the flange sealing gas channel 12. When the riser cover 1 is closed, sealing gas is introduced into the annular sealing gas channel 13, and the flowing sealing gas serves as a sealing part. To ensure the sealing between the riser cover 1 and the flange seat 2, the pressure rod 3 is installed on the riser cover 1 on one side of the bridge pipe, one end of the pressure rod 3 is fixedly installed in the middle position of the shaft 4, the shaft 4 is installed in the bearing seat 5, the bearing seat 5 fixes the position of the shaft 4, one end of the shaft 4 is equipped with a connecting rod 6, and the lower part of the connecting rod 6 is installed with a driving cylinder 7, and the driving cylinder 7 is fixedly installed on the driving cylinder seat 8. When opened, the driving rod of the driving cylinder 7 extends out, driving the connecting rod 5 to move, and the shaft 4 and the pressure rod 3 rotate to open the riser cover 1, the bearing seat 5 is installed on the bridge pipe 10, and the driving cylinder seat 8 is installed on the bridge pipe 10.

[0031] The driving medium of the driving cylinder 7 can be gas or liquid.

[0032] The riser cover 1 and flange seat 2 may be made of cast iron or cast steel to avoid thermal deformation and reduce production and maintenance costs.

[0033] like Figure 1 , 2 As shown in , 3, the application method of the coke oven riser cover is as follows:

[0034] S1. Install the flange seat 2 on the tee pipe 9. The riser cover 1 and the flange seat 2 are cooperatively installed on the flange seat 2. The sealed gas passage 12 processed on the flange seat 2 and the annular sealed gas passage 13 processed on the riser cover 1 are connected.

[0035] S2. According to the positions of the riser cover 1 and the shaft 4, the pressure rod 3 is installed on the riser cover 1, the shaft 4 is installed on the other end of the pressure rod 3, the bearing seats 5 are installed on both ends of the shaft 4, and the bearing seats 5 are installed on the bridge tube 10.

[0036] S3. A connecting rod 6 is installed at the tail of one end of the shaft 4, a driving cylinder 7 is installed at the lower part of the connecting rod 6, the driving cylinder 7 is fixed on a driving cylinder seat 8, and the driving cylinder seat 8 is installed on the bridge tube 10.

[0037] S4. When the riser cover 1 is closed, the drive cylinder 7 is installed on the bridge tube 10 through the drive cylinder 8. When the drive cylinder 8 rod is retracted, it drives the connecting rod 6 and the shaft 4 to rotate. The shaft 4 and the pressure rod 3 are key-connected. The pressure rod 3 presses the riser cover 1. At this time, the drive cylinder 7 still has a remaining stroke to maintain the drive cylinder pressure.

[0038] S5. The riser cover 1 is pressed tightly against the flange seat 2, and the sealing gas is introduced at the sealing gas inlet 11. The sealing gas enters the annular sealing gas channel 13 between the riser cover 1 and the flange seat 2 and maintains a certain pressure, which can effectively block the gas inside the riser and the external atmosphere, forming an annular gas sealing structure to meet the sealing requirements of the riser cover.

[0039] S6. When the riser cover 1 needs to be opened, the drive cylinder 7 extends outward, driving the connecting rod 6 and the shaft 4 to rotate, the pressure rod 3 is loosened and drives the riser cover 1 to rotate and open. When the drive cylinder 7 is fully extended, it is the extreme opening position of the riser cover 1, and the opening angle of the riser cover 1 is greater than 90°.

[0040] The driving cylinder 7 should have a residual stroke and maintain pressure when the riser cover 1 is closed, and the driving cylinder 7 should have no residual stroke when the riser cover 1 is fully opened.

[0041] like Figure 3 As shown, the tail end of the sealing gas channel 12 of the flange seat 2 is connected to the annular sealing gas channel 13 in the riser cover 1. When the riser cover 1 is closed, the sealing gas enters the sealing gas channel 12 through the sealing gas inlet 11, and enters the annular sealing gas channel 13 through the sealing gas channel 12 to complete the gas sealing function.

[0042] The working principle of a riser cover for a coke oven according to the present invention is: the sealing gas inlet 11 and the sealing gas channel 12 processed on the flange seat 2 are connected with the annular sealing air channel 13 on the riser cover 1, and the sealing gas is connected to achieve gas sealing between the riser cover 1 and the flange seat 2. The driving cylinder rod of the driving cylinder 7 drives the connecting rod 6 to move, and at the same time drives the shaft 4 and the pressure rod 3 to rotate, so as to open and close the riser cover 1. The opening and closing functions of the riser cover 1 can be completed without a limit switch. The riser cover 1 is more flexible in movement, has a better sealing effect, and has a larger space, which is convenient for cleaning when opening.

[0043] The following examples are implemented on the premise of the technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.

[0044] [Example]

[0045] like Figure 1 , 2 As shown, according to design requirements, the riser cover 1 is installed on the flange seat 2, the flange seat 2 is installed on the tee pipe 9, the bearing seat 5 is installed on the bridge pipe 10, and the drive cylinder seat 8 is installed on the bridge pipe 10.

[0046] like Figure 3 As shown, the annular sealing gas passage 13 of the riser cover 1 is connected to the sealing gas passage 12 on the flange seat 2 .

[0047] like Figure 1 , 2 As shown, the pressure rod 3 is installed on the riser cover 1, the tail end of the pressure rod 3 is assembled in the middle position of the shaft 4, the connecting rod 6 is installed at one end of the shaft 4, the driving cylinder 7 is installed at the lower part of the connecting rod 6, the shaft 4 is fixed by the bearing seat 5, and the driving cylinder 7 is fixed by the driving cylinder seat 8.

[0048] When the riser cover 1 is closed, the driving cylinder 7 is installed on the bridge pipe 10 through the driving cylinder 8. When the driving cylinder 8 rod is retracted, it drives the connecting rod 6 and the shaft 4 to rotate. The shaft 4 and the pressure rod 3 are key-connected. The pressure rod 3 presses the riser cover 1. At this time, the driving cylinder 7 still has a remaining stroke. The driving cylinder pressure is maintained, and the riser cover 1 is pressed tightly on the flange seat 2. The sealing gas is introduced at the sealing gas inlet 11. The sealing gas enters the annular sealing gas channel 13 between the riser cover 1 and the flange seat 2 and maintains a certain pressure, which can effectively block the internal gas of the riser and the external atmosphere, forming an annular gas sealing structure to meet the sealing requirements of the riser cover.

[0049] When the riser cover 1 needs to be opened, the drive cylinder 7 extends outward, driving the connecting rod 6 and the shaft 4 to rotate, the pressure rod 3 is loosened and drives the riser cover 1 to rotate and open. When the drive cylinder 7 is fully extended, it is the extreme position for opening the riser cover 1, and the opening angle of the riser cover 1 is greater than 90°.

[0050] During use, the present invention has a simple structure, occupies a small area, has a large operating space, and is convenient for operators to perform maintenance and cleaning. It is driven by a drive cylinder, and has a large pressing force when the riser cover is closed, and has a good sealing effect. There is no water seal structure, and there is no need to design a circulating water pipeline system, and the air seal structure has a more reliable seal.

Claims

1. A coke oven riser cover, comprising a riser cover, a flange seat, a pressure rod, a shaft, a bearing seat, a connecting rod, a drive cylinder, and a drive cylinder seat, characterized in that: The flange seat is installed on the upper part of the tee pipe, and a sealing gas inlet and a sealing gas channel are processed at one end of the flange seat. The riser cover is installed and pressed on the flange seat in cooperation with the flange seat, and an annular sealing gas channel is processed and arranged at the corresponding position of the riser cover and the flange sealing gas channel. The pressure rod is installed on the riser cover on one side of the bridge pipe, and one end of the pressure rod is fixedly installed in the middle position of the shaft. The shaft is installed in the bearing seat, and a connecting rod is assembled at one end of the shaft. A driving cylinder is installed at the lower part of the connecting rod, and the driving cylinder is fixedly installed on the driving cylinder seat. The bearing seat is installed on the bridge pipe, and the driving cylinder seat is installed on the bridge pipe. When the riser cover is closed, the driving cylinder should have a residual stroke and maintain pressure. When the riser cover is fully opened, the driving cylinder has no residual stroke. An application method based on a coke oven riser cover includes the following contents: S1. Install the flange seat on the tee pipe, and the riser cover and the flange seat are installed on the flange seat in coordination, and the sealing gas channel processed on the flange seat and the annular sealing gas channel processed on the riser cover are connected; S2. According to the position of the riser cover and the shaft, a pressure rod is installed on the riser cover, the shaft is installed on the other end of the pressure rod, bearing seats are installed on both ends of the shaft, and the bearing seats are installed on the bridge pipe; S3. A connecting rod is installed at the tail end of one end of the shaft, a drive cylinder is installed at the lower part of the connecting rod, the drive cylinder is fixed on the drive cylinder seat, and the drive cylinder seat is installed on the bridge tube; S4. When the riser cover is closed, the drive cylinder is installed on the bridge tube through the drive cylinder seat. When the drive cylinder rod is retracted, the connecting rod and the shaft are driven to rotate. The shaft and the pressure rod are keyed, and the pressure rod presses the riser cover. At this time, the drive cylinder still has a remaining stroke to maintain the pressure of the drive cylinder; S5. The riser cover is pressed tightly against the flange seat, and the sealing gas is introduced at the sealing gas inlet. The sealing gas enters the annular sealing gas channel between the riser cover and the flange seat and maintains a certain pressure, which can effectively block the gas inside the riser and the external atmosphere, forming an annular gas sealing structure to meet the sealing requirements of the riser cover; S6. When the riser cover needs to be opened, the drive cylinder rod extends outward, driving the connecting rod and the shaft to rotate, the pressure rod is loosened and drives the riser cover to rotate and open. When the drive cylinder is fully extended, it is the limit position for the riser cover to open, and the opening angle of the riser cover is greater than 90°.

2. A coke oven riser cover according to claim 1, characterized in that: The driving medium of the driving cylinder is gas or liquid.

3. A coke oven riser cover according to claim 1, characterized in that: The riser cover and flange seat are made of cast iron or cast steel structure.

4. A coke oven riser cover according to claim 1, characterized in that: The tail end of the flange seat sealing gas channel is connected to the annular sealing gas channel in the riser cover.

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