Mechanical counterweight type carbonization chamber pressure stabilizing method and device

Abstract

The invention relates to the technical field of coke ovens, and particularly discloses a mechanical counterweight type carbonization chamber pressure stabilizing method and device, which comprises a carbonization chamber, a raw gas outlet, an ascending pipe seat, an ascending pipe, a three-way bridge pipe, a water seal cover and a self-adjusting valve plate device, the pressure intensity in a space container among the carbonization chamber, the raw gas outlet, the ascending pipe seat, the ascending pipe, the three-way bridge pipe and the water seal cover is equal to the pressure intensity formed by the weight of the self-adjusting valve plate and the vertical force component of the normal force of the pressure-bearing surface of the self-adjusting valve plate, and the pressure of the carbonization chamber is constant due to the weight of the self-adjusting valve plate. The self-debugging valve plate device is arranged, a self-weight type pressure intensity structure is adopted to achieve control over constant pressure of the carbonization chamber, automatic stability adjustment of constant pressure of the coke oven carbonization chamber is achieved, the self-debugging valve plate device is of a simplified mechanical structure, and reliable adjustment of the pressure of the coke oven carbonization chamber is achieved; the potential safety hazard of electronic component failure under the high-temperature flame working condition is eliminated, and the potential safety hazard caused by misleading control errors is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of coke ovens, and in particular to a mechanical counterweight carbonization chamber pressure stabilization method and device. Background Art

[0002] Coke oven monotony is a coke oven pressure control system that regulates the pressure of a single carbonization chamber of the coke oven. Its purpose is to reduce or eliminate pollutant emissions during the coke oven coaling and coking process. At the same time, it can also improve the quality of coke, reduce furnace wall leakage, and increase the output and quality of tar and benzene in raw gas. In a complete coking cycle, the amount of gas generated varies greatly, and is related to the moisture, composition, fire channel temperature and coking time of the coal entering the furnace. Through the single-hole pressure regulation technology, the pressure of the bridge pipe pressure measuring point that characterizes the gas pressure in the carbonization chamber is taken as the control object. Combined with the gas generation law of the carbonization chamber during the coking process, with the help of the optimal control mode, the actual pressure of the carbonization chamber can be kept stable. For example, PROven technology adjusts the gas flow cross-sectional area by adjusting the liquid level in the fixed cup, so that the gas pressure in the carbonization chamber is maintained in a slightly positive pressure state under the condition of high negative pressure in the gas collecting pipe; CPS technology adjusts the gas flow cross-sectional area by rotating the water seal valve around the axis through the cylinder during the coking process, thereby adjusting the pressure in the carbonization chamber.

[0003] In addition, the use of appropriate single-hole pressure regulating technology and operating system can also meet the requirements of smokeless coal loading, such as reducing the smoke and fire of the coke oven in the early stage of coal loading, preventing the negative pressure of the carbonization chamber from sucking in air at the end of coking, etc. At the same time, this also helps to avoid the leakage of raw coal gas from the furnace door in the early stage of coking, and effectively cut off the connection between the gas collecting pipe and the atmosphere when removing graphite at the top of the carbonization chamber and the root of the riser at the end of coking. Different single-hole carbonization chamber pressure regulating technologies have their own characteristics and applicability. In practical applications, they need to be selected and optimized according to specific circumstances to achieve better environmental protection and production effects.

[0004] At present, there are basically two types of monotonic systems in China: one is to add a regulating valve between the top of the straight section of the riser and the bridge pipe, and at the same time add a hydraulic system for adjustment and control to adjust the flow area of ​​the raw coal gas; the other is to add a water-seal isolation valve at the upper end of the bell-and-socket joint of the gas collecting pipe at the lower end of the bridge pipe to adjust the gas-liquid flow area. The independent monotonic device adjusts the valve opening according to the detected pressure feedback and coking time, and then controls the pressure of the single carbonization chamber. Regardless of the pressure regulation method, the signal feedback from the pressure measuring point is required as the driving force for the adjustment action of the regulating valve.

[0005] However, since the furnace doors on both sides and the top of the coke oven are flame areas, any measurement and control instruments will fail in the flame area, posing a safety hazard. In addition, it is necessary to complete the installation of complex system equipment and auxiliary actuators in the existing crowded space of the riser. From the current actual operation results, it is impossible to complete the functions required by the design.

[0006] Therefore, it is necessary to propose a mechanical counterweight carbonization chamber pressure stabilization method and device to overcome the defects of the prior art. Summary of the invention

[0007] The purpose of the present invention is to solve the problems in the prior art and to provide a method and device for stabilizing pressure in a mechanically counterweighted carbonization chamber.

[0008] The technical solution of the present invention is: A mechanical counterweight carbonization chamber pressure stabilization method, i.e., a method for achieving a dynamic constant pressure in the sealing space from the carbonization chamber to the self-adjusting valve plate device during the circulation of the raw gas distilled from the carbonization chamber, wherein the method maintains a constant pressure between the weight of the self-adjusting valve plate of the self-adjusting valve plate device and the sealing surface of the self-adjusting valve plate, including: A. Determine the weight of the self-adjusting valve plate device and keep the weight of the self-adjusting valve plate device constant; B. Obtain the pressure of the space container formed between the carbonization chamber, the raw gas outlet, the riser pipe seat and the self-adjusting valve plate device, or obtain the constant pressure of the space formed between the carbonization chamber, the raw gas outlet, the riser pipe seat, the riser pipe, the three-way bridge pipe, the water seal cover and the self-adjusting valve plate device; C. Make the pressure in the space container equal to the pressure formed by the weight of the self-adjusting valve plate device and the component of the normal force of its pressure-bearing surface; D. The sealing pressure-bearing surface angle of the self-adjusting valve plate device is adjustable, so that the normal force of the sealing pressure-bearing surface can be adjusted, so that the pressure in the carbonization chamber can be adjusted.

[0009] A mechanical counterweight carbonization chamber pressure stabilizing device comprises a carbonization chamber, a raw gas outlet, a riser pipe seat, a riser pipe, a three-way bridge pipe and a water seal cover, wherein the raw gas outlet, the riser pipe seat, the riser pipe, the three-way bridge pipe and the water seal cover are sequentially arranged on the carbonization chamber, and further comprises a self-adjusting valve plate device, wherein the self-adjusting valve plate device adopts a cap-type valve plate structure or a rotary valve plate structure, and the self-adjusting valve plate device is arranged between the riser pipe seat and the riser pipe, or between the riser pipe and the three-way bridge pipe, or on the three-way bridge pipe.

[0010] Preferably, the self-adjusting valve plate device includes a vertical cylindrical valve seat and a valve bonnet. The vertical cylindrical valve seat is arranged on the flange between the riser pipe seat and the riser pipe. The valve bonnet is gap-mounted on the vertical cylindrical valve seat. The valve bonnet includes a bonnet top and a bonnet tube. The length of the bonnet tube is smaller than the height of the vertical cylindrical valve seat.

[0011] Preferably, the self-adjusting valve plate device includes a vertical cylindrical valve seat and a valve bonnet. The vertical cylindrical valve seat is arranged on the flange between the riser pipe seat and the riser pipe. The valve bonnet is gap-mounted on the vertical cylindrical valve seat. The valve bonnet includes a bonnet top and a bonnet tube. The length of the bonnet tube is greater than the height of the vertical cylindrical valve seat.

[0012] Preferably, the self-adjusting valve plate device includes a self-adjusting valve seat and a self-adjusting valve plate. The self-adjusting valve seat is arranged at the interface between the horizontal section and the vertical section of the three-way bridge pipe. The self-adjusting valve plate is connected to the self-adjusting valve seat through a self-adjusting valve shaft pivot. The self-adjusting valve shaft is arranged at a position above the center of gravity of the self-adjusting valve plate.

[0013] Preferably, a quick inspection hole is provided on the pipe wall of the horizontal section of the three-way bridge pipe, and the quick inspection hole is connected by a flange.

[0014] Preferably, the self-adjusting valve plate device includes an upper flange, a lower flange, a self-adjusting valve seat and a self-adjusting valve plate, the upper flange is arranged at the upper end of the vertical section of the three-way bridge pipe, the lower flange is arranged at the lower end of the vertical section of the three-way bridge pipe, a self-adjusting valve frame is arranged between the upper flange and the lower flange, the self-adjusting valve seat is arranged on the self-adjusting valve frame, and the self-adjusting valve plate is connected to the self-adjusting valve seat through a self-adjusting valve shaft pivot.

[0015] Preferably, both ends of the self-adjusting valve shaft penetrate to both sides and extend to the outside of the three-way bridge tube wall, one end of the self-adjusting valve shaft located outside the three-way bridge tube wall is provided with a crank handle, and backblowing gas is provided at the position where the self-adjusting valve shaft penetrates the three-way bridge tube wall to prevent the self-adjusting valve shaft from coking.

[0016] Preferably, the surface of the self-adjusting valve plate device is sprayed with a nano anti-stick coating.

[0017] Preferably, one end of the self-regulating valve seat is pivotally connected to the three-way bridge tube, and the other end of the self-regulating valve seat is connected to the three-way bridge tube through an adjusting mechanism. The adjusting mechanism includes a bearing seat, a ball screw and a screw nut. The bearing seat is hinged to the three-way bridge tube, and the ball screw passes through and is rotatably arranged on the bearing seat. The screw nut is sleeved on the ball screw and cooperates with the ball screw nut. A nut block is arranged on the screw nut, and the nut block is hinged to the self-regulating valve seat. A driving wheel is fixed to the end of the ball screw close to the bearing seat.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The present invention adopts a self-adjusting valve plate device and a self-weight pressure structure to achieve constant control of the carbonization chamber pressure, thereby achieving autonomous stability adjustment of the constant pressure in the carbonization chamber of the coke oven. The self-adjusting valve plate device adopts a simplified mechanical structure to achieve reliable adjustment of the pressure in the carbonization chamber of the coke oven, thereby eliminating the safety hazards of burning out and high-temperature failure of the instrument feedback control system based on electronic components under high-temperature flame conditions at the top of the coke oven, avoiding the hidden dangers caused by misleading control errors, and having higher stability and safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention; Figure 2 This is a structural schematic diagram of a self-adjusting valve plate device according to Embodiment 1 of the present invention; Figure 3 This is a structural schematic diagram of a self-adjusting valve plate device according to a second embodiment of the present invention; Figure 4 This is a structural diagram of Embodiment 3 of the present invention; Figure 5 The structure of the self-adjusting valve plate device of the third embodiment of the present invention is shown in FIG. Figure 1 ; Figure 6 The structure of the self-adjusting valve plate device of the third embodiment of the present invention is shown in FIG. Figure 2 ; Figure 7 This is a structural diagram of Embodiment 4 of the present invention; Figure 8 The structure of the self-adjusting valve plate device of the fourth embodiment of the present invention is shown in FIG. Figure 1 ; Fig. 9 The structure of the self-adjusting valve plate device of the fourth embodiment of the present invention is shown in FIG. Figure 2 ; Fig.10 This is a structural diagram of Embodiment 5 of the present invention; Fig.11 This is a schematic diagram of the front view of the self-adjusting valve plate device according to the fifth embodiment of the present invention; Fig.12 This is a schematic diagram of the top view of the self-adjusting valve plate device according to the fifth embodiment of the present invention.

[0020] Among them, 1. Carbonization chamber; 2. Raw gas outlet; 3. Rising pipe seat; 4. Rising pipe; 5. Three-way bridge pipe; 6. Water seal cover; 7. Self-adjusting valve plate device; 70. Vertical cylindrical valve seat; 71. Valve bonnet; 711. Cap top; 712. Cap tube; 72. Self-adjusting valve seat; 73. Self-adjusting valve plate; 74. Self-adjusting valve shaft; 75. Upper flange; 76. Lower flange; 77. Self-adjusting valve frame; 78. Quick inspection hole; 8. Adjustment mechanism; 81. Bearing seat; 82. Ball screw; 83. Screw nut; 84. Nut block; 85. Driving wheel. DETAILED DESCRIPTION

[0021] In order to make the technical means, technical features, invention objectives and technical effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific illustrations.

[0022] A mechanical counterweight carbonization chamber pressure stabilization method, i.e., a method for achieving a dynamic constant pressure in the carbonization chamber 1 to the sealing space of the self-adjusting valve plate device 7 during the circulation of the raw gas distilled out of the carbonization chamber 1, wherein the method maintains a constant pressure between the weight of the self-adjusting valve plate 73 of the self-adjusting valve plate device 7 and the sealing surface of the self-adjusting valve plate 73, including: A. Determine the weight of the self-adjusting valve plate device 7 and keep the weight of the self-adjusting valve plate device 7 constant; B. Obtain the pressure of the space container formed between the carbonization chamber 1, the raw gas outlet 2, the riser pipe seat 3 and the self-adjusting valve plate device 7, or obtain the constant pressure of the space formed between the carbonization chamber 1, the raw gas outlet 2, the riser pipe seat 3, the riser pipe 4, the three-way bridge pipe 5, the water seal cover 6 and the self-adjusting valve plate device 7; C. Make the pressure in the space container equal to the pressure formed by the weight of the self-adjusting valve plate device 7 and the component of the normal force of its pressure-bearing surface; D. The sealing pressure-bearing surface angle of the self-adjusting valve plate device 7 is adjustable, so that the normal force of the sealing pressure-bearing surface can be adjusted, so that the pressure in the carbonization chamber 1 can be adjusted.

[0023] Embodiment 1 like Figure 1 and Figure 2 As shown, a mechanical counterweight carbonization chamber 1 pressure stabilizing device comprises a carbonization chamber 1, a raw gas outlet 2, a riser pipe seat 3, a riser pipe 4, a three-way bridge pipe 5, a water seal cover 6 and a self-adjusting valve plate device 7. The raw gas outlet 2, the riser pipe seat 3, the riser pipe 4, the three-way bridge pipe 5 and the water seal cover 6 are sequentially connected to the carbonization chamber 1 from bottom to top, and the connection between them adopts a flange connection, which is reliable and easy to disassemble and assemble. The self-adjusting valve plate device 7 adopts a cap-type valve plate structure, and the self-adjusting valve plate device 7 is installed between the riser pipe seat 3 and the riser pipe 4. like Figure 2As shown, the self-adjusting valve plate device 7 includes a vertical cylindrical valve seat 70 and a valve bonnet 71. The vertical cylindrical valve seat 70 is installed on the flange between the riser pipe seat 3 and the riser pipe 4. The valve bonnet 71 is sleeved on the vertical cylindrical valve seat 70. The valve bonnet 71 includes a bonnet top 711 and a bonnet barrel 712. The bonnet top 711 and the bonnet barrel 712 are integrally processed. The length dimension of the bonnet barrel 712 is smaller than the height dimension of the vertical cylindrical valve seat 70. After the valve bonnet 71 is vertically sleeved on the vertical cylindrical valve seat 70, the sealing surface is the bottom surface of the bonnet top 711 of the valve bonnet 71 and the barrel top surface of the vertical cylindrical valve seat 70. The ratio of the weight of the valve bonnet 71 to the barrel inner area of ​​the vertical cylindrical valve seat 70 is the actual pressure value that needs to be controlled in the carbonization chamber 1. The surfaces of the vertical cylindrical valve seat 70 and the valve bonnet 71 are sprayed with a nano anti-stick coating. Preferably, the thickness of the nano anti-stick coating in this embodiment is not more than 0.4 mm.

[0024] Embodiment 2 like Figure 1 and Figure 3 As shown, a mechanical counterweight carbonization chamber 1 pressure stabilizing device comprises a carbonization chamber 1, a raw gas outlet 2, a riser pipe seat 3, a riser pipe 4, a three-way bridge pipe 5, a water seal cover 6 and a self-adjusting valve plate device 7. The raw gas outlet 2, the riser pipe seat 3, the riser pipe 4, the three-way bridge pipe 5 and the water seal cover 6 are sequentially connected to the carbonization chamber 1 from bottom to top, and are connected to each other in a flange connection, which is reliable and easy to disassemble and assemble. The self-adjusting valve plate device 7 adopts a cap-type valve plate structure, and the self-adjusting valve plate device 7 is installed between the riser pipe seat 3 and the riser pipe 4.

[0025] like Figure 3 As shown, the self-adjusting valve plate device 7 includes a vertical cylindrical valve seat 70 and a valve bonnet 71. The vertical cylindrical valve seat 70 is installed on the flange between the riser pipe seat 3 and the riser pipe 4. The valve bonnet 71 is sleeved on the vertical cylindrical valve seat 70. The valve bonnet 71 includes a bonnet top 711 and a bonnet barrel 712. The bonnet top 711 and the bonnet barrel 712 are integrally processed. The length of the bonnet barrel 712 is greater than the height of the vertical cylindrical valve seat 70. After the valve bonnet 71 is vertically sleeved on the vertical cylindrical valve seat 70, the top surface of the vertical cylindrical valve seat 70 and the bonnet are in contact with each other. A gap is left between the bottom surface of the top 711, and the sealing surface is the bottom edge of the cap tube 712 of the valve bonnet 71 and the bottom surface of the vertical cylindrical valve seat 70. The pressure at this time is the ratio of the weight of the valve bonnet 71 to the inner bottom area of ​​the cap top 711 of the valve bonnet 71. The maximum flow area between the vertical cylindrical valve seat 70 and the valve bonnet 71 is not less than the cross-sectional area of ​​the riser 4. The surfaces of the vertical cylindrical valve seat 70 and the valve bonnet 71 are sprayed with a nano anti-stick coating. Preferably, the thickness of the nano anti-stick coating in this embodiment is not more than 0.4 mm.

[0026] Embodiment 3 like Figure 4-Figure 6As shown, a mechanical counterweight carbonization chamber 1 pressure stabilizing device comprises a carbonization chamber 1, a raw gas outlet 2, a riser pipe seat 3, a riser pipe 4, a three-way bridge pipe 5, a water seal cover 6 and a self-adjusting valve plate device 7. The raw gas outlet 2, the riser pipe seat 3, the riser pipe 4, the three-way bridge pipe 5 and the water seal cover 6 are sequentially connected to the carbonization chamber 1 from bottom to top, and are connected to each other in a flange connection manner, which is reliable and easy to disassemble and assemble. The self-adjusting valve plate device 7 adopts a rotary valve plate structure, and the self-adjusting valve plate device 7 is installed on the three-way bridge pipe 5.

[0027] like Figure 5 and Figure 6 As shown, the self-adjusting valve plate device 7 includes a self-adjusting valve seat 72 and a self-adjusting valve plate 73. The self-adjusting valve seat 72 is connected to the interface between the horizontal section and the vertical section of the three-way bridge pipe 5. The self-adjusting valve seat 72 is tilted and is a horizontal inclined structure, and its tilt angle is adjustable. Specifically, one end of the self-adjusting valve seat 72 is connected to the three-way bridge pipe 5 in a hinged manner through a pivot, and the other end of the self-adjusting valve seat 72 is connected to the three-way bridge pipe 5 through an adjusting mechanism 8. The self-adjusting valve plate 73 is pivotally connected to the self-adjusting valve seat 72 through the self-adjusting valve shaft 74, the self-adjusting valve plate 73 is supported and leaned against the inclined surface of the self-adjusting valve seat 72, the inclined surface is a sealing surface, the self-adjusting valve shaft 74 can be connected to the top of the self-adjusting valve plate 73, and can also be connected to the position where the center of gravity of the self-adjusting valve plate 73 is above, the surfaces of the self-adjusting valve seat 72, the self-adjusting valve plate 73 and the self-adjusting valve shaft 74 are sprayed with a nano anti-stick coating, preferably, the thickness of the nano anti-stick coating is not more than 0.4mm; The adjusting mechanism 8 includes a bearing seat 81, a ball screw 82 and a screw nut 83. The bearing seat 81 is hingedly connected to the three-way bridge tube 5, and the ball screw 82 is connected to the bearing seat 81 through the ball screw 82. The position where the ball screw 82 passes through the bearing seat 81 is connected by a bearing, so that the ball screw 82 can rotate in the bearing seat 81. A driving wheel 85 is fixedly connected to the end of the ball screw 82 close to the bearing seat 81. The driving wheel 85 drives the ball screw 82 to rotate, which is convenient and labor-saving. The driving wheel 85 can be manually driven or automatically driven in conjunction with a motorized mechanism. The screw nut 83 is mounted on the ball screw 82, and the screw nut 83 cooperates with the nut of the ball screw 82. The ball screw 82 rotates to drive the screw nut 83 along the axis of the ball screw 82 The ball screw 82 is driven to rotate by the driving wheel 85, and the ball screw 82 is threadedly connected to the ball screw 82 to realize the movement of the ball screw 82 along the axial direction, and the installation angle of the self-adjusting valve seat 72 relative to the three-way bridge tube 5 is adjusted by the hinge connection between the bearing seat 81 and the three-way bridge tube 5, the hinge connection between the nut block 84 and the self-adjusting valve seat 72, and the hinge connection between the self-adjusting valve seat 72 and the three-way bridge tube 5, so as to adjust the pressure bearing area of ​​the vertical component of the normal force of the pressure bearing surface of the self-adjusting valve plate 73, so as to realize the adjustment of the pressure of the space container formed by the carbonization chamber 1, the raw gas outlet 2, the riser 4, the bridge tube and the water seal cover 6.

[0028] like Figure 4 As shown, a quick inspection hole 78 is processed on the pipe wall of the horizontal section of the three-way bridge pipe 5, and the quick inspection hole 78 is connected to the three-way bridge pipe 5 through a flange. By removing the quick inspection hole 78 from the three-way bridge pipe 5, the self-adjusting valve plate device 7 can be installed and maintained on the three-way bridge pipe 5.

[0029] like Figure 4 As shown, both ends of the self-adjusting valve shaft 74 penetrate to both sides and extend to the outside of the wall of the three-way bridge tube 5. Back-blowing gas is passed through the position where the self-adjusting valve shaft 74 penetrates the wall of the three-way bridge tube 5 to prevent the self-adjusting valve shaft 74 from coking. The back-blowing gas is but not limited to inert gas, such as nitrogen, or coke oven gas or other similarly soluble gases that can prevent coking at the self-adjusting valve shaft 74. A crank is installed at one end of the self-adjusting valve shaft 74 extending out of the wall of the three-way bridge tube 5. The crank is manual or automatic, and is used to manually or automatically open the self-adjusting valve plate 73 through the crank when the self-adjusting valve shaft 74 is coked and stuck, so as to ensure that the raw gas flow of the riser 4 system flows out smoothly into the gas collecting pipe system, and at the same time, the stuck self-adjusting valve shaft 74 can also restore its flexible rotation function.

[0030] Embodiment 4 like Figure 7-Figure 9As shown, a mechanical counterweight carbonization chamber 1 pressure stabilizing device comprises a carbonization chamber 1, a raw gas outlet 2, a riser pipe seat 3, a riser pipe 4, a three-way bridge pipe 5, a water seal cover 6 and a self-adjusting valve plate device 7. The raw gas outlet 2, the riser pipe seat 3, the riser pipe 4, the three-way bridge pipe 5 and the water seal cover 6 are sequentially connected to the carbonization chamber 1 from bottom to top, and are connected to each other in a flange connection manner, which is reliable and easy to disassemble and assemble. The self-adjusting valve plate device 7 adopts a rotary valve plate structure, and the self-adjusting valve plate device 7 is installed on the three-way bridge pipe 5.

[0031] like Figure 8 and Fig. 9 As shown, the self-adjusting valve plate device 7 includes a self-adjusting valve seat 72 and a self-adjusting valve plate 73. The self-adjusting valve seat 72 is connected to the interface between the horizontal section and the vertical section of the three-way bridge pipe 5. The self-adjusting valve seat 72 is vertically arranged and is a vertical plane structure in the vertical direction. The self-adjusting valve plate 73 is pivotally connected to the self-adjusting valve seat 72 through a self-adjusting valve shaft 74. The self-adjusting valve plate 73 is supported and vertically leans on the vertical plane of the self-adjusting valve seat 72. The vertical plane is a sealing surface. The self-adjusting valve shaft 74 can be connected to the top of the self-adjusting valve plate 73, and can also be connected to a position above the center of gravity of the self-adjusting valve plate 73. The surfaces of the self-adjusting valve seat 72, the self-adjusting valve plate 73 and the self-adjusting valve shaft 74 are all sprayed with a nano anti-stick coating. The thickness of the nano anti-stick coating is not more than 1 mm. Preferably, the thickness of the nano anti-stick coating is not more than 0.4 mm.

[0032] like Figure 7 As shown, a quick inspection hole 78 is processed on the pipe wall of the horizontal section of the three-way bridge pipe 5, and the quick inspection hole 78 is connected to the three-way bridge pipe 5 through a flange. By removing the quick inspection hole 78 from the three-way bridge pipe 5, the self-adjusting valve plate device 7 can be installed and maintained on the three-way bridge pipe 5.

[0033] like Figure 7 As shown, both ends of the self-adjusting valve shaft 74 penetrate to both sides and extend to the outside of the wall of the three-way bridge tube 5. Back-blowing gas is passed through the position where the self-adjusting valve shaft 74 penetrates the wall of the three-way bridge tube 5 to prevent the self-adjusting valve shaft 74 from coking. The back-blowing gas is but not limited to inert gas, such as nitrogen, or coke oven gas or other similarly soluble gases that can prevent coking at the self-adjusting valve shaft 74. A crank is installed at one end of the self-adjusting valve shaft 74 extending out of the wall of the three-way bridge tube 5. The crank is manual or automatic, and is used to manually or automatically open the self-adjusting valve plate 73 through the crank when the self-adjusting valve shaft 74 is coked and stuck, so as to ensure that the raw gas flow of the riser 4 system flows out smoothly into the gas collecting pipe system, and at the same time, the stuck self-adjusting valve shaft 74 can also restore its flexible rotation function.

[0034] Embodiment 5 like Figure 10-12As shown, a mechanical counterweight carbonization chamber 1 pressure stabilizing device comprises a carbonization chamber 1, a raw gas outlet 2, a riser pipe seat 3, a riser pipe 4, a three-way bridge pipe 5, a water seal cover 6 and a self-adjusting valve plate device 7. The raw gas outlet 2, the riser pipe seat 3, the riser pipe 4, the three-way bridge pipe 5 and the water seal cover 6 are sequentially connected to the carbonization chamber 1 from bottom to top, and are connected to each other in a flange connection, which is reliable and easy to disassemble and assemble. The self-adjusting valve plate device 7 adopts a rotary valve plate structure, and the self-adjusting valve plate device 7 is installed between the riser pipe 4 and the three-way bridge pipe 5.

[0035] like Fig.11 and Fig.12 As shown, the self-adjusting valve plate device 7 includes an upper flange 75, a lower flange 76, a self-adjusting valve seat 72 and a self-adjusting valve plate 73. The upper flange 75 is connected to the flange between the upper end of the vertical section of the three-way bridge pipe 5 and the water seal cover 6, and the lower flange 76 is connected to the flange between the lower end of the vertical section of the three-way bridge pipe 5 and the riser 4. A self-adjusting valve frame 77 is connected between the upper flange 75 and the lower flange 76. The self-adjusting valve frame 77 faces the horizontal section direction of the three-way bridge pipe 5, and the self-adjusting valve seat 72 is connected to the self-adjusting valve frame On 77, the self-adjusting valve plate 73 is pivotally connected to the self-adjusting valve seat 72 through the self-adjusting valve shaft 74. The self-adjusting valve shaft 74 can be connected to the top of the self-adjusting valve plate 73, and can also be connected to any position above the center of gravity of the self-adjusting valve plate 73. The surfaces of the upper flange 75, the lower flange 76, the self-adjusting valve seat 72, the self-adjusting valve plate 73 and the self-adjusting valve shaft 74 are all sprayed with a nano anti-stick coating, and the thickness of the nano anti-stick coating is not more than 1 mm. Preferably, the thickness of the nano anti-stick coating is not more than 0.4 mm.

[0036] like Fig.10 As shown, a quick inspection hole 78 is processed on the pipe wall of the horizontal section of the three-way bridge pipe 5, and the quick inspection hole 78 is connected to the three-way bridge pipe 5 through a flange. By removing the quick inspection hole 78 from the three-way bridge pipe 5, the self-adjusting valve plate device 7 can be installed and maintained on the three-way bridge pipe 5.

[0037] like Fig.10 As shown, both ends of the self-adjusting valve shaft 74 penetrate to both sides and extend to the outside of the wall of the three-way bridge tube 5. Back-blowing gas is passed through the position where the self-adjusting valve shaft 74 penetrates the wall of the three-way bridge tube 5 to prevent the self-adjusting valve shaft 74 from coking. The back-blowing gas is but not limited to inert gas, such as nitrogen, or coke oven gas or other similarly soluble gases that can prevent coking at the self-adjusting valve shaft 74. A crank is installed at one end of the self-adjusting valve shaft 74 extending out of the wall of the three-way bridge tube 5. The crank is manual or automatic, and is used to manually or automatically open the self-adjusting valve plate 73 through the crank when the self-adjusting valve shaft 74 is coked and stuck, so as to ensure that the raw gas flow of the riser 4 system flows out smoothly into the gas collecting pipe system, and at the same time, the stuck self-adjusting valve shaft 74 can also restore its flexible rotation function.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the patent application scope of the present invention should belong to the technical scope of the present invention.

Claims

1. A mechanical counterweight carbonization chamber pressure stabilization method, i.e., a method for achieving a dynamic constant pressure in the sealed space from the carbonization chamber (1) to the self-adjusting valve plate device (7) during the flow of raw gas distilled from the carbonization chamber (1), the method being characterized by: A method of maintaining a constant pressure between the weight of a self-adjusting valve plate (73) of a self-adjusting valve plate device (7) and a sealing surface of the self-adjusting valve plate (73), comprising: A. determining the weight of the self-adjusting valve plate device (7) and maintaining the weight of the self-adjusting valve plate device (7) constant; B. Obtaining the pressure of the space container formed between the carbonization chamber (1), the raw gas outlet (2), the riser pipe seat (3) and the self-adjusting valve plate device (7), or obtaining the constancy of the pressure of the space formed between the carbonization chamber (1), the raw gas outlet (2), the riser pipe seat (3), the riser pipe (4), the three-way bridge pipe (5), the water seal cover (6) and the self-adjusting valve plate device (7); C. Make the pressure in the space container equal to the pressure formed by the weight of the self-adjusting valve plate device (7) and the component of the normal force of its pressure-bearing surface; D. The sealing pressure-bearing surface angle of the self-adjusting valve plate device (7) is adjustable, so that the normal force of the sealing pressure-bearing surface can be adjusted, thereby making the pressure in the carbonization chamber (1) adjustable.

2. A mechanical counterweight carbonization chamber pressure stabilizing device, characterized in that: The invention comprises a carbonization chamber (1), a raw gas outlet (2), a riser pipe seat (3), a riser pipe (4), a three-way bridge pipe (5) and a water seal cover (6), wherein the raw gas outlet (2), the riser pipe seat (3), the riser pipe (4), the three-way bridge pipe (5) and the water seal cover (6) are sequentially arranged on the carbonization chamber (1), and is characterized in that it also comprises a self-adjusting valve plate device (7), wherein the self-adjusting valve plate device (7) adopts a cap-type valve plate structure or a rotary valve plate structure, and the self-adjusting valve plate device (7) is arranged between the riser pipe seat (3) and the riser pipe (4), or the self-adjusting valve plate device (7) is arranged between the riser pipe (4) and the three-way bridge pipe (5), or the self-adjusting valve plate device (7) is arranged on the three-way bridge pipe (5).

3. The mechanical counterweight carbonization chamber pressure stabilizing device according to claim 2, characterized in that: The self-adjusting valve plate device (7) comprises a vertical cylindrical valve seat (70) and a valve bonnet (71); the vertical cylindrical valve seat (70) is arranged on a flange between a riser pipe seat (3) and a riser pipe (4); the valve bonnet (71) is loosely mounted on the vertical cylindrical valve seat (70); the valve bonnet (71) comprises a bonnet top (711) and a bonnet tube (712); the length dimension of the bonnet tube (712) is smaller than the height dimension of the vertical cylindrical valve seat (70).

4. The mechanical counterweight carbonization chamber pressure stabilizing device according to claim 2, characterized in that: The self-adjusting valve plate device (7) comprises a vertical cylindrical valve seat (70) and a valve bonnet (71); the vertical cylindrical valve seat (70) is arranged on a flange between a riser pipe seat (3) and a riser pipe (4); the valve bonnet (71) is loosely mounted on the vertical cylindrical valve seat (70); the valve bonnet (71) comprises a bonnet top (711) and a bonnet barrel (712); the length dimension of the bonnet barrel (712) is greater than the height dimension of the vertical cylindrical valve seat (70).

5. The mechanical counterweight carbonization chamber pressure stabilizing device according to claim 2, characterized in that: The self-regulating valve plate device (7) comprises a self-regulating valve seat (72) and a self-regulating valve plate (73); the self-regulating valve seat (72) is arranged at the interface between the horizontal section and the vertical section of the three-way bridge pipe (5); the self-regulating valve plate (73) is pivotally connected to the self-regulating valve seat (72) via a self-regulating valve shaft (74); the self-regulating valve shaft (74) is arranged at a position above the center of gravity of the self-regulating valve plate (73).

6. The mechanical counterweight carbonization chamber pressure stabilizing device according to claim 4 or 5, characterized in that: A quick inspection hole (78) is provided on the pipe wall of the horizontal section of the three-way bridge pipe (5), and the quick inspection hole (78) is connected via a flange.

7. The mechanical counterweight carbonization chamber pressure stabilizing device according to claim 2, characterized in that: The self-regulating valve plate device (7) comprises an upper flange (75), a lower flange (76), a self-regulating valve seat (72) and a self-regulating valve plate (73); the upper flange (75) is arranged at the upper end of the vertical section of the three-way bridge pipe (5); the lower flange (76) is arranged at the lower end of the vertical section of the three-way bridge pipe (5); a self-regulating valve frame (77) is arranged between the upper flange (75) and the lower flange (76); the self-regulating valve seat (72) is arranged on the self-regulating valve frame (77); and the self-regulating valve plate (73) is pivotally connected to the self-regulating valve seat (72) via a self-regulating valve shaft (74).

8. The mechanical counterweight carbonization chamber pressure stabilizing device according to claim 5 or 7, characterized in that: Both ends of the self-adjusting valve shaft (74) penetrate toward both sides and extend to the outside of the tube wall of the three-way bridge tube (5); a crank is provided at one end of the self-adjusting valve shaft (74) located outside the tube wall of the three-way bridge tube (5); and back-blowing gas is provided at the position where the self-adjusting valve shaft (74) penetrates the tube wall of the three-way bridge tube (5) to prevent the self-adjusting valve shaft (74) from coking.

9. The mechanical counterweight carbonization chamber pressure stabilizing device according to claim 8, characterized in that: The surface of the self-adjusting valve plate device (7) is sprayed with a nano anti-stick coating.

10. The mechanical counterweight carbonization chamber pressure stabilizing device according to claim 5, characterized in that: One end of the self-regulating valve seat (72) is pivotally connected to the three-way bridge tube (5), and the other end of the self-regulating valve seat (72) is connected to the three-way bridge tube (5) via an adjusting mechanism (8). The adjusting mechanism (8) comprises a bearing seat (81), a ball screw (82) and a screw nut (83). The bearing seat (81) is hinged to the three-way bridge tube (5). The ball screw (82) passes through and is rotatably arranged on the bearing seat (81). The screw nut (83) is sleeved on the ball screw (82) and cooperates with the nut of the ball screw (82). A nut block (84) is arranged on the screw nut (83). The nut block (84) is hinged to the self-regulating valve seat (72). A driving wheel (85) is fixed to the end of the ball screw (82) close to the bearing seat (81).

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