Linear compensation device for pressure regulating valve of gas collecting pipe of coke oven

Abstract

The utility model discloses a linear compensation device for a pressure regulating valve of a gas collecting pipe of a coke oven, which belongs to the technical field of gas collecting pipes of coke ovens and comprises a first gas collecting pipe of the coke oven and a second gas collecting pipe of the coke oven communicated and connected with the first gas collecting pipe of the coke oven. A pressure sensor is installed on the outer wall of the first coke oven gas collecting pipe, the detection end of the pressure sensor extends to an inner cavity of the first coke oven gas collecting pipe, a controller is installed on one side of the pressure sensor, and a pressure regulating valve body is installed between the first coke oven gas collecting pipe and the second coke oven gas collecting pipe. According to the pressure regulating valve, the pressure of a gas collecting pipe can be more accurately controlled through linear compensation, fluctuation is reduced, the stable pressure is beneficial to improving the production efficiency and the product quality of a coke oven, the pressure fluctuation is reduced, the abrasion of equipment is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of coke oven gas collecting pipes, and more specifically to a linear compensation device for a pressure regulating valve of a coke oven gas collecting pipe. Background Art

[0002] A coke oven is a furnace used to refine coke. Modern coke ovens are composed of a carbonization chamber, a combustion chamber, a regenerator, a ramp area, a furnace roof, a foundation, a flue, etc. The coal in the carbonization chamber is heated in an airtight condition to become coke. The lifespan of a coke oven is generally about 25 years, and can reach more than 30 years if it is well operated and maintained. Modern coke oven types can be divided in many ways. The main differences between coke ovens with different structures are the following aspects: the structure of the combustion chamber fire channel, the adaptability to the type of heating gas, the heating gas supply method, the layout of the regenerator, and the measures to improve the uniformity of high-speed heating.

[0003] Coke oven gas collecting pipe: During the coke oven production process, coal is heated to a high temperature to produce coke and by-product coal gas. The gas collecting pipe is used to collect these coal gases. Pressure regulating valve: used to adjust the pressure in the gas collecting pipe to ensure the stable operation of the system. Principle of linear compensation: nonlinear problem; in actual operation, the relationship between the opening of the regulating valve and the pressure of the gas collecting pipe is usually nonlinear. This means that a small change in the regulating valve may cause a large change in pressure, and vice versa. Linear compensation: In order to overcome this nonlinear problem, the linear compensation device adjusts the opening of the regulating valve through an algorithm so that the change in the valve opening is linearly related to the change in the gas collecting pipe pressure. This can control the pressure more accurately and avoid pressure fluctuations. Therefore, we propose a linear compensation device for the coke oven gas collecting pipe pressure regulating valve to solve the above-mentioned problems. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a linear compensation device for a coke oven gas collecting pipe pressure regulating valve, which can more accurately control the gas collecting pipe pressure and reduce fluctuations through linear compensation. Stable pressure helps to improve the efficiency of coke oven production and product quality. Reducing pressure fluctuations also helps to reduce equipment wear and extend its service life.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A linear compensation device for a pressure regulating valve of a coke oven gas collecting pipe comprises a first coke oven gas collecting pipe and a second coke oven gas collecting pipe conductively connected to the first coke oven gas collecting pipe, wherein a pressure sensor is installed on an outer wall of the first coke oven gas collecting pipe, and a detection end of the pressure sensor extends to an inner cavity of the first coke oven gas collecting pipe;

[0009] A controller is installed on one side of the pressure sensor;

[0010] A pressure regulating valve body is installed between the first coke oven gas collecting pipe and the second coke oven gas collecting pipe, a gate plate is installed on the inner side of the pressure regulating valve body, a valve seat is fixedly connected to the outer wall of the pressure regulating valve body, and a valve stem connected to the gate plate is rotatably connected to the valve seat;

[0011] An actuator is installed at a position on the outside of the pressure regulating valve body corresponding to the valve seat;

[0012] The actuator comprises a support frame welded to the outer wall of the pressure regulating valve body, and a driving motor installed on the top of the support frame and having a power output end transmission-connected to the valve stem.

[0013] Furthermore, the output end of the pressure sensor is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the input end of the drive motor.

[0014] Furthermore, a sealing rubber ring is installed at the position where the valve stem and the valve seat are combined.

[0015] Furthermore, the power output end of the driving motor passes through the top of the supporting frame, and a bearing is installed at the portion where the supporting frame and the power output end of the driving motor are combined.

[0016] Furthermore, a coupling is installed between the power output end of the drive motor and the valve stem.

[0017] Furthermore, the first coke oven gas collecting pipe and the second coke oven gas collecting pipe are connected to the pressure regulating valve body through flanges.

[0018] Furthermore, a bracket is installed between the controller 4 and the first coke oven gas collecting pipe 1 .

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] 1. Precise control: Through linear compensation, the gas collecting pipe pressure can be controlled more accurately and fluctuations can be reduced.

[0022] 2. Improve efficiency: Stable pressure helps to improve the efficiency and product quality of coke oven production.

[0023] 3. Extend equipment life: Reducing pressure fluctuations also helps reduce equipment wear and extend service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the pressure regulating valve body of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the actuator of the utility model;

[0027] Figure 4 It is an enlarged schematic diagram of part A of the present invention.

[0028] Description of the numbers in the figure:

[0029] 1. The first coke oven gas collecting pipe; 2. The second coke oven gas collecting pipe; 3. The pressure sensor; 4. The controller; 5. The pressure regulating valve body; 6. The gate; 7. The valve seat; 8. The valve stem; 9. The support frame; 10. The driving motor; 11. The coupling. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0031] Example:

[0032] See also Figure 1-4 A linear compensation device for a coke oven gas collecting pipe pressure regulating valve comprises a first coke oven gas collecting pipe 1 and a second coke oven gas collecting pipe 2 which is conductively connected to the first coke oven gas collecting pipe 1, a pressure sensor 3 is installed on the outer wall of the first coke oven gas collecting pipe 1, and a detection end of the pressure sensor 3 extends to the inner cavity of the first coke oven gas collecting pipe 1;

[0033] A controller 4 is installed on one side of the pressure sensor 3;

[0034] A pressure regulating valve body 5 is installed between the first coke oven gas collecting pipe 1 and the second coke oven gas collecting pipe 2, a gate plate 6 is installed on the inner side of the pressure regulating valve body 5, a valve seat 7 is fixedly connected to the outer wall of the pressure regulating valve body 5, and a valve stem 8 connected to the gate plate 6 is rotatably connected to the valve seat 7;

[0035] An actuator is installed on the outer side of the pressure regulating valve body 5 at a position corresponding to the valve seat 7;

[0036] The actuator includes a support frame 9 welded to the outer wall of the pressure regulating valve body 5, and a driving motor 10 installed on the top of the support frame 9 and having a power output end transmission-connected to the valve stem 8;

[0037] It should be noted that the linear compensation device for the coke oven gas collecting pipe pressure regulating valve comprises the following steps when in use:

[0038] 1. Data collection: The pressure sensor 3 monitors the pressure in the first coke oven gas collecting pipe 1 and the second coke oven gas collecting pipe 2 in real time, and transmits the data to the controller 4;

[0039] 2. Data processing: The controller 4 receives the pressure data, and calculates the required opening adjustment amount of the pressure regulating valve body 5 in combination with the preset target pressure and compensation algorithm;

[0040] 3. Execution adjustment: The actuator drives the valve stem 8 to rotate and adjust the opening of the gate plate 6 in coordination with the valve seat 7 through the drive motor 10 according to the instruction of the controller 4, so that the actual pressure gradually approaches the target pressure;

[0041] 4. Feedback loop: The system continuously cycles the above process to ensure that the pressure in the first coke oven gas collecting pipe 1 and the second coke oven gas collecting pipe 2 remains stable.

[0042] like Figure 1 As shown, the output end of the pressure sensor 3 is electrically connected to the input end of the controller 4, and the output end of the controller 4 is electrically connected to the input end of the drive motor 10;

[0043] It should be noted that the pressure sensor 3 monitors the pressure in the first coke oven gas collecting pipe 1 and the second coke oven gas collecting pipe 2 in real time, and transmits the data to the controller 4. The controller 4 receives the pressure data, and calculates the required valve opening adjustment amount in combination with the preset target pressure and compensation algorithm. The actuator drives the valve stem 8 to rotate and adjust the opening of the gate plate 6 through the drive motor 10 to cooperate with the valve seat 7 according to the instruction of the controller 4, so that the actual pressure gradually approaches the target pressure, and the controller 4 is used to set a set of appropriate forward and reverse programs for the power output end of the drive motor 10;

[0044] The model of the pressure sensor 3 may be DP5641, and the model of the controller 4 may be TC5511.

[0045] like Figure 4 As shown, a sealing rubber ring is installed at the joint of the valve stem 8 and the valve seat 7;

[0046] It should be noted that a sealing rubber ring is provided to fill the gap between the valve stem 8 and the valve seat 7 to prevent gas leakage.

[0047] like Figure 4 As shown, the power output end of the drive motor 10 passes through the top of the support frame 9, and a bearing is installed at the portion where the support frame 9 and the power output end of the drive motor 10 are combined, and a coupling 11 is installed between the power output end of the drive motor 10 and the valve stem 8;

[0048] It should be noted that while ensuring the rotation accuracy of the power output shaft of the drive motor 10 , the power output by the drive motor 10 can be normally transmitted to the valve stem 8 .

[0049] like Figure 1 As shown, the first coke oven gas collecting pipe 1 and the second coke oven gas collecting pipe 2 are connected to the pressure regulating valve body 5 through flanges;

[0050] It should be noted that the connection between the first coke oven gas collecting pipe 1 and the second coke oven gas collecting pipe 2 and the pressure regulating valve body 5 is facilitated.

[0051] like Figure 1 As shown, a bracket is installed between the controller 4 and the first coke oven gas collecting pipe 1;

[0052] It should be noted that the controller 4 is prevented from being overheated during operation to affect its normal operation.

[0053] When in use: 1. Data collection: The pressure sensor 3 monitors the pressure in the first coke oven gas collecting pipe 1 and the second coke oven gas collecting pipe 2 in real time, and transmits the data to the controller 4;

[0054] 2. Data processing: The controller 4 receives the pressure data, and calculates the required opening adjustment amount of the pressure regulating valve body 5 in combination with the preset target pressure and compensation algorithm;

[0055] 3. Execution adjustment: The actuator drives the valve stem 8 to rotate and adjust the opening of the gate plate 6 in coordination with the valve seat 7 through the drive motor 10 according to the instruction of the controller 4, so that the actual pressure gradually approaches the target pressure;

[0056] 4. Feedback loop: The system continuously cycles the above process to ensure that the pressure in the first coke oven gas collecting pipe 1 and the second coke oven gas collecting pipe 2 remains stable.

[0057] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A linear compensation device for a coke oven gas collecting pipe pressure regulating valve, comprising a first coke oven gas collecting pipe (1) and a second coke oven gas collecting pipe (2) conductively connected to the first coke oven gas collecting pipe (1), characterized in that: A pressure sensor (3) is installed on the outer wall of the first coke oven gas collecting pipe (1), and a detection end of the pressure sensor (3) extends to the inner cavity of the first coke oven gas collecting pipe (1); A controller (4) is installed on one side of the pressure sensor (3); A pressure regulating valve body (5) is installed between the first coke oven gas collecting pipe (1) and the second coke oven gas collecting pipe (2), a gate plate (6) is installed on the inner side of the pressure regulating valve body (5), a valve seat (7) is fixedly connected to the outer wall of the pressure regulating valve body (5), and a valve stem (8) connected to the gate plate (6) is rotatably connected to the valve seat (7); An actuator is installed at a position on the outside of the pressure regulating valve body (5) corresponding to the valve seat (7); The actuator comprises a support frame (9) welded to the outer wall of the pressure regulating valve body (5), and a driving motor (10) mounted on the top of the support frame (9) and having a power output end drivingly connected to the valve stem (8).

2. A linear compensation device for a coke oven gas collecting pipe pressure regulating valve according to claim 1, characterized in that: The output end of the pressure sensor (3) is electrically connected to the input end of the controller (4), and the output end of the controller (4) is electrically connected to the input end of the drive motor (10).

3. A linear compensation device for a coke oven gas collecting pipe pressure regulating valve according to claim 1, characterized in that: A sealing rubber ring is installed at the position where the valve stem (8) and the valve seat (7) are combined.

4. A linear compensation device for a coke oven gas collecting pipe pressure regulating valve according to claim 1, characterized in that: The power output end of the driving motor (10) passes through the top of the support frame (9), and a bearing is installed at the portion where the support frame (9) and the power output end of the driving motor (10) are combined.

5. The linear compensation device for a coke oven gas collecting pipe pressure regulating valve according to claim 1, characterized in that: A coupling (11) is installed between the power output end of the driving motor (10) and the valve stem (8).

6. A linear compensation device for a coke oven gas collecting pipe pressure regulating valve according to claim 1, characterized in that: The first coke oven gas collecting pipe (1) and the second coke oven gas collecting pipe (2) are connected to the pressure regulating valve body (5) via flanges.

7. A linear compensation device for a coke oven gas collecting pipe pressure regulating valve according to claim 1, characterized in that: A bracket is installed between the controller (4) and the first coke oven gas collecting pipe (1).

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