Temperature adjusting device for mixed gas heating single-hole combustion chamber

Abstract

The utility model relates to the technical field of coke oven heating, in particular to a mixed gas heating single-hole combustion chamber temperature adjusting device, which is characterized in that the input end of each heating gas unit and the input end of each adjusting unit are respectively connected with a mixed heating gas main pipe, and the output end of each heating gas unit is connected with a corresponding waste gas shutter; the first output end and the second output end of each adjusting unit are connected with the output ends of the adjacent coal gas heating units respectively, and the adjusting units are arranged on the corresponding adjusting coal gas pipelines. The utility model has the advantages that the plug valve A and the plug valve B can be automatically switched in adjacent switching periods by utilizing the switching transmission brace of the existing switch without additionally arranging a transmission device, so that the cost is saved; the plug valves A and B and the exchange plug cocks A and B are located at the same horizontal height, the crank lengths of the cranks A and B and the exchange plug cocks A and B are the same, it is guaranteed that the plug valves A and B and the exchange plug cocks A and B achieve full opening and full closing at the same time, the structure is simple, and implementation is easy.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coke oven heating technical field especially relates to a mixed coal gas heating single hole combustion chamber temperature regulating device. BACKGROUND

[0002] Coke oven combustion chamber temperature control often needs operating personnel to manually adjust the opening of the cock in the coke oven basement, or to change the size of the orifice plate in the orifice plate box to change the coke oven heating gas flow, due to the limited size of the orifice plate, the adjustment precision is poor, and the number of coke oven combustion chambers is large, experienced operating personnel need to operate frequently, the coke oven basement is a dangerous area, and manual operation has safety hazards.

[0003] In the prior art, the patent name is "a coke oven single hole combustion chamber temperature regulating device" with the publication number CN221051793U, which comprises a gas horizontal pipe, an exchange cock, a branch pipe adding and subtracting cock, an orifice plate box and a coke oven gas main pipe, the gas horizontal pipe is connected with the exchange cock through a pipeline in the vertical direction, the exchange cock is connected with the branch pipe adding and subtracting cock through a pipeline, and the orifice plate box is arranged on the pipeline between the exchange cock and the branch pipe adding and subtracting cock, the branch pipe adding and subtracting cock is connected with the coke oven gas main pipe through a pipeline, and the device is characterized by further comprising an adjusting valve, a manual valve, an adjusting valve cylinder, an adjusting controller, a gas source pipe, a signal cable and a cable bridge, the adjusting valve is arranged on the pipeline between the exchange cock and the orifice plate box, the inlet end of the adjusting valve is connected with the manual valve, the inlet end of the manual valve is connected with the adjusting valve cylinder, the gas inlet end of the adjusting valve cylinder is connected with the gas source main pipe through the gas source pipe, the electric signal line of the adjusting valve cylinder is connected with the IO port of the adjusting controller, and the signal cable of the adjusting controller is connected to the control system through the cable bridge.

[0004] 1. The size of the adjusting valve is large, the adjustment precision can only realize coarse adjustment, the combustion chamber temperature cannot be accurately adjusted, and the adjustment effect is not significant;

[0005] 2. Due to the large number of coke oven combustion chambers, taking a 65-hole carbonization chamber 6.25m jolted coke oven as an example, 132 DN100 adjusting valves are needed, whether it is investment cost, maintenance workload or later energy consumption is very high, which brings great economic pressure to the factory owner. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a mixed coal gas heating single hole combustion chamber temperature regulating device, which does not need operating personnel to manually operate in the coke oven basement, has simple structure, is convenient to operate and can greatly reduce the investment cost.

[0007] In order to achieve the above object, the utility model realizes the following technical scheme:

[0008] The temperature adjusting device for single-hole combustion chamber of mixed gas heating comprises heating gas units and adjusting units, the input end of each heating gas unit and the input end of each adjusting unit are connected with the main pipe of mixed heating gas respectively, the output end of each heating gas unit is connected with the corresponding waste gas on-off device, the output end one and the output end two of each adjusting unit are connected with the output end of the adjacent heating gas unit respectively, and the adjusting unit is arranged on the corresponding adjusting gas pipeline.

[0009] The adjusting gas pipeline comprises branch pipe one, branch pipe two and branch pipe three, the output end of the branch pipe one is connected with the input end of the branch pipe two and the branch pipe three respectively, the input end of the branch pipe one is connected with the main pipe of mixed heating gas, and the output end of the branch pipe two and the branch pipe three is connected with the output end of the adjacent heating gas unit respectively.

[0010] The adjusting valve is arranged on the branch pipe one, the plug valve A is arranged on the branch pipe two, and the plug valve B is arranged on the branch pipe three.

[0011] The adjacent heating gas unit comprises heating gas pipeline one and heating gas pipeline two, the exchange plug A and the crank A are sequentially arranged on the heating gas pipeline one, the exchange plug B and the crank B are sequentially arranged on the heating gas pipeline two, the crank A is fixedly connected with the valve shaft of the plug valve A through the connecting rod A, the crank A is connected with the exchange transmission lower stay through the connecting rod A, the crank B is fixedly connected with the valve shaft of the plug valve B through the connecting rod B, and the crank B is connected with the exchange transmission upper stay through the connecting rod B.

[0012] The plug valve A, the plug valve B, the exchange plug A and the exchange plug B are located at the same horizontal height.

[0013] The lengths of the crank A, the crank B, the crank of the exchange plug A and the crank of the exchange plug B are same.

[0014] The rod head of the connecting rod A and the exchange transmission lower stay are parallel to each other and fixedly connected, and the included angle between the rod head of the connecting rod A and the rod body of the connecting rod A is an obtuse angle.

[0015] The rod head of the connecting rod B and the exchange transmission upper stay are parallel to each other and fixedly connected, and the included angle between the rod head of the connecting rod A and the rod body of the connecting rod A is zero angle.

[0016] The adjusting plug A and the orifice box A are arranged on the heating gas pipeline one, the adjusting plug B and the orifice box B are arranged on the heating gas pipeline two, the adjusting plug A, the orifice box A and the exchange plug A are connected from bottom to top, the adjusting plug B, the orifice box B and the exchange plug B are connected from bottom to top, and the input end of the adjusting plug A and the adjusting plug B is connected with the main pipe of mixed heating gas respectively.

[0017] Compared with the prior art, the temperature adjusting device for single-hole combustion chamber of mixed gas heating has the following beneficial effects:

[0018] 1. A switching valve A and a crank A are sequentially installed on the first heating gas pipeline, and a switching valve B and a crank B are sequentially installed on the second heating gas pipeline. The valve shaft of the crank A and the switching valve A are fixedly connected by a connecting rod A, and the crank A is connected to the lower pull bar of the switching transmission through the connecting rod A. The valve shaft of the switching valve B and the switching valve B are fixed by the connecting rod B, and the crank B is connected to the upper pull bar of the switching transmission through the connecting rod B. This allows the switching valves A and B to automatically switch between adjacent switching cycles using the existing switching transmission pull bar of the exchanger, improving the temperature regulation effect of the combustion chamber without the need for additional transmission devices, thus saving costs.

[0019] 2. Plug valve A, plug valve B, exchange plug A, and exchange plug B are located at the same horizontal height. Crank A, crank B, the crank of exchange plug A, and the crank of exchange plug B have the same length, ensuring that plug valve A, plug valve B, and exchange plug A, exchange plug B can be fully opened and fully closed simultaneously. The structure is simple and easy to implement.

[0020] 3. The head of connecting rod A is parallel to the lower pull bar of the exchange drive, and the head of connecting rod A is fixedly connected to the lower pull bar of the exchange drive. The angle between the head of connecting rod A and the body of connecting rod A is an obtuse angle, ensuring that the plug valve A can open and close with the lower transmission pull bar. The head of connecting rod B is parallel to the upper pull bar of the exchange drive, and the head of connecting rod B is fixedly connected to the lower pull bar of the exchange drive. The angle between the head of connecting rod B and the body of connecting rod B is zero angle, ensuring that the plug valve B can open and close with the upper transmission pull bar. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a single-hole combustion chamber temperature control device for mixed gas.

[0022] Figure 2 This is a schematic diagram showing the connection between the cock and the exchange drive cable in direction aa.

[0023] Figure 3 This is a diagram showing the configuration of the temperature control device when the number of heat storage chambers is even.

[0024] Figure 4 This is a diagram showing the configuration of the temperature control device when the number of heat storage chambers is odd.

[0025] Figure 5 This is the flow chart for combustion chamber temperature control when plug valve A is open and B is closed.

[0026] Figure 6 This is the combustion chamber temperature control flowchart when stopcock valve A is closed and valve B is open.

[0027] In the figure: 1 - stop valve A 2 - regulating valve A 3 - stop valve B 4 - cock A 5 - crank A 6 - connecting rod A 7 - cock B 8 - crank B 9 - connecting rod B 10 - exchange cock A 11 - exchange cock B 12 - upper exchange transmission stay 13 - lower exchange transmission stay 14 - orifice plate box 15 - regulating cock. DETAILED DESCRIPTION

[0028] The utility model will be described in detail below in combination with the drawings of the specification, but it should be pointed out that the implementation of the utility model is not limited to the following embodiments.

[0029] The following examples are implemented on the premise of the technical scheme of the utility model, and detailed implementation modes and specific operation processes are given, but the protection scope of the utility model is not limited to the following examples. The methods used in the following examples are all conventional methods unless otherwise specified.

[0030] Example 1

[0031] The mixed gas heating single-hole combustion chamber temperature regulating device is shown in Figure 1 The regulating device comprises stop valve A1, regulating valve B2, stop valve C3, cock valve A4, crank A5, connecting rod A6, cock valve B7, crank B8, connecting rod B9, the inlet of stop valve A1 is connected with the main pipe of mixed heating gas through a pipeline, the outlet of stop valve A1 is connected with the inlet of regulating valve 2 through a pipeline, the outlet of regulating valve 2 is connected with stop valve B3 through a pipeline, stop valve B3 is connected with the inlets of cock valve A4 and cock valve B7 through pipelines respectively; the outlet of cock valve A4 is connected with the outlet of exchange cock A10 through a pipeline, and the outlet of cock valve B4 is connected with the outlet of exchange cock B11 through a pipeline.

[0032] See Figure 2, the valve shaft of the cock valve A4 is connected with the crank A5, the crank A5 is connected with the exchange transmission lower stay 13 through the connecting rod A6; the valve shaft of the cock valve B7 is connected with the crank B8, the crank B8 is connected with the exchange transmission upper stay 12 through the connecting rod B9, the cock valve A4, the cock valve B7, the exchange cock A10 and the exchange cock B11 are installed at the same horizontal height, the crank A5 and the crank B8 have the same length with the cranks of the exchange cock A10 and the exchange cock B11, and the cranks are completely parallel when the installation is completed; the rod head of the connecting rod (6) has a certain height difference with the rod body, the rod head is connected with the exchange transmission lower stay 13 through bolts, and the rod head is parallel with the exchange transmission lower stay 13 when the connection is completed; the rod head of the connecting rod (9) is in a straight line with the rod body, and is connected with the exchange transmission upper stay 12 through bolts, and the rod head is parallel with the exchange transmission upper stay 12 when the connection is completed; in the initial position, one of the cock valve A4 and the cock B7 is fully opened, and the other is fully closed, the cock valve A4 and the exchange cock A10 always keep the same opening and closing state, and the cock valve B4 and the exchange cock B11 keep the same opening and closing state.

[0033] Working principle:

[0034] See Figure 1 Each gas heating system is composed of the regulating cock (15), the orifice plate box (14), the exchange cock A10 or the exchange cock B11 and the heating gas pipeline, adjacent gas heating systems are provided with different exchange cokes A10 or exchange cokes B11, and the opening and closing directions of the two are opposite, the exchange cock A10 and the exchange cock B11 are alternately opened and closed in different exchange periods; when the exchange cock is opened, the heating gas pipeline at the position is conducted to pass through the waste gas on-off device, the regenerator and enters into the combustion chamber; the temperature adjusting device is drawn from the heating gas main pipeline, the regulating valve 2 is connected with the left and right gas heating systems in parallel through the cock valve A (4) and the cock B (7), when the exchange cock A10 is opened, the cock valve A4 is also opened at the same time, at this time, the regulating valve 2 adjusts the heating gas system where the exchange cock A10 is located; when the next exchange period, the exchange transmission lower stay 13 drives the exchange cock A10 at the same time, the cock valve A4 is closed, at this time, the exchange transmission upper stay 12 drives the exchange cock B11, the cock valve (7) is opened, and the regulating valve (2) adjusts the heating gas system where the exchange cock B11 is located.

[0035] The configuration of the adjusting device on both sides of the coke oven machine is related to the number of the coke oven regenerators; if the regenerators are 2N, N sets of adjusting devices are configured, the 1# adjusting device is connected in parallel between the 1# and 2# regenerators gas heating systems, the 2# adjusting device is connected in parallel between the 3# and 4# regenerators gas heating systems, and so on, the N# adjusting device is connected in parallel between the 2N-1# and 2N# regenerators gas heating systems; if the regenerators are 2N+1, the first 2N regenerators gas heating systems are consistent with the above configuration, the 2N+1# regenerator gas heating system is connected in parallel with one adjusting device, the adjusting device is not provided with a stop valve, and is directly connected in parallel with the adjusting plug and the orifice plate box; see Figure 3 , the temperature adjusting device configuration diagram of the single side heating pipeline of the 60-hole coke oven is given, the regenerators are 62 (even number), corresponding to 62 groups of gas heating systems, and 31 groups of temperature adjusting devices need to be configured for the single side heating system; every 2 groups of gas heating systems are provided with one set of temperature adjusting device, that is, the 1# and 2# gas heating systems correspond to the 1# temperature adjusting device, the 3# and 4# gas heating systems correspond to the 2# temperature adjusting device, and the 61# and 62# gas heating systems are configured with the 31# temperature adjusting device; see Figure 4 , the temperature adjusting device configuration diagram of the single side heating pipeline of the 65-hole coke oven is given, the regenerators are 67 (odd number), corresponding to 67 groups of gas heating systems, and 34 groups of temperature adjusting devices need to be configured for the single side heating system, wherein the 1# and 2# gas heating systems correspond to the 1# temperature adjusting device, the 3# and 4# gas heating systems correspond to the 2# temperature adjusting device, the 65# and 66# gas heating systems are configured with the 33# temperature adjusting device, and at this time, the 67# gas heating system is independently configured with the 34# temperature adjusting device, which is only composed of the stop valve A1, the adjusting valve B2, and the stop valve C3, and the adjusting valve B2 is connected in parallel with the adjusting plug (15) and the orifice plate box (14).

[0036] see Figure 5 , a mixed gas heating single-hole combustion chamber temperature adjusting working process, the contents are as follows:

[0037] In the current exchange period, the exchange plug A10 is turned on, at this time, the plug A (4) is turned on, the adjusting valve 2 will control the temperature of the 2n-1# gas regenerator, and the temperature of the gas regenerator will affect the temperature of the adjacent two combustion chambers (2n-2#, 2n-1#), therefore, in the current exchange period, the control output of the adjusting valve is u1(t), which is related to the combustion chamber temperatures of 2n-2# and 2n-1#, and the formula is as follows:

[0038]

[0039] In the formula 1, u1(t) is the control opening of the n-th regulating valve when the 2n-1 gas heating system is working, u2(t) is the control opening of the n-th regulating valve when the 2n gas heating system is working, the outputs of u1(t) and u2(t) are automatically switched in each exchange period; Kp is the proportional gain, Ki is the integral gain, and Kd is the differential gain; E(2n-1)(t) is the deviation of the temperature of the 2n-1 combustion chamber from the target temperature; E(2n-2)(t) is the deviation of the temperature of the 2n-2 combustion chamber from the target temperature; E(2n)(t) is the deviation of the temperature of the 2n combustion chamber from the target temperature; k1 is the weight of the temperature of the 2n-1 combustion chamber; k2 is the weight of the temperature of the 2n-2 combustion chamber; and k3 is the weight of the temperature of the 2n combustion chamber.

[0040] See Figure 6 In the next exchange period, the exchange cock A10 is closed, at this time, the cock A(4) is closed, the exchange cock B11 is opened, at this time, the cock B(7) is opened, the regulating valve 2 will control the temperature of the 2n gas regenerator, and the temperature of the gas regenerator will affect the temperatures of the adjacent two combustion chambers (2n-1, 2n), therefore, in the current exchange period, the control output of the regulating valve is switched to the opening of u2(t), u2(t) is related to the temperatures of the 2n-1 and 2n combustion chambers, and the formula is as follows:

[0041]

[0042] In the formula 2, the weights k1, k2 and k3 are adjusted according to the measured temperature at the beginning.

[0043] The utility model discloses a heating gas pipeline one is equipped with exchange plug A, crank A in proper order, and heating gas pipeline two is equipped with exchange plug B, crank B in proper order, crank A is fixedly connected with the valve shaft of plug valve A through connecting rod A, and crank A is connected with exchange drive lower pull strip through connecting rod A, crank B is connected with the valve shaft of plug valve B through connecting rod B, and crank B is connected with exchange drive upper pull strip through connecting rod B, so that plug valve A, plug valve B can realize automatic switching in adjacent exchange period with exchange drive pull strip of existing exchange, need not increase transmission device additionally, save the cost, plug valve A, plug valve B, exchange plug A, exchange plug B are located at same horizontal height, and the length of crank A, crank B, the crank of exchange plug A, the crank of exchange plug B is same, guarantees that plug valve A, plug valve B realize full open, full close with exchange plug A, exchange plug B simultaneously, simple structure, easily realize, the head of connecting rod A and exchange drive lower pull strip are parallel, and the head of connecting rod A and exchange drive lower pull strip are fixedly connected, and the included angle between the head of connecting rod A and the shaft of connecting rod A is obtuse angle, guarantees that plug valve A can realize switch action with lower drive pull strip, the head of connecting rod B and exchange drive upper pull strip are parallel, and the head of connecting rod B and exchange drive lower pull strip are fixedly connected, and the included angle between the head of connecting rod B and the shaft of connecting rod B is zero angle, guarantees that plug valve B can realize switch action with upper drive pull strip.

Claims

1. A mixed gas heating single-hole combustion chamber temperature adjusting device, characterized in that, It comprises heating gas units and adjusting units, the input end of each heating gas unit and the input end of each adjusting unit are connected with the mixed heating gas main pipe respectively, the output end of each heating gas unit is connected with the corresponding waste gas on-off valve, the output end one and the output end two of each adjusting unit are connected with the output end of the adjacent heating gas unit respectively, and the adjusting unit is arranged on the corresponding adjusting gas pipe.

2. A mixed gas heating single-hole combustion chamber temperature regulating device according to claim 1, characterized in that, The adjusting gas pipe comprises branch pipe one, branch pipe two and branch pipe three, the output end of the branch pipe one is connected with the input end of the branch pipe two and the branch pipe three respectively, the input end of the branch pipe one is connected with the mixed heating gas main pipe, and the output end of the branch pipe two and the branch pipe three is connected with the output end of the adjacent heating gas unit respectively. The branch pipe one is provided with an adjusting valve, the branch pipe two is provided with plug valve A, and the branch pipe three is provided with plug valve B.

3. A mixed gas heating single-hole combustion chamber temperature regulating device according to claim 2, characterized in that, The adjacent heating gas unit comprises heating gas pipe one and heating gas pipe two, the heating gas pipe one is sequentially provided with exchange plug A and crank A, and the heating gas pipe two is sequentially provided with exchange plug B and crank B; the crank A is fixedly connected with the valve shaft of plug valve A through connecting rod A, and the crank A is connected with the exchange transmission lower stay through connecting rod A; the crank B is fixedly connected with the valve shaft of plug valve B through connecting rod B, and the crank B is connected with the exchange transmission upper stay through connecting rod B. The plug valve A, the plug valve B, the exchange plug A and the exchange plug B are located at the same horizontal height. The crank A, the crank B, the crank of the exchange plug A and the crank of the exchange plug B have the same length.

4. A mixed gas heating single-hole combustion chamber temperature regulating device according to claim 3, characterized in that, The rod head of the connecting rod A and the exchange transmission lower stay are parallel to each other, and the rod head of the connecting rod A and the exchange transmission lower stay are fixedly connected; the included angle between the rod head of the connecting rod A and the rod body of the connecting rod A is an obtuse angle.

5. A mixed gas heating single-hole combustion chamber temperature regulating device according to claim 3, characterized in that, The rod head of the connecting rod B and the exchange transmission upper stay are parallel to each other, and the rod head of the connecting rod A and the exchange transmission lower stay are fixedly connected; the included angle between the rod head of the connecting rod A and the rod body of the connecting rod A is zero angle.

6. A mixed gas heating single-hole combustion chamber temperature regulating device according to claim 3, characterized in that, The heating gas pipe one is provided with adjusting plug A and orifice box A, and the heating gas pipe two is provided with adjusting plug B and orifice box B; the adjusting plug A, the orifice box A, the exchange plug A are connected from bottom to top, the adjusting plug B, the orifice box B and the exchange plug B are connected from bottom to top, and the input end of the adjusting plug A and the adjusting plug B is connected with the mixed heating gas main pipe.

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