Coke oven gas heating single-hole combustion chamber temperature adjusting system

Abstract

The utility model relates to the technical field of coke oven heating, in particular to a coke oven gas heating single-hole combustion chamber temperature adjusting system which comprises adjusting units, one end of each adjusting unit is connected with a heating gas main pipe, and the other end of each adjusting unit is connected with a corresponding combustion chamber. The utility model has the advantages that the regulating unit is connected with the combustion chamber gas heating pipeline in parallel, so that the regulating valves are additionally arranged on the two sides of the pore plate box while the original function of the pore plate box is reserved, and the temperature regulating effect is improved; the function of an original pore plate box is reserved, when the opening of the adjusting valve is too large or too small and cannot be adjusted, an operator can change the opening of the adjusting valve by changing the pore plate in the pore plate box, and operation is easy and easy to achieve; the number of the regulating valves of the regulating unit of each coke oven is large, and the regulating valves are arranged on the small-size pipeline connected with the gas main pipe in parallel, so that the caliber of each regulating valve is greatly reduced; the size of the regulating valve is reduced, so that the gas consumption of each regulating valve is reduced, and the energy consumption is greatly reduced.

Description

TECHNICAL FIELD

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

[0002] The traditional coke oven heating branch pipe adjusting design is constituted by adjusting plug, exchange plug, orifice plate box and heating gas branch pipe, the staff controls the coke oven heating gas flow by changing the orifice plate size in the orifice plate box, due to the limited orifice plate size, the adjusting precision is poor, and the coke oven combustion chamber quantity is much, and the experienced operator needs to operate frequently, and the coke oven basement belongs to the dangerous area, and the manual operation has the security risk. Therefore, a variety of heating gas automatic adjusting technologies are born in recent years, the two gas branch pipe adjusting plugs of each combustion chamber are connected on a executing mechanism through connecting rod, the gas flow is adjusted through adjusting plug, the disadvantage is that the flow characteristics of adjusting plug are not good, and adjusting plug is not easy to move frequently, and is easy to be damaged, and the switch valve is increased between adjusting plug box and orifice plate box, the total amount of heating gas is controlled through pulse time, due to the fact that the switch valve is not easy to move frequently, therefore, the adjusting time is lagged, and the temperature regulating effect is poor. The commonly used method is to directly add a regulating valve between the adjusting plug box and the exchange plug, but due to the fact that the size of the regulating valve is large, therefore, the orifice plate box must select the large size orifice plate, otherwise the adjusting range of the regulating valve will be very small, thereby losing the adjusting effect, which means that the orifice plate box cannot be used together with the regulating valve, even if the orifice plate box is cancelled or the large size orifice plate is replaced, the combustion chamber temperature regulating effect is not good. That is to say, the regulating valve only replaces the orifice plate box to realize the rough adjusting effect, and the site operator is often more willing to be familiar with the use of the orifice plate box, after all, the orifice plate box is set up for decades of production experience, and finally the regulating valve becomes a "decoration". SUMMARY

[0003] The utility model discloses a coke oven gas heating single hole combustion chamber temperature regulating system, which retains the original function of the orifice plate box and increases regulating valves on both sides of the orifice plate box, thereby improving the temperature regulating effect of the single hole combustion chamber, saving cost, reducing energy consumption, reducing maintenance difficulty, improving adjusting efficiency and quality, and ensuring the safe and stable operation of the adjusting system.

[0004] To achieve the above-mentioned purpose, the utility model discloses the following technical scheme:

[0005] A coke oven gas heating single hole combustion chamber temperature regulating system, comprising adjusting units, one end of each adjusting unit is connected with a heating gas main pipe, and the other end of each adjusting unit is connected with a corresponding combustion chamber.

[0006] The adjusting unit comprises a combustion chamber heating gas branch pipe one and a combustion chamber heating gas branch pipe two, the combustion chamber heating gas branch pipe one and the combustion chamber heating gas branch pipe two are connected in parallel, and adjusting devices are arranged on the combustion chamber heating gas branch pipe one and the combustion chamber heating gas branch pipe two.

[0007] The adjusting devices each comprise a gas adjusting branch pipe, an exchange plug, an adjusting plug and a orifice plate box, the adjusting plug, the orifice plate box and the exchange plug are sequentially connected from bottom to top, and the gas adjusting branch pipe is connected in parallel with the orifice plate box.

[0008] The gas adjusting branch pipe is provided with an adjusting valve.

[0009] The number of the adjusting devices is 2N, and N is the number of the combustion chambers.

[0010] Compared with the prior art, the adjusting unit has the following beneficial effects:

[0011] 1. By connecting the adjusting unit and the combustion chamber gas heating pipeline in parallel, the adjusting valve is added on both sides of the orifice plate box while the original function of the orifice plate box is retained, and the temperature adjusting effect is improved.

[0012] 2. The original function of the orifice plate box is retained, when the adjusting valve opening is too large or too small to adjust, the operator can change the orifice plate in the orifice plate box to change the opening of the adjusting valve, which is simple to operate and easy to realize.

[0013] 3. The number of the adjusting valves of the adjusting unit of each coke oven is large, the adjusting valves are installed on the small-size pipeline connected in parallel with the gas main pipeline, the diameter of each adjusting valve is greatly reduced, and the direct economic cost is greatly reduced.

[0014] 4. The size of the adjusting valve is reduced, the gas consumption of each adjusting valve is reduced, and the energy consumption is greatly reduced.

[0015] 5. The adjusting valve is installed on the small-size pipeline connected in parallel with the gas main pipeline, the adjusting valve does not need to be directly connected with the adjusting plug and the exchange plug, the problem of limited installation space is solved, and the valve manufacturing and installation difficulty is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a total schematic view of the coke oven gas branch pipe adjusting device.

[0017] Figure 2 It is a combustion chamber temperature adjusting method flow chart.

[0018] Figure 3 It is an orifice plate replacement early warning and valve fault detection logic control diagram.

[0019] Figure 4 It is a branch pipe adjusting valve flow range schematic view.

[0020] Figure 5 is a schematic view of a combustion chamber temperature regulation management monitoring panel.

[0021] In the figure: 1 - combustion chamber heating gas branch pipe 2 - exchange cock 3 - regulating cock 4 - orifice box 5 - stop valve 6 - stop valve 7 - gas regulating branch pipe 8 - purge valve 9 - regulating valve. DETAILED DESCRIPTION

[0022] The utility model will be described in detail below in conjunction 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.

[0023] 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.

[0024] Example 1

[0025] A coke oven gas heating single-hole combustion chamber temperature regulation system, see Figure 1 , comprising a regulating unit, one end of each regulating unit is connected with a heating gas main pipe, and the other end of each regulating unit is connected with a corresponding combustion chamber; the regulating unit comprises combustion chamber heating gas branch pipe 1 one and combustion chamber heating gas branch pipe 1 two, combustion chamber heating gas branch pipe 1 one and combustion chamber heating gas branch pipe 1 two are connected in parallel, and adjusting devices are arranged on combustion chamber heating gas branch pipe 1 one and combustion chamber heating gas branch pipe 1 two, each adjusting device comprises a gas regulating branch pipe 7, an exchange cock (2), a regulating cock (3), and an orifice box (4), the regulating cock (3), the orifice box (4), and the exchange cock (2) are connected in order from bottom to top, the gas regulating branch pipe 7 is connected in parallel with the orifice box 4, stop valves 5, a regulating valve, and stop valves 6 are arranged in order on the gas regulating branch pipe 7, and a purge valve 8 is arranged at the pipeline connection position of the stop valves 5 and the regulating valve 9.

[0026] Working principle, content as follows:

[0027] 1) The orifice box (4) is arranged as shown in Figure 4

[0028] Suppose that 8 kinds of orifice plates are designed in the orifice plate box (4), and the sizes are numbered from small to large as 1-8#, and the commonly used orifice plate is 6#, so the inserted orifice plate size should be one size smaller than the designed orifice plate, i.e. 5# orifice plate; according to the coke oven operation experience, the orifice plate with a difference of 1 mm in diameter affects the combustion chamber temperature range of 20-25 ℃, so the gas flow change affecting the combustion chamber temperature range of 20-25 ℃ is the accurate adjustment range of the regulating valve; if the difference between the diameters of adjacent orifice plates is larger, the flow of the regulating valve 9 is larger, and the selected regulating valve 9 caliber will also be larger, which will cause cost increase and adjustment precision decrease, so generally the difference between adjacent orifice plates is only 1 mm.

[0029] 2) The working principle of the combustion chamber temperature regulation management monitoring panel is described in detail, see Figure 5

[0030] During normal production, the adjusting cock 3, the stop valve 5 and the stop valve 6 are in the open state, and the purge valve 8 is in the closed state; when the exchange cock 2 of the combustion chamber heating gas branch pipe 1-I is opened, the exchange cock 2 of the combustion chamber heating gas branch pipe 1-II is in the closed state, and the regulating valves 9 of all the combustion chamber heating gas branch pipes 1-I of the 1-66# combustion chambers are in the working state, and the regulating valves 9 of the combustion chamber heating gas branch pipes 1-II are in the non-working state; see Figure 5 The working state, target temperature, measured temperature, regulating valve state, current orifice plate size and recommended orifice plate size of the combustion chamber heating gas branch pipe 1-I of the 1-66#A path are displayed on the heating regulation monitoring panel; while the working state, target temperature, measured temperature and valve state of the combustion chamber heating gas branch pipe 1-II of the 1-66#B path are in the gray invalid state, and only the current orifice plate size and recommended orifice plate size are displayed on the panel; when the exchange cock 2 of the combustion chamber heating gas branch pipe 1-I is closed, the exchange cock 2 of the combustion chamber heating gas branch pipe 1-II is in the open state at this time, the regulating valves 9 of all the combustion chamber heating gas branch pipes 1-I of the 1-66# combustion chambers are in the non-working state, and the regulating valves 9 of the combustion chamber heating gas branch pipes 1-II are in the working state; the working state, target temperature, measured temperature, valve state, current orifice plate size and recommended orifice plate size of the combustion chamber heating gas branch pipe 1-II of the 1-66#B path are displayed on the heating regulation monitoring panel; while the working state, target temperature, measured temperature and valve state of the combustion chamber heating gas branch pipe 1-I of the 1-66#A path are in the gray invalid state, and only the current orifice plate size and recommended orifice plate size are displayed on the panel.

[0031] 3) When the regulating valve 9 participates in automatic regulation, the regulating target temperature should be set first, see Figure 5, 1# combustion chamber target temperature set to 1200℃, the measured temperature of 1199℃, the measured temperature close to the target temperature and the adjustment valve display is normal, indicating that the 1# combustion chamber heating gas branch 1-1 automatic adjustment is effective; 2# combustion chamber measured temperature of 1185℃, far less than the target temperature, without changing the target temperature and the premise of no fault adjustment, if the opening of the regulating valve is always long time at 90% or more, indicating that the orifice size is too small, heating gas is not enough, the regulating valve has been in the state of non-adjustable; at this time the valve state display opening too large, the orifice size is recommended to automatically change to No. 6; 15# combustion chamber measured temperature of 1215°C, far greater than the target temperature, without changing the target temperature and the premise of no fault adjustment, if the opening of the regulating valve is always long time at 10% or less, indicating that the orifice size is too large, heating gas is excessive, the regulating valve has been in the state of non-adjustable; at this time the regulating valve state display opening too small, the orifice size is recommended to automatically change to No. 4; when the replacement orifice suggestion warning information appears, first of all, the maintenance personnel should be arranged to check the coke oven heating system for some common faults, common faults include exchange of the cock is not open, orifice is not clean, orifice before and after the pipeline is blocked, nozzle is hanging naphthalene, if the troubleshooting and repair, the measured temperature will gradually approach the target temperature, the regulating valve 9 opening will also return to the normal opening, at this time the control system will be and the recommended orifice size reset to the current orifice size; if no fault is found or after troubleshooting, the opening of the regulating valve is still too large or too small and cannot reach the target temperature, at this time the orifice box should be manually replaced, after replacement, click confirm on the management monitoring panel, at this time the current orifice size is updated to the recommended orifice size, at the same time the system logic interlock function will automatically reset; when 2#, 15# combustion chamber heating gas branch 1-1 shows that the orifice should be replaced, although the combustion chamber heating gas branch 1-2 is not working at this time, but because the combustion chamber heating gas branch 1-1 and the combustion chamber heating gas branch 1-2 work alternately and the resistance is the same most of the time, therefore the monitoring panel branch 2 will also produce a suggestion of replacing the orifice warning, if the combustion chamber heating gas branch 1-2 orifice is not actually replaced, there is no need to click the confirm key, when the combustion chamber heating gas branch 1-2 works, if the measured temperature returns to the target temperature, the size shown in the combustion chamber heating gas branch 1-2 suggestion replacement orifice column will automatically reset to the current orifice size; the 31# combustion chamber gas branch system shows that the regulating valve is faulty, at this time although the measured temperature is not consistent with the target temperature, the system will not give a suggestion of replacing the orifice, but needs to repair the faulty regulating valve, if the regulating valve is blocked, the blowdown valve (8) can be opened to introduce blowdown steam; if it needs to be replaced or disassembled for repair, then close the stop valve 5 and the stop valve 6, then directly disassemble, at this time the orifice box can be temporarily adjusted.

[0032] The utility model discloses a regulation unit and combustion chamber coal gas heating pipeline parallelly connected mode, has kept the original function of the orifice plate box at the same time, has increased the regulating valve at the both sides of orifice plate box, has improved the temperature control effect, has kept the function of the original orifice plate box, when the regulating valve opening is too big or too small and cannot adjust, operating personnel can change the opening of regulating valve through changing the orifice plate in orifice plate box, and the operation is simple, and easy to realize, the number of regulating valve of the regulation unit of each coke oven is much, and the regulating valve is installed on the small -size pipeline parallelly connected with the coal gas main, makes every regulating valve aperture greatly reduces, makes direct economic cost greatly drops, reduces the size of regulating valve, makes every regulating valve gas consumption reduces, and energy consumption greatly reduces, and the regulating valve is installed on the small -size pipeline parallelly connected with the coal gas main, need not regulating valve and regulating plug and exchange plug are directly connected, has solved the problem of limited installation space, makes valve manufacturing, and the difficulty of installation reduces.

Claims

1. A coke oven gas heating single-hole combustion chamber temperature regulating system, characterized in that, The adjusting unit is connected with the heating gas main pipe at one end and connected with the corresponding combustion chamber at the other end; The adjusting unit comprises a first combustion chamber heating gas branch pipe and a second combustion chamber heating gas branch pipe, which are connected in parallel, and the first combustion chamber heating gas branch pipe and the second combustion chamber heating gas branch pipe are both provided with adjusting devices; The adjusting device comprises a gas adjusting branch pipe, an exchange plug, an adjusting plug and a orifice plate box, which are connected in sequence from bottom to top, and the gas adjusting branch pipe is connected with the orifice plate box in parallel. The gas adjusting branch pipe is provided with an adjusting valve.

2. A system for heating a single-cell combustion chamber for coke oven gas according to claim 1, characterized in that, The number of the adjusting devices is 2N, and N is the number of the combustion chambers.

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