CN210979863U - Spray gun for automatic water spraying and cooling control system of garbage incinerator - Google Patents
Spray gun for automatic water spraying and cooling control system of garbage incinerator Download PDFInfo
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- CN210979863U CN210979863U CN201920999719.9U CN201920999719U CN210979863U CN 210979863 U CN210979863 U CN 210979863U CN 201920999719 U CN201920999719 U CN 201920999719U CN 210979863 U CN210979863 U CN 210979863U
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Abstract
The utility model relates to the field of municipal solid waste incineration, in particular to a spray gun for a water spray cooling automatic control system of a waste incinerator, wherein the front end of the spray gun is provided with an industrial water pipe interface and an atomized compressed air interface, the spray gun is fixed on a compressed air cylinder, an industrial water pipe from a water delivery pump is connected with the spray gun interface and enters the spray gun into the spray gun and is sprayed into the incinerator, compressed air from a compressed air main pipe enters the left side and the right side of the incinerator and is divided into 3 branch pipes, and the branch pipes are respectively connected with the spray gun interface and enter a two-fluid spray gun to atomize industrial; the branch pipes are respectively connected with the cylinder interfaces through the electromagnetic valves and then divided into two paths, compressed air pushes the cylinder piston to drive the spray gun to move forward and backward under the action of the electromagnetic valves, the compressed air branch pipes are respectively connected with the cylinder interfaces and are sprayed into the sleeve to continuously cool the spray gun, and the spray gun is prevented from being burnt by high-temperature smoke.
Description
Technical Field
The utility model belongs to the technical field of municipal solid waste burns and specifically relates to a spray gun that waste incinerator water spray cooling system used.
Background
In recent years, the incineration treatment capacity of domestic garbage in China is greatly improved, and the mechanical grate furnace incineration technology is widely used at home and abroad, and is the technology which is most suitable for incinerating the garbage and producing steam for power generation by utilizing heat energy generated by garbage incineration at present.
Along with the gradual improvement of the living standard of people, the heat value of the household garbage is higher and higher, the challenge to the household garbage incinerator which is operated at present is great, and on the premise of meeting the red line operation of rated load, the garbage treatment capacity of an incineration plant is ensured to become an operation key index, so that the phenomenon of overburning of the incinerator is caused.
The continuous super-heat load operation of the incinerator caused by the increase of the calorific value of the garbage will cause the following serious problems: 1. the incinerator hearth is coked seriously, 2, the smoke temperature is too high, the thermal NOx generation is increased, the NOx can be generated to exceed the standard instantaneously, meanwhile, the consumption of a denitration agent is increased, and 3, the corrosion of a superheater and the pipe explosion frequency are increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose is solved because rubbish calorific value risees, furnace volume heat load increases and furnace coking, NOx that arouse increase, receive the hot side corrosion blast scheduling problem to through realizing automatic water spray cooling interlock control, reduce operation personnel's working strength simultaneously.
In order to solve the technical problem, the utility model provides a waste incinerator is spray gun for water spray cooling automatic control system, this spray gun front end are equipped with industry water pipe connector 21, atomizing compressed air interface 22, and spray gun 7 is fixed on compressed air cylinder 23, and the cylinder is equipped with front handle 24, back handle 25, is equipped with cylinder interface 20 and flange 27 simultaneously. An industrial water pipe interface 21 from a water delivery pump 4 is connected with a spray gun interface, enters a spray gun 7 and is sprayed into the incinerator, compressed air from a compressed air main pipe 11-1 enters the left side and the right side of the incinerator and is divided into 3 branch pipes, a first branch pipe 11-2 and a second branch pipe 11-7 are respectively connected with an atomized compressed air interface 22 and enter a two-fluid spray gun to atomize industrial water entering the industrial water pipe interface 21; the third branch pipe 11-3 and the fourth branch pipe 11-6 are respectively connected with the first cylinder connector 26-1 and the second cylinder connector 26-2 through two paths after passing through the first electromagnetic valve 9-1 and the second electromagnetic valve 9-2, compressed air pushes a cylinder piston to drive the spray gun to move forward and backward under the action of the electromagnetic valves, the first compressed air branch pipe 11-4 and the second compressed air branch pipe 11-5 are respectively connected to the cylinder connectors 20, and the spray gun is continuously cooled in the spray sleeve 19 to prevent the spray gun 7 from being burnt by high-temperature smoke. The flange 27 is arranged and can be connected with the reverse flange of the furnace wall sleeve to play a role of fixing the spray gun.
Furthermore, the furnace wall is provided with alumina silicate fiber cotton 14 which can fix and protect the spray gun 7; the furnace wall is provided with a sleeve 19 and is connected with the spray gun through a flange 27, the spray gun is fixed inside the sleeve, and simultaneously, compressed air is continuously sprayed into the sleeve through a cylinder connector 20 to cool the spray gun.
Further, the location of the lance at the incinerator exit 28, by continuously spraying water into the furnace, has the following effects: 1. when the heat value of the garbage is too high, the rated garbage treatment capacity of the incinerator is recovered through water spraying and heat absorption, and the normal capacity of the incinerator is ensured. 2. The temperature of the flue gas at the outlet of the incinerator is controlled by spraying water for cooling, so that the over-temperature coking of a hearth is prevented, and the problems of high-temperature corrosion and dust deposition of a high-temperature superheater are avoided; 3. by cooling with water spray, the residence time of the combustion gas in a high-temperature zone is shortened, so that the generation of thermal NOx can be inhibited, and the consumption of the denitration agent is reduced.
The spray gun is used for the automatic control method of the water spray cooling of the garbage incinerator, the method is to set up the thermocouple at the incinerator exit and high-temperature superheater entrance at the same time respectively, if the smoke overtemperature phenomenon appears in the operation, namely when exceeding the temperature set value, open the electromagnetic valve automatically, the spray gun enters the incinerator automatically immediately, open water delivery pump, industrial water regulating valve and compressed air stop valve automatically subsequently; after water from an industrial water pipeline enters a water tank for storage, the water enters a two-fluid spray gun on the left side wall and the right side wall of an outlet of an incinerator through pressurization of a water delivery pump, the two-fluid spray gun is mixed and atomized with a first path of compressed air from a factory compressed air system and then is sprayed into the outlet of the incinerator, and meanwhile, the other path of compressed air enters a spray gun sleeve to continuously cool the spray gun so as to prevent the spray gun from being burnt by high-; atomized water drops enter the incinerator to be mixed with flue gas for vaporization and heat absorption, the temperature of the flue gas at the outlet of the hearth is further reduced, an opening signal of an electric control valve is given out through DCS logical operation according to the temperature fed back in real time, the water injection flow of the furnace is adjusted, when the temperature of the flue gas is reduced to a safety set value, a water delivery pump and a valve are immediately closed, compressed air pushes a cylinder piston, and a spray gun is automatically withdrawn from the furnace.
Further, by setting an industrial water tank, industrial water from an industrial water system is stored in the industrial water tank in advance, the water supply capacity of the industrial water is ensured during operation, and meanwhile, a liquid level meter is arranged in the water tank to feed back a liquid level signal in real time;
furthermore, thermocouples are respectively arranged on the left and right side walls of the outlet of the incinerator and the left and right side walls of the inlet of the high-temperature superheater, so that the running conditions of key heating surfaces of the incinerator and the waste heat boiler are fed back in real time, and double control of a temperature field is realized;
furthermore, the spray gun is arranged at the outlet of the incinerator, so that the residence time of combustion gas in a high-temperature zone can be effectively controlled, and the generation of thermal NOx can be inhibited.
Furthermore, two water delivery pumps (one for use and one for standby) are arranged at the outlet of the water tank, a flow meter and an electric regulating valve are arranged in a water pipeline at the inlet of the spray gun, the flow meter feeds back the flow of industrial water, the electric regulating valve regulates the water supply quantity entering the furnace, and the set atomized compressed air ensures the atomization effect of the industrial water after spraying people;
furthermore, the compressed air blowing function is arranged, so that the spray gun is not corroded and burnt by high-temperature smoke gas when in normal operation, and meanwhile, the compressed air cylinder is arranged to realize that the spray gun automatically enters or exits the hearth;
further, when any temperature of the smoke temperatures at the outlet of the incinerator and the inlet of the high-temperature superheater is higher than a set value, the water spraying cooling system is automatically started, then the water spraying amount of the water sprayed into the incinerator is adjusted in real time according to the temperature of the two smoke temperatures, and when the temperature of the two smoke temperatures is lower than the set value at the same time, the water spraying cooling system is automatically stopped.
Furthermore, an SE L temperature signal selector is arranged in the DCS, the average temperature value of the temperature of the left side wall and the right side wall is taken, when one measuring point is damaged, the other measuring point can be switched to, and the reliability of the automatic control system is ensured;
furthermore, a TIME DE L AY (TIME delay unit) is arranged in the DCS system, so that the sequence of the process equipment in automatic starting and stopping is ensured, and safe and stable operation is ensured.
Furthermore, in the DCS system, the temperature of the outlet of the incinerator and the real-time temperature signal of the inlet of the high-temperature superheater are respectively compared with set values of the temperature and the temperature, the opening of the control valve is regulated through PID, the two signals are maximized through MAX, the opening of the control valve is output, and then the spray flow is controlled.
The automatic control logic of the system is as follows:
the industrial water tank liquid level meter feeds back a liquid level signal to the DCS in real time for logic judgment, when the liquid level of the water tank is lower than a set value, the electric water replenishing valve is automatically opened for replenishing water, when the liquid level is higher than the set value, the electric water replenishing valve is automatically closed to stop replenishing water, and the normal water level in the water tank is ensured in real time.
When the temperature of the flue gas at the outlet of the incinerator exceeds a set value T1 which is 1050 ℃ or when the temperature of the flue gas at the inlet of the high-temperature superheater is set value T3 which is 600 ℃, a temperature signal is fed back to a DCS system, a compressed air electric valve and an electromagnetic valve are opened through logical judgment, the spray gun is automatically pushed into a hearth and is cooled and blown, a water delivery pump is started after 5s delay, logical operation is carried out according to the temperature feedback signal, the water spraying amount is adjusted by adjusting the opening degree of a water spraying electric valve, and the atomized compressed air is sprayed into the hearth to absorb heat and reduce the temperature;
when the temperature of the flue gas at the outlet of the incinerator is lower than T2 which is 950 ℃ and the temperature of the flue gas at the inlet of the high-temperature superheater is lower than T4 which is 570 ℃, the temperature signal is fed back to the DCS system, the water delivery pump is closed through logic judgment, the valves of the water spraying, purging and atomizing air pipelines are closed after 5s of delay, and the air cylinder withdraws the spray gun push rod from the hearth;
the technical effects of the utility model: when the heat value of the garbage is too high, the rated garbage treatment capacity of the incinerator is recovered through water spraying and heat absorption, and the normal capacity of the incinerator is ensured.
Secondly, the hearth is prevented from being overheated and coked by spraying water for cooling, so that the problems of high-temperature corrosion and dust deposition of the high-temperature superheater are avoided;
in addition, by water spraying for cooling, the residence time of the combustion gas in a high-temperature zone is shortened, the generation of thermal NOx can be inhibited, and the consumption of the denitration agent is reduced;
finally, the water spraying system realizes automatic interlocking cooling, realizes dual control of the outlet temperature of the incinerator and the inlet channel temperature of the high-temperature superheater through reasonable priority selection, can adjust the water spraying amount in real time according to the fluctuation of the temperature of the flue gas in the incinerator, and further reduces the working intensity of operators.
Drawings
FIG. 1 is a schematic view of the automatic control method for cooling the garbage incinerator by spraying water.
In figure 1, 1-electric regulating valve, 2-liquid level meter, 3-manual stop valve, 4-water delivery pump, 5-flowmeter, 6-industrial water tank, 7-two-fluid spray gun, 8-incinerator, 9-electromagnetic valve, 10-water delivery pipe, 11-compressed air pipe, 12-check valve, 13-electric stop valve.
Fig. 2 is a schematic view of the mounting structure of the two-fluid spray gun of the present invention.
In FIG. 2, 14-alumina silicate fiber cotton, 15-plastic refractory, 16-insulating brick, 17-silicon plate, 18-rock wool, 19-sleeve, 20-cylinder port, 21-industrial water pipe port, 22-atomized compressed air port, 23-cylinder, 24-front handle, 25-rear handle, 26-cylinder compressed air port, and 27-flange connection for spray gun
Fig. 3 is a diagram of a two-fluid lance and thermocouple arrangement.
In FIG. 3, 27-secondary air nozzle, 28-two fluid lance positioning, 29-1-incinerator outlet thermocouple, 29-2-high temperature superheater inlet thermocouple, 30-high temperature superheater;
FIG. 4 is a schematic diagram of an automatic water refill system control logic.
In fig. 4, an L value indicates a set low water level value, a LL value indicates a set low water level value, an H value indicates a set high water level value, and an HH value indicates a set high water level value;
FIG. 5 is a schematic general diagram of the logical operation of the furnace water spray cooling system in embodiment 1.
In FIG. 5, SE L is a temperature signal selector, which takes the average temperature value of the left and right side wall temperature, when one thermocouple measuring point is damaged, it can switch to another temperature measuring point to ensure the reliability of the automatic control system;
t1, taking 1050-1100 ℃ as the highest upper limit value of the temperature of the flue gas at the outlet of the incinerator;
t2, taking 880-950 ℃ as the lowest limit value of the temperature of the flue gas at the outlet of the incinerator;
t3, taking 600-610 ℃ as the highest upper limit value of the inlet temperature of the high-temperature superheater;
t4, the lowest limit value of the inlet temperature of the high-temperature superheater can be 560-580 ℃;
a and B are the temperatures of thermocouples on the left and right side walls respectively;
AVE is the average value of the thermocouple temperatures of the left and right side walls;
l AG is a filter for eliminating interference noise.
PID (called as distribution Integration Differentiation) proportional, integral and differential regulation controller. The PID control converts a difference a between a temperature set value (target value) and a temperature measured value (feedback value) into an operation value (command signal) of the valve. This command is "the corresponding action that the valve must make in order to reduce this deviation.
MAX is the logic to take the large, i.e. to select the larger opening value of the two operation results as the actual command to the valve (or actuator).
FIG. 6 is a schematic partial view of the logic operation of the furnace water spray cooling system of FIG. 5.
FIG. 7 is a schematic diagram of the logical operation of the furnace water spray cooling system of FIG. 5.
FIG. 8 is a schematic partial view of the logic operation of the furnace water spray cooling system of FIG. 5.
FIG. 9 is a schematic diagram of the logical operation of the furnace water spray cooling system of FIG. 5.
FIG. 10 is a schematic partial view of the logical operation of the furnace water spray cooling system of FIG. 5.
FIG. 11 is a schematic general diagram of the logical operation of the furnace water spray cooling system of embodiment 2.
FIG. 12 is a schematic partial view of the logical operation of the furnace water spray cooling system of FIG. 11.
FIG. 13 is a schematic partial view of the logical operation of the furnace water spray cooling system of FIG. 11.
FIG. 14 is a schematic partial view of the logical operation of the furnace water spray cooling system of FIG. 11.
FIG. 15 is a schematic partial view of the logical operation of the furnace water spray cooling system of FIG. 11.
Figure 16 is a schematic view of the lance of figure 2 and at an incinerator location.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description is given to the present invention in a clear and complete manner by referring to the drawings and examples of the present invention;
as shown in figure 1, the water spraying and cooling system of the garbage incinerator comprises an industrial water tank 6, a water delivery pump 4, a two-fluid spray gun 7, an electromagnetic valve 9, an incinerator 8, a manual stop valve 3, an electric stop valve 13, a check valve 12, a liquid level meter 2, a flow meter 5, an electric regulating valve 1, a thermocouple 29, other water pipes 10 and a compressed air pipeline 11. Industrial water from an industrial water main pipe flows to an industrial water tank 6 through a water supply pipeline 10-1 and an electric stop valve 1-1, the lower part of the water tank is led out through a water pipe, the water pipe is provided with two water delivery pumps 4-1 and 4-2, and the front and back of the water delivery pumps 4-1 and 4-2 are provided with maintenance stop valves 3-4 and 3-6, the outlets of the water delivery pumps 4-1 and 4-2 are respectively provided with two paths of water outlet pipes, one path of the water flows back to the industrial water tank 6 through a pipeline 10-2, the other two paths of the water flow converge to a pipeline 10-3 and then enter the incinerator and then enter the spray guns 7-1 and 7-2 through pipelines 10-4 and 10-5, and branch pipelines 10-4 and 10-5 are respectively provided with flow meters 5-1 and 5-2 and electric regulating valves 1-2 and 1-3. Compressed air from a compressed air main pipe 11-1 enters the left side and the right side of the incinerator and then is divided into 3 branch pipes, a first branch pipe 11-2 and a second branch pipe 11-7 are respectively connected with an atomized compressed air interface 22, a third branch pipe 11-3 and a fourth branch pipe 11-6 are respectively divided into two paths after passing through a first electromagnetic valve 9-1 and a second electromagnetic valve 9-2 and then are connected with a first air cylinder interface 26-1 and a second air cylinder interface 26-2, and a first compressed air branch pipe 11-4 and a second compressed air branch pipe 11-5 are respectively connected to an air cylinder interface 20.
Industrial water from an industrial water pipeline enters an industrial water tank 6 through an electric stop valve 1-1, the industrial water tank is provided with a liquid level meter 2 for monitoring the water level in real time, the industrial water in the water tank enters two fluid spray guns 7 on two sides of an incinerator 8 after being pressurized by a water delivery pump 4, a left spray gun 7-1 system is taken as an example, the industrial water pipe in front of the spray guns is provided with a transfer regulating valve 1-2 and a flow meter 5-1, and necessary parts of other pipelines are provided with manual stop valves 3 for convenient maintenance; the plant compressed air enters the system through 3 paths through a pipeline 11, the first path enters a two-fluid spray gun 7-1 through an electric stop valve 13-3 and a check valve 12-1 to be mixed and atomized with industrial water, the second path enters a cylinder 23 arranged at the spray gun to push the spray gun 7-1 to enter or exit the incinerator, and the third path of compressed air enters a sleeve 19 in the furnace wall through the electric stop valve 13-1 to cool the spray gun, so that the spray gun is prevented from being burnt by high-temperature smoke in the incinerator.
Fig. 2 is a schematic view of the installation structure of the spray gun of the present invention.
In fig. 2, an industrial water pipe connector 21 and an atomization compressed air connector 22 are arranged at the front end of a two-fluid spray gun 7, the spray gun 7 is fixed on a compressed air cylinder 23, and the cylinder is provided with a front handle 24, a rear handle 25, a cylinder connector 20 and a flange 27. An industrial water pipe interface 21 from a water delivery pump 4 is connected with a spray gun interface, enters a spray gun 7 and is sprayed into the incinerator, compressed air from a compressed air main pipe 11-1 enters the left side and the right side of the incinerator and is divided into 3 branch pipes, a first branch pipe 11-2 and a second branch pipe 11-7 are respectively connected with an atomization compressed air interface 22 and enter a two-fluid spray gun to atomize industrial water entering the industrial water pipe interface 21; the third branch pipe 11-3 and the fourth branch pipe 11-6 are respectively connected with the first cylinder connector 26-1 and the second cylinder connector 26-2 through two paths after passing through the first electromagnetic valve 9-1 and the second electromagnetic valve 9-2, compressed air pushes a cylinder piston to drive the spray gun to move forward and backward under the action of the electromagnetic valves, the first compressed air branch pipe 11-4 and the second compressed air branch pipe 11-5 are respectively connected to the cylinder connectors 20, and the spray gun is continuously cooled in the spray sleeve 19 to prevent the spray gun 7 from being burnt by high-temperature smoke. The flange 27 is arranged and can be connected with the reverse flange of the furnace wall sleeve to play a role of fixing the spray gun.
As shown in fig. 16, the furnace wall is provided with alumina silicate fiber cotton 14 which can fix and protect the spray gun 7; the furnace wall is provided with a sleeve 19 and is connected with the spray gun through a flange 27, the spray gun is fixed inside the sleeve, and simultaneously, compressed air is continuously sprayed into the sleeve through a cylinder connector 20 to cool the spray gun.
The lance position is set at the incinerator exit position 28, by continuously spraying water into the furnace, the following effects are achieved: when the heat value of the garbage is too high, the rated garbage treatment capacity of the incinerator is recovered by spraying water to absorb heat, and the normal capacity of the incinerator is ensured. 2. The temperature of the flue gas at the outlet of the incinerator is controlled by spraying water for cooling, so that the over-temperature coking of a hearth is prevented, and the problems of high-temperature corrosion and dust deposition of a high-temperature superheater are avoided; 3. by cooling with water spray, the residence time of the combustion gas in a high-temperature zone is shortened, so that the generation of thermal NOx can be inhibited, and the consumption of the denitration agent is reduced.
Fig. 3 is a diagram of a two-fluid lance and thermocouple arrangement.
In FIG. 3, 27-secondary air nozzle, 28-positioning of fluid injection lance, 29-1-incinerator outlet thermocouple, 29-2-high temperature superheater inlet thermocouple, 30-high temperature superheater.
The utility model discloses the system logical operation:
FIG. 4 is an automatic water supply control logic of an industrial water tank, wherein the industrial water tank is provided with a liquid level meter 2 which can monitor the liquid level of the industrial water tank 6 in real time and feed back the liquid level to a DCS system of an incineration plant, when the liquid level of the industrial water tank 6 is lower than a liquid level set value LL, an alarm signal is sent out, the system immediately starts an electric stop valve 1-1 of an industrial water pipeline for water supply through logic judgment, when the liquid level in the industrial water tank 6 is higher than a set value HH, the alarm signal is sent out, and the electric stop valve 1-1 is immediately closed through.
Example 1
Fig. 5 is a diagram of an interlocking operation of a hearth water spray cooling system, thermocouples 29-1 and 29-2 are respectively arranged at an outlet of an incinerator 8 and an inlet of a high-temperature superheater 30 to monitor flue gas temperature, temperature signals are fed back to a DCS system to be analyzed and judged, an SE L selector is used for taking an average AVE of left and right side wall temperatures A, B, when the temperature of the outlet of the incinerator 8 is higher than a set value T1-1050 ℃ or the temperature of the flue gas at the inlet of the high-temperature superheater 30 is higher than a set value T3-600 ℃, an electric regulating valve 1 of a water pipeline and an electric stop valve 13 of a compressed air pipeline are immediately opened, a water pump 4 is started after being delayed for 5s by TIME DE L AY, the superheater 7 atomizes two fluid spray guns 7 with compressed air continuously sprays water into the incinerator for cooling, the spray guns are continuously cooled by compressed air, the temperatures of the outlet of the incinerator 8 and the inlet of the high-temperature superheater 30 are fed back to the DCS system and are respectively converted into opening signals of 0-100% of the DCS regulating valve by PID regulator, then MAX is compared with a small value, the electric stop valve 1, industrial water flow is changed, the industrial water flow is changed, when the temperature of the outlet of the incinerator 8 is reduced to a set value T2-2, and.
In FIG. 6, the temperatures A and B at two measuring points at the furnace outlet are averaged after the temperatures at the two sides are accumulated, and a normal signal is output through a selector and is output as ① after being filtered through a filter.
In the figure 7, the temperatures A and B of two measuring points at the inlet of the high-temperature superheater are taken, the temperatures at the two sides are accumulated and then averaged, the selector is used for selecting a signal, and the signal is filtered by the filter and then output as ②.
In the figure 8, when the signal of the temperature ① is greater than the set temperature of T1 or the signal of the temperature ② is greater than the set temperature of T3, the push rods of the left and right air cylinders move forward, the left and right water spraying electric regulating valves are opened, the left and right atomizing air electric stop valves are opened, the left and right cooling air electric stop valves are opened, and the water delivery pump is started in a delayed mode.
In the figure 9, the signal of the temperature ① is less than the set temperature of T2, and the signal of the temperature ② is less than the set temperature of T4, the water delivery pump is immediately closed, then the push rods of the left and right air cylinders are withdrawn in a delayed mode, the left and right water spray electric regulating valves are closed in a delayed mode, the left and right atomizing air electric stop valves are closed in a delayed mode, and the left and right cooling air electric stop valves are closed in a delayed mode.
The temperature of 10 ① in FIG. 10 is compared with the temperature set at T2, ② is compared with the temperature set at T4, and the two signals are controlled by PID adjustment, and the maximum value of the two signals is obtained by MAX, and then the signals are output to control the opening of the water injection valve, so as to adjust the water injection quantity.
Example 2
In FIG. 11, only one point of the incinerator outlet temperature is measured, and the rest is similar to that in FIG. 5.
FIG. 12 shows the temperatures A and B at the outlet of the incinerator at two measuring points, the temperatures at the two sides are accumulated and averaged, AVE, and a normal signal is selected by the selector, filtered by the filter and output as ③.
In the figure 13, when the signal of the temperature ③ is greater than the set temperature of T1, the push rods of the left and right air cylinders move forward, the left and right water spraying electric regulating valves are opened, the left and right atomizing air electric stop valves are opened, the left and right cooling air electric stop valves are opened, and the water delivery pump is started in a delayed mode.
In the figure 14, the signal of the temperature ③ is less than the set temperature of T2, the output water pump stops working, the push rods of the left and right air cylinders retreat in a delayed way, the left and right water spray electric regulating valves are closed in a delayed way, the left and right atomization air electric stop valves are closed in a delayed way, and the left and right cooling air electric valves are closed in a delayed way.
The opening of the water spray valve is controlled by comparing the set temperature of T2 with that of 15 ③ in FIG. 15, and the water spray flow is controlled by PID control adjustment.
Claims (4)
1. A spray gun for a garbage incinerator water spray cooling automatic control system is characterized in that an industrial water pipe connector (21) and an atomized compressed air connector (22) are arranged at the front end of the spray gun, the spray gun (7) is fixed on a compressed air cylinder (23), the cylinder is provided with a front handle (24) and a rear handle (25), and is also provided with a cylinder connector (20) and a flange (27); an industrial water pipe connector (21) from a water delivery pump (4) is connected with a spray gun connector, enters a spray gun (7) and is sprayed into the incinerator, compressed air from a compressed air main pipe (11-1) enters the left side and the right side of the incinerator and is divided into 3 branch pipes, a first branch pipe (11-2) and a second branch pipe (11-7) are respectively connected with an atomized compressed air connector (22), and enters a two-fluid spray gun to atomize industrial water entering the industrial water pipe connector (21); the third branch pipe (11-3) and the fourth branch pipe (11-6) are respectively connected with the first cylinder connector (26-1) and the second cylinder connector (26-2) through the first electromagnetic valve (9-1) and the second electromagnetic valve (9-2) in a divided mode, compressed air pushes a cylinder piston to drive the spray gun to move forward and backward under the action of the electromagnetic valves, the first compressed air branch pipe (11-4) and the second compressed air branch pipe (11-5) are respectively connected to the cylinder connectors (20), and the spray gun is continuously cooled in the spray sleeve (19), so that the spray gun (7) is prevented from being burnt by high-temperature smoke.
2. The automatic control system lance of garbage incinerator water spray cooling according to claim 1, characterized in that there is a flange (27) connected to the reverse flange of the furnace wall sleeve to fix the lance.
3. The automatic control system spray gun of garbage incinerator water spray cooling according to claim 1, characterized by that, the furnace wall is equipped with alumina silicate fiber cotton (14), can fix and protect the spray gun (7); the furnace wall is provided with a sleeve (19) and is connected with the spray gun through a flange (27), the spray gun is fixed in the sleeve, and simultaneously, compressed air is continuously sprayed into the sleeve through an air cylinder connector (20) to cool the spray gun.
4. A lance for automatic control system of water spray cooling of garbage incinerator according to claim 1 characterized in that the lance position is set at incinerator outlet position (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920999719.9U CN210979863U (en) | 2019-06-30 | 2019-06-30 | Spray gun for automatic water spraying and cooling control system of garbage incinerator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920999719.9U CN210979863U (en) | 2019-06-30 | 2019-06-30 | Spray gun for automatic water spraying and cooling control system of garbage incinerator |
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| CN210979863U true CN210979863U (en) | 2020-07-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116926273A (en) * | 2023-09-15 | 2023-10-24 | 山西华茂智能新材料有限公司 | Gun replacing platform of magnesium spraying spheroidization station |
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2019
- 2019-06-30 CN CN201920999719.9U patent/CN210979863U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116926273A (en) * | 2023-09-15 | 2023-10-24 | 山西华茂智能新材料有限公司 | Gun replacing platform of magnesium spraying spheroidization station |
| CN116926273B (en) * | 2023-09-15 | 2023-11-24 | 山西华茂智能新材料有限公司 | Gun replacing platform of magnesium spraying spheroidization station |
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