WO2021051290A1

WO2021051290A1 - Automatic cooling control system for fire grate gap of garbage incinerator

Info

Publication number: WO2021051290A1
Application number: PCT/CN2019/106324
Authority: WO
Inventors: 郑玉成
Original assignee: 深圳市能源环保有限公司
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2021-03-25

Abstract

Provided is an automatic cooling control system for a fire grate gap of a garbage incinerator. A front fan is arranged at the front end of the fire grate gap; a rear fan is arranged at the rear end of the fire grate gap; several monitoring points are arranged in a fire grate gap passageway at intervals; a high-pressure water spraying and atomization nozzle is arranged at each monitoring point; correspondingly, a set of monitoring devices is arranged for each monitoring point; each set of monitoring devices is composed of a temperature detector and a smoke sensor; the high-pressure water spraying and atomization nozzle is connected to an external high-pressure water source by means of a pipeline; an electromagnetic valve is further provided; the temperature detector and the smoke sensor transmit signals to the electromagnetic valve separately; and the electromagnetic valve controls a high-pressure water pipeline to be closed or opened. In addition, a system delayer is further provided, the temperature detector and the smoke sensor transmit signals to the delayer separately, and the system delayer controls the operation of the front fan and the rear fan. By means of the control system, water is sprayed to the monitoring point by means of the high-pressure water spraying and atomization nozzle and diversion is carried out by the front fan and the rear fan, such that the temperature of the fire grate may be rapidly reduced.

Description

Automatic cooling control system for the gap between the grate of the garbage incinerator

Technical field

The invention relates to auxiliary equipment for a garbage incinerator grate, in particular to an automatic cooling control system for the gap of the garbage incinerator grate.

Background technique

At present, the lower part of the grate of some waste incinerators will be equipped with a cone-shaped lower ash hopper, and a gap will be formed between the two parallel ash hoppers. The driving device of the grate is generally composed of a hydraulic device with greater power. Due to functional requirements, the hydraulic device is installed at the top position of the gap. The original cooling system is only equipped with a grate cooling air injection port at each hydraulic cylinder position to cool the sensor of the hydraulic cylinder. The problems with this cooling system are: 1. The output of the fan is small, and there are more air outlets, and the air volume is limited. 2. Due to the small gap space, there is almost no air flow, which causes heat to accumulate easily. The continuous high temperature in a small space seriously affects the service life of hydraulic cylinders, stroke sensors, and leak-proof O-rings, and often causes oil drips in the hydraulic cylinders to leak out, which is extremely easy to cause fires in a long-term high temperature environment. This is a great potential hazard for workers doing maintenance work in this space.

Summary of the invention

In order to overcome the problems of the prior art, the present invention provides an automatic cooling control system for the gap between the grate of a garbage incinerator. A front fan is provided at the front end of the gap, a rear fan is provided at the rear end of the gap, and the gap aisle is spaced apart. For several monitoring points, one high-pressure water spray nozzle is set at each monitoring point. Correspondingly, a set of monitoring devices are set for each monitoring point. Each set of monitoring devices is composed of a temperature detector and a smoke sensor. The high-pressure water spray atomization nozzle is connected to an external high-pressure water source through a pipeline, and is also provided with a solenoid valve. The temperature detector and the smoke detector respectively transmit signals to the solenoid valve, and the solenoid valve controls the closing of the high-pressure water pipeline Or open; at the same time, a system delayer is also set, the temperature detector and the smoke sensor respectively transmit signals to the delayer, and the system delayer controls the operation of the front fan and the rear fan. When the temperature at the monitoring point of the grate cracks of the waste incinerator rises to a certain level or smoke appears in the cracks, the temperature detector and the smoke detector will send a signal. First turn on the high-pressure water spray nozzle to spray water for 30 seconds, and then turn it on again. , The rear fan conducts drainage, which can quickly reduce the ambient temperature and ensure safety.

The technical solution adopted by the present invention to solve its technical problems is: an automatic cooling control system for the gap of the garbage incinerator grate, which is characterized in that a front fan is provided at the front end of the gap, and a rear fan is provided at the rear end of the gap. A number of monitoring points are set in the gap aisle at intervals, and a high-pressure water atomizing nozzle is set at each monitoring point. Correspondingly, a set of monitoring devices is set for each monitoring point, and each set of monitoring devices consists of a temperature detector. And a smoke detector,

The high-pressure water spray atomization nozzle is connected to an external high-pressure water source through a pipeline, and is also provided with a solenoid valve. The temperature detector and the smoke detector respectively transmit signals to the solenoid valve, and the solenoid valve controls the closing of the high-pressure water pipeline Or open; at the same time, a system delayer is also provided, the temperature detector and the smoke sensor respectively transmit signals to the system delayer, and the system delayer controls the operation of the front fan and the rear fan.

The preferred solution of the present invention is that each high-pressure water spray atomization nozzle is provided with a corresponding solenoid valve, and each solenoid valve controls the corresponding high-pressure water spray atomization nozzle to open or close.

The preferred solution of the present invention is to adopt the single-point smoke control mode. When a smoke detector at a monitoring point detects smoke, the smoke detector transmits the signal to the solenoid valve corresponding to the monitoring point, and at the same time transmits the signal to the system extension. At this time, the solenoid valve of the monitoring point is opened, and the high-pressure water spray atomization nozzle starts to spray water. At the same time, the system delayer starts to enter the delay stage. After a delay of 30 seconds, the system delayer starts the said The front fan and the rear fan are activated; next, when the smoke sensor does not detect smoke, the smoke sensor transmits the signal to the corresponding solenoid valve and at the same time to the system delayer, and the corresponding solenoid valve controls the corresponding high-pressure spray The water atomization nozzle stops spraying water, and the front fan and rear fan are controlled by the system delayer to stop running.

The preferred solution of the present invention is to adopt a single-point temperature control mode. When the temperature of a monitoring point exceeds 65°C, the temperature detector transmits the signal to the solenoid valve corresponding to the monitoring point, and at the same time transmits the signal to the system for delay At this time, the solenoid valve at the monitoring point is opened, and the high-pressure water spray nozzle starts to spray water. At the same time, the system delayer starts to enter the delay stage. After the delay is 30 seconds, the system delayer starts the previous The fan and the rear fan are started, and the temperature of the gap is rapidly reduced by spraying water and induced air; next, when the temperature of the monitoring point drops to 55°C by the temperature detector, the temperature detector will transmit the signal to the corresponding solenoid valve. , At the same time, the signal is transmitted to the system delayer, the solenoid valve controls the high-pressure water atomizing nozzle to stop spraying water, and the system delayer controls the front fan and the rear fan to stop running.

The preferred solution of the present invention is to adopt a dual-point temperature control mode. When the temperature of two monitoring points exceeds 60°C, the temperature detector transmits the signal to the solenoid valve corresponding to the two monitoring points, and at the same time transmits the signal Give the system delayer. At this time, the solenoid valves corresponding to the two monitoring points are opened, and the high-pressure water atomizing nozzle is opened. At the same time, the system delayer starts to enter the delay stage. After the delay is 30 seconds, the system delays Start the operation of the front fan and the rear fan,

When the temperature of any one of the two monitoring points drops to 55°C, the temperature detector at the monitoring point transmits the signal to the corresponding solenoid valve, and the corresponding solenoid valve controls the high-pressure water spray nozzle at this point to close.

Only when the temperature of the two monitoring points drops to 55°C, the temperature detectors of the two monitoring points simultaneously transmit the signal to the system delayer, and the system delayer controls the front fan and the rear fan to stop running.

The preferred solution of the present invention is that a main solenoid valve is arranged in the high-pressure water main pipeline, and the main electromagnetic valve controls the opening or closing of the high-pressure water main pipeline.

The preferred solution of the present invention is to adopt the single-point smoke control mode. When the smoke detector at a certain monitoring point detects smoke, the smoke detector transmits the signal to the main solenoid valve and the system delayer. At this time, the main solenoid The valve is opened, and the high-pressure water spray nozzles of various high-pressure spray nozzles start to spray water. At the same time, the system delayer starts to enter the delay stage. After a delay of 30 seconds, the system delayer starts the front fan and the rear fan; , When the smoke sensor does not detect smoke, the smoke sensor transmits the signal to the main solenoid valve and the system delayer respectively, the solenoid valve controls the high-pressure water spray nozzle to stop spraying water, and the system delayer controls the front fan Then the fan stopped running.

The preferred solution of the present invention is to adopt a single-point temperature control mode. When the temperature of a monitoring point exceeds 65°C, the temperature detector transmits the signal to the main solenoid valve and the system delayer. At this time, the main solenoid valve Turn on, and all high-pressure water spray nozzles are turned on at the same time. At the same time, the system delayer starts to enter the delay stage. After a delay of 30 seconds, the system delayer starts the front fan and the rear fan. The induced air causes the temperature of the gap to drop rapidly; next, when the temperature of the monitoring point drops to 55°C by the temperature detector, the temperature detector transmits the signal to the main solenoid valve and the system delayer respectively, and the main solenoid valve The high-pressure water atomization nozzles of each channel are controlled to close, and the front fan and the rear fan are controlled by the system delayer to stop running.

The preferred solution of the present invention is to adopt the dual-point temperature control mode. When the temperature of two monitoring points exceeds 60°C, the temperature detector transmits the signal to the main solenoid valve and the system delayer respectively. At this time, the total The solenoid valve is opened, and the high-pressure water spray nozzles of each channel are opened at the same time. At the same time, the system delayer starts to enter the delay stage. After a delay of 30 seconds, the system delayer starts the operation of the front and rear fans.

Only when the temperature of the two monitoring points drops to 55°C at the same time, the temperature detectors of the two monitoring points respectively transmit the signal to the main solenoid valve and the system delayer, and the main solenoid valve controls the high-pressure water spray of each channel The chemical nozzle is closed, and at the same time, the front fan and the rear fan are controlled by the system delayer to stop running.

The beneficial effects of the present invention are: the present invention provides an automatic cooling control system for the gap between the grate of a garbage incinerator, a front fan is installed at the front end of the gap, a rear fan is installed at the rear end of the gap, and the gap aisle is arranged at intervals For several monitoring points, one high-pressure water spray nozzle is set at each monitoring point. Correspondingly, a set of monitoring devices are set for each monitoring point. Each set of monitoring devices is composed of a temperature detector and a smoke sensor. The high-pressure water spray atomization nozzle is connected to an external high-pressure water source through a pipeline, and is also provided with a solenoid valve. The temperature detector and the smoke detector respectively transmit signals to the solenoid valve, and the solenoid valve controls the closing of the high-pressure water pipeline Or open; at the same time, a system delayer is also set, the temperature detector and the smoke sensor respectively transmit signals to the delayer, and the system delayer controls the operation of the front fan and the rear fan. When the temperature at the monitoring point of the grate cracks of the waste incinerator rises to a certain level or smoke appears in the cracks, the temperature detector and the smoke detector will send a signal. First turn on the high-pressure water spray nozzle to spray water for 30 seconds, and then turn it on again. , The rear fan conducts drainage, which can quickly reduce the ambient temperature and ensure safety.

Description of the drawings

Figures 1 and 2 are schematic diagrams of the structure of the first embodiment proposed by the present invention. Among them, Figure 1 is a waterway layout, and Figure 2 is a schematic diagram of automatic control of the system.

Figures 3 and 4 are schematic diagrams of the structure of the second embodiment proposed by the present invention. Among them, Figure 3 is a waterway layout, and Figure 4 is a schematic diagram of automatic control of the system.

detailed description

Figures 1 and 2 are schematic diagrams of the structure of the first embodiment proposed by the present invention. Figure 1 is a waterway layout diagram, and Figure 2 is a schematic diagram of the system control source. The figure shows that in this example, three monitoring points are set at intervals in the gap aisle, and correspondingly, three high-pressure water spray nozzles are set respectively.

Figure 1 shows that the high-pressure water atomizing nozzle is connected to an external high-pressure water source through a pipeline. Figure 2 shows that at each monitoring point, the temperature detector and the smoke sensor respectively transmit the signal to the corresponding solenoid valve, which controls the closing or opening of the high-pressure water pipeline at the monitoring point; at the same time, the temperature detector and the smoke sensor The signal is respectively transmitted to the system delayer, and the system delayer controls the front fan and the rear fan.

In this example, the single-point smoke control mode is adopted. When a smoke sensor at a monitoring point detects smoke, the smoke sensor transmits the signal to the solenoid valve corresponding to the monitoring point, and at the same time transmits the signal to the system delayer. At this time, the solenoid valve at the monitoring point is opened, and the high-pressure water atomizing nozzle starts to spray water. At the same time, the system delayer starts to enter the delay stage. After a delay of 30 seconds, the system delayer starts the front fan and The rear fan starts; next, when the smoke sensor does not detect smoke, the smoke sensor transmits the signal to the corresponding solenoid valve and at the same time to the system delayer, and the corresponding solenoid valve controls the corresponding high-pressure water spray atomization The nozzle stops spraying water, and the front fan and rear fan are controlled by the system delayer to stop running.

The present invention suggests that on the basis of the first embodiment, a single-point temperature control mode is adopted. When the temperature of a monitoring point exceeds 65°C, the temperature detector transmits the signal to the solenoid valve corresponding to the monitoring point, and at the same time The signal is transmitted to the system delayer. At this time, the solenoid valve of the monitoring point is opened, and the high-pressure water atomizing nozzle starts to spray water. At the same time, the system delayer starts to enter the delay stage. After a delay of 30 seconds, the system delays. When the timer starts the front fan and the rear fan, the temperature of the gap is rapidly reduced by spraying water and induced air; next, when the temperature of the monitoring point drops to 55°C, the temperature detector will The signal is transmitted to the corresponding solenoid valve and the signal is transmitted to the system delayer. The solenoid valve controls the high-pressure water spray atomizing nozzle to stop spraying, and the system delayer controls the front and rear fans to stop running.

The present invention suggests that, on the basis of the first embodiment, a dual-point temperature control mode can also be used. When the temperatures of two monitoring points are both above 60°C, the temperature detector transmits the signal to the corresponding two monitoring points. At the same time, the solenoid valve of the two monitoring points is opened and the high-pressure water atomizing nozzle is opened. At the same time, the system delayer starts to enter the delay stage. After 30 seconds, the system delayer starts the operation of the front fan and rear fan,

Figures 3 and 4 are schematic diagrams of the structure of the second embodiment proposed by the present invention. Among them, Figure 3 is a waterway layout, and Figure 4 is a schematic diagram of automatic control of the system. The figure shows that the difference from the first embodiment of the present invention is that in this example, a main solenoid valve is provided in the high-pressure water main pipeline, and the main electromagnetic valve controls the opening or closing of the high-pressure water main pipeline.

In this example, the single-point smoke control mode is adopted. When the smoke sensor at a monitoring point detects smoke, the smoke sensor transmits the signal to the main solenoid valve and the system delayer. At this time, the main solenoid valve opens, Each high-pressure water spray atomization nozzle sprays water at the same time, and at the same time, the system delayer starts to enter the delay stage. After a delay of 30 seconds, the system delayer starts the front fan and the rear fan; When the smoker does not detect the smoke, the smoke sensor transmits the signal to the main solenoid valve and the system delayer respectively. The solenoid valve controls the high-pressure water spray atomizing nozzle to stop spraying water, and the system delayer controls the front fan and the rear fan Stop running.

The present invention suggests that on the basis of the second embodiment, a single-point temperature control mode is adopted. When the temperature of a certain monitoring point exceeds 65°C, the temperature detector transmits the signal to the main solenoid valve and the system delayer respectively. At this time, the main solenoid valve is opened and the high-pressure water spray nozzles of each channel are opened at the same time. At the same time, the system delayer starts to enter the delay stage. After a delay of 30 seconds, the system delayer starts the front fan and the rear fan Start, the temperature of the gap is rapidly reduced by spraying water and induced air; next, when the temperature of the monitoring point drops to 55°C by the temperature detector, the temperature detector will transmit the signal to the main solenoid valve and the system delay. The main solenoid valve controls each high-pressure water spray nozzle to close, and the system delayer controls the front and rear fans to stop running.

The present invention suggests that on the basis of the second embodiment, a two-point temperature control mode can also be adopted. When the temperature of two monitoring points exceeds 60°C, the temperature detector will transmit the signal to the main solenoid valve and the system respectively. Delayer. At this time, the main solenoid valve is opened and the high-pressure water spray nozzles of each channel are opened at the same time. At the same time, the system delayer starts to enter the delay stage. After a delay of 30 seconds, the system delayer starts the previous The fan and the rear fan are running,

In the above-mentioned embodiments, the high-pressure water spray atomization nozzle sprays water for 30 seconds and then turns on the front and rear fans. The purpose is: 1. The temperature can be quickly reduced by spraying water, 2. It can absorb smoke and dust 3. It can extinguish the early weak Mars, 4 to prevent the weak Mars from getting stronger and stronger under the action of air convection when the front and rear fans are turned on first, igniting nearby combustibles.

Claims

A garbage incinerator grate gap automatic cooling control system, which is characterized in that a front fan is arranged at the front end of the gap, a rear fan is installed at the rear end of the gap, and a number of monitoring points are arranged at intervals in the gap aisle. One monitoring point is equipped with a high-pressure water spray atomizing nozzle. Correspondingly, a group of monitoring devices is set for each monitoring point. Each group of monitoring devices is composed of a temperature detector and a smoke detector.

The high-pressure water spray atomization nozzle is connected to an external high-pressure water source through a pipeline, and is also provided with a solenoid valve. The temperature detector and the smoke detector respectively transmit signals to the solenoid valve, and the solenoid valve controls the closing of the high-pressure water pipeline Or open; at the same time, a system delayer is also provided, the temperature detector and the smoke sensor respectively transmit signals to the system delayer, and the system delayer controls the operation of the front fan and the rear fan.
The automatic cooling control system for the gap between the garbage incinerator grate according to claim 1, wherein a corresponding solenoid valve is provided on each high-pressure water atomizing nozzle, and each solenoid valve controls the corresponding high-pressure spray nozzle. The water atomization nozzle is turned on or off.
The automatic cooling control system for the gap between the garbage incinerator grate according to claim 2, wherein the single-point smoke control mode is adopted. When a smoke detector at a monitoring point detects smoke, the smoke detector will signal It is transmitted to the solenoid valve corresponding to the monitoring point, and the signal is transmitted to the system delayer. At this time, the solenoid valve of the monitoring point is opened, the high-pressure water spray nozzle starts to spray water, and at the same time, the system delayer starts to enter the delay. At the time stage, after a delay of 30 seconds, the system delayer starts the front fan and the rear fan; next, when the smoke sensor does not detect smoke, the smoke sensor transmits the signal to the corresponding solenoid valve and at the same time Passed to the system delayer, the corresponding high-pressure water spray atomization nozzle is controlled by the corresponding solenoid valve to stop spraying water, and the system delayer controls the front fan and the rear fan to stop running.
The automatic cooling control system for the gap between the garbage incinerator grate according to claim 2, characterized in that a single-point temperature control mode is adopted. When the temperature of a certain monitoring point exceeds 65°C, the temperature detector transmits the signal Give the solenoid valve corresponding to the monitoring point, and at the same time transmit the signal to the system delayer. At this time, the solenoid valve of the monitoring point is opened, the high-pressure water spray nozzle starts to spray water, and the system delayer starts to enter the delay In the stage, after a delay of 30 seconds, the system delayer starts the front fan and the rear fan, and the temperature of the gap is rapidly reduced by spraying water and induced air; next, when the temperature detector detects the temperature of the monitoring point When the temperature drops to 55°C, the temperature detector respectively transmits the signal to the corresponding solenoid valve and the signal to the system delayer. The solenoid valve controls the high-pressure water spray nozzle to stop spraying water, and the system delayer controls the front fan Then the fan stopped running.
The automatic cooling control system for the gap between the garbage incinerator grate according to claim 2, characterized in that a dual-point temperature control mode is adopted. When the temperature of two monitoring points exceeds 60°C, the temperature detector will The signal is transmitted to the solenoid valve corresponding to the two monitoring points, and the signal is transmitted to the system delayer. At this time, the solenoid valve corresponding to the two monitoring points is opened, the high-pressure water spray nozzle is opened, and the system is delayed The starter enters the delay stage. After a delay of 30 seconds, the system delayer starts the operation of the front fan and the rear fan.

When the temperature of any one of the two monitoring points drops to 55°C, the temperature detector at the monitoring point transmits the signal to the corresponding solenoid valve, and the corresponding solenoid valve controls the high-pressure water spray nozzle at this point to close.

Only when the temperature of the two monitoring points drops to 55°C, the temperature detectors of the two monitoring points simultaneously transmit the signal to the system delayer, and the system delayer controls the front fan and the rear fan to stop running.
The automatic cooling control system for the gap between the garbage incinerator grate according to claim 1, wherein a main solenoid valve is arranged in the high-pressure water main pipeline, and the main electromagnetic valve controls the opening or closing of the high-pressure water main pipeline.
The automatic cooling control system for the gap between the garbage incinerator grate according to claim 6, characterized in that a single-point smoke control mode is adopted, and when a smoke detector at a monitoring point detects smoke, the smoke detectors will separately The signal is transmitted to the main solenoid valve and the system delayer. At this time, the main solenoid valve is opened, and the high-pressure water spray nozzles of each channel start to spray water. At the same time, the system delayer starts to enter the delay stage, after a delay of 30 seconds , The system delayer starts the front fan and the rear fan; next, when the smoke sensor does not detect smoke, the smoke sensor transmits the signal to the main solenoid valve and the system delayer respectively, and the solenoid valve controls the high pressure The water spray atomization nozzle stops spraying water, and the front fan and rear fan are controlled by the system delayer to stop running.
The automatic cooling control system for the gap between the garbage incinerator grate according to claim 6, characterized in that a single-point temperature control mode is adopted. When the temperature of a certain monitoring point exceeds 65°C, the temperature detector will signal Passed to the main solenoid valve and the system delayer. At this time, the main solenoid valve is opened and the high-pressure water spray nozzles of each channel are opened at the same time. At the same time, the system delayer starts to enter the delay stage. After a delay of 30 seconds, the system The delay device starts the front fan and the rear fan, and the temperature of the gap is rapidly reduced by spraying water and induced air; next, when the temperature detector detects that the temperature of the monitoring point drops to 55°C, the temperature detector respectively The signal is transmitted to the main solenoid valve and the system delayer. The main solenoid valve controls the closing of the high-pressure water spray nozzles of each channel, and the system delayer controls the front fan and the rear fan to stop running.
The automatic cooling control system for the gap between the garbage incinerator grate according to claim 6, characterized in that a dual-point temperature control mode is adopted, and when the temperature of two monitoring points exceeds 60°C, the temperature detectors are respectively The signal is transmitted to the main solenoid valve and the system delayer. At this time, the main solenoid valve is opened and the high-pressure water spray nozzles of each channel are opened at the same time. At the same time, the system delayer starts to enter the delay stage, after a delay of 30 seconds , The system delayer starts the operation of the front fan and the rear fan,

Only when the temperature of the two monitoring points drops to 55°C at the same time, the temperature detectors of the two monitoring points respectively transmit the signal to the main solenoid valve and the system delayer, and the main solenoid valve controls the high-pressure water spray of each channel The chemical nozzle is closed, and at the same time, the front fan and the rear fan are controlled by the system delayer to stop running.