CN211003580U - A thermal power plant ash tank clogging alarm and identification system - Google Patents

Abstract

The utility model discloses a thermal power plant ash tank ash blocking alarm and identification system, which relates to the technical field of thermal power plant automatic control. It is wound on the outer wall of the ash tank, the annular thermal resistance is evenly distributed along the vertical direction, and each thermal resistance is electrically connected to the temperature measuring instrument; the controller is electrically connected to the output end of the temperature measuring instrument, and the controller is electrically connected to the output end of the temperature measuring instrument. It includes a data acquisition module, which is used to collect the temperature data measured by the temperature measuring instrument, and a data analysis module, which is used to analyze whether the temperature difference between the different heights of the ash tank is normal. When the temperature difference is greater than the normal temperature difference, an alarm signal is issued; Monitor the temperature at different height sections of the ash tank and calculate the temperature difference between them. Through the comparison of the temperature difference, judge whether the ash tank is blocked and the location of the ash block, and issue an alarm when the ash is blocked.

Description

A thermal power plant ash tank clogging alarm and identification system

technical field

The utility model belongs to the technical field of automatic control of thermal power plants, and more particularly relates to an alarm and identification system for ash blocking in thermal power plants.

Background technique

At present, most power plants use a pneumatic ash conveying system, which uses compressed air as a medium to convey fine ash. Due to various factors such as complex and changeable ash content, mismatch of gas ash parameters, and high humidity of compressed air due to coal blending combustion, ash blocking occurs in the ash tank of coal-fired power plants. After the ash blocking occurs, it will directly affect the normal operation of the electrostatic precipitator equipment, collapse the tank, and even cause the unit to stop non-stop. At present, there is no device or system that can automatically monitor or identify the phenomenon of ash clogging in thermal power plants, which makes it difficult to detect and deal with ash clogging in the ash tank in time, and cause great harm to the normal operation of the ash tank and electrostatic precipitator. inconvenient.

Utility model content

The purpose of the utility model is to aim at the deficiencies existing in the prior art, to provide a thermal power plant ash tank ash blocking alarm and identification system, which can monitor the temperature on different height sections of the ash tank in real time and calculate the temperature difference value, through the comparison of the temperature difference value Determine whether the ash tank is blocked and the position of the ash blocking, and issue an alarm when the ash is blocked.

In order to achieve the above purpose, the utility model provides a thermal power plant ash tank ash blocking alarm identification system, the system includes:

The temperature measuring mechanism is arranged on the outside of the ash tank, and includes a plurality of thermal resistances, which are wound on the outer wall of the ash tank in a ring shape. Electrical connection of the measuring instrument;

The controller is electrically connected to the output end of the temperature measuring instrument, and the controller includes a data acquisition module for collecting temperature data measured by the temperature measuring instrument, and a data analysis module for analyzing whether the temperature difference values of the sections at different heights of the ash tank are normal , when the temperature difference is greater than the normal temperature difference, an alarm signal is issued.

Optionally, the thermal resistance is attached to the outer wall of the ash tank through thermal conductive silicone grease.

Optionally, an insulating tape is wound on the outside of the thermal resistance.

Optionally, the material of the thermal insulation tape is nylon tape.

Optionally, the temperature measuring instrument is a multi-channel temperature measuring instrument, and each thermal resistance is connected to a temperature measuring channel.

Optionally, the data analysis module includes a temperature difference calculation unit and a temperature difference comparison unit.

Optionally, the output end of the data analysis module is electrically connected with a protection relay.

Optionally, the protection relay is electrically connected with an alarm component.

Optionally, the alarm assembly includes an alarm indicator light and a buzzer.

The utility model provides an ash blocking alarm and identification system for a thermal power plant ash tank, which has the beneficial effects that: a temperature measuring mechanism is provided, and the temperature values at different heights of the outer wall of the ash tank are measured in real time through thermal resistances arranged at different heights of the outer wall of the tank; It has a data analysis module, which can calculate the temperature difference value at different heights of the outer wall of the ash tank in real time, and compare it with the standard temperature difference value to judge whether the ash tank is blocked; by observing the installation position of the two thermal resistors whose temperature difference exceeds the standard, the ash blockage can be accurately judged Location, convenient and timely processing.

Other features and advantages of the present invention will be described in detail in the detailed description section that follows.

Description of drawings

The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of the exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein, in the exemplary embodiments of the present invention, the same reference Numbers usually refer to the same parts.

FIG. 1 shows a schematic structural diagram of an ash blocking alarm identification system for a thermal power plant ash tank according to an embodiment of the present invention.

FIG. 2 shows a schematic block diagram of a system of a data analysis module of an ash blocking alarm identification system for a thermal power plant ash tank according to an embodiment of the present invention.

Description of reference numbers:

1. Temperature measuring mechanism; 2. Ash tank; 3. Thermal resistance; 4. Temperature measuring instrument; 5. Controller; 6. Data acquisition module; 7. Data analysis module; 8. Thermal insulation tape; 9. Temperature difference calculation unit ; 10, temperature difference comparison unit; 11, protection relay; 12, alarm components; 13, alarm indicator light; 14, buzzer.

Detailed ways

Preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The utility model provides an ash blocking alarm identification system for a thermal power plant ash tank, which comprises:

The temperature measuring mechanism is arranged on the outside of the ash tank, and includes a plurality of thermal resistances, which are wound on the outer wall of the ash tank in a ring shape. Electrical connection of the measuring instrument;

The controller is electrically connected to the output end of the temperature measuring instrument, the controller includes a data acquisition module for collecting temperature data measured by the temperature measuring instrument, and a data analysis module for analyzing whether the temperature difference values of the sections at different heights of the ash tank are normal , when the temperature difference is greater than the normal temperature difference, an alarm signal is issued.

Specifically, the temperature measuring instrument monitors the temperature values at different height sections of the outer wall of the ash tank through a plurality of thermal resistances. The data acquisition module can collect the temperature data measured by the temperature measuring instrument and transmit the temperature data to the data analysis module. The data analysis module Real-time calculation of the temperature difference between sections of different heights of the ash tank, and the calculated temperature difference value can be compared with the normal temperature difference value to judge whether the ash tank is blocked. When the calculated temperature difference between the installation positions of two thermal resistances When the value is greater than 10°C, the data analysis module will issue an alarm signal, indicating that the ash tank is blocked, and the location of the blockage of the ash tank can be determined by the installation position of the two thermal resistors whose temperature difference exceeds the standard.

In one example, the thermal resistor is attached to the outer wall of the ash tank through thermal conductive silicone grease.

Specifically, the thermally conductive silicone grease has good thermal conductivity and certain adhesive properties, and the thermal resistance can be pasted on the outer wall of the ash tank to facilitate the measurement of the temperature at different height sections on the outer wall of the ash tank.

In one example, the thermal resistance is wound with thermal insulation tapes on the outside.

Specifically, the thermal insulation tape can further fix the thermal resistance, prevent the thermal resistance from being dislocated or falling off, and ensure the accuracy of temperature measurement.

In one example, the insulating tape material is nylon tape. In other examples, the material of the thermal insulation tape may also be stainless steel tape or PVC tape.

In one example, the temperature measuring instrument is a multi-channel temperature measuring instrument, and each thermal resistance is connected to one temperature measuring channel.

Specifically, the multi-channel temperature measuring instrument can conveniently measure the temperature values at multiple cross-sectional positions of different heights on the outer wall of the ash canister at the same time, and facilitate the data analysis module to calculate the temperature difference between the cross-sectional positions of different heights on the outer wall of the ash canister.

In one example, the data analysis module includes a temperature difference calculation unit and a temperature difference comparison unit.

Specifically, the temperature difference calculation unit can calculate the temperature difference between the positions of different height sections of the outer wall of the ash tank, and the temperature difference comparison unit can compare the temperature difference between the different height sections of the ash tank outer wall with the standard temperature difference, and judge whether the temperature difference exceeds the standard. Whether the ash tank is blocked or not, the blockage position of the ash tank is judged by the installation position of the two thermal resistors whose temperature difference exceeds the standard.

In one example, a protection relay is electrically connected to the output end of the data analysis module.

In one example, the protection relay is electrically connected with an alarm component.

In one example, the alarm assembly includes an alarm indicator light and a buzzer. In other examples, the alarm component can also be a signal transmitting device that can be connected to a mobile phone or a computer, and can communicate with the mobile phone or computer to implement an alarm function.

Specifically, when the temperature difference between the installation positions of two thermal resistors is greater than 10°C, the data analysis module transmits an alarm signal to the protection relay, the protection relay controls the alarm indicator to light up, and the buzzer emits a buzzer alarm to remind The operator's ash tank is blocked for timely disposal.

Example

As shown in Figure 1 and Figure 2, the utility model provides a thermal power plant ash tank ash blocking alarm identification system, the system includes:

The temperature measuring mechanism 1 is arranged on the outside of the ash tank 2, and includes a plurality of thermal resistances 3. The thermal resistances 3 are wound around the outer wall of the ash tank 2 in a ring shape. The annular thermal resistances 3 are evenly distributed along the vertical direction. The strip thermal resistance 3 is electrically connected with the temperature measuring instrument 4;

The controller 5 is electrically connected to the output end of the temperature measuring instrument 4, and the controller 5 includes a data acquisition module 6 for collecting the temperature data measured by the temperature measuring instrument 4, and a data analysis module 7 for analyzing the ash tank 2 Check whether the temperature difference between sections at different heights is normal. When the temperature difference is greater than the normal temperature difference, an alarm signal will be issued.

In this embodiment, the thermal resistor 3 is attached to the outer wall of the ash tank through thermally conductive silicone grease.

In this embodiment, the thermal resistance 3 is wound with a thermal insulation tape 8 outside.

In the present embodiment, the material of the heat insulating tape 8 is nylon tape.

In this embodiment, the temperature measuring instrument 4 is a multi-channel temperature measuring instrument, and each thermal resistance 3 is connected to a temperature measuring channel.

In this embodiment, the data analysis module 7 includes a temperature difference calculation unit 9 and a temperature difference comparison unit 10 .

In this embodiment, the output terminal of the data analysis module 7 is electrically connected with a protection relay 11 .

In this embodiment, the protection relay 11 is electrically connected with an alarm component 12 .

In this embodiment, the alarm assembly includes an alarm indicator light 13 and a buzzer 14 .

To sum up, when the thermal power plant ash tank ash blocking alarm identification system provided by the utility model is used, the identification system is activated, and the temperature measuring instrument 4 passes through a plurality of annular rings evenly distributed on the outer wall of the ash tank 2 in the vertical direction. The thermal resistance 3 monitors the temperature values at different height sections of the outer wall of the ash tank 2 respectively; the data acquisition module 6 collects the temperature value data on the different height sections of the outer wall of the ash tank 2 measured in the temperature measuring instrument 4, and calculates the temperature. The value data is sent to the data analysis module 7 for analysis; the data analysis module 7 calculates the temperature difference value between the different height sections of the outer wall of the ash tank 2 through its internal temperature difference calculation unit 9, and sends the temperature difference value to the temperature difference comparison unit. 10; the temperature difference comparison unit 10 compares the temperature difference between the cross-sections at different heights of the outer wall of the ash tank 2 with the standard temperature difference value to determine whether the inside of the ash tank 2 is blocked. When the calculated temperature difference value is greater than 10 ℃, the data analysis module sends The alarm signal is sent to the protection relay; when the protection relay 11 receives the alarm signal, it controls the alarm indicator 13 to light up, and at the same time the buzzer 14 issues a buzzer warning to remind the operator that the ash tank is blocked. The installation position of the resistor 3 can determine the ash blocking position.

Various embodiments of the present invention have been described above, and the foregoing descriptions are exemplary, not exhaustive, and not limiting of the disclosed embodiments. Numerous modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims (9)

1. a thermal power plant ash tank ash blocking alarm identification system, is characterized in that, this system comprises: The temperature measuring mechanism is arranged on the outside of the ash tank and includes a plurality of thermal resistances, which are wound on the outer wall of the ash tank in a ring shape, and the ring thermal resistances are evenly distributed in the vertical direction. electrical connection; The controller is electrically connected to the output end of the temperature measuring instrument, and the controller includes a data acquisition module for collecting temperature data measured by the temperature measuring instrument, and a data analysis module for analyzing whether the temperature difference values of the sections at different heights of the ash tank are normal , when the temperature difference is greater than the normal temperature difference, an alarm signal is issued. 2 . The ash blocking alarm and identification system for a thermal power plant ash tank according to claim 1 , wherein the thermal resistance is attached to the outer wall of the ash tank through thermal conductive silicone grease. 3 . 3 . A thermal power plant ash tank ash blocking alarm identification system according to claim 2 , wherein the thermal resistance is wound with a thermal insulation tape on the outside. 4 . 4. A thermal power plant ash tank ash blocking alarm identification system according to claim 3, characterized in that, the material of the thermal insulation tape is nylon tape. 5. A thermal power plant ash tank ash blocking alarm identification system according to claim 1, wherein the temperature measuring instrument is a multi-channel temperature measuring instrument, and each thermal resistance is connected to a temperature measuring channel. 6. A thermal power plant ash tank ash blocking alarm identification system according to claim 1, wherein the data analysis module comprises a temperature difference calculation unit and a temperature difference comparison unit. 7. A thermal power plant ash tank ash blocking alarm identification system according to claim 1, wherein the output end of the data analysis module is electrically connected with a protection relay. 8 . The ash blocking alarm and identification system for a thermal power plant ash tank according to claim 7 , wherein the protection relay is electrically connected with an alarm component. 9 . 9. A thermal power plant ash tank ash blocking alarm identification system according to claim 8, characterized in that, the alarm assembly comprises an alarm indicator light and a buzzer.

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