Multiple electrical safety control protection system of rotary RTO

Abstract

The utility model relates to a multiple electrical safety control protection system of a rotary RTO, which comprises an electrical control system, an inlet temperature transmitter, an outlet temperature transmitter, a hearth temperature transmitter, a combustible gas concentration monitor, a differential pressure transducer, an LEL concentration detection device, a pressure transmitter, a fresh air valve and an emergency discharge three-way valve, the induction end of the hearth temperature transmitter is arranged in a hearth of the rotating RTO, the combustible gas concentration monitor is arranged on one side of a combustion pipeline of a furnace body of the rotating RTO, the pressure difference sensor is arranged between an air inlet and an air outlet of the rotating RTO, the LEL concentration detection device is arranged at the front end of the air inlet of the rotating RTO, and the combustion pipeline is arranged at the front end of the combustion pipeline of the rotating RTO. The pressure transmission is arranged in front of the main fan, the fresh air valve and the emergency discharge three-way valve are connected in parallel in front of the pressure transmission, and the multiple electrical safety control protection system of the rotary RTO is high in intelligent degree, high in safety and high in reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment electrical control, in particular to a multiple electrical safety control and protection system for a rotary RTO. Background Art

[0002] Organic waste gas VOCS is a flammable and explosive gas, so you need to be extra careful when handling it.

[0003] The rotary RTO is the core equipment of the organic waste gas treatment system. The level of RTO safety performance indicators directly determines the strength of the system safety. Therefore, the safety of the RTO thermal incinerator itself must be taken seriously. In order to monitor the operating status of the rotary RTO, sensors are usually installed on the rotary RTO structure. The electrical control system pre-processes, analyzes, and predicts the data, realizing real-time monitoring of the equipment data.

[0004] The power control system used to monitor the rotating RTO in the prior art usually only has simple temperature sensors or pressure sensors installed in the rotating RTO. The monitoring means are single and there is a lack of intervention means, resulting in a low safety factor. Utility Model Content

[0005] The purpose of the utility model is to provide a multiple electrical safety control and protection system for a rotating RTO with high intelligence, strong safety and high reliability in view of the defects of the prior art.

[0006] The utility model is realized through the following technical scheme: a multiple electrical safety control and protection system of a rotary RTO, which combines temperature control, pressure control, combustion control and fan control in order to realize real-time monitoring and interlocking of key parameters of equipment and facilities. The system includes an electrical control system, an inlet temperature transmitter, an outlet temperature transmitter, a furnace temperature transmitter, a combustible gas concentration monitor, a differential pressure sensor, an LEL concentration detection device, a pressure transmitter, a fresh air valve and an emergency discharge three-way valve.

[0007] The electrical control system serves as the main control center and is used in conjunction with the following sensors to collect information such as pressure, temperature and concentration. After PLC calculation and processing, it completes the logical control of the safety control system and simulates the speed of the main fan. At the same time, it judges the operating status of the main fan in combination with the pressure value.

[0008] In order to monitor the inlet and outlet temperatures and pressure differences of the rotating RTO and to determine the working condition of the ceramic heat storage body and output an alarm, the inlet temperature transmitter and the outlet temperature transmitter are respectively arranged at the air inlet and outlet of the rotating RTO to monitor the inlet and outlet temperatures of the rotating RTO. The pressure difference sensor is arranged between the air inlet and outlet of the rotating RTO to monitor the pressure difference of the inlet and outlet of the rotating RTO.

[0009] The sensing end of the furnace temperature transmitter is arranged in the furnace of the rotating RTO, and is used to monitor the furnace temperature of the rotating RTO in real time. Preferably, there are two furnace temperature transmitters. This redundant arrangement can realize mutual comparison and judgment of monitoring data, reduce the temperature control over-limit problem caused by damage to the temperature transmitter, and improve the accuracy of the monitoring results.

[0010] The combustible gas concentration monitor is arranged on one side of the combustion pipeline of the rotary RTO furnace body, and is used to monitor the combustible gas concentration to determine whether there is a leak, and to give an alarm and shut down the machine in time.

[0011] The LEL concentration detection device is arranged at the front end of the air inlet of the rotating RTO and is located between the main fan and the inlet temperature transmitter to realize real-time monitoring of the concentration of organic waste gas, thereby strictly controlling the concentration of organic matter entering the rotating RTO.

[0012] The pressure transmission is arranged in front of the main blower and is used to monitor the inlet pressure of the rotary RTO in real time.

[0013] The fresh air valve and emergency exhaust three-way valve are connected in parallel before the pressure transmission. The emergency exhaust three-way valve enables emergency exhaust in the event of a rotary RTO failure or maintenance shutdown. The fresh air valve has two main functions: it automatically opens to dilute the organic waste gas concentration when it detects high organic waste gas concentrations; and it replenishes fresh air to clear residual organic waste gas and fuel in the furnace before the rotary RTO ignites.

[0014] In order to better protect the furnace and ensure the stable operation of the rotary RTO, the multiple electrical safety control protection system of the rotary RTO also includes a high-temperature bypass valve. The high-temperature bypass valve is arranged at the bypass outlet of the rotary RTO, and its control signal is linked to the furnace temperature. When the temperature is too high, the high-temperature bypass valve will automatically open to release excess heat, thereby protecting the furnace.

[0015] The beneficial effects of the present invention are as follows: the multiple electrical safety control and protection system of the rotating RTO realizes real-time monitoring of the data of the rotating RTO and the combination of temperature control, pressure control, combustion control and fan control by designing an electrical control system in conjunction with temperature and pressure transmitters, combustible gas concentration monitors, differential pressure sensors, LEL concentration detection devices, fresh air valves and emergency discharge three-way valves, sets up multiple lines of defense to avoid potential safety hazards and reduce the probability of safety accidents; at the same time, it also allows the status of the equipment to be presented at any time, and performs graded alarms for the results of the data, predicts possible failures in advance, realizes intelligent control, and improves the safety and stability of the rotating RTO system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the multiple electrical safety control and protection system of the rotary RTO of the present invention;

[0017] In the figure: 1. Emergency discharge three-way valve; 2. Fresh air valve; 3. Pressure transmitter; 4. Main fan; 5. LEL concentration detection device; 6. Inlet temperature transmitter; 7. Combustible gas concentration monitor; 8. High-temperature bypass valve; 9. First furnace temperature transmitter; 10. Second furnace temperature transmitter; 11. Outlet temperature transmitter; 12. Differential pressure sensor; 13. Electrical control system; 14. Rotary RTO; 15. Chimney. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0019] like Figure 1 The multiple electrical safety control and protection system of a rotary RTO shown in the figure includes an electrical control system 13, an inlet temperature transmitter 6, an outlet temperature transmitter 11, a first furnace temperature transmitter 9, a second furnace temperature transmitter 10, a combustible gas concentration monitor 7, a pressure differential sensor 12, an LEL concentration detection device 5, a pressure transmitter 3, a fresh air valve 2, an emergency discharge three-way valve 1, and a high-temperature bypass valve 8. The inlet temperature transmitter 6 and the outlet temperature transmitter 11 are respectively arranged at the air inlet and the air outlet of the rotary RTO 14, and the first furnace temperature transmitter 9 and the second furnace temperature transmitter 10 are respectively arranged at the air inlet and the air outlet of the rotary RTO 14. 0 is arranged in the furnace of the rotating RTO14, the combustible gas concentration monitor 7 is arranged on the side of the combustion pipeline of the furnace body of the rotating RTO14, the pressure difference sensor 12 is arranged between the air inlet and the air outlet of the rotating RTO14, the LEL concentration detection device 5 is arranged at the front end of the air inlet of the rotating RTO14 and is located between the main fan 4 and the inlet temperature transmitter 6, the pressure transmission 3 is arranged in front of the main fan 4, the fresh air valve 2 and the emergency discharge three-way valve 1 are connected in parallel in front of the pressure transmission 3, and the high-temperature bypass valve 8 is arranged at the bypass outlet of the rotating RTO14.

[0020] The working principle of the multiple electrical safety control protection system of the rotary RTO is as follows:

[0021] An LEL concentration detection device 5 is provided with an online detection and alarm interlock device, and its signal is connected to the electrical control system 13 to display the concentration of VOC at the air inlet. When the VOC concentration in the gas is higher than a certain set value, the electrical control system 13 immediately issues an alarm to remind the operator to check the equipment; a combustible gas concentration monitor 7 is provided on one side of the furnace combustion pipeline of the rotating RTO 14 to monitor the combustible gas, and to alarm and control when the fuel leaks, and its signal enters the electrical control system 13; the inlet temperature transmitter 6 at the air inlet, the outlet temperature transmitter 11 at the air outlet, and the pressure difference sensor 12 connected to the air inlet and the air outlet respectively monitor the inlet and outlet temperatures and pressure differences of the rotating RTO to judge the working condition of the ceramic heat storage body and the alarm output, and its signal enters the electrical control system 13.

[0022] The pressure transmitter 3 is set to monitor the inlet pressure of the rotating RTO 14 in real time, and the electrical control system 13 performs analog control on the speed of the main fan 4, and at the same time judges the operating status of the main fan 4 based on the pressure value; the first furnace temperature transmitter 9 and the second furnace temperature transmitter 10 are set in the furnace of the rotating RTO 14, monitor the temperature in the furnace and compare and judge the monitoring data with each other, and feed back the comprehensive data to the electrical control system 13.

[0023] The high-temperature bypass valve 8, located at the bypass outlet of the rotary RTO 14, has its control signal linked to the furnace temperature. When the temperature is too high, the high-temperature bypass valve 8 will automatically open to release excess heat and protect the furnace. The fresh air valve 2 will automatically open to dilute the exhaust gas concentration. At the same time, the fresh air valve 2 can also replenish fresh air to clean the residual organic waste gas and fuel in the furnace before the rotary RTO 14 is ignited. The emergency discharge three-way valve 1 is set to enable emergency discharge when the rotary RTO 14 fails or is shut down for maintenance. The switching status of the above-mentioned high-temperature bypass valve 8, fresh air valve 2, and emergency discharge three-way valve 1 are uploaded to the electrical control system 13, and the opening is controlled by the electrical control system 13.

[0024] The electrical control system 13 analyzes and predicts the data fed back by all the above-mentioned sensors and other electrical components, predicts possible failures in advance, and realizes intelligent logical control. At the same time, it cooperates with the above-mentioned valves to perform preprocessing, set up multiple lines of defense to avoid safety hazards, and reduce the probability of safety accidents.

[0025] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not limiting, and thus other examples of the exemplary embodiments may have different values.

[0026] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A multi-electrical safety control and protection system for a rotating RTO, characterized by: It includes an electrical control system, an inlet temperature transmitter, an outlet temperature transmitter, a furnace temperature transmitter, a combustible gas concentration monitor, a pressure differential sensor, an LEL concentration detection device, a pressure transmitter, a fresh air valve and an emergency discharge three-way valve. The inlet temperature transmitter and the outlet temperature transmitter are respectively arranged at the air inlet and air outlet of the rotating RTO, the sensing end of the furnace temperature transmitter is arranged in the furnace of the rotating RTO, the combustible gas concentration monitor is arranged on one side of the combustion pipeline of the furnace body of the rotating RTO, the pressure differential sensor is arranged between the air inlet and air outlet of the rotating RTO, the LEL concentration detection device is arranged at the front end of the air inlet of the rotating RTO and is located between the main fan and the inlet temperature transmitter, the pressure transmission is arranged in front of the main fan, and the fresh air valve and the emergency discharge three-way valve are connected in parallel in front of the pressure transmission.

2. The multiple electrical safety control and protection system for a rotary RTO according to claim 1, characterized in that: The invention also includes a high-temperature bypass valve, which is arranged at a bypass outlet of the rotary RTO.

3. The multiple electrical safety control and protection system for a rotary RTO according to claim 1, characterized in that: There are two furnace temperature transmitters, namely a first furnace temperature transmitter and a second furnace temperature transmitter.

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