External-force-driving-free automatic temperature control explosion-proof device and method

Abstract

The invention provides an automatic temperature control explosion-proof device and method without external force driving, and the device comprises a first main pipeline, a second main pipeline which is connected in series with the first main pipeline and is communicated with the first main pipeline, and a remote control integrated circuit board which is used for detecting the operation states of the first main pipeline and the second main pipeline. The first main pipeline and the second main pipeline are connected to a steam pipeline in series, a first check valve and a pressure reducing valve are sequentially connected to the first main pipeline in series, two first auxiliary pipelines communicated with the first main pipeline are arranged between the first check valve and the first main pipeline, a pressure release valve is installed in one auxiliary pipeline, and a pressure reducing valve is installed in the other auxiliary pipeline. A first electric ball valve and a first manual ball valve are installed in the other auxiliary pipeline, the first electric ball valve and the first manual ball valve are connected in parallel in the auxiliary pipeline, temperature and pressure changes in the pipeline can be monitored in real time through a pressure sensor, a thermometer and an electric actuator, and when the temperature and the pressure exceed set values, the first electric ball valve and the first manual ball valve are switched off. And a response is quickly made to carry out pressure reduction and temperature reduction treatment.

Description

Technical Field

[0001] The present invention relates to an automatic temperature control and explosion-proof device without external force driving and a method thereof, in particular to the technical field of steam pipelines. Background Art

[0002] The advancement of industrial automation and intelligentization has placed higher demands on the safety and stability of steam piping systems. In many industrial production processes, steam serves as a critical energy carrier, and precise control of its temperature and pressure is crucial not only to production efficiency but also to safety. Traditional steam piping systems often rely on manual operation and simple mechanical devices to regulate temperature and pressure, resulting in slow response, low accuracy, and poor safety. This is particularly true in flammable and explosive environments, where overpressure or overtemperature can lead to serious safety incidents.

[0003] Existing temperature control and explosion-proof devices have deficiencies in their multiple protection mechanisms. Once a component fails, the entire system may lose its protection function, increasing safety risks. The components of the temperature control and explosion-proof devices work independently, with low integration and poor coordination, making it difficult to form a unified control system, which in turn affects overall performance. Traditional devices lack real-time monitoring and intelligent feedback control functions, and are unable to dynamically adjust control strategies according to the actual conditions in the pipeline, resulting in poor control effects. In addition, they lack remote monitoring and control functions, making it impossible to achieve real-time data transmission and remote operation, affecting the system's intelligent management level. Summary of the Invention

[0004] Purpose of the invention: One purpose is to propose an automatic temperature control and explosion-proof device without external force drive to solve the above-mentioned problems existing in the prior art; a further purpose is to propose a method for realizing the above-mentioned device.

[0005] Technical solution: An automatic temperature control and explosion-proof device without external force drive, including:

[0006] a first main pipeline, a second main pipeline connected in series with the first main pipeline and interconnected, a remote control integrated circuit board for detecting the operating status of the first main pipeline and the second main pipeline, the first main pipeline and the second main pipeline being connected in series to a steam pipeline, a first check valve and a pressure reducing valve being connected in series to the first main pipeline in sequence, two first auxiliary pipelines connected to the first main pipeline are provided between the first check valve and the first main pipeline, one of the auxiliary pipelines being installed with a pressure relief valve, and the other auxiliary pipeline being installed with a first electric ball valve and a first manual ball valve, the first electric ball valve and the first manual ball valve being connected in parallel in the auxiliary pipelines,

[0007] The second main pipeline is connected to the pressure reducing valve, and the second main pipeline is provided with a desuperheater, a pressure gauge, a safety valve, a temperature gauge, a thermometer, a pressure transmitter and a temperature control valve in sequence; two second auxiliary pipelines connected to the second main pipeline are provided between the pressure transmitter and the temperature control valve, one of the auxiliary pipelines is provided with a third electric ball valve, and the other auxiliary pipeline is provided with a second manual ball valve and a second electric ball valve, and the second electric ball valve and the second manual ball valve are connected in parallel in the auxiliary pipeline.

[0008] A second check valve, a filter and a stop valve are sequentially connected in series between the desuperheater and the cold water input end.

[0009] In a further embodiment, an electromagnetic switch is further provided in the safety valve, a pressure sensor is further provided in the pressure relief valve, and a positioner and an electric actuator for driving the positioner to move are further provided in the desuperheater.

[0010] In a further embodiment, the pressure relief valve, pressure transmitter, pressure reducing valve, temperature reducer, temperature control valve, safety valve, first electric ball valve, second electric ball valve, third electric ball valve and thermometer are all electrically connected to the remote control integrated circuit board.

[0011] In a further embodiment, the remote control integrated circuit board includes a signal receiving module for obtaining remote control signals, a signal sending module for remotely sending detection signals, a data comparison module for controlling the pressure in the main pipeline, a delay module for delay control operation, and a temperature control module for controlling the temperature in the main pipeline.

[0012] In a further embodiment, the signal receiving module includes a processor U1, a diode D1, a resistor R1, an oscillator X2, a resistor R8, a transistor Q4, an inductor L1 and a capacitor C4, the negative end of the diode D1 is connected to one end of the resistor R1 and the pin 26 of the processor U1, the positive end of the diode D1 is connected to the other end of the resistor R1, one end of the resistor R8 and the base end of the transistor Q4, the other end of the resistor R8 is connected to one end of the oscillator X2 and the pin 1 of the inductor L1, the other end of the oscillator X2 is connected to the emitter end of the transistor Q4 and the ground GND, the collector end of the transistor Q4 is connected to the pin 3 of the inductor L1 and one end of the capacitor C4, the other end of the capacitor C4 is connected to the antenna Y, and the pin 2 of the inductor L1 is connected to the input power supply +6V.

[0013] In a further embodiment, the signal sending module includes a transistor Q3, an oscillator X1, a resistor R5, a capacitor C3 and a capacitor C2, the base end of the transistor Q3 is connected to one end of the oscillator X1 and the pin 13 of the processor U1, the emitter end of the transistor Q3 is connected to one end of the resistor R5, one end of the capacitor C3 and one end of the capacitor C2, the other end of the capacitor C2 is connected to the collector end of the transistor Q3 and the input power supply +6V, and the other end of the capacitor C3 is connected to the ground wire GND, the other end of the resistor R5 and the other end of the oscillator X1.

[0014] In a further embodiment, the data comparison module includes a resistor R2, a comparator U2 and an indicator light L2, the processor U1 pin 10 is connected to the comparator U2 pin 3, the negative end of the indicator light L2 and the positive end of the safety valve electromagnetic switch, the processor U1 pin 16 is connected to the pressure sensor of the pressure relief valve, the comparator U2 pin 1 and one end of the resistor R2, the other end of the resistor R2 is connected to the processor U1 pin 34 and the comparator U2 pin 4, the comparator U2 pin 2 is connected to the pressure transmitter, the input power supply +6V and the processor U1 pin 29, and the comparator U2 pin 5 is connected to the positive end of the indicator light L2 and the negative end of the safety valve electromagnetic switch.

[0015] In a further embodiment, the delay module includes a delayer U3, a transistor Q4, a resistor R3, a capacitor C1, a resistor R4, a relay switch S1, a diode D2 and a diode D3, the base end of the transistor Q4 is connected to the positive end of the indicator light L2, the collector end of the transistor Q4 is connected to the other end of the resistor R1, the emitter end of the transistor Q4 is connected to the pin 1 of the relay switch S1, one end of the resistor R3 and the pin 8 of the delayer U3, the other end of the resistor R3 is connected to one end of the capacitor C1, the pin 6 and pin 7 of the delayer U3, the other end of the capacitor C1 is connected to the pin 4 of the relay switch S1, the ground wire GND and one end of the resistor R4, The other end of the resistor R4 is connected to pin 1 of the delay device U3, pin 4 of the delay device U3 is connected to pin 41 of the processor U1, and pin 5 of the delay device U3 is connected to pin 6 of the processor U1; pin 2 of the delay device U3 is connected to pin 3 of the relay switch S1, pin 2 of the relay switch S1 is connected to the positive end of the diode D2, and the negative end of the diode D2 is connected to the negative end of the diode D3, the positive power supply end of the first electric ball valve, the second electric ball valve and the third electric ball valve, the negative power supply end of the first electric ball valve, the second electric ball valve and the third electric ball valve is connected to the ground wire GND, and the positive end of the diode D3 is connected to pin 3 of the delay device U3.

[0016] In a further embodiment, the temperature control module includes a resistor R6, a transistor Q1, a potentiometer TR, a resistor R7 and a transistor Q2, one end of the resistor R6 is connected to the positive terminal of the thermometer, the positive terminal of the electric actuator, the pin 2 of the inductor L1 and the input power supply +6V, the other end of the resistor R6 is connected to the collector terminal of the transistor Q1, the base terminal of the transistor Q1 is connected to one end of the resistor R7 and the pins 1 and 2 of the potentiometer TR, the other end of the resistor R7 is connected to the ground wire GND and the emitter terminal of the transistor Q2, the base terminal of the transistor Q2 is connected to the emitter terminal of the transistor Q1, the collector terminal of the transistor Q2 is connected to the negative terminal of the electric actuator, the pin 3 of the potentiometer TR is connected to the negative terminal of the thermometer, and the signal end of the thermometer is connected to the pin 5 of the processor U1.

[0017] In a further embodiment, the pressure reducing valve is a porous sleeve valve pressure reducing valve, the desuperheater is an integral atomizing desuperheater, the thermometer is a bimetallic thermometer, and the temperature control valve is a liquid level temperature control valve.

[0018] In a further embodiment, the processor U1 is of STM32F model, the comparator U2 is of LM339 model, the delay device U3 is of ME555 model, and the transistors Q1, Q2, Q3 and Q4 are all of NPN model.

[0019] A method for automatic temperature control and explosion prevention without external force driving is used to realize an automatic temperature control and explosion prevention device without external force driving, comprising:

[0020] When the pressure before the first check valve exceeds the pressure of the pressure relief valve, the pressure relief valve opens, and the processor U1 obtains the pressure sensor and pressure transmitter signals in the pressure relief valve and feeds them back to the comparator U2 for comparison.

[0021] When the voltage signal compared by the comparator U2 does not exceed the set value, it is determined that the pressure difference between the input end and the output end of the main pipeline is within the set range;

[0022] When the voltage signal compared by the comparator U2 exceeds the set value, it is determined that the pressure difference between the input and output ends of the main pipeline is beyond the set range. At this time, the comparator U2 is turned on, controlling the electromagnetic switch in the safety valve to operate, thereby reducing the pressure difference in the main pipeline. After the electromagnetic switch operates, the transistor Q4 is triggered to conduct, and the delay device U3 is started to run. During the delay time, if the pressure difference returns to the set value, the electromagnetic switch loses power, and the pressure relief is completed. If the pressure difference does not return to the set value, the delay device U3 controls the relay switch S1 to close, and at this time controls the opening of the first electric ball valve, the second electric ball valve and the third electric ball valve, thereby ensuring the safety of the main pipeline.

[0023] When there is condensed water in the main pipeline, the first manual ball valve or the second manual ball valve can be opened;

[0024] When the thermometer senses that the steam temperature in the main pipeline is higher than the set value, the processor U1 receives an early warning signal and controls the thermometer to send a command to the transistor Q1, turning on the transistor Q2, and running the electric actuator to adjust the position of the positioner in the desuperheater. Then, the flow rate of the desuperheater atomizing nozzle is adjusted according to the temperature change to adjust the temperature of the steam in the main pipeline.

[0025] When the thermometer senses that the steam temperature in the main pipeline is higher than the set value and the desuperheater is ineffective, the processor U1 controls the opening of the second and third electric ball valves through the delay device U3, and the liquid level of the temperature control valve rises and opens to cool down.

[0026] When the pressure behind the first check valve exceeds the pressure of the pressure relief valve, the safety valve opens;

[0027] When the remote control integrated circuit board is abnormal, the pressure relief valve will automatically become unstable and release pressure after the pressure rises to the set value, and the temperature control valve will open and release pressure after the temperature rises to the set value.

[0028] Beneficial effects: The present invention proposes an automatic temperature control and explosion-proof device and method without external force drive. Through pressure sensors, thermometers and electric actuators, the temperature and pressure changes in the pipeline can be monitored in real time. When the temperature and pressure exceed the set values, the first main pipeline and the second main pipeline are quickly responded to by reducing the pressure and temperature. The data comparison module can compare the sensor data with the preset value in real time, and the temperature control module accurately controls the opening and closing status of each valve according to the comparison result. By setting up multi-stage pressure and temperature control devices (such as a first check valve, a pressure reducing valve, a pressure relief valve, a safety valve, a temperature reducer, and a temperature control valve), a multiple protection mechanism is formed. Even if a component fails, the other components can continue to work, ensuring the safe operation of the system.

[0029] Automated intelligent control is achieved through the integrated signal receiving module, signal sending module, data comparison module, delay module and temperature control module. In addition to mechanical opening, the safety valve is also equipped with an electromagnetic switch to achieve dual protection. The electromagnetic switch can respond quickly in a short time and quickly reduce the system pressure. The desuperheater sprays cold water evenly into the steam through an atomizing nozzle to quickly reduce the steam temperature. The built-in positioner and electric actuator can accurately adjust the nozzle flow according to temperature changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the main pipeline structure of the present invention.

[0031] Figure 2 This is a diagram of the remote control integrated circuit of the present invention.

[0032] The accompanying drawings are marked as follows: 1. stop valve; 2. filter; 3. second check valve; 4. desuperheater; 5. pressure reducing valve; 6. safety valve; 7. pressure gauge; 8. thermometer; 9. first check valve; 10. pressure relief valve; 11. first electric ball valve; 12. first manual ball valve; 13. second manual ball valve; 14. second electric ball valve; 15. temperature control valve; 16. third electric ball valve; 17. thermometer; 18. pressure transmitter. DETAILED DESCRIPTION

[0033] The applicant believes that the existing temperature control and explosion-proof devices have deficiencies in their multiple protection mechanisms. Once a component fails, the entire system may lose its protection function, increasing safety risks. The components of the temperature control and explosion-proof devices work independently, with low integration and poor coordination, making it difficult to form a unified control system, which in turn affects the overall performance.

[0034] In order to solve the problems existing in the prior art, the present invention realizes dual protection of the main pipeline based on electrical control and mechanical control through an automatic temperature control and explosion-proof device and method without external force drive.

[0035] The present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0036] In this application, we propose a non-external force driven automatic temperature control and explosion-proof device and method, which includes a non-external force driven automatic temperature control and explosion-proof device, including:

[0037] a first main pipeline, a second main pipeline connected in series with the first main pipeline and interconnected, and a remote control integrated circuit board for detecting the operating status of the first and second main pipelines, the first and second main pipelines being connected in series to a steam pipeline, a first check valve 9 and a pressure reducing valve 5 being connected in series to the first main pipeline in sequence, two first auxiliary pipelines being provided between the first check valve 9 and the first main pipeline and communicating with the first main pipeline, one of the auxiliary pipelines being provided with a pressure relief valve 10, and the other auxiliary pipeline being provided with a first electric ball valve 11 and a first manual ball valve 12, the first electric ball valve and the first manual ball valve being connected in parallel in the auxiliary pipelines, and a pressure sensor being further provided in the pressure relief valve 10;

[0038] The second main pipeline is connected to the pressure reducing valve 5, and the second main pipeline is sequentially provided with a desuperheater 4, a pressure gauge 7, a safety valve 6, a thermometer 8, a thermometer 17, a pressure transmitter 18 and a temperature control valve 15; two second sub-pipelines connected to the second main pipeline are provided between the pressure transmitter 18 and the temperature control valve 15, one of the sub-pipes is installed with a third electric ball valve 16, and the other sub-pipe is installed with a second manual ball valve 13 and a second electric ball valve 14, the second electric ball valve and the second manual ball valve are connected in parallel in the sub-pipes, an electromagnetic switch is also provided in the safety valve 6, and a positioner and an electric actuator for driving the positioner to move are also provided in the desuperheater 4.

[0039] The pressure relief valve 10, pressure transmitter 18, pressure reducing valve 5, desuperheater 4, temperature control valve 15, safety valve 6, first electric ball valve 11, second electric ball valve 14, third electric ball valve 16 and thermometer 17 are all electrically connected to the remote control integrated circuit board.

[0040] A second check valve 3 , a filter 2 and a stop valve 1 are sequentially connected in series between the desuperheater 4 and the cold water input end.

[0041] The remote control integrated circuit board includes a signal receiving module for acquiring a remote control signal. The signal receiving module includes a processor U1, a diode D1, a resistor R1, an oscillator X2, a resistor R8, a transistor Q4, an inductor L1 and a capacitor C4.

[0042] The negative terminal of the diode D1 is connected to one end of the resistor R1 and the pin 26 of the processor U1, the positive terminal of the diode D1 is connected to the other end of the resistor R1, one end of the resistor R8 and the base terminal of the transistor Q4, the other end of the resistor R8 is connected to one end of the oscillator X2 and the pin 1 of the inductor L1, the other end of the oscillator X2 is connected to the emitter terminal of the transistor Q4 and the ground wire GND, the collector terminal of the transistor Q4 is connected to the pin 3 of the inductor L1 and one end of the capacitor C4, the other end of the capacitor C4 is connected to the antenna Y, and the pin 2 of the inductor L1 is connected to the input power supply +6V.

[0043] A signal sending module for remotely sending a detection signal includes a transistor Q3, an oscillator X1, a resistor R5, a capacitor C3, and a capacitor C2.

[0044] The base end of the transistor Q3 is connected to one end of the oscillator X1 and the pin 13 of the processor U1, the emitter end of the transistor Q3 is connected to one end of the resistor R5, one end of the capacitor C3 and one end of the capacitor C2, the other end of the capacitor C2 is connected to the collector end of the transistor Q3 and the input power supply +6V, and the other end of the capacitor C3 is connected to the ground wire GND, the other end of the resistor R5 and the other end of the oscillator X1.

[0045] A data comparison module for controlling the pressure in the main pipeline includes a resistor R2, a comparator U2 and an indicator light L2.

[0046] The processor U1 pin 10 is connected to the comparator U2 pin 3, the negative end of the indicator light L2 and the positive end of the electromagnetic switch of the safety valve 6. The processor U1 pin 16 is connected to the pressure sensor of the pressure relief valve 10, the comparator U2 pin 1 and one end of the resistor R2. The other end of the resistor R2 is connected to the processor U1 pin 34 and the comparator U2 pin 4. The comparator U2 pin 2 is connected to the pressure transmitter 18, the input power supply +6V and the processor U1 pin 29. The comparator U2 pin 5 is connected to the positive end of the indicator light L2 and the negative end of the electromagnetic switch of the safety valve 6.

[0047] A delay module for delay control operation includes a delay device U3, a transistor Q4, a resistor R3, a capacitor C1, a resistor R4, a relay switch S1, a diode D2 and a diode D3.

[0048] The base end of the transistor Q4 is connected to the positive end of the indicator light L2, the collector end of the transistor Q4 is connected to the other end of the resistor R1, the emitter end of the transistor Q4 is connected to pin 1 of the relay switch S1, one end of the resistor R3 and pin 8 of the delay device U3, the other end of the resistor R3 is connected to one end of the capacitor C1, pin 6 and pin 7 of the delay device U3, the other end of the capacitor C1 is connected to pin 4 of the relay switch S1, the ground wire GND and one end of the resistor R4, the other end of the resistor R4 is connected to pin 1 of the delay device U3, and pin 4 of the delay device U3 is connected to pin 1 of the processor U1. 41 is connected, the pin 5 of the timer U3 is connected to the pin 6 of the processor U1; the pin 2 of the timer U3 is connected to the pin 3 of the relay switch S1, the pin 2 of the relay switch S1 is connected to the positive end of the diode D2, the negative end of the diode D2 is connected to the negative end of the diode D3, the positive power supply end of the first electric ball valve 11, the second electric ball valve 14 and the third electric ball valve 16, the negative power supply end of the first electric ball valve 11, the second electric ball valve 14 and the third electric ball valve 16 is connected to the ground wire GND, and the positive end of the diode D3 is connected to the pin 3 of the timer U3.

[0049] A temperature control module is used to control the temperature inside the main pipe, and the temperature control module includes a resistor R6, a transistor Q1, a potentiometer TR, a resistor R7 and a transistor Q2.

[0050] One end of the resistor R6 is connected to the positive terminal of the thermometer 17, the positive terminal of the electric actuator, the pin 2 of the inductor L1 and the input power supply +6V, the other end of the resistor R6 is connected to the collector terminal of the transistor Q1, the base terminal of the transistor Q1 is connected to one end of the resistor R7 and the pins 1 and 2 of the potentiometer TR, the other end of the resistor R7 is connected to the ground wire GND and the emitter terminal of the transistor Q2, the base terminal of the transistor Q2 is connected to the emitter terminal of the transistor Q1, the collector terminal of the transistor Q2 is connected to the negative terminal of the electric actuator, the pin 3 of the potentiometer TR is connected to the negative terminal of the thermometer 17, and the signal end of the thermometer 17 is connected to the pin 5 of the processor U1.

[0051] A method for automatic temperature control and explosion prevention without external force driving is used to realize the above-mentioned automatic temperature control and explosion prevention device without external force driving, comprising:

[0052] When the pressure before the first check valve 9 exceeds the pressure of the pressure relief valve 10, the pressure relief valve 10 opens, and the processor U1 obtains the pressure sensor and pressure transmitter 18 signals in the pressure relief valve 10 and feeds them back to the comparator U2 for comparison.

[0053] When the voltage signal compared by the comparator U2 does not exceed the set value, it is determined that the pressure difference between the input end and the output end of the main pipeline is within the set range;

[0054] When the voltage signal compared by the comparator U2 exceeds the set value, it is determined that the pressure difference between the input and output ends of the main pipeline is beyond the set range. At this time, the comparator U2 is turned on, controlling the electromagnetic switch in the safety valve 6 to operate, thereby reducing the pressure difference in the main pipeline. After the electromagnetic switch operates, the transistor Q4 is triggered to conduct, and the delay device U3 is started to run. During the delay time, if the pressure difference returns to the set value, the electromagnetic switch loses power, and the pressure relief is completed. If the pressure difference does not return to the set value, the delay device U3 controls the relay switch S1 to close, and at this time controls the opening of the first electric ball valve 11, the second electric ball valve 14 and the third electric ball valve 16, thereby ensuring the safety of the main pipeline.

[0055] When there is condensed water in the main pipeline, the first manual ball valve 12 or the second manual ball valve 13 can be opened;

[0056] When the thermometer 17 senses that the steam temperature in the main pipeline is higher than the set value, the processor U1 obtains an early warning signal and controls the thermometer 17 to send an instruction to the transistor Q1, turning on the transistor Q2, and operating the electric actuator to adjust the position of the positioner in the desuperheater 4. Then, the flow rate of the atomizing nozzle of the desuperheater 4 is adjusted according to the temperature change to adjust the temperature of the steam in the main pipeline;

[0057] When the thermometer 17 senses that the steam temperature in the main pipeline is higher than the set value and the desuperheater 4 is ineffective in cooling, the processor U1 controls the opening of the second electric ball valve 14 and the third electric ball valve 16 through the delay device U3, and the liquid level of the temperature control valve 15 rises and opens to cool down.

[0058] When the pressure behind the first check valve 9 exceeds the pressure of the pressure relief valve 10, the safety valve 6 opens;

[0059] When the remote control integrated circuit board is abnormal, the pressure relief valve 10 will automatically lose stability and release pressure after the pressure rises to the set value, and the temperature control valve 15 will open and release pressure after the temperature rises to the set value.

[0060] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. An automatic temperature control explosion-proof device without external force drive, characterized in that: include: a first main pipeline, a second main pipeline connected in series with the first main pipeline and interconnected, and a remote control integrated circuit board for detecting the operating status of the first main pipeline and the second main pipeline, the first main pipeline and the second main pipeline are connected in series to a steam pipeline, a first check valve and a pressure reducing valve are connected in series to the first main pipeline in sequence, two first auxiliary pipelines connected to the first main pipeline are arranged between the first check valve and the first main pipeline, a pressure relief valve is installed in one of the auxiliary pipelines, a first electric ball valve and a first manual ball valve are installed in the other auxiliary pipeline, and the first electric ball valve and the first manual ball valve are connected in parallel in the auxiliary pipeline, The second main pipeline is communicated with the pressure reducing valve, and the second main pipeline is provided with a desuperheater, a pressure gauge, a safety valve, a temperature gauge, a thermometer, a pressure transmitter and a temperature control valve in sequence; two second secondary pipelines connected to the second main pipeline are provided between the pressure transmitter and the temperature control valve, one of the secondary pipelines is provided with a third electric ball valve, and the other secondary pipeline is provided with a second manual ball valve and a second electric ball valve, and the second electric ball valve and the second manual ball valve are connected in parallel in the secondary pipeline, A second check valve, a filter and a stop valve are sequentially connected in series between the desuperheater and the cold water input end.

2. The automatic temperature control explosion-proof device without external force drive according to claim 1 is characterized in that: An electromagnetic switch is also provided in the safety valve, and a pressure sensor is also provided in the pressure relief valve; a positioner and an electric actuator for driving the positioner to move are also provided in the desuperheater.

3. The automatic temperature control explosion-proof device without external force drive according to claim 1 is characterized in that: The pressure relief valve, pressure transmitter, pressure reducing valve, temperature reducer, temperature control valve, safety valve, first electric ball valve, second electric ball valve, third electric ball valve and thermometer are all electrically connected to the remote control integrated circuit board.

4. The automatic temperature control explosion-proof device without external force drive according to claim 1 is characterized in that: The remote control integrated circuit board includes a signal receiving module for acquiring remote control signals, a signal sending module for remotely sending detection signals, a data comparison module for controlling the pressure in the main pipeline, a delay module for delay control operation, and a temperature control module for controlling the temperature in the main pipe.

5. The automatic temperature control explosion-proof device without external force drive according to claim 4 is characterized in that: The signal receiving module includes a processor U1, a diode D1, a resistor R1, an oscillator X2, a resistor R8, a transistor Q4, an inductor L1 and a capacitor C4. The cathode end of the diode D1 is connected to one end of the resistor R1 and the pin 26 of the processor U1, the positive end of the diode D1 is connected to the other end of the resistor R1, one end of the resistor R8 and the base end of the transistor Q4, the other end of the resistor R8 is connected to one end of the oscillator X2 and the pin 1 of the inductor L1, the other end of the oscillator X2 is connected to the emitter end of the transistor Q4 and the ground wire GND, the collector end of the transistor Q4 is connected to the pin 3 of the inductor L1 and one end of the capacitor C4, the other end of the capacitor C4 is connected to the antenna Y, and the pin 2 of the inductor L1 is connected to the input power supply +6V.

6. The automatic temperature control explosion-proof device without external force drive according to claim 4 is characterized in that: The signal sending module includes a transistor Q3, an oscillator X1, a resistor R5, a capacitor C3 and a capacitor C2. The base end of the transistor Q3 is connected to one end of the oscillator X1 and the pin 13 of the processor U1. The emitter end of the transistor Q3 is connected to one end of the resistor R5, one end of the capacitor C3 and one end of the capacitor C2. The other end of the capacitor C2 is connected to the collector end of the transistor Q3 and the input power supply +6V. The other end of the capacitor C3 is connected to the ground wire GND, the other end of the resistor R5 and the other end of the oscillator X1.

7. The automatic temperature control explosion-proof device without external force drive according to claim 4 is characterized in that: The data comparison module includes a resistor R2, a comparator U2 and an indicator light L2. The processor U1 pin 10 is connected to the comparator U2 pin 3, the negative terminal of the indicator light L2 and the positive terminal of the safety valve electromagnetic switch. The processor U1 pin 16 is connected to the pressure sensor of the pressure relief valve, the comparator U2 pin 1 and one end of the resistor R2. The other end of the resistor R2 is connected to the processor U1 pin 34 and the comparator U2 pin 4. The comparator U2 pin 2 is connected to the pressure transmitter, the input power supply +6V and the processor U1 pin 29. The comparator U2 pin 5 is connected to the positive terminal of the indicator light L2 and the negative terminal of the safety valve electromagnetic switch.

8. The automatic temperature control explosion-proof device without external force drive according to claim 4 is characterized in that: The delay module includes a delayer U3, a transistor Q4, a resistor R3, a capacitor C1, a resistor R4, a relay switch S1, a diode D2 and a diode D3. The base end of the transistor Q4 is connected to the positive end of the indicator light L2, the collector end of the transistor Q4 is connected to one end of the resistor R2, the emitter end of the transistor Q4 is connected to pin 1 of the relay switch S1, one end of the resistor R3 and pin 8 of the delayer U3, the other end of the resistor R3 is connected to one end of the capacitor C1, pin 6 and pin 7 of the delayer U3, the other end of the capacitor C1 is connected to pin 4 of the relay switch S1, the ground wire GND and one end of the resistor R4, and the other end of the resistor R4 is connected to the ground wire GND and one end of the relay switch S1. One end is connected to pin 1 of the timer U3, pin 4 of the timer U3 is connected to pin 41 of the processor U1, and pin 5 of the timer U3 is connected to pin 6 of the processor U1; pin 2 of the timer U3 is connected to pin 3 of the relay switch S1, pin 2 of the relay switch S1 is connected to the positive terminal of the diode D2, the negative terminal of the diode D2 is connected to the negative terminal of the diode D3, the positive power supply terminal of the first electric ball valve, the second electric ball valve and the third electric ball valve, the negative power supply terminal of the first electric ball valve, the second electric ball valve and the third electric ball valve is connected to the ground wire GND, and the positive terminal of the diode D3 is connected to pin 3 of the timer U3.

9. The automatic temperature control explosion-proof device without external force drive according to claim 4, characterized in that: The temperature control module includes a resistor R6, a transistor Q1, a potentiometer TR, a resistor R7 and a transistor Q2. One end of the resistor R6 is connected to the positive end of the thermometer, the positive end of the electric actuator, the pin 2 of the inductor L1 and the input power supply +6V. The other end of the resistor R6 is connected to the collector end of the transistor Q1. The base end of the transistor Q1 is connected to one end of the resistor R7 and the pins 1 and 2 of the potentiometer TR. The other end of the resistor R7 is connected to the ground wire GND and the emitter end of the transistor Q2. The base end of the transistor Q2 is connected to the emitter end of the transistor Q1. The collector end of the transistor Q2 is connected to the negative end of the electric actuator. The pin 3 of the potentiometer TR is connected to the negative end of the thermometer. The signal end of the thermometer is connected to the pin 5 of the processor U1.

10. A method for automatic temperature control and explosion prevention without external force driving, used to realize the automatic temperature control and explosion prevention device without external force driving as described in any one of claims 1 to 9, characterized in that: include: When the pressure before the first check valve exceeds the pressure of the pressure relief valve, the pressure relief valve opens, and the processor U1 obtains the pressure sensor and pressure transmitter signals in the pressure relief valve, and feeds them back to the comparator U2 for comparison. When the voltage signal compared by the comparator U2 does not exceed the set value, it is determined that the pressure difference between the input end and the output end of the main pipeline is within the set range; When the voltage signal compared by the comparator U2 exceeds the set value, it is determined that the pressure difference between the input and output ends of the main pipeline is beyond the set range. At this time, the comparator U2 is turned on to control the electromagnetic switch in the safety valve to work, thereby reducing the pressure difference in the main pipeline. After the electromagnetic switch works, the transistor Q4 is triggered to turn on and the delay device U3 is started to run. During the delay time, if the pressure difference returns to the set value, the electromagnetic switch loses power, and the pressure relief is completed. If the pressure difference does not return to the set value, the delay device U3 controls the relay switch S1 to close, and at this time controls the opening of the first electric ball valve, the second electric ball valve and the third electric ball valve, thereby ensuring the safety of the main pipeline; When there is condensed water in the main pipeline, the first manual ball valve or the second manual ball valve can be opened; When the thermometer senses that the steam temperature in the main pipeline is higher than the set value, the processor U1 obtains the early warning signal and controls the thermometer to send instructions to the transistor Q1, so that the transistor Q2 is turned on, the electric actuator is operated, and the position of the positioner in the desuperheater is adjusted, and then the flow rate of the desuperheater atomizing nozzle is adjusted according to the temperature change to adjust the temperature of the steam in the main pipeline; When the thermometer senses that the steam temperature in the main pipeline is higher than the set value and the desuperheater is ineffective, the processor U1 controls the opening of the second and third electric ball valves through the delay device U3, and the liquid level of the temperature control valve rises and opens to cool down. When the pressure behind the first check valve exceeds the pressure of the pressure relief valve, the safety valve opens; When the remote control integrated circuit board is abnormal, the pressure relief valve will automatically become unstable and release pressure after the pressure rises to the set value, and the temperature control valve will open to release pressure after the temperature rises to the set value.

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