CN215355315U - Contaminated soil in-situ gas thermal desorption device capable of automatically regulating and controlling heating temperature - Google Patents
Contaminated soil in-situ gas thermal desorption device capable of automatically regulating and controlling heating temperature Download PDFInfo
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- CN215355315U CN215355315U CN202120579565.5U CN202120579565U CN215355315U CN 215355315 U CN215355315 U CN 215355315U CN 202120579565 U CN202120579565 U CN 202120579565U CN 215355315 U CN215355315 U CN 215355315U
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Abstract
The utility model discloses a polluted soil in-situ gas thermal desorption device capable of automatically regulating and controlling heating temperature, which consists of a combustion chamber and a heating rod which are connected with each other, wherein the combustion chamber is provided with a heating nozzle and an electric butterfly valve, the heating rod is connected with an electric thermocouple, the electric thermocouple and the electric butterfly valve are connected to a control circuit through a circuit, and the control circuit is controlled by a remote control system. The utility model adds an electric butterfly valve and a corresponding control system on the combustion nozzle on the basis of the original in-situ thermal desorption device. When the device is used, the temperature of the heating inner cylinder is measured according to a thermocouple in the in-situ thermal desorption device, then the measured temperature is fed back to the remote control system, the increase or decrease of the air inlet volume is selected to be adjusted through the remote control system, the electric butterfly valve is adjusted, and therefore the air inlet volume is accurately controlled.
Description
Technical Field
The utility model belongs to the technical field of soil remediation engineering, and particularly relates to a contaminated soil in-situ gas thermal desorption device capable of automatically regulating and controlling heating temperature.
Background
In recent years, with the improvement of public environmental awareness and the attention of the state to environmental policies, under the further implementation of two policies of 'two-in three-out' and 'two-in garden-out', a large number of chemical enterprises are moved, transformed or shut down, but because the chemical enterprises generate a large amount of pollutants in the production process, the city and surrounding areas thereof have a large number of polluted plots after the factory is moved. The land parcels seriously harm the health of human bodies and restrict the development of cities.
The in-situ thermal desorption is a more effective restoration technology, and the basic principle is that the temperature of a polluted area is increased by heating, the concentration of pollutants in a liquid phase or a gas phase is increased, and the liquid phase extraction or the gas phase extraction of the pollutants is improved, so that the pollutants are desorbed from the soil. The thermal desorption of the fuel gas is a common thermal desorption mode, namely, the heat generated by burning the natural gas is used for heating the soil.
At present, with the deep research of in-situ thermal desorption equipment in various colleges and universities and laboratories, fuel-saving in-situ gas thermal desorption devices appear in succession. But most of novel normal position gas thermal desorption devices heating temperature all need artifical the regulation, and the regulation precision is low, and adjusts the problem that consumes the energy many at every turn. The problems of manual adjustment and adjustment precision are now abundant. In each test, the manual regulation of the air intake and the air intake amount needs to be repeated and the time needed by regulation is more because the amount of the required air intake cannot be accurately controlled, so that the test efficiency is greatly reduced.
Disclosure of Invention
The utility model provides a contaminated soil in-situ gas thermal desorption device capable of automatically regulating and controlling heating temperature, which aims to solve the problems that manual in-situ operation is required, the regulation precision is insufficient, energy consumption is high, time is wasted and the like in the regulation.
The utility model is realized by the following technical scheme:
a polluted soil in-situ gas thermal desorption device capable of automatically regulating and controlling heating temperature comprises an electric butterfly valve, a combustion nozzle, a flange, a secondary air pipe, a secondary air regulating valve, a combustion chamber inner cylinder, a flue gas pipe, a thermocouple, a heating inner cylinder, a heating rod, a control circuit, a remote operation system and a circuit;
the combustion chamber is fixedly communicated with the heating rod through a nut;
the top of the combustion chamber is connected with a combustion nozzle through a flange, and an electric butterfly valve is arranged on the combustion nozzle; a secondary air regulating valve is vertically arranged on the main body of the combustion chamber; the combustion chamber is internally provided with a combustion chamber inner cylinder;
a flue gas pipe is vertically arranged on the main body of the heating rod; a heating inner cylinder is arranged in the heating rod; the heating inner cylinder is funnel-shaped, and the wide part is fixed at the joint of the heating rod and the combustion chamber; the heating inner cylinder is connected with a thermocouple; the thermocouple vertically penetrates through the heating rod main body;
the electric butterfly valve and the thermocouple are respectively connected with the control circuit through lines; the control circuit is connected with a remote operating system.
The utility model adds an electric butterfly valve and a corresponding control system on the combustion nozzle on the basis of the original in-situ thermal desorption device. The original in-situ thermal desorption device is an existing device, and the working principle of the device is not described in detail. When the device works, the temperature of the heating inner cylinder is measured according to a thermocouple in the in-situ thermal desorption device, then the measured temperature is fed back to the remote control system, then the increase or decrease of the air inlet volume is selected to be adjusted through the remote control system, and then the relay is controlled by sending an instruction through the single chip microcomputer and the control circuit, so that the electric butterfly valve is adjusted, and the electric butterfly valve is controlled with high precision and the air inlet volume is controlled accurately.
As a further improvement of the utility model, the control circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a PNP triode Q1, an NPN triode Q2, a relay RL1, a light emitting diode D1, a diode D2 and a single chip microcomputer;
one end of the resistor R1 is connected with the OUTPUT end, and the other end of the resistor R1 is connected with a PNP triode Q1; one end of the PNP triode Q1 is connected to a diode D2, and the other end of the PNP triode Q1 is connected with a resistor R3; a PNP triode Q1 is connected with a diode D2 connecting circuit in parallel and connected with a light-emitting diode D1 and a resistor R2, and the light-emitting diode D1 is connected with a resistor R2 in series; the other end of the resistor R3 is connected to an NPN triode Q2, one end of the NPN triode Q2 is connected to a diode D2, and the other end of the NPN triode Q2 is connected to a power supply; a resistor R4 is also connected in parallel on a connection line of the NPN triode Q2 and the resistor R3, and the other end of the resistor R4 is connected to a power supply end; two ends of the diode D2 are connected with a coil of a relay RL 1; two ends of the electric butterfly valve are respectively connected with a relay RL1 and a resistor R5.
The control circuit of the utility model completes the discharge when the relay is disconnected by connecting a diode D2 in parallel between the coils of the relay; the collector of the NPN transistor Q2 is connected to the electromagnetic coil of the relay RL1, and a diode D2 is connected to the coil of the relay RL1, and the diode D2 plays a role of discharging the electric energy accumulated in the relay RL1 when the relay RL1 is turned off. The control circuit 12 is also provided with a single chip microcomputer for outputting signals to an OUTPUT end of the control circuit, and a PNP triode Q1 amplifies the signal of the single chip microcomputer. A resistor R3 is connected between the PNP transistor Q1 and the NPN transistor Q2, and the resistor R3 prevents the output current of the PNP transistor Q1 from being large, which may damage the entire circuit. The relay RL also functions to reduce the high voltage, high current of the drive device.
As a further improvement of the utility model, the control circuit controls the circuit through pins P1.0, P1.1, P1.2 and P1.3 of the single chip microcomputer, and amplifies the current input from the OUTPUT of the single chip microcomputer through a triode Q1.
As a further improvement of the utility model, the control circuit reflects the on-off of the relay through a light emitting diode D1.
The control circuit is connected with a light emitting diode D1, and the on-off of the light emitting diode D1 plays a role in reflecting the on-off of the relay RL1, so that an operator can know the working condition of the equipment more intuitively.
The utility model has the following beneficial effects:
1. the utility model adds the electric butterfly valve and the corresponding control system on the combustion nozzle on the basis of the original in-situ thermal desorption device, obtains better thermal desorption effect under the condition of consuming less energy, and solves the problems of complicated operation, inconvenient operation, low air intake control precision and more time consumption in the manual operation control.
2. The control circuit of the utility model is connected with a diode D2 in parallel between the coils of the relay to release the accumulated electric quantity when the relay is disconnected, thereby protecting the relay and the electric butterfly valve controlled by the relay.
Drawings
Fig. 1 is a schematic structural diagram of a thermal desorption apparatus according to the present invention.
FIG. 2 is a circuit diagram of the control circuit of the present invention.
Fig. 3 is a schematic interface diagram of the remote control system of the present invention.
Reference numerals: 1-an electric butterfly valve, 2-a combustion nozzle, 3-a flange, 4-a secondary air pipe, 5-a secondary air regulating valve, 6-a combustion chamber, 7-a combustion chamber inner barrel, 8-a flue gas pipe, 9-a thermocouple, 10-a heating inner barrel, 11-a heating rod, 12-a control circuit, 13-a remote operating system and 14-a circuit.
Detailed Description
The utility model will be further explained with reference to the drawings.
Example 1
The in-situ gas thermal desorption device for the polluted soil, which can automatically regulate and control the heating temperature, as shown in fig. 1, comprises an electric butterfly valve 1, a combustion nozzle 2, a flange 3, a secondary air pipe 4, a secondary air regulating valve 5, a combustion chamber 6, a combustion chamber inner cylinder 7, a flue gas pipe 8, a thermocouple 9, a heating inner cylinder 10, a heating rod 11, a control circuit 12, a far-end operating system 13 and a circuit 14;
the combustion chamber 6 is fixedly communicated with the heating rod 11 through a nut;
the top of the combustion chamber 6 is connected with a combustion nozzle 2 through a flange 3, and an electric butterfly valve 1 is arranged on the combustion nozzle 2; a secondary air regulating valve 5 is vertically arranged on the main body of the combustion chamber 6; a combustion chamber inner barrel 7 is arranged in the combustion chamber 6;
a flue gas pipe 8 is vertically arranged on the main body of the heating rod 11; a heating inner cylinder 10 is arranged in the heating rod 11; the heating inner cylinder 10 is funnel-shaped, and the wide part is fixed at the joint of the heating rod 11 and the combustion chamber 6; the heating inner cylinder 10 is connected with a thermocouple 9; the thermocouple 9 vertically penetrates through the main body of the heating rod 11;
the electric butterfly valve 1 and the thermocouple 9 are respectively connected with the control circuit 12 through a line 14; the control circuit 12 is connected with a remote operating system 13.
As shown in fig. 2, the control circuit 12 includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a PNP transistor Q1, an NPN transistor Q2, a relay RL1, a light emitting diode D1, and a diode D2;
one end of the resistor R1 is connected with the OUTPUT end, and the other end of the resistor R1 is connected with a PNP triode Q1; one end of the PNP triode Q1 is connected to a diode D2, and the other end of the PNP triode Q1 is connected with a resistor R3; a PNP triode Q1 is connected with a diode D2 connecting circuit in parallel and connected with a light-emitting diode D1 and a resistor R2, and the light-emitting diode D1 is connected with a resistor R2 in series; the other end of the resistor R3 is connected to an NPN triode Q2, one end of the NPN triode Q2 is connected to a diode D2, and the other end of the NPN triode Q2 is connected to a power supply; a resistor R4 is also connected in parallel on a connection line of the NPN triode Q2 and the resistor R3, and the other end of the resistor R4 is connected to a power supply end; two ends of the diode D2 are connected with a coil of a relay RL 1; and two ends of the electric butterfly valve 1 are respectively connected with a relay RL1 and a resistor R5.
The control circuit 12 further includes a single chip, and controls the circuit through pins P1.0, P1.1, P1.2, and P1.3 of the single chip, and amplifies the current input from OUTPUT by the single chip through a triode Q1.
The control circuit 12 reflects the on-off of the relay through a light emitting diode D1.
In the control circuit of the present embodiment, a diode D2 is connected to the coil of the relay RL1, and the diode D2 can discharge the amount of electricity accumulated in the relay RL1 when the relay RL1 is turned off.
The control circuit 12 is also provided with a single chip microcomputer for outputting signals to an OUTPUT end of the control circuit, and a PNP triode Q1 amplifies the signal of the single chip microcomputer.
A resistor R3 is connected between the PNP transistor Q1 and the NPN transistor Q2, and the resistor R3 prevents the output current of the PNP transistor Q1 from being large, which may damage the entire circuit.
The relay RL also functions to reduce the high voltage, high current of the drive device.
The thermal desorption device of this embodiment is through on original normal position thermal desorption device's basis, has increased electric butterfly valve 1 and corresponding distal end operating system 13 on 2 mouths are spouted in the burning. When the device works, the temperature of the heating inner cylinder 10 is measured according to the thermocouple 9 in the in-situ thermal desorption device, then the measured temperature is fed back to the remote control system 13, then the increase or decrease of the air intake is selected to be adjusted through the interface (shown in figure 3) of the remote control system 13, and then the singlechip and the circuit 14 send instructions to control the relay, so that the adjustment of the opening of the electric butterfly valve 1 is realized, and the electric butterfly valve 1 is controlled with high precision, and the air intake is controlled accurately.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made thereto by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should be considered as falling within the scope of the present invention.
Claims (4)
1. The utility model provides a but contaminated soil normal position gas thermal desorption device of automatic regulation and control heating temperature which characterized in that: the device is composed of an electric butterfly valve (1), a combustion nozzle (2), a flange (3), a secondary air pipe (4), a secondary air regulating valve (5), a combustion chamber (6), a combustion chamber inner barrel (7), a flue gas pipe (8), a thermocouple (9), a heating inner barrel (10), a heating rod (11), a control circuit (12), a far-end operating system (13) and a circuit (14);
the combustion chamber (6) is fixedly communicated with the heating rod (11) through a nut;
the top of the combustion chamber (6) is connected with a combustion nozzle (2) through a flange (3), and the combustion nozzle (2) is provided with an electric butterfly valve (1); a secondary air regulating valve (5) is vertically arranged on the main body of the combustion chamber (6); a combustion chamber inner barrel (7) is arranged in the combustion chamber (6);
a flue gas pipe (8) is vertically arranged on the main body of the heating rod (11); a heating inner cylinder (10) is arranged in the heating rod (11); the heating inner cylinder (10) is funnel-shaped, and the wide part is fixed at the joint of the heating rod (11) and the combustion chamber (6); the heating inner cylinder (10) is connected with a thermocouple (9); the thermocouple (9) vertically penetrates through the main body of the heating rod (11);
the electric butterfly valve (1) and the thermocouple (9) are respectively connected with the control circuit (12) through a line (14); the control circuit (12) is connected with a remote operating system (13).
2. The in-situ gas thermal desorption device capable of automatically regulating and controlling the heating temperature for the polluted soil according to claim 1, which is characterized in that: the control circuit (12) comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a PNP triode Q1, an NPN triode Q2, a relay RL1, a light-emitting diode D1 and a diode D2;
one end of the resistor R1 is connected with the OUTPUT end, and the other end of the resistor R1 is connected with a PNP triode Q1; one end of the PNP triode Q1 is connected to a diode D2, and the other end of the PNP triode Q1 is connected with a resistor R3; a PNP triode Q1 is connected with a diode D2 connecting circuit in parallel and connected with a light-emitting diode D1 and a resistor R2, and the light-emitting diode D1 is connected with a resistor R2 in series; the other end of the resistor R3 is connected to an NPN triode Q2, one end of the NPN triode Q2 is connected to a diode D2, and the other end of the NPN triode Q2 is connected to a power supply; a resistor R4 is also connected in parallel on a connection line of the NPN triode Q2 and the resistor R3, and the other end of the resistor R4 is connected to a power supply end; two ends of the diode D2 are connected with a coil of a relay RL 1; two ends of the electric butterfly valve (1) are respectively connected with a relay RL1 and a resistor R5.
3. The in-situ gas thermal desorption device capable of automatically regulating and controlling the heating temperature for the polluted soil according to claim 2, which is characterized in that: the control circuit (12) controls the circuit through pins P1.0, P1.1, P1.2 and P1.3 of the single chip microcomputer, and amplifies current input from an OUTPUT position of the single chip microcomputer through a triode Q1.
4. The in-situ gas thermal desorption device capable of automatically regulating and controlling the heating temperature for the polluted soil according to claim 2, which is characterized in that: the control circuit (12) reflects the on-off of the relay through a light emitting diode D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120579565.5U CN215355315U (en) | 2021-03-22 | 2021-03-22 | Contaminated soil in-situ gas thermal desorption device capable of automatically regulating and controlling heating temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120579565.5U CN215355315U (en) | 2021-03-22 | 2021-03-22 | Contaminated soil in-situ gas thermal desorption device capable of automatically regulating and controlling heating temperature |
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| Publication Number | Publication Date |
|---|---|
| CN215355315U true CN215355315U (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120579565.5U Active CN215355315U (en) | 2021-03-22 | 2021-03-22 | Contaminated soil in-situ gas thermal desorption device capable of automatically regulating and controlling heating temperature |
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| Country | Link |
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| CN (1) | CN215355315U (en) |
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2021
- 2021-03-22 CN CN202120579565.5U patent/CN215355315U/en active Active
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