CN112403173A - Large-air-volume gas cooling device control system - Google Patents
Large-air-volume gas cooling device control system Download PDFInfo
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- CN112403173A CN112403173A CN201910774276.8A CN201910774276A CN112403173A CN 112403173 A CN112403173 A CN 112403173A CN 201910774276 A CN201910774276 A CN 201910774276A CN 112403173 A CN112403173 A CN 112403173A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
Abstract
The invention provides a control system of a large-air-volume gas cooling device, and relates to the technical field of waste gas treatment. This big amount of wind gas cooling device control system includes: the temperature sensor, the control circuit, the pump and the air-cooled heat exchanger are electrically connected with each other; the temperature sensor is used for sensing the temperature change of each part in the control system of the large-air-volume gas cooling device, the control circuit is used for controlling the operation of the control system of the large-air-volume gas cooling device, the pump is used for providing power for conveying cooling liquid, and the air-cooled heat exchanger is used for reducing the temperature of the cooling liquid. The invention realizes the control of the large-air-volume gas cooling device and further improves the efficiency of waste gas cooling.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a control system of a large-air-volume gas cooling device.
Background
In the exhaust gas treatment process, it is often necessary to cool the high-temperature, high-humidity exhaust gas to reduce the moisture content therein or primarily remove long-chain organic contaminants therein. Such requirements often require large air volumes and the final temperatures need not be low. Therefore, the common waste gas condensing system (small air volume and low temperature) cannot meet the requirements in terms of air volume and power consumption.
In the prior art, the exhaust gas is conducted through a large number of exhaust gas lines, which are accommodated in a housing, so that a flow of coolant, in particular water or glycol, with a liquid state, for example, is produced between the housing and the exhaust gas line or between a plurality of exhaust gas lines. However, in this case, the cooler generates heat particularly at the gas inlet side, which results in: the cooler has a significantly higher temperature here than in the more remote stretch. This leads to an uneven temperature distribution in the material of the cooler and thus to stresses. In particular, temperature variations of the gas and of the coolant lead to further inhomogeneities in the temperature distribution at different material thicknesses and thus at different rates of temperature variation, which cause the described stresses, wherein temperature variations occur as a result of unstable operating characteristics of the internal combustion engine.
Therefore, it is desirable to provide a device and a control system thereof, which can be suitable for cooling of large-volume exhaust gas, can be used for whitening of high-humidity exhaust gas, and can be used for pretreatment of high-tar exhaust gas.
Disclosure of Invention
The present invention is directed to a control system for a large-air-volume gas cooling device, which is provided to improve the efficiency of waste gas treatment.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, an embodiment of the present invention provides a control system for a large-air-volume gas cooling device, including: the temperature sensor, the control circuit, the pump and the air-cooled heat exchanger are electrically connected with each other; the temperature sensor is used for sensing the temperature change of each part in the control system of the large-air-volume gas cooling device, the control circuit is used for controlling the operation of the control system of the large-air-volume gas cooling device, the pump is used for providing power for conveying cooling liquid, and the air-cooled heat exchanger is used for reducing the temperature of the cooling liquid.
Preferably, the temperature sensor includes: an inlet gas temperature sensor, an outlet gas temperature sensor, and an air temperature sensor.
Preferably, the inlet gas temperature sensor, the outlet gas temperature sensor and the air temperature sensor are respectively arranged at the air inlet of the cooling box body, the air outlet of the cooling box body and outside the cooling box body.
Preferably, the control circuit comprises a single chip microcomputer, a power supply, a pump control interface circuit and a fan control interface circuit; the single chip microcomputer is used for controlling a control system of the large-air-volume gas cooling device, the power supply provides electric power for the operation of the control circuit, the pump control interface circuit is used for controlling the operation power of the pump, and the fan control interface is used for controlling the operation power of the air-cooled heat exchanger.
Preferably, the temperature sensor is a digital interface temperature sensor.
In a second aspect, the embodiment of the present invention further provides a large-air-volume gas cooling device, and the control system of the large-air-volume gas cooling device is applied to the large-air-volume gas cooling device.
The invention has the beneficial effects that: the large-air-volume gas cooling device control system comprises: the temperature sensor, the control circuit, the pump and the air-cooled heat exchanger are electrically connected with each other; the temperature sensor is used for sensing the temperature change of each part in the control system of the large-air-volume gas cooling device, the control circuit is used for controlling the operation of the control system of the large-air-volume gas cooling device, the pump is used for providing power for conveying cooling liquid, and the air-cooled heat exchanger is used for reducing the temperature of the cooling liquid. The temperature sensor can send temperature information to the control circuit, the control circuit carries out operation and processing on the temperature information, the operation condition of the large-air-volume gas cooling device control system is judged according to the information, and the operation power of the pump and the air-cooled heat exchanger is further adjusted. The control on the operation of the large-air-volume gas cooling device is realized, and the control on the waste gas treatment efficiency can be further realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of a control system for a high-air-flow gas cooling device according to the present invention;
FIG. 2 is a schematic diagram of a control circuit according to an embodiment of the present invention;
fig. 3 is a diagram illustrating an operation process of a control system of a large-air-volume gas cooling device according to an embodiment of the present invention.
In the figure: 1-inlet gas temperature sensor, 2-outlet gas temperature sensor, 3-air temperature sensor, 4-control circuit, 401-single chip microcomputer, 402-power supply, 403-pump control interface circuit, 404-fan control interface circuit, 5-pump, 6-air cooling heat exchanger.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
Fig. 1 is a schematic diagram of a control system of a large-air-volume gas cooling device according to an embodiment of the present invention, fig. 2 is a schematic diagram of a control circuit 4 according to an embodiment of the present invention, and fig. 3 is a diagram of an operation process of the control system of the large-air-volume gas cooling device according to an embodiment of the present invention.
FIG. 1 is a schematic diagram of a control system for a high-air-flow gas cooling device provided by the present application; as shown in fig. 1, the system includes: a temperature sensor, a control circuit 4, a pump 5 and an air-cooled heat exchanger 6 electrically connected to each other; the temperature sensor is used for sensing the temperature change of each part in the control system of the large-air-volume gas cooling device, the control circuit 4 is used for controlling the operation of the control system of the large-air-volume gas cooling device, the pump 5 is used for providing power for conveying cooling liquid, and the air-cooled heat exchanger 6 is used for reducing the temperature of the cooling liquid.
The temperature sensor can acquire temperature information of the position where the temperature sensor is located, the temperature information is sent to the control circuit 4, the control circuit 4 receives the temperature information, the temperature information is analyzed and processed, the operating power of the pump 5 and the air-cooled heat exchanger 6 is controlled according to the temperature information, the flow of the pump 5 and the rotating speed of the fan of the air-cooled heat exchanger 6 are further controlled, the operating power of the large-air-volume gas cooling device is further controlled, and finally the rate of waste gas treatment is controlled.
The temperature sensor is a sensor which can sense temperature and convert the temperature into a usable output signal.
The control circuit 4 can control the operation of the control system of the large air volume gas cooling device, and further control the operation of each electronic component in the system.
The pump 5 is a machine that conveys or pressurizes a fluid. It transfers the mechanical energy of the prime mover or other external energy to the liquid, causing the liquid energy to increase. Can be used for transporting cooling liquid.
The air-cooled heat exchanger 6 is composed of a liquid pipeline, radiating fins and a radiating fan, cooling liquid can enter the air-cooled heat exchanger 6 through the liquid pipeline, after the cooling liquid enters the air-cooled heat exchanger 6, the radiator absorbs heat of the cooling liquid, and the heat is radiated into the air-cooled heat exchanger 6 or out of the air-cooled heat exchanger 6 under the action of the radiating fan, so that the temperature of the air-cooled heat exchanger 6 is normal.
In addition, the air-cooled heat exchanger 6 can absorb heat by contacting with the surface of a heat-generating component, and then transfer the heat to a remote place through various methods, such as air in a cabinet, and then the cabinet transfers the hot air to the outside of the cabinet, so as to complete heat dissipation.
The temperature sensor is used for sensing the temperature change of each part in the control system of the large-air-volume gas cooling device, the control circuit 4 is used for controlling the operation of the control system of the large-air-volume gas cooling device, the pump 5 is used for providing power for conveying cooling liquid, and the air-cooled heat exchanger 6 is used for reducing the temperature of the cooling liquid.
The embodiment of the invention provides a control system of a large-air-volume gas cooling device, which comprises: a temperature sensor, a control circuit 4, a pump 5 and an air-cooled heat exchanger 6 electrically connected to each other; the temperature sensor is used for sensing the temperature change of each part in the control system of the large-air-volume gas cooling device, the control circuit 4 is used for controlling the operation of the control system of the large-air-volume gas cooling device, the pump 5 is used for providing power for conveying cooling liquid, and the air-cooled heat exchanger 6 is used for reducing the temperature of the cooling liquid. The temperature sensor can send temperature information to the control circuit 4, the control circuit 4 calculates and processes the temperature information, the operation condition of the large air volume gas cooling device control system is judged according to the information, and the operation power of the pump 5 and the air cooling heat exchanger 6 is further adjusted. The control on the operation of the large-air-volume gas cooling device is realized, and the control on the waste gas treatment efficiency can be further realized.
Preferably, in order to respectively acquire the temperature information outside the cooling box air inlet, the cooling box air outlet and the cooling box more accurately, the temperature sensor includes: an inlet gas temperature sensor 1, an outlet gas temperature sensor 2, and an air temperature sensor 3.
The inlet gas temperature sensor 1, the outlet gas temperature sensor 2 and the air temperature sensor 3 can acquire temperature information of the air inlet of the cooling box body, the air outlet of the cooling box body and the outside of the cooling box body, and can send the temperature information to the control circuit 4, and the control circuit 4 further processes the temperature information.
Preferably, comparatively accurate temperature information outside cooling box air inlet, cooling box gas outlet and the cooling box of acquireing respectively, import gas temperature sensor 1, export gas temperature sensor 2 and air temperature sensor 3 set up respectively outside air inlet, the gas outlet of cooling box and the cooling box of cooling box.
Preferably, in order to ensure the normal operation of the control circuit 4 and to realize the control of the pump 5 and the air-cooled heat exchanger 6 by the control circuit 4, as shown in fig. 2, the control circuit 4 includes a single chip 401, a power source 402, a pump 5 control interface circuit 403 and a fan control interface circuit 404; the single chip microcomputer 401 is used for controlling a control system of the large-air-volume gas cooling device, the power source 402 provides power for the operation of the control circuit 4, the pump 5 control interface circuit 403 is used for controlling the operation power of the pump 5, and the fan control interface is used for controlling the operation power of the air-cooled heat exchanger 6.
Under the power supply of the power source 402 and the control of the single chip microcomputer 401, the pump 5 control interface circuit 403 and the fan control interface circuit 404 can respectively control the flow rate of the pump 5 and the rotating speed of the fan, and further can control the flow rate of the cooling liquid and the cooling speed of the cooling liquid.
The pump 5 flow control method may include: adjusting the opening of the outlet valve, adjusting the bypass valve, adjusting the diameter of the impeller and controlling the speed regulation; the pump 5 is connected with the outlet pipeline regulating valve in the opening regulation of the outlet valve, the actual effect of the system is the same as that of a new pump 5 system, the maximum output pressure head of the pump 5 is not changed, but the flow curve is attenuated to some extent; the valve and the pump 5 are connected in parallel in the bypass valve regulation, the actual effect of the bypass valve regulation is the same as that of a new pump 5 system, the maximum output pressure head of the pump 5 is changed, meanwhile, the flow curve characteristic is also changed, and the flow curve is closer to the linear shape; the diameter of the impeller is adjusted without using any external component, and the flow characteristic curve changes along with the change of the diameter; the speed regulation control can directly change the flow curve of the pump 5 according to the change of the rotating speed of the impeller, the characteristic of the curve is not changed, when the rotating speed is reduced, the curve is flattened, and the pressure head and the maximum flow are both reduced.
The wind quantity of the fan can be detected by adopting an anemometer method, the average wind speed passing through each ring on a simulated circular plane is measured by using an anemometer, the wind quantity passing through the ring is obtained by multiplying the corresponding ring area, and the total output wind quantity of the electric fan is the sum of the wind quantities of all the rings passing through the electric fan until the limit of the reading.
Preferably, in order to sense the temperature of the surrounding environment more accurately, data is accurately transmitted to the control circuit 4, and the temperature sensor is a digital interface temperature sensor.
The digital interface temperature sensor can convert the temperature physical quantity into a sensor which is convenient for data acquisition equipment such as a computer, a PLC, an intelligent instrument and the like to directly read the digital quantity through a temperature sensitive element and a corresponding circuit.
In a second aspect, the embodiment of the present invention further provides a large-air-volume gas cooling device, and the control system of the large-air-volume gas cooling device is applied to the large-air-volume gas cooling device.
In summary, an embodiment of the present invention provides a large-air-volume gas cooling device, where the control system of the large-air-volume gas cooling device is applied to a large-air-volume gas cooling device, and the control system of the large-air-volume gas cooling device includes: a temperature sensor, a control circuit 4, a pump 5 and an air-cooled heat exchanger 6 electrically connected to each other; the temperature sensor is used for sensing the temperature change of each part in the control system of the large-air-volume gas cooling device, the control circuit 4 is used for controlling the operation of the control system of the large-air-volume gas cooling device, the pump 5 is used for providing power for conveying cooling liquid, and the air-cooled heat exchanger 6 is used for reducing the temperature of the cooling liquid. The temperature sensor can send temperature information to the control circuit 4, the control circuit 4 calculates and processes the temperature information, the operation condition of the large air volume gas cooling device control system is judged according to the information, and the operation power of the pump 5 and the air cooling heat exchanger 6 is further adjusted. The control on the operation of the large-air-volume gas cooling device is realized, and the control on the waste gas treatment efficiency can be further realized.
Fig. 3 is a diagram of an operation process of a control system of a large-air-volume gas cooling device according to an embodiment of the present invention, as shown in fig. 3, the operation process of the system includes:
s301, the three temperature sensors respectively acquire temperature information of the air inlet of the cooling box body, the air outlet of the cooling box body and the outside of the cooling box body, and send the temperature information to the control circuit 4, namely the single chip microcomputer 401;
s302, reading temperature information of the three temperature sensors by the singlechip 401;
s303, the singlechip 401 judges the size relation between the gas outlet temperature T2 and a preset gas target temperature T0;
s304, if the T2 is larger than the T0, the cooling is insufficient, the cooling power can be increased by increasing the flow rate of the pump 5, and then judgment is carried out; if T2 is greater than T0, continuing to increase the fan speed; if T2 is smaller than T0, the flow rate of the pump 5 is increased, and the temperature information of the three temperature sensors is read again for further judgment;
the flow of the pump 5 and the rotating speed of the fan are increased, so that the speed of taking away the heat of the waste gas by the cooling liquid can be increased, and the treatment speed of the waste gas is further increased;
s305, if the T2 is smaller than the T0, the cooling effect is beyond expectation, the cooling power can be reduced by reducing the rotating speed of the fan, and then judgment is carried out; if T2 is less than T0, continue to decrease the flow of pump 5; if T2 is larger than T0, increasing the rotating speed of the fan, and reading the temperature information of the three temperature sensors again for further judgment;
the flow of the pump 5 and the rotating speed of the fan are reduced, so that the speed of the cooling liquid for taking away the heat of the waste gas can be reduced, and the treatment speed of the waste gas is further reduced;
and S306, if the T2 is equal to the T0, the cooling effect meets the requirement, and the temperature information of the three temperature sensors is read again at regular time for further judgment.
It should be noted that T0 may be set as required. For example: when de-whitening, T0 may be set to ambient temperature T3 minus 30 degrees celsius (since white smoke does not occur when the gas is discharged into the air when the gas temperature differs from the ambient temperature by less than 30 degrees celsius). When tar is removed, T0 may be set at 60 degrees Celsius (since 90% of the tar condenses to a liquid at 60 degrees Celsius). When removing heavy oil or other particular components, T0 may be set to a response temperature that ensures that the target component condenses to a liquid or solid at that temperature.
These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Claims (6)
1. A large-air-volume gas cooling device control system, comprising: the temperature sensor, the control circuit, the pump and the air-cooled heat exchanger are electrically connected with each other; the temperature sensor is used for sensing the temperature change of each position in the large-air-volume gas cooling device control system, the control circuit is used for controlling the operation of the large-air-volume gas cooling device control system, the pump is used for providing power for conveying cooling liquid, and the air-cooled heat exchanger is used for reducing the temperature of the cooling liquid.
2. The high-volume gas cooling device control system of claim 1, wherein the temperature sensor comprises: an inlet gas temperature sensor, an outlet gas temperature sensor, and an air temperature sensor.
3. The large-air-volume gas cooling device control system according to claim 1, wherein the inlet gas temperature sensor, the outlet gas temperature sensor and the air temperature sensor are respectively disposed at the air inlet of the cooling box body, the air outlet of the cooling box body and outside the cooling box body.
4. The large-air-volume gas cooling device control system according to claim 1, wherein the control circuit comprises a single chip microcomputer, a power supply, a pump control interface circuit and a fan control interface circuit; the single chip microcomputer is used for controlling a control system of the large-air-volume gas cooling device, the power supply provides electric power for the operation of the control circuit, the pump control interface circuit is used for controlling the operation power of the pump, and the fan control interface is used for controlling the operation power of the air-cooled heat exchanger.
5. The high-volume gas cooling device control system of claim 1, wherein the temperature sensor is a digital interface temperature sensor.
6. A large-air-volume gas cooling device characterized in that the large-air-volume gas cooling device control system according to any one of claims 1 to 5 is applied to the large-air-volume gas cooling device.
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| CN201910774276.8A CN112403173A (en) | 2019-08-21 | 2019-08-21 | Large-air-volume gas cooling device control system |
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| CN201910774276.8A CN112403173A (en) | 2019-08-21 | 2019-08-21 | Large-air-volume gas cooling device control system |
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| US20060180300A1 (en) * | 2003-07-23 | 2006-08-17 | Lenehan Daniel J | Pump and fan control concepts in a cooling system |
| CN104571182A (en) * | 2014-08-22 | 2015-04-29 | 苏州矩道汽车科技有限公司 | Electro-hydraulic hybrid-driven intelligent cooling system |
| CN204648533U (en) * | 2015-06-01 | 2015-09-16 | 哈尔滨理工大学 | The degenerative intelligent frequency-conversion central air conditioning system of a kind of backwater |
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