Vortex tube refrigerator circulating air cooling device of flue gas ultrasonic current meter

Abstract

The utility model relates to the technical field of stationary pollution source flue gas on-line monitoring, in particular to a vortex tube refrigerator circulating air cooling device of a flue gas ultrasonic current meter, which comprises a probe rod, an ultrasonic transducer is arranged at one end of the probe rod, a control box is arranged at the other end of the probe rod, a vortex refrigerator is arranged on one side of the control box, and the vortex refrigerator is arranged on the other side of the probe rod. An air outlet and an air outlet are formed in the side, close to the vortex refrigerator, of the probe rod, a circulating air cooling assembly is arranged in the probe rod and around the ultrasonic transducer, the circulating air cooling assembly is a spiral heat dissipation pipe, and an air outlet is formed in the control box. The vortex refrigerator has the advantages that the vortex refrigerator is simple in structure, the vortex refrigerator and the spiral heat dissipation pipe are adopted, cooling is achieved through cold air circulation, the cooling effect is better, the temperature sensor is arranged, the temperature can be detected in real time, and the vortex refrigerator has the advantages of being simple in structure, low in cost and high in practicability. The temperature can be automatically controlled, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of online monitoring of flue gas from fixed pollution sources, in particular to a circulating air cooling device of a vortex tube cooler of a flue gas ultrasonic flow meter. Background Art

[0002] The online ultrasonic flue gas velocity meter is an instrument that is installed at an angle on the opposite side of the measurement flue and uses the ultrasonic time difference method to measure flue gas velocity. The ultrasonic method is widely used because it can still accurately measure at low flow rates. However, the normal operating temperature of the ultrasonic transducer is generally below 70-80°C. When the operating temperature of the pollution source flue is above 150°C, it is particularly important to design a cooling system that is easy to use to ensure the normal operation of the transducer installed in the flue. The existing inner and outer barrel circulating air cooling device relies solely on the flow of compressed air and heat conduction to cool down. The compressed air flow rate requirements are particularly high, and thus the requirements for the compressed air supply system at the air inlet are relatively high. Designing a more universal cooling structure is particularly important. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides a vortex tube cooler circulating air cooling device for a flue gas ultrasonic flowmeter, which is used to solve the high use requirements of the existing cooling device and the cooling problem of the transducer.

[0004] In order to solve the above problems, the technical solution of the utility model is as follows: a vortex tube cooler circulating air cooling device for a flue gas ultrasonic flowmeter, comprising a probe rod, an ultrasonic transducer is provided at one end of the probe rod, a control box is provided at the other end, a vortex cooler is provided on one side of the control box, an air outlet and an air outlet are provided on the side of the probe rod close to the vortex cooler, and a circulating air cooling component is provided inside the probe rod and around the ultrasonic transducer.

[0005] Furthermore, the circulating air cooling component is a spiral heat pipe.

[0006] Furthermore, the spiral heat dissipation pipe includes a heat dissipation air inlet end and a heat dissipation air outlet end, the heat dissipation air inlet end and the heat dissipation air outlet end are located on the same side, and the heat dissipation air outlet end is arranged in the inner cavity of the probe rod.

[0007] Furthermore, temperature sensors are provided on the heat dissipation air inlet end and the heat dissipation air outlet end respectively, and the temperature sensors on the heat dissipation air inlet end extend out of the probe rods.

[0008] Furthermore, the vortex cooler is provided with a compressed air inlet, a vortex cooler hot end gas outlet, and a vortex cooler cold end gas outlet.

[0009] Furthermore, an air pipe joint is provided on the control box, and the air pipe passes through the air pipe joint and is connected to the compressed air inlet.

[0010] Furthermore, a heat-insulating layer is provided in the spiral heat-insulating pipe.

[0011] Furthermore, a heat-insulating layer is provided inside the probe.

[0012] Furthermore, an outer probe rod for installation on the flue is provided on the outer side of the probe rod.

[0013] Compared with the existing technology, the utility model has the following beneficial effects: simple structure, adopts vortex cooler and spiral heat pipe, uses cold air circulation to cool down, has better cooling effect, is equipped with a temperature sensor to detect temperature in real time, can automatically control temperature, has higher control accuracy, and has a wider range of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model;

[0016] Figure 3 This is the front view of the spiral heat dissipation pipe of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the spiral heat dissipation pipe of the utility model.

[0018] In the figure: 1 probe rod, 101 air outlet, 102 air outlet, 2 vortex cooler, 201 compressed air inlet, 202 vortex cooler hot end gas outlet, 203 vortex cooler cold end gas outlet, 3 ultrasonic transducer, 4 insulation layer, 5 external probe rod, 6 control box, 7 spiral heat pipe, 701 heat dissipation air inlet, 702 heat dissipation air outlet. DETAILED DESCRIPTION

[0019] like Figure 1 、 Figure 2 As shown, a vortex tube cooler circulating air cooling device for a flue gas ultrasonic flowmeter includes a probe rod 1, an ultrasonic transducer 3 is provided at one end of the probe rod 1, a control box 6 is provided at the other end, a vortex cooler 2 is provided on one side of the control box 6, an air outlet 102 and an air outlet 101 are provided on the side of the probe rod 1 close to the vortex cooler 2, and a circulating air cooling component is provided inside the probe rod 1 and around the ultrasonic transducer 3.

[0020] The vortex refrigerator 2 is provided with a compressed air inlet 201, a vortex refrigerator hot end gas outlet 202, and a vortex refrigerator cold end gas outlet 203. The vortex refrigerator hot end gas outlet 202 flows out from the air outlet 101 through an air pipe (usually a polytetrafluoroethylene tube); an air pipe joint is provided on the control box, and the air pipe passes through the air pipe joint to be connected to the compressed air inlet; the cold air from the vortex refrigerator cold end gas outlet 203 reaches the heat dissipation inlet end 701 of the spiral heat dissipation tube 7 through the air pipe.

[0021] like Figure 3 、 Figure 4 As shown, the circulating air cooling component is a spiral heat dissipation tube 7. The spiral heat dissipation tube 7 can be made of copper tube, which has a better cooling effect. The spiral heat dissipation tube 7 includes a heat dissipation air inlet end 701 and a heat dissipation air outlet end 702. The heat dissipation air inlet end 701 and the heat dissipation air outlet end 702 are located on the same side. The cold air reaches the heat dissipation air inlet end 701 through the air pipe from the cold end gas outlet 203 of the vortex refrigerator to cool the ultrasonic transducer 3. The generated hot air extends from the heat dissipation air outlet end 702 through the air pipe to the air outlet 102 for discharge. The heat dissipation air outlet end 702 is arranged in the inner cavity of the probe rod 1, and temperature sensors are respectively provided on the heat dissipation air inlet end 701 and the heat dissipation air outlet end 702. The temperature sensor of the heat dissipation air inlet end 701 extends out of the probe rod 1.

[0022] A heat pipe insulation layer is provided inside the spiral heat pipe 7, and a heat insulation layer 4 is provided inside the probe rod 1 to play a heat insulation role and prevent the probe rod 1 from being damaged. An outer probe rod 5 for installation on the flue is provided on the outside of the probe rod 1.

[0023] During use, compressed air passes through the control box 6 and enters the vortex cooler 2 from the compressed air inlet 201. The hot end gas is discharged from the hot end gas outlet 202 of the vortex cooler through the air pipe and the air outlet 101. The cold end gas is discharged from the cold end gas outlet 203 of the vortex cooler through the air pipe to the heat dissipation inlet end 701, and the ultrasonic transducer 3 is cooled. The generated hot air extends from the heat dissipation outlet end 702 through the air pipe to the outlet 102 and is discharged. The overall cycle is simple. The temperature sensors on the heat dissipation inlet end 701 and the heat dissipation outlet end 702 will send signals to the control box 6. The control box 6 controls the vortex cooler 2 to control the temperature within a certain range.

[0024] The present application has a simple structure, and uses a vortex tube cooler 2 to cool the compressed air, and then the cooled compressed air is circulated to cool the ultrasonic transducer 3. In addition, a copper tube is used to surround the ultrasonic transducer 3 to achieve a more stable circulation cooling effect. Temperature sensors are provided on the outside and inside of the spiral heat dissipation tube 7 to facilitate the detection and control of the cooling effect. The entire probe rod is isolated from the flue, and the gas in the flue will not enter the inside of the probe rod. The commonly used compressed air system can meet the requirements. The vortex cooler 2 is first used for cooling and then circulated to cool. The cooling speed is fast and the cooling effect is better. It can meet the normal operating temperature of the ultrasonic transducer 3 and ensure the accuracy of the measurement.

[0025] The above specific implementation methods are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to examples, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A vortex tube cooler circulating air cooling device for a flue gas ultrasonic flow meter, comprising a probe, characterized in that: An ultrasonic transducer is provided at one end of the probe rod, a control box is provided at the other end, a vortex cooler is provided on one side of the control box, an air outlet and an air outlet are provided on the side of the probe rod close to the vortex cooler, and a circulating air cooling component is provided inside the probe rod and around the ultrasonic transducer.

2. The cooling device according to claim 1, characterized in that: The circulating air cooling component is a spiral heat dissipation pipe.

3. The cooling device according to claim 2, characterized in that: The spiral heat dissipation pipe comprises a heat dissipation air inlet end and a heat dissipation air outlet end, the heat dissipation air inlet end and the heat dissipation air outlet end are located on the same side, and the heat dissipation air outlet end is arranged in the inner cavity of the probe rod.

4. The cooling device according to claim 3, characterized in that: Temperature sensors are respectively provided on the heat dissipation air inlet end and the heat dissipation air outlet end, and a probe rod is extended from the temperature sensor at the heat dissipation air inlet end.

5. The cooling device according to claim 1, characterized in that: The vortex refrigerator is provided with a compressed air inlet, a vortex refrigerator hot end gas outlet, and a vortex refrigerator cold end gas outlet.

6. The cooling device according to claim 5, characterized in that: An air pipe joint is provided on the control box, and the air pipe passes through the air pipe joint and is connected to the compressed air inlet.

7. The cooling device according to claim 2, characterized in that: A heat-dissipating pipe insulation layer is arranged in the spiral heat-dissipating pipe.

8. The cooling device according to claim 1, characterized in that: An insulation layer is provided inside the probe.

9. The cooling device according to claim 1, characterized in that: An outer probe rod for being installed on the flue is provided on the outer side of the probe rod.

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