Cyclone refrigeration temperature automatic control system

Abstract

The application discloses a cyclone refrigeration temperature automatic control system, comprising: a cyclone refrigerator, which comprises a sample gas inlet and a sample gas outlet, and also comprises an air inlet connected to a second gas inlet pipeline; the temperature measuring module is mounted at a sample gas outlet of the cyclone refrigerator; the air inlet electromagnetic valve is mounted on the second air inlet pipeline; the control device is electrically connected with the cyclone refrigerator, the temperature measuring module and the air inlet electromagnetic valve and used for obtaining the temperature detected by the temperature measuring module and adjusting the on-off condition of the air inlet electromagnetic valve according to the obtained temperature. According to the technical scheme provided by the embodiment of the invention, the air inlet electromagnetic valve is controlled according to the obtained temperature of the outlet sample gas, and the sample gas temperature of the cyclone refrigerator is controlled by controlling the air inlet amount of the air inlet electromagnetic valve, so that the sample gas generated by the air outlet pipeline of the cyclone refrigerator is kept within the set temperature range; and automatic control of the temperature of the sample gas is realized.

Description

Technical Field

[0001] The utility model generally relates to the field of gas cooling, and in particular to a cyclone refrigeration temperature automatic control system. Background Art

[0002] At present, the role of online gas analyzers in chemical plants in process control, safety and environmental protection is becoming increasingly important. Process gases basically need to be cooled and depressurized to reach the appropriate temperature and pressure before they can enter the analyzer for detection and analysis. Cyclone coolers can be used to cool the gas. Cyclone coolers release the heat of the refrigerant medium into the environment through the heat and mass transfer characteristics of the inhaled air to the refrigerant medium, thereby achieving a refrigeration effect.

[0003] However, the common practice of cooling in cyclone refrigerators is to manually adjust the air intake volume and use air cooling to reduce the sample gas temperature to an appropriate range; the temperature measurement itself has a large hysteresis, and this manual adjustment needs to be repeatedly adjusted to minimize the impact of the sample gas's own temperature and ambient temperature changes on temperature control. In this adjustment process, the adjustment of multiple air intake volumes has obvious hysteresis and cumbersomeness, and the gas consumption is excessive, which increases the adjustment cost. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a cyclone refrigeration temperature automatic control system.

[0005] In a first aspect, a cyclone refrigeration temperature automatic control system is provided, comprising:

[0006] A cyclone refrigerator, the cyclone refrigerator is used to cool the sample gas, the cyclone refrigerator comprises a sample gas inlet and a sample gas outlet, the sample gas inlet is connected to a first air inlet pipeline for the sample gas to be cooled to enter, the sample gas outlet is connected to an air outlet pipeline for discharging the cooled sample gas, the cyclone refrigerator also comprises an air inlet, the air inlet is connected to a second air inlet pipeline, the second air inlet pipeline is used to enter air;

[0007] A temperature measuring module, the temperature measuring module is installed at the sample gas outlet of the cyclone refrigerator, and is used to detect the temperature of the sample gas to be discharged;

[0008] An air intake solenoid valve, the air intake solenoid valve is installed on the second air intake pipeline;

[0009] The control device is electrically connected to the cyclone refrigerator, the temperature measuring module and the air inlet solenoid valve, and is used to obtain the temperature detected by the temperature measuring module and adjust the on-off state of the air inlet solenoid valve according to the obtained temperature.

[0010] As an achievable manner, a cyclone cooling tube is provided in the cyclone refrigerator, and the cyclone cooling tube is connected to the air inlet.

[0011] The cyclone refrigerator also includes an air outlet, which includes a hot air outlet and a cold air outlet, and the cold air outlet is arranged on the cyclone refrigeration tube.

[0012] As a feasible manner, the hot air outlet is arranged above the cyclone cooler.

[0013] As an implementable manner, a liquid sealing device is further included, wherein the liquid sealing device is connected to the cyclone refrigerator, and the liquid sealing device is used to maintain the pressure of the sample gas at a set value.

[0014] As an achievable manner, the set value of the sample gas pressure is 75CM water column.

[0015] As a feasible approach, a pressure gauge and a flow meter are also installed on the air outlet pipeline.

[0016] As a feasible manner, a filter is further installed on the gas outlet pipeline, and the filter is used to separate the exhausted sample gas into gas and liquid, or to separate the exhausted sample gas into waste residue.

[0017] As a feasible manner, switch valves are installed on the first air inlet pipeline, between the cyclone cooler and the liquid sealing device, and on the second air inlet pipeline.

[0018] As an implementable manner, the switch valve is in a normally open state.

[0019] According to the technical solution provided in the embodiment of the present application, a temperature measuring module is installed at the sample gas outlet position of the cyclone refrigerator, and the temperature measuring module performs real-time temperature detection on the sample gas coming out of the sample gas outlet position, and the control device obtains the detection temperature of the temperature measuring module, and controls the air inlet solenoid valve according to the obtained temperature of the outlet sample gas, and controls the sample gas temperature of the cyclone refrigerator by controlling the air inlet volume of the air inlet solenoid valve, so that the sample gas generated in the outlet pipeline of the cyclone refrigerator is maintained within the set temperature range, thereby realizing automatic control of the sample gas temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0021] Figure 1 Schematic diagram of the structure of the cyclone refrigeration temperature automatic control system in this embodiment.

[0022] Reference numerals:

[0023] 1- Cyclone refrigerator; 11- first air intake pipeline; 12-air outlet pipe; 13- second air intake line; 14-hot air outlet; 15-cold air outlet; 16-cyclone refrigeration tube; 2- Temperature measurement module; 3- Pressure gauge; 4- Flow meter; 5- Filter; 6-Liquid sealing device; 7-air inlet solenoid valve; 21- first switch valve; 22- third switch valve; 23- second switch valve; 24-Fourth switch valve. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] Please refer to Figure 1 This embodiment provides a cyclone refrigeration temperature automatic control system, including:

[0027] A cyclone refrigerator 1, wherein the cyclone refrigerator 1 is used to cool a sample gas, wherein the cyclone refrigerator 1 comprises a sample gas inlet and a sample gas outlet, wherein the sample gas inlet is connected to a first air inlet pipeline 11 for supplying the sample gas to be cooled, wherein the sample gas outlet is connected to an air outlet pipeline 12 for discharging the cooled sample gas, wherein the cyclone refrigerator 1 further comprises an air inlet, wherein the air inlet is connected to a second air inlet pipeline 13, wherein the second air inlet pipeline 13 is used for introducing air;

[0028] A temperature measuring module 2, which is installed at the sample gas outlet of the cyclone refrigerator 1 and is used to detect the temperature of the sample gas to be discharged;

[0029] An air intake solenoid valve 7, wherein the air intake solenoid valve 7 is installed on the second air intake pipeline 13;

[0030] The control device is electrically connected to the cyclone refrigerator 1, the temperature measuring module 2 and the air inlet solenoid valve 7, and is used to obtain the temperature detected by the temperature measuring module 2 and adjust the on-off state of the air inlet solenoid valve 7 according to the obtained temperature.

[0031] The system provided in this embodiment installs a temperature measuring module 2 at the sample gas outlet position of the cyclone refrigerator 1. The temperature measuring module 2 performs real-time temperature detection on the sample gas coming out of the sample gas outlet position, and the control device obtains the detection temperature of the temperature measuring module 2, and controls the air inlet solenoid valve 7 according to the obtained temperature of the outlet sample gas. The sample gas temperature of the cyclone refrigerator 1 is controlled by controlling the air intake volume of the air inlet solenoid valve 7, so that the sample gas generated by the outlet pipe 12 of the cyclone refrigerator 1 is maintained within the set temperature range, thereby realizing automatic control of the sample gas temperature.

[0032] The control system mainly includes a cyclone refrigerator 1, which includes a sample gas inlet and an air inlet, the sample gas inlet is connected to a first air inlet pipeline 11, and the air inlet is connected to a second air inlet pipeline 13. Switch valves are installed on the first air inlet pipeline 11 and the second air inlet pipeline 13, wherein a first switch valve 21 is installed on the first air inlet pipeline 11, and a second switch valve 23 is installed on the second air inlet pipeline 13. The first switch valve 21 and the second switch valve 23 are both manual valves. The system is safer by manually controlling the on and off of the first air inlet pipeline 11 and the second air inlet pipeline 13. Generally, the first switch valve 21 and the second switch valve 23 are both set to a normally open state, and are closed in special circumstances or when maintenance is required; in addition, an air inlet solenoid valve 7 is also installed on the second air inlet pipeline 13, and the amount of air entering the cyclone refrigerator 1 is realized by the on and off of the solenoid valve, so as to control the cooling effect of the cyclone refrigerator 1 on the sample gas. The sample gas outlet of the cyclone refrigerator 1 is connected to an outlet pipeline 12 , and components such as a temperature measuring module 2 are installed on the outlet pipeline 12 to detect the discharged sample gas, so as to understand the working effect of the cyclone refrigerator 1 .

[0033] The control system in this embodiment is provided with a control device (not shown in the figure), which is connected with the cyclone refrigerator 1 and the temperature measuring module 2 through the control device. The temperature measuring module 2 is installed on the outlet pipe 12 to check the temperature of the discharged sample gas. At the same time, the temperature measuring module 2 is configured with a transmission function to transmit the detected temperature to the control device, so that the control device adjusts the air inlet solenoid valve 7 according to the acquired temperature value. The control device provided in this embodiment can be a PLC (programmable controller) or a DCS (distributed control system). By comparing the detection value of the temperature measuring module 2 with the set value, the on-off of the air inlet solenoid valve 7 is controlled, so that the temperature of the cyclone refrigerator 1 is always kept within the set temperature range, and the automatic control of the sample gas temperature is realized.

[0034] The temperature measuring module 2 provided in this embodiment includes a temperature detection element and a matching temperature transmitter, which can detect the temperature of the outlet pipe 12 and convert the temperature into an electrical signal to transmit to the control device. The temperature measuring module 2 can adopt a PT100 model structure, which is conventional and easy to obtain.

[0035] Furthermore, a cyclone cooling tube 16 is provided in the cyclone refrigerator 1, and the cyclone cooling tube 16 is connected to the air inlet.

[0036] The cyclone refrigerator 1 further includes an air outlet, and the air outlet includes a hot air outlet 14 and a cold air outlet 15 . The cold air outlet 15 is disposed on the cyclone refrigeration tube 16 .

[0037] The cyclone refrigerator 1 provided in this embodiment is provided with a cyclone cooling tube 16 inside. The cyclone cooling tube 16 is also provided with an air inlet and an air outlet. The air inlet is the air inlet of the cyclone refrigerator 1 , and the air outlet is the cold air outlet 15 of the cyclone refrigerator 1 .

[0038] Optionally, the hot air outlet 14 is arranged above the cyclone cooler 1 .

[0039] The cyclone cooler 1 in this embodiment generates hot air and cold air when working, wherein the hot air outlet 14 is arranged at the top to discharge the hot air upward, and the cold air enters the cyclone refrigeration tube 16 downward and is then discharged. This arrangement better meets the hot air and cold air performance and is more convenient when emptying.

[0040] Furthermore, it also includes a liquid sealing device 6, which is connected to the cyclone refrigerator 1 and is used to keep the pressure of the sample gas at a set value.

[0041] The control system provided in this embodiment is also provided with a liquid sealing device 6, through which the pressure of the sample gas entering the cyclone refrigerator 1 is limited and maintained, so that the cyclone refrigerator 1 can cool the sample gas stably and evenly. In addition, a third switch valve 22 is installed on the pipeline between the liquid sealing device 6 and the cyclone refrigerator 1. The third switch valve 22 is also a manual valve and is set to a normally open state for use in special circumstances or maintenance.

[0042] Optionally, the set value of the sample gas pressure is 75CM water column.

[0043] In this embodiment, the pressure value of the sample gas is set to 75 cm of water column according to the requirements of the gas analysis process commonly used in chemical plants. Different sample gas pressure values ​​can be set according to different application scenarios.

[0044] Furthermore, a pressure gauge 3 and a flow meter 4 are installed on the air outlet pipeline 12 .

[0045] refer to Figure 1 As shown, a pressure gauge 3 and a flow meter 4 are also installed on the gas outlet pipeline 12 in the control system provided in this embodiment. The pressure gauge 3 and the flow meter 4 are used to detect the pressure and flow of the output sample gas in real time, so as to understand the situation of the output sample gas in real time.

[0046] Optionally, a filter 5 is further installed on the gas outlet pipeline 12, and the filter 5 is used to separate the exhausted sample gas from gas and liquid, or to separate the exhausted sample gas from waste residue.

[0047] This embodiment also adds a filter 5 structure to the gas outlet pipeline 12. The filter 5 can be a gas-liquid separation device, and the pipeline below it is a liquid pipeline, which separates and discharges the liquid in the output sample gas, and the gas is still output from the gas outlet pipeline 12 to the required place; the filter 5 can also be a waste slag filter, which removes impurities in the output sample gas, and the pipeline below it is a waste slag output pipeline. The different working requirements of the filter 5 are determined according to the type of sample gas and the required sample gas. At the same time, a fourth switch valve 24 is installed on the output pipeline below the filter 5, and the pipeline is controlled to a certain extent by the fourth switch valve 24. The fourth switch valve 24 is a manual valve, which is also set to a normally open state.

[0048] Optionally, switch valves are installed on the first air inlet pipeline 11, between the cyclone refrigerator 1 and the liquid sealing device 6, and on the second air inlet pipeline 13.

[0049] refer to Figure 1 As shown, in this embodiment, corresponding switch valves are additionally provided on each pipeline of the above control system, as described above for details, and the switch valves are set to a normally open state.

[0050] The automatic control system provided in this embodiment obtains the temperature of the sample gas output by the cyclone refrigerator 1 and compares it with the set value through a DCS or PLC control device, and automatically controls the connection or disconnection of the air inlet solenoid valve 7 based on the comparison result, so that the output sample gas temperature of the cyclone refrigerator 1 is always maintained within the set range, thereby realizing automatic temperature control. In addition, this method is relatively timely in detecting and feedbacking the sample gas, and can remotely and quickly perform temperature control and response.

[0051] It should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used above to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; the orientation terms "inside" and "outside" refer to the inside and outside relative to the contours of the components themselves. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0053] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A cyclone refrigeration temperature automatic control system, characterized in that: include: A cyclone refrigerator, the cyclone refrigerator is used to cool the sample gas, the cyclone refrigerator comprises a sample gas inlet and a sample gas outlet, the sample gas inlet is connected to a first air inlet pipeline for the sample gas to be cooled to enter, the sample gas outlet is connected to an air outlet pipeline for discharging the cooled sample gas, the cyclone refrigerator also comprises an air inlet, the air inlet is connected to a second air inlet pipeline, the second air inlet pipeline is used to enter air; A temperature measuring module, the temperature measuring module is installed at the sample gas outlet of the cyclone refrigerator, and is used to detect the temperature of the sample gas to be discharged; An air intake solenoid valve, the air intake solenoid valve is installed on the second air intake pipeline; The control device is electrically connected to the cyclone refrigerator, the temperature measuring module and the air inlet solenoid valve, and is used to obtain the temperature detected by the temperature measuring module and adjust the on-off state of the air inlet solenoid valve according to the obtained temperature.

2. The cyclone refrigeration temperature automatic control system according to claim 1, characterized in that: The cyclone refrigerator is provided with a cyclone cooling pipe, and the cyclone cooling pipe is connected to the air inlet. The cyclone refrigerator also includes an air outlet, which includes a hot air outlet and a cold air outlet, and the cold air outlet is arranged on the cyclone refrigeration tube.

3. The cyclone refrigeration temperature automatic control system according to claim 2, characterized in that: The hot air outlet is arranged above the cyclone cooler.

4. The cyclone refrigeration temperature automatic control system according to claim 1, characterized in that: It also includes a liquid sealing device, which is connected to the cyclone refrigerator and is used to keep the pressure of the sample gas at a set value.

5. The cyclone refrigeration temperature automatic control system according to claim 4, characterized in that: The set value of the sample gas pressure is 75CM water column.

6. The cyclone refrigeration temperature automatic control system according to claim 1, characterized in that: A pressure gauge and a flow meter are also installed on the air outlet pipeline.

7. The cyclone refrigeration temperature automatic control system according to claim 1, characterized in that: A filter is also installed on the gas outlet pipeline, and the filter is used to separate the discharged sample gas into gas and liquid, or to separate the discharged sample gas into waste residue.

8. The cyclone refrigeration temperature automatic control system according to claim 4, characterized in that: On-off valves are installed on the first air inlet pipeline, between the cyclone cooler and the liquid sealing device, and on the second air inlet pipeline.

9. The cyclone refrigeration temperature automatic control system according to claim 8, characterized in that: The switch valve is in a normally open state.

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