Multifunctional thermotechnical experiment platform

Abstract

The invention provides a multifunctional thermotechnical experiment platform, and relates to the technical field of thermotechnical experiment platforms, the multifunctional thermotechnical experiment platform comprises a box body assembly, a compressor refrigerating unit and a heat pump unit are fixedly installed on the two sides of the interior of the box body assembly respectively, the box body assembly comprises a cabinet body, and flow control assemblies are fixedly installed on the two sides of the upper surface of the cabinet body; the flow control assemblies on the two sides are communicated with a compressor refrigerating unit and a heat pump unit in the cabinet body respectively. The middle position of the upper surface of the cabinet body is fixedly provided with a placing table used for placing an experiment workpiece, two sides of the upper surface of the cabinet body are fixedly provided with adjusting assemblies, a multifunctional air exhaust assembly used for carrying out an auxiliary experiment is rotatably arranged between the upper ends of the adjusting assemblies, and the air exhaust assembly is provided with a hook. By adopting the adjusting assembly and the air exhaust assembly, heat generated during an experiment can be conveniently exhausted, harm to personnel is reduced, and an external sensor can be conveniently hung and placed.

Description

Technical Field

[0001] The present invention belongs to the technical field of thermal engineering experimental platforms, and particularly relates to a multifunctional thermal engineering experimental platform. Background Art

[0002] Thermal engineering experiments are an experimental science that studies the basic laws of the properties of substances, heat transfer, flow, and thermodynamics in thermal engineering processes. The purpose is to obtain physical and chemical change information of thermal engineering processes through experiments, provide a basis for engineering design and optimization, and improve the efficiency, reliability, and safety of thermal engineering processes. Thermal engineering experiments are widely used in fields such as energy, power, aerospace, and transportation, mainly for measuring and testing thermal engineering parameters during the energy conversion and utilization process, such as temperature, pressure, flow rate, combustion, etc., to evaluate the thermal efficiency and safety of energy systems. In thermal engineering experiments, common experimental methods include the thermocouple method, infrared temperature measurement method, ultrasonic temperature measurement method, liquid crystal temperature measurement method, optical fiber temperature measurement method, laser temperature measurement method, thermal imager method, thermal scanning method, fine wire velocity measurement method, PIV velocity measurement method, laser Doppler velocity measurement method, etc. These methods can obtain information such as thermodynamic parameters, physical properties, and motion states in real time and accurately; Due to the lack of an air extraction component in the existing thermal engineering experimental platform, during thermal radiation experiments, heat will radiate outward, causing harm to experimental personnel. At the same time, a large number of sensors are used during the experimental process. Due to the lack of a design for a sensor placement component in the existing thermal engineering experimental platform, sensors are often placed on the experimental platform or held by hand, which is rather inconvenient. Summary of the Invention

[0003] The present invention provides a multifunctional thermal engineering experimental platform to solve at least one of the above-mentioned technical problems.

[0004] To solve the above technical problems, the present invention discloses a multifunctional thermal engineering experimental platform, which includes a box body component. On both sides inside the box body component, a compression refrigeration unit and a heat pump unit are respectively fixedly installed. The box body component includes a cabinet, and on both sides of the upper surface of the cabinet, a flow control component is fixedly installed. The flow control components on both sides are respectively connected to the compression refrigeration unit and the heat pump unit inside the cabinet; In the middle position of the upper surface of the cabinet, a placement table for placing experimental workpieces is fixedly installed. On both sides of the upper surface of the cabinet, an adjustment component is fixedly installed. Between the upper ends of the adjustment components, a multifunctional air extraction component for assisting experiments is rotatably installed. The power end of the air extraction component is fixedly installed at the middle position on the rear side of the cabinet, and a hook is installed on the air extraction component.

[0005] Preferably, partitions are fixedly installed on both sides of the middle position of the cabinet body. The compressor refrigeration unit and the heat pump unit are respectively fixedly installed on one side of the partition inside the cabinet body. The front side of the cabinet body is an open structure, and tracks are provided at both the upper and lower ends of the open structure. Sliding doors are slidably connected to both sides of the inside of the track. Universal wheels for movement are fixedly installed at the four corners of the lower end of the cabinet body.

[0006] Preferably, connectors for installing the adjustment components are fixedly installed on both sides of the upper surface of the cabinet body. A T-shaped groove is provided at the upper end of the connector, and a waist-shaped hole is provided on one side of the connector. The waist-shaped hole communicates with the T-shaped groove. The adjustment component is slidably clamped inside the T-shaped groove.

[0007] Preferably, the adjustment component includes a slider. The slider is slidably connected inside the T-shaped groove. A fixing screw is threadedly connected to one side of the slider, and the fixing screw passes through the waist-shaped hole and extends to the outside of the connector. One end of the fixing screw is used for pressing and cooperating with the connector. An adjustment cylinder is fixedly installed at the upper end of the slider. A connecting block is fixedly installed at the output end of the adjustment cylinder. Both sides of the air extraction component are respectively rotatably installed on the two connecting blocks.

[0008] Preferably, the air extraction component includes an air extraction unit. An air extraction pipe is fixedly installed at the input end of the air extraction unit, and an adjustment plate is fixedly installed at the other end of the air extraction pipe. The adjustment plate is rotatably installed between the two adjustment components. An air extraction groove is annularly provided on one side of the adjustment plate. The air extraction groove communicates with the air extraction pipe. Shaft rods are fixedly installed on both sides of the adjustment plate. The two shaft rods are respectively rotatably installed on the two adjustment components. A limit screw is threadedly connected to one end of the shaft rod. The limit screw is used for pressing and cooperating with the adjustment component. Hooks are fixedly installed in an array state at the middle position of the adjustment plate.

[0009] Preferably, the flow control component includes a pressure tank. The pressure tank is fixedly installed on the upper surface of the cabinet body. A connecting pipe is fixedly installed at the input end of the pressure tank. The two flow control components on both sides are respectively connected to the compressor refrigeration unit and the heat pump unit through the connecting pipe. An output pipe with a connecting flange is fixedly installed on one side of the pressure tank. An opening and closing valve is fixedly installed on the output pipe. An electronic pressure regulating valve is fixedly installed at the upper end of the pressure tank. The output end of the electronic pressure regulating valve is communicated with a negative pressure tank through a communicating pipe. A reflux pump is fixedly installed at the output end of the negative pressure tank. A reflux pipe is fixedly installed at the output end of the reflux pump. The two flow control components are respectively connected to the reflux ends of the compressor refrigeration unit and the heat pump unit through the reflux pipe. The negative pressure tank is fixedly installed on the upper surface of the cabinet body on one side of the pressure tank.

[0010] Preferably, the suction pipe includes a first suction pipe and a second suction pipe. The first suction pipe is communicated with the suction tank, and the second suction pipe is communicated with the suction unit. A heat exchange box is arranged between the first suction pipe and the second suction pipe. A spiral heat exchange tube is installed in the heat exchange box. The inlet end and the outlet end of the spiral heat exchange tube are both communicated with the heat exchange medium storage tank and form a heat exchange loop. A plurality of water collecting ports are arranged on the heat exchange box in a uniform annular arrangement. The water collecting ports are communicated with an external water collecting tank through water collecting hoses. A hydrophilic selective permeable membrane is arranged in the water collecting ports. A section of the second suction pipe located in the heat exchange box is provided with a curved surface diversion head, and a hydrophobic selective permeable membrane is arranged on the curved surface diversion head.

[0011] Preferably, it further includes a heat exchange box fault monitoring system for monitoring the working state of the heat exchange box. The heat exchange box fault monitoring system includes: A mass flow sensor is arranged in the spiral heat exchange tube for detecting the mass flow of the medium in the spiral heat exchange tube. A first temperature sensor is arranged at the inlet end of the spiral heat exchange tube for detecting the temperature of the medium at the inlet end of the spiral heat exchange tube. A second temperature sensor is arranged at the outlet end of the spiral heat exchange tube for detecting the temperature of the medium at the outlet end of the spiral heat exchange tube. A first water pressure sensor is arranged at the inlet end of the spiral heat exchange tube for detecting the pressure at the inlet end of the spiral heat exchange tube. A second water pressure sensor is arranged at the outlet end of the spiral heat exchange tube for detecting the pressure at the outlet end of the spiral heat exchange tube. A controller and an alarm. The controller is electrically connected to the mass flow sensor, the first temperature sensor, the second temperature sensor, the first water pressure sensor, the second water pressure sensor and the alarm. The controller controls the alarm to alarm based on the mass flow sensor, the first temperature sensor, the second temperature sensor, the first water pressure sensor and the second water pressure sensor, including the following steps: Based on the mass flow sensor, the first temperature sensor, the second temperature sensor, the first water pressure sensor and the second water pressure sensor, calculate the actual fault coefficient of the heat exchange box: ; where is the actual fault coefficient of the heat exchange box in the i-th detection period, is the weight value of the heat exchange performance, is the reference heat transfer coefficient of the spiral heat exchange tube, is the surface area of the spiral heat exchange tube, is the preset reference temperature after the medium in the spiral heat exchange tube is cooled, is the natural logarithm with e as the base, is the detection value of the mass flow sensor in the i-th detection period, is the specific heat capacity of the medium in the spiral heat exchange tube, is the detection value of the first temperature sensor in the i-th detection cycle, is the detection value of the second temperature sensor in the i-th detection cycle, and lg is the logarithm with base 10, is the detection value of the first water pressure sensor in the i-th detection cycle, is the detection value of the second water pressure sensor in the i-th detection cycle, is the reference pressure difference at both ends of the spiral heat exchange tube, is the weight value of the performance of the selective permeable membrane, is the total usage duration of the hydrophilic selective permeable membrane up to the i-th detection cycle, is the reference usage duration of the hydrophilic selective permeable membrane, is the total usage duration of the hydrophobic selective permeable membrane up to the i-th detection cycle, is the reference usage duration of the hydrophobic selective permeable membrane; The controller compares the actual failure coefficient of the heat exchange box in the i-th detection cycle. When the actual failure coefficient of the heat exchange box in the i-th detection cycle is greater than the preset failure coefficient, the controller controls the alarm to give an alarm prompt.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) When the present invention is in use, according to the usage requirements, the position of the air extraction component is adjusted through the adjustment component, and the orientation of the air extraction component is adjusted. And during the experiment, the workpiece is placed on the placement table, and the cold source is provided by the compression refrigeration unit, and the heat source is provided by the heat pump unit. And the cold source and the heat source are adjusted in flow rate through the flow control component and then used for the thermal engineering experiment of the workpiece, which is convenient for adjustment according to different requirements. And during the experiment, through the air extraction component, the rising hot air is extracted and processed, reducing the harm to the experimental personnel caused by heat radiation during the experiment. And the design of the hook also facilitates the hanging and placement of external accessories such as sensors, without the need to hold them by hand, which is convenient for operation, increases the functionality during use, and is convenient for use during the thermal engineering experiment; By adopting the adjustment component and the air extraction component, the present invention not only facilitates the extraction of the heat generated during the experiment, reducing the harm to personnel, but also facilitates the hanging and placement of external sensors. Through the flow control component, it is convenient to control the flow rates of the heat source and the cold source, and has strong applicability and diverse functions.

[0013] (2) The design of the heat exchange box of the present invention can prevent excessive water vapor from entering the air extraction unit and causing corrosion damage to the air extraction unit, extending the service life of the air extraction unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the multi-functional thermal engineering experiment platform of the present invention; Figure 2 This is a schematic diagram of the structure of the box assembly of the present invention; Figure 3 This is a three-dimensional schematic diagram of the multi-functional thermal engineering experiment platform of the present invention; Figure 4 This is a schematic diagram of the installation position of the connecting piece of the present invention; Figure 5 This is a schematic diagram of the structure of the adjusting assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the air extraction assembly of the present invention; Figure 7 This is a schematic diagram of the installation position of the air extraction assembly of the present invention; Figure 8 This is a schematic diagram of the structure of the flow control assembly of the present invention; Figure 9 This is a schematic diagram of the structure of the heat exchange box of the present invention.

[0015] In the figure: 1. Box assembly; 101. Cabinet; 102. Placing table; 103. Partition board; 104. Track; 105. Folding door; 106. Universal wheel; 107. Connecting piece; 108. T-shaped groove; 109. Kidney-shaped hole; 2. Compressor refrigeration unit; 3. Heat pump unit; 4. Flow control assembly; 401. Pressure tank; 402. Connecting pipe; 403. Output pipe; 404. Opening and closing valve; 405. Electronic pressure regulating valve; 406. Negative pressure tank; 407. Return pump; 408. Return pipe; 5. Adjusting assembly; 501. Slide block; 502. Fixed screw; 503. Adjusting cylinder; 504. Connecting block; 6. Air extraction assembly; 601. Air extraction unit; 602. Air extraction pipe; 6020. Air extraction pipe one; 6021. Air extraction pipe two; 603. Adjusting plate; 604. Air extraction groove; 605. Shaft rod; 606. Limit screw; 607. Hook; 7. Heat exchange box; 701. Spiral heat exchange pipe; 702. Water collecting port; 703. Water collecting hose; 704. Hydrophilic selective permeable membrane; 705. Curved flow guiding head; 706. Hydrophobic selective permeable membrane. Specific embodiments

[0016] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0017] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the meaning of order or sequence, nor are they used to limit the present invention. They are merely used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0018] The present invention provides the following embodiments Embodiment 1 The embodiment of the present invention provides a multifunctional thermal engineering experiment platform, as Figures 1-9 shown, which includes a box body assembly 1. On both sides inside the box body assembly 1, a compressor refrigeration unit 2 and a heat pump unit 3 are respectively fixedly installed. The box body assembly 1 includes a cabinet 101, and on both sides of the upper surface of the cabinet 101, a flow control assembly 4 is fixedly installed. The flow control assemblies 4 on both sides are respectively communicated with the compressor refrigeration unit 2 and the heat pump unit 3 inside the cabinet 101; At the middle position of the upper surface of the cabinet 101, a placement table 102 for placing experimental workpieces is fixedly installed. On both sides of the upper surface of the cabinet 101, an adjustment assembly 5 is fixedly installed. Between the upper ends of the adjustment assembly 5, a multifunctional air extraction assembly 6 for assisting in experiments is rotatably installed. The power end of the air extraction assembly 6 is fixedly installed at the middle position of the rear side of the cabinet 101, and a hook 607 is installed on the air extraction assembly 6.

[0019] The working principle and beneficial effects of the above technical solution are as follows: When in use, according to the usage requirements, the position and orientation of the air extraction assembly 6 are adjusted through the adjustment assembly 5. And during the experiment, the workpiece is placed on the placement table 102, and a cold source is provided by the compressor refrigeration unit 2, and a heat source is provided by the heat pump unit 3. The cold source and the heat source are adjusted in flow rate through the flow control assembly 4 and then used for thermal engineering experiments on the workpiece, which is convenient for adjusting according to different requirements. And during the experiment, through the air extraction assembly 6, the rising hot air is extracted and processed to reduce the harm to the experimental personnel caused by heat radiation during the experiment. The design of the hook 607 also facilitates the hanging and placement of accessories such as sensors used externally, without the need to hold them by hand, which is convenient for operation, increases the functionality during use, and is convenient for use during thermal engineering experiments; By adopting the adjusting component 5 and the air extraction component 6, the present invention not only facilitates the extraction of heat generated during experiments, reduces the harm to personnel, but also facilitates the hanging placement of external sensors. Through the flow control component, it is convenient to control the flow rates of the heat source and the cold source, with strong applicability and diverse functions.

[0020] Embodiment 2 On the basis of Embodiment 1, partition plates 103 are fixedly installed on both sides of the middle position of the cabinet body 101. The compressor refrigeration unit 2 and the heat pump unit 3 are respectively fixedly installed on one side of the partition plate 103 inside the cabinet body 101. One side of the front of the cabinet body 101 is an open structure, and tracks 104 are provided at both the upper and lower ends of the open structure. Sliding doors 105 of a push-pull type are slidably connected to both sides inside the tracks 104. Universal wheels 106 for movement are fixedly installed at the four corners of the lower end of the cabinet body 101.

[0021] The working principle and beneficial effects of the above technical solution are as follows: Through the design of the universal wheels 106, the present invention facilitates the flexible movement of the multifunctional thermal engineering experiment platform. And through the tracks 104 and the folding doors 105, during experiments, it is convenient to protect the compressor refrigeration unit 2 and the heat pump unit 3. And through the partition plates 103, it is convenient to form a storage space in the middle position of the cabinet body 101, facilitating the placement of external items.

[0022] Embodiment 3 On the basis of Embodiment 1, connection parts 107 for installing the adjusting component 5 are fixedly installed on both sides of the upper surface of the cabinet body 101. A T-shaped groove 108 is provided at the upper end of the connection part 107, and a kidney-shaped hole 109 is provided on one side of the connection part 107. The kidney-shaped hole 109 communicates with the T-shaped groove 108. The adjusting component 5 is slidably clamped inside the T-shaped groove 108; The adjusting component 5 includes a slider 501. The slider 501 is slidably connected inside the T-shaped groove 108. A fixing screw 502 is threadedly connected to one side of the slider 501, and the fixing screw 502 passes through the kidney-shaped hole 109 and extends to the outside of the connection part 107. One end of the fixing screw 502 is used for pressing and cooperating with the connection part 107; An adjusting cylinder 503 is fixedly installed at the upper end of the slider 501. An output end of the adjusting cylinder 503 is fixedly installed with a connection block 504. Both sides of the air extraction component 6 are respectively rotatably installed on the two connection blocks 504.

[0023] The working principle and beneficial effects of the above technical solution are as follows: The design of the connecting member 107 and the T-shaped groove 108 in the present invention facilitates the installation of the adjusting assembly 5. During use, it is convenient to adjust the position of the adjusting assembly 5. After adjustment, by pressing one side of the adjusting assembly 5 against one side of the waist-shaped hole 109, it is convenient to fix the adjusting assembly 5. Through the slider 501, the adjusting assembly 5 can slide flexibly along the T-shaped groove 108 on the connecting member 107, facilitating the adjustment of the position of the adjusting assembly 5. After adjustment, the fixing screw 502 is used to fix the adjusting assembly 5. The design of the adjusting cylinder 503 facilitates the adjustment of the height of the air extraction end of the air extraction assembly 6 during the thermal experiment, with strong applicability. The design of the adjusting assembly 5 facilitates the flexible adjustment and fixation of the position of the air extraction assembly 6.

[0024] Example 4 On the basis of Example 1, the air extraction assembly 6 includes an air extraction unit 601. An air extraction pipe 602 is fixedly installed at the input end of the air extraction unit 601, and the other end of the air extraction pipe 602 is fixedly installed with an adjusting plate 603. The adjusting plate 603 is rotatably installed between the two adjusting assemblies 5. An air extraction groove 604 is annularly formed on one side of the adjusting plate 603, and the air extraction groove 604 is communicated with the air extraction pipe 602. Shaft rods 605 are fixedly installed on both sides of the adjusting plate 603, and the two shaft rods 605 are respectively rotatably installed on the two adjusting assemblies 5. One end of the shaft rod 605 is threadedly connected with a limit screw 606, and the limit screw 606 is used for pressing and cooperating with the adjusting assembly 5. Hook-shaped members 607 are fixedly installed in an array state at the middle position of the adjusting plate 603.

[0025] The working principle and beneficial effects of the above technical solution: The design of the air extraction unit 601 and the adjusting plate 603 in the present invention facilitates the extraction of the rising hot air generated during the thermal experiment and processes it through the air extraction unit 601, reducing the thermal radiation damage of the hot air to external personnel. Specifically, the air extraction operation is carried out through the air extraction groove 604 and the air extraction pipe 602. Shaft rods 605 are fixedly installed on both sides of the adjusting plate 603, and the shaft rods 605 are rotatably installed on the connecting block 504. One end of the shaft rod 605 is threadedly connected with a limit screw 606, and one end of the limit screw 606 is used for pressing against one side of the connecting block 504. Hook-shaped members 607 are fixedly installed in an array state at the middle position of the adjusting plate 603. Through the shaft rod 605, it is convenient to flexibly adjust the inclination angle of the adjusting plate 603, so that the adjusting plate 603 is in a horizontal, inclined or vertical state for different thermal experiments. After adjusting the adjusting plate 603, it is fixed through the limit screw 606. The design of the hook-shaped members 607 facilitates the placement of various external sensors, increasing the versatility during the thermal experiment.

[0026] Example 5 On the basis of Embodiment 1, the flow control component 4 includes a pressure tank 401. The pressure tank 401 is fixedly installed on the upper surface of the cabinet body 101. A connecting pipe 402 is fixedly installed at the input end of the pressure tank 401. The two flow control components 4 on both sides are respectively communicated with the compression refrigeration unit 2 and the heat pump unit 3 through the connecting pipe 402. A output pipe 403 with a connecting flange is fixedly installed on one side of the pressure tank 401. A closing valve 404 is fixedly installed on the output pipe 403. An electronic pressure regulating valve 405 is fixedly installed at the upper end of the pressure tank 401. The output end of the electronic pressure regulating valve 405 is communicated with a negative pressure tank 406 through a connecting pipe 409. A reflux pump 407 is fixedly installed at the output end of the negative pressure tank 406. A reflux pipe 408 is fixedly installed at the output end of the reflux pump 407. The two flow control components 4 are respectively communicated with the reflux ends of the compression refrigeration unit 2 and the heat pump unit 3 through the reflux pipe 408. The negative pressure tank 406 is fixedly installed on the upper surface of the cabinet body 101 on one side of the pressure tank 401.

[0027] The working principle and beneficial effects of the above technical solution are as follows: During the thermal experiment, the heat source and the cold source are utilized. The design of the pressure tank 401 facilitates the voltage stabilization of the heat source and the cold source. The design of the electronic pressure regulating valve 405 facilitates the adjustment of the pressure inside the pressure tank 401, and it is convenient to adjust the flow rates of the heat source and the cold source according to different thermal experiment requirements. The design of the negative pressure tank 406 facilitates the release of excessive pressure inside the pressure tank 401. The released pressure is re-circulated to the compression refrigeration unit 2 or the heat pump unit 3 through the reflux pump 407 and the reflux pipe 408, realizing the recycling of the cold source and the heat source. The negative pressure tank 406 is fixedly installed on the upper surface of the cabinet body 101 on one side of the pressure tank 401, and a connecting pipe 409 is fixedly installed between the electronic pressure regulating valve 405 and the negative pressure tank 406. Through the connecting pipe 409, it is convenient for the pressure inside the pressure tank 401 to enter the inside of the negative pressure tank 406 for convenient reflux.

[0028] Embodiment 6 On the basis of Embodiment 1, the air extraction pipe 602 includes an air extraction pipe one 6020 and an air extraction pipe two 6021. The air extraction pipe one 6020 is communicated with the air extraction groove 604, and the air extraction pipe two 6021 is communicated with the air extraction unit 601. A heat exchange box 7 is provided between the air extraction pipe one 6020 and the air extraction pipe two 6021. A spiral heat exchange tube 701 is installed inside the heat exchange box 7. The inlet end and the outlet end of the spiral heat exchange tube 701 are both communicated with the heat exchange medium storage tank and form a heat exchange loop. A number of uniformly annularly arranged water collecting ports 702 are provided on the heat exchange box 7. The water collecting ports 702 are communicated with an external water collecting tank through a water collecting hose 703. A hydrophilic selective permeable membrane 704 is provided inside the water collecting ports 702; A curved surface diversion head 705 is provided on a section of the air extraction pipe two 6021 located inside the heat exchange box 7. A hydrophobic selective permeable membrane 706 is provided on the curved surface diversion head 705.

[0029] The working principle and beneficial effects of the above technical solution are as follows: The hot air inhaled by the first suction pipe 6020 enters the heat exchange box 7 and exchanges heat with the medium in the spiral heat exchange pipe 701 to cool down. After cooling, a part of the water vapor in the hot air turns into water and accumulates on the curved diversion head 705, and then flows into the water collection port 702 under the action of gravity and finally enters the external water collection tank. The gas that has not become water vapor enters the second suction pipe 6021 through the hydrophobic selective permeable membrane 706 and finally enters the air extraction unit 601. The design of the heat exchange box 7 can prevent excessive water vapor from entering the air extraction unit 601 and causing corrosion damage to the air extraction unit 601, thus extending the service life of the air extraction unit 601.

[0030] Embodiment 7 On the basis of Embodiment 6, it further includes a heat exchange box fault monitoring system, which is used to monitor the working state of the heat exchange box 7. The heat exchange box fault monitoring system includes: A mass flow sensor, which is arranged in the spiral heat exchange pipe 701 and is used to detect the mass flow of the medium in the spiral heat exchange pipe 701; A first temperature sensor, which is arranged at the inlet end of the spiral heat exchange pipe 701 and is used to detect the temperature of the medium at the inlet end of the spiral heat exchange pipe 701; A second temperature sensor, which is arranged at the outlet end of the spiral heat exchange pipe 701 and is used to detect the temperature of the medium at the outlet end of the spiral heat exchange pipe 701; A first water pressure sensor, which is arranged at the inlet end of the spiral heat exchange pipe 701 and is used to detect the pressure at the inlet end of the spiral heat exchange pipe 701; A second water pressure sensor, which is arranged at the outlet end of the spiral heat exchange pipe 701 and is used to detect the pressure at the outlet end of the spiral heat exchange pipe 701; A controller and an alarm. The controller is electrically connected to the mass flow sensor, the first temperature sensor, the second temperature sensor, the first water pressure sensor, the second water pressure sensor and the alarm. The controller controls the alarm to alarm based on the mass flow sensor, the first temperature sensor, the second temperature sensor, the first water pressure sensor and the second water pressure sensor, including the following steps: Based on the mass flow sensor, the first temperature sensor, the second temperature sensor, the first water pressure sensor and the second water pressure sensor, calculate the actual fault coefficient of the heat exchange box 7: ; where is the actual fault coefficient of the heat exchange box 7 in the i-th detection period, is the weight value of the heat exchange performance, is the reference heat transfer coefficient of the spiral heat exchange pipe 701, is the surface area of the spiral heat exchange pipe 701, is the preset reference temperature after the medium in the spiral heat exchange pipe 701 is cooled, is the natural logarithm with e as the base, is the detected value of the mass flow sensor in the i-th detection cycle, is the specific heat capacity of the medium in the spiral heat exchange tube 701, is the detected value of the first temperature sensor in the i-th detection cycle, is the detected value of the second temperature sensor in the i-th detection cycle, and lg is the logarithm to the base 10, is the detected value of the first water pressure sensor in the i-th detection cycle, is the detected value of the second water pressure sensor in the i-th detection cycle, is the reference pressure difference at both ends of the spiral heat exchange tube 701, is the weight value of the performance of the selective permeable membrane, is the total usage duration of the hydrophilic selective permeable membrane 704 up to the i-th detection cycle, is the reference usage duration of the hydrophilic selective permeable membrane 704, is the total usage duration of the hydrophobic selective permeable membrane 706 up to the i-th detection cycle, is the reference usage duration of the hydrophobic selective permeable membrane 706; The controller compares the actual fault coefficient of the heat exchange box 7 in the i-th detection cycle. When the actual fault coefficient of the heat exchange box 7 in the i-th detection cycle is greater than the preset fault coefficient, the controller controls the alarm to give an alarm prompt.

[0031] The working principle and beneficial effects of the above technical solution are as follows: Through the collaborative work of multiple sensors, the real-time monitoring of the operating state of the heat exchange box is realized, potential problems are discovered in a timely manner. Based on the calculation formula of the actual fault coefficient, the fault type and severity can be accurately judged, the maintenance efficiency is improved, an alarm is issued before the fault occurs, the interruption of the experiment or safety accidents caused by equipment failures are avoided. Through regular monitoring and maintenance, the service life of the heat exchange box and related components is extended, and the maintenance cost is reduced.

[0032] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A multifunctional thermal experiment platform, characterized by: The box assembly (1) comprises a compressor refrigeration unit (2) and a heat pump unit (3) respectively fixedly mounted on two sides of the box assembly (1), the box assembly (1) comprises a cabinet (101), and flow control units (4) are fixedly mounted on both sides of the upper surface of the cabinet (101), and the flow control units (4) on both sides are respectively connected to the compressor refrigeration unit (2) and the heat pump unit (3) inside the cabinet (101); A placement table (102) for placing experimental workpieces is fixedly installed in the middle position of the upper surface of the cabinet (101), and adjustment components (5) are fixedly installed on both sides of the upper surface of the cabinet (101). A multifunctional air extraction component (6) for performing auxiliary experiments is rotatably installed between the upper ends of the adjustment components (5). The power end of the air extraction component (6) is fixedly installed in the middle position of the rear side of the cabinet (101), and a hook (607) is installed on the air extraction component (6).

2. A multifunctional thermal experiment platform according to claim 1, characterized in that: Partitions (103) are fixedly installed on both sides of the middle position of the cabinet (101); the compressor refrigeration unit (2) and the heat pump unit (3) are respectively fixedly installed inside the cabinet (101) on one side of the partition (103); the front side of the cabinet (101) is an open structure, and tracks (104) are provided at the upper and lower ends of the opening structure; both sides of the track (104) are slidably connected with push-pull folding doors (105); and universal wheels (106) for movement are fixedly installed at the four corners of the lower end of the cabinet (101).

3. A multifunctional thermal experiment platform according to claim 1, characterized in that: Connecting pieces (107) for mounting the adjusting assembly (5) are fixedly mounted on both sides of the upper surface of the cabinet (101); a T-shaped slot (108) is provided at the upper end of the connecting piece (107); and a waist-shaped hole (109) is provided on one side of the connecting piece (107); the waist-shaped hole (109) is connected to the T-shaped slot (108); and the adjusting assembly (5) is slidably engaged in the interior of the T-shaped slot (108).

4. A multifunctional thermal experiment platform according to claim 3, characterized in that: The adjustment assembly (5) comprises a slider (501), the slider (501) is slidably connected to the inside of the T-slot (108), a fixing screw (502) is threadedly connected to one side of the slider (501), and the fixing screw (502) passes through the waist-shaped hole (109) and extends to the outside of the connecting piece (107), and one end of the fixing screw (502) is used for press-fitting with the connecting piece (107); An adjusting cylinder (503) is fixedly mounted on the upper end of the sliding block (501), a connecting block (504) is fixedly mounted on the output end of the adjusting cylinder (503), and two sides of the air extraction component (6) are rotatably mounted on the two connecting blocks (504) respectively.

5. The multifunctional thermal experiment platform according to claim 1, characterized in that: The exhaust assembly (6) comprises an exhaust unit (601), an exhaust pipe (602) is fixedly mounted at the input end of the exhaust unit (601), and an adjustment plate (603) is fixedly mounted at the other end of the exhaust pipe (602), the adjustment plate (603) is rotatably mounted between the two adjustment components (5), an exhaust groove (604) is provided in an annular shape on one side of the adjustment plate (603), the exhaust groove (604) is connected to the exhaust pipe (602), shafts (605) are fixedly mounted on both sides of the adjustment plate (603), the two shafts (605) are rotatably mounted on the two adjustment components (5), one end of the shaft (605) is threadedly connected to a limit screw (606), the limit screw (606) is used to be pressed and matched with the adjustment component (5), and a hook (607) is fixedly mounted in an array state at the middle position of the adjustment plate (603).

6. The multifunctional thermal experiment platform according to claim 1, characterized in that: The flow control assembly (4) comprises a pressure tank (401), the pressure tank (401) being fixedly mounted on the upper surface of the cabinet (101), a connecting pipe (402) being fixedly mounted on the input end of the pressure tank (401), and the flow control assemblies (4) on both sides are respectively connected to the compressor refrigeration unit (2) and the heat pump unit (3) through the connecting pipes (402), and an output pipe (403) with a connecting flange is fixedly mounted on one side of the pressure tank (401), an on-off valve (404) is fixedly mounted on the output pipe (403), and the upper end of the pressure tank (401) is fixedly mounted with a connecting pipe (404). An electronic pressure regulating valve (405) is installed; the output end of the electronic pressure regulating valve (405) is connected to a negative pressure tank (406) via a connecting pipe (409); a reflux pump (407) is fixedly installed at the output end of the negative pressure tank (406); a reflux pipe (408) is fixedly installed at the output end of the reflux pump (407); two flow control components (4) are respectively connected to the reflux ends of the compressor refrigeration unit (2) and the heat pump unit (3) via the reflux pipe (408); and the negative pressure tank (406) is fixedly installed on the upper surface of the cabinet (101) and located on one side of the pressure tank (401).

7. The multifunctional thermal experiment platform according to claim 5, characterized in that: The exhaust pipe (602) comprises an exhaust pipe 1 (6020) and an exhaust pipe 2 (6021), the exhaust pipe 1 (6020) is connected to the exhaust tank (604), the exhaust pipe 2 (6021) is connected to the exhaust unit (601), a heat exchange box (7) is provided between the exhaust pipe 1 (6020) and the exhaust pipe 2 (6021), a spiral heat exchange tube (701) is installed in the heat exchange box (7), the inlet end and the outlet end of the spiral heat exchange tube (701) are both connected to the heat exchange medium storage box to form a heat exchange loop, a plurality of water collection ports (702) evenly arranged in an annular pattern are provided on the heat exchange box (7), the water collection ports (702) are connected to an external water collection tank through a water collection hose (703), and a hydrophilic selective permeable membrane (704) is provided in the water collection port (702); A section of the second exhaust pipe (6021) located inside the heat exchange box (7) is provided with a curved flow guide head (705), and a hydrophobic selective permeable membrane (706) is provided on the curved flow guide head (705).

8. The multifunctional thermal experiment platform according to claim 7, characterized in that: It also includes a heat exchange box fault monitoring system, which is used to monitor the working state of the heat exchange box (7). The heat exchange box fault monitoring system includes: A mass flow sensor, arranged in the spiral heat exchange tube (701), and used to detect the mass flow of the medium in the spiral heat exchange tube (701); Temperature sensor 1, arranged at the inlet end of the spiral heat exchange tube (701), and used to detect the temperature of the medium at the inlet end of the spiral heat exchange tube (701); A second temperature sensor is arranged at the outlet end of the spiral heat exchange tube (701) and is used to detect the temperature of the medium at the outlet end of the spiral heat exchange tube (701); A water pressure sensor 1, arranged at the inlet end of the spiral heat exchange tube (701), and used to detect the pressure at the inlet end of the spiral heat exchange tube (701); A second water pressure sensor is arranged at the outlet end of the spiral heat exchange tube (701) and is used to detect the pressure at the outlet end of the spiral heat exchange tube (701); The controller, the alarm, the controller is electrically connected with the mass flow sensor, the temperature sensor 1, the temperature sensor 2, the water pressure sensor 1, the water pressure sensor 2 and the alarm. The controller controls the alarm to sound based on the mass flow sensor, the temperature sensor 1, the temperature sensor 2, the water pressure sensor 1 and the water pressure sensor 2, including the following steps: Based on the mass flow sensor, temperature sensor 1, temperature sensor 2, water pressure sensor 1 and water pressure sensor 2, the actual failure coefficient of the heat exchange box (7) is calculated: ;in, is the actual failure coefficient of the heat exchanger (7) in the i-th detection cycle, is the weight value of heat transfer performance, is the reference heat transfer coefficient of the spiral heat exchange tube (701), is the surface area of ​​the spiral heat exchange tube (701), is the preset reference temperature of the medium in the spiral heat exchange tube (701) after the temperature is reduced. is the logarithm to base e, is the detection value of the mass flow sensor in the i-th detection cycle, is the specific heat capacity of the medium in the spiral heat exchange tube (701), is the detection value of temperature sensor 1 in the i-th detection cycle, is the detection value of the temperature sensor 2 in the i-th detection cycle, lg is the logarithm with base 10, is the detection value of water pressure sensor 1 in the i-th detection cycle, is the detection value of water pressure sensor 2 in the i-th detection cycle, is the reference pressure difference at both ends of the spiral heat exchange tube (701), is the weight value for selecting the permeable membrane performance, is the total usage time of the hydrophilic selective permeable membrane (704) up to the i-th detection cycle, is the benchmark usage time of the hydrophilic selective permeable membrane (704), is the total usage time of the hydrophobic selective permeable membrane (706) up to the i-th detection cycle, is a baseline usage time of the hydrophobic selective permeable membrane (706); The controller compares the actual fault coefficient of the heat exchange box (7) in the i-th detection cycle, and when the actual fault coefficient of the heat exchange box (7) in the i-th detection cycle is greater than a preset fault coefficient, the controller controls the alarm to issue an alarm prompt.

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