Multi-module buried pipe heat exchange parameter tester

Abstract

The utility model relates to the field of ground source heat pump testing devices, in particular to a multi-module buried pipe heat exchange parameter tester which comprises a pipeline system, a hydraulic module, an air-cooled heat pump module and a mode switching module. The pipeline system comprises a water inlet pipeline, a heating pipeline, a water outlet pipeline and a connecting pipeline; the water inlet pipeline, the connecting pipeline and the water outlet pipeline are sequentially connected; two ends of the heating pipeline are respectively connected with the water inlet pipeline and the water outlet pipeline so as to be connected in parallel with the connecting pipeline; the hydraulic module comprises a circulating water pump and a heater, the heater is arranged in the heating pipeline, and the circulating water pump is arranged on the water inlet pipeline or the water outlet pipeline; the air-cooled heat pump module is arranged on the connecting pipeline; the mode switching module is used for controlling connection and disconnection of the heating pipeline and the connecting pipeline. The tester not only can perform initial ground temperature test and thermal response test, but also can simulate heating or refrigeration working condition test, and has the advantages of compact structure, comprehensive functions, convenience in operation and the like.

Description

Technical Field

[0001] The present application relates to the field of ground source heat pump testing devices, and in particular to a multi-module buried pipe heat exchange parameter tester. Background Art

[0002] A ground-source heat pump is an energy supply system that uses shallow geothermal resources as a source of heat and cold, and provides cooling and heating for buildings through heat pump technology. Compared with traditional air-source heat pump systems, ground-source heat pump systems have the advantages of being low-carbon, energy-saving, and highly efficient.

[0003] After the construction of the ground source heat pump buried pipe is completed, it is necessary to conduct a heat exchange performance test and a constant heat flow thermal response test. The heat exchange performance detectors currently used for the ground source heat pump buried pipe are generally vehicle-mounted testers or single-unit testers.

[0004] Vehicle-mounted testers offer a wide range of functions, but their bulk makes them inconvenient to transport across provinces and cities for testing. Generally, these testers are concentrated in a single area. While compact, stand-alone testers, due to their internal electric heating, can only simulate summer operating conditions for buried pipes and lack winter testing capabilities. Utility Model Content

[0005] The present application provides a multi-module buried pipe heat exchange parameter tester, which can not only perform initial ground temperature testing and thermal response testing, but also simulate heating or cooling operating condition testing. It has the advantages of compact structure, comprehensive functions, and easy operation.

[0006] The multi-module buried pipe heat exchange parameter tester provided in this application adopts the following technical solutions:

[0007] A multi-module underground pipe heat exchange parameter tester, comprising a piping system, a hydraulic module, an air-cooled heat pump module, and a mode switching module;

[0008] The pipeline system includes a water inlet pipe, a heating pipe, a water outlet pipe and a connecting pipe; the water inlet pipe, the connecting pipe and the water outlet pipe are connected in sequence; the two ends of the heating pipe are respectively connected to the water inlet pipe and the water outlet pipe, thereby being connected in parallel with the connecting pipe; the water inlet pipe is connected to the water outlet of the buried pipe, and the water outlet pipe is connected to the water inlet of the buried pipe;

[0009] The hydraulic module includes a circulating water pump and a heater. The heater is arranged in the heating pipe, and the circulating water pump is arranged on the water inlet pipe or the water outlet pipe; the air-cooled heat pump module is arranged on the connecting pipe;

[0010] The mode switching module is used to control the on and off of the heating pipe and the connecting pipe.

[0011] By adopting the above technical solution, different test functions can be achieved by controlling the on / off state of the heating and connecting pipes, and by controlling the operation of the heater and air-cooling control modules. Specifically, when only the circulating water pump is turned on, the initial ground temperature test can be performed; when the heater is turned on, the constant heat flow thermal response test can be performed; and when the air-cooling heat pump module is activated, a simulated heating or cooling condition test can be performed.

[0012] Preferably, the hydraulic module further includes an expansion water tank, which is connected to the pipeline system.

[0013] By adopting the above technical solution, the exhaust inside the pipeline system can be achieved through the expansion tank, so as to ensure the accuracy of the test.

[0014] Preferably, the mode switching module includes a first valve provided on the heating pipe and a second valve provided on the connecting pipe.

[0015] By adopting the above technical solution, through the coordinated use of the first valve and the second valve, the switching of the heating pipe and the connecting pipe can be achieved to ensure that the heater and the air-cooled heat pump module can work stably, thereby achieving the switching of the test mode.

[0016] Preferably, a third valve is further provided on the connecting pipe, and the second valve and the third valve are respectively located at the water inlet and the water outlet of the air-cooled heat pump module.

[0017] By adopting the above technical solution, the second valve and the third valve can effectively ensure the independence of the connecting pipe and the heating pipe, and avoid mutual interference between the heater and the air-cooled heat pump module.

[0018] Preferably, the circulating water pump is also provided with a flow regulating valve.

[0019] By adopting the above technical solution, the flow rate inside the pipeline system is adjusted through the flow regulating valve to change the test environment or ensure the stability of the test environment.

[0020] Preferably, a fourth valve is further provided at the connection between the water inlet pipe and the buried pipe; and a fifth valve is further provided at the connection between the water outlet pipe and the buried pipe.

[0021] By adopting the above technical solution, the fourth valve and the fifth valve can realize the connection and disconnection between the buried pipe and the pipeline system, and can ensure the sealing of the pipeline system during transportation.

[0022] Preferably, the air-cooled heat pump module is detachably connected to the connecting pipe.

[0023] By adopting the above technical solution, the hydraulic module and the air-cooled heat pump module can be transported separately, and the hydraulic module can be used alone and can be disassembled during transportation; the tester can be reassembled according to the test requirements after arriving at the destination, which is convenient for long-distance transportation.

[0024] Preferably, it further includes an intelligent control module, which includes a PLC controller, a silicon carbide power controller, a water pump inverter, a signal line quick-connect module, and a 5G signal transmitter and receiver; the hydraulic module also includes a temperature sensor and an electromagnetic flowmeter, which are arranged on the pipeline system;

[0025] The temperature sensor, electromagnetic flowmeter, silicon carbide power controller, and water pump frequency converter are all electrically connected to the PLC controller. The silicon carbide power controller is electrically connected to the heater via a signal line quick-connect module. The water pump frequency converter is connected to the circulating water pump via a signal line quick-connect module.

[0026] The PLC controller is also connected to a 5G signal transmitter and receiver for receiving and transmitting signals and realizing remote control.

[0027] By adopting this technical solution, the intelligent control module effectively improves the tester's automation and test accuracy. By collecting data from the electromagnetic flowmeter and temperature sensor, it simultaneously controls the silicon carbide power controller and the water pump inverter. The silicon carbide power controller regulates the heater to control the water temperature, while the water pump inverter regulates the water pump to control the flow rate, ensuring stable test conditions. Furthermore, through 5G signal transmission and reception, control signals are received and transmitted, enabling remote control from a mobile phone.

[0028] Preferably, the air-cooled heat pump module includes an air-cooled heat pump unit, a temperature controller, a flow controller, and a cold and heat amount controller; the air-cooled heat pump unit is electrically connected to the cold and heat amount controller; the cold and heat amount controller is electrically connected to the temperature controller and the flow controller respectively; the temperature controller and the flow controller are then electrically connected to the air-cooled heat pump unit.

[0029] By adopting the above technical solution, the heat and cold quantity controller is used to make the flow rate and temperature difference of the air-cooled heat pump unit constant; the temperature controller can control the inlet and outlet water temperature of the air-cooled heat pump unit, and the flow controller can control the inlet and outlet water flow of the air-cooled heat pump to ensure the smooth progress of the test work.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. Due to the multi-module design adopted in this application, including the piping system, hydraulic module, air-cooled heat pump module, and mode switching module, the tester can not only perform initial ground temperature testing and thermal response testing, but also simulate heating or cooling conditions. The comprehensive functions effectively improve the efficiency and accuracy of buried pipe heat exchange performance testing;

[0032] 2. The hydraulic module can be used alone or in combination with the air-cooled heat pump module. In addition, the various parts of the tester can be disassembled for transportation and reassembled according to test requirements upon arrival at the destination, making it easier to transport over long distances.

[0033] 3. The intelligent control module can collect data from flow meters and temperature sensors, and control the operation of heaters or air-cooled heat pump modules to ensure the stability of test conditions and improve test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a structural diagram of a multi-module buried pipe heat exchange parameter tester according to an embodiment of the present application;

[0035] Markings in the accompanying drawings: 1. Piping system; 11. Water inlet pipe; 12. Heating pipe; 13. Water outlet pipe; 14. Connecting pipe; 2. Hydraulic module; 21. Circulating water pump; 22. Expansion tank; 23. Heater; 24. Electromagnetic flowmeter; 25. Temperature sensor; 26. Flow regulating valve; 27. Fourth valve; 28. Fifth valve; 3. Air-cooled heat pump module; 4. Mode switching module; 41. First valve; 42. Second valve; 43. Third valve. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1 This application is described in further detail.

[0037] A multi-module buried pipe heat exchange parameter tester comprises a pipeline system 1, a hydraulic module 2, an air-cooled heat pump module 3, a mode switching module 4 and an intelligent control module.

[0038] Specifically, the pipeline system 1 includes an inlet pipe 11, a heating pipe 12, an outlet pipe 13 and a connecting pipe 14; the inlet pipe 11, the connecting pipe 14 and the outlet pipe 13 are connected in sequence; the two ends of the heating pipe 12 are respectively connected to the inlet pipe 11 and the outlet pipe 13 and thus connected in parallel with the connecting pipe 14; the inlet pipe 11 is connected to the water outlet of the buried pipe, and the outlet pipe 13 is connected to the water inlet of the buried pipe; a fourth valve 27 is also provided at the connection between the inlet pipe 11 and the buried pipe, and a fifth valve 28 is also provided at the connection between the outlet pipe and the buried pipe. The fourth valve 27 and the fifth valve 28 can control the connection between the pipeline system 1 and the buried pipe.

[0039] The hydraulic module 2 consists of a circulating water pump 21, an expansion tank 22, a heater 23, an electromagnetic flowmeter 24, and a temperature sensor 25. The circulating water pump 21 is installed on the inlet pipe 11 or the outlet pipe 13. The electromagnetic flowmeter 24 and temperature sensor 25 are also installed on the piping system 1 to detect flow and temperature, respectively. The expansion tank 22 is connected to the piping system 1.

[0040] The air-cooled heat pump module 3 is arranged on the connecting pipe 14, which specifically includes an air-cooled heat pump unit, a temperature controller, a flow controller, and a cold and heat controller; the water inlet and outlet of the air-cooled heat pump unit are connected to the connecting pipe 14, and the air-cooled heat pump unit is electrically connected to the cold and heat controller; the cold and heat controller is electrically connected to the temperature controller and the flow controller respectively; the temperature controller and the flow controller are then electrically connected to the air-cooled heat pump unit.

[0041] A heat and cooling controller is used to maintain a constant flow rate and temperature difference in an air-cooled heat pump unit. The temperature controller controls the inlet and outlet water temperatures, while the flow controller controls the inlet and outlet water flow rates.

[0042] The mode switching module 4 is used to control the opening and closing of the heating pipe 12 and the connecting pipe 14. Specifically, the mode switching module 4 includes a first valve 41 provided on the heating pipe 12 and a second valve 42 provided on the connecting pipe 14. The first valve 41 and the second valve 42 respectively control the opening and closing of the heating pipe 12 and the connecting pipe 14. A third valve 43 is also provided at the connection between the outlet pipe 13 and the water outlet of the air-cooling heat pump module 3. The second and third valves 42 and 43 are used to control the connection and disconnection of the water inlet pipe 11 and the water outlet pipe 13 with the air-cooling heat pump module 3, and cooperate with the first valve 41 to achieve the switching between heating and cooling.

[0043] The circulating water pump 21 is also provided with a flow regulating valve 26 .

[0044] Hydraulic module 2 can independently and accurately control and measure the circulating water flow rate and the heating amount of the supply and return water thermometers, and can perform initial ground temperature testing, thermal response testing, and temperature field recovery testing.

[0045] The specific process is as follows: open the fourth valve 27, the fifth valve 28, and the first valve 41, close the second valve 42 and the third valve 43, slowly add water from the expansion water tank 22, turn on the power and turn on the circulating water pump 21, adjust the flow regulating valve 26 to the test flow, and exhaust and add water at the same time. After the air is exhausted, the initial ground temperature test can be carried out.

[0046] After the initial ground temperature test is completed, the heater 23 can be turned on, adjusted to the set power, and the flow control valve 26 can be fine-tuned to the test flow to perform the constant heat flow thermal response test.

[0047] The air-cooled heat pump module 3 can be combined with the hydraulic module 2 and the intelligent control module to simulate heating or cooling conditions. The specific operation is to close the first valve 41, open the second valve 42 and the third valve 43, start the air-cooled heat pump module 3, and set the outlet water temperature of the air-cooled heat pump. Specifically, the air-cooled heat pump module 3 can be a fully variable frequency air-cooled heat pump unit.

[0048] The hydraulic module 2 and the air-cooled heat pump module 3 can be separated and used separately, or used in combination.

[0049] The intelligent control module includes a PLC controller, a silicon carbide power controller, a water pump inverter, a signal line quick-connect module, and a 5G signal transmitter and receiver. The temperature sensor 25, electromagnetic flowmeter 24, silicon carbide power controller, and water pump inverter are all electrically connected to the PLC controller. The silicon carbide power controller is electrically connected to the heater 23 via the signal line quick-connect module, and the water pump inverter is connected to the circulating water pump 21 via the signal line quick-connect module.

[0050] The intelligent control module collects data from the electromagnetic flowmeter 24 and the temperature sensor 25, and controls the silicon carbide power controller and the water pump inverter at the same time. The silicon carbide power controller controls the heater to control the water temperature, and the water pump inverter controls the flow by adjusting the circulating water pump 21 to ensure the stability of the test conditions.

[0051] The PLC controller is also connected to a 5G signal transmitter and receiver for receiving and transmitting signals and realizing remote control.

[0052] In summary, the tester can use the hydraulic module alone to perform initial ground temperature testing, thermal response testing, and ground temperature field recovery testing (test methods specified in the "Technical Specifications for Ground Source Heat Pumps" GB50036-2005 (2009 Edition)), and can also combine modules according to needs. For example, by connecting the intelligent control module, in addition to remote control and viewing, it can also perform simulation tests of summer cooling conditions. By connecting the air-cooled heat pump module (3), it can perform winter heating conditions simulation tests and cooling response tests. The device has the advantages of compact structure, comprehensive functions, stable measurement, and easy operation.

[0053] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A multi-module buried pipe heat exchange parameter tester, characterized by: It includes a piping system (1), a hydraulic module (2), an air-cooled heat pump module (3) and a mode switching module (4); The pipeline system (1) comprises a water inlet pipeline (11), a heating pipeline (12), a water outlet pipeline (13) and a connecting pipeline (14); the water inlet pipeline (11), the connecting pipeline (14) and the water outlet pipeline (13) are connected in sequence; both ends of the heating pipeline (12) are respectively connected to the water inlet pipeline (11) and the water outlet pipeline (13) so as to be connected in parallel with the connecting pipeline (14); the water inlet pipeline (11) is connected to the water outlet of the buried pipe, and the water outlet pipeline (13) is connected to the water inlet of the buried pipe; The hydraulic module (2) comprises a circulating water pump (21) and a heater (23); the heater (23) is arranged in the heating pipe (12); the circulating water pump (21) is arranged on the water inlet pipe (11) or the water outlet pipe (13); the air-cooled heat pump module (3) is arranged on the connecting pipe (14); The mode switching module (4) is used to control the on / off of the heating pipe (12) and the connecting pipe (14).

2. The multi-module buried pipe heat exchange parameter tester according to claim 1, characterized in that: The hydraulic module (2) further comprises an expansion water tank (22), and the expansion water tank (22) is in communication with the pipeline system (1).

3. The multi-module buried pipe heat exchange parameter tester according to claim 1, characterized in that: The mode switching module (4) comprises a first valve (41) provided on the heating pipe (12) and a second valve (42) provided on the connecting pipe (14).

4. The multi-module buried pipe heat exchange parameter tester according to claim 3, characterized in that: A third valve (43) is also provided on the connecting pipe (14), and the second valve (42) and the third valve (43) are respectively located at the water inlet and the water outlet of the air-cooled heat pump module (3).

5. The multi-module buried pipe heat exchange parameter tester according to claim 1, characterized in that: The circulating water pump (21) is also provided with a flow regulating valve (26).

6. The multi-module buried pipe heat exchange parameter tester according to claim 1, characterized in that: A fourth valve (27) is also provided at the connection between the water inlet pipe (11) and the buried pipe; a fifth valve (28) is also provided at the connection between the water outlet pipe and the buried pipe.

7. The multi-module buried pipe heat exchange parameter tester according to claim 1, characterized in that: The air-cooled heat pump module (3) is detachably connected to the connecting pipe (14).

8. The multi-module buried pipe heat exchange parameter tester according to claim 2, characterized in that: It also includes an intelligent control module, which includes a PLC controller, a silicon carbide power controller, a water pump frequency converter, a signal line quick-connect module, and a 5G signal transmitter and receiver; the hydraulic module (2) also includes a temperature sensor (25) and an electromagnetic flowmeter (24), and the temperature sensor (25) and the electromagnetic flowmeter (24) are arranged on the pipeline system (1); The temperature sensor (25), the electromagnetic flowmeter (24), the silicon carbide power controller, and the water pump frequency converter are all electrically connected to the PLC controller, the silicon carbide power controller is electrically connected to the heater (23) via a signal line quick connection module, and the water pump frequency converter is connected to the circulating water pump (21) via a signal line quick connection module; The PLC controller is also connected to a 5G signal transmitter and receiver for receiving and transmitting signals and realizing remote control.

9. The multi-module buried pipe heat exchange parameter tester according to claim 1, characterized in that: The air-cooled heat pump module (3) comprises an air-cooled heat pump unit, a temperature controller, a flow controller, and a cold and heat quantity controller; the air-cooled heat pump unit is electrically connected to the cold and heat quantity controller; the cold and heat quantity controller is electrically connected to the temperature controller and the flow controller respectively; and the temperature controller and the flow controller are further electrically connected to the air-cooled heat pump unit.

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