A simulated heat source device for testing

Abstract

This invention discloses a simulated heat source device for testing, relating to the field of solar heating system testing technology. It includes a variable-volume water tank, a water supply pipe, a first bypass pipe, and a second bypass pipe. The first bypass pipe is connected to one end of the water supply pipe, and the second bypass pipe is connected to the other end of the water supply pipe. The variable-volume water tank is connected between the first and second bypass pipes. It also includes a heating device, a control unit, and an adjusting mechanism. The water supply pipe includes an inlet section, an outlet section, and a heating section. The two ends of the first bypass pipe are connected to the outlet section and the variable-volume water tank, respectively. The two ends of the second bypass pipe are connected to the inlet section and the variable-volume water tank, respectively. The heating section is connected between the inlet section and the outlet section. The heating device is wound around the outer surface of the heating section. The control unit is electrically connected to the heating device and is used to control the heating temperature of the heating device. The adjusting mechanism is connected to the variable-volume water tank. This invention has the advantage of improving testing accuracy.

Description

Technical Field

[0001] This invention relates to the field of solar heating system testing technology, specifically to a simulated heat source device for testing. Background Technology

[0002] With the rapid development of the clean heating application market and the advancement of solar thermal conversion technology, solar water heating systems have begun to enter the commercial production and application stage in the past year. Due to their high heat conversion efficiency, green and low carbon emissions, strong ability to assist other energy sources in heating, and low investment, they have high technical and economic value.

[0003] To improve the heating reliability of solar heating systems, current systems utilize auxiliary energy sources such as air-source heat pumps, straw stoves, gas heating, and electric auxiliary heating. These systems rely on intelligent control systems to allocate solar and auxiliary energy supplies, achieving uninterrupted heating and reducing operating costs. However, current performance testing of solar heating systems only focuses on the solar heating components. The test results only reflect the photothermal conversion of solar components under specific operating conditions, without considering the impact of auxiliary energy on the heating results. This fails to reflect the actual performance of the heating system under intelligent control, making the test results difficult to use in the design process. Summary of the Invention

[0004] This invention aims to address, to a certain extent, one of the technical problems in related technologies. To this end, this invention provides a simulated heat source device for testing, which has the advantage of improving testing accuracy.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A simulated heat source device for testing includes a variable-volume water tank, a water supply pipe, a first bypass pipe, and a second bypass pipe. The first bypass pipe is connected to one end of the water supply pipe, and the second bypass pipe is connected to the other end of the water supply pipe. The variable-volume water tank is connected between the first bypass pipe and the second bypass pipe. The simulated heat source device further includes a heating device, a control unit, and an adjusting mechanism. The water supply pipe includes an inlet section, an outlet section, and a heating section. The two ends of the first bypass pipe are connected to the outlet section and the variable-volume water tank, respectively. The two ends of the second bypass pipe are connected to the inlet section and the variable-volume water tank, respectively. The heating section is connected between the inlet section and the outlet section. The heating device is wound around the outer surface of the heating section. The control unit is electrically connected to the heating device and is used to control the heating temperature of the heating device. The adjusting mechanism is connected to the variable-volume water tank and is used to adjust the volume of the variable-volume water tank.

[0007] The first and second bypass pipes connect to the outlet, inlet, and variable-volume water tank, respectively, forming a circulating bypass loop. The water flow in the circulating bypass loop mixes with the water flow heated by the heating device in the delivery pipe. Flexible temperature control is achieved by controlling the ratio of the bypass pipe flow rate to the delivery pipe flow rate. In traditional electric heating or coil cooling methods, power adjustment requires waiting for changes in the system's heat capacity to take effect, resulting in a response delay. By adding a circulating bypass loop and mixing the medium in the delivery pipe for temperature regulation, the temperature response is faster, avoiding temperature fluctuations caused by power adjustment lag in traditional electric heating or coil cooling methods, and improving the uniformity of heat exchange. Furthermore, by adjusting the size of the variable-volume water tank to change the water volume in the system, the heat capacity of the simulated heat source is dynamically adjusted, thus simulating the impact of the added heat capacity of the heating source on the system, thereby improving the accuracy of performance test results for solar water heating systems with auxiliary heat sources.

[0008] Optionally, the variable volume water tank includes a water tank body and an air bladder. The water tank body is disposed inside the air bladder. The first bypass pipe passes through one side of the air bladder and communicates with the water tank body. The second bypass pipe passes through the other side of the air bladder and communicates with the water tank body. The water tank body is a corrugated telescopic water tank. The adjusting mechanism is communicated with the air bladder and is used to adjust the air pressure inside the air bladder.

[0009] Optionally, the regulating mechanism includes an air pump and an air generator, the air pump being connected between the control unit and the airbag.

[0010] Optionally, it also includes an electric exhaust valve and a pressure sensor. The airbag has an air outlet, the electric exhaust valve covers the air outlet, and the pressure sensor is disposed inside the airbag. The adjustment mechanism also includes a pressure controller, which is electrically connected to the air pump, the electric exhaust valve, and the pressure controller, respectively.

[0011] The coordinated operation of the electric exhaust valve, pressure sensor, and pressure controller enables automatic pressure regulation. The required capacity of the water tank is determined based on the system's heat capacity, thus determining the corresponding pressure value. The pressure sensor automatically collects pressure data from within the air bladder and transmits it to the pressure controller. The pressure controller, according to a preset program and algorithm, controls the electric exhaust valve and air pump until the pressure sensor reading matches the required pressure value, thereby improving equipment operating efficiency and achieving automated operation.

[0012] Optionally, the control unit includes a power control device and a power output device, wherein the power output device is electrically connected to the power control device and the heating device, respectively.

[0013] Optionally, the power output device is a frequency converter power output power supply.

[0014] Optionally, the heating element is a metal tube.

[0015] Optionally, it also includes an insulation layer that covers the outer layer of the water pipe.

[0016] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of the present invention will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of the present invention. In addition, each of these features, elements and components appearing in the following text and drawings is a plurality of, and different symbols or numbers are used for convenience of representation, but all represent parts with the same or similar construction or function. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention.

[0019] Among them, 10 is a variable volume water tank; 12 is a first bypass pipe; 13 is a second bypass pipe; 14 is a heating device; 16 is an adjusting mechanism; 17 is a water inlet; 18 is a water outlet; 19 is a heating unit; 20 is a water tank body; 21 is an air bladder; 22 is a power control device; 23 is a power output device; 26 is an electric exhaust valve; 27 is a pressure sensor; 31 is a water pump; 32 is an electromagnetic coil; 33 is an insulating tube; and 34 is an electromagnetic shielding cover. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain the present invention and should not be construed as limiting the invention.

[0021] The terms "an embodiment," "example," or "example" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this application. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0022] This embodiment provides a simulated heat source device for testing, such as... Figure 1As shown, the system includes a variable-volume water tank 10, a water supply pipe, a first bypass pipe 12, and a second bypass pipe 13. The first bypass pipe 12 is connected to one end of the water supply pipe, and the second bypass pipe 13 is connected to the other end of the water supply pipe. The variable-volume water tank 10 is connected between the first bypass pipe 12 and the second bypass pipe 13. The simulated heat source equipment for testing also includes a heating device 14, a control unit, and an adjustment mechanism 16. The water supply pipe includes an inlet section 17, an outlet section 18, and a heating section 19. The two ends of the first bypass pipe 12 are respectively... The water inlet 17 is connected to the water outlet 18 and the variable volume water tank 10. The two ends of the second bypass pipe 13 are connected to the water inlet 17 and the variable volume water tank 10, respectively. The heating unit 19 is connected between the water inlet 17 and the water outlet 18. The heating device 14 is wound around the outer surface of the heating unit 19. The control unit is electrically connected to the heating device 14 and is used to control the heating temperature of the heating device 14. The adjusting mechanism 16 is connected to the variable volume water tank 10 and is used to adjust the volume of the variable volume water tank 10. It should be noted that the water inlet 17 is equipped with a water pump 31 to allow water to flow in the water supply pipe.

[0023] The simulated heat source device provided in this application is used to replace the location of the auxiliary heat source in the solar water heating system under test, thereby testing the actual heating performance of the solar water heating system under the action of multi-energy complementarity. It is understood that the connection positions of the water inlet 17 and water outlet 18 of the simulated heat source device provided in this application in the solar water heating system under test are the same as the connection positions of the water inlet and water outlet of the original auxiliary heat source in the solar water heating system under test.

[0024] The first bypass pipe 12 and the second bypass pipe 13 are respectively connected to the water outlet 18, the water inlet 17, and the variable volume water tank 10, forming a circulating bypass loop. The water flow in the circulating bypass loop mixes with the water flow in the water supply pipe heated by the heating device 14. By controlling the ratio of the bypass pipe flow rate to the water supply pipe flow rate, flexible temperature control is achieved. In traditional electric heating or coil cooling methods, power adjustment requires waiting for changes in the system's heat capacity to take effect, resulting in a response delay. By adding a temperature adjustment method that mixes the medium in the circulating bypass loop and the water supply pipe, the temperature response is faster, avoiding temperature fluctuations caused by power adjustment lag in traditional electric heating or coil cooling methods, and improving the uniformity of heat exchange.

[0025] In addition, the test simulation heat source device provided in this embodiment adopts a variable volume water tank 10. By adjusting the size of the variable volume water tank 10, the water volume in the system is changed, thereby dynamically adjusting the heat capacity of the simulation heat source. This simulates the impact of the heat capacity of the heat source added to the system on the system, thereby improving the accuracy of the performance test results of the solar water heating system with auxiliary heat source.

[0026] Optionally, the variable volume water tank 10 includes a water tank body 20 and an air bladder 21. The water tank body 20 is disposed inside the air bladder 21. A first bypass pipe 12 passes through one side of the air bladder 21 and is connected to the water tank body 20. A second bypass pipe 13 passes through the other side of the air bladder 21 and is connected to the water tank body 20. The water tank body 20 is a corrugated telescopic water tank. An adjustment mechanism 16 is connected to the air bladder 21 and is used to adjust the air pressure inside the air bladder 21.

[0027] Through the cooperation of the water tank body 20, the air bladder 21, and the adjusting mechanism 16, when it is necessary to increase the total heat capacity of the system, the adjusting mechanism 16 controls the air bladder 21 to release air, reducing the air pressure inside the air bladder 21, allowing the water tank body 20 to hold more water. Conversely, when it is necessary to reduce the total heat capacity of the system, the adjusting mechanism 16 increases the air pressure inside the air bladder 21, compressing the water tank body 20 and reducing the amount of water that can be stored in the tank. Preferably, the water tank body 20 is a corrugated telescopic water tank, which allows for changes in internal volume due to its telescopic nature. The separate design of the air bladder 21 and the water tank body 20 facilitates maintenance or cleaning of the water tank without the need for complex disassembly of the entire tank, reducing maintenance costs and time.

[0028] In one specific embodiment, the regulating mechanism 16 includes an air pump and an air generator, with the air pump connected between the control unit and the airbag 21. With the cooperation of the water tank body 20, the airbag 21, the air pump, and the air generator, the air pressure inside the airbag 21 is increased or decreased by adjusting the amount of gas inside the airbag 21, thereby further controlling the capacity of the water tank body 20.

[0029] Optionally, it also includes an electric exhaust valve 26 and a pressure sensor 27. An air outlet is provided on the airbag 21, the electric exhaust valve 26 covers the air outlet, and the pressure sensor 27 is disposed inside the airbag 21. The adjustment mechanism 16 also includes a pressure controller, which is electrically connected to the air pump, the electric exhaust valve 26, and the pressure controller respectively.

[0030] The coordinated operation of the electric exhaust valve 26, the pressure sensor 27, and the pressure controller enables automatic pressure regulation. The required capacity of the water tank 20 is determined based on the system's heat capacity, thus determining the corresponding pressure value. The pressure sensor 27 automatically collects the pressure data within the air bladder 21 and transmits it to the pressure controller. The pressure controller, according to a preset program and algorithm, controls the electric exhaust valve 26 and the air pump until the pressure sensor reading matches the required pressure value, thereby improving equipment operating efficiency and achieving automated operation.

[0031] In one alternative embodiment, the control unit includes a power control device 22 and a power output device 23, the power output device 23 being electrically connected to the power control device 22 and the heating device 14, respectively.

[0032] By setting up the power control device 22, the operating status of the equipment can be monitored in real time, including parameters such as water temperature, water volume, and pressure, and the power output can be dynamically adjusted according to these parameters. For example, when the system needs to provide a large amount of hot water quickly, the power control device 22 will rapidly increase the power supplied to the heating device 14, so that the heating device 14 can speed up the heating process; when the water temperature reaches the set value, it can reduce the power output in time to avoid overheating.

[0033] The heating device 14 includes an electromagnetic coil 32, an insulating tube 33, and an electromagnetic shield 34. The insulating tube 33 is sleeved on the heating part 19, the electromagnetic coil 32 is wound around the outer wall of the insulating tube 33, and the electromagnetic shield 34 is sleeved on the insulating tube 33.

[0034] Optionally, the power output device 23 is a variable frequency power output power supply. By cooperating with the variable frequency power output power supply and the power control device 22, different heating curves can be simulated to simulate the heating characteristics of the auxiliary heat source of the solar water heater, thereby improving the accuracy of the test results.

[0035] In one alternative embodiment, the heating element 19 is a metal tube. It is understood that the metal tube is made of a metal material with high thermal conductivity, thereby improving the heating effect on the medium in the heating element 19.

[0036] In one alternative embodiment, an insulation layer is also included, which covers the outer layer of the water pipe. By providing an insulation layer, heat loss of the heated medium during flow is reduced.

[0037] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A simulated heat source device for testing, characterized by, The test simulation heat source device comprises a variable volume water tank, a water delivery pipe, a first bypass pipe and a second bypass pipe, the first bypass pipe is communicated with one end of the water delivery pipe, the second bypass pipe is communicated with the other end of the water delivery pipe, the variable volume water tank is communicated between the first bypass pipe and the second bypass pipe; the test simulation heat source device further comprises a heating device, a control unit and an adjusting mechanism, the water delivery pipe comprises a water inlet part, a water outlet part and a heating part, two ends of the first bypass pipe are respectively communicated with the water outlet part and the variable volume water tank, two ends of the second bypass pipe are respectively communicated with the water inlet part and the variable volume water tank, the heating part is communicated between the water inlet part and the water outlet part; the heating device is wound on the outer surface of the heating part; the control unit is electrically connected with the heating device, and the control unit is used for controlling the heating temperature of the heating device; the adjusting mechanism is connected with the variable volume water tank, and the adjusting mechanism is used for adjusting the volume of the variable volume water tank.

2. The simulated heat source device for testing according to claim 1, wherein The variable volume water tank comprises a water tank body and an air bag, the water tank body is arranged in the air bag, the first bypass pipe passes through one side of the air bag and is communicated with the water tank body, the second bypass pipe passes through the other side of the air bag and is communicated with the water tank body, and the water tank body is a corrugated telescopic water tank; the adjusting mechanism is communicated with the air bag, and the adjusting mechanism is used for adjusting the air pressure in the air bag.

3. The simulated heat source device for testing according to claim 2, wherein The adjusting mechanism comprises an air pump and an air generating device, and the air pump is connected between the control unit and the air bag.

4. The simulated heat source device for testing according to claim 3, wherein Further comprising an electric exhaust valve and an air pressure sensor, an air outlet is arranged on the air bag, the electric exhaust valve covers the air outlet, and the air pressure sensor is arranged in the air bag; the adjusting mechanism further comprises an air pressure controller, and the air pressure controller is electrically connected with the air pump, the electric exhaust valve and the air pressure sensor.

5. The simulated heat source device for testing according to claim 2, wherein, The control unit comprises a power control device and a power output device, and the power output device is electrically connected with the power control device and the heating device.

6. The simulated heat source device for testing according to claim 5, wherein The power output device is a variable frequency power output power source.

7. The simulated heat source device for testing according to any one of claims 1 to 6, characterized in that, The heating part is a metal pipe.

8. The simulated heat source device for testing according to any one of claims 1 to 6, characterized in that, Further comprising a heat preservation layer, and the heat preservation layer is wrapped on the outer layer of the water delivery pipe. Further comprising a heat preservation layer, and the heat preservation layer is wrapped on the outer layer of the water delivery pipe.

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