Calorimeter durability test device and test method

Abstract

The invention relates to the technical field of heat meter verification, and discloses a heat meter durability test device and method, and the device comprises a water tank unit, a water pump unit, a temperature and pressure detection unit, a meter clamping unit, and a flow adjustment detection unit. The water tank unit, the water pump unit, the temperature and pressure detection unit, the meter clamping unit and the flow adjustment detection unit are sequentially connected through pipelines, and the flow detection unit is connected with the water tank unit. A first reversing valve and a water inlet valve are further arranged between the water pump unit and the temperature and pressure detection unit, and a drainage valve is arranged between the meter clamping unit and the water tank unit. According to the invention, the working environment of the calorimeter in actual use can be effectively simulated, and the durability of the calorimeter can be tested for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of heat meter calibration, in particular to a heat meter durability test device and test method. Background Art

[0002] At present, the durability of heat meters, as the core equipment for building heat metering, directly affects the stability and measurement accuracy of long-term use. Traditional durability test devices have the following shortcomings: Single working condition simulation: Existing devices mostly use a test mode with a fixed flow rate and a constant temperature difference, which cannot effectively simulate complex working conditions such as pressure fluctuations, flow changes, and hot and cold shocks in actual heating systems, resulting in deviations between test results and actual applications. Low degree of automation: Relying on manual adjustment of valves and parameters, the operation is cumbersome and the accuracy is insufficient, making it difficult to achieve stable control for long-term continuous testing. Therefore, there is an urgent need for a heat meter durability test device and test method to realize automatic detection of heat meter durability. Summary of the Invention

[0003] The purpose of the present invention is to provide a heat meter durability test device and test method, aiming to solve the above problems.

[0004] The present invention provides a heat meter durability test device, comprising:

[0005] A water tank unit, a water pump unit, a temperature and pressure detection unit, a meter clamping unit, and a flow regulation detection unit, wherein the water tank unit, the water pump unit, the temperature and pressure detection unit, the meter clamping unit, and the flow regulation detection unit are sequentially connected through pipelines, and the flow detection unit is connected to the water tank unit;

[0006] A first reversing valve and a water inlet valve are further provided between the water pump unit and the temperature and pressure detection unit, and a drain valve is provided between the meter clamping unit and the water tank unit.

[0007] Preferably, the water tank unit includes a cold water tank and a hot water tank, a second reversing valve is provided between the cold water tank and the hot water tank, one port of the second reversing valve is connected to the hot water tank, and the second port of the second reversing valve is connected to the cold water tank;

[0008] The cold water tank is connected to the drain valve, and a cold water temperature sensor is provided in the cold water tank for detecting the temperature of the cold water tank;

[0009] A hot water temperature sensor is provided in the hot water tank for detecting the temperature of the hot water tank.

[0010] Preferably, the water pump unit includes a cold water pump, a hot water pump, a cold water pneumatic valve and a hot water pneumatic valve; the cold water pump is connected to the cold water tank, and the cold water pneumatic valve is connected to the cold water pump; the hot water pump is connected to the hot water tank, and the hot water pneumatic valve is connected to the hot water pump;

[0011] One port of the first reversing valve is connected to the hot water pneumatic valve, the second port of the first reversing valve is connected to the cold water pneumatic valve, and the third port of the first reversing valve is connected to the water inlet valve.

[0012] Preferably, the temperature and pressure detection unit includes a first temperature sensor, a second temperature sensor, a first pressure sensor and a second pressure sensor;

[0013] The first temperature sensor and the first pressure sensor are arranged on the water inlet pipe of the clamping unit, the first temperature sensor is used to detect the inlet water temperature of the heat meter to be tested, and the first pressure sensor is used to detect the inlet water pressure of the heat meter to be tested;

[0014] The second temperature sensor and the second pressure sensor are arranged on the water outlet pipe of the meter clamping unit. The second temperature sensor is used to detect the outlet water temperature of the heat meter to be tested, and the second pressure sensor is used to detect the outlet water pressure of the heat meter to be tested.

[0015] Preferably, the meter clamping unit includes a meter clamp and a protective device, the meter clamp is used to clamp the heat meter, and the protective device is used to protect the heat meter.

[0016] Preferably, the flow regulating and detecting unit comprises six flow regulating valves and four flow meters, and the inlet of the flow regulating valve is connected to the meter clamping unit;

[0017] The first flow regulating valve and the second flow regulating valve are connected in parallel, and the outlets of the first flow regulating valve and the second flow regulating valve are both connected to the first flow meter;

[0018] The third flow regulating valve and the fourth flow regulating valve are connected in parallel, and the outlets of the third flow regulating valve and the fourth flow regulating valve are both connected to the second flow meter;

[0019] The outlet of the fifth flow regulating valve is connected to the third flow meter;

[0020] The outlet of the sixth flow regulating valve is connected to the fourth flow meter;

[0021] The first flow meter, the second flow meter, the third flow meter and the fourth flow meter are connected in parallel.

[0022] Preferably, the outlets of the first flow meter, the second flow meter, the third flow meter and the fourth flow meter are all connected to the three ports of the second reversing valve.

[0023] The present invention also discloses a heat meter durability test method, which is applied to the above-mentioned heat meter durability test device, comprising:

[0024] Install the heat meter to be tested on the clamping unit;

[0025] Determine the durability test type and select the water pump type and flow control valve according to the durability test type;

[0026] Start the selected water pump and flow regulating valve, and conduct a durability test on the heat meter to be tested.

[0027] Preferably, the durability test types include basic durability test, accelerated durability test-without movable mechanical parts, additional durability test and accelerated durability test-with movable mechanical parts.

[0028] Preferably, when performing a durability test on the heat meter to be tested, the test cycle or test duration is determined according to the durability test type.

[0029] The present invention can perform the most comprehensive test on the heat meter, and not only has high test accuracy, but also the entire test system is safe, widely applicable, and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0031] Figure 1 It is a structural schematic diagram of a heat meter durability test device of the present invention;

[0032] Figure 2 The present invention is a flow chart of a heat meter durability test method.

[0033] In the figure, 11, cold water tank; 12, hot water tank; 21, cold water pump; 22, hot water pump; 23, cold water pneumatic valve; 24, hot water pneumatic valve; 31, first temperature sensor; 32, second temperature sensor; 33, first pressure sensor; 34, second pressure sensor; 40, meter clamp; 51, first flow regulating valve; 52, second flow regulating valve; 53, third flow regulating valve; 54, fourth flow regulating valve; 55, fifth flow regulating valve; 56, sixth flow regulating valve; 61, first flow meter; 62, second flow meter; 63, third flow meter; 64, fourth flow meter; 71, first reversing valve; 72, water inlet valve; 73, drain valve; 74, second reversing valve. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0038] like Figure 1 As shown, the present invention provides a heat meter durability test device, comprising:

[0039] The water tank unit, the water pump unit, the temperature and pressure detection unit, the meter clamping unit and the flow regulation detection unit are connected in sequence through pipelines, and the flow detection unit is connected to the water tank unit;

[0040] A first reversing valve 71 and a water inlet valve 72 are further provided between the water pump unit and the temperature and pressure detection unit, and a drain valve 73 is provided between the meter clamping unit and the water tank unit.

[0041] This invention effectively simulates the actual operating environment of a heat meter, allowing for long-term durability testing. The water tank unit provides a stable water flow, the water pump unit provides power, the temperature and pressure detection unit monitors changes in water temperature and pressure, the meter clamping unit secures the heat meter, and the flow control and detection unit regulates and detects water flow. This connection ensures smooth water flow within the device while also facilitating precise control and monitoring of various parameters.

[0042] The first reversing valve 71 and the water inlet valve 72 allow for flexible switching of the hot and cold water flows in the pump unit, enabling durability testing of the heat meter under various conditions. The drain valve 73 facilitates draining the water from the device after the test, facilitating the next test or maintenance.

[0043] In addition, the device has the advantages of easy operation, accurate testing, and good stability. It can greatly improve the efficiency and quality of heat meter durability testing and provide strong technical support for the research and development and production of heat meters.

[0044] In some embodiments of the present application, the water tank unit includes a cold water tank 11 and a hot water tank 12, and a second reversing valve 74 is arranged between the cold water tank 11 and the hot water tank 12, one port of the second reversing valve 74 is connected to the hot water tank 12, and the second port of the second reversing valve 74 is connected to the cold water tank 11; the cold water tank 11 is connected to the drain valve 73, and a cold water temperature sensor is arranged in the cold water tank 11 for detecting the temperature of the cold water tank 11; a hot water temperature sensor is arranged in the hot water tank 12 for detecting the temperature of the hot water tank 12.

[0045] It is understood that by providing the cold water tank 11 and the hot water tank 12, as well as the second reversing valve 74, it is possible to conveniently switch between using cold water or hot water for testing, further improving the flexibility and adaptability of the test. The temperatures of the cold water tank 11 and the hot water tank 12 can be accurately monitored by cold water temperature sensors and hot water temperature sensors, respectively, to ensure that the water temperature conditions during the test meet the preset requirements. The provision of the second reversing valve 74 allows the water flow to be flexibly switched between the cold water tank 11 and the hot water tank 12 to meet the needs of different test conditions.

[0046] In some embodiments of the present application, the water pump unit includes a cold water pump 21, a hot water pump 22, a cold water pneumatic valve 23 and a hot water pneumatic valve 24; the cold water pump 21 is connected to the cold water tank 11, and the cold water pneumatic valve 23 is connected to the cold water pump 21; the hot water pump 22 is connected to the hot water tank 12, and the hot water pneumatic valve 24 is connected to the hot water pump 22; one port of the first reversing valve 71 is connected to the hot water pneumatic valve 24, the second port of the first reversing valve 71 is connected to the cold water pneumatic valve 23, and the third port of the first reversing valve 71 is connected to the water inlet valve 72.

[0047] It is understandable that by setting up a water pump unit, including a cold water pump 21, a hot water pump 22, a cold water pneumatic valve 23 and a hot water pneumatic valve 24, and a first reversing valve 71, precise control of the direction of water flow is achieved. The cold water pump 21 and the hot water pump 22 are responsible for extracting cold water and hot water from the corresponding water tanks, respectively. Through the control of the cold water pneumatic valve 23 and the hot water pneumatic valve 24, it can be ensured that the water flows along the preset path. The setting of the first reversing valve 71 allows the water flow to be flexibly switched between the cold water pump 21 and the hot water pump 22 to meet the needs under different test conditions. This design not only improves the flexibility of the test, but also ensures the stability and controllability of the water flow during the test, further improving the accuracy and reliability of the heat meter durability test.

[0048] In some embodiments of the present application, the temperature and pressure detection unit includes a first temperature sensor 31, a second temperature sensor 32, a first pressure sensor 33 and a second pressure sensor 34; the first temperature sensor 31 and the first pressure sensor 33 are arranged on the water inlet pipe of the meter clamping unit, the first temperature sensor 31 is used to detect the inlet water temperature of the heat meter to be tested, and the first pressure sensor 33 is used to detect the inlet water pressure of the heat meter to be tested; the second temperature sensor 32 and the second pressure sensor 34 are arranged on the water outlet pipe of the meter clamping unit, the second temperature sensor 32 is used to detect the outlet water temperature of the heat meter to be tested, and the second pressure sensor 34 is used to detect the outlet water pressure of the heat meter to be tested.

[0049] It can be understood that by setting up a temperature and pressure detection unit, including a first temperature sensor 31, a second temperature sensor 32, a first pressure sensor 33 and a second pressure sensor 34, accurate monitoring of the inlet and outlet water temperatures and pressures of the heat meter to be tested is achieved. The first temperature sensor 31 and the first pressure sensor 33 are located on the water inlet pipe of the clamping unit, and can obtain temperature and pressure data at the time of water inlet in real time, providing key parameters for the test. The second temperature sensor 32 and the second pressure sensor 34 are set on the water outlet pipe, responsible for monitoring the temperature and pressure changes at the time of water outlet. This comprehensive monitoring method not only helps to understand the performance of the heat meter under different working conditions, but also can promptly discover and solve potential problems, ensuring the durability and reliability of the heat meter.

[0050] In some embodiments of the present application, the meter clamping unit includes a meter clamp 40 and a protective device. The meter clamp 40 is used to clamp the heat meter, and the protective device is used to protect the heat meter.

[0051] As you can understand, the design of the clamping unit fully considers the safety and stability of the heat meter during testing. Clamp 40 is made of high-strength material, providing excellent clamping force and stability, ensuring that the heat meter will not loosen or shift due to water impact or other external forces during testing. Furthermore, the provision of a protective device effectively prevents accidental damage to the heat meter during testing, improving the safety and reliability of the test.

[0052] In some embodiments of the present application, the flow regulation detection unit includes six flow regulating valves and four flow meters, and the flow regulating valve inlets are connected to the clamping unit; wherein, the first flow regulating valve 51 and the second flow regulating valve 52 are connected in parallel, and the outlets of the first flow regulating valve 51 and the second flow regulating valve 52 are both connected to the first flow meter 61; the third flow regulating valve 53 and the fourth flow regulating valve 53 and the fourth flow regulating valve 54 are both connected to the second flow meter 62; the outlet of the fifth flow regulating valve 55 is connected to the third flow meter 63; the outlet of the sixth flow regulating valve 56 is connected to the fourth flow meter 64; the first flow meter 61, the second flow meter 62, the third flow meter 63 and the fourth flow meter 64 are connected in parallel;

[0053] As you can see, the design of the flow control and detection unit enables precise flow control and monitoring. The flexible configuration of the six flow control valves simulates different water flow conditions, meeting the testing requirements of heat meters under different operating conditions. The parallel configuration of four flow meters not only improves flow measurement accuracy but also enables simultaneous monitoring of multiple flow paths, ensuring comprehensive and reliable test data.

[0054] In some embodiments of the present application, the outlets of the first flow meter 61 , the second flow meter 62 , the third flow meter 63 and the fourth flow meter are all connected to the three ports of the second reversing valve 74 .

[0055] As can be appreciated, by connecting the outlets of all four flow meters to the three ports of the second reversing valve 74, flexible flow switching and routing is achieved. This design not only enhances the flexibility of the testing system but also allows for easy adjustment of flow direction and distribution as needed during testing. The introduction of the second reversing valve 74 provides more testing possibilities, enabling durability testing of heat meters under more complex operating conditions, thereby providing a more comprehensive assessment of their performance and durability.

[0056] like Figure 2 As shown, the present invention also discloses a heat meter durability test method, which is applied to the above-mentioned heat meter durability test device, comprising:

[0057] Install the heat meter to be tested on the clamping unit;

[0058] Determine the durability test type and select the water pump type and flow control valve according to the durability test type;

[0059] Start the selected water pump and flow regulating valve, and conduct a durability test on the heat meter to be tested.

[0060] In some embodiments of the present application, the durability test types include basic durability test, accelerated durability test-without moving mechanical parts, additional durability test and accelerated durability test-with moving mechanical parts.

[0061] In some embodiments of the present application, when a durability test is performed on a heat meter to be tested, a test cycle or test duration is determined according to the durability test type.

[0062] By setting different durability test types, the durability performance of heat meters in different usage environments can be more comprehensively evaluated. The basic durability test can simulate the life of the heat meter under normal use conditions; the accelerated durability test - no moving mechanical parts focuses on evaluating the durability of the non-mechanical components of the heat meter, shortening the test time by accelerating the test conditions and quickly screening out potential problems; the additional durability test can perform additional durability verification on the heat meter based on specific application requirements; and the accelerated durability test - with moving mechanical parts focuses on the durability of the mechanical components of the heat meter to ensure its stability and reliability over long-term operation.

[0063] In addition, determining the test cycle or test duration based on the durability test type can arrange the test plan more scientifically and reasonably, which not only ensures the accuracy of the test results but also improves the test efficiency.

[0064] To further illustrate this test method, the process of each durability test is described in detail.

[0065] 1. Basic durability test

[0066] System start-up; clamp the heat meter; open the flow regulating valve corresponding to the upper limit flow point 1.5qi; start the hot water pump and open the first reversing valve; open the water inlet valve; open the second reversing valve; temperature detection, reach the set temperature, and perform flow detection, when the outlet water flow reaches the set value 1.5qi, start the basic durability test; open the flow regulating valve corresponding to the upper limit flow point qp, and close the flow regulating valve corresponding to the upper limit flow point 1.5qi; when it is less than 15min, perform flow detection, when the outlet water flow reaches the set value qp, continue the basic durability test; run at the flow rate of qp for 8h; open the flow regulating valve corresponding to the upper limit flow point qs, and close the flow regulating valve corresponding to the upper limit flow point qp; flow detection, when the outlet water flow reaches the set value qs, continue the basic durability test; run at the flow rate qs for 1h; start The flow regulating valve corresponding to the upper limit flow point qp is opened, and the flow regulating valve corresponding to the upper limit flow point qs is closed; flow detection, when the outlet water flow reaches the set value qp, the basic durability test is continued; it runs for 8 hours at the qp flow; the flow regulating valve corresponding to the upper limit flow point 1.5qi is opened, and the flow regulating valve corresponding to the upper limit flow point qp is closed; flow detection, when the outlet water flow reaches the set value 1.5qi, the basic durability test is continued; it runs for 6 hours at the 1.5qi flow; if the cumulative cycle is less than 100, it returns to open the flow regulating valve corresponding to the upper limit flow point qp, and close the flow regulating valve corresponding to the upper limit flow point 1.5qi; if the cumulative cycle is greater than 100; the hot water pump is turned off; the drain valve is opened; the meter clamp is released; the drain valve is closed; the flow regulating valve corresponding to the upper limit flow point qi is closed; the reversing valve is closed; the system stops.

[0067] 2. Accelerated durability test - no moving mechanical parts

[0068] System start-up; clamp the meter; open the flow regulating valve corresponding to the upper limit flow point qi; start the cold water pump and open the first reversing valve; open the water inlet valve; open the second reversing valve; temperature detection, when the outlet water temperature is within the temperature range of 15℃-20℃, start the accelerated durability test; run at 15℃-20℃ for 2.5 minutes; turn off the cold water pump, turn on the hot water pump, and open the first reversing valve; temperature detection, when the outlet water temperature is within the temperature range of 80℃-85℃, continue the accelerated durability test; open the second reversing valve; run at 80℃-85℃ for 2.5 minutes, and one cycle is completed; if the cycle is less than 4000, return to the step of opening the water inlet valve; if the cycle is greater than 4000, turn off the hot water pump; open the drain valve; release the meter; close the drain valve; close the flow regulating valve corresponding to the upper limit flow point qi; close the reversing valve and stop the system.

[0069] 3. Additional durability test

[0070] System starts; clamp the meter; open the flow regulating valve corresponding to the upper limit flow point qs; start the hot water pump; open the reversing valve; perform temperature detection, and when the temperature is greater than the upper limit of the heat meter, start the additional durability test; set the continuous operation time; set the end of the continuous operation time; shut down the hot water pump; open the drain valve, the drain valve time can be set; release the meter clamp; close the drain valve; close the reversing valve; and stop the system.

[0071] 4. Accelerated durability test - with movable mechanical parts

[0072] System starts; clamp the meter; open the flow regulating valve corresponding to the upper limit flow point qs; start the hot water pump; open the reversing valve; perform temperature detection, when the outlet water temperature is greater than the set heating temperature, start the accelerated durability test; close the water inlet valve, run at 0 flow for 2.5 minutes; open the water inlet valve, run at the upper limit flow for 2.5 minutes, and one cycle is completed; if the accumulated cycle is less than 4000, return to the step of closing the water inlet valve and running at 0 flow for 2.5 minutes. If the accumulated cycle is greater than 4000, the hot water pump is turned off; open the drain valve, the drainage time can be set; release the meter clamp; close the drain valve; close the flow regulating valve corresponding to the upper limit flow point qs; close the reversing valve; and stop the system.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A heat meter durability test device, characterized in that: include: A water tank unit, a water pump unit, a temperature and pressure detection unit, a meter clamping unit, and a flow regulation detection unit, wherein the water tank unit, the water pump unit, the temperature and pressure detection unit, the meter clamping unit, and the flow regulation detection unit are sequentially connected through pipelines, and the flow detection unit is connected to the water tank unit; A first reversing valve and a water inlet valve are further provided between the water pump unit and the temperature and pressure detection unit, and a drain valve is provided between the meter clamping unit and the water tank unit.

2. The heat meter durability test device according to claim 1, characterized in that: The water tank unit includes a cold water tank and a hot water tank, a second reversing valve is provided between the cold water tank and the hot water tank, one port of the second reversing valve is connected to the hot water tank, and the second port of the second reversing valve is connected to the cold water tank; The cold water tank is connected to the drain valve, and a cold water temperature sensor is provided in the cold water tank for detecting the temperature of the cold water tank; A hot water temperature sensor is provided in the hot water tank for detecting the temperature of the hot water tank.

3. The heat meter durability test device according to claim 2, characterized in that: The water pump unit includes a cold water pump, a hot water pump, a cold water pneumatic valve and a hot water pneumatic valve; the cold water pump is connected to the cold water tank, and the cold water pneumatic valve is connected to the cold water pump; the hot water pump is connected to the hot water tank, and the hot water pneumatic valve is connected to the hot water pump; One port of the first reversing valve is connected to the hot water pneumatic valve, the second port of the first reversing valve is connected to the cold water pneumatic valve, and the third port of the first reversing valve is connected to the water inlet valve.

4. The heat meter durability test device according to claim 3, characterized in that: The temperature and pressure detection unit includes a first temperature sensor, a second temperature sensor, a first pressure sensor and a second pressure sensor; The first temperature sensor and the first pressure sensor are arranged on the water inlet pipe of the clamping unit, the first temperature sensor is used to detect the inlet water temperature of the heat meter to be tested, and the first pressure sensor is used to detect the inlet water pressure of the heat meter to be tested; The second temperature sensor and the second pressure sensor are arranged on the water outlet pipe of the meter clamping unit. The second temperature sensor is used to detect the outlet water temperature of the heat meter to be tested, and the second pressure sensor is used to detect the outlet water pressure of the heat meter to be tested.

5. The heat meter durability test device according to claim 4, characterized in that: The meter clamping unit includes a meter clamp and a protective device, wherein the meter clamp is used to clamp the heat meter, and the protective device is used to protect the heat meter.

6. The heat meter durability test device according to claim 5, characterized in that: The flow regulating and detecting unit comprises six flow regulating valves and four flow meters, and the inlet of the flow regulating valve is connected to the meter clamping unit; The first flow regulating valve and the second flow regulating valve are connected in parallel, and the outlets of the first flow regulating valve and the second flow regulating valve are both connected to the first flow meter; The third flow regulating valve and the fourth flow regulating valve are connected in parallel, and the outlets of the third flow regulating valve and the fourth flow regulating valve are both connected to the second flow meter; The outlet of the fifth flow regulating valve is connected to the third flow meter; The outlet of the sixth flow regulating valve is connected to the fourth flow meter; The first flow meter, the second flow meter, the third flow meter and the fourth flow meter are connected in parallel.

7. The heat meter durability test device according to claim 6, characterized in that: The outlets of the first flow meter, the second flow meter, the third flow meter and the fourth flow meter are all connected to the three ports of the second reversing valve.

8. A heat meter durability test method, applied to the heat meter durability test device according to any one of claims 1 to 7, characterized in that: include: Install the heat meter to be tested on the clamping unit; Determine the durability test type and select the water pump type and flow control valve according to the durability test type; Start the selected water pump and flow regulating valve, and conduct a durability test on the heat meter to be tested.

9. The heat meter durability test method according to claim 8, characterized in that: The durability test types include basic durability test, accelerated durability test - without moving mechanical parts, additional durability test and accelerated durability test - with moving mechanical parts.

10. The heat meter durability test method according to claim 9, characterized in that: When conducting a durability test on a heat meter to be tested, the test cycle or test duration is determined according to the type of durability test.

Images