Movable pipeline assembly adjustment characteristic demonstration experiment device

Abstract

The invention relates to a movable pipeline assembly adjusting characteristic demonstration experiment device, and belongs to the field of fluid power mechanical experiments. The device comprises a mobile vehicle, a calibration water tank, a water pump, an instrument display control panel, a water pump water inlet pipeline, a water pump water outlet pipeline, a water tank connecting pipeline, a regulating valve testing assembly, a flowmeter testing assembly, a pipe resistance testing assembly and a shut-off valve testing assembly. The device can test the performances of different parts, has the advantages of convenient movement, good volatility and stability control, high-precision data reading, clear demonstration interface and the like, can greatly improve the understanding and understanding of students in the directions of fluid mechanics, fluid transmission and distribution and the like by carrying out on-site teaching demonstration, and improves the teaching efficiency. A quantitative demonstration experiment with traceable measurement data is established, a traditional flow parameter measurement mode is optimized and improved, electric measurement data such as flow and pressure difference can be uploaded in real time, and the requirement of AI intelligent teaching is met.

Description

Technical Field

[0001] This invention relates to an experimental device for demonstrating the adjustment characteristics of a mobile pipeline assembly, belonging to the field of fluid dynamic machinery experiments. Background Technology

[0002] The construction industry is one of the key sectors contributing to carbon emissions in my country. According to statistics from recent years, energy consumption in the construction sector currently accounts for more than 30% of the total energy consumption of the national economy, with fluid transport and distribution systems accounting for more than 30% of that. Achieving a low-carbon transformation in the construction sector requires a life-cycle approach. Therefore, minimizing energy consumption during fluid transport and generation is a crucial focus in the teaching of fluid mechanics and related courses.

[0003] The ongoing "Smart City" framework based on "Internet+" involves various intelligent modules such as smart energy, smart municipal services, smart heating networks, smart gas, and smart water management, all of which involve fluid flow within pipeline systems. This requires that the fluid transmission and distribution network be adjustable, controllable, and respond rapidly to various hydraulic conditions. Therefore, the teaching of fluid mechanics and related courses often includes content on the adjustment characteristics of various components within the pipeline.

[0004] However, the current experimental teaching content in this area has the following problems, which leads to students' poor grasp of the fluid transport and distribution process in actual teaching, resulting in low teaching effectiveness.

[0005] 1. Regarding experimental facilities: Currently, most experiments in fluid mechanics and related fluid transport processes are conducted in laboratories. The experimental setups are large, mostly fixed, and occupy the entire space of the experimental hall, making it difficult to demonstrate them live in class. While showing experimental videos is helpful, students are not actively involved and have little sensory understanding of the flow phenomena. This results in students' relatively low level of mastery of this content in actual teaching.

[0006] 2. Regarding the quantitative display of measurement data: In student experiments across many courses such as fluid mechanics, fluid distribution networks, heating engineering, HVAC, heat and mass transfer principles and equipment, refrigeration technology, gas transmission and distribution, and gas combustion, the measurement of flow parameters still relies on reading the height of the water column in a pressure gauge (usually a 1cm diameter glass tube) to obtain pressure and then calculating flow rate. This method of obtaining flow parameters is outdated and completely out of step with the requirements of smart cities, which involve the real-time uploading of relevant data for various flow processes, enabling prediction, simulation, and control. Summary of the Invention

[0007] To address the mismatch between existing methods for obtaining flow parameters and the requirements of smart cities, this invention proposes a mobile pipeline component adjustment characteristic demonstration experimental device.

[0008] The technical solution adopted by the present invention to solve the above problems is as follows: The present invention includes a mobile vehicle, a calibration water tank, a water pump, an instrument display control panel, a water pump inlet pipe, a water pump outlet pipe, a water tank connection pipe, a regulating valve test assembly, and a flow meter test assembly; The water pump, the calibration water tank, and the instrument display control panel are all fixed on the mobile vehicle; The instrument display control panel includes a control module and an electrical contact pressure gauge sensor and a display screen, all of which are electrically connected to the control module. The inlet end of the water pump inlet pipe is connected to the calibration water tank, and the outlet end is connected to the water pump inlet. The water pump inlet pipe is equipped with a water pump inlet pressure measuring point; The inlet end of the water pump outlet pipe is connected to the outlet of the water pump; The water pump outlet pipe is equipped with a water pump outlet pressure measuring point; The pressure measuring point at the water pump inlet and the pressure measuring point at the water pump outlet are both connected to the electrical contact pressure gauge sensor, so that the electrical contact pressure gauge sensor can measure the pressure at the water pump inlet and outlet. The water pump outlet pipe is equipped with a water pump outlet flow meter; the water pump outlet flow meter is electrically connected to the instrument display control panel; The outlet end of the water tank connecting pipe is connected to the calibration water tank; a main pipeline valve is provided on the water tank connecting pipe; The regulating valve test assembly includes a regulating valve inlet pipe, a regulating valve outlet pipe, a gate valve, a gate valve test pipe, a manual regulating valve, and a manual regulating valve test pipe. The inlet end of the gate valve test pipe and the inlet end of the manual regulating valve test pipe are both connected to the outlet end of the regulating valve inlet pipe; the inlet end of the regulating valve inlet pipe is used for detachable connection with the outlet end of the water pump outlet pipe. The outlet end of the gate valve test pipe and the outlet end of the manual regulating valve test pipe are both connected to the inlet end of the regulating valve outlet pipe; the outlet end of the regulating valve outlet pipe is used for detachable connection to the inlet end of the pipe connecting the water tank. The gate valve is installed on the gate valve test pipeline, which is also equipped with a gate valve inlet pressure measuring point and a gate valve outlet pressure measuring point. Both the gate valve inlet pressure measuring point and the gate valve outlet pressure measuring point are used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the gate valve. The manual regulating valve is installed on the manual regulating valve test pipe. The manual regulating valve test pipe is also provided with a pressure measuring point at the inlet of the manual regulating valve and a pressure measuring point at the outlet of the manual regulating valve. Both the pressure measuring point at the inlet of the manual regulating valve and the pressure measuring point at the outlet of the manual regulating valve are used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the manual regulating valve. The flow meter testing assembly includes a flow meter inlet pipe, a flow meter outlet pipe, an electromagnetic flow meter, an electromagnetic flow meter test pipe, an electromagnetic flow meter valve, an ultrasonic heat meter, an ultrasonic heat meter test pipe, and an ultrasonic heat meter valve. The inlet end of the electromagnetic flowmeter test pipe and the inlet end of the ultrasonic heat meter test pipe are both connected to the outlet end of the flowmeter inlet pipe; the inlet end of the flowmeter inlet pipe is used for detachable connection with the outlet end of the water pump outlet pipe. The outlet end of the electromagnetic flowmeter test pipe and the outlet end of the ultrasonic heat meter test pipe are both connected to the inlet end of the flowmeter outlet pipe; the outlet end of the flowmeter outlet pipe is used for detachable connection to the inlet end of the pipe connecting the water tank. The flow meter inlet pipe is equipped with a flow meter inlet pressure measuring point; The flow meter outlet pipe is equipped with a flow meter outlet pressure measuring point; The pressure measuring point at the inlet of the flow meter and the pressure measuring point at the outlet of the flow meter are both detachably connected to the electrical contact pressure gauge sensor, so that the electrical contact pressure gauge sensor can measure the pressure on the inlet pipe and the outlet pipe of the flow meter. The electromagnetic flowmeter and the electromagnetic flowmeter valve are both installed on the electromagnetic flowmeter test pipe; The ultrasonic heat meter and the ultrasonic heat meter valve are both installed on the ultrasonic heat meter test pipe.

[0009] Furthermore, the present invention also includes a pipe resistance testing assembly; The pipe resistance testing assembly includes a pipe inlet pipe, a pipe outlet pipe, a stainless steel test pipe, a stainless steel pipe valve, a PPR test pipe, a PPR pipe valve, a U-PVC test pipe, and a U-PVC pipe valve. The inlet ends of the stainless steel test pipe, the PPR test pipe, and the U-PVC test pipe are all connected to the outlet end of the pipe inlet pipe; the inlet end of the pipe inlet pipe is used for detachable connection with the outlet end of the water pump outlet pipe. The outlet ends of the stainless steel test pipe, the PPR test pipe, and the U-PVC test pipe are all connected to the inlet end of the pipe outlet pipe; the outlet end of the pipe outlet pipe is used for detachable connection to the inlet end of the pipe connecting to the water tank. The stainless steel pipe valve is installed on the stainless steel test pipe. The stainless steel test pipe is also equipped with a stainless steel pipe valve inlet pressure measuring point and a stainless steel pipe valve outlet pressure measuring point. The stainless steel pipe valve inlet pressure measuring point and the stainless steel pipe valve outlet pressure measuring point are both used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the stainless steel pipe valve. The PPR pipe valve is installed on the PPR test pipe. The PPR test pipe is also equipped with a PPR pipe valve inlet pressure measuring point and a PPR pipe valve outlet pressure measuring point. Both the PPR pipe valve inlet pressure measuring point and the PPR pipe valve outlet pressure measuring point are used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the PPR pipe valve. The U-PVC pipe valve is installed on the U-PVC test pipe. The U-PVC test pipe is also equipped with an inlet pressure measuring point and an outlet pressure measuring point for the U-PVC pipe valve. Both the inlet and outlet pressure measuring points are detachably connected to the electrical contact pressure gauge sensor so that the electrical contact pressure gauge sensor can measure the pressure at the inlet and outlet of the U-PVC pipe valve.

[0010] Furthermore, the present invention also includes a shut-off valve test assembly; The shut-off valve test assembly includes a shut-off valve inlet pipe, a shut-off valve outlet pipe, a gate valve, a gate valve test pipe, a gate valve pipe valve, a horizontal check valve, a horizontal check valve test pipe, a horizontal check valve pipe valve, a filter, a filter test pipe, and a filter pipe valve. The inlet ends of the shut-off valve test pipe, the horizontal check valve test pipe, and the filter test pipe are all connected to the outlet end of the shut-off valve inlet pipe; the inlet end of the shut-off valve inlet pipe is detachably connected to the outlet end of the water pump outlet pipe. The outlet ends of the shut-off valve test pipe, the horizontal check valve test pipe, and the filter test pipe are all connected to the inlet end of the shut-off valve outlet pipe; the outlet end of the shut-off valve outlet pipe is detachably connected to the inlet end of the water tank connection pipe. The shut-off valve and the shut-off valve pipeline valve are both installed on the shut-off valve test pipeline. The shut-off valve test pipeline is also equipped with a shut-off valve inlet pressure measuring point and a shut-off valve outlet pressure measuring point. The shut-off valve inlet pressure measuring point and the shut-off valve outlet pressure measuring point are both used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the shut-off valve. The horizontal check valve and the horizontal check valve pipeline valve are both installed on the horizontal check valve test pipeline. The horizontal check valve test pipeline is also equipped with a horizontal check valve inlet pressure measuring point and a horizontal check valve outlet pressure measuring point. The horizontal check valve inlet pressure measuring point and the horizontal check valve outlet pressure measuring point are both used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the horizontal check valve. The filter and the filter pipeline valve are both installed on the filter test pipeline. The filter test pipeline is also equipped with a filter inlet pressure measuring point and a filter outlet pressure measuring point. The filter inlet pressure measuring point and the filter outlet pressure measuring point are both used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the filter.

[0011] The beneficial effects of this invention are: 1. By using testing components for regulating valves, flow meters, pipe resistance, and shut-off valves, the performance of different components is tested, allowing students to understand their structural performance and facilitating teaching. This design is open-ended, allowing for the interchangeability of multiple components, thus achieving the purpose of a multi-functional experimental platform.

[0012] 2. It boasts advantages such as convenient portability, good fluctuation and stability control, high-precision data reading, and a clear demonstration interface, meeting the requirements for classroom demonstration experiments. Conducting on-site teaching demonstrations can greatly enhance students' understanding and knowledge of fluid mechanics and fluid transport and distribution.

[0013] 3. Establish a "quantitative demonstration experiment with traceable measurement data", which optimizes and improves the traditional measurement method of flow parameters, enabling electrical measurement data such as flow rate and differential pressure to be uploaded to the school's digital intelligence platform in real time. This allows for real-time analysis of student status, helps teachers to accurately adjust teaching, and makes the classroom more efficient and personalized, thus meeting the requirements of "AI smart teaching". Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the experimental device for demonstrating the adjustment characteristics of the mobile pipeline assembly of the present invention; Figure 2 This is a schematic diagram of the structure of the regulating valve testing assembly in this invention; Figure 3 This is a schematic diagram of the flow meter testing component in this invention; Figure 4 This is a schematic diagram of the pipe resistance testing assembly in this invention; Figure 5 This is a schematic diagram of the structure of the shut-off valve test assembly in this invention.

[0015] Marker explanation: 1-Mobile vehicle; 2-Calibration water tank; 3-Water pump; 4-Instrument display control panel; 5-Water pump inlet pipe; 6-Water pump outlet pipe; 7-Water tank connection pipe; 8-Main pipeline valve; 9-Water pump outlet flow meter; 10-Handle; 11-Wheel; 12-Regulating valve inlet pipe; 13-Regulating valve outlet pipe; 14-Gate valve test pipe; 15-Gate valve inlet pressure measuring point; 16-Gate valve; 17-Gate valve outlet pressure measuring point; 18-Manual regulating valve test pipe; 19-Manual regulating valve inlet pressure measuring point; 20-Manual regulating valve; 21-Manual regulating valve outlet pressure measuring point; 22-Flow meter inlet pipe; 23-Flow meter outlet pipe; 24-Flow meter inlet pressure measuring point; 25-Flow meter outlet pressure measuring point; 26-Electromagnetic flow meter test pipe; 27-Electromagnetic flow meter; 28-Electromagnetic flow meter valve; 29-Ultrasonic heat meter test pipe; 30-Ultrasonic heat meter; 31-Ultrasonic heat meter valve; 32-Pipe inlet pipe; 33-Pipe outlet pipe; 34-Stainless steel test pipe; 35-Stainless steel pipe valve Pressure measuring point at the inlet of the valve; 36-Stainless steel pipe valve; 37-Stainless steel pipe valve outlet pressure measuring point; 38-PPR test pipe; 39-PPR pipe valve inlet pressure measuring point; 40-PPR pipe valve; 41-PPR pipe valve outlet pressure measuring point; 42-U-PVC test pipe; 43-U-PVC pipe valve inlet pressure measuring point; 44-U-PVC pipe valve; 45-U-PVC pipe valve outlet pressure measuring point; 46-Shut-off valve inlet pipe; 47-Shut-off valve outlet pipe; 4 8-Filter test pipeline; 49-Filter inlet pressure measuring point; 50-Filter; 51-Filter outlet pressure measuring point; 52-Filter pipeline valve; 53-Horizontal check valve test pipeline; 54-Horizontal check valve inlet pressure measuring point; 55-Horizontal check valve; 56-Horizontal check valve outlet pressure measuring point; 57-Horizontal check valve pipeline valve; 58-Gate valve test pipeline; 59-Gate valve inlet pressure measuring point; 60-Gate valve; 61-Gate valve outlet pressure measuring point; 62-Gate valve pipeline valve; 63-Relief valve. Detailed Implementation

[0016] Specific implementation method one: Combining Figures 1 to 5 This embodiment describes a mobile pipeline component adjustment characteristic demonstration experimental device, which includes a mobile vehicle 1, a calibration water tank 2, a water pump 3, an instrument display control panel 4, a water pump inlet pipe 5, a water pump outlet pipe 6, a water tank connection pipe 7, an adjustment valve test component, and a flow meter test component.

[0017] The water pump 3, calibration water tank 2, and instrument display control panel 4 are all fixed on the mobile vehicle 1.

[0018] The instrument display control panel 4 includes a control module and electrical contact pressure gauges, sensors, and displays that are all electrically connected to the control module; the water inlet pipe 5 has its inlet end connected to the calibration water tank 2 and its outlet end connected to the water inlet of the water pump 3.

[0019] The water pump inlet pipe 5 is equipped with a water pump inlet pressure measuring point; the water pump outlet pipe 6 is connected to the water pump outlet 3.

[0020] The water pump outlet pipe 6 is equipped with a water pump outlet pressure measuring point; both the water pump inlet pressure measuring point and the water pump outlet pressure measuring point are connected to an electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the water pump inlet and outlet. A water pump outlet flow meter 9 is installed on the water pump outlet pipe 6; the water pump outlet flow meter 9 is electrically connected to the instrument display control panel 4. The display screen of the instrument display control panel 4 displays the flow rate measured by the water pump outlet flow meter 9, which is convenient for experimental personnel to view directly.

[0021] The outlet of the water tank connecting pipe 7 is connected to the calibration water tank 2. The water tank connecting pipe 7 is equipped with a main pipeline valve 8.

[0022] like Figure 2 As shown, the control valve test assembly includes a control valve inlet pipe 12, a control valve outlet pipe 13, a gate valve 16, a gate valve test pipe 14, a manual control valve 20, and a manual control valve test pipe 18.

[0023] The inlet end of the gate valve test pipe 14 and the inlet end of the manual regulating valve test pipe 18 are both connected to the outlet end of the regulating valve inlet pipe 12; the inlet end of the regulating valve inlet pipe 12 is used for detachable connection with the outlet end of the water pump outlet pipe 6.

[0024] The outlet end of the gate valve test pipe 14 and the outlet end of the manual regulating valve test pipe 18 are both connected to the inlet end of the regulating valve outlet pipe 13; the outlet end of the regulating valve outlet pipe 13 is used to detachably connect to the inlet end of the water tank connection pipe 7.

[0025] A gate valve 16 is installed on a gate valve test pipe 14. The gate valve test pipe 14 is also equipped with a gate valve inlet pressure measuring point 15 and a gate valve outlet pressure measuring point 17. Both the gate valve inlet pressure measuring point 15 and the gate valve outlet pressure measuring point 17 are used to be detachably connected to an electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the gate valve 16. A manual regulating valve 20 is installed on a manual regulating valve test pipe 18. The manual regulating valve test pipe 18 is also equipped with a manual regulating valve inlet pressure measuring point 19 and a manual regulating valve outlet pressure measuring point 21. Both the manual regulating valve inlet pressure measuring point 19 and the manual regulating valve outlet pressure measuring point 21 are used to be detachably connected to an electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the manual regulating valve 20. When testing the performance of the regulating valve, connect the inlet end of the regulating valve inlet pipe 12 to the outlet end of the water pump outlet pipe 6. Connect the outlet end of the regulating valve outlet pipe 13 to the inlet end of the water tank connection pipe 7. Open one valve on each of the two test pipes and close the other. For example: open the gate valve 16, close the manual regulating valve 20, and then turn on the water pump 3. The water in the calibration water tank 2 will sequentially pass through the water pump inlet pipe 5, the water pump 3, the water pump outlet pipe 6, the regulating valve inlet pipe 12, the gate valve test pipe 14, the regulating valve outlet pipe 13, and the water tank connection pipe 7, finally entering the calibration water tank 2. The instrument display control panel 4 displays the pressure values ​​at the pressure measuring point 15 at the inlet of the gate valve 16 and the pressure measuring point 17 at the outlet of the gate valve.

[0026] Accordingly, the manual regulating valve 20 is opened, the gate valve 16 is closed, and then the water pump 3 is turned on. The water in the calibration water tank 2 flows sequentially through the water pump inlet pipe 5, the water pump 3, the water pump outlet pipe 6, the regulating valve inlet pipe 12, the manual regulating valve test pipe 18, the regulating valve outlet pipe 13, and the water tank connection pipe 7, finally entering the calibration water tank 2. The instrument display control panel 4 displays the pressure values ​​at the manual regulating valve inlet pressure measuring point 19 and the manual regulating valve outlet pressure measuring point 21.

[0027] The control valve test assembly performs flow characteristic tests on control valves. The flow characteristic of a control valve refers to the undetermined relationship between the relative flow rate of the fluid medium through the control valve and the relative opening degree of the control valve. The flow rate can be adjusted by changing the throttling area between the valve core and the valve seat. Simultaneously, the flow characteristics of gate valve 16 can also be tested accordingly.

[0028] This invention connects a regulating valve to a flow meter. By precisely measuring the pressure and flow changes of each part during the regulating valve's adjustment process, the working characteristic curve of the regulating valve in a series pipeline can be plotted on-site. This visual teaching method is of great benefit to students in understanding and mastering the difficult teaching point of regulating valve characteristics.

[0029] like Figure 3 As shown, the flow meter test assembly includes a flow meter inlet pipe 22, a flow meter outlet pipe 23, an electromagnetic flow meter 27, an electromagnetic flow meter test pipe 26, an electromagnetic flow meter valve 28, an ultrasonic heat meter 30, an ultrasonic heat meter test pipe 29, and an ultrasonic heat meter valve 31.

[0030] The inlet end of the electromagnetic flowmeter test pipe 26 and the inlet end of the ultrasonic heat meter test pipe 29 are both connected to the outlet end of the flowmeter inlet pipe 22; the inlet end of the flowmeter inlet pipe 22 is used for detachable connection with the outlet end of the water pump outlet pipe 6.

[0031] The outlet end of the electromagnetic flowmeter test pipe 26 and the outlet end of the ultrasonic heat meter test pipe 29 are both connected to the inlet end of the flowmeter outlet pipe 23; the outlet end of the flowmeter outlet pipe 23 is used to detachably connect to the inlet end of the water tank connection pipe 7.

[0032] A flow meter inlet pressure measuring point 24 is provided on the flow meter inlet pipe 22; a flow meter outlet pressure measuring point 25 is provided on the flow meter outlet pipe 23; both the flow meter inlet pressure measuring point 24 and the flow meter outlet pressure measuring point 25 are used to detachably connect to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure on the flow meter inlet pipe 22 and the flow meter outlet pipe 23; the electromagnetic flow meter 27 and the electromagnetic flow meter valve 28 are both installed on the electromagnetic flow meter test pipe 26; the ultrasonic heat meter 30 and the ultrasonic heat meter valve 31 are both installed on the ultrasonic heat meter test pipe 29.

[0033] When testing the flow meter's performance, connect the inlet end of the flow meter's inlet pipe 22 to the outlet end of the water pump's outlet pipe 6. Connect the outlet end of the flow meter's outlet pipe 23 to the inlet end of the water tank connection pipe 7. Open one of the valves, the electromagnetic flow meter valve 28 and the ultrasonic heat meter valve 31, and close the other. For example: open the electromagnetic flow meter valve 28, close the ultrasonic heat meter valve 31, and then turn on the water pump 3. The water in the calibration water tank 2 will sequentially pass through the water pump inlet pipe 5, the water pump 3, the water pump outlet pipe 6, the flow meter inlet pipe 22, the electromagnetic flow meter test pipe 26, the flow meter outlet pipe 23, and the water tank connection pipe 7, finally entering the calibration water tank 2. The instrument display control panel 4 displays the pressure values ​​at the flow meter inlet pressure measuring point 24 and the flow meter outlet pressure measuring point 25.

[0034] Accordingly, the ultrasonic heat meter valve 31 is opened, the electromagnetic flow meter valve 28 is closed, and then the water pump 3 is turned on. The water in the calibration tank 2 flows sequentially through the water pump inlet pipe 5, water pump 3, water pump outlet pipe 6, flow meter inlet pipe 22, ultrasonic heat meter test pipe 29, flow meter outlet pipe 23, and water tank connection pipe 7, finally entering the calibration tank 2. The instrument display control panel 4 displays the pressure values ​​at the flow meter inlet pressure measuring point 24 and the flow meter outlet pressure measuring point 25.

[0035] The flowmeter testing component conducts flowmeter characteristic testing experiments. There are many types of liquid flowmeters, each with different measurement principles, resulting in significant differences in measurement error across their entire measurement range. Furthermore, the flow coefficient of some types of flowmeters varies throughout the measurement range. From an engineering perspective, flow measurement in fluid distribution pipeline systems targets dynamic quantities, and its accuracy is affected by numerous factors. Inaccurate flow measurement directly impacts heat measurement results and significantly affects the hydraulic balance of the entire pipeline system. This invention, by combining an electromagnetic flowmeter 27 and an ultrasonic heat meter 30 with the flowmeter, allows students to gain a clear understanding of the flowmeter's measurement error and accuracy range through actual measurement data. During on-site experiments, students can adjust valves themselves, record the degree of flow change under different valve openings, and compare the data with the standard meter in the flow standard source to understand flow variation and the flowmeter's measurement accuracy, calculating its deviation and stability.

[0036] This invention electrically connects the pressure measuring point, flow meter, and instrument display control panel 4. The measured fluid pressure and flow rate are uploaded to and directly displayed on the instrument display control panel 4. This method of obtaining flow parameters through real-time upload is compatible with the requirements of smart cities.

[0037] Meanwhile, the present invention sets each test component on the mobile vehicle 1, which can be moved by the mobile vehicle 1, occupying little space and facilitating real-time on-site demonstration in teaching, allowing students to have a sensory understanding of the flow phenomenon in the experiment and improving students' mastery.

[0038] The calibration water tank 2 has a drain port on its side wall, and a drain valve 63 is installed at the drain port. Water in the calibration water tank 2 can be drained through the drain valve 63.

[0039] like Figure 4 As shown, the present invention also includes a pipe resistance testing assembly; the pipe resistance testing assembly includes a pipe inlet pipe 32, a pipe outlet pipe 33, a stainless steel test pipe 34, a stainless steel pipe valve 36, a PPR test pipe 38, a PPR pipe valve 40, a U-PVC test pipe 42, and a U-PVC pipe valve 44.

[0040] The inlet ends of the stainless steel test pipe 34, PPR test pipe 38, and U-PVC test pipe 42 are all connected to the outlet end of the pipe inlet pipe 32; the inlet end of the pipe inlet pipe 32 is used for detachable connection with the outlet end of the water pump outlet pipe 6.

[0041] The outlet ends of the stainless steel test pipe 34, PPR test pipe 38, and U-PVC test pipe 42 are all connected to the inlet end of the pipe outlet pipe 33; the outlet end of the pipe outlet pipe 33 is used to detachably connect to the inlet end of the water tank connection pipe 7.

[0042] The stainless steel pipe valve 36 is installed on the stainless steel test pipe 34. The stainless steel test pipe 34 is also equipped with a stainless steel pipe valve inlet pressure measuring point 35 and a stainless steel pipe valve outlet pressure measuring point 37. Both the stainless steel pipe valve inlet pressure measuring point 35 and the stainless steel pipe valve outlet pressure measuring point 37 are used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the stainless steel pipe valve 36.

[0043] PPR pipe valve 40 is installed on PPR test pipe 38. PPR test pipe 38 is also equipped with PPR pipe valve inlet pressure measuring point 39 and PPR pipe valve outlet pressure measuring point 41. Both PPR pipe valve inlet pressure measuring point 39 and PPR pipe valve outlet pressure measuring point 41 are used to be detachably connected to electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of PPR pipe valve 40.

[0044] U-PVC pipe valve 44 is installed on U-PVC test pipe 42. U-PVC test pipe 42 is also equipped with U-PVC pipe valve inlet pressure measuring point 43 and U-PVC pipe valve outlet pressure measuring point 45. Both U-PVC pipe valve inlet pressure measuring point 43 and U-PVC pipe valve outlet pressure measuring point 45 are used to be detachably connected to electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of U-PVC pipe valve 44.

[0045] When testing the resistance of different pipe materials, connect the inlet end of the pipe inlet pipe 32 to the outlet end of the water pump outlet pipe 6. Connect the outlet end of the pipe outlet pipe 33 to the inlet end of the water tank connection pipe 7. Open one of the stainless steel pipe valve 36, PPR pipe valve 40, or U-PVC pipe valve 44, and close the other two. For example: open the stainless steel pipe valve 36, close the PPR pipe valve 40 and the U-PVC pipe valve 44, then turn on the water pump 3. The water in the calibration water tank 2 flows sequentially through the water pump inlet pipe 5, water pump 3, water pump outlet pipe 6, pipe inlet pipe 32, stainless steel test pipe 34, pipe outlet pipe 33, and water tank connection pipe 7, finally entering the calibration water tank 2. The instrument display control panel 4 displays the pressure values ​​at the stainless steel pipe valve inlet pressure measuring point 35 and the stainless steel pipe valve outlet pressure measuring point 37. At this time, the resistance of the stainless steel pipe can be tested.

[0046] Correspondingly, the principle is similar when PPR pipe valve 40 is opened and stainless steel pipe valve 36 and U-PVC pipe valve 44 are closed, and will not be described in detail here. At this time, the resistance of the PPR pipe can be tested.

[0047] The principle is similar when opening the U-PVC pipe valve 44 and closing the PPR pipe valve 40 and stainless steel pipe valve 36, and will not be elaborated further. At this time, the resistance of the U-PVC pipe can be tested.

[0048] The pipe resistance testing kit conducts resistance tests on different pipe materials. Traditional fluid distribution networks typically use carbon steel and cast iron pipes. However, with the introduction of various new materials and technologies into pipe manufacturing processes, plastic and stainless steel pipes are now widely used in heating, gas supply, air conditioning, and water supply and drainage systems. Different pipe materials exhibit varying resistance to fluid transport. This invention utilizes stainless steel, PPR, and U-PVC pipes to conduct corresponding tests on the fluid transport resistance of these three types of pipes.

[0049] like Figure 5 As shown, the present invention also includes a shut-off valve test assembly; it also includes a shut-off valve test assembly; The shut-off valve test assembly includes a shut-off valve inlet pipe 46, a shut-off valve outlet pipe 47, a gate valve 60, a gate valve test pipe 58, a gate valve pipe valve 62, a horizontal check valve 55, a horizontal check valve test pipe 53, a horizontal check valve pipe valve 57, a filter 50, a filter test pipe 48, and a filter pipe valve 52.

[0050] The inlet ends of the gate valve test pipe 58, the horizontal check valve test pipe 53, and the filter test pipe 48 are all connected to the outlet end of the shut-off valve inlet pipe 46; the inlet end of the shut-off valve inlet pipe 46 is used for detachable connection with the outlet end of the water pump outlet pipe 6.

[0051] The outlet ends of the gate valve test pipe 58, the horizontal check valve test pipe 53, and the filter test pipe 48 are all connected to the inlet end of the shut-off valve outlet pipe 47; the outlet end of the shut-off valve outlet pipe 47 is used to detachably connect to the inlet end of the water tank connection pipe 7.

[0052] Both the shut-off valve 60 and the shut-off valve pipeline valve 62 are installed on the shut-off valve test pipeline 58. The shut-off valve test pipeline 58 is also equipped with a shut-off valve inlet pressure measuring point 59 and a shut-off valve outlet pressure measuring point 61. Both the shut-off valve inlet pressure measuring point 59 and the shut-off valve outlet pressure measuring point 61 are used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the shut-off valve 60.

[0053] The horizontal check valve 55 and the horizontal check valve pipeline valve 57 are both installed on the horizontal check valve test pipeline 53. The horizontal check valve test pipeline 53 is also equipped with a horizontal check valve inlet pressure measuring point 54 and a horizontal check valve outlet pressure measuring point 56. The horizontal check valve inlet pressure measuring point 54 and the horizontal check valve outlet pressure measuring point 56 are both used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the horizontal check valve 55.

[0054] The filter 50 and filter pipeline valve 52 are both installed on the filter test pipeline 48. The filter test pipeline 48 is also equipped with a filter inlet pressure measuring point 49 and a filter outlet pressure measuring point 51. The filter inlet pressure measuring point 49 and the filter outlet pressure measuring point 51 are both used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the filter 50.

[0055] When testing the performance of the shut-off valve, connect the inlet end of the shut-off valve inlet pipe 46 to the outlet end of the water pump outlet pipe 6. Connect the outlet end of the shut-off valve inlet pipe 46 to the inlet end of the water tank connection pipe 7. Open one of the shut-off valve 60, horizontal check valve 55, and filter 50, and close the other two. For example: open the shut-off valve 60, close the horizontal check valve 55 and filter 50, then turn on the water pump 3. The water in the calibration water tank 2 passes sequentially through the water pump inlet pipe 5, water pump 3, water pump outlet pipe 6, shut-off valve inlet pipe 46, shut-off valve 60 test pipe 58, shut-off valve outlet pipe 47, and water tank connection pipe 7, finally entering the calibration water tank 2. The instrument display control panel 4 displays the pressure values ​​at the shut-off valve inlet pressure measuring point 59 and the shut-off valve outlet pressure measuring point 61.

[0056] Correspondingly, the principle is similar when the horizontal check valve 55 is opened and the shut-off valve 60 and filter 50 are closed, or when the filter 50 is opened and the horizontal check valve 55 and shut-off valve 60 are closed, and will not be described in detail here.

[0057] The shut-off valve test assembly conducts resistance tests on different shut-off valves. In fluid distribution networks, fluid normally flows in the direction designed for operation. However, in accidental situations, the medium may flow backwards. The horizontal check valve 55 is a type of valve that automatically opens and closes without manual operation. It has only one flow direction, flowing only along the inlet and cannot flow backwards. When the medium flows backwards, the valve disc closes. Therefore, check valves are used in pipelines or equipment to prevent backflow, preventing pump and drive motor reversal, and preventing the release of medium from containers. The gate valve 60, also known as a stop valve, is a forced-seal valve. When the valve is closed, pressure must be applied to the valve disc to force a leak-proof seal. When the medium enters the valve from below the valve disc, the resistance that the operating force needs to overcome is the friction of the valve stem and packing, plus the thrust generated by the pressure of the medium. The force required to close the valve is greater than the force required to open it, so the valve stem diameter must be large; otherwise, the valve stem may bend. Filter 50 is an indispensable filtration device in pipeline systems that transport fluid media. It is typically installed at the inlet of pressure reducing valves, relief valves, shut-off valves 60, or other equipment to remove impurities from the media and protect the valves and equipment for normal operation. This invention employs a shut-off valve testing assembly to test the resistance of shut-off valve 60, horizontal check valve 55, and filter 50 respectively, allowing students to understand their performance.

[0058] The electrical contact pressure gauge sensor includes multiple sensing units, and each pressure measuring point is electrically connected to one of the sensing units to perform pressure testing.

[0059] The mobile vehicle 1 is equipped with wheels 11 at the bottom for easy movement. One end of the mobile vehicle 1 is equipped with a handle 10 for easy gripping by the experimenter.

[0060] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the scope of the present invention, based on the technical essence of the present invention, and within the spirit and principles of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A mobile pipeline assembly adjustment characteristic demonstration experimental device, characterized in that, This includes a mobile vehicle, a calibration water tank, a water pump, an instrument display control panel, a water pump inlet pipe, a water pump outlet pipe, a water tank connection pipe, a regulating valve test assembly, and a flow meter test assembly. The water pump, the calibration water tank, and the instrument display control panel are all fixed on the mobile vehicle; The instrument display control panel includes a control module and an electrical contact pressure gauge sensor and a display screen, all of which are electrically connected to the control module. The inlet end of the water pump inlet pipe is connected to the calibration water tank, and the outlet end is connected to the water pump inlet. The water pump inlet pipe is equipped with a water pump inlet pressure measuring point; The inlet end of the water pump outlet pipe is connected to the outlet of the water pump; The water pump outlet pipe is equipped with a water pump outlet pressure measuring point; The pressure measuring point at the water pump inlet and the pressure measuring point at the water pump outlet are both connected to the electrical contact pressure gauge sensor, so that the electrical contact pressure gauge sensor can measure the pressure at the water pump inlet and outlet. The water pump outlet pipe is equipped with a water pump outlet flow meter; the water pump outlet flow meter is electrically connected to the instrument display control panel; The outlet end of the water tank connecting pipe is connected to the calibration water tank; a main pipeline valve is provided on the water tank connecting pipe; The regulating valve test assembly includes a regulating valve inlet pipe, a regulating valve outlet pipe, a gate valve, a gate valve test pipe, a manual regulating valve, and a manual regulating valve test pipe. The inlet end of the gate valve test pipe and the inlet end of the manual regulating valve test pipe are both connected to the outlet end of the regulating valve inlet pipe; the inlet end of the regulating valve inlet pipe is used for detachable connection with the outlet end of the water pump outlet pipe. The outlet end of the gate valve test pipe and the outlet end of the manual regulating valve test pipe are both connected to the inlet end of the regulating valve outlet pipe; the outlet end of the regulating valve outlet pipe is used for detachable connection to the inlet end of the pipe connecting the water tank. The gate valve is installed on the gate valve test pipeline, which is also equipped with a gate valve inlet pressure measuring point and a gate valve outlet pressure measuring point. Both the gate valve inlet pressure measuring point and the gate valve outlet pressure measuring point are used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the gate valve. The manual regulating valve is installed on the manual regulating valve test pipe. The manual regulating valve test pipe is also provided with a pressure measuring point at the inlet of the manual regulating valve and a pressure measuring point at the outlet of the manual regulating valve. Both the pressure measuring point at the inlet of the manual regulating valve and the pressure measuring point at the outlet of the manual regulating valve are used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the manual regulating valve. The flow meter testing assembly includes a flow meter inlet pipe, a flow meter outlet pipe, an electromagnetic flow meter, an electromagnetic flow meter test pipe, an electromagnetic flow meter valve, an ultrasonic heat meter, an ultrasonic heat meter test pipe, and an ultrasonic heat meter valve. The inlet end of the electromagnetic flowmeter test pipe and the inlet end of the ultrasonic heat meter test pipe are both connected to the outlet end of the flowmeter inlet pipe; the inlet end of the flowmeter inlet pipe is used for detachable connection with the outlet end of the water pump outlet pipe. The outlet end of the electromagnetic flowmeter test pipe and the outlet end of the ultrasonic heat meter test pipe are both connected to the inlet end of the flowmeter outlet pipe; the outlet end of the flowmeter outlet pipe is used for detachable connection to the inlet end of the pipe connecting the water tank. The flow meter inlet pipe is equipped with a flow meter inlet pressure measuring point; The flow meter outlet pipe is equipped with a flow meter outlet pressure measuring point; The pressure measuring point at the inlet of the flow meter and the pressure measuring point at the outlet of the flow meter are both detachably connected to the electrical contact pressure gauge sensor, so that the electrical contact pressure gauge sensor can measure the pressure on the inlet pipe and the outlet pipe of the flow meter. The electromagnetic flowmeter and the electromagnetic flowmeter valve are both installed on the electromagnetic flowmeter test pipe; The ultrasonic heat meter and the ultrasonic heat meter valve are both installed on the ultrasonic heat meter test pipe.

2. The mobile pipeline assembly adjustment characteristic demonstration experimental device according to claim 1, characterized in that, It also includes a pipe resistance testing component; The pipe resistance testing assembly includes a pipe inlet pipe, a pipe outlet pipe, a stainless steel test pipe, a stainless steel pipe valve, a PPR test pipe, a PPR pipe valve, a U-PVC test pipe, and a U-PVC pipe valve. The inlet ends of the stainless steel test pipe, the PPR test pipe, and the U-PVC test pipe are all connected to the outlet end of the pipe inlet pipe; the inlet end of the pipe inlet pipe is used for detachable connection with the outlet end of the water pump outlet pipe. The outlet ends of the stainless steel test pipe, the PPR test pipe, and the U-PVC test pipe are all connected to the inlet end of the pipe outlet pipe; the outlet end of the pipe outlet pipe is used for detachable connection to the inlet end of the pipe connecting to the water tank. The stainless steel pipe valve is installed on the stainless steel test pipe. The stainless steel test pipe is also equipped with a stainless steel pipe valve inlet pressure measuring point and a stainless steel pipe valve outlet pressure measuring point. The stainless steel pipe valve inlet pressure measuring point and the stainless steel pipe valve outlet pressure measuring point are both used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the stainless steel pipe valve. The PPR pipe valve is installed on the PPR test pipe. The PPR test pipe is also equipped with a PPR pipe valve inlet pressure measuring point and a PPR pipe valve outlet pressure measuring point. Both the PPR pipe valve inlet pressure measuring point and the PPR pipe valve outlet pressure measuring point are used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the PPR pipe valve. The U-PVC pipe valve is installed on the U-PVC test pipe. The U-PVC test pipe is also equipped with an inlet pressure measuring point and an outlet pressure measuring point for the U-PVC pipe valve. Both the inlet and outlet pressure measuring points are detachably connected to the electrical contact pressure gauge sensor so that the electrical contact pressure gauge sensor can measure the pressure at the inlet and outlet of the U-PVC pipe valve.

3. The mobile pipeline assembly adjustment characteristic demonstration experimental device according to claim 2, characterized in that, It also includes a shut-off valve test assembly; The shut-off valve test assembly includes a shut-off valve inlet pipe, a shut-off valve outlet pipe, a gate valve, a gate valve test pipe, a gate valve pipe valve, a horizontal check valve, a horizontal check valve test pipe, a horizontal check valve pipe valve, a filter, a filter test pipe, and a filter pipe valve. The inlet ends of the shut-off valve test pipe, the horizontal check valve test pipe, and the filter test pipe are all connected to the outlet end of the shut-off valve inlet pipe; the inlet end of the shut-off valve inlet pipe is detachably connected to the outlet end of the water pump outlet pipe. The outlet ends of the shut-off valve test pipe, the horizontal check valve test pipe, and the filter test pipe are all connected to the inlet end of the shut-off valve outlet pipe; the outlet end of the shut-off valve outlet pipe is detachably connected to the inlet end of the water tank connection pipe. The shut-off valve and the shut-off valve pipeline valve are both installed on the shut-off valve test pipeline. The shut-off valve test pipeline is also equipped with a shut-off valve inlet pressure measuring point and a shut-off valve outlet pressure measuring point. The shut-off valve inlet pressure measuring point and the shut-off valve outlet pressure measuring point are both used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the shut-off valve. The horizontal check valve and the horizontal check valve pipeline valve are both installed on the horizontal check valve test pipeline. The horizontal check valve test pipeline is also equipped with a horizontal check valve inlet pressure measuring point and a horizontal check valve outlet pressure measuring point. The horizontal check valve inlet pressure measuring point and the horizontal check valve outlet pressure measuring point are both used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the horizontal check valve. The filter and the filter pipeline valve are both installed on the filter test pipeline. The filter test pipeline is also equipped with a filter inlet pressure measuring point and a filter outlet pressure measuring point. The filter inlet pressure measuring point and the filter outlet pressure measuring point are both used to be detachably connected to the electric contact pressure gauge sensor so that the electric contact pressure gauge sensor can measure the pressure at the inlet and outlet of the filter.

Images