Impact resistance test device and impact resistance test method for thermal state power pipeline system

Abstract

The invention discloses an impact resistance test device and an impact resistance test method for a thermal-state power pipeline system, relates to the technical field of impact resistance of power equipment, and solves the problems that a fluid-thermosetting coupling mechanism is not clear and response characteristics are difficult to predict in an impact resistance test of the power pipeline system. The device comprises a test pipeline section, a data acquisition system, a circulating water tank and a variable-frequency water supply device. The control method adjusts the working medium in the circulating water tank according to the set temperature, controls the flow velocity and pressure of the working medium in the pipeline of the test pipeline model by using the variable-frequency water supply device, and simulates the impact environment through the impact test bench. Meanwhile, the data acquisition system obtains the acceleration and strain of the structure and the flow velocity, temperature and pressure signals of the flow field so as to analyze the dynamic response of the pipeline system under the impact condition. The device has high controllability, high safety and accurate data acquisition capability, and can be widely applied to impact resistance research of a pipeline system.

Description

Technical Field

[0001] The invention relates to the technical field of anti-impact of power equipment, and in particular to an anti-impact test device for a hot power pipeline system. Background Art

[0002] In recent years, the impact resistance of pipeline systems has gradually attracted attention. Practice has found that even if the external structure remains intact under the impact load, its internal pipeline system may suffer functional damage due to the transmission of impact loads. Under the impact load, the support and hanger cannot effectively limit the displacement and deformation of the pipeline system, resulting in pipeline damage, which in turn causes the failure of related equipment. As an important part of the power system, damage to the power pipeline system may cause the power system to paralyze and seriously affect the normal operation of the equipment. At present, the experimental research on the impact resistance of the power pipeline system is still insufficient. In the impact resistance tests of the power pipeline system that have been carried out, the influence of the working fluid in the pipe is rarely considered, resulting in problems such as unclear fluid-thermal-solid coupling mechanism and difficult prediction of response characteristics in the impact resistance research of the power pipeline system.

[0003] Faced with complex impact environments and requirements for superior equipment impact resistance, clarifying the impact of fluid-thermal-solid coupling effects on the impact resistance of power pipeline systems under impact conditions will become the focus of research on the impact resistance of power pipeline systems. In order to improve the subsequent impact resistance design of power system pipelines and the development of related impact resistance standards, pipeline impact resistance tests and test data are needed to provide support. Summary of the invention

[0004] In view of the problems of unclear flow-heat-solid coupling mechanism and difficult-to-predict response characteristics in the impact resistance test of the power pipeline system mentioned above, the purpose of the present invention is to provide an impact resistance test device for hot power pipeline systems, which has high controllability, high safety and the ability to acquire accurate data, so as to provide accurate and reliable impact resistance data of the power pipeline system.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An impact resistance test device for a hot power pipeline system, comprising: a data acquisition system 1, a circulating water tank 2, a variable frequency water supply device 3 and a test pipeline section 4;

[0007] The test pipeline section 4 includes: an antifreeze and pressure-resistant water supply hose 403, an antifreeze and pressure-resistant water return hose 404, a test pipeline model 405 and a water return pressure regulating valve 406. The water supply port of the test pipeline model 405 is connected to the antifreeze and pressure-resistant water supply hose 403, the water return port of the test pipeline model 405 is connected to the antifreeze and pressure-resistant water return hose 404, and the water return port of the test pipeline model 405 is installed with a water return pressure regulating valve 406. The water return pressure regulating valve 406 is used to adjust the water return port pressure of the test pipeline model 405. The test pipeline model 405 is provided with a plurality of straight pipe structures, a plurality of curved pipe structures and at least one three-way pipe structure.

[0008] The variable frequency water supply device 3 is installed on the circulating water tank 2, the antifreeze and pressure-resistant water supply hose 403 is connected to the variable frequency water supply device 3, and the antifreeze and pressure-resistant water return hose 404 is connected to the circulating water tank 2;

[0009] The data acquisition system 1 includes: a strain gauge 102, a water inlet shockproof pressure gauge 104, a data acquisition instrument 105 and a three-way strain gauge 107. The strain gauge 102, the water inlet shockproof pressure gauge 104 and the three-way strain gauge 107 are all assembled on the test pipeline model 405. The strain gauge 102 is bonded to the elbow structure of the test pipeline model 405, and the three-way strain gauge 107 is bonded to the three-way pipe structure of the test pipeline model 405. Multiple strain gauges 102 and multiple three-way strain gauges 107 are respectively connected to the data acquisition instrument 105 through cables. The water inlet shockproof pressure gauge 104 is used to monitor the water supply port pressure of the test pipeline model 405.

[0010] The above-mentioned impact resistance test device for hot power pipeline system, wherein the circulating water tank 2 includes: a circulating water tank body 207, on which a first threaded connection port 204 and a first flange connection port 208 are provided, and the first threaded connection port 204 and the antifreeze and pressure-resistant return water hose 404 are threadedly connected and interconnected; the variable frequency water supply device 3 includes: a large-flow variable frequency pipeline pump 301, a second flange connection port 303 is provided at the end of the water inlet pipeline of the large-flow variable frequency pipeline pump 301, and a second threaded connection port 305 is provided at the end of the drainage pipeline of the large-flow variable frequency pipeline pump 301, and the second threaded connection port 305 and the antifreeze and pressure-resistant water supply hose 403 are threadedly connected and interconnected; the first flange connection port 208 and the second flange connection port 303 are flange-connected and interconnected.

[0011] The above-mentioned impact resistance test device for hot power pipeline system, wherein the variable frequency water supply device 3 also includes: a pipeline pump shockproof pressure gauge 302, an electromagnetic flowmeter 304 and an integrated pipeline split flange ball valve 306, the pipeline pump shockproof pressure gauge 302 is installed at the drain outlet of the large-flow variable frequency pipeline pump 301, and the electromagnetic flowmeter 304 and the integrated pipeline split flange ball valve 306 are both installed on the drain pipeline of the large-flow variable frequency pipeline pump 301.

[0012] The above-mentioned impact resistance test device for hot power pipeline system, wherein the circulating water tank 2 also includes: a water tank water inlet 201, a PID temperature control heater 203, an axial thermometer 205 and a visual temperature control box 206, and the top of the circulating water tank body 207 is equipped with a water tank water inlet 201 that can be opened and closed, and the PID temperature control heater 203, the axial thermometer 205 and the visual temperature control box 206 are all installed on the top of the circulating water tank body 207.

[0013] In the above-mentioned impact resistance test device for hot power pipeline system, the circulating water tank 2 further includes: a portable moving part 202, and the portable moving part 202 is installed on the top of the circulating water tank body 207.

[0014] The above-mentioned impact test device for hot power pipeline system, wherein the test pipeline section 4 also includes: a tooling frame 407, fastening bolts 408 and an impact test bench 4010, the tooling frame 407 is installed on the upper surface of the impact test bench 4010 and is connected by multiple fastening bolts 408.

[0015] The above-mentioned impact resistance test device for hot power pipeline system, wherein the test pipeline section 4 also includes: pipeline fixings 401 and pipeline support steel frames 402, multiple pipeline support steel frames 402 are installed on the upper surface of the tooling stand 407, multiple pipeline support steel frames 402 are used to support the test pipeline model 405, and multiple pipeline support steel frames 402 and the test pipeline model 405 are connected through multiple pipeline fixings 401.

[0016] The above-mentioned impact resistance test device for hot power pipeline system, wherein the test pipeline section 4 also includes: a pipeline cold-proof and heat-insulating layer 409 , and the outer surface of the test pipeline model 405 is covered with the pipeline cold-proof and heat-insulating layer 409 .

[0017] The above-mentioned impact resistance test device for hot power pipeline system, wherein the data acquisition system 1 also includes: at least one first acceleration sensor 109 and one second acceleration sensor 1010, a first acceleration sensor 109 is installed on any pipeline support steel frame 402, and the second acceleration sensor 1010 is installed on the upper surface of the tooling stand 407, and multiple first acceleration sensors 109 and second acceleration sensors 1010 are respectively connected to the data acquisition instrument 105 through cables, and the first acceleration sensor 109 and the second acceleration sensor 1010 are both three-axis acceleration sensors.

[0018] The above-mentioned impact resistance test device for hot power pipeline system, wherein the data acquisition system 1 also includes: a mass flow meter 101, a pipe wall temperature sensor 103, a pressure sensor 106 and a temperature sensor 108, the mass flow meter 101, the pipe wall temperature sensor 103, the pressure sensor 106 and the temperature sensor 108 are all assembled on the test pipeline model 405, and the mass flow meter 101, the pipe wall temperature sensor 103, the pressure sensor 106 and the temperature sensor 108 are respectively connected to the data acquisition instrument 105 through cables.

[0019] Due to the adoption of the above technology, the present invention has the following positive effects compared with the prior art:

[0020] (1) In the present invention, the device includes a test pipeline section, a data acquisition system, a circulating water tank and a variable frequency water supply device. The control method adjusts the working fluid in the circulating water tank according to the set temperature, and uses the variable frequency water supply device to control the flow rate and pressure of the working fluid inside the pipeline of the test pipeline model, and simulates the impact environment through the impact test bench. At the same time, the data acquisition system obtains structural acceleration, strain, flow field velocity, temperature and pressure signals to analyze the dynamic response of the pipeline system under impact conditions. This device has high controllability, high safety and the ability to obtain accurate data, and can be widely used in the impact resistance research of pipeline systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an impact resistance test device for a hot power pipeline system of the present invention.

[0022] Figure 2 The present invention is a structural schematic diagram of a data acquisition system for an impact resistance test device for a hot power pipeline system.

[0023] Figure 3 The present invention is a schematic structural diagram of a circulating water tank of an impact resistance test device for a hot power pipeline system.

[0024] Figure 4 The present invention is a schematic structural diagram of a variable frequency water supply device for an impact resistance test device of a hot power pipeline system.

[0025] Figure 5 The present invention is a schematic structural diagram of a test pipeline section without a pipeline cold-proof and heat-insulating layer of an impact resistance test device for a hot power pipeline system.

[0026] Figure 6 The present invention is a schematic structural diagram of a test pipeline section of an impact resistance test device for a hot power pipeline system.

[0027] Figure 7The present invention is a schematic cross-sectional view of the local structure of a test pipeline section of an impact resistance test device for a hot power pipeline system.

[0028] In the attached figure: 1. Data acquisition system; 2. Circulating water tank; 3. Frequency conversion water supply device; 4. Test pipe section; 101. Mass flow meter; 102. Strain gauge; 103. Pipe wall temperature sensor; 104. Water inlet shockproof pressure gauge; 105. Data acquisition instrument; 106. Pressure sensor; 107. Three-way strain gauge; 108. Temperature sensor; 109. First acceleration sensor; 1010. Second acceleration sensor; 201. Water tank water inlet; 202. Portable moving part; 203. PID temperature control heater; 204. First threaded connection port; 205. Axial thermometer; 206. Visual temperature control Box making; 207, circulating water tank body; 208, first flange connection; 301, large flow variable frequency pipeline pump; 302, pipeline pump shockproof pressure gauge; 303, second flange connection; 304, electromagnetic flowmeter; 305, second threaded connection; 306, integrated pipeline split flange ball valve; 401, pipeline fixings; 402, pipeline support steel frame; 403, antifreeze and pressure-resistant water supply hose; 404, antifreeze and pressure-resistant return hose; 405, test pipeline model; 406, return water pressure regulating valve; 407, tooling stand; 408, fastening bolts; 409, pipeline anti-cold insulation layer; 4010, impact test bench. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0030] Please refer to Figures 1 to 7 As shown, an impact resistance test device for a hot power pipeline system is shown, which includes: a data acquisition system 1, a circulating water tank 2, a variable frequency water supply device 3 and a test pipeline section 4;

[0031] The test pipeline section 4 includes: an antifreeze and pressure-resistant water supply hose 403, an antifreeze and pressure-resistant water return hose 404, a test pipeline model 405 and a water return pressure regulating valve 406. The water supply port of the test pipeline model 405 is connected to the antifreeze and pressure-resistant water supply hose 403, the water return port of the test pipeline model 405 is connected to the antifreeze and pressure-resistant water return hose 404, and the water return port of the test pipeline model 405 is installed with a water return pressure regulating valve 406. The water return pressure regulating valve 406 is used to adjust the water return port pressure of the test pipeline model 405. The test pipeline model 405 is provided with a plurality of straight pipe structures, a plurality of curved pipe structures and at least one three-way pipe structure.

[0032] The variable frequency water supply device 3 is installed on the circulating water tank 2, the antifreeze and pressure-resistant water supply hose 403 is connected to the variable frequency water supply device 3, and the antifreeze and pressure-resistant water return hose 404 is connected to the circulating water tank 2;

[0033] The data acquisition system 1 includes: a strain gauge 102, a water inlet shockproof pressure gauge 104, a data acquisition instrument 105 and a three-way strain gauge 107. The strain gauge 102, the water inlet shockproof pressure gauge 104 and the three-way strain gauge 107 are all assembled on the test pipeline model 405. The strain gauge 102 is bonded to the elbow structure of the test pipeline model 405, and the three-way strain gauge 107 is bonded to the three-way pipe structure of the test pipeline model 405. Multiple strain gauges 102 and multiple three-way strain gauges 107 are respectively connected to the data acquisition instrument 105 through cables. The water inlet shockproof pressure gauge 104 is used to monitor the water supply port pressure of the test pipeline model 405.

[0034] Further, in a preferred embodiment, the circulating water tank 2 includes: a circulating water tank body 207, on which a first threaded connection port 204 and a first flange connection port 208 are provided, and the first threaded connection port 204 and the antifreeze and pressure-resistant return water hose 404 are threadedly connected and interconnected; the variable frequency water supply device 3 includes: a large-flow variable frequency pipeline pump 301, a second flange connection port 303 is provided at the end of the water inlet pipeline of the large-flow variable frequency pipeline pump 301, and a second threaded connection port 305 is provided at the end of the drainage pipeline of the large-flow variable frequency pipeline pump 301, and the second threaded connection port 305 and the antifreeze and pressure-resistant water supply hose 403 are threadedly connected and interconnected; the first flange connection port 208 and the second flange connection port 303 are flange-connected and interconnected.

[0035] Furthermore, in a preferred embodiment, the variable frequency water supply device 3 also includes: a pipeline pump shockproof pressure gauge 302, an electromagnetic flowmeter 304 and an integrated pipeline split flange ball valve 306, the pipeline pump shockproof pressure gauge 302 is installed at the drain outlet of the large-flow variable frequency pipeline pump 301, and the electromagnetic flowmeter 304 and the integrated pipeline split flange ball valve 306 are both installed on the drain pipeline of the large-flow variable frequency pipeline pump 301.

[0036] Furthermore, in a preferred embodiment, the circulating water tank 2 also includes: a water tank water inlet 201, a PID temperature control heater 203, an axial thermometer 205 and a visual temperature control box 206, and a water tank water inlet 201 that can be opened and closed is installed on the top of the circulating water tank body 207, and the PID temperature control heater 203, the axial thermometer 205 and the visual temperature control box 206 are all installed on the top of the circulating water tank body 207.

[0037] Furthermore, in a preferred embodiment, the circulating water tank 2 further includes: a portable movable member 202 , which is installed on the top of the circulating water tank body 207 .

[0038] Furthermore, in a preferred embodiment, the test pipeline section 4 also includes: a tooling frame 407 , fastening bolts 408 and an impact test bench 4010 , and the tooling frame 407 is installed on the upper surface of the impact test bench 4010 and is connected by a plurality of fastening bolts 408 .

[0039] Furthermore, in a preferred embodiment, the test pipeline section 4 also includes: pipeline fixings 401 and pipeline supporting steel frames 402, multiple pipeline supporting steel frames 402 are installed on the upper surface of the tooling stand 407, multiple pipeline supporting steel frames 402 are used to support the test pipeline model 405, and multiple pipeline supporting steel frames 402 and the test pipeline model 405 are connected through multiple pipeline fixings 401.

[0040] Furthermore, in a preferred embodiment, the test pipeline section 4 also includes: a pipeline cold-proof and heat-insulating layer 409 , and the outer surface of the test pipeline model 405 is covered with the pipeline cold-proof and heat-insulating layer 409 .

[0041] Furthermore, in a preferred embodiment, the data acquisition system 1 also includes: at least one first acceleration sensor 109 and one second acceleration sensor 1010, a first acceleration sensor 109 is installed on any pipeline support steel frame 402, and the second acceleration sensor 1010 is installed on the upper surface of the tooling stand 407, and multiple first acceleration sensors 109 and second acceleration sensors 1010 are respectively connected to the data acquisition instrument 105 through cables, and the first acceleration sensor 109 and the second acceleration sensor 1010 are both three-axis acceleration sensors.

[0042] Furthermore, in a preferred embodiment, the data acquisition system 1 also includes: a mass flow meter 101 and a temperature sensor 108, both of which are assembled on the test pipeline model 405, and both of which are connected to the data acquisition instrument 105 via cables.

[0043] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention.

[0044] The present invention also has the following implementation modes based on the above:

[0045] In a further embodiment of the present invention, an anti-impact test device for a hot power pipeline system relates to the field of anti-impact of power equipment, and is intended to solve the problem of ignoring the influence of the temperature and pressure of the working fluid in the pipe in the existing anti-impact test of the pipeline system. The device includes a test pipeline section 4, a data acquisition system 1, a circulating water tank 2, and a variable frequency water supply device 3. Its control method adjusts the working fluid in the circulating water tank 2 according to the set temperature, and uses the variable frequency water supply device 3 to control the flow rate and pressure of the working fluid inside the pipeline of the test pipeline model 405, and simulates the impact environment through the impact test bench 4010. At the same time, the data acquisition system 1 obtains structural acceleration, strain, and flow field velocity, temperature and pressure signals to analyze the dynamic response of the pipeline system under impact conditions. The device has high controllability, high safety and the ability to obtain accurate data, and can be widely used in the anti-impact research of pipeline systems. The variable frequency water supply device 3 can use a variable frequency water pump.

[0046] In a further embodiment of the present invention, an impact test device for a hot power pipeline system includes a test pipeline section 4, a data acquisition system 1, a circulating water tank 2, and a variable frequency water supply device 3. The test pipeline section 4 of the test device is connected to the circulating water tank 2 and the variable frequency water supply device 3 through the internal threads of the water supply port and the return port on the test pipeline model 405, and the acceleration signal, strain signal, temperature signal, flow signal, and pressure signal of the test pipeline section 4 are monitored and collected by the data acquisition system 1. Figure 1 and Figure 2 .

[0047] In a further embodiment of the present invention, optionally, in the impact resistance test device for a hot power pipeline system according to the present application, the test pipeline section 4 includes a test pipeline model 405, a pipeline anti-cold insulation layer 409, an antifreeze and pressure-resistant water supply hose 403, an antifreeze and pressure-resistant return water hose 404, a return water pressure regulating valve 406, a pipeline fixing 401, a pipeline support steel frame 402, a tooling stand 407, an impact test bench 4010, and fastening bolts 408.

[0048] In a further embodiment of the present invention, optionally, in the impact resistance test device for the hot power pipeline system according to the present application, the pipeline fixing member 401 is connected to the test pipeline model 405 in a binding connection form, and the pipeline support steel frame 402 is fixed to the pipeline fixing member 401 by bolt connection;

[0049] In a further embodiment of the present invention, optionally, in the impact test device for the hot power pipeline system according to the present application, the antifreeze and pressure-resistant water supply hose 403 is connected to the test pipeline model 405 by means of threads, the antifreeze and pressure-resistant water return hose 404 is connected to the return water pressure regulating valve 406 by means of threads, and the return water pressure regulating valve 406 is connected to the test pipeline model 405 by means of flange connection;

[0050] In a further embodiment of the present invention, optionally, in the impact test device for the hot power pipeline system according to the present application, the pipeline cold-proof insulation layer 409 is bound to the test pipeline model 405 by a plastic buckle to reduce heat loss during the test; Figure 6 and Figure 7 shown.

[0051] In a further embodiment of the present invention, optionally, in the impact test device for a hot power pipeline system according to the present application, the pipeline support steel frame 402 is fixed to the tooling bench 407 by bolt connection, and the tooling bench 407 is fixed to the impact test bench 4010 by fastening bolts 408 to protect the impact test bench 4010.

[0052] In a further embodiment of the present invention, optionally, in the impact resistance test device for the hot power pipeline system according to the present application, the test pipeline model 405 has an inner diameter of 64 mm and an outer diameter of 80 mm; the pipeline support steel frame 402 is welded by an angle steel with a size of 50×50×4 mm and a 10 mm thick steel plate; the antifreeze and pressure-resistant water supply hose 403 and the antifreeze and pressure-resistant return water hose 404 both have an inner diameter of 64 mm and an outer diameter of 74 mm; the return water pressure regulating valve 406 has a return water port pressure adjustment range of 0.05 to 0.6 MPa for the test pipeline model 405, and the return water pressure regulating valve 406 is equipped with a shock-proof pressure gauge; the size of the fastening bolt 408 is M30×90 mm.

[0053] In a further embodiment of the present invention, optionally, in the impact test device for hot power pipeline system according to the present application, the test pipeline section 4 is connected to the circulating water tank 2 through the antifreeze and pressure-resistant return hose 404; the data acquisition system 1 includes a first acceleration sensor 109, a second acceleration sensor 1010, a strain gauge 102, a three-dimensional strain gauge 107, a mass flow meter 101, a temperature sensor 108, a water inlet shockproof pressure gauge 104 and a data acquisition instrument 105; the water inlet shockproof pressure gauge 104 is fixed to the inlet straight pipe section of the test pipeline model 405 by embedded welding to monitor the internal inlet pressure of the test pipeline model 405. The first acceleration sensor 109 and the second acceleration sensor 1010 are both three-dimensional acceleration sensors.

[0054] In a further embodiment of the present invention, optionally, in the impact resistance test device for a hot power pipeline system according to the present application, the circulating water tank 2 includes a water tank water inlet 201, a portable moving part 202, a PID temperature control heater 203, a first threaded connection port 204, a visual temperature control box 206, a circulating water tank body 207, an axial thermometer 205, and a first flange connection port 208.

[0055] In a further embodiment of the present invention, optionally, in the impact resistance test device for the hot power pipeline system according to the present application, the water tank water inlet 201 is located at the top of the circulating water tank body 207 and is provided with a closed switch; a portable moving part 202 is installed at the top of the circulating water tank body 207 to move the circulating water tank 2; the axial thermometer 205, the visual temperature control box 206 and the PID temperature control heater 203 are rigidly fixed to the top of the circulating water tank body 207 by embedded welding;

[0056] In a further embodiment of the present invention, optionally, in the impact resistance test device for a hot power pipeline system according to the present application, the first threaded connection port 204 and the first flange connection port 208 are fixed to the circulating water tank body 207 by welding.

[0057] In a further embodiment of the present invention, optionally, in the impact test device for the hot power pipeline system according to the present application, the water tank water inlet 201 is used to inject the working medium into the circulating water tank body 207; the visual temperature control box 206 is used to set the working medium temperature in the circulating water tank body 207 according to the test conditions; the PID temperature control heater 203 is used to heat and control the working medium temperature in the circulating water tank 2, and the heating power is 0 to 20kW; the axial thermometer 205 is used to monitor the working medium temperature inside the circulating water tank 2;

[0058] In a further embodiment of the present invention, optionally, in the impact resistance test device for a hot power pipeline system according to the present application, the first flange connection port 208 of the circulating water tank 2 is connected to the variable frequency water supply device 3 by a flange connection;

[0059] In a further embodiment of the present invention, optionally, in the impact resistance test device for the hot power pipeline system according to the present application, the first threaded connection port 204 of the circulating water tank 2 and the antifreeze and pressure-resistant return water hose 404 are fixed by a threaded connection.

[0060] In a further embodiment of the present invention, optionally, in the impact resistance test device for the hot power pipeline system according to the present application, the variable frequency water delivery device 3 includes a large flow variable frequency pipeline pump 301, a pipeline pump shockproof pressure gauge 302, a second flange connection port 303, an electromagnetic flowmeter 304, a second threaded connection port 305, and an integrated pipeline split flange ball valve 306;

[0061] In a further embodiment of the present invention, optionally, in the impact resistance test device for the hot power pipeline system according to the present application, the large flow variable frequency pipeline pump 301 is equipped with a pipeline pump shockproof pressure gauge 302, and is fixed to the second flange connection port 303 by welding, and the large flow variable frequency pipeline pump 301, the integrated pipeline split flange ball valve 306, the electromagnetic flowmeter 304, and the second threaded connection port 305 are fixed in sequence by flange connection;

[0062] In a further embodiment of the present invention, optionally, in the impact test device for hot power pipeline system according to the present application, the variable frequency water delivery device 3 is used to control and adjust the flow speed and pressure of the working medium inside the test device. The pressure regulation range of the large flow variable frequency pipeline pump 301 is 2 to 30 kg / s.

[0063] In a further embodiment of the present invention, optionally, in the impact test device for a hot power pipeline system according to the present application, the impact test device for a hot power pipeline system according to the present application is used, and the following steps are included in order:

[0064] Step 1: Install and arrange the test pipeline model 405, antifreeze and pressure-resistant water supply hose 403, antifreeze and pressure-resistant water return hose 404, pipeline fixtures 401, pipeline support steel frame 402, tooling stand 407, and impact test bench 4010 according to the design requirements. According to the design requirements, arrange the test pipeline section 4, circulating water tank 2, variable frequency water supply device 3 and data acquisition system 1, build the test system loop, and ensure normal operation during the test.

[0065] Step 2: Inject the working fluid into the circulating water tank body 207 through the water tank water inlet 201, close the water tank water inlet 201 after filling, set the working temperature through the visual temperature control box 206, and set the return water pressure through the return water pressure regulating valve 406, then start the PID temperature control heater 203 to heat the working fluid inside the circulating water tank 2. After the working fluid temperature reaches the set working temperature, open the integrated pipeline split flange ball valve 306, start the large flow variable frequency pipeline pump 301, observe the electromagnetic flowmeter 304 and the water inlet shockproof pressure gauge 104, and ensure that the working fluid flow rate and pressure in the test pipeline section 4 meet the set working conditions.

[0066] Step 3: Start the data acquisition system 1 to collect data from the test device without impact. After the data curve is stable, start the impact test bench 4010 and set the impact load parameters of the impact test bench 4010, including the shock wave type, duration and load intensity, and perform the impact test of the power pipeline system until the impact load input is completed.

[0067] Step 4: During the loading test, the PID temperature control heater 203 maintains the working fluid temperature at the inlet of the test device at the set value, the variable frequency water supply device 3 adjusts the working fluid flow rate and pressure in the test pipeline section 4, and the impact test bench 4010 simulates the actual impact environment. The three work together to simulate the dynamic response process of the internal flow field of the power pipeline system and the external structural mechanical behavior characteristics under impact conditions.

[0068] In a further embodiment of the present invention, according to one aspect of the present application, an impact test device for a hot power pipeline system is provided. The impact test device for a hot power pipeline system of the present application includes: a test pipeline section 4, a data acquisition system 1, a circulating water tank 2 and a variable frequency water supply device 3; its control method includes: constructing a pipeline system loop, controlling the working medium in the circulating water tank 2 according to the set temperature and set pressure, using the impact test bench 4010 to simulate the impact environment, and controlling the flow rate of the working medium inside the pipeline through a large flow variable frequency pipeline pump 301; at the same time, using the data acquisition system 1 to collect structural acceleration, strain, flow field velocity, pressure and temperature signals, so as to analyze the dynamic response process of the internal flow field of the pipeline system and the external structural mechanical behavior characteristics under impact conditions.

[0069] In a further embodiment of the present invention, optionally, in the impact resistance test device for the hot power pipeline system according to the present application, the data acquisition device includes: a first acceleration sensor 109, a second acceleration sensor 1010, a strain gauge 102, a three-dimensional strain gauge 107, a mass flow meter 101, a temperature sensor 108, a water inlet shockproof pressure gauge 104 and a data acquisition instrument 105; the first acceleration sensor 109 and the second acceleration sensor 1010 are both three-dimensional acceleration sensors; the data acquisition system 1 establishment process includes: the three-dimensional acceleration sensor in the data acquisition system 1 is set on the test tooling bench 407 and the pipeline support steel frame 402, the strain gauge 102, the mass flow meter 101, and the temperature sensor 108 are set according to the actual situation of the test pipeline model 405, Figure 5 and Figure 6 The arrangement of the test pipeline section 4 is an embodiment used for illustration in this application; the first acceleration sensor 109, the second acceleration sensor 1010, the strain gauge 102, the three-way strain gauge 107, the mass flow meter 101, and the temperature sensor 108 are all connected to the data acquisition instrument 105 by cable connection. Optionally, in the impact resistance test device for the hot power pipeline system according to the present application, the working fluid flow rate and pressure inside the test pipeline section 4 are adjusted and controlled by the variable frequency water supply device 3.

[0070] In a further embodiment of the present invention, according to another aspect of the present application, a method for impact resistance test of a hot power pipeline system is provided, using the above-mentioned impact resistance test device for a hot power pipeline system, and comprising the following steps in order:

[0071] Step 1: Install and arrange the test pipeline model 405, antifreeze and pressure-resistant water supply hose 403, antifreeze and pressure-resistant water return hose 404, pipeline fixtures 401, pipeline support steel frame 402, tooling stand 407, and impact test bench 4010 according to the design requirements. According to the design requirements, arrange the test pipeline section 4, circulating water tank 2, variable frequency water supply device 3 and data acquisition system 1, build the test system loop, and ensure normal operation during the test.

[0072] Step 2: Inject the working fluid into the circulating water tank body 207 through the water tank water inlet 201, open the integrated pipeline split flange ball valve 306, use the large flow variable frequency pipeline pump 301 to fill the entire test device, and then close the water inlet 201, and then use the large flow variable frequency pipeline pump 301 to slowly flow the fluid working fluid in the loop and start the PID temperature control heater 203, set the temperature to the visual temperature control box 206, and heat the working fluid in the circulating water tank 2. After the working fluid temperature reaches the set value, the electromagnetic flowmeter 304 and the imported shockproof pressure gauge monitor the flow rate and pressure of the working fluid in the test pipeline section 4 to ensure that the set working conditions are met.

[0073] Step 3: Start the data acquisition system 1 to collect data from the test device without impact. After the data curve is stable, start the impact test bench 4010 and set the impact load parameters of the impact test bench 4010, including the shock wave type, duration and load intensity, and perform the impact test of the power pipeline system until the impact load input is completed.

[0074] Step 4: During the loading test, the PID temperature control heater 203 maintains the working fluid temperature at the inlet of the test device at the set value, the variable frequency water supply device 3 adjusts the working fluid flow rate and pressure in the test pipeline section 4, and the impact test bench 4010 simulates the actual impact environment. The three work together to simulate the dynamic response process of the internal flow field of the power pipeline system and the external structural mechanical behavior characteristics under impact conditions.

[0075] In a further embodiment of the present invention, the impact test device for hot power pipeline system of the present application, due to the use of a large flow variable frequency pipeline pump 301 when pumping the working fluid inside the test pipeline, improves the controllability of the test device, can effectively cope with the flow rate and pressure requirements of the working fluid inside the test pipeline section 4 under different working conditions, improves the stability and accuracy of the control, and is monitored by an electromagnetic flowmeter 304, which significantly improves the reliability and safety of the test device system. At the same time, with the help of the data acquisition system 1 and the three-way acceleration sensor arranged in the test pipeline section 4 and the impact test bench 4010, the accurate collection of power pipeline system data considering the flow-heat-solid coupling effect under impact conditions is realized. The impact test device for hot power pipeline system of the present application has high practical value and can be widely used in the field of impact resistance of power pipeline equipment.

[0076] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0077] In a further embodiment of the present invention, in view of the fact that in the existing pipeline impact resistance test, the influence of the working fluid in the pipe is ignored, resulting in unclear flow-heat-solid coupling mechanism and difficult prediction of response characteristics in the impact resistance research of the power pipeline system. The present application provides an impact resistance test device for a hot power pipeline system, which can improve the controllability, safety and data acquisition accuracy of the impact resistance test of the power pipeline equipment.

[0078] In a further embodiment of the present invention, Figure 1 The structure diagram of the impact resistance test device for hot power pipeline system according to the embodiment of the present application is shown. Figure 1 As shown, the impact resistance test device for a hot power pipeline system of an embodiment of the present application includes a data acquisition system 1, a circulating water tank 2, a variable frequency water supply device 3, and a test pipeline section 4.

[0079] In a further embodiment of the present invention, the test device of the present application embodiment is constructed as follows:

[0080] The test pipeline section 4 is connected to the variable frequency water supply device 3 through an antifreeze and pressure-resistant water supply hose 403, and is connected to the circulating water tank 2 through an antifreeze and pressure-resistant water return hose 404; the data acquisition system 1 includes a strain gauge 102, a mass flow meter 101, and a temperature sensor 108, which are arranged on the test pipeline section 4 according to the actual situation of the test pipeline model 405, and are connected to the data acquisition instrument 105 through cables. The water inlet shockproof pressure gauge 104 is fixed to the inlet straight pipe section of the test pipeline model 405 by embedded welding to monitor the internal inlet pressure of the test pipeline model 405.

[0081] In a further embodiment of the present invention, Figure 2 The structural schematic diagram of the data acquisition system 1 in the impact test device for the hot power pipeline system according to the embodiment of the present application is shown; as shown in the figure, the strain gauge 102 is arranged at the bend of the test pipeline model 405 by gluing, and the water inlet shockproof pressure gauge 104 is fixed to the inlet straight pipe section of the test pipeline model 405 by embedded welding to monitor the internal inlet pressure of the test pipeline model 405. The three-way strain gauge 107 is arranged at the three-way pipe of the test pipeline model 405 by welding. The mass flow meter 101 is installed at the inlet straight pipe of the test pipeline model 405 through a flange, and the temperature sensor 108 is installed at the three-way pipe branch section at the outlet of the test pipeline model 405. The first acceleration sensor 109 and the second acceleration sensor 1010 are respectively installed on the pipeline support steel frame 402 and the impact test bench 4010. All sensors except the water inlet shockproof pressure gauge 104 are connected to the data acquisition instrument 105 through cables.

[0082] In a further embodiment of the present invention, Figure 3 A schematic structural diagram of a circulating water tank 2 for impact resistance testing of a hot power piping system according to an embodiment of the present application is shown; as shown in the figure, a water tank water inlet 201 is located at the top of a circulating water tank body 207 and is provided with a closing switch; a portable moving part 202 is installed at the top of the circulating water tank body 207 to move the circulating water tank 2; an axial thermometer 205, a visual temperature control box 206 and a PID temperature control heater 203 are rigidly fixed to the top of the circulating water tank body 207 by embedded welding; a first threaded connection port 204 and a first flange connection port 208 are fixed to the circulating water tank body 207 by welding.

[0083] In a further embodiment of the present invention, Figure 4A schematic structural diagram of a variable frequency water delivery device 3 for an impact resistance test of a hot power pipeline system according to an embodiment of the present application is shown; as shown in the figure, a large flow variable frequency pipeline pump 301 is equipped with a pipeline pump shockproof pressure gauge 302, and is fixed to the second flange connection port 303 by welding, and the large flow variable frequency pipeline pump 301, the integrated pipeline split flange ball valve 306, the electromagnetic flowmeter 304, and the second threaded connection port 305 are fixed in sequence by flange connection;

[0084] In a further embodiment of the present invention, Figure 5 A structural schematic diagram of a test pipeline section 4 without a pipeline anti-cold insulation layer 409 in an impact resistance test device for a hot power pipeline system according to an embodiment of the present application is shown; the pipeline fixing part 401 adopts a binding connection form to the test pipeline model 405, and the pipeline support steel frame 402 is fixed to the pipeline fixing part 401 by means of bolt connection; the antifreeze and pressure-resistant water supply hose 403 is connected to the test pipeline model 405 by means of threads, and the antifreeze and pressure-resistant return water hose 404 is connected to the return water pressure regulating valve 406 by means of threads, and the return water pressure regulating valve 406 is connected to the test pipeline model 405 by means of flange connection; the pipeline support steel frame 402 is fixed to the tooling stand 407 by means of bolt connection.

[0085] In a further embodiment of the present invention, Figure 6 A schematic diagram of the structure of a test pipeline section 4 in an impact test device for a hot power pipeline system according to an embodiment of the present application is shown; as shown in the figure, a tooling stand 407 and an impact test bench 4010 are fixed by fastening bolts 408, and a pipeline cold-proof insulation layer 409 is bound to a test pipeline model 405 by a plastic buckle to reduce heat loss during the test;

[0086] In a further embodiment of the present invention, Figure 7 FIG. 4 is a schematic cross-sectional view of a local structure of a test pipeline section 4 in an anti-impact test device for a hot power pipeline system according to an embodiment of the present application; Figure 7 Shown is a cross-sectional view of a test pipeline model 405 where any location is covered with a pipeline cold-proof and heat-insulating layer 409 .

[0087] In a further embodiment of the present invention, the impact test bench 4010 is used to simulate impact loads including but not limited to collision, explosion, tilt, swaying and waves, with a maximum load of 20t; thrust of 80kN; frequency range of 0-100Hz; number of degrees of freedom of 6. Any model of impact test bench that meets the above parameters can be used.

[0088] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An impact test device for hot power pipeline system, characterized in that: include: A data acquisition system (1), a circulating water tank (2), a variable frequency water supply device (3) and a test pipe section (4); The test pipeline section (4) comprises: an antifreeze and pressure-resistant water supply hose (403), an antifreeze and pressure-resistant water return hose (404), a test pipeline model (405) and a water return pressure regulating valve (406); the water supply port of the test pipeline model (405) is connected to the antifreeze and pressure-resistant water supply hose (403); the water return port of the test pipeline model (405) is connected to the antifreeze and pressure-resistant water return hose (404); the water return port of the test pipeline model (405) is provided with a water return pressure regulating valve (406); the water return port of the test pipeline model (405) is used to adjust the water return port pressure of the test pipeline model (405); and the test pipeline model (405) is provided with a plurality of straight pipe structures, a plurality of curved pipe structures and at least one three-way pipe structure; The variable frequency water supply device (3) is installed on the circulating water tank (2), the antifreeze and pressure-resistant water supply hose (403) is connected to the variable frequency water supply device (3), and the antifreeze and pressure-resistant water return hose (404) is connected to the circulating water tank (2); The data acquisition system (1) comprises: a strain gauge (102), a water inlet shockproof pressure gauge (104), a data acquisition instrument (105) and a three-dimensional strain gauge (107); the strain gauge (102), the water inlet shockproof pressure gauge (104) and the three-dimensional strain gauge (107) are all assembled on a test pipeline model (405); the strain gauge (102) is bonded to the elbow structure of the test pipeline model (405); the three-dimensional strain gauge (107) is bonded to the three-way pipe structure of the test pipeline model (405); a plurality of strain gauges (102) and a plurality of three-dimensional strain gauges (107) are respectively connected to the data acquisition instrument (105) via cables; the water inlet shockproof pressure gauge (104) is used to monitor the water supply port pressure of the test pipeline model (405).

2. The impact resistance test device for hot power pipeline system according to claim 1 is characterized in that: The circulating water tank (2) comprises: a circulating water tank body (207), the circulating water tank body (207) is provided with a first threaded connection port (204) and a first flange connection port (208), the first threaded connection port (204) and an antifreeze and pressure-resistant return water hose (404) are threadedly connected and communicated with each other; the variable frequency water supply device (3) comprises: a large flow variable frequency pipeline pump (301), the end of the water inlet pipeline of the large flow variable frequency pipeline pump (301) is provided with a second flange connection port (303), the end of the drainage pipeline of the large flow variable frequency pipeline pump (301) is provided with a second threaded connection port (305), the second threaded connection port (305) and the antifreeze and pressure-resistant water supply hose (403) are threadedly connected and communicated with each other; the first flange connection port (208) and the second flange connection port (303) are flange-connected and communicated with each other.

3. The impact resistance test device for hot power pipeline system according to claim 2 is characterized in that: The variable frequency water supply device (3) further comprises: a pipeline pump shockproof pressure gauge (302), an electromagnetic flowmeter (304) and an integrated pipeline split flange ball valve (306); the pipeline pump shockproof pressure gauge (302) is installed at the drain outlet of the large flow variable frequency pipeline pump (301); and the electromagnetic flowmeter (304) and the integrated pipeline split flange ball valve (306) are both installed on the drain pipe of the large flow variable frequency pipeline pump (301).

4. The impact resistance test device for hot power pipeline system according to claim 3 is characterized in that: The circulating water tank (2) further comprises: a water tank water inlet (201), a PID temperature control heater (203), an axial thermometer (205) and a visual temperature control box (206); the top of the circulating water tank body (207) is provided with an openable and closable water tank water inlet (201); the PID temperature control heater (203), the axial thermometer (205) and the visual temperature control box (206) are all installed on the top of the circulating water tank body (207).

5. The impact resistance test device for hot power pipeline system according to claim 4 is characterized in that: The test pipe section (4) further comprises: a tooling frame (407), fastening bolts (408) and an impact test bench (4010), wherein the tooling frame (407) is mounted on the upper surface of the impact test bench (4010) and connected via a plurality of fastening bolts (408); The test pipeline section (4) further comprises: pipeline fixing parts (401) and pipeline supporting steel frames (402), wherein a plurality of pipeline supporting steel frames (402) are installed on the upper surface of the tooling stand (407), and the plurality of pipeline supporting steel frames (402) are used to support the test pipeline model (405), and the plurality of pipeline supporting steel frames (402) and the test pipeline model (405) are connected via a plurality of pipeline fixing parts (401).

6. The impact resistance test device for hot power pipeline system according to claim 5, characterized in that: The data acquisition system (1) further comprises: at least one first acceleration sensor (109) and one second acceleration sensor (1010); one first acceleration sensor (109) is installed on any pipeline support steel frame (402); the second acceleration sensor (1010) is installed on the upper surface of the tooling stand (407); a plurality of first acceleration sensors (109) and second acceleration sensors (1010) are respectively connected to the data acquisition instrument (105) via cables; and the first acceleration sensor (109) and the second acceleration sensor (1010) are both three-axis acceleration sensors.

7. The impact resistance test device for hot power pipeline system according to claim 6 is characterized in that: The data acquisition system (1) further comprises: a mass flow meter (101), a pipe wall temperature sensor (103), a pressure sensor (106) and a temperature sensor (108); the mass flow meter (101), the pipe wall temperature sensor (103), the pressure sensor (106) and the temperature sensor (108) are all mounted on the test pipeline model (405); the mass flow meter (101), the pipe wall temperature sensor (103), the pressure sensor (106) and the temperature sensor (108) are all respectively connected to the data acquisition instrument (105) via cables.

8. The impact resistance test device for hot power pipeline system according to claim 1 is characterized in that: The test pipeline section (4) further comprises: a pipeline cold-proof and heat-insulating layer (409); the outer surface of the test pipeline model (405) is coated with the pipeline cold-proof and heat-insulating layer (409).

9. The impact resistance test device for hot power pipeline system according to claim 2, characterized in that: The circulating water tank (2) also includes: a portable movable member (202), wherein the portable movable member (202) is installed on the top of the circulating water tank body (207).

10. An impact test method for a hot power pipeline system, using the impact test device for a hot power pipeline system as claimed in any one of claims 7 to 9, characterized in that: The impact test method comprises the following steps in chronological order: Step 1: Install and arrange the test pipeline model (405), the antifreeze and pressure-resistant water supply hose (403), the antifreeze and pressure-resistant water return hose (404), the pipeline fixing parts (401), the pipeline support steel frame (402), the tooling stand (407), and the impact test bench (4010) according to the design requirements; arrange the test pipeline section (4), the circulating water tank (2), the variable frequency water supply device (3), and the data acquisition system (1) according to the design requirements, and construct the test system loop to ensure the normal operation during the test; Step 2: inject the working fluid into the circulating water tank body (207) through the water tank water inlet (201), open the integrated pipeline split flange ball valve (306), use the large flow variable frequency pipeline pump (301) to fill the entire test device, and then close the water inlet (201), and then use the large flow variable frequency pipeline pump (301) to make the fluid working fluid in the loop flow slowly and start the PID temperature control heater (203), set the temperature to the visual temperature control box (206), and heat the working fluid in the circulating water tank (2); after the working fluid temperature reaches the set value, monitor the flow rate and pressure of the working fluid in the test pipeline section (4) through the electromagnetic flowmeter (304) and the imported shockproof pressure gauge (103) to ensure that the set working conditions are met; Step 3: Start the data acquisition system (1) to collect data from the test device without impact; after the data curve is stable, start the impact test bench (4010) and set the impact load parameters of the impact test bench (4010), including the shock wave type, duration and load intensity, and perform the impact resistance test of the power pipeline system until the impact load input is completed; Step 4: During the loading test, the PID temperature control heater (203) maintains the working fluid temperature at the inlet of the test device at the set value, the variable frequency water supply device (3) adjusts the working fluid flow rate and pressure in the test pipeline section (4), and the impact test bench (4010) simulates the actual impact environment; the three work together to simulate the dynamic response process of the internal flow field and the external structural mechanical behavior characteristics of the power pipeline system under impact conditions.

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