Visual heat conductivity coefficient testing device

Abstract

The utility model relates to the technical field of petroleum non-metal composite pipe performance testing, in particular to an apparent heat conductivity coefficient testing device which comprises an iron surface operation table, a constant-temperature water bath control box, a non-metal composite pipe sample, a connecting assembly, a testing assembly and a supporting assembly. The sealing end cover is made of a high polymer material which is the same as that of an outer protective layer of the non-metal composite pipe sample, the sealing end cover is in hot melting connection with the non-metal composite pipe sample, and a through hole is reserved in one side of the sealing end cover; according to the utility model, the sealing end covers are made of the high polymer material which is the same as the material of the outer protective layer of the non-metal composite pipe sample, and the sealing end covers are firmly adhered to the two ports of the pipe through a hot melting technology, so that effective sealing is realized; according to the method, the adverse effect on temperature control when a traditional metal sealing plate is combined with a high polymer material is remarkably reduced, and the accuracy of a test result is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of performance testing of petroleum non-metallic composite pipes, in particular to an apparent thermal conductivity testing device. Background Art

[0002] In oilfield applications, the thermal insulation performance of pipelines is of great importance. Oilfield operations involve the transmission of large amounts of high-temperature or low-temperature fluids. Pipeline insulation has become a key link in ensuring production continuity and safety. Accurate pipeline apparent thermal conductivity testing can not only accurately evaluate the thermal insulation performance of pipelines, reducing unnecessary energy consumption and cost expenditures for oilfields and promoting green development in the industry, but also help technicians identify potential problems in pipeline insulation systems.

[0003] Currently, the apparent thermal conductivity test devices on the market are all for metal pipes. For non-metallic composite pipes, due to the anisotropy between the composite materials, there is no relevant device specifically for the actual whole pipe test;

[0004] Therefore, the above-mentioned apparent thermal conductivity test devices currently on the market are all aimed at metal pipes. For non-metallic composite pipes, due to the anisotropy between composite materials, there are no relevant devices specifically used for physical whole pipe testing. An apparent thermal conductivity test device can be designed. The sealing end caps are made of the same polymer material as the outer protective layer of the non-metallic composite pipe sample, and the sealing end caps are firmly bonded to the two ends of the non-metallic composite pipe sample through hot melt technology to achieve effective sealing. This can effectively reduce the adverse effects of traditional metal sealing plates on temperature control when combined with polymer materials, thereby ensuring the accuracy of the test results. Utility Model Content

[0005] In order to overcome the problem that the apparent thermal conductivity coefficient testing devices currently on the market are all aimed at metal pipes, for non-metallic composite pipes, due to the anisotropy between the composite materials, there is no relevant device specifically for physical whole pipe testing.

[0006] The technical solution of the utility model is: a device for testing apparent thermal conductivity, comprising an iron-surface operating table, a constant temperature water bath control box, a non-metallic composite pipe sample, a connecting assembly, a testing assembly and a supporting assembly, the constant temperature water bath control box being arranged above the iron-surface operating table, the supporting assembly being arranged above the iron-surface operating table, four groups of supporting assemblies being arranged, the supporting assembly being located on one side of the constant temperature water bath control box, the non-metallic composite pipe sample being arranged above the supporting assembly, the connecting assembly being arranged between the non-metallic composite pipe sample and the constant temperature water bath control box, the testing assembly being arranged on the periphery of the non-metallic composite pipe sample, sealing end covers being provided at both ends of the non-metallic composite pipe sample, the sealing end covers being made of the same polymer material as the outer protective layer of the non-metallic composite pipe sample, the sealing end covers being hot-melt connected to the non-metallic composite pipe sample, and a through hole being reserved on one side of the sealing end covers.

[0007] Preferably, the non-metallic composite pipe sample is supported and fixed by setting a support component, the constant temperature water bath control box and the non-metallic composite pipe sample can be connected by setting a connecting component, and the port of the non-metallic composite pipe sample can be sealed by setting a sealing end cover and fixing it at the port of the non-metallic composite pipe sample in a hot-melt manner, thereby effectively reducing the adverse effects of the traditional metal sealing plate on temperature control when combined with the polymer material, ensuring the accuracy of the test results, and arranging a through hole to facilitate the through connection between the connecting component and the non-metallic composite pipe sample, and setting a test component to collect test data.

[0008] Preferably, a touch screen display is fixedly mounted on one side of the constant temperature water bath control box.

[0009] Preferably, a vacuum gauge is provided on one side of the constant temperature water bath control box, a vacuum valve is provided on one side of the constant temperature water bath control box, a vacuum pump is provided above the iron surface operating table, and the vacuum pump is connected to the constant temperature water bath control box through the vacuum valve.

[0010] Preferably, the connecting assembly includes an injection pipe and an outlet pipe, one end of the injection pipe passes through the sealed end cover, the injection pipe is connected to the non-metallic composite pipe sample by a through-hole, the other end of the injection pipe is connected to the constant temperature water bath control box, the outlet pipe passes through another set of sealed end covers through the through hole, the outlet pipe is connected to the non-metallic composite pipe sample by a through-hole, and the other end of the outlet pipe is connected to the constant temperature water bath control box.

[0011] Preferably, the test component includes a control computer and an electronic sensing chip. The control computer is arranged above the iron surface operating table, and the electronic sensing chip is attached to the periphery of the non-metallic composite pipe sample. There are multiple groups of electronic sensing chips.

[0012] Preferably, the support assembly includes a magnetic plate, a mounting plate, a support column, a fixed clamp and a movable clamp. The magnetic plate is arranged above the iron surface operating table, the magnetic plate is magnetically connected to the iron surface operating table, the mounting plate is fixedly installed above the magnetic plate, the support column is fixedly installed above the mounting plate, the fixed clamp is fixedly installed above the support column, the movable clamp is arranged above the fixed clamp, and the non-metallic composite pipe sample is located between the fixed clamp and the movable clamp.

[0013] Preferably, the support assembly includes a slide groove, an internal threaded slider and a threaded rod. A slide groove is opened above the fixed clamp, the internal threaded slider is arranged inside the slide groove, the internal threaded slider is slidingly connected to the fixed clamp through the slide groove, the internal threaded slider is located below the movable clamp, the internal threaded slider is fixedly connected to the movable clamp, the threaded rod passes through the internal threaded slider and the fixed clamp, the threaded rod encounters the fixed clamp and is rotated and connected, and the threaded rod is threadedly connected to the internal threaded slider.

[0014] Beneficial effects of the utility model:

[0015] 1. Compared with the apparent thermal conductivity test devices currently on the market, which are all aimed at metal pipes, there are no related devices specifically used for physical whole pipe testing for non-metallic composite pipes due to the anisotropy between the composite materials. The utility model adopts a sealing end cover made of the same polymer material as the outer protective layer of the non-metallic composite pipe sample, and firmly bonds the sealing end cover to the two ends of the pipe through hot melt technology, thereby achieving effective sealing. This method significantly reduces the adverse effects of the traditional metal sealing plate on temperature control when combined with the polymer material, ensuring the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the first three-dimensional structure of the apparent thermal conductivity testing device of the present invention;

[0017] Figure 2 Shown is a schematic diagram of the explosion three-dimensional structure at the port of the non-metallic composite pipe sample of the apparent thermal conductivity test device of the present invention;

[0018] Figure 3 Shown is a schematic diagram of the three-dimensional structure of the support assembly of the apparent thermal conductivity test device of the present invention;

[0019] Figure 4 Shown is a second three-dimensional structural schematic diagram of the apparent thermal conductivity testing device of the present invention;

[0020] Explanation of the accompanying symbols: 1. Iron-surface operating table; 2. Constant temperature water bath control box; 201. Touch screen; 3. Non-metallic composite pipe sample; 301. Sealing end cover; 302. Through hole; 401. Vacuum valve; 402. Vacuum pump; 403. Vacuum gauge; 501. Water injection pipe; 502. Water outlet pipe; 601. Control computer; 602. Electronic sensing chip; 701. Magnetic plate; 702. Mounting plate; 703. Support column; 704. Fixed clamp; 705. Movable clamp; 706. Slide groove; 707. Internal thread slider; 708. Threaded rod. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See also Figures 1-4 The utility model provides an embodiment: a device for testing apparent thermal conductivity, comprising an iron surface operating table 1, a constant temperature water bath control box 2, a non-metallic composite pipe sample 3, a connecting assembly, a testing assembly and a supporting assembly. The constant temperature water bath control box 2 is arranged above the iron surface operating table 1, and the supporting assembly is arranged above the iron surface operating table 1. Four groups of supporting assemblies are provided, and the supporting assembly is located on one side of the constant temperature water bath control box 2. The non-metallic composite pipe sample 3 is arranged above the supporting assembly. The connecting assembly is arranged between the non-metallic composite pipe sample 3 and the constant temperature water bath control box 2. The testing assembly is arranged on the periphery of the non-metallic composite pipe sample 3. Sealing end caps 301 are provided at both ends of the non-metallic composite pipe sample 3. The sealing end caps 301 are made of the same material as the outer protective layer of the non-metallic composite pipe sample 3. Made of polymer material, the sealing end cap 301 is hot-melt connected to the non-metallic composite tube sample 3, and a through hole 302 is reserved on one side of the sealing end cap 301; the non-metallic composite tube sample 3 is supported and fixed by setting a supporting component, and the constant temperature water bath control box 2 and the non-metallic composite tube sample 3 can be connected by setting a connecting component, and the sealing end cap 301 is fixed at the port of the non-metallic composite tube sample 3 by hot-melt, so that the port of the non-metallic composite tube sample 3 can be sealed, effectively reducing the adverse effects of the traditional metal sealing plate on temperature control when combined with the polymer material, ensuring the accuracy of the test results, and arranging the through hole 302 to facilitate the through connection between the connecting component and the non-metallic composite tube sample 3, and the test data can be collected by setting the test component.

[0023] See also Figure 1-Figure 2In this embodiment, a touch screen display 201 is fixedly installed on one side of the constant temperature water bath control box 2; the touch screen display 201 can be used to control the temperature of the fluid medium stored inside the constant temperature water bath control box 2; a vacuum gauge 403 is provided on one side of the constant temperature water bath control box 2, and a vacuum valve 401 is provided on one side of the constant temperature water bath control box 2. A vacuum pump 402 is provided above the iron surface operating table 1, and the vacuum pump 402 is connected to the constant temperature water bath control box 2 through the vacuum valve 401; by setting a control pump, the fluid medium inside the constant temperature water bath control box 2 can be controlled through the control valve, and by setting a vacuum gauge 403, it is convenient to pass through the pressure data inside the constant temperature water bath control box 2; the connection component package It includes a water injection pipe 501 and a water outlet pipe 502. One end of the water injection pipe 501 passes through the sealing end cover 301, the water injection pipe 501 is connected to the non-metallic composite pipe sample 3 through a through connection, and the other end of the water injection pipe 501 is connected to the constant temperature water bath control box 2 through a through connection. The water outlet pipe 502 passes through another set of sealing end covers 301 through the through hole 302, the water outlet pipe 502 is connected to the non-metallic composite pipe sample 3 through a through connection, and the other end of the water outlet pipe 502 is connected to the constant temperature water bath control box 2 through a through connection; the water injection pipe 501 is provided to transport the fluid medium output from the constant temperature water bath control box 2 to the inside of the non-metallic composite pipe sample 3, and the water outlet pipe 502 is provided to transport the fluid medium passing through the non-metallic composite pipe sample 3 back to the inside of the constant temperature water bath control box 2.

[0024] See also Figure 3-Figure 4In this embodiment, the test assembly includes a control computer 601 and an electronic sensing chip 602. The control computer 601 is arranged above the iron surface operating table 1. The electronic sensing chip 602 is attached to the periphery of the non-metallic composite pipe sample 3. There are multiple sets of electronic sensing chips 602. The temperature data of the fluid medium in the non-metallic composite pipe sample 3 is collected by setting the electronic sensing chip 602, and the collected data is analyzed by setting the control computer 601. The support assembly includes a magnetic plate 701, a mounting plate 702, a support column 703, a fixed clamping platform 704 and a movable clamp 705. The magnetic plate 701 It is arranged above the iron surface operating table 1, the magnetic plate 701 is magnetically connected to the iron surface operating table 1, the mounting plate 702 is fixedly installed above the magnetic plate 701, the support column 703 is fixedly installed above the mounting plate 702, the fixed clamping platform 704 is fixedly installed above the support column 703, the movable clamp 705 is arranged above the fixed clamping platform 704, and the non-metallic composite pipe sample 3 is located between the fixed clamping platform 704 and the movable clamp 705; by setting the magnetic plate 701, the entire support assembly can be fixed above the iron surface operating table 1, and the support assembly can be moved according to the situation of the non-metallic composite pipe sample 3. By setting the mounting plate The plate 702 is used to install the support column 703, and the fixed clamping platform 704 is installed by setting the support column 703. The non-metallic composite pipe sample 3 is clamped and fixed by setting the fixed clamping platform 704 to cooperate with the movable clamp 705; the support component includes a slide groove 706, an internal thread slider 707 and a threaded rod 708. A slide groove 706 is provided above the fixed clamping platform 704, and the internal thread slider 707 is arranged inside the slide groove 706. The internal thread slider 707 is slidably connected to the fixed clamping platform 704 through the slide groove 706. The internal thread slider 707 is located below the movable clamp 705. The internal thread slider 707 is connected to the movable clamp 705. The movable clamp 705 is fixedly connected, the threaded rod 708 passes through the internal threaded slider 707 and the fixed clamping platform 704, the threaded rod 708 encounters the fixed clamping platform 704 and is rotated and connected, and the threaded rod 708 is threadedly connected to the internal threaded slider 707; the internal threaded slider 707 is installed by setting the sliding groove 706, and by setting the threaded rod 708 to rotate, the internal threaded slider 707 can be driven to slide in the sliding groove 706, thereby driving the movable clamp 705 installed above the internal threaded slider 707 to move, and the distance between the movable clamp 705 and the fixed clamping platform 704 can be adjusted to adapt to non-metallic composite pipe samples 3 of different sizes.

[0025] During operation, the sealing end caps 301 are placed on both end ports of the non-metallic composite pipe sample 3, and the sealing end caps 301 are connected to the non-metallic composite pipe sample 3 by hot-melt technology to ensure good sealing performance;

[0026] According to the size of the non-metallic composite pipe sample 3, hold the support column 703, use the magnetic plate 701 to adsorb the mounting plate 702 to the appropriate position on the iron surface operating table 1, place the non-metallic composite pipe sample 3 sealed with the sealing end cover 301 on top of the four sets of fixed clamps 704, and use the threaded rod 708 to rotate and drive the internal thread slider 707 to slide, so that the movable clamp 705 cooperates with the fixed clamp 704 to clamp and fix the placed non-metallic composite pipe sample 3;

[0027] Insert the water injection pipe 501 and the water outlet pipe 502 into the two ends of the non-metallic composite pipe sample 3 through the through hole 302, input the test temperature of the constant temperature water bath control box 2 using the touch screen 201, open the vacuum valve 401, and use the vacuum pump 402 to inject the fluid medium inside the constant temperature water bath control box 2 into the non-metallic composite pipe sample 3 through the water injection pipe 501, and transport it back to the constant temperature water bath control box 2 through the water outlet pipe 502, and repeat this cycle and keep it constant;

[0028] After the internal and external temperatures of the non-metallic composite tube sample 3 are constant, the electronic sensing chip 602 is evenly laid on the outer surface of the test non-metallic composite tube sample 3, and the electronic sensing chip 602 is used to collect data. The collection frequency is input through the control computer 601 and the collected data is saved.

[0029] Through the above steps, by using a sealing end cap 301 made of the same polymer material as the outer protective layer of the non-metallic composite pipe sample 3, and firmly bonding the sealing end cap 301 to the two ends of the pipe through hot melt technology, effective sealing is achieved; this method significantly reduces the adverse effects of the traditional metal sealing plate on temperature control when combined with the polymer material, ensuring the accuracy of the test results, so as to solve the problem that the apparent thermal conductivity coefficient test devices currently on the market are all for metal pipes. For non-metallic composite pipes, due to the anisotropy between the composite materials, there are no related devices specifically used for physical whole pipe testing.

[0030] Example 1

[0031] Optionally, a plan is set to produce a polymer composite pipe for transporting high-temperature or low-temperature fluid media. To ensure the safety and efficiency of the pipe, it is necessary to accurately measure the thermal conductivity of the material at different temperatures. This apparent thermal conductivity test device is used for testing.

[0032] When preparing for the test, first confirm that the constant temperature water bath control box 2, touch screen 201, vacuum gauge 403, vacuum valve 401, vacuum pump 402, control computer 601, electronic sensor chip 602, support assembly and other components are all installed intact and in normal working condition; check the non-metallic composite pipe sample 3 PVDF pipe with a diameter of 100 mm and a length of 1 m. The appearance is intact and the ends are flat; according to the pipe size, prepare two sealing end caps 301 with the same PVDF material as the outer protective layer of the pipe; use hot melt technology to firmly install the sealing end caps 301 at both ends of the pipe to ensure that there is no leakage; place the test device on a stable workbench to ensure that there is no vibration and strong electromagnetic interference; preheat the constant temperature water bath control box 2 to the preset temperature range of 50℃ to 90℃.

[0033] Example 2

[0034] Optionally, the apparent thermal conductivity test device is selected for testing. When installing the support assembly, the magnetic plate 701 of the support assembly is adsorbed on the appropriate position of the iron surface operating table 1, and the support column 703 and the fixed clamping platform 704 are adjusted so that they can stably clamp the non-metallic composite pipe sample 3. The threaded rod 708 is used to adjust the movable clamp 705 to ensure that the non-metallic composite pipe sample 3 is firmly clamped;

[0035] When connecting the fluid circulation system, insert one end of the water injection pipe 501 into the through hole 302 reserved in the sealing end cover 301 at one end of the non-metallic composite pipe sample 3, and ensure a good seal. Insert the other end of the water outlet pipe 502 into the through hole 302 of the sealing end cover 301 at the other end, and also ensure a seal. Open the vacuum valve 401, start the vacuum pump 402, remove the air in the pipeline, and ensure that the fluid medium can circulate smoothly.

[0036] Example 3

[0037] Optionally, the apparent thermal conductivity test device is selected for testing. When performing the setting test, the target temperature of the constant temperature water bath control box 2 is set to 70°C through the touch display screen 201; the working parameters of the vacuum pump 402 are set to ensure that the required vacuum degree is reached and maintained inside the constant temperature water bath control box 2.

[0038] When collecting data, the electronic sensing chip 602 is evenly applied to the outer surface of the non-metallic composite pipe sample 3 to ensure full coverage and accurate temperature measurement; the control computer 601 is started and the data collection frequency is set to once per second; it takes about 30 minutes to 1 hour for the internal and external temperatures of the non-metallic composite pipe sample 3 to reach a stable state, depending on the material and thickness of the pipe.

[0039] During data analysis, the control computer 601 is used to analyze the collected temperature data and calculate the temperature gradient of the non-metallic composite tube sample 3 at different time points; based on Fourier's law or other applicable thermal conductivity theories, the thermal conductivity coefficient of the non-metallic composite tube sample 3 is calculated and obtained.

[0040] When recording the results, record the test results, including key parameters such as test temperature, pressure, time, thermal conductivity, etc.; clean and maintain the test equipment and prepare for the next test.

[0041] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. An apparent thermal conductivity testing device comprising an iron surface operating table (1), a constant temperature water bath control box (2) and a non-metallic composite pipe sample (3); characterized in that: The invention also includes a connection component, a test component and a support component. The constant temperature water bath control box (2) is arranged above the iron surface operating table (1). The support component is arranged above the iron surface operating table (1). Four groups of support components are provided. The support component is located on one side of the constant temperature water bath control box (2). The non-metallic composite pipe sample (3) is arranged above the support component. The connection component is arranged between the non-metallic composite pipe sample (3) and the constant temperature water bath control box (2). The test component is arranged on the periphery of the non-metallic composite pipe sample (3). Both ends of the non-metallic composite pipe sample (3) are provided with sealing end caps (301). The sealing end caps (301) are made of the same polymer material as the outer protective layer of the non-metallic composite pipe sample (3). The sealing end caps (301) are connected to the non-metallic composite pipe sample (3) by hot melt. A through hole (302) is reserved on one side of the sealing end caps (301).

2. The apparent thermal conductivity testing device according to claim 1, characterized in that: A touch screen display (201) is fixedly mounted on one side of the constant temperature water bath control box (2).

3. The apparent thermal conductivity testing device according to claim 1, characterized in that: A vacuum gauge (403) is provided on one side of the constant temperature water bath control box (2), a vacuum valve (401) is provided on one side of the constant temperature water bath control box (2), a vacuum pump (402) is provided above the iron surface operating table (1), and the vacuum pump (402) is connected to the constant temperature water bath control box (2) through the vacuum valve (401).

4. The apparent thermal conductivity testing device according to claim 1, characterized in that: The connection assembly includes a water injection pipe (501) and a water outlet pipe (502). One end of the water injection pipe (501) passes through the sealing end cover (301), the water injection pipe (501) is connected to the non-metallic composite pipe sample (3) through a through-hole, the other end of the water injection pipe (501) is connected to the constant temperature water bath control box (2), the water outlet pipe (502) passes through another set of sealing end covers (301) through a through hole (302), the water outlet pipe (502) is connected to the non-metallic composite pipe sample (3) through a through-hole, and the other end of the water outlet pipe (502) is connected to the constant temperature water bath control box (2).

5. The apparent thermal conductivity testing device according to claim 1, characterized in that: The test assembly includes a control computer (601) and an electronic sensing chip (602). The control computer (601) is arranged above the iron surface operating table (1). The electronic sensing chip (602) is attached to the periphery of the non-metallic composite pipe sample (3). The electronic sensing chip (602) is provided in multiple groups.

6. The apparent thermal conductivity testing device according to claim 1, characterized in that: The supporting assembly comprises a magnetic plate (701), a mounting plate (702), a supporting column (703), a fixed clamping platform (704) and a movable clamp (705); the magnetic plate (701) is arranged above the iron surface operating platform (1); the magnetic plate (701) is magnetically connected to the iron surface operating platform (1); the mounting plate (702) is fixedly mounted above the magnetic plate (701); the supporting column (703) is fixedly mounted above the mounting plate (702); the fixed clamping platform (704) is fixedly mounted above the supporting column (703); the movable clamp (705) is arranged above the fixed clamping platform (704); and the non-metallic composite pipe sample (3) is located between the fixed clamping platform (704) and the movable clamp (705).

7. The apparent thermal conductivity testing device according to claim 6, characterized in that: The support assembly includes a slide groove (706), an internal thread slider (707) and a threaded rod (708). A slide groove (706) is provided above the fixed clamping platform (704). The internal thread slider (707) is arranged inside the slide groove (706). The internal thread slider (707) is slidably connected to the fixed clamping platform (704) through the slide groove (706). The internal thread slider (707) is located below the movable clamp (705). The internal thread slider (707) is fixedly connected to the movable clamp (705). The threaded rod (708) passes through the internal thread slider (707) and the fixed clamping platform (704). The threaded rod (708) is rotatably connected to the fixed clamping platform (704). The threaded rod (708) is threadedly connected to the internal thread slider (707).

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