A device for testing the heat insulation effect of a pipeline

Abstract

The application relates to the technical field of pipeline heat preservation testing, in particular to a pipeline heat preservation effect testing device, which comprises a base, a test pipe is arranged above the base, one end of the test pipe is installed on the base through a vertical plate one, a vertical plate two is arranged on the base at the other end of the test pipe, a cover plate is arranged on the vertical plate two, and an air inlet pipe is installed at one end of the test pipe. The bidirectional screw rod of the clamping assembly can adjust the clamping plate, different pipeline diameters can be stably fixed, the cover plate cooperates with a sealing gasket, effective sealing can be formed at two ends of the pipeline, and leakage of a test medium is avoided; the design of the air jet head and the spiral plate ensures that the gas flows along a specified direction, stable transmission of the test medium is guaranteed, the accuracy and reliability of data during pipeline testing of different specifications are improved, the testing requirements of different pipeline diameters are met, and the problem of poor sealing of the existing device when the pipeline size is larger than the test pipe is solved.

Description

Technical Field

[0001] This application relates to the technical field of pipeline insulation testing, and in particular to a pipeline insulation effect testing device. Background Technology

[0002] In heating, chemical, and energy transmission fields, pipelines are key components for media transmission, and their insulation performance directly affects energy consumption, transmission efficiency, and system safety. Therefore, accurate testing of pipeline insulation effectiveness is crucial. To ensure the rationality of pipeline insulation materials and structural design, specialized testing equipment is needed to simulate actual working conditions and evaluate insulation performance by detecting parameters such as temperature changes.

[0003] A search revealed that Chinese Patent Publication No. CN217156375U discloses a testing device for detecting the thermal insulation effect of pipelines. By setting up a base plate, a support plate, and a test tube, the device facilitates the mixing of liquid in the test tube, ensuring that the temperature of different parts of the liquid remains consistent for temperature measurement, thus avoiding errors caused by inconsistent temperatures in different parts.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: Existing testing devices are generally difficult to adapt to the testing needs of pipes with different diameters and materials. When the inner diameter of the pipe to be tested does not match that of the test tube, especially when the pipe size is larger than the test tube, it is difficult to form an effective seal, which can easily lead to leakage of the test medium and affect the accuracy of the test data. Utility Model Content

[0005] To meet the testing needs of pipes with different diameters and to solve the problem of poor sealing in existing devices when the pipe size is larger than the test pipe, this application provides a pipe insulation effect testing device.

[0006] This application provides a pipe insulation effect testing device, which adopts the following technical solution: it includes a base, a test tube is arranged on the top of the base, one end of the test tube is installed on the base through a vertical plate, the other end of the test tube is arranged on the base with a vertical plate, a cover plate is arranged on the vertical plate, an air inlet pipe is installed on one end of the test tube, an air outlet pipe is installed on the vertical plate on one side of the air inlet pipe, an air jet head is arranged on the test tube, and a clamping assembly is arranged on the outside of the test tube.

[0007] Optionally, the jet head is disposed at the end of the test tube away from the vertical plate, the test tube is provided with a groove, the jet head is hidden inside the groove, and multiple jet heads are provided, which are evenly distributed.

[0008] Optionally, a spiral plate is fitted onto the test tube, and sleeves are installed at both ends of the spiral plate. The sleeves are slidably disposed with respect to the test tube, and one of the sleeves is provided with a protruding plate, which is slidably disposed with respect to the groove.

[0009] Optionally, a sealing gasket is provided on the side of the cover plate and the vertical plate one that are close to each other, one end of the cover plate is rotatably connected to the vertical plate two, and a buckle is provided between the other end of the cover plate and the vertical plate two, and the air outlet pipe passes through the corresponding sealing gasket.

[0010] Optionally, the clamping assembly includes a support plate, which is vertically arranged. One end of the support plate is mounted on the base. Two clamping plates are symmetrically arranged on the support plate and are slidably disposed with respect to the support plate. A bidirectional threaded rod is rotatably mounted on the support plate and is threadedly connected to the clamping plate. One end of the bidirectional threaded rod is provided with a drive source.

[0011] Optionally, the upper end of the support plate is fixedly connected to the first vertical plate and the second vertical plate via a horizontal plate, and a "V" shaped groove is provided on the side of the two clamping plates that are close to each other, and a rubber pad is provided on the inner wall of the "V" shaped groove.

[0012] Optionally, solenoid valves are provided on the air outlet pipe, the jet head, and the air inlet pipe; a controller is installed on the vertical plate; and temperature sensors are installed on the spiral plate and the inner wall of the sleeve.

[0013] In summary, this application includes the following beneficial technical effects: 1. This utility model uses a bidirectional threaded rod of the clamping assembly to adjust the clamping plate, which can stably fix pipes of different diameters; the cover plate and sealing gasket cooperate to form an effective seal at both ends of the pipe, preventing leakage of the test medium; the design of the jet head and spiral plate ensures that the gas flows in the specified direction, ensuring stable transmission of the test medium, improving the accuracy and reliability of data when testing pipes of different specifications, adapting to the testing needs of pipes of different diameters, and solving the problem of poor sealing in existing devices when the pipe size is larger than the test pipe.

[0014] 2. This utility model guides the orderly flow of gas through a spiral plate, avoiding interference from turbulent flow in temperature detection; a temperature sensor monitors temperature changes in real time, and a solenoid valve, in conjunction with a controller, precisely regulates the medium flow rate; the V-groove of the clamping plate and the rubber pad enhance pipe fixation and reduce the impact of shaking; it effectively simulates actual working conditions, providing more accurate parameters for evaluating the thermal insulation performance of the pipeline, and assisting in the rationality verification of the design of thermal insulation materials and structures. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application; Figure 2 This is a schematic diagram of the rear structure in an embodiment of this application; Figure 3 This is a schematic diagram of the test tube and spiral plate structure in an embodiment of this application; Figure 4 This is a partial cross-sectional view of the test tube in an embodiment of this application.

[0016] Reference numerals in the attached diagram: 1. Base; 2. Vertical plate one; 3. Vertical plate two; 4. Test tube; 5. Air inlet pipe; 6. Groove; 7. Jet nozzle; 8. Spiral plate; 9. Sleeve; 10. Protruding plate; 11. Sealing gasket; 12. Air outlet pipe; 13. Cover plate; 14. Support plate; 15. Clamping plate; 16. Bidirectional threaded rod; 17. Drive source. Detailed Implementation

[0017] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0018] This application discloses a device for testing the thermal insulation effect of pipelines. For example... Figure 1 , Figure 2 As shown, it includes a base 1, and a test tube 4 is set on the top of the base 1. The test tube 4 is made of 316L stainless steel and has a ceramic coating on the inner wall. One end of the test tube 4 is installed on the base 1 through a vertical plate 2. The other end of the test tube 4 is set on the base 1 with a vertical plate 3. A cover plate 13 is set on the vertical plate 3. A sealing gasket 11 is set on the side of the cover plate 13 that is close to the vertical plate 2.

[0019] See Figure 1 , Figure 2 As shown, one end of the cover plate 13 is rotatably connected to the vertical plate 2 3, and the other end of the cover plate 13 is provided with a buckle between it and the vertical plate 2 3. The air outlet pipe 12 passes through the corresponding sealing gasket 11, which is made of silicone rubber. A metal bellows compensator is installed at the contact point between the cover plate 13 and the vertical plate 2 3 to compensate for the displacement caused by the thermal expansion of the pipeline and ensure dynamic sealing performance. One end of the test pipe 4 is equipped with an air inlet pipe 5, and the air outlet pipe 12 is installed on the vertical plate 2 on one side of the air inlet pipe 5.

[0020] See Figure 3 , Figure 4 As shown, the test tube 4 is equipped with a jet nozzle 7, which is made of 304 stainless steel with laser drilling. The jet nozzle 7 is located at the end of the test tube 4 away from the vertical plate 2. The test tube 4 is provided with a groove 6, and the jet nozzle 7 is hidden inside the groove 6. There are multiple jet nozzles 7, which are evenly distributed. The test tube 4 is fitted with a spiral plate 8, which is made of polyetheretherketone injection molding.

[0021] See Figure 2 , Figure 3As shown, sleeves 9 are installed at both ends of the spiral plate 8. The sleeves 9 are slidably disposed with the test tube 4. One of the sleeves 9 is provided with a protruding plate 10, which is slidably disposed with the groove 6. Solenoid valves are provided on the air outlet pipe 12, the jet nozzle 7 and the air inlet pipe 5. A controller is installed on the vertical plate 2. The controller adopts an industrial-grade PLC. Temperature sensors are installed on the inner walls of the spiral plate 8 and the sleeves 9.

[0022] See Figure 1 , Figure 2 As shown, a clamping assembly is provided on the outside of the test tube 4. The clamping assembly includes a support plate 14, which is vertically arranged. One end of the support plate 14 is mounted on the base 1. Two clamping plates 15 are symmetrically arranged on the support plate 14. The two clamping plates 15 are slidably arranged with the support plate 14. The upper end of the support plate 14 is fixedly connected to the vertical plate 2 and the vertical plate 3 through a horizontal plate. A "V" shaped groove is provided on the side of the two clamping plates 15 that are close to each other. A rubber pad is provided on the inner wall of the "V" shaped groove.

[0023] See Figure 1 , Figure 2 As shown, a bidirectional threaded rod 16 is rotatably mounted on the support plate 14. The bidirectional threaded rod 16 is threadedly connected to the clamping plate 15. One end of the bidirectional threaded rod 16 is provided with a drive source 17. For the drive source 17, such as the geared motor commonly found in the market, the specific structure and working principle are not described in detail or limited here.

[0024] The implementation principle of the pipe insulation effect testing device in this application embodiment is as follows: First, prepare according to the specifications of the pipe to be tested: open the cover plate 13, pass the pipe through the vertical plate 2 3, and when the inner diameter of the pipe to be tested matches the test tube 4, directly put the pipe on the outside of the test tube 4; when the test starts, open the solenoid valve of the air inlet pipe 5 through the controller, the test gas enters the test tube 4 through the air inlet pipe 5, and transfers heat to the test tube 4 to realize the test of the pipe; When the pipe to be tested is larger than the test pipe 4, the drive source 17 is started to drive the bidirectional threaded rod 16 to rotate, so that the two clamping plates 15 slide along the support plate 14. The "V" groove on the clamping plate 15 and the rubber pad are used to tightly fit the outer wall of the pipe, so as to achieve stable fixation of pipes of different diameters and avoid pipe shaking during the test. Then, the spiral plate 8 is installed between the pipe and the test pipe 4, and the convex plate 10 slides into the groove 6 to ensure the stable position of the spiral plate 8 and provide a guiding path for gas flow. Then, the cover plate 13 is rotated to fit against the other end of the pipe and the cover plate 13 is fixed by the buckle. At this time, the cover plate 13 and the sealing gasket 11 on the vertical plate 2 are in close contact with both ends of the pipe to form an effective seal and prevent the test medium from leaking. At the start of the test, the solenoid valves of the inlet pipe 5 and the jet head 7 are opened by the controller. The test gas enters the test pipe 4 through the inlet pipe 5, and then enters the space between the pipe and the test pipe 4 through the jet head 7. Under the guidance of the spiral plate 8, the gas flows in an orderly manner in a specified direction to avoid turbulence interference, and finally is discharged through the outlet pipe 12. The solenoid valve on the outlet pipe 12 works with the controller to precisely regulate the gas flow rate to simulate the medium transmission state under actual working conditions. During the test, the temperature sensors on the inner walls of the spiral plate 8 and sleeve 9 monitor the gas temperature changes in real time and transmit the data to the controller to record the temperature parameters in real time. After the test, all solenoid valves are closed, the buckles of the cover plate 13 and the bidirectional threaded rod 16 of the clamping assembly are released, the pipe is taken out, and the pipe insulation effect test is completed.

[0025] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for testing the thermal insulation effect of pipelines, comprising a base (1), characterized in that: A test tube (4) is provided above the base (1). One end of the test tube (4) is installed on the base (1) via a vertical plate (2). A vertical plate (3) is provided on the base (1) at the other end of the test tube (4). A cover plate (13) is provided on the vertical plate (3). An air inlet pipe (5) is installed at one end of the test tube (4). An air outlet pipe (12) is installed on the vertical plate (2) on one side of the air inlet pipe (5). A jet nozzle (7) is provided on the test tube (4). A clamping assembly is provided on the outside of the test tube (4).

2. The pipe insulation effect testing device according to claim 1, characterized in that: The jet head (7) is located at one end of the test tube (4) away from the vertical plate (2). The test tube (4) is provided with a groove (6). The jet head (7) is hidden inside the groove (6). Multiple jet heads (7) are provided and are evenly distributed.

3. The pipe insulation effect testing device according to claim 2, characterized in that: The test tube (4) is fitted with a spiral plate (8), and sleeves (9) are installed at both ends of the spiral plate (8). The sleeves (9) are slidably disposed with the test tube (4). One of the sleeves (9) is provided with a protruding plate (10), and the protruding plate (10) is slidably disposed with the groove (6).

4. The pipe insulation effect testing device according to claim 1, characterized in that: A sealing gasket (11) is provided on the side of the cover plate (13) that is close to the vertical plate (2). One end of the cover plate (13) is rotatably connected to the vertical plate (3). A buckle is provided between the other end of the cover plate (13) and the vertical plate (3). The air outlet pipe (12) passes through the corresponding sealing gasket (11).

5. The pipe insulation effect testing device according to claim 1, characterized in that: The clamping assembly includes a support plate (14), which is vertically arranged. One end of the support plate (14) is mounted on the base (1). Two clamping plates (15) are symmetrically arranged on the support plate (14). The two clamping plates (15) are slidably arranged with the support plate (14). A bidirectional threaded rod (16) is rotatably mounted on the support plate (14). The bidirectional threaded rod (16) is threadedly connected to the clamping plate (15). One end of the bidirectional threaded rod (16) is provided with a drive source (17).

6. The pipe insulation effect testing device according to claim 5, characterized in that: The upper end of the support plate (14) is fixedly connected to the first vertical plate (2) and the second vertical plate (3) via a horizontal plate. A "V" shaped groove is provided on the side of the two clamping plates (15) that are close to each other, and a rubber pad is provided on the inner wall of the "V" shaped groove.

7. The pipe insulation effect testing device according to claim 3, characterized in that: Solenoid valves are provided on the air outlet pipe (12), the jet head (7) and the air inlet pipe (5), a controller is installed on the vertical plate (2), and temperature sensors are installed on the spiral plate (8) and the inner wall of the sleeve (9).

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