Temperature testing device for prefabricated directly-buried thermal insulation pipe
By designing a temperature test device for prefabricated direct buried insulation pipes, the air supply box and detection box are used to simulate the flow of high-temperature gas in the insulation pipes, the problem that existing static detection methods cannot accurately reflect the temperature changes of substances in the pipelines is solved, and dynamic detection of insulation pipes and more accurate insulation performance evaluation is achieved.
Patent Information
- Application Number
- CN202421633423.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The existing static detection methods of insulation pipes cannot accurately reflect the temperature changes of substances in the pipeline in the motion state, resulting in inaccurate insulation performance detection data.
A prefabricated direct buried insulation pipe temperature testing device is designed, including an air supply box, a detection box and a placement rack. By blowing high-temperature gas into the insulation pipe and flowing inside, and then detecting the gas temperature in the detection box, it simulates the temperature change during actual transportation.
Dynamic detection of insulation pipes is realized, which can more accurately reflect the temperature changes of substances in the pipeline in the motion state, thereby improving the accuracy of insulation performance detection data.
Smart Images
Figure CN222952266U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermal insulation pipe testing devices, in particular to a prefabricated directly buried thermal insulation pipe temperature testing device. Background Art
[0002] Insulated pipes are mainly used to transport liquids or gases. Because of their thermal insulation properties, they can ensure the stability of the materials transported in the pipes. Therefore, they are often used in chemical, petroleum, aerospace and other fields. Due to the particularity of the transported materials, the quality of the pipes, especially the thermal insulation properties, are very high.
[0003] After the pipeline is produced, it needs to be tested to determine the thermal insulation performance of the pipeline. Currently, most of the tests are static tests, that is, high-temperature gas or liquid is injected into the pipeline, and then the pipeline is sealed and waited for a period of time. The material in the pipe is taken out to detect the temperature change to obtain the thermal insulation performance. However, the material in the actual pipeline is in a state of motion, and the static test data is not accurate. For this reason, a prefabricated direct-buried insulated pipe temperature test device is proposed. Utility Model Content
[0004] The technical solution adopted by the utility model to solve the technical problem is: a prefabricated directly buried insulated pipe temperature test device, including an air supply box, the inner wall of the air supply box is detachably connected to a heating plate, three placement racks are set up on one side of the heating plate, a detection box is set up on the side of the placement rack away from the air supply box, a recovery tank is embedded and fixedly connected in the middle of the side wall of the detection box on the side away from the placement rack, an air outlet is formed through the side wall of the air supply box opposite to the placement rack, an air inlet is formed through the side wall of the detection box opposite to the air outlet, a test insulated pipe is placed in the placement rack, and both ends of the insulated pipe are detachably connected to the air supply box and the detection box.
[0005] As a preferred technical solution of the utility model, the inner wall of the air supply box is evenly fixedly connected with a heating plate, the middle of the side wall of the air supply box away from the placement rack is detachably connected with a fan box, a hair dryer is detachably connected inside the fan box, the side wall of the air supply box with an air outlet is detachably connected with a reducing connecting pipe, and the reducing connecting pipe is detachably connected to the side wall of the air supply box close to the air outlet.
[0006] As a preferred technical solution of the utility model, a temperature measuring plate is detachably connected to the top side wall of the detection box, the temperature measuring plate is connected to the display device through wires, the temperature measuring plate corresponds to the air inlet, and the interior of the detection box is a closed structure.
[0007] As a preferred technical solution of the utility model, an air supply port is fixedly connected to the middle of the bottom side wall of the recovery tank, the air supply port is an L-shaped structure, and one end of the air supply port extends into the detection box, and a partition is fixedly connected to the side wall inside the recovery tank and close to the top.
[0008] As a preferred technical solution of the utility model, a through hole is provided on the partition, a steam collecting groove is provided above the partition, a water pipe is embedded and connected to the side wall of the air supply box and located below the partition, and the water pipe is filled with liquid, the water pipe is connected with the steam collecting groove through the through hole on the partition, and a steam exhaust port is fixedly connected through the side wall of the recovery tank near the top edge, and the steam exhaust port is connected to the steam collecting groove.
[0009] As an optimal technical solution of the utility model, the placement rack is an arc-shaped structure, and the side walls on both sides of the bottom of the placement rack are fixedly connected with connecting blocks. The bottom side walls of the connecting blocks are detachably connected with supporting telescopic rods, and the bottom ends of the supporting telescopic rods are fixedly connected with rollers. The bottom side walls of the air supply box and the detection box are detachably connected with two pairs of rollers.
[0010] The utility model has the following advantages: connecting the two end ends of the insulation pipe with the air outlet and the air inlet, starting the hair dryer in the fan box to blow the high-temperature gas in the air delivery box into the pipe, the gas flows along the pipe and finally enters the detection box, and the temperature of the gas discharged from the pipe is detected by the temperature measuring plate in the detection box. The detection result is compared with the temperature in the air delivery box to obtain the temperature loss rate and insulation performance of the insulation pipe. Because the gas is detected after flowing in the pipe, it is a dynamic detection, which better simulates the temperature preservation performance during actual transportation and improves the accuracy of the data. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of the utility model;
[0012] Figure 2 This is a schematic diagram of the three-dimensional internal structure of the air delivery box of a preferred embodiment of the utility model;
[0013] Figure 3 This is a schematic diagram of the three-dimensional internal structure of a detection box in a preferred embodiment of the utility model;
[0014] Figure 4 It is a schematic diagram of a half-section three-dimensional structure of a recovery pipe of a preferred embodiment of the utility model.
[0015] Explanation of the reference numerals: 1. air supply box; 2. air outlet; 3. placement rack; 4. connecting block; 5. supporting telescopic rod; 6. roller; 7. detection box; 8. recovery tank; 9. fan box; 10. heating plate; 11. reducing connecting pipe; 12. air inlet; 13. temperature measuring plate; 14. partition; 15. water pipe; 16. steam collecting tank; 17. exhaust port; 18. air supply port. DETAILED DESCRIPTION
[0016] The utility model will be further described below in conjunction with the accompanying drawings.
[0017] Please refer to Figure 1-4 The utility model prefabricated direct buried thermal insulation pipe temperature test device comprises an air supply box 1, the inner wall of the air supply box 1 is detachably connected with a heating plate 10, one side of the heating plate 10 is provided with three placement racks 3, a side of the placement rack 3 away from the air supply box 1 is provided with a detection box 7, a recovery tank 8 is embedded and fixedly connected in the middle of the side wall of the detection box 7 away from the placement rack 3, an air outlet 2 is provided through the side wall of the air supply box 1 opposite to the placement rack 3, an air inlet 12 is provided through the side wall of the detection box 7 opposite to the air outlet 2, a test thermal insulation pipe is placed in the placement rack 3, and both ends of the thermal insulation pipe are detachably connected to the air supply box 1 and the detection box 7;
[0018] A heating plate 10 is evenly fixedly connected to the inner wall of the air supply box 1, a fan box 9 is detachably connected to the middle of the side wall of the air supply box 1 away from the placement rack 3, a hair dryer is detachably connected to the fan box 9, a reducing connecting pipe 11 is detachably connected to the side wall of the air supply box 1 with an air outlet 2, and the reducing connecting pipe 11 is detachably connected to the side wall of the air supply box 1 near the air outlet 2, a temperature measuring plate 13 is detachably connected to the top side wall of the detection box 7, the temperature measuring plate 13 is connected to the display device through electric wires, the temperature measuring plate 13 corresponds to the air inlet 12, and the interior of the detection box 7 is a closed structure.
[0019] The technical effect of this scheme is as follows: first start the heating plate 10 in the air supply box 1, and as the heating plate 10 heats up, start the hair dryer in the fan box 9 to inject air into the air supply box 1, and the air is heated. When it is heated to a suitable temperature, open the valve on the reducer connecting pipe 11 to allow the high-temperature gas in the air supply box 1 to enter the insulation pipe and flow inside, and finally the gas enters the detection box 7 through the air inlet 12. The gas contacts the temperature measuring plate 13 in the detection box 7 to test the temperature of the gas. By comparing this temperature with the temperature in the air supply box 1, the insulation performance and the rate of temperature loss can be obtained. Because the flowing gas is tested, the state of temperature loss under actual transportation conditions can be simulated, making the output data more accurate.
[0020] An air supply port 18 is fixedly connected to the middle of the bottom side wall of the recovery tank 8. The air supply port 18 is an L-shaped structure, and one end of the air supply port 18 extends into the detection box 7. A partition 14 is fixedly connected to the side wall in the recovery tank 8 and near the top. A through hole is provided on the partition 14, and a steam collecting groove 16 is provided above the partition 14. A water pipe 15 is inlaid and connected to the side wall in the air supply box 1 and located below the partition 14, and the water pipe 15 is filled with liquid. The water pipe 15 is connected with the steam collecting groove 16 through the through hole on the partition 14. A steam exhaust port 17 is fixedly connected to the side wall near the top edge of the recovery tank 8, and the steam exhaust port 17 is connected to the steam collecting groove 16. The placement rack 3 is an arc-shaped structure, and the side walls on both sides of the bottom of the placement rack 3 are fixedly connected with a connecting block 4. The bottom side wall of the connecting block 4 is detachably connected to a supporting telescopic rod 5, and the bottom end of the supporting telescopic rod 5 is fixedly connected to a roller 6. The bottom side walls of the air supply box 1 and the detection box 7 are detachably connected to two pairs of rollers 6.
[0021] The technical effect of this scheme is as follows: different sizes of reducer connecting pipes 11 are installed on the air supply box 1 so as to be connected with insulation pipes of different sizes, thereby facilitating the delivery of high-temperature gas into the insulation pipe and improving the practicability and flexibility of application. The detection box 7 installed on one side of the detection box 7 can recycle the discharged high-temperature gas to reduce energy waste and achieve energy-saving effects. The recovered heat energy can be reused after conversion. The connecting block 4 is started to adjust the height of the placement rack 3 according to the size of the insulation pipe, so as to facilitate the alignment of the center point of the insulation pipe with the center point of the air outlet 2, thereby facilitating the transportation and flow of gas.
[0022] Specifically, when the utility model is used, the insulation pipe to be tested is placed on the placement rack 3, and then the two end ends of the insulation pipe are connected to the air outlet 2 and the air inlet 12, and the hair dryer is started to inject air into the air supply box 1. The valve on the reducer 11 is first closed, and then the heating plate 10 is started to heat the air. As the air is continuously injected into the heated air supply box 1, the pressure inside increases. When the temperature reaches the specified temperature, the valve is opened and the high-temperature gas flows along the insulation pipe under the drive of the pressure and finally enters the detection box 7. The gas temperature can be detected by the temperature measuring plate 13 in the detection box 7. When it is compared with the temperature in the air supply box 1, the rate of temperature loss and the thermal insulation can be effectively obtained, and dynamic detection can improve the accuracy of the detection data.
[0023] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
[0024] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.
[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A prefabricated direct buried thermal insulation pipe temperature test device, comprising an air supply box (1), characterized in that: The inner wall of the air supply box (1) is detachably connected to a heating plate (10), one side of the heating plate (10) is provided with three placement racks (3), a side of the placement rack (3) away from the air supply box (1) is provided with a detection box (7), a recovery tank (8) is embedded and fixedly connected in the middle of the side wall of the detection box (7) away from the placement rack (3), an air outlet (2) is provided through the side wall of the air supply box (1) opposite to the placement rack (3), an air inlet (12) is provided through the side wall of the detection box (7) opposite to the air outlet (2), a test insulation tube is provided in the placement rack (3), and both ends of the insulation tube are detachably connected to the air supply box (1) and the detection box (7).
2. The prefabricated direct buried thermal insulation pipe temperature test device according to claim 1, characterized in that: The inner wall of the air supply box (1) is evenly fixedly connected with a heating plate (10); the middle of the side wall of the air supply box (1) away from the placement rack (3) is detachably connected with a fan box (9); a hair dryer is detachably connected inside the fan box (9); the side wall of the air supply box (1) provided with an air outlet (2) is detachably connected with a reducing connecting pipe (11); the reducing connecting pipe (11) is detachably connected to the side wall of the air supply box (1) close to the air outlet (2).
3. The prefabricated direct buried thermal insulation pipe temperature test device according to claim 1, characterized in that: A temperature measuring plate (13) is detachably connected to the top side wall of the detection box (7); the temperature measuring plate (13) is connected to a display device via an electric wire; the temperature measuring plate (13) corresponds to the air inlet (12); and the interior of the detection box (7) is a closed structure.
4. The prefabricated direct buried thermal insulation pipe temperature test device according to claim 1, characterized in that: The middle of the bottom side wall of the recovery tank (8) is fixedly connected to an air supply port (18), the air supply port (18) is an L-shaped structure, and one end of the air supply port (18) extends into the detection box (7), and a partition plate (14) is fixedly connected to the side wall inside the recovery tank (8) and close to the top.
5. The prefabricated direct buried thermal insulation pipe temperature test device according to claim 4, characterized in that: The partition (14) is provided with a through hole, and a steam collecting tank (16) is provided above the partition (14). A water pipe (15) is embedded and connected to the side wall of the air supply box (1) below the partition (14), and the water pipe (15) is filled with liquid. The water pipe (15) is connected to the steam collecting tank (16) through the through hole on the partition (14). A steam exhaust port (17) is fixedly connected to the side wall of the recovery tank (8) near the top edge, and the steam exhaust port (17) is connected to the steam collecting tank (16).
6. The prefabricated direct buried thermal insulation pipe temperature test device according to claim 1, characterized in that: The placement rack (3) is an arc-shaped structure, and the side walls on both sides of the bottom of the placement rack (3) are fixedly connected to connecting blocks (4), the bottom side walls of the connecting blocks (4) are detachably connected to supporting telescopic rods (5), and the bottom ends of the supporting telescopic rods (5) are fixedly connected to rollers (6), and the bottom side walls of the air supply box (1) and the detection box (7) are detachably connected to two pairs of rollers (6).