A thermal insulation performance test device for thermal insulation pipe fittings

Abstract

The present invention relates to the field of thermal insulation pipe detection technology, in particular to a thermal insulation performance test device for a thermal insulation pipe fitting, comprising a pipe fitting and a partition fixedly connected in the middle of the pipe fitting, winding shafts are rotatably installed on both sides of the partition, two ends of a traction rope are respectively wound around the two winding shafts, a heat flux meter for temperature measurement is connected to the traction rope through a connecting structure, and a friction roller is coaxially fixedly connected to the end face of the winding shaft; when the thermal insulation performance test device for a thermal insulation pipe fitting provided by the present invention is used to test a large-scale thermal insulation pipe with a long length, the heat flux meter can be moved along the axial direction of the thermal insulation pipe through the cooperation of a driving structure and a transmission structure, so as to detect the temperature at different positions of the thermal insulation pipe, which can not only save the time required for data sampling by test personnel, but also reduce the labor intensity of the test personnel.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation pipe detection, and in particular to a thermal insulation performance test device for thermal insulation pipe fittings. Background Art

[0002] Before many insulation projects are constructed, pipeline insulation test devices are built in the laboratory to simulate real engineering application scenarios, and the test data is used to verify whether the insulation project design is economical and reasonable. In addition, the pipeline insulation test device can comprehensively study the effects of different insulation materials, insulation structures, and insulation thicknesses on insulation performance.

[0003] During the pipeline insulation performance test, the temperature of the pipe wall needs to be monitored. In the prior art, most pipeline insulation performance test devices use heat flux meters as temperature measuring equipment. During the test, the tester sticks the heat flux meter on the pipe wall with tape. The heat flux meter collects the pipe wall temperature and wirelessly sends the collected data to the terminal. The thermal insulation performance of the pipeline can be calculated based on the data received by the terminal.

[0004] However, the above-mentioned pipeline insulation performance test device has the following problems in actual application. When conducting a pipeline insulation performance test on a long large-scale insulated pipe, due to its long length, in order to reduce the influence of local data errors on the entire test data, it is necessary to set a large number of data sampling points in the pipeline axis direction, and measure the temperature of the data at these sampling points one by one. After the sampled data is received by the test personnel at the terminal, the test personnel need to disassemble the heat flow meter, replace the sampling point, and then paste it. During this process, the test personnel need to move along the pipeline many times, which not only greatly increases the test time required for the test, but also increases the labor intensity of the test personnel. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a thermal insulation performance test device for thermal insulation pipes.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A thermal insulation performance test device for thermal insulation pipe fittings is designed, comprising a pipe fitting and a partition fixed in the middle of the pipe fitting, winding shafts are rotatably installed on both sides of the partition, the two ends of the traction rope are respectively wound on the two winding shafts, a heat flow meter for temperature measurement is connected to the traction rope through a connecting structure, and a friction roller is coaxially fixed on the end surface of the winding shaft;

[0008] The two end surfaces of the pipe fitting are fixedly connected with mounting plates, and transmission structures are respectively arranged on the two mounting plates to enable the two winding shafts to rotate, and the transmission structure comprises a rotating body with a truncated cone-shaped thin-walled structure, and a first brake structure is arranged on the inner wall of the rotating body to brake the friction roller. The first brake structure comprises an inner sliding block, and a plurality of inner sliding grooves are opened on the inner wall of the rotating body along the generatrix direction, and the inner sliding block is slidably matched in the inner sliding groove, and the inner sliding block is fixedly connected with a first guide groove, and a first brake block is slidably matched in the first guide groove to apply elastic force to the first brake block. A circular ring is arranged on the winding shaft sleeve, and a spring is arranged in the ring, one end of the spring is fixedly connected to the inner wall of the ring, and the other end is fixedly connected to the winding shaft, and a sleeve with a cylindrical thin-walled structure is coaxially fixed on the end surface of the ring, and a plurality of first notches are radially opened on the sleeve, and the first notches correspond one by one to the inner sliding grooves, and the first brake block is slidably matched in the first notch, and a second brake structure is arranged on the outer wall of the rotating body to brake the rotating body.

[0009] Preferably, the second braking structure includes a rotating sleeve of a cylindrical thin-walled structure, which is rotatably mounted on the end surface of the mounting plate, the rotating sleeve is coaxially arranged with the rotating body, and the rotating sleeve is sleeved on the rotating body, a plurality of second notches are radially opened on the rotating sleeve, and a plurality of outer sliding grooves are opened on the outer wall of the rotating body along the generatrix direction, the outer sliding grooves correspond to the second notches one by one, an outer sliding block is matched for sliding in the outer sliding groove, a second guide groove is fixedly connected to the outer sliding block, a second brake block is matched for sliding in the second guide groove, the second brake block is slidably matched in the second notch, a second spring is fixedly connected to the second guide groove to apply elastic force to the second brake block, a friction ring is fixedly connected to the end surface of the mounting plate, the friction ring is coaxially arranged with the rotating body, and the friction ring is sleeved on the second brake block, and a driving structure is provided on the mounting plate to drive the rotating body to rotate.

[0010] Preferably, the driving structure comprises a rotating tube and a connecting rod, the rotating tube is rotatably mounted in the middle of the mounting plate, one end of the connecting rod is fixedly connected to a top plate, the top plate is slidably fitted in the rotating tube, a key bar is fixedly connected to the inner wall of the rotating tube, a key slot is provided on the outer edge of the top plate, and the key bar is slidably fitted in the key slot;

[0011] The other end of the connecting rod is fixedly connected with a connecting plate, and the connecting plate is fixedly connected to the rotating body.

[0012] Preferably, an axial displacement structure is provided on the rotating tube to drive the top plate to move axially along the rotating tube. The axial displacement structure includes a compression spring and a rotating rod. The rotating shaft is rotatably installed on the rotating tube. The axial direction of the rotating shaft coincides with the radial direction of the rotating tube. A rotating rod with an arc-shaped end is fixed to the rotating shaft. The distance between the end of the rotating rod and the rotating shaft is greater than the distance between the rotating shaft and the top plate. The compression spring is sleeved on the connecting rod to apply elastic force to the top plate.

[0013] Preferably, the traction rope is rollingly fitted with a movable pulley, and a hook is fixed on the movable pulley.

[0014] Preferably, the connection structure includes a fastener and a sliding sleeve, and both are fixedly connected to the heat flow meter, wherein the fastener is fixedly connected to the traction rope, and the sliding sleeve is slidably matched with the traction rope.

[0015] Preferably, the winding directions of the traction ropes on the two winding shafts are the same.

[0016] Preferably, friction is generated when the friction roller contacts the first brake block, and friction is generated when the friction ring contacts the second brake block.

[0017] The thermal insulation performance testing device for an insulated pipe fitting proposed in the present invention has the beneficial effect that when the thermal insulation performance testing device for an insulated pipe fitting provided by the present invention is used to test a large insulated pipe with a long length, the cooperation of the driving structure and the transmission structure enables the heat flow meter to move along the axial direction of the insulated pipe, thereby detecting the temperature at different positions of the insulated pipe. Compared with the prior art, the thermal insulation performance testing device for an insulated pipe fitting provided by the present invention is not only very convenient in terms of storage and carrying, but also can adjust the position more conveniently when measuring temperature during the test, which not only saves the time required for data sampling by the test personnel, but also reduces the labor intensity of the test personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a thermal insulation performance test device for thermal insulation pipes proposed by the present invention Figure 1 .

[0019] Figure 2 A schematic diagram of the structure of a thermal insulation performance test device for thermal insulation pipes proposed by the present invention Figure 2 .

[0020] Figure 3 A thermal insulation performance test device for thermal insulation pipes proposed by the present invention Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 The present invention provides a schematic diagram of the internal structure of a thermal insulation pipe of a thermal insulation performance testing device.

[0022] Figure 5 A thermal insulation performance test device for thermal insulation pipes proposed by the present invention Figure 4 Schematic diagram of the local structure.

[0023] Figure 6 This is a schematic structural diagram of the cooperation between a traction rope and a winding shaft of a thermal insulation performance test device for thermal insulation pipes proposed by the present invention.

[0024] Figure 7The present invention provides a schematic structural diagram of a mounting plate of a thermal insulation performance testing device for thermal insulation pipes.

[0025] Figure 8 A thermal insulation performance test device for thermal insulation pipes proposed by the present invention Figure 7 main view.

[0026] Fig. 9 A thermal insulation performance test device for thermal insulation pipes proposed by the present invention Figure 8 Middle BB section.

[0027] Fig.10 The present invention provides a schematic diagram of the structure inside a friction ring of a thermal insulation performance test device for thermal insulation pipes.

[0028] Fig.11 The present invention provides a schematic diagram of the structure inside a sleeve of a thermal insulation performance test device for thermal insulation pipes.

[0029] Fig.12 A schematic diagram of the structure of a rotating body of a thermal insulation performance test device for thermal insulation pipes proposed by the present invention Figure 1 .

[0030] Fig.13 A schematic diagram of the structure of a rotating body of a thermal insulation performance test device for thermal insulation pipes proposed by the present invention Figure 2 .

[0031] Fig.14 This is a schematic structural diagram of the cooperation between a rotating sleeve and a mounting plate of a thermal insulation performance test device for thermal insulation pipes proposed by the present invention.

[0032] Fig.15 A schematic diagram of the structure inside the rotating tube of a thermal insulation performance test device for thermal insulation pipes proposed by the present invention Figure 1 .

[0033] Fig.16 A schematic diagram of the structure inside the rotating tube of a thermal insulation performance test device for thermal insulation pipes proposed by the present invention Figure 2 .

[0034] Fig.17 A thermal insulation performance test device for thermal insulation pipes proposed by the present invention Fig.16 Enlarged view of center C.

[0035] Fig.18 The present invention is a schematic diagram of the working state of a thermal insulation performance test device for thermal insulation pipes.

[0036] In the figure: 1, pipe fitting; 2, partition; 3, mounting plate; 4, winding shaft; 5, traction rope; 6, spring; 7, ring; 8, sleeve; 801, first notch; 9, friction roller; 10, rotating body; 101, inner slide groove; 102, outer slide groove; 11, inner slider; 12, first guide groove; 13, first spring; 14, first brake block; 15, outer slider; 16, second guide groove; 17, second spring; 18, second brake block; 19, rotating sleeve; 20, second notch; 21, friction ring; 22, connecting plate; 23, connecting rod; 24, rotating tube; 25, compression spring; 26, top plate; 27, rotating rod; 28, keyway; 29, key strip; 30, movable pulley; 31, hook; 32, heat flow meter; 33, fastener; 34, sliding sleeve; 35, rotating shaft. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] Example 1: Reference Figure 1-Figure 4 A thermal insulation performance test device for an insulated pipe, comprising a pipe 1 and a partition 2 fixedly connected to the middle of the pipe 1, winding shafts 4 are rotatably installed on both sides of the partition 2, two ends of a traction rope 5 are respectively wound on the two winding shafts 4, and the winding directions of the traction ropes 5 on the two winding shafts 4 are the same, a movable pulley 30 is rollingly matched on the traction rope 5, a hook 31 is fixed on the movable pulley 30, a heat flux meter 32 for temperature measurement is connected to the traction rope 5 through a connecting structure, the connecting structure comprises a fastener 33 and a sliding sleeve 34, the fastener 33 and the sliding sleeve 34 are arranged in parallel, and both are fixedly connected to the heat flux meter 32, wherein the fastener 33 is fixedly connected to the traction rope 5, and the sliding sleeve 34 is slidingly matched with the traction rope 5.

[0039] like Fig.18 As shown, when the device is in use, the movable pulley 30 is hung on one end of the insulation pipe through the hook 31, and the pipe 1 is fixed on the other end of the insulation pipe. When temperature measurement is required during the test, it is only necessary to drive the two winding shafts 4 to rotate separately. During the rotation of the winding shafts 4, the traction rope 5 will be wound, and the heat flux meter 32 fixed on the traction rope 5 will move along the axial direction of the insulation pipe under the action of tension, so as to adjust the position of the heat flux meter 32 on the insulation pipe to detect the temperature of the pipe wall at different positions of the insulation pipe.

[0040] like Figure 5-Figure 16As shown, mounting plates 3 are fixedly connected to both end surfaces of the pipe 1, and transmission structures are respectively arranged on the two mounting plates 3 to rotate the two winding shafts 4. The two transmission structures are symmetrically arranged about the partition plate 2. The transmission structure includes a rotating body 10 with a truncated cone-shaped thin-walled structure. The rotating body 10 can move axially. A rotating sleeve 19 with a cylindrical thin-walled structure is rotatably installed on the end surface of the mounting plate 3. The rotating sleeve 19 is arranged coaxially with the rotating body 10, and the rotating sleeve 19 is sleeved on the rotating body 10. A plurality of second notches 20 are radially opened on the rotating sleeve 19, and a plurality of outer sliding grooves 102 are opened on the outer wall of the rotating body 10 along the generatrix direction. The outer slide groove 102 corresponds to the second notch 20 one by one, and the outer slider 15 slides in the outer slide groove 102, and the outer slider 15 is fixedly connected to the second guide groove 16, and the second brake block 18 slides in the second guide groove 16. The second brake block 18 slides in the second notch 20, and the second guide groove 16 is fixedly connected to the second spring 17 to apply elastic force to the second brake block 18. A friction ring 21 is fixedly connected to the end surface of the mounting plate 3, and the friction ring 21 is coaxially arranged with the rotating body 10, and the friction ring 21 is sleeved on the second brake block 18. A driving structure is provided on the mounting plate 3 to drive the rotating body 10 to rotate.

[0041] As Fig. 9 As shown in the example, the axial movement of the rotating body 10 corresponds to Fig. 9 In is up or down, where:

[0042] When the rotating body 10 moves upward, the outer slider 15 will slide in the outer slide groove 102 on the outer wall of the rotating body 10. Since the outer slider 15, the second guide groove 16 and the second brake shoe 18 are connected, and the second brake shoe 18 is located in the second notch 20, the outer slider 15, the second guide groove 16 and the second brake shoe 18 cannot move in the vertical direction. During the upward movement of the rotating body 10, since the outer slider 15 cannot move upward, the outer slider 15 will make a centripetal movement in the horizontal direction during the upward movement of the rotating body 10. The centripetal movement of the outer slider 15 will drive the second guide groove 16 and the second brake shoe 18 to make a centripetal movement, thereby separating the second brake shoe 18 from the inner wall of the friction ring 21; after the second brake shoe 18 is separated from the inner wall of the friction ring 21, no friction is generated between the two. At this time, the rotating body 10 can rotate freely around its own axis.

[0043] Similarly, when the rotating body 10 moves downward, the outer sliding block 15 will perform centrifugal motion in the horizontal direction during the downward movement of the rotating body 10. The centrifugal motion of the outer sliding block 15 will drive the second guide groove 16 and the second brake block 18 to perform centrifugal motion, so that the second brake block 18 abuts against the inner wall of the friction ring 21. After the second brake block 18 contacts the inner wall of the friction ring 21, friction is generated between the two. Under the action of the friction force, the rotating body 10 will be limited and cannot rotate.

[0044] like Figure 5-Figure 16 , a plurality of inner grooves 101 are provided on the inner wall of the rotating body 10 along the generatrix direction, an inner slider 11 is slidably matched in the inner groove 101, a first guide groove 12 is fixedly connected to the inner slider 11, a first brake block 14 is slidably matched in the first guide groove 12, a first spring 13 is provided on the first guide groove 12 to apply elastic force to the first brake block 14, an annular ring 7 is sleeved on the winding shaft 4, a spring 6 is provided in the ring 7, one end of the spring 6 is fixedly connected to the inner wall of the ring 7, and the other end is fixedly connected to the winding shaft 4, a sleeve 8 with a cylindrical thin-walled structure is coaxially fixed on the end face of the ring 7, a plurality of first notches 801 are radially provided on the sleeve 8, the first notches 801 correspond to the inner grooves 101 one by one, and the first brake block 14 is slidably matched in the first notch 801, a friction roller 9 is coaxially fixedly connected to the end face of the winding shaft 4, and the friction roller 9 matches the first brake block 14;

[0045] Likewise Fig. 9 As shown in the example, the driving rotating body 10 is moved up or down, wherein:

[0046] When the rotating body 10 moves upward, relative sliding will occur between the inner slider 11 and the inner slide groove 101. Since the inner slider 11, the first guide groove 12 and the first brake block 14 are connected, and the first brake block 14 is located at the first slot 801 and cannot move vertically, the outer slider 15 will be driven to move centripetally during the upward movement of the rotating body 10. The centripetal movement of the outer slider 15 will drive the first guide groove 12 and the first brake block 14 to move centripetally. The first brake block 14 will abut against the friction roller 9 and generate friction when it moves centripetally. Under the action of friction, the friction roller 9, the first brake block 14 and the sleeve 8 are considered to be fixedly connected.

[0047] Similarly, when the rotating body 10 moves downward, the outer sliding block 15 will be driven to perform centrifugal motion during the downward movement of the rotating body 10. The centrifugal motion of the outer sliding block 15 will drive the first guide groove 12 and the first brake block 14 to perform centrifugal motion, so that the first brake block 14 is separated from the friction roller 9, so that no friction is generated between the friction roller 9 and the first brake block 14. At this time, the friction roller 9 can rotate freely.

[0048] The workflow of this embodiment includes the following steps:

[0049] Step 1: In the initial state, the rotating body 10 is moved downward. Based on the description of the first embodiment, it can be known that after the rotating body 10 moves downward, it will be limited and cannot rotate, while the friction roller 9 can rotate freely.

[0050] Step 2: If Fig.18 As shown, the pipe fitting 1 is fixed to one end of the insulation pipe, and the movable pulley 30 is moved to the other end of the insulation pipe, and the movable pulley 30 is hung on the end surface of the insulation pipe through the hook 31.

[0051] When the movable pulley 30 moves, the movable pulley 30 applies the same pulling force to the traction ropes 5 on the two winding shafts 4. The traction ropes 5 are wound around the winding shafts 4. After receiving the pulling force given by the movable pulley 30, the traction ropes 5 drive the winding shafts 4 to rotate.

[0052] During the rotation of the winding shaft 4: since the friction roller 9 can rotate freely at this time, the winding shaft 4 will charge the mainspring 6 during the rotation while driving the friction roller 9 to rotate synchronously.

[0053] During the charging process of the mainspring 6: since the rotating body 10 is limited and cannot rotate, the ring 7 is fixedly connected to the sleeve 8, and the rotating body 10 is connected to the sleeve 8 through the inner slider 11, the first guide groove 12 and the first brake block 14. Therefore, the ring 7 will not rotate, so that the mainspring 6 can continue to charge without releasing.

[0054] Step 3: After the movable pulley 30 and the pipe 1 are fixed at both ends of the insulation pipe, the rotating body 10 is moved upward. Based on the description in the above embodiment 1, it can be known that the rotating body 10 can rotate freely after moving upward, and the friction roller 9, the first brake block 14 and the sleeve 8 are considered to be fixedly connected, that is, the winding shaft 4 and the rotating body 10 are considered to be fixedly connected, and the energy of the spring 6 will not be released. At this time, it is only necessary to drive the rotating body 10 to rotate, so that the winding shaft 4 can be rotated, so as to reel in and unreel the traction rope 5, so as to drive the heat flow meter 32 to move along the axial direction of the insulation pipe to measure the temperature at different places of the pipe wall.

[0055] Step 4: After the temperature measurement is completed, the rotating body 10 only needs to be moved down to restore to the initial state, and the hook 31 is removed. At this time, the mainspring 6 will drive the winding shaft 4 to reverse, thereby rewinding the traction rope 5, so that the stretched traction rope 5 is re-stored on the winding shaft 4.

[0056] Embodiment 2: Figure 15-17As shown, the driving structure includes a rotating tube 24 and a connecting rod 23. The rotating tube 24 is rotatably installed in the middle of the mounting plate 3. One end of the connecting rod 23 is fixedly connected to a top plate 26, and the top plate 26 is slidably fitted in the rotating tube 24. A key bar 29 is fixedly connected to the inner wall of the rotating tube 24, and a key groove 28 is opened on the outer edge of the top plate 26. The key bar 29 is slidably fitted in the key groove 28; the other end of the connecting rod 23 is fixedly connected to a connecting plate 22, and the connecting plate 22 is fixedly connected to the rotating body 10. An axial displacement structure is provided on the rotating tube 24 to drive the top plate 26 to move axially along the rotating tube 24. The axial displacement structure includes a compression spring 25 and a rotating rod 27. The rotating shaft 35 is rotatably installed on the rotating tube 24. The axial direction of the rotating shaft 35 coincides with the radial direction of the rotating tube 24. The rotating shaft 35 is fixedly connected to the rotating shaft 35 with an arc-shaped end. The distance between the end of the rotating rod 27 and the rotating shaft 35 is greater than the distance between the rotating shaft 35 and the top plate 26. The compression spring 25 is sleeved on the connecting rod 23 to apply elastic force to the top plate 26.

[0057] This embodiment is mainly used to drive the rotating body 10 to rotate and move axially, and the driving process is as follows:

[0058] First, drive the rotating rod 27 to rotate around the rotating shaft 35. During the rotation process, the rotating rod 27 will apply pressure to the top plate 26 and drive the top plate 26 to slide axially in the rotating tube 24. During the sliding of the top plate 26 in the rotating tube 24, the top plate 26 will compress the compression spring 25 while driving the rotating body 10 to move synchronously through the connecting rod 23, so that the rotating body 10 can be axially displaced.

[0059] Secondly, after the rotating rod 27 rotates, the tester can drive the rotating tube 24 to rotate through the handle on the rotating rod 27, thereby driving the rotating body 10 to rotate.

[0060] Working principle:

[0061] When measuring temperature:

[0062] S1: driving the rotating rod 27 to rotate around the rotating shaft 35. During the rotation process, the rotating rod 27 applies pressure to the top plate 26 and drives the top plate 26 to slide axially in the rotating tube 24. During the sliding process of the top plate 26 in the rotating tube 24, the top plate 26 compresses the compression spring 25 and drives the rotating body 10 to move synchronously through the connecting rod 23, so that the rotating body 10 can be axially displaced.

[0063] The rotating body 10 is moved downward by rotating the rotating rod 27. Based on the description of the first embodiment, it can be known that after the rotating body 10 moves downward, it will be limited and cannot rotate, while the friction roller 9 can rotate freely.

[0064] S2: Fig.18As shown, the pipe fitting 1 is fixed to one end of the insulation pipe, and the movable pulley 30 is moved to the other end of the insulation pipe, and the movable pulley 30 is hung on the end surface of the insulation pipe through the hook 31.

[0065] When the movable pulley 30 moves, the movable pulley 30 applies the same pulling force to the traction ropes 5 on the two winding shafts 4. The traction ropes 5 are wound around the winding shafts 4. After receiving the pulling force given by the movable pulley 30, the traction ropes 5 drive the winding shafts 4 to rotate.

[0066] During the rotation of the winding shaft 4: since the friction roller 9 can rotate freely at this time, the winding shaft 4 will charge the mainspring 6 during the rotation while driving the friction roller 9 to rotate synchronously.

[0067] During the charging process of the mainspring 6: since the rotating body 10 is limited and cannot rotate, the ring 7 is fixedly connected to the sleeve 8, and the rotating body 10 is connected to the sleeve 8 through the inner slider 11, the first guide groove 12 and the first brake block 14. Therefore, the ring 7 will not rotate, so that the mainspring 6 can continue to charge without releasing.

[0068] S3: After the movable pulley 30 and the pipe 1 are fixed at both ends of the insulation pipe, the rotating body 10 is moved upward. Based on the description in the above embodiment 1, it can be known that the rotating body 10 can rotate freely after moving upward, and the friction roller 9, the first brake block 14 and the sleeve 8 are considered to be fixedly connected, that is, the winding shaft 4 and the rotating body 10 are considered to be fixedly connected, and the energy of the spring 6 will not be released. The test personnel drive the rotating tube 24 to rotate through the handle on the rotating rod 27, thereby driving the rotating body 10 to rotate, and the winding shaft 4 can be rotated, so as to reel in and unreel the traction rope 5, so as to drive the heat flow meter 32 to move along the axial direction of the insulation pipe to measure the temperature at different locations of the pipe wall.

[0069] S4: After the temperature measurement is completed, the rotating body 10 only needs to be moved down to restore to the initial state, and the hook 31 is removed. At this time, the mainspring 6 will drive the winding shaft 4 to reverse, thereby winding the traction rope 5, so that the stretched traction rope 5 is re-stored on the winding shaft 4.

[0070] When the thermal insulation performance testing device for thermal insulation pipe fittings provided by the present invention is used to test a large-scale thermal insulation pipe with a long length, the heat flow meter 32 can be moved along the axial direction of the thermal insulation pipe through the cooperation of the driving structure and the transmission structure, so as to detect the temperature at different positions of the thermal insulation pipe. Compared with the prior art, the thermal insulation performance testing device for thermal insulation pipe fittings provided by the present invention is not only very convenient in storage and carrying, but also can be conveniently adjusted in position during the test.

[0071] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A thermal insulation performance test device for thermal insulation pipes, characterized in that: It comprises a pipe (1) and a partition (2) fixedly connected to the middle of the pipe (1), winding shafts (4) are rotatably mounted on both sides of the partition (2), two ends of a traction rope (5) are respectively wound around the two winding shafts (4), a heat flow meter (32) for measuring temperature is connected to the traction rope (5) via a connecting structure, and a friction roller (9) is coaxially fixedly connected to the end surface of the winding shaft (4); Mounting plates (3) are fixedly connected to both end surfaces of the pipe (1), and transmission structures are respectively arranged on the two mounting plates (3) to rotate the two winding shafts (4), wherein the transmission structure comprises a rotating body (10) having a truncated cone-shaped thin-walled structure. For the rotating body (10): A first braking structure is provided on the inner wall of the rotating body (10) to brake the friction roller (9), the first braking structure comprising an inner sliding block (11), a plurality of inner sliding grooves (101) are provided on the inner wall of the rotating body (10) along the generatrix direction, the inner sliding block (11) is slidably fitted in the inner sliding groove (101), a first guide groove (12) is fixedly connected to the inner sliding block (11), a first brake block (14) is slidably fitted in the first guide groove (12), and a first spring (13) is provided on the first guide groove (12) to brake the first brake block (14) applying elastic force, a circular ring member (7) is sleeved on the winding shaft (4), a spring (6) is arranged inside the ring member (7), one end of the spring (6) is fixedly connected to the inner wall of the ring member (7), and the other end is fixedly connected to the winding shaft (4), a sleeve (8) with a cylindrical thin-walled structure is coaxially fixedly connected to the end surface of the ring member (7), a plurality of first notches (801) are radially opened on the sleeve (8), the first notches (801) correspond one-to-one to the inner slide groove (101), and the first brake block (14) is slidably fitted in the first notch (801); A second braking structure is provided on the outer wall of the rotating body (10) to brake the rotating body (10); The second braking structure comprises a rotating sleeve (19) of a cylindrical thin-walled structure, the rotating sleeve (19) being rotatably mounted on the end surface of the mounting plate (3), the rotating sleeve (19) being coaxially arranged with the rotating body (10), and the rotating sleeve (19) being sleeved on the rotating body (10), a plurality of second notches (20) being radially opened on the rotating sleeve (19), a plurality of outer slide grooves (102) being opened along the generatrix direction on the outer wall of the rotating body (10), the outer slide grooves (102) corresponding to the second notches (20) one by one, an outer slide block (15) slidingly cooperating in the outer slide groove (102), the outer slide block (15) 5) is fixedly connected with a second guide groove (16), a second brake block (18) is slidably engaged in the second guide groove (16), the second brake block (18) is slidably engaged in the second notch (20), the second guide groove (16) is fixedly connected with a second spring (17) to apply elastic force to the second brake block (18), a friction ring (21) is fixedly connected to the end surface of the mounting plate (3), the friction ring (21) is coaxially arranged with the rotating body (10), and the friction ring (21) is sleeved on the second brake block (18), and a driving structure is provided on the mounting plate (3) to drive the rotating body (10) to rotate; The traction rope (5) is rollingly fitted with a movable pulley (30), and a hook (31) is fixed on the movable pulley (30); The connection structure comprises a fastener (33) and a sliding sleeve (34), and both are fixedly connected to the heat flow meter (32), wherein the fastener (33) is fixedly connected to the traction rope (5), and the sliding sleeve (34) is slidably matched with the traction rope (5).

2. The thermal insulation performance test device for thermal insulation pipes according to claim 1, characterized in that: The driving structure comprises a rotating tube (24) and a connecting rod (23); the rotating tube (24) is rotatably mounted on the middle part of the mounting plate (3); a top plate (26) is fixedly connected to one end of the connecting rod (23); the top plate (26) is slidably fitted in the rotating tube (24); a key bar (29) is fixedly connected to the inner wall of the rotating tube (24); a key groove (28) is provided on the outer edge of the top plate (26); the key bar (29) is slidably fitted in the key groove (28); The other end of the connecting rod (23) is fixedly connected to a connecting plate (22), and the connecting plate (22) is fixedly connected to the rotating body (10).

3. The thermal insulation performance test device for thermal insulation pipes according to claim 2, characterized in that: The rotating tube (24) is provided with an axial displacement structure to drive the top plate (26) to move axially along the rotating tube (24). The axial displacement structure comprises a compression spring (25) and a rotating rod (27). The rotating shaft (35) is rotatably mounted on the rotating tube (24). The axial direction of the rotating shaft (35) coincides with the radial direction of the rotating tube (24). The rotating shaft (35) is fixedly connected with the rotating shaft (35) with an arc-shaped end. The distance between the end of the rotating rod (27) and the rotating shaft (35) is greater than the distance between the rotating shaft (35) and the top plate (26). The compression spring (25) is sleeved on the connecting rod (23) to apply elastic force to the top plate (26).

4. The thermal insulation performance test device for thermal insulation pipes according to claim 3, characterized in that: The winding directions of the traction ropes (5) on the two winding shafts (4) are the same.

5. The thermal insulation performance test device for thermal insulation pipes according to claim 3, characterized in that: When the friction roller (9) and the first brake block (14) are in contact, friction is generated; when the friction ring (21) and the second brake block (18) are in contact, friction is generated.

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