Electric preheating compensation device

Abstract

The utility model relates to the technical field of heat distribution pipelines, in particular to an electric preheating compensation device which comprises two symmetrically-arranged hollow cylinders, and further comprises a telescopic mechanism arranged between the two symmetrically-arranged cylinders, and an electric preheating compensation device arranged between the telescopic mechanism and the cylinders. The clamping mechanisms are arranged in the columns and on the side walls of the columns, each clamping mechanism comprises arc-shaped clamping blocks, the radians of the upper arc-shaped clamping block and the lower arc-shaped clamping block are equal to the outer wall and the inner diameter of the pipeline, in the extending process of the pipeline, the side walls of the two sides of the pipeline abut against the side walls of the columns on the two sides, and then the telescopic mechanisms are lengthened; through a series of transmission, the arc-shaped clamping blocks located above and below move relatively and are attached to the outer wall and the interior of the pipeline correspondingly, the pipeline can be clamped, an operator does not need to rotate a threaded sleeve manually in the process, the automatic clamping effect of the device is achieved, a large amount of manpower and material resources can be saved, and the working efficiency is improved. And uncertainty errors possibly existing in manual operation of people can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal pipelines, in particular to an electric preheating compensation device. Background Art

[0002] When installing thermal pipelines, in order to prevent the pipelines from being deformed due to thermal stress and causing damage to the pipelines, it is necessary to release the thermal stress of the pipelines in advance. In the prior art, the general practice is to preheat the pipelines in advance to release the thermal stress of the pipelines. When the pipelines are heated and elongated to the design value, sand is backfilled at both ends of the pipelines to prevent the pipelines from shrinking.

[0003] The patent with publication number CN214535056U discloses a large-diameter electric preheating compensation device, including a heating pipe and a heat return pipe, a heating block is arranged on the inner side of the heating pipe; the heating block and the heat return pipe are connected to the electric preheating device on the same side through a cable, and the heating block and the other side of the heat return pipe are connected through a short-circuit cable; a length detection device and a temperature sensor are respectively arranged at the ends of the heating pipe and the heat return pipe; a PLC controller and an alarm are embedded on the electric preheating device.

[0004] The above patent has the advantages of being able to compensate for the preset temperature and elongation at one time, automatically keep warm after reaching the preset elongation, and alarm to remind the operator for manual confirmation. At the same time, it can record the heating time, initial and final temperatures, initial and final elongation, and can also display whether it is qualified, and remind the operator whether to start again. However, during use, people need to manually rotate the threaded sleeve frequently, and when removing it, they still need to rotate the threaded sleeve while pressing the return air check valve. The overall use process involves too much manual work, wasting manpower and material resources.

[0005] In view of this situation, the purpose of the utility model is to provide an electric preheating compensation device to solve the problem that the threaded sleeve needs to be frequently rotated manually during use, and the return air check valve needs to be pressed while the threaded sleeve is rotated during removal, resulting in excessive manual work and waste of manpower and material resources during the overall use process. Utility Model Content

[0006] In view of the above problems, the present application provides an electric preheating compensation device, comprising a column, wherein the column has two columns, which are symmetrically arranged, and the column is a hollow structure, and further comprises:

[0007] A telescopic mechanism, wherein the telescopic mechanism is arranged between two symmetrically placed cylinders;

[0008] The clamping mechanism is arranged inside the column and on the side wall, and the clamping mechanism includes arc-shaped clamping blocks. There are four groups of arc-shaped clamping blocks, two in each group, and the arcs of the upper and lower groups of arc-shaped clamping blocks are respectively equal to the outer wall and the inner diameter of the pipeline, and the side walls of each group of arc-shaped clamping blocks are respectively in contact with the inner wall and the outer wall of the pipeline;

[0009] A locking mechanism is arranged in the column.

[0010] Specifically, the telescopic mechanism includes a scale rod, which is in the shape of a long strip. The clamping mechanism also includes a rod sleeve, the scale rod is slidably installed in the rod sleeve, the rod sleeve is slidably installed in one of the side walls of the column, and the end of the scale rod away from the rod sleeve is slidably installed on the side wall of the column on the same side. The lower surfaces of the ends of the scale rod and the rod sleeve located inside the column are both fixed with a first rack, the first rack is meshed with a first gear, and the first gear is rotatably installed on the inner wall of the column.

[0011] Specifically, there are two sets of rod sleeves and scale rods, which are respectively located above and below the two cylinders, and the side wall of the scale rod located above is engraved with length scales.

[0012] Specifically, each group of the arc-shaped clamping blocks located at the bottom is fixedly installed with a first slide at the end near the column, the first slide is slidably installed in the through hole, and can slide up and down, the upper surface of the first slide located inside the column is fixed with a second rack, the second rack is meshed with the first gear, the second rack is also meshed with a second gear, the second gear is rotatably installed on the inner wall of the column, the second gear is meshed with a third rack, the side wall of the third rack is fixedly installed with a second slide, the second slide is slidably installed in the through hole, and can slide up and down, and the end of the second slide outside the column is fixedly connected to the arc-shaped clamping block located above.

[0013] Specifically, T-shaped blocks are fixed to the side walls of the first slide plate and the second slide plate, a through hole is provided on the side wall of the column, a T-shaped slot is provided on the side wall of the through hole, and the T-shaped block is slidably installed in the T-shaped slot.

[0014] Specifically, the locking mechanism includes a fourth rack, which is fixed on the lower surface of the first slide board, and the fourth rack is meshed with a ratchet, which is rotatably installed on the side wall of the column, and a pawl is rotatably installed on the side wall of the column at the same time, and the ratchet and pawl are used in combination, and a torsion spring is installed on the side wall of the pawl, and the rotating shaft of the pawl extends through the side wall of the column and is fixed with a rotating handle.

[0015] Beneficial effects of the utility model:

[0016] (1) The electric preheating compensation device described in the utility model, during the process of extending the pipeline, the side walls of the pipeline will press against the side walls of the column on both sides, thereby stretching the telescopic mechanism. After a series of transmissions, the arc-shaped clamping blocks located above and below will move relatively to fit the outer wall and the interior of the pipeline respectively, so as to clamp the pipeline. In this process, there is no need for operators to manually rotate the threaded sleeve, and the automatic clamping effect of the device is achieved, which can save a lot of manpower and material resources and avoid the uncertainty errors that may exist during manual operation.

[0017] (2) The electric preheating compensation device described in the utility model can ensure that the locking of the pawl on the ratchet wheel is more rigorous through the setting of the torsion spring, so as to prevent the pawl from rotating and causing the ratchet wheel to rotate freely, thereby preventing the overall device from rotating and causing the arc clamping block to fail to clamp the pipe. After the operation is completed, the rotating handle can be rotated to drive the pawl to rotate, thereby releasing the clamping state of the overall device on the pipe. The overall device is easy to use and easy to disassemble. During the overall operation process, the only time the rotating handle needs to be manually rotated is when the device is dismantled. The rest of the operation is fully automatic, saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of an electric preheating compensation device provided by the utility model;

[0020] Figure 2 A schematic diagram of a rod sleeve of an electric preheating compensation device provided by the utility model;

[0021] Figure 3 A schematic diagram of a clamping mechanism of an electric preheating compensation device provided by the utility model;

[0022] Figure 4 This is an enlarged schematic diagram of a locking mechanism of an electric preheating compensation device provided by the utility model;

[0023] Figure 5 An electric preheating compensation device provided by the utility model Figure 4 Enlarged schematic diagram at point A in the middle.

[0024] In the figure: 1. column; 11. pipe; 2. telescopic mechanism; 21. scale rod; 22. first rack; 23. first gear; 24. rod sleeve; 3. clamping mechanism; 31. arc clamping block; 32. first slide plate; 33. second rack; 34. second gear; 35. third rack; 36. second slide plate; 37. T-block; 4. locking mechanism; 41. fourth rack; 42. ratchet; 43. pawl; 44. torsion spring; 45. rotating handle. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figure 1-Figure 5 As shown, the electric preheating compensation device described in the utility model includes a column 1, wherein the column 1 has two columns 1 and is symmetrically arranged. The column 1 is a hollow structure and further includes:

[0027] A telescopic mechanism 2, wherein the telescopic mechanism 2 is arranged between two symmetrically placed columns 1;

[0028] The clamping mechanism 3 is arranged inside the column 1 and on the side wall. The clamping mechanism 3 includes arc-shaped clamping blocks 31. There are four groups of arc-shaped clamping blocks 31, two in each group. The arcs of the upper and lower groups of arc-shaped clamping blocks 31 are respectively equal to the outer wall and the inner diameter of the pipe 11. The side walls of each group of arc-shaped clamping blocks 31 are respectively in contact with the inner wall and the outer wall of the pipe 11.

[0029] The locking mechanism 4 is arranged in the column 1 .

[0030] During the elongation of the pipe 11, the side walls of the pipe 11 will press against the side walls of the column 1 on both sides, thereby stretching the telescopic mechanism 2. After a series of transmissions, the arc-shaped clamping blocks 31 located above and below will move relatively to fit the outer wall and the interior of the pipe 11 respectively, so as to clamp the pipe 11. This process does not require the operator to manually rotate the threaded sleeve, thereby achieving the effect of automatic clamping of the device, saving a lot of manpower and material resources, and avoiding possible uncertainty errors during manual operation. At the same time, the locking mechanism 4 can lock the advancement in real time to avoid the failure of clamping the pipe 11 due to the rotation of the entire device.

[0031] Specifically, the telescopic mechanism 2 includes a scale rod 21, which is in the shape of a long strip. The clamping mechanism 3 also includes a rod sleeve 24. The scale rod 21 is slidably installed in the rod sleeve 24, and the rod sleeve 24 is slidably installed on one of the side walls of the column 1. The end of the scale rod 21 away from the rod sleeve 24 is slidably installed on the side wall of the column 1 on the same side. The lower surfaces of the ends of the scale rod 21 and the rod sleeve 24 located inside the column 1 are fixed with a first rack 22, and the first rack 22 is meshed with a first gear 23, and the first gear 23 is rotatably installed on the inner wall of the column 1.

[0032] Specifically, there are two sets of rod sleeves 24 and scale rods 21, which are respectively located above and below the two columns 1. The side wall of the scale rod 21 located above is engraved with length scales, and the elongation of the pipeline 11 can be visually observed through the scales.

[0033] Specifically, each group of the arc-shaped clamping blocks 31 located at the bottom is fixedly installed with a first slide plate 32 at the end near the column 1, and the first slide plate 32 is slidably installed in the through hole and can slide up and down. The upper surface of the first slide plate 32 located inside the column 1 is fixed with a second rack 33, and the second rack 33 is meshed with the first gear 23. The second rack 33 is also meshed with a second gear 34, and the second gear 34 is rotatably installed on the inner wall of the column 1. The second gear 34 is meshed with a third rack 35, and the side wall of the third rack 35 is fixedly installed with a second slide plate 36, and the second slide plate 36 is slidably installed in the through hole and can slide up and down. The end of the second slide plate 36 located outside the column 1 is fixedly connected to the arc-shaped clamping block 31 located above.

[0034] The pipe 11 is extended and pressed against the push column 1, and the telescopic mechanism 2 is extended, causing the first rack 22 to slide, driving the first gear 23 meshing with the first rack 22 to rotate. The rotation of the first gear 23 will drive the second rack 33 to rotate, and then the second rack 33 drives the first slide plate 32 to move upward. The second rack 33 also drives the second gear 34 meshing with the second rack 33 to rotate, thereby driving the third gear to move, and then driving the second slide plate 36 to move. Since the second rack 33 and the third rack 35 are respectively meshed in opposite directions with the second gear 34, the first slide plate 32 and the second slide plate 36 move in opposite directions to achieve clamping of the pipe 11.

[0035] Specifically, T-shaped blocks 37 are fixed to the side walls of the first slide plate 32 and the second slide plate 36, a through hole is provided on the side wall of the column 1, a T-shaped slot is provided on the side wall of the through hole, and the T-shaped block 37 is slidably installed in the T-shaped slot. The coordinated use of the T-shaped slot and the T-shaped block 37 can make the sliding process of the first slide plate 32 and the second slide plate 36 more stable, thereby ensuring an excellent clamping effect on the pipe 11.

[0036] Specifically, the locking mechanism 4 includes a fourth rack 41, and the fourth rack 41 is fixed on the lower surface of the first slide plate 32. The fourth rack 41 is meshed with a ratchet 42, and the ratchet 42 is rotatably installed on the side wall of the column 1. The side wall of the column 1 is also rotatably installed with a pawl 43, and the ratchet 42 and the pawl 43 are used in combination. A torsion spring 44 is installed on the side wall of the pawl 43, and the rotating shaft of the pawl 43 extends through the side wall of the column 1 and is fixed with a rotating handle 45.

[0037] The setting of the torsion spring 44 can ensure that the pawl 43 locks the ratchet 42 more strictly, preventing the pawl 43 from rotating and causing the ratchet 42 to rotate freely, thereby preventing the entire device from rotating, causing the arc clamping block 31 to fail to clamp the pipe 11. The turning handle can facilitate the dismantling operation of the entire device.

[0038] Working principle: During operation, the device is placed on both sides of the pipe 11 to be compensated. The pipe 11 is extended to push the column 1, and the telescopic mechanism 2 is extended, causing the first rack 22 to slide, driving the first gear 23 meshing with the first rack 22 to rotate. The rotation of the first gear 23 will drive the second rack 33 to rotate, and then the second rack 33 drives the first slide plate 32 to move upward. The second rack 33 also drives the second gear 34 meshing with the second rack 33 to rotate, thereby driving the third gear to move, and then driving the second slide plate 36 to move. Since the second rack 33 and the third rack 35 are respectively meshed in opposite directions with the second gear 34, the first slide plate 32 and the second slide plate 36 move in opposite directions to achieve clamping of the pipe 11.

[0039] It should be mentioned that during this process, the ratchet 42 and the pawl 43 are always in a coordinated use state to realize the locking effect of the overall device. After the operation is completed, the rotating handle 45 is rotated to drive the pawl 43 to rotate, thereby allowing the overall device to release the clamping state of the pipe 11. The overall device is easy to use and easy to disassemble. The entire operation process only requires manual rotation of the rotating handle 45 when dismantling the device, and the rest is fully automatic, saving manpower.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. An electric preheating compensation device, comprising a column (1), wherein the column (1) has two columns and is symmetrically arranged, and is characterized in that: The column (1) is a hollow structure and further comprises: A telescopic mechanism (2), wherein the telescopic mechanism (2) is arranged between two symmetrically placed columns (1); A clamping mechanism (3), wherein the clamping mechanism (3) is arranged inside the column (1) and on the side wall, and the clamping mechanism (3) comprises arc-shaped clamping blocks (31). There are four groups of arc-shaped clamping blocks (31), each group having two, and the arcs of the upper and lower groups of arc-shaped clamping blocks (31) are respectively equal to the outer wall and the inner diameter of the pipe (11), and the side walls of each group of arc-shaped clamping blocks (31) are respectively in contact with the inner wall and the outer wall of the pipe (11); A locking mechanism (4), wherein the locking mechanism (4) is arranged inside the column (1).

2. An electric preheating compensation device according to claim 1, characterized in that: The telescopic mechanism (2) comprises a scale rod (21), the scale rod (21) is in the shape of a long strip, the clamping mechanism (3) further comprises a rod sleeve (24), the scale rod (21) is slidably mounted in the rod sleeve (24), the rod sleeve (24) is slidably mounted on one of the side walls of the column (1), the end of the scale rod (21) away from the rod sleeve (24) is slidably mounted on the side wall of the column (1) on the same side, the lower surfaces of the ends of the scale rod (21) and the rod sleeve (24) located inside the column (1) are both fixed with a first rack (22), the first rack (22) is meshed with a first gear (23), and the first gear (23) is rotatably mounted on the inner wall of the column (1).

3. An electric preheating compensation device according to claim 2, characterized in that: There are two sets of rod sleeves (24) and scale rods (21), which are respectively located above and below the two columns (1); the side wall of the scale rod (21) located above is engraved with length scales.

4. The electric preheating compensation device according to claim 2, characterized in that: Each group of the arc-shaped clamping blocks (31) located at the bottom is fixedly mounted with a first slide plate (32) at the end close to the column (1); the first slide plate (32) is slidably mounted in the through hole and can slide up and down; a second rack (33) is fixedly mounted on the upper surface of the first slide plate (32) located inside the column (1); the second rack (33) is meshed with the first gear (23); the second rack (33) is also meshed with a second gear (34); the second gear (34) is rotatably mounted on the inner wall of the column (1); the second gear (34) is meshed with a third rack (35); a second slide plate (36) is fixedly mounted on the side wall of the third rack (35); the second slide plate (36) is slidably mounted in the through hole and can slide up and down; the end of the second slide plate (36) located outside the column (1) is fixedly connected to the arc-shaped clamping block (31) located at the top.

5. The electric preheating compensation device according to claim 4, characterized in that: The side walls of the first slide plate (32) and the second slide plate (36) are both fixed with T-shaped blocks (37), the side walls of the column (1) are provided with through holes, the side walls of the through holes are provided with T-shaped grooves, and the T-shaped blocks (37) are slidably installed in the T-shaped grooves.

6. The electric preheating compensation device according to claim 4, characterized in that: The locking mechanism (4) comprises a fourth rack (41), the fourth rack (41) being fixed on the lower surface of the first slide plate (32), the fourth rack (41) being meshed with a ratchet (42), the ratchet (42) being rotatably mounted on the side wall of the column (1), the side wall of the column (1) being simultaneously rotatably mounted with a pawl (43), the ratchet (42) and the pawl (43) being used in coordination, the side wall of the pawl (43) being mounted with a torsion spring (44), the rotating shaft of the pawl (43) extending through the side wall of the column (1) and being fixed with a rotating handle (45).

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