CN216483788U

CN216483788U - Welding seam detector for double-pipe heat exchanger

Info

Publication number: CN216483788U
Application number: CN202220058029.5U
Authority: CN
Inventors: 董泗惠; 董展
Original assignee: Shandong Kanglu Energy Saving Equipment Co ltd
Current assignee: Shandong Kanglu Energy Saving Equipment Co ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-05-10
Anticipated expiration: 2032-01-11

Abstract

The utility model relates to a weld seam detector of a sleeve type heat exchanger, which comprises a pipeline and a vertical plate, wherein the vertical plate is provided with a clamping device, an adjusting device and a detecting device, the clamping device comprises a first support, an outer hoop, an inner hoop, three threaded sleeves and three threaded rods, wherein the inner hoop is arranged on the first support, one side of the outer hoop is rotatably connected with the inner hoop, the other side of the outer hoop is connected with the inner hoop through bolts, wherein two of the screw sleeves are arranged on the inner hoop, the other screw sleeve is arranged on the outer hoop, three screw rods are arranged, and respectively with three swivel nut threaded connection, the utility model discloses in through setting up clamping device, inwards rotate three screw rod along the swivel nut, on the interior terminal surface of up to three screw rod was in the outer wall of pipeline, rotate outer clamp and open, put the pipeline including in the clamp, be convenient for press from both sides tightly the pipeline of different pipe diameters.

Description

Welding seam detector for double-pipe heat exchanger

Technical Field

The utility model relates to a welding seam detection device technical field specifically is a double pipe heat exchanger welding seam detector.

Background

The double-pipe heat exchanger is a concentric sleeve formed by connecting two standard pipes with different sizes, wherein the outside is called a shell side, and the inside is called a pipe side. The two different media can flow in the shell side and the tube side in the opposite directions (or in the same direction) to achieve the effect of heat exchange. When the inner tube pass is used, the welding seam is easy to crack due to thermal expansion, so that the welding seam inspection is needed. When the welding seam detection is carried out, whether the pipeline cracks or not can be judged by introducing gas with certain air pressure into the pipeline and observing the change of the air pressure value.

The nondestructive testing device for the circumferential weld of the pipeline has a patent number of CN202020729821.X, and when the nondestructive testing device is used, the snakelike pipeline cannot be clamped; in addition, some detection device though can carry out the centre gripping to serpentine pipe, nevertheless can't adjust according to serpentine pipe's different intervals, also can't adjust according to serpentine pipe's length, the utility model discloses a new solution is proposed to above problem.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To the problem that exists among the prior art, the utility model provides a double pipe heat exchanger welding seam detector to solve the technical problem who mentions in the background art.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a casing pipe type heat exchanger welding seam detector comprises a pipeline and a vertical plate, wherein a clamping device, an adjusting device and a detecting device are arranged on the vertical plate, the clamping device comprises a first support, an outer clamp, an inner clamp, threaded sleeves and screw rods, the inner clamp is arranged on the first support, one side of the outer clamp is rotatably connected with the inner clamp, the other side of the outer clamp is connected with the inner clamp through bolts, the number of the threaded sleeves is three, two of the threaded sleeves are arranged on the inner clamp, the other threaded sleeve is arranged on the outer clamp, the number of the screw rods is three and is respectively in threaded connection with the three threaded sleeves, the pipeline is arranged in a snake shape, straight-line segments are arranged in the outer clamp and the inner clamp, the three screw rods are in fit with the pipeline, the detecting device comprises a sealing head and an end cover, the sealing head is slidably arranged in the pipeline and is in fit with the inner wall of the pipeline, the end cover is connected with the end socket and is attached to one end of the pipeline, and air inlet channels are arranged in the end socket and the end cover.

Preferably, the adjusting device comprises a first adjusting mechanism and a second adjusting mechanism, the first adjusting mechanism comprises a first motor, a first lead screw, a first bearing seat, two first movable plates and a baffle, the first motor is arranged on one side of the vertical plate, the two first bearing seats are respectively and rotatably connected with two ends of the first lead screw and fixedly connected with the vertical plate, the first movable plates are sleeved outside the first lead screw in a threaded manner, and the baffle is arranged on the first movable plates. This design can be convenient for drive first lead screw through first motor and rotate, and then drives first movable plate and remove to the pipeline, can carry on spacingly through pipeline and baffle laminating to the pipeline.

Preferably, the second adjusting mechanism includes a second motor, a second screw, two second bearing blocks and a second moving plate, the two second bearing blocks are respectively and rotatably sleeved at two ends of the second screw and fixedly connected to the vertical plate, a motor shaft of the second motor is connected to the second screw, the second moving plate is threadedly sleeved outside the second screw, and the first support is connected to the second moving plate. This design can be convenient for drive the second lead screw through the second motor and rotate, and then drive the second movable plate and remove.

Preferably, a second support is arranged on the second moving plate, a double-rod cylinder is arranged on the second support, and the telescopic end of the double-rod cylinder is connected with the end cover through a bolt. This design can be convenient for drive the end cover through two pole cylinders and remove, makes head and pipeline cooperation.

Preferably, the clamping device and the second moving plates are respectively provided with two first brackets which are respectively connected with the two second moving plates, the two second moving plates are respectively sleeved on the second lead screw in a threaded manner, and the thread directions at two ends of the second lead screw are opposite. The design can be convenient for

Preferably, the end sockets, the end covers, the second supports and the double-rod air cylinders are all provided with two, the two second supports are respectively arranged on the two second moving plates, and the two end sockets are respectively matched with two ends of the pipeline. This design can be convenient for seal the both ends of pipeline.

In a further preferred mode, a first dovetail block is arranged on one side of the first moving plate, and a first dovetail groove matched with the first dovetail block is arranged on the vertical plate. This design can be convenient for lead and spacing to first movable plate.

In a further preferred mode, a second dovetail block is arranged on one side of the second moving plate, and a second dovetail groove matched with the second dovetail block is arranged on the vertical plate. This design can be convenient for lead and spacing to the second movable plate.

In a further preferred embodiment, a graduated scale is provided on the outside of the threaded sleeve. This design can be convenient for observe the displacement of screw rod.

(III) advantageous effects

Compared with the prior art, the utility model provides a double pipe heat exchanger welding seam detector possesses following beneficial effect:

1. in the utility model, the three screw rods are rotated inwards along the threaded sleeves by arranging the clamping device until the inner end surfaces of the three screw rods are positioned on the outer wall surface of the pipeline, the outer clamp is rotated and opened, and the pipeline is placed in the inner clamp, so that the pipelines with different pipe diameters can be clamped conveniently;

2. by arranging the adjusting device, the utility model can be convenient to drive the second screw rod to rotate through the second motor, and further drive the two second moving plates to move, so that the distance between the two clamping devices is equal to the distance between the two ends of the pipeline, and the two clamping devices are convenient to clamp the pipeline;

3. the utility model discloses in through setting up detection device, can be through the external air pump of inlet channel, through head and pipe fitting, ventilate in to the pipeline through the inlet channel, judge whether there is the gas leakage phenomenon according to atmospheric pressure change.

Drawings

Fig. 1 is a schematic view of the overall structure of a weld joint detector for a double pipe heat exchanger according to the present invention;

FIG. 2 is a schematic view of the detecting device of the present invention;

fig. 3 is a schematic structural view of the middle clamping device of the present invention.

In the figure: 1. a pipeline; 2. a vertical plate; 3. a first bracket; 4. an outer hoop; 5. an inner hoop; 6. a threaded sleeve; 7. a screw; 8. sealing the end; 9. an end cap; 10. an air intake passage; 11. a first motor; 12. a first lead screw; 13. a first bearing housing; 14. a first moving plate; 15. a baffle plate; 16. a second motor; 17. a second lead screw; 18. a second bearing housing; 19. a second moving plate; 20. a second bracket; 21. a double-rod cylinder; 22. a first dovetail block; 23. a first dovetail groove; 24. a second dovetail block; 25. a second dovetail groove; 26. a graduated scale.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to fig. 1-3, a casing pipe heat exchanger weld seam detector comprises a pipe 1 and a vertical plate 2, wherein the vertical plate 2 is provided with a clamping device, an adjusting device and a detecting device, the clamping device comprises a first support 3, an outer clamp 4, an inner clamp 5, three screw sleeves 6 and screws 7, the inner clamp 5 is arranged on the first support 3, one side of the outer clamp 4 is rotatably connected with the inner clamp 5, the other side of the outer clamp is connected with the inner clamp 5 through bolts, the three screw sleeves 6 are arranged, two screw sleeves 6 are arranged on the inner clamp 5, the other screw sleeve 6 is arranged on the outer clamp 4, the three screws 7 are respectively in threaded connection with the three screw sleeves 6, the pipe 1 is in a snake shape, straight lines are arranged in the outer clamp 4 and the inner clamp 5, the three screws 7 are attached to the pipe 1, the detecting device comprises an end enclosure 8 and an end cover 9, the end enclosure 8 is slidably arranged in the pipe 1, and the end cover 9 is connected with the end cover 8 and is attached to one end of the pipeline 1, and air inlet channels 10 are arranged in the end cover 8 and the end cover 9. And a graduated scale 26 is arranged on the outer side of the screw sleeve 6.

In this embodiment, the adjusting device includes a first adjusting mechanism and a second adjusting mechanism, the first adjusting mechanism includes a first motor 11, a first lead screw 12, a first bearing seat 13, a first moving plate 14 and a baffle 15, the first motor 11 is disposed on one side of the vertical plate 2, the first bearing seat 13 is provided with two parts, and is rotatably connected with two ends of the first lead screw 12 respectively, and is fixedly connected with the vertical plate 2, the first moving plate 14 is screwed on the outside of the first lead screw 12, and the baffle 15 is disposed on the first moving plate 14. One side of the first moving plate 14 is provided with a first dovetail block 22, and the vertical plate 2 is provided with a first dovetail groove 23 matched with the first dovetail block. When the device is used, the first motor 11 is started to drive the first lead screw 12 to rotate, and further drive the first moving plate 14 to move along the direction of the first dovetail groove 23 until the baffle 15 moves to a proper position.

In this embodiment, the second adjusting mechanism includes a second motor 16, a second screw 17, a second bearing block 18 and a second moving plate 19, the second bearing block 18 is provided with two, and is respectively and rotatably sleeved at two ends of the second screw 17, and is both fixedly connected to the vertical plate 2, a motor shaft of the second motor 16 is connected to the second screw 17, the second moving plate 19 is threadedly sleeved outside the second screw 17, and the first bracket 3 is connected to the second moving plate 19. One side of the second moving plate 19 is provided with a second dovetail block 24, and the vertical plate 2 is provided with a matched second dovetail groove 25. The clamping devices and the second moving plates 19 are arranged in two numbers, the two first supports 3 are respectively connected with the two second moving plates 19, the two second moving plates 19 are sleeved on the second screw rod 17 in a threaded mode, and the thread directions of the two ends of the second screw rod 17 are opposite. In use, the second motor 16 is started to drive the second lead screw 17 to rotate, and further drive the two second moving plates 19 to move towards the middle or both sides along the second dovetail groove 25 simultaneously, so that the distance between the two sets of clamping devices is equal to the distance between the two ends of the pipeline 1.

In this embodiment, the second moving plate 19 is provided with a second bracket 20, the second bracket 20 is provided with a double-rod cylinder 21, and the telescopic end of the double-rod cylinder 21 is connected with the end cover 9. The two end sockets 8, the two end covers 9, the two second supports 20 and the two rod cylinders 21 are arranged, the two second supports 20 are arranged on the two second moving plates 19 respectively, and the two end sockets 8 are matched with the two ends of the pipeline 1 respectively. When the double-rod air cylinder is used, the double-rod air cylinder 21 is started to drive the end cover 9 to move, the end cover 8 is inserted into the pipeline 1 and attached to the inner wall of the pipeline 1, the end cover 9 is attached to the end face of the pipeline 1, and sealing of two ends of the pipeline 1 is achieved.

Example 2:

in summary, when the pipeline 1 is set to have a serpentine shape, the first motor 11 is started to drive the first lead screw 12 to rotate, and further drive the first moving plate 14 to move along the direction of the first dovetail groove 23 until the baffle 15 moves to a proper position, the second motor 16 is started to drive the second lead screw 17 to rotate, and further drive the two second moving plates 19 to simultaneously move towards the middle or both sides along the second dovetail groove 25, so that the distance between the two sets of clamping devices is equal to the distance between the two ends of the pipeline 1.

Example 3:

in conclusion, when the pipeline clamping device is used, the three screws 7 are rotated according to the diameter of the pipeline 1 to rotate inwards along the screw sleeve 6, the moving distance of the three screws 7 is observed through the graduated scale 26 until the inner end faces of the three screws 7 are positioned on the outer wall face of the pipeline 1, the outer hoop 4 is rotated to be opened, the pipeline 1 is placed in the inner hoop 5, the outer wall of the pipeline 1 is attached to the two screws 7 of the inner hoop 5, meanwhile, one side of the pipeline 1 is attached to the baffle 15, the outer hoop 4 is rotated to be closed, the screws 7 on the outer hoop 4 are attached to the outer wall of the pipeline 1, the outer hoop 4 is connected with the inner hoop 5 through bolts, the pipeline 1 is clamped, and pipelines 1 with different diameters can be clamped conveniently; when the detection is needed, the two double-rod cylinders 21 are started to drive the end covers 9 to move, the seal heads 8 are inserted into the pipeline 1 to be attached to the inner wall of the pipeline 1, the end covers 9 are attached to the end face of the pipeline 1, the two ends of the pipeline 1 are sealed, the air inlet channel 10 is connected with an external air pump, gas with certain air pressure is introduced into the pipeline 1, and whether cracks exist in welding seams of the pipeline 1 is judged by observing the change of the air pressure value.

In all the above-mentioned embodiments, the connection between two components may be selected from welding, bolt and nut fit connection, bolt or screw connection or other known connection methods according to actual situations, which are not repeated herein, and it is preferable to consider welding in the above description, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a double pipe heat exchanger welding seam detector, includes pipeline (1) and riser (2), its characterized in that: the vertical plate (2) is provided with a clamping device, an adjusting device and a detecting device, the clamping device comprises a first support (3), an outer clamp (4), an inner clamp (5), screw sleeves (6) and screw rods (7), the inner clamp (5) is arranged on the first support (3), one side of the outer clamp (4) is rotatably connected with the inner clamp (5), the other side of the outer clamp (4) is connected with the inner clamp (5) through bolts, the number of the screw sleeves (6) is three, two of the screw sleeves (6) are arranged on the inner clamp (5), the other screw sleeve (6) is arranged on the outer clamp (4), the number of the screw rods (7) is three, the screw sleeves (6) are respectively in threaded connection with the three screw sleeves (6), the pipeline (1) is arranged in a snake shape, straight line segments are arranged in the outer clamp (4) and the inner clamp (5), and the screw rods (7) are attached to the pipeline (1), detection device includes head (8) and end cover (9), head (8) slidable ground sets up in pipeline (1), and laminate with pipeline (1) inner wall, end cover (9) and head (8) are connected, and laminate with the one end of pipeline (1), all be equipped with inlet channel (10) in head (8) and end cover (9).

2. The weld detector of the double pipe heat exchanger according to claim 1, wherein: the adjusting device comprises a first adjusting mechanism and a second adjusting mechanism, the first adjusting mechanism comprises a first motor (11), a first lead screw (12), a first bearing seat (13), a first moving plate (14) and a baffle (15), the first motor (11) is arranged on one side of the vertical plate (2), the first bearing seat (13) is provided with two parts, the two parts are respectively rotatably connected with the two ends of the first lead screw (12) and fixedly connected with the vertical plate (2), the first moving plate (14) is sleeved outside the first lead screw (12) in a threaded manner, and the baffle (15) is arranged on the first moving plate (14).

3. The weld detector of the double pipe heat exchanger according to claim 2, wherein: the second adjusting mechanism comprises a second motor (16), a second lead screw (17), a second bearing seat (18) and a second moving plate (19), the number of the second bearing seats (18) is two, the second bearing seats are respectively and rotatably sleeved at two ends of the second lead screw (17) and are fixedly connected with the vertical plate (2), a motor shaft of the second motor (16) is connected with the second lead screw (17), the second moving plate (19) is in threaded sleeve connection outside the second lead screw (17), and the first support (3) is connected with the second moving plate (19).

4. The weld detector of the double pipe heat exchanger according to claim 3, wherein: and a second support (20) is arranged on the second moving plate (19), a double-rod cylinder (21) is arranged on the second support (20), and the telescopic end of the double-rod cylinder (21) is connected with the end cover (9).

5. The weld detector of the double pipe heat exchanger according to claim 3, wherein: the clamping device and the second movable plate (19) are both provided with two, the first supports (3) are respectively connected with the two second movable plates (19), the two second movable plates (19) are all sleeved on the second lead screw (17) in a threaded manner, and the thread directions of two ends of the second lead screw (17) are opposite.

6. The weld detector of the double pipe heat exchanger according to claim 4, wherein: the two end sockets (8), the end covers (9), the second supports (20) and the double-rod air cylinders (21) are arranged, the second supports (20) are arranged on the second moving plates (19) respectively, and the two end sockets (8) are matched with the two ends of the pipeline (1) respectively.

7. The weld detector of the double pipe heat exchanger according to claim 2, wherein: one side of the first moving plate (14) is provided with a first dovetail block (22), and the vertical plate (2) is provided with a first dovetail groove (23) matched with the first dovetail block.

8. The weld detector of the double pipe heat exchanger according to claim 3, wherein: one side of the second moving plate (19) is provided with a second dovetail block (24), and the vertical plate (2) is provided with a second dovetail groove (25) matched with the vertical plate.

9. The weld detector of the double pipe heat exchanger according to claim 1, wherein: and a graduated scale (26) is arranged on the outer side of the threaded sleeve (6).