CN217620396U

CN217620396U - Pipe penetrating device

Info

Publication number: CN217620396U
Application number: CN202221457088.6U
Authority: CN
Inventors: 姜建伟; 邱雄政; 鲍丹阳; 黄涛; 郭潇潇
Original assignee: Zhenhai Petrochemical Construction And Installation Engineering Co ltd
Current assignee: Zhenhai Petrochemical Construction And Installation Engineering Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-10-21
Anticipated expiration: 2032-06-09

Abstract

A tube penetrator comprising: the sleeve (1) is provided with a first end part (11) and a second end part (12) which are opposite, and the first end part (11) is provided with an expansion head (2) which can be radially expanded relative to the sleeve under the action of external force; a telescopic rod (3) movably inserted in the sleeve and having a head portion (31) engaged with the expansion head and a tail portion (32) opposed to the second end portion of the sleeve, the telescopic rod (3) being movable to a first position where the head portion (31) acts on the expansion head (2) to open the expansion head (2) and a second position where the action on the expansion head (2) is released to restore the expansion head (2); and the output end of the driving device (4) is connected with the tail part (32) of the telescopic rod (3) and is used for driving the telescopic rod (3) to move to the first position or the second position. Compared with the prior art, the heat exchange tube and the tube plate assembly are used for improving the assembly efficiency and quality.

Description

Pipe penetrating device

Technical Field

The utility model belongs to the technical field of the heat exchanger, concretely relates to a poling ware that is arranged in heat exchange tube and tube sheet group to in heat exchanger.

Background

In the existing heat exchanger, in order to support the end portions of the heat exchange tubes on the tube plate, through holes matched with the sizes of the tube openings at the end portions of the heat exchange tubes are formed in the plate surface of the tube plate, the end portions of the heat exchange tubes face the plate surface of the tube plate and are aligned with the edges of the corresponding through holes to complete assembly, and then the end portions of the heat exchange tubes are fixed on the tube plate in a welding mode.

The tube penetrating device is used for realizing the assembly between the end part of each heat exchange tube and the tube plate.

Most of the existing tube-penetrating devices are in a manual mode, namely after the manual tube-penetrating device is inserted from the outer side of a tube plate, a tube is fixed from the inner side of the tube plate to complete assembly, and the assembly method in the mode has the following problems:

1. the group is to inefficiency, and every heat exchange tube and tube sheet through-hole group are to the in-process, all need the degree of depth that the tube penetrator inserted the heat exchange tube of manual adjustment, and because the heat exchange tube has the characteristic of resilience, the tube sheet both sides all need the manpower to fix, consequently the group needs more manpower to the operation, and consuming time longer.

2. The assembly quality is poor, the size of the manual pipe penetrating device is slightly smaller than the size of a pipe orifice at the end part of the heat exchange pipe, after the assembly is completed, the end part of the heat exchange pipe and the through hole of the pipe plate are not completely aligned to cause deviation between the end part of the heat exchange pipe and the through hole, the requirement on the operation level of workers is high, and the operation skill and the work experience of the workers are depended.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide a poling ware that is used for heat exchange tube and tube sheet group to right to improve group to efficiency and quality.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a rodding device, comprising:

the sleeve is provided with a first end part and a second end part which are opposite, and the first end part is provided with an expansion head which can radially expand relative to the sleeve under the action of external force;

a telescopic rod movably inserted in the sleeve and having a head portion fitted to the expansion head and a tail portion opposed to the second end portion of the sleeve, the telescopic rod being movable to a first position where the head portion thereof acts on the expansion head to open the expansion head and a second position where the action on the expansion head is released to restore the expansion head;

and the output end of the driving device is connected with the tail part of the telescopic rod and is used for driving the telescopic rod to move to the first position or the second position.

Preferably, the expansion head is a tubular body arranged coaxially with the sleeve, the tubular body is provided with a first tubular body relatively close to the sleeve and a second tubular body relatively far away from the sleeve in the length direction, the pipe diameter of the first tubular body is smaller than that of the second tubular body, and in the first position, the head of the telescopic rod is positioned in the first tubular body and radially expands the first tubular body and the second tubular body; and under the second position, the head of the telescopic rod is positioned in the second pipe body to reset the first pipe body and the second pipe body.

For when making the head of telescopic link be located first body, first, the second body can radially expand, preferably, be equipped with a plurality of first bar holes on the perisporium of siphonozooid, a plurality of first bar holes are arranged along the circumference interval of siphonozooid, and the both ends in every first bar hole run through first, the second body along length direction. So, the setting in a plurality of first bar holes makes first, second body radially open.

Preferably, the tubular body still has the third body in length direction, third body, second body are located the both sides of first body respectively, and the pipe diameter of third body, second body is unanimous to make the tubular body be the big structure in middle of two, the third body links to each other with sheathed tube first end simultaneously.

Furthermore, a plurality of second strip-shaped holes are further formed in the peripheral wall of the tubular body, the second strip-shaped holes are arranged at intervals along the circumferential direction of the tubular body and are alternately distributed with the first strip-shaped holes, and two ends of each second strip-shaped hole penetrate through the first tube body and the third tube body along the length direction.

In the above solution, in order to enable the telescopic rod to move to drive the expansion head to open better, preferably, at least a part of the head of the telescopic rod is in a circular truncated cone shape, a small end of the head is connected with the telescopic rod, and a large end of the head protrudes radially relative to the telescopic rod. So, be convenient for the head of telescopic link to move to in the first body by the second body. And in the process that the head of the telescopic rod is moved into the first pipe body by the second pipe body, the round platform-shaped structure can gradually open the expansion head, the opening degree of the expansion head can be controlled by controlling the depth of the round platform-shaped head of the telescopic rod extending into the first pipe body, and then the pipe penetrating device applied is suitable for heat exchange pipes with different pipe diameters.

In each of the above solutions, preferably, the driving device is a cylinder, and a piston of the cylinder is connected to a tail portion of the telescopic rod. Besides, the driving device can also adopt a hydraulic cylinder, a motor drive and the like.

In each of the above aspects, it is preferable that a stopper is further included, which is connected to the outer peripheral wall of the sleeve and is disposed adjacent to the second end of the sleeve. So, when each heat exchange tube was organized with the through-hole phase that corresponds on the tube sheet, the sleeve pipe in the perforating device passed the tube sheet and stretched into the heat exchange tube, until the locating part on the sleeve pipe offset with the face of tube sheet can, so, every tube sheet only need adjust the relative tube sheet of sleeve pipe inserted position once, follow-up need not to adjust sheathed tube depth of insertion, directly with the sleeve pipe insert to suitable position and make spacing piece offset with the face of tube sheet can, further improve group to efficiency and quality.

In order to adjust the position of the limiting member, the limiting member is preferably a nut and is in threaded connection with the outer peripheral wall of the sleeve.

Compared with the prior art, the utility model has the advantages of: through designing the poling ware for having the sleeve pipe, the telescopic link, drive arrangement's structure, drive arrangement can order about the telescopic link and remove to its head and act on the expansion head and make the expanded head open primary importance, or remove the effect to the expansion head and make the second place that the expansion head resets, under the second place, stretch into in the heat exchange tube behind the through-hole on the sheathed tube expansion head accessible tube sheet, then remove the telescopic link to the primary importance, at this moment, the expansion head can be hugged closely with the heat exchange tube inner wall after opening, align between the through-hole of heat exchange tube tip and tube sheet, and then improve heat exchange tube and tube sheet group to quality, efficiency. And the driving device can enable the telescopic piece to be maintained at the first position or the second position, particularly under the first position, the end part of the heat exchange tube can be in a state of being aligned with the through hole in the tube plate, and then the two sides of the tube plate can be fixed without manpower.

Drawings

Fig. 1 is a cross-sectional view of an embodiment of the present invention (the telescoping rod in a second position);

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a cross-sectional view of an embodiment of the invention (the telescoping rod in the first position);

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is a schematic structural diagram of an expansion head in an embodiment of the present invention;

fig. 6 is a schematic view of a partial structure of the telescopic rod in the embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 6, in order to implement a preferred embodiment of the present invention, the pipe penetrating device includes a casing 1, an expansion head 2, an expansion rod 3, a driving device 4, and a limiting member 5.

Wherein the sleeve 1 is hollow inside and has a first end 11 and a second end 12 opposite to each other.

The expansion head 2 is arranged at the first end 11 of the casing 1, and the expansion head 2 can be radially expanded relative to the casing 1 under the action of external force. In this embodiment the expansion head 2 is a tubular body arranged coaxially with the casing 1. The tubular body sequentially comprises a second tubular body 22, a first tubular body 21 and a third tubular body 23 in the length direction, the third tubular body 23 is relatively close to the first end part 11 of the sleeve 1 and is connected with the first end part 11 of the sleeve 1, the second tubular body 22 is relatively far away from the first end part 11 of the sleeve 1, and the pipe diameters of the third tubular body 23 and the second tubular body 22 are consistent and are matched with the inner diameter of the first end part 11 of the sleeve 1. The pipe diameter of the first pipe 21 is smaller than the pipe diameters of the second pipe and the third pipe, so that the pipe is of a structure with two large ends and a small middle. Meanwhile, a plurality of first strip-shaped holes 201 are formed in the peripheral wall of the tubular body, the first strip-shaped holes 201 are arranged at intervals along the circumferential direction of the tubular body, and two ends of each first strip-shaped hole 201 penetrate through the first tubular body and the second tubular body along the length direction. The peripheral wall of the tubular body is further provided with a plurality of second strip-shaped holes 202, the second strip-shaped holes 202 are arranged at intervals along the circumferential direction of the tubular body and are alternately distributed with the first strip-shaped holes 201, and two ends of each second strip-shaped hole 202 penetrate through the first and third tubular bodies along the length direction. Please refer to fig. 5.

The extendable rod 3 is movably inserted into the casing 1, and has a head portion 31 engaged with the expansion head 2 and a tail portion 32 opposed to the second end portion 12 of the casing 1, and the extendable rod 3 is movable to a first position where the head portion 31 acts on the expansion head 2 to open the expansion head 2 and a second position where the action on the expansion head 2 is released to return the expansion head 2. Specifically, as shown in fig. 3 and 4, in the first position, the head 31 of the telescopic rod 3 is located inside the first tube 21 and radially expands the first and second tubes; as shown in fig. 1 and 2, in the second position, the head 31 of the telescopic rod 3 is located in the second tube 22 to restore the first and second tubes. In this embodiment, at least a part of the head 31 of the telescopic rod 3 is circular truncated cone-shaped, the small end 31a thereof is connected with the telescopic rod 3, and the large end 31b thereof protrudes radially relative to the telescopic rod 3. Please refer to fig. 6.

The output end of the driving device 4 is connected to the tail 32 of the telescopic rod 3 for driving the telescopic rod 3 to move to the first position or the second position. The driving device 4 is a cylinder, which comprises a cylinder body 41, and a piston 42 arranged in the cylinder body 41, the piston 42 is connected with the tail 32 of the telescopic rod 3, and the piston 42 divides the cylinder body into a first chamber 401 (in the figure, a rod cavity of the cylinder) and a second chamber 402 (in the figure, a rodless cavity of the cylinder), and the piston 42 is arranged to move under the push of the air pressure in the first chamber 401 or the second chamber 402, thereby driving the telescopic rod 3 to move. In order to make the piston 42 move under the push of the air pressure in the first chamber 401 or the second chamber 402, the driving device 4 further includes a first air pipe 43, a second air pipe 44, a third air pipe 45 and a valve 46, the first air pipe 43 is communicated with the first chamber 401 through the outlet end thereof, the second air pipe 44 is communicated with the second chamber 402 through the outlet end thereof, the inlet ends of the first air pipe 43 and the second air pipe 44 are communicated with the third air pipe 45, the valve 46 is arranged at the communication position, and the valve 46 is a three-position two-way valve for making the third air pipe 45 alternatively communicated with the first air pipe 43 and the second air pipe 44. When air enters the second chamber 402 through the third air pipe 45 and the second air pipe 44, the air pressure in the second chamber 402 is high, and the piston 42 is pushed to the direction of the first chamber 401, at this time, the piston 42 can push the telescopic rod 3 to move to the second position; on the contrary, when the air enters the first chamber 401 through the third air tube 45 and the first air tube 43, the air pressure in the first chamber 401 is higher, and the piston 42 is pushed to the direction of the second chamber 402, and at this time, the piston 42 can push the telescopic rod 3 to move to the first position.

The stop member 5 is connected to the outer peripheral wall of the sleeve 1 and is disposed adjacent to the second end 12 of the sleeve 1. In this embodiment, the limiting member 5 is a nut and is in threaded connection with the outer circumferential wall of the sleeve 1.

Also, the sleeve 1 is provided with a hand-held rod 6 adjacent its second end 12.

The tube penetrating device of the embodiment is used for pairing the heat exchange tube 7 and the tube plate 8 in the heat exchanger, the tube plate 8 is provided with a first plate surface 81, a second plate surface 82 and a through hole penetrating through the first plate surface and the second plate surface, the edge of the through hole corresponding to the first plate surface 81 extends outwards to form an annular boss 811, and the end part of the heat exchange tube 7 is opposite to the boss 811.

The operation method and principle of the embodiment are as follows:

an operator holds the hand-held rod 6 by hand, and makes the telescopic rod 3 be at the second position, and then inserts the end of the pipe penetrating device where the expansion head 2 is located into the heat exchange pipe 7 after penetrating through the through hole on the pipe plate 8 until the limiting piece 5 on the sleeve 1 is abutted against the second plate surface 82 of the pipe plate 8.

Then, the telescopic rod 3 is driven to move to the first position, the head 31 of the telescopic rod 3 radially extrudes the expansion head 2 to enable the expansion head 2 to be opened, and the opened expansion head 2 is tightly attached to the inner wall surface of the heat exchange tube 7, so that the heat exchange tube 7 is assembled with the tube plate 8.

Claims

1. A rodding device, comprising:

the sleeve (1) is provided with a first end part (11) and a second end part (12) which are opposite, and the first end part (11) is provided with an expansion head (2) which can be radially expanded relative to the sleeve (1) under the action of external force;

a telescopic rod (3) movably inserted in the sleeve (1) and having a head portion (31) engaged with the expansion head (2) and a tail portion (32) opposed to the second end portion (12) of the sleeve (1), the telescopic rod (3) being movable to a first position where the head portion (31) acts on the expansion head (2) to open the expansion head (2) and a second position where the action on the expansion head (2) is released to restore the expansion head (2);

and the output end of the driving device (4) is connected with the tail part (32) of the telescopic rod (3) and is used for driving the telescopic rod (3) to move to the first position or the second position.

2. A rodder according to claim 1, wherein: the expansion head (2) is a tubular body which is coaxially arranged with the sleeve (1), the tubular body is provided with a first tube body (21) which is relatively close to the sleeve (1) and a second tube body (22) which is relatively far away from the sleeve (1) in the length direction, the tube diameter of the first tube body (21) is smaller than that of the second tube body (22), and in a first position, the head (31) of the telescopic rod (3) is positioned in the first tube body (21) and radially expands the first tube body and the second tube body; and under the second position, the head (31) of the telescopic rod (3) is positioned in the second pipe body (22) to reset the first pipe body and the second pipe body.

3. The rodder according to claim 2, wherein: the wall of the tubular body is provided with a plurality of first strip-shaped holes (201), the first strip-shaped holes (201) are arranged at intervals along the circumferential direction of the tubular body, and two ends of each first strip-shaped hole (201) penetrate through the first tubular body and the second tubular body along the length direction.

4. A rodder according to claim 3, wherein: the tubular body still has third body (23) in length direction, third body (23), second body (22) are located the both sides of first body (21) respectively, and the pipe diameter of third body (23), second body (22) is unanimous to make the tubular body be the big little structure in middle of two, third body (23) link to each other with first end (11) of sleeve pipe (1) simultaneously.

5. The rodder according to claim 4, wherein: the peripheral wall of the tubular body is also provided with a plurality of second strip-shaped holes (202), the second strip-shaped holes (202) are arranged at intervals along the circumferential direction of the tubular body and are alternately distributed with the first strip-shaped holes (201), and two ends of each second strip-shaped hole (202) penetrate through the first and third tubular bodies along the length direction.

6. A rodder according to claim 2, wherein: at least part of the head (31) of the telescopic rod (3) is in a circular truncated cone shape, the small head end (31 a) of the head is connected with the telescopic rod (3), and the large head end (31 b) of the head is protruded in the radial direction relative to the telescopic rod (3).

7. The rodder according to any one of claims 1-6, wherein: the driving device (4) is a cylinder, and a piston (42) of the cylinder is connected with the tail part (32) of the telescopic rod (3).

8. The rodder according to any one of claims 1-6, wherein: and a limiting member (5) connected to the peripheral wall of the sleeve (1) and arranged adjacent to the second end (12) of the sleeve (1).

9. A rodder according to claim 8, wherein: the limiting piece (5) is a nut and is in threaded connection with the outer peripheral wall of the sleeve (1).