Heat exchange tube cleaning and blowing device

Abstract

The utility model discloses a heat exchange tube cleaning and blowing device, which belongs to the technical field of shell-and-tube heat exchangers, and comprises a rotating shaft, a flow guide cover, a flow guide disc and a sealing and pressing part, the outer side wall of the axial end of the rotating shaft is fixedly connected with the flow guide cover, the end, away from the rotating shaft, of the flow guide cover is fixedly connected with the flow guide disc, an air storage cavity is formed between the flow guide cover and the flow guide disc, and the air conveying hole is communicated with the air storage cavity; a plurality of cleaning and blowing holes are formed in the flow guide disc; the sealing pressing part is arranged outside the flow guide cover, one end of the sealing pressing part is rotationally matched with the rotating shaft, and a rubber sealing ring is arranged at the other end of the sealing pressing part; the rotating shaft is provided with a driving channel used for conveying driving gas, and the flow guide cover is provided with a rotation driving piece which drives the flow guide cover, the flow guide disc and the rotating shaft to rotate through the driving gas. According to the utility model, a plurality of heat exchange tubes can be cleaned and blown at one time, so that the working efficiency is improved, and the working time for cleaning and blowing the heat exchange tubes is shortened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of shell and tube heat exchanger, and specifically relates to a heat exchange pipe blow cleaning device. BACKGROUND

[0002] During the processing of the shell and tube heat exchanger, the inside of the heat exchange pipe needs to be blow cleaned before assembling the pipe box, so as to remove the residual water stains in the heat exchange pipe.

[0003] The existing heat exchange pipe blow cleaning mode is as follows: a hose is connected with a compression pump, the other end of the hose is inserted into the inside of a single heat exchange pipe, and compressed air is used to blow clean the water stains in the heat exchange pipe.

[0004] However, the conventional shell and tube heat exchanger has nearly one thousand heat exchange pipes, and the blow cleaning operation is inefficient and time-consuming. INVENTION CONTENTS

[0005] To solve the problem of low operation efficiency and long time consumption caused by the existing heat exchange pipe blow cleaning, the utility model provides a heat exchange pipe blow cleaning device.

[0006] A heat exchange pipe blow cleaning device comprises a rotating shaft, a flow guide cover, a flow guide disc, and a sealing and pressing part.

[0007] The rotating shaft is internally provided with a gas conveying hole penetrating in the axial direction, the outer side wall of the axial end of the rotating shaft is fixedly connected with the flow guide cover, the end of the flow guide cover away from the rotating shaft is fixedly connected with the flow guide disc, and the flow guide disc is coaxially arranged with the rotating shaft.

[0008] A plurality of blow cleaning holes are arranged on the flow guide disc.

[0009] The sealing and pressing part is arranged outside the flow guide cover and can surround the radial outer side of the flow guide cover, one end of the sealing and pressing part is rotationally matched with the rotating shaft, and the other end of the sealing and pressing part is provided with a rubber sealing ring.

[0010] The sealing and pressing part and the rotating shaft are provided with a driving channel for conveying driving gas, and the flow guide cover is provided with a rotating driving part driven by the driving gas to drive the rotation of the flow guide cover, the flow guide disc, and the rotating shaft.

[0011] Preferably, a shaft sleeve is fixedly arranged at one end of the sealing and pressing part, and the shaft sleeve is coaxially arranged outside the rotating shaft and rotationally matched with the rotating shaft.

[0012] Preferably, the inner side wall of the shaft sleeve and the outer side wall of the rotating shaft are rotationally matched through a bearing.

[0013] Preferably, a sealing ring is arranged between the inner side wall of the sleeve and the outer side wall of the rotating shaft.

[0014] Preferably, the driving channel comprises a threaded hole, an annular groove and a plurality of air passages.

[0015] The annular groove is arranged on the rotating shaft and extends radially inwardly along the outer side wall, the threaded hole is arranged on the sleeve and extends radially inwardly along the outer side wall to communicate with the annular groove, the air passage is arranged in the rotating shaft and extends in the axial direction, one end of the air passage communicates with the annular groove, and the other end of the air passage communicates with a gas delivery pipe arranged in the gas storage cavity, and the other end of the gas delivery pipe communicates with the rotary driving member.

[0016] Preferably, a radially outwardly extending annular accommodating groove is arranged on the inner side surface of the sleeve at a position corresponding to the annular groove, and the threaded hole penetrates through the annular accommodating groove.

[0017] Preferably, the rotary driving member comprises a plurality of driving pipes uniformly distributed in the circumferential direction, and the driving pipes correspond one-to-one to the air passages.

[0018] The driving pipe has a right-angle bending structure, a first straight pipe end portion of the driving pipe is connected with the corresponding gas delivery pipe after penetrating through the guide cover from the outside of the guide cover, the central axis of the first straight pipe is perpendicular to the central axis of the rotating shaft, and the central axis of a second straight pipe of the driving pipe is perpendicular to the central axis of the rotating shaft.

[0019] Preferably, the rotary driving member comprises four driving pipes uniformly distributed in the circumferential direction.

[0020] Preferably, the cleaning and blowing hole has a circular truncated cone structure, and the small end surface of the cleaning and blowing hole faces the guide cover.

[0021] Preferably, the guide cover has a circular truncated cone structure, the guide disc has a circular plate structure, the guide disc is coaxially arranged at the large end of the guide cover, the small end of the guide cover is coaxially fixedly provided with a connecting sleeve, and the connecting sleeve is coaxially fixedly sleeved on the rotating shaft.

[0022] The utility model discloses the beneficial effects are:

[0023] (1) the utility model discloses can carry out one -time many heat exchange pipes's cleaning and blowing operation, thereby provide the operation efficiency, reduce the operation time of cleaning and blowing heat exchange pipe.

[0024] (2) The utility model discloses a drive channel and rotation driving part are set up, can realize the rotation of the flow guide disc, the flow guide cover, the rotating shaft, one aspect makes the gas that clear blowing hole sprays more evenly diffuses, is favorable to the clear blowing operation of all heat exchange pipes in the sealed cavity, the gas that clear blowing hole sprays occurs rotary jet when the flow guide disc rotates, and the diffusion angle is bigger, can more fully realize the clear blowing operation of all heat exchange pipes in the sealed cavity. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description, explain the application and do not limit the application.

[0026] Figure 1 It is the structure schematic diagram of the heat exchange pipe clear blowing device of the utility model;

[0027] Figure 2 It is the structure schematic diagram of the flow guide cover and the flow guide disc in the utility model;

[0028] Figure 3 It is Figure 2 A view of

[0029] Figure 4 It is Figure 2 B view of

[0030] Figure 5 It is the use schematic diagram of the heat exchange pipe clear blowing device of the utility model;

[0031] Among them:

[0032] 01 - tube sheet, 02 - first hose, 03 - compression pump, 04 - second hose;

[0033] 1 - rotating shaft, 11 - gas delivery hole, 2 - flow guide cover, 21 - gas storage cavity, 22 - connecting sleeve, 3 - flow guide disc, 31 - clear blowing hole, 4 - sealing compression part, 41 - rubber sealing ring, 42 - sealing cavity, 43 - shaft sleeve, 44 - bearing, 45 - sealing ring, 46 - annular accommodating groove, 5 - screw hole, 6 - annular groove, 7 - gas channel, 8 - gas delivery pipe, 9 - drive pipe, 91 - first straight pipe, 92 - second straight pipe. DETAILED DESCRIPTION

[0034] In order to make the technical personnel in the field better understand the technical scheme of the utility model, the utility model is further explained in detail below in combination with the drawings and specific embodiments.

[0035] As Figure 1 Shown, a kind of heat exchange pipe clear blowing device, including rotating shaft 1, flow guide cover 2, flow guide disc 3, sealing compression part 4;

[0036] The rotating shaft 1 is internally provided with a gas delivery hole 11 extending through in the axial direction, and the outer wall of the axial end of the rotating shaft 1 is fixedly connected with the flow guide cover 2. In use, the other axial end of the rotating shaft 1 is rotationally connected with the first hose 02 through a rotating joint, the first hose 02 is connected with the compression pump 03, the end of the flow guide cover 2 away from the rotating shaft 1 is fixedly connected with the flow guide disc 3, and the flow guide disc 3 is coaxially arranged with the rotating shaft 1. The flow guide cover 2 and the flow guide disc 3 form a gas storage cavity 21, and the gas delivery hole 11 is in communication with the gas storage cavity 21.

[0037] As shown in Figure 3 The flow guide disc 3 is provided with a plurality of blow holes 31.

[0038] The sealing and pressing part 4 is arranged outside the flow guide cover 2 and can surround the radial outer side of the flow guide cover 2. One end of the sealing and pressing part 4 is rotationally connected with the rotating shaft 1, and the other end of the sealing and pressing part 4 is provided with a rubber sealing ring 41. When the rubber sealing ring 41 is pressed against the tube plate 01, a sealing cavity 42 is formed between the sealing and pressing part 4 and the tube plate 01, and the flow guide cover 2 and the flow guide disc 3 are located in the sealing cavity 42.

[0039] The sealing and pressing part 4 and the rotating shaft 1 are provided with a driving channel for delivering driving gas, and the flow guide cover 2 is provided with a rotating driving member driven by the driving gas to rotate the flow guide cover 2, the flow guide disc 3 and the rotating shaft 1.

[0040] Preferably, a shaft sleeve 43 is fixedly arranged at one end of the sealing and pressing part 4, and the shaft sleeve 43 is coaxially arranged outside the rotating shaft 1 and rotationally connected with the rotating shaft 1.

[0041] Preferably, the inner wall of the shaft sleeve 43 and the outer wall of the rotating shaft 1 are rotationally connected through a bearing 44.

[0042] Preferably, a sealing ring 45 is arranged between the inner wall of the shaft sleeve 43 and the outer wall of the rotating shaft 1 to prevent the gas in the sealing cavity 42 from leaking through the gap between the shaft sleeve 43 and the rotating shaft 1.

[0043] Preferably, the driving channel includes a threaded hole 5, an annular groove 6 and a plurality of gas channels 7.

[0044] The annular groove 6 is arranged on the rotating shaft 1 and extends radially inward from the outer wall, wherein the annular groove 6 does not extend through to the gas delivery hole 11. The threaded hole 5 is arranged on the shaft sleeve 43 and extends radially inward from the outer wall to communicate with the annular groove 6. The gas channel 7 is arranged in the rotating shaft 1 and extends in the axial direction. The axial end of the gas channel 7 communicates with the annular groove 6, the other end of the gas channel 7 is connected with a gas delivery pipe 8 arranged in the gas storage cavity 21, and the other end of the gas delivery pipe 8 is connected with the rotating driving member.

[0045] Preferably, an annular receiving groove 46 extending radially outward is provided on the inner side of the bushing 43 at the position corresponding to the annular groove 6, and the threaded hole 5 passes through the annular receiving groove 46.

[0046] Preferably, the rotation drive includes a plurality of drive tubes 9 evenly distributed along the circumferential direction, and the drive tubes 9 correspond one-to-one with the air passages 7;

[0047] like Figure 4 As shown, the drive tube 9 has a right-angle bend structure. The end of the first straight tube 91 of the drive tube 9 passes through the outside of the guide shroud 2 and is connected to the corresponding air supply tube 8. The central axis of the first straight tube 91 intersects the central axis of the rotating shaft 1 perpendicularly. The central axis of the second straight tube 92 in the drive tube 9 is perpendicular to the central axis of the rotating shaft 1 and does not intersect.

[0048] Preferably, the rotation drive includes four drive tubes 9 evenly distributed along the circumferential direction.

[0049] Preferably, the cleaning hole 31 has a frustum-shaped structure, and the small end face of the cleaning hole 31 guides the air shroud 2. The structure of the cleaning hole 31 allows the incoming cleaning gas to diffuse once within the cleaning hole 31, causing the compressed cleaning gas to be ejected in a jet shape, thereby achieving a better cleaning effect.

[0050] Preferred, such as Figure 2 As shown, the flow guide 2 has a frustum cylindrical structure, the flow guide disk 3 has a circular plate structure, the flow guide disk 3 is coaxially arranged at the large end of the flow guide 2, and the small end of the flow guide 2 is coaxially fixedly provided with a connecting sleeve 22, which is coaxially fixedly sleeved on the rotating shaft 1.

[0051] Specifically, the sealing and pressing part 4 has a frustum-shaped cylindrical structure, the rubber sealing ring 41 has a circular ring structure, the small end of the sealing and pressing part 4 is coaxially fixedly connected to the bushing 43, and the large end of the sealing and pressing part 4 is coaxially fixedly connected to the rubber sealing ring 41.

[0052] A heat exchange tube cleaning device, the specific implementation of which is as follows:

[0053] like Figure 5 As shown, before use, the first hose 02 is rotatably connected to the rotating shaft 1 through a rotary joint. The other end of the first hose 02 is connected to the compression pump 03. The second hose 04 is installed in the threaded hole 5. The other end of the second hose 04 is connected to the compression pump 03. A first valve is provided on the first hose 02 and a second valve is provided on the second hose 04.

[0054] In use, the rubber sealing ring 41 is pressed against the tube plate 01, a sealed cavity 42 is formed between the sealing pressing part 4 and the tube plate 01, and the plurality of heat exchange tubes on the tube plate 01 are located in the sealed cavity 42; the first valve is opened, the second valve is closed, and the compression pump 03 is started, the compressed blow cleaning gas enters the gas storage cavity 21 through the first hose 02 and the gas inlet hole 11, and after reaching a certain pressure, is sprayed out through each blow cleaning hole 31, and the sprayed blow cleaning gas enters each heat exchange tube to perform blow cleaning; since the heat exchange tubes in the sealed cavity 42 and each blow cleaning hole 31 on the flow guide disc 3 cannot be one-to-one and directly opposite, part of the heat exchange tubes inside is difficult to achieve complete blow drying, therefore, after a period of blow cleaning, the second valve is opened, part of the gas enters the driving channel to become driving gas through the second hose 04, the driving gas enters the driving pipe 9 along the threaded hole 5, the annular accommodating groove 46, the annular groove 6, the gas channel 7 and the gas inlet pipe 8, and when the driving gas is sprayed out from the driving pipe 9, a rotary torque is generated, so as to drive the flow guide cover 2, the flow guide disc 3 and the rotary shaft 1 to rotate, when the flow guide disc 3 rotates, the gas sprayed out of the blow cleaning hole 31 is more evenly diffused, which is beneficial to the blow cleaning of all the heat exchange tubes in the sealed cavity 42, and in addition, when the flow guide disc 3 rotates, the gas sprayed out of the blow cleaning hole 31 forms a rotary jet flow, the diffusion angle is larger, and the blow cleaning of all the heat exchange tubes in the sealed cavity 42 can be more fully achieved.

[0055] When the part of the heat exchange tubes is cleaned, the position of the rubber sealing ring 41 pressed against the tube plate 01 is changed, and the blow cleaning of the heat exchange tubes at the remaining positions is performed.

[0056] Although the specific embodiments of the present application are described above with reference to the drawings, the present application is not limited to the above description, and those skilled in the art should understand that various modifications or changes made on the basis of the technical solutions of the present application without creative labor are still within the protection scope of the present application.

Claims

1. A heat exchange tube purging device, characterized by, The rotating shaft (1), the flow guide cover (2), the flow guide disc (3), and the sealing compression part (4) are included. The rotating shaft (1) is internally provided with a gas delivery hole (11) extending along the axial direction, and the outer side wall of the axial end of the rotating shaft (1) is fixedly connected with the flow guide cover (2). The end of the flow guide cover (2) away from the rotating shaft (1) is fixedly connected with the flow guide disc (3), and the flow guide disc (3) is coaxially arranged with the rotating shaft (1). The flow guide cover (2) and the flow guide disc (3) form a gas storage cavity (21), and the gas delivery hole (11) is in communication with the gas storage cavity (21). A plurality of blow holes (31) are arranged on the flow guide disc (3). The sealing compression part (4) is arranged outside the flow guide cover (2) and can surround the radial outer side of the flow guide cover (2). One end of the sealing compression part (4) is rotationally connected with the rotating shaft (1), and the other end of the sealing compression part (4) is provided with a rubber sealing ring (41). The sealing compression part (4) and the rotating shaft (1) are provided with a driving channel for delivering driving gas. The flow guide cover (2) is provided with a rotating driving member driven by the driving gas to drive the rotation of the flow guide cover (2), the flow guide disc (3), and the rotating shaft (1).

2. The heat exchanging tube purging device according to claim 1, wherein One end of the sealing compression part (4) is fixedly provided with a shaft sleeve (43), and the shaft sleeve (43) is coaxially arranged outside the rotating shaft (1) and rotationally connected with the rotating shaft (1).

3. The heat exchanging tube purging device according to claim 2, wherein The inner side wall of the shaft sleeve (43) and the outer side wall of the rotating shaft (1) are rotationally connected through a bearing (44).

4. The heat exchanging tube purging device according to claim 2, wherein A sealing ring (45) is arranged between the inner side wall of the shaft sleeve (43) and the outer side wall of the rotating shaft (1).

5. The heat exchanging tube purging device according to claim 2, wherein The driving channel includes a threaded hole (5), an annular groove (6), and a plurality of gas channels (7). The annular groove (6) is arranged on the rotating shaft (1) and extends radially inward from the outer side wall. The threaded hole (5) is arranged on the shaft sleeve (43) and extends radially inward from the outer side wall to communicate with the annular groove (6). The gas channel (7) is arranged in the rotating shaft (1) and extends in the axial direction. The axial end of the gas channel (7) communicates with the annular groove (6), and the other end of the gas channel (7) is connected with a gas delivery pipe (8) arranged in the gas storage cavity (21). The other end of the gas delivery pipe (8) is connected with the rotating driving member.

6. The heat exchanging tube purging device according to claim 5, wherein The inner side of the shaft sleeve (43) is provided with an annular accommodating groove (46) extending radially outward at a position corresponding to the annular groove (6). The threaded hole (5) penetrates the annular accommodating groove (46).

7. The heat exchanging tube purging device according to claim 5, wherein The rotating driving member includes a plurality of driving pipes (9) uniformly distributed in the circumferential direction. The driving pipe (9) corresponds to the gas channel (7) one by one. The driving pipe (9) has a right-angle bending structure. The first straight pipe (91) of the driving pipe (9) is connected with the corresponding gas delivery pipe (8) after passing through the flow guide cover (2) from the outside of the flow guide cover (2). The central axis of the first straight pipe (91) is perpendicular to the central axis of the rotating shaft (1). The central axis of the second straight pipe (92) of the driving pipe (9) is perpendicular to the central axis of the rotating shaft (1) and does not intersect.

8. The heat exchanging tube purging device according to claim 7, wherein The rotating driving member comprises four driving pipes (9) uniformly distributed in the circumferential direction.

9. The heat exchanging tube purging device according to claim 1, wherein The blow hole (31) is in the structure of a circular truncated cone, and the small end of the blow hole (31) faces the fairing (2).

10. The heat exchanging tube purging device according to claim 1, wherein The fairing (2) is in the structure of a circular truncated cylinder, the fairing disc (3) is in the structure of a circular plate, the fairing disc (3) is coaxially arranged at the large end of the fairing (2), the small end of the fairing (2) is coaxially fixedly provided with a connecting sleeve (22), and the connecting sleeve (22) is coaxially fixedly sleeved on the rotating shaft (1).

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