A heat exchange tube bundle jet cleaning device

Abstract

The utility model relates to the technical field of jet cleaning device, specifically is a kind of heat exchange tube bundle jet cleaning device, including high-pressure water pump and as cleaning spray pipe's hollow pipe, high-pressure water pump is connected with hollow pipe by water delivery hose, the front end of hollow pipe is provided with several high-pressure nozzles, the hollow pipe is sleeved with a support ring that can move along its axial direction, adjusting assembly and several along the circumferential direction distribution guide sliding groove are arranged on the support ring, each guide sliding groove is slidably provided with guide slider, the fixed top block for bracing the inner wall of heat exchange pipe is arranged on the guide slider, adjusting assembly can drive all guide slider synchronous radial sliding along guide sliding groove, so that the top block is extended to brace pipe wall or retract to disengage pipe wall, ensure the centring and operation stability of spray pipe when tube bundle is cleaned.

Description

Technical Field

[0001] This utility model relates to the technical field of jet cleaning devices, and more specifically, to a heat exchanger tube bundle jet cleaning device. Background Technology

[0002] The heat exchanger tube bundle jet cleaning device is a piece of equipment that uses high-pressure water jet technology to efficiently descale and maintain the internal tube bundles of industrial heat exchangers. It uses high-pressure nozzles to inject high-pressure water jets into the heat exchange tubes at extremely high speeds. Utilizing the enormous impact force and peeling effect of the water jet, it thoroughly removes hard scale, oil, polymers, and other deposits adhering to the tube walls, thereby restoring the heat exchanger's heat exchange efficiency, reducing energy consumption, and extending the equipment's service life. This device is a key technical means to ensure the safe and economical operation of heat exchange equipment in industries such as petroleum, chemical, and power.

[0003] For example, Chinese Patent Publication No. CN202020407405.8 discloses a high-pressure water jet cleaning gun, which includes a pipe connector, a pipe switching device, and a nozzle fixing device. One end of the pipe connector is connected to a high-pressure water pipe, and the other end is connected to the pipe switching device via a threaded connection. The pipe switching device has two flow dividers at both ends, and the two flow dividers are connected by a plurality of high-pressure pipes. A solenoid valve is installed in the middle of the high-pressure pipe. The nozzle fixing device is connected to the right side of the pipe switching device via a threaded connection. The nozzle fixing device has a plurality of nozzle pipes inside, and one end of the nozzle pipe is connected to a high-pressure nozzle. This invention effectively improves the nozzle replacement rate of high-pressure water jet cleaning equipment, reduces the labor intensity of operators, and improves the working efficiency of high-pressure water jet cleaning equipment.

[0004] However, in the above-mentioned technical solutions, the jet cleaning devices currently on the market usually use a high-pressure water pump to generate high-pressure water flow, which is extended into the pipe through a nozzle at the front end. The nozzle is manually pushed forward, and the dirt is peeled off and removed by the impact force of the water jet. However, in this method, the nozzle is in a cantilever state in the tube bundle, and it is difficult to maintain precise axial alignment when manually applying force. This can easily cause radial eccentricity and axial sway of the nozzle in the pipe. Once the nozzle deviates from the central axis, the high-pressure water jet will be severely unevenly distributed on the circumference of the pipe wall. The side closer to the nozzle may be damaged by excessive jet impact, while the side farther away will form a cleaning dead zone due to jet attenuation. At the same time, the eccentric nozzle is also prone to scraping against the pipe wall during advancement, increasing resistance and posing a risk of scratches. Utility Model Content

[0005] The main objective of this invention is to provide a heat exchanger tube bundle jet cleaning device that can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a heat exchanger tube bundle jet cleaning device, comprising a high-pressure water pump and a hollow tube serving as a cleaning nozzle. The high-pressure water pump is connected to the hollow tube via a water delivery hose. A plurality of high-pressure nozzles are provided at the front end of the hollow tube. A support ring that can move along its axial direction is fitted on the hollow tube. An adjustment component and a plurality of guide grooves distributed along the circumferential direction are provided on the support ring. A guide slider is slidably disposed in each guide groove. A top block for supporting the inner wall of the heat exchanger tube is fixedly disposed on the guide slider. The adjustment component can drive all the guide sliders to slide radially along the guide grooves simultaneously, thereby causing the top block to extend to support the tube wall or retract to detach from the tube wall.

[0007] Preferably, the outer surface of the top block is provided with anti-slip texture to increase friction.

[0008] Preferably, the length of the hollow tube is greater than the length of the heat exchange tube bundle to be cleaned.

[0009] Preferably, the hollow tube is made of a hard metal material.

[0010] Preferably, the inner cavity of the hollow tube is a one-way opening, with the end near the water delivery hose being the water inlet, and the high-pressure nozzle is installed through the tube wall of the hollow tube.

[0011] Preferably, the adjustment assembly includes a rotating ring coaxially rotatably mounted within the support ring. The rotating ring has an equal number of inclined grooves as the guide grooves. Each guide slider is rotatably connected to a sliding post, which extends into the corresponding groove. By rotating the rotating ring, the inclined surface of the groove drives the sliding post and the guide slider connected thereto to move radially.

[0012] Preferably, a circular ring is fixedly sleeved on the outer side of the rotating ring, and a worm wheel is formed on the outer circumference of the circular ring. A worm that meshes with the worm wheel is mounted on the support ring via a bearing.

[0013] Preferably, one end of the worm gear is provided with a rotating column, and one end of the rotating column extends to the outside of the support ring and is fixedly connected to a knob.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) This utility model first cleans the inlet section of the tube bundle with the front end of the hollow tube, and then moves the support ring into the cleaned tube section. The knob is rotated to drive the worm gear mechanism, so that the rotating ring pushes all the top blocks outward synchronously through the inclined slide groove, and closes the tube wall to realize the automatic centering and stable support of the nozzle. After that, the nozzle is continuously pushed deeper, and the high-pressure water jet cleans the subsequent tube sections evenly. After cleaning, the knob is rotated in the opposite direction to retract the top blocks and the device can be pulled out. The operation logic of "cleaning the positioning section first, and then supporting and pushing" assists the staff to center and support the nozzle, and effectively ensures the centering and operation stability of the nozzle during tube bundle cleaning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a heat exchanger tube bundle jet cleaning device according to the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of a heat exchanger tube bundle jet cleaning device according to the present invention.

[0018] Figure 3 This is a schematic diagram of the adjustment component in a heat exchanger tube bundle jet cleaning device according to the present invention;

[0019] Figure 4 This is a rear view schematic diagram of the adjustment component in a heat exchanger tube bundle jet cleaning device according to the present invention.

[0020] In the diagram: 1. High-pressure water pump; 2. Hollow pipe; 3. Water delivery hose; 4. Support ring; 5. Adjustment assembly; 501. Rotating ring; 502. Slide groove; 503. Slide column; 504. Circular ring; 505. Worm gear; 506. Worm; 507. Rotating column; 508. Knob; 6. Guide slide groove; 7. Guide slider; 8. Top block; 9. Anti-slip texture; 10. High-pressure nozzle. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0022] like Figure 1 and Figure 2As shown, a heat exchange tube bundle jet cleaning device includes a high-pressure water pump 1 and a hollow tube 2 serving as a cleaning nozzle. The high-pressure water pump 1 is connected to the hollow tube 2 via a water delivery hose 3. The front end of the hollow tube 2 is provided with several high-pressure nozzles 10. A support ring 4 that can move along its axial direction is fitted on the hollow tube 2. The support ring 4 is provided with an adjustment component 5 and several guide grooves 6 distributed along the circumferential direction. A guide slider 7 is slidably arranged in each guide groove 6. A top block 8 for supporting the inner wall of the heat exchange tube is fixedly arranged on the guide slider 7. The adjustment component 5 can drive all the guide sliders 7 to slide radially along the guide groove 6 simultaneously, thereby causing the top block 8 to extend to support the tube wall or retract to detach from the tube wall.

[0023] The outer surface of the top block 8 is provided with anti-slip texture 9 to increase friction.

[0024] like Figure 3 and Figure 4 As shown, in another embodiment of the present invention, the adjusting component 5 includes a rotating ring 501 coaxially rotatably mounted in the support ring 4. The rotating ring 501 has an equal number of inclined grooves 502 as the guide grooves 6. Each guide slider 7 is rotatably connected to a sliding post 503. The sliding post 503 extends into the corresponding groove 502. By rotating the rotating ring 501, the inclined surface of the groove 502 drives the sliding post 503 and the guide slider 7 connected thereto to move radially.

[0025] A circular ring 504 is fixedly sleeved on the outer side of the rotating ring 501. A worm gear 505 is formed on the outer circumference of the circular ring 504. A worm 506 that meshes with the worm gear 505 is installed on the support ring 4 through a bearing.

[0026] One end of the worm gear 506 is provided with a rotating column 507, and one end of the rotating column 507 extends to the outside of the support ring 4 and is fixedly connected to a knob 508.

[0027] The operation of the adjustment component is as follows: when it is necessary to tighten or loosen, the operator rotates the knob 508 located outside the support ring 4. This rotational motion is transmitted to the worm gear 506 through the rotating column 507. The worm gear 506 drives the worm wheel 505, which meshes with it, to rotate. This, in turn, causes the rotating ring 501, which is fixedly connected to the worm wheel 505, to rotate around the axis within the support ring 4. The inclined sliding groove 502 on the rotating ring 501 rotates accordingly and acts on the sliding column 503 embedded therein. This converts the circular motion of the rotating ring 501 into the precise radial linear motion of the sliding column 503 and the guide slider 7 rotatably connected to it along the guide groove 6 on the support ring 4. During this process, the worm gear mechanism effectively prevents accidental loosening under the action of cleaning vibration or water jet backlash by utilizing its self-locking characteristics, thereby ensuring the continuous reliability and stability of the nozzle positioning during the cleaning process.

[0028] Working principle of this heat exchanger tube bundle jet cleaning device:

[0029] In use, firstly, the front end of the hollow tube 2 is inserted into the inlet of the heat exchanger tube bundle. The high-pressure water pump 1 is then started to perform preliminary cleaning of the inlet section. Next, the support ring 4, fitted onto the hollow tube 2, is axially moved into the cleaned inlet cavity of the heat exchanger tube bundle. Then, rotating the knob 508 drives the worm wheel 505 via the worm gear 506, causing the rotating ring 501 to rotate. Its inclined groove 502 pushes all the sliding pillars 503 and guide sliders 7 to move radially outward synchronously, causing the top block 8 to tighten against the inner wall of the cleaned tube section, thus achieving the cleaning of the hollow tube 2. With precise centering and stable support, the operator continues to push the hollow tube 2 deeper into the tube bundle. High-pressure water continuously sprays from the high-pressure nozzle 10 to remove scale from the subsequent tube wall. The centering effect of the support ring 4 ensures the uniformity and stability of the cleaning process. After the tube bundle is cleaned, the top block 8 is retracted by rotating the knob 508 in the opposite direction, and the device can be pulled out. The device, through the operating logic of "cleaning the positioning section first, then tightening and pushing", assists the operator in centering and supporting the nozzle, solving the problem of nozzle centering and support in tube bundle cleaning.

[0030] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A heat exchanger tube bundle jet cleaning device, comprising a high-pressure water pump (1) and a hollow tube (2) serving as a cleaning nozzle, wherein the high-pressure water pump (1) is connected to the hollow tube (2) via a water delivery hose (3), and the front end of the hollow tube (2) is provided with a plurality of high-pressure nozzles (10), characterized in that: The hollow tube (2) is fitted with a support ring (4) that can move along its axial direction. The support ring (4) is provided with an adjustment component (5) and a number of guide grooves (6) distributed along the circumferential direction. A guide slider (7) is slidably arranged in each guide groove (6). A top block (8) for supporting the inner wall of the heat exchange tube is fixedly arranged on the guide slider (7). The adjustment component (5) can drive all the guide sliders (7) to slide radially along the guide groove (6) at the same time, so that the top block (8) extends to support the tube wall or retracts to disengage from the tube wall.

2. The heat exchanger tube bundle jet cleaning device according to claim 1, characterized in that: The outer surface of the top block (8) is provided with anti-slip texture (9) to increase friction.

3. The heat exchanger tube bundle jet cleaning device according to claim 2, characterized in that: The length of the hollow tube (2) is greater than the length of the heat exchange tube bundle to be cleaned.

4. The heat exchanger tube bundle jet cleaning device according to claim 3, characterized in that: The hollow tube (2) is made of hard metal material.

5. The heat exchanger tube bundle jet cleaning device according to claim 4, characterized in that: The inner cavity of the hollow tube (2) is a one-way opening, and the end near the water delivery hose (3) is the water inlet. The high-pressure nozzle (10) is installed through the tube wall of the hollow tube (2).

6. The heat exchanger tube bundle jet cleaning device according to claim 5, characterized in that: The adjustment assembly (5) includes a rotating ring (501) coaxially rotatably mounted in the support ring (4). The rotating ring (501) has an equal number of inclined grooves (502) as the guide grooves (6). Each guide slider (7) is rotatably connected to a sliding post (503). The sliding post (503) extends into the corresponding groove (502). By rotating the rotating ring (501), the inclined surface of the groove (502) drives the sliding post (503) and the guide slider (7) connected thereto to move radially.

7. The heat exchanger tube bundle jet cleaning device according to claim 6, characterized in that: A ring (504) is fixedly sleeved on the outer side of the rotating ring (501), and a worm wheel (505) is formed on the outer circumference of the ring (504). A worm (506) that meshes with the worm wheel (505) is installed on the support ring (4) through a bearing.

8. The heat exchanger tube bundle jet cleaning device according to claim 7, characterized in that: One end of the worm gear (506) is provided with a rotating column (507), and one end of the rotating column (507) extends to the outside of the support ring (4) and is fixedly connected to a knob (508).

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