Tubular heat exchanger dredging device

Abstract

The utility model provides a tubular heat exchanger dredging device, which relates to the technical field of tubular heat exchanger tube dredging, and comprises a first mounting shell, a second mounting shell, a circular ring, a connecting pipe, a plugging tool bit, a water injection cavity, a water spray hole, a rotary joint, a Z-shaped pipe, a high-pressure pump, a PVC (polyvinyl chloride) pipe and a gear transmission component, according to the device, when the inner wall of the tube nest of the tubular heat exchanger is dredged, materials can be continuously fed, a driving structure for driving the dredging assembly to operate does not need to be shut down, then the operation process is smoother, potential safety hazards are not likely to occur, and the dredging process effect of the tubular heat exchanger is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tube heat exchanger tube bank dredging technical field, specifically, relate to a tube heat exchanger dredging device. BACKGROUND

[0002] The heat exchanger is the equipment that transfers the partial heat of hot fluid to cold fluid, also called heat exchanger, and the heat exchanger occupies an important position in chemical industry, petroleum, power, food and other many industrial production, and the heat exchanger can be used as heater, cooler, condenser, evaporator and reboiler etc. in chemical production, and is widely applied.

[0003] The heat exchanger contains many kinds, and one kind is the tube and shell heat exchanger, and the tube and shell heat exchanger is the wall surface of tube bundle enclosed in shell as the heat transfer surface of partition wall type heat exchanger. This heat exchanger is simple in structure, low in cost, wide in flow cross section and easy to clean scale, but low in heat transfer coefficient and large in land area. It can be manufactured with various structural materials (mainly metal materials), and can be used at high temperature and high pressure, and is the most widely used type.

[0004] At present, when the tube heat exchanger is used for a long time, dirt will form on the inner wall of the tube, and then dredging and cleaning process is needed.

[0005] The announcement number CN222481255U proposes a dredging device for tube heat exchanger, and the device can realize the dredging and cleaning process of the inner wall of the tube, but the flexible screw thread steel strip will rotate at high speed, and then needs to stop multiple times to facilitate manual feeding in the dredging process, otherwise the hand of feeding personnel will be injured, and then the dredging process of the inner wall of the tube heat exchanger needs to be optimized. UTILITY MODEL CONTENT

[0006] The utility model aims at solving the problem in the background art, and further proposes a tube heat exchanger dredging device.

[0007] The utility model solves the technical problem by adopting the technical scheme:

[0008] A tube heat exchanger dredging device, comprising a first mounting shell, a second mounting shell, a circular ring, a connecting pipe, a plug removal cutter head, a water injection cavity, a water injection hole, a rotary joint, a Z-shaped pipe, a high-pressure pump, a PVC pipe and a gear transmission assembly,

[0009] The first mounting shell and the second mounting shell are fixedly connected, and the right end of the first mounting shell is open;

[0010] A plurality of circular rings are fixedly arranged in the interior of the first mounting shell, and the center hole of the circular ring is rotatably connected with the connecting pipe;

[0011] The plug removal cutter head is connected with one end of the connecting pipe with both ends open;

[0012] The water injection cavity is arranged in the inside of the plug-off cutter head, and the water injection cavity is communicated with the inside of the connecting pipe;

[0013] The water injection cavity is arranged in the inside of the plug-off cutter head, and the water injection cavity is communicated with the inside of the connecting pipe;

[0014] The rotary joint is connected with the other end of the connecting pipe;

[0015] The high-pressure pump is fixedly arranged in the second mounting shell, the output end of the high-pressure pump is communicated with the rotary joint through the Z-shaped pipe, and the input end of the high-pressure pump is communicated with the water tank through the PVC pipe;

[0016] The gear transmission assembly is fixedly arranged in the first mounting shell and connected with the connecting pipe.

[0017] Further, the right end of the first mounting shell is provided with a blocking plate, and the blocking plate is provided with a through hole allowing the connecting pipe to pass through and matching the diameter of the connecting pipe.

[0018] Further, the plug-off cutter head is provided with bristles, and the bristles are distributed alternately with the water injection holes.

[0019] Further, the inner wall of the water injection cavity is made of high-strength alloy steel.

[0020] Further, the water injection hole is a fan-shaped or conical hole with a diameter of 1.5-2 mm.

[0021] Further, the inner wall of the water injection hole is coated with tungsten carbide or ceramic.

[0022] Compared with the prior art, the device has the following beneficial effects:

[0023] Compared with the prior art, the device can continuously feed the pipe heat exchanger when the inner wall of the pipe heat exchanger is dredged, and the driving structure for driving the dredging assembly to operate does not need to stop, so that the operation process is more smooth and less likely to have safety hazards, and the dredging process effect of the pipe heat exchanger is better. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the bristle installation;

[0026] Reference signs:

[0027] 1, first mounting shell; 2, second mounting shell; 3, circular ring; 4, connecting pipe; 5, plug-off cutter head; 6, water injection hole; 7, rotary joint; 8, Z-shaped pipe; 9, high-pressure pump; 10, PVC pipe; 11, gear transmission assembly; 12, blocking plate; 13, bristle. DETAILED DESCRIPTION

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0029] like Figure 1 As shown, a tubular heat exchanger unblocking device includes a first mounting shell 1, a second mounting shell 2, a ring 3, a connecting pipe 4, a plugging cutter head 5, a water injection chamber (not shown in the figure), a water spray hole 6, a rotary joint 7, a Z-shaped pipe 8, a high-pressure pump 9, a PVC pipe 10, and a gear transmission assembly 11 (the working principle of which is prior art and will not be described).

[0030] The first mounting shell 1 and the second mounting shell 2 are fixedly connected, and the right end of the first mounting shell 1 is open;

[0031] Several circular rings 3 are fixed inside the first mounting shell 1, and a connecting pipe 4 is rotatably connected to the central hole of the circular rings 3 via a bearing.

[0032] The blocking cutter head 5 is connected to one end of the connecting pipe 4, which is open at both ends;

[0033] The water injection chamber is located inside the plugging cutter head 5 and is connected to the inside of the connecting pipe 4.

[0034] Several water spray holes 6 are opened on the plugging cutter head 5 and the water spray holes 6 are connected to the water injection chamber;

[0035] The rotary joint 7 is connected to the other end of the connecting pipe 4;

[0036] The high-pressure pump 9 is fixed inside the second mounting housing 2. The output end of the high-pressure pump 9 is connected to the rotary joint 7 through the Z-shaped pipe 8. The input end of the high-pressure pump 9 is connected to the water tank (not shown in the figure) through the PVC pipe 10.

[0037] The gear transmission assembly 11 is fixed inside the first mounting housing 1 and connected to the connecting pipe 4.

[0038] To prevent the high-pressure water flow from causing the blockage cutter head 5 to break, the solution was specifically optimized, and the inner wall of the water injection chamber was made of high-strength alloy steel.

[0039] Secondly, in order to reduce the probability of particulate matter stagnation and blockage of the water injection hole, improve the flow efficiency, the water injection hole 6 adopts a fan-shaped or conical hole with a diameter of 1.5-2mm to reduce the turbulent resistance, and at the same time, after the subsequent completion of the pipe desilting, the device can be taken out as a whole, and then the flushing and cleaning can be carried out to flush out a small amount of particles accumulated in the water injection hole.

[0040] Further optimization of the above embodiment, the inner wall of the water injection hole 6 is coated with tungsten carbide or ceramic to resist the phenomenon of hole diameter deformation caused by debris friction.

[0041] It should be noted that the high-pressure pump 9 and the gear transmission assembly 11 are electrically connected with the controller.

[0042] The working process of the utility model is:

[0043] First, the second installation shell 2 is inserted into one of the pipe heat exchangers, and then the controller controls the gear transmission assembly 11 to work to realize the high-speed rotation of the plug cutter head, and then the PVC pipe is manually inserted into the pipe, the PVC pipe will not bend when feeding into the pipe, and the pipe wall dirt can be cleaned and desilted under the continuous movement of the plug cutter head, and finally the plug cutter head 5 will be taken out from the other end of the pipe.

[0044] While desilting the dirt on the inner wall of the pipe, the controller controls the high-pressure pump 9 to work to suck the water in the water tank into the water injection cavity, and then the water flow is rotated and sprayed from the water injection hole 6 in multiple directions to further improve the desilting effect of the pipe, and the desilted dirt can be flushed out from both ends of the pipe, thereby reducing the labor intensity of subsequent cleaning of the dirt fallen on the inner wall of the pipe.

[0045] Then, the above process is repeated to desilt the several pipes of the pipe heat exchanger in turn, thereby ensuring the normal use of the pipe heat exchanger.

[0046] In some embodiments, as shown in Figure 2 The right end of the first installation shell 1 is movably mounted with a blocking plate 12, and a through hole is formed in the blocking plate 12 to allow the connecting pipe 4 to pass through and be adapted in diameter to the connecting pipe 4; the through hole is not shown in the figure; this embodiment can reduce the amount of dirt cleaned during the pipe desilting process into the first installation shell 1, thereby prolonging the time period for maintaining the device.

[0047] In other embodiments, as shown in Figure 2As shown, the brush 13 is arranged on the plug removing tool head 5 and is staggered with the water spraying holes 6, the plug removing tool head 5 is used to quickly crush hard blockages (such as water scale, rust), at the same time, the nylon / steel wire brush 13 is used to remove residual soft scale, the broken-peeling staged treatment process is realized, and the dredging effect of the tube heat exchanger is better.

[0048] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A tube heat exchanger unblocking device, characterized by, The utility model relates to a kind of water injection devices, including first installation shell (1), second installation shell (2), circular ring (3), connecting pipe (4), plug cutter head (5), water injection cavity, water injection hole (6), rotary joint (7), Z-shaped pipe (8), high-pressure pump (9), PVC pipe (10) and gear drive assembly (11), The first installation shell (1) and the second installation shell (2) are fixedly connected, and the right end of the first installation shell (1) is open; A plurality of circular rings (3) are fixedly arranged inside the first installation shell (1), and the connecting pipe (4) is rotatably connected to the central hole of the circular ring (3); The plug cutter head (5) is connected to one end of the connecting pipe (4) with open ends; The water injection cavity is arranged inside the plug cutter head (5) and is connected to the inside of the connecting pipe (4); A plurality of water injection holes (6) are arranged on the plug cutter head (5) and are connected to the water injection cavity; The rotary joint (7) is connected to the other end of the connecting pipe (4); The high-pressure pump (9) is fixedly arranged in the second installation shell (2), the output end of the high-pressure pump (9) is connected to the rotary joint (7) through the Z-shaped pipe (8), and the input end of the high-pressure pump (9) is connected to the water tank through the PVC pipe (10); The gear drive assembly (11) is fixedly arranged in the first installation shell (1) and is connected to the connecting pipe (4).

2. A tube heat exchanger unblocking device according to claim 1, characterized in that The right end of the first installation shell (1) is provided with a blocking plate (12), and the blocking plate (12) is provided with a through hole allowing the connecting pipe (4) to pass through and matching the diameter of the connecting pipe.

3. A tube heat exchanger unblocking device according to claim 1, wherein The plug cutter head (5) is provided with bristles (13), and the bristles (13) are distributed alternately with the water injection holes (6).

4. A tube heat exchanger unblocking device according to claim 1, wherein The inner wall of the water injection cavity is made of high-strength alloy steel.

5. A tube heat exchanger cleaning device according to claim 1, wherein The water injection hole (6) is a fan-shaped or conical hole with a diameter of 1.5-2 mm.

6. A tube heat exchanger cleaning device according to claim 5, wherein The inner wall of the water injection hole (6) is coated with tungsten carbide or ceramic plating.

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