CN114777514A

CN114777514A - Waste heat recovery condenser capable of automatically cleaning scales

Info

Publication number: CN114777514A
Application number: CN202210479664.5A
Authority: CN
Inventors: 章燕; 陶琳玲; 何玉梅; 盛芳; 章文天; 潘剑理; 王银军
Original assignee: Zhejiang Kaide Chemical Co Ltd
Current assignee: Zhejiang Kaide Chemical Co Ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-07-22
Anticipated expiration: 2042-05-05
Also published as: CN114777514B

Abstract

The invention discloses an automatic descaling waste heat recovery condenser which comprises a cooling water cavity, a first material cavity and a second material cavity, wherein a plurality of heat exchange tubes are connected between the first material cavity and the second material cavity, a liquid inlet main pipeline is controlled by a first electromagnetic directional valve to be communicated with a first liquid inlet pipeline or a second liquid inlet pipeline, a liquid outlet main pipeline is controlled by a second electromagnetic directional valve to be communicated with a first liquid outlet pipeline or a second liquid outlet pipeline, and the first material cavity is communicated with the first liquid inlet pipeline and the first liquid outlet pipeline; second material chamber intercommunication second feed liquor pipeline and second play liquid pipeline, a plurality of heat exchange tubes slide and are provided with brush body subassembly, and brush body subassembly includes the center pin, loads stake and brush hair, and the one end that an at least heat exchange tube is located first material intracavity is provided with the signal of telecommunication and triggers the subassembly, and the signal of telecommunication triggers the subassembly and is connected with controlling means. The condenser can always keep a state almost without scale in the using process, effectively improves the heat exchange efficiency, and does not need to be disassembled to clean the scale.

Description

Waste heat recovery condenser capable of automatically cleaning scale

Technical Field

The invention belongs to the technical field of chemical equipment, and particularly relates to an automatic scale-cleaning waste heat recovery condenser.

Background

In chemical production, materials need to be cooled, and a compression refrigeration cycle process exists, in which a condenser is used for cooling hot materials, and heat is transferred from the materials to another medium, such as water or air, so as to realize cooling of the materials.

From the principle of condensation, the condenser mainly transfers heat in the material with higher temperature to the cooling medium in a heat transfer mode, so that the heat is recycled. And then, the waste heat in the cooling medium is recycled, so that the utilization rate of heat can be effectively improved, and the purposes of energy conservation and emission reduction are achieved.

Based on this, chinese patent with publication number CN214333123U proposes a shell-and-tube condenser which makes full use of waste heat, and its main technical scheme is: the condenser comprises a shell, wherein a feed inlet is formed in the upper part of the shell, a discharge outlet is formed in the lower part of the shell, a condenser pipe is arranged in the shell, the condenser pipe is arranged in the shell in a bent manner, a flow guide frame is arranged in the middle of the shell and is arranged right below the feed inlet of the shell, a top flow distribution plate inclining downwards is arranged at the top of the flow guide frame, a middle flow distribution plate horizontally arranged is arranged in the middle of the flow guide frame, and a plurality of flow distribution holes are formed in the top flow distribution plate and the middle flow distribution plate; the condensation pipe extends from the inner part of the shell to the outer part of the shell; the utility model discloses a condenser pipe, including inlet pipe, condenser pipe, inlet pipe department is connected with the inlet pipe, the outside suit of inlet pipe insulation sleeve pipe, the condenser pipe is connected to the condenser pipe, is provided with the outlet in insulation sleeve pipe's the one end of keeping away from the condenser pipe.

Above-mentioned prior patent is provided with top flow distribution plate and middle part flow distribution plate respectively at the upper portion and the middle part of casing, and after the material got into from feed inlet department, because top flow distribution plate was the decurrent setting of slope, consequently the material got into after by the dispersion casing horizontal everywhere, avoided the material just vertical downward direct inflow to the casing bottom. After the material is dispersed to everywhere from the reposition of redundant personnel board of top, blocked by the reposition of redundant personnel board again, a part falls directly from the reposition of redundant personnel hole department, and another part is shunted everywhere along the reposition of redundant personnel board, the effectual area of contact that increases material and condenser pipe has improved condensation efficiency.

However, when the condenser is used for a long time, the high-temperature side of the condenser is cooled in the heat exchange process, scales are formed on the pipe wall, the pipe wall is accumulated for a long time, the thickness of the pipe wall is increased, the heat exchange efficiency is reduced, and the material circulation is not smooth.

Disclosure of Invention

The invention provides an automatic descaling waste heat recovery condenser, aiming at the defects of the prior art, the automatic descaling waste heat recovery condenser can automatically remove scale or crystals generated by cooling on the high-temperature side of a heat exchange pipeline in the operation process of the condenser, can always keep a scale-free state in the use process, effectively improves the heat exchange efficiency, and does not need to be disassembled to clean scales.

In order to solve the technical problem, the invention is solved by the following technical scheme: a waste heat recovery condenser capable of automatically cleaning scale comprises a cooling water cavity, a first material cavity and a second material cavity, wherein the first material cavity and the second material cavity are located on two sides of the cooling water cavity; the second material cavity is communicated with the second liquid inlet pipeline and the second liquid outlet pipeline, a plurality of heat exchange tubes are provided with brush body components in a sliding mode, each brush body component comprises a central shaft, a loading pile is arranged on the central shaft in a sleeved mode, a plurality of bundles of bristles are arranged on the periphery of the loading pile, two ends of the central shaft extend out of the loading pile, the inner wall of the loading pile is provided with a spiral groove, a convex column matched with the spiral groove is fixed on the central shaft, the bristles are abutted against the inner wall of the heat exchange tubes, at least one end, located in the first material cavity, of each heat exchange tube is provided with an electric signal triggering component, each electric signal triggering component comprises a waterproof shell, a touch switch is arranged in each waterproof shell, a sliding groove is formed in each waterproof shell, a reset elastic piece and a moving piece are arranged in each sliding groove, and an extension rod matched with the touch switch extends laterally from each moving piece, the touch switch is connected with a control device, the material is fed into the liquid inlet channel of the second liquid inlet channel through the heat exchange tube to the liquid outlet channel of the first liquid outlet channel, when the control device receives the touch switch electric signal at every time, the first electromagnetic reversing valve and the second electromagnetic reversing valve are controlled by the control device to complete reversing, and reversing is carried out after the time set by time delay. This kind of waste heat recovery condenser of automatic snaking, when using, the material of high temperature gets into from the feed liquor trunk line, and follow the trunk line of leaving a liquid and discharge after the heat transfer with the cooling water, and the working process is: the material is from the second liquid inlet pipeline feed liquor through the heat exchange tube to the first liquid outlet pipeline to discharge liquid, the material pushes the brush body assembly to move in the process, the inner wall of the heat exchange tube is scrubbed in the moving process of the brush body assembly to prevent scaling on the inner wall, when the brush body assembly moves to the side of the first material cavity, the movable part is pushed to press the electric signal to trigger the tact switch in the assembly, the tact switch provides an electric signal for the control device, after the control device receives the electric signal, the first electromagnetic reversing valve and the second electromagnetic reversing valve are controlled by the control device in a delayed or non-delayed mode to complete reversing, after reversing, the material is discharged from the first liquid inlet pipeline feed liquor through the heat exchange tube to the second liquid outlet pipeline, meanwhile, the brush body assembly is also pushed to scrub the inner wall of the heat exchange tube in a reverse mode, the control device controls the first electromagnetic reversing valve and the second electromagnetic reversing valve to reverse reversing again, materials are fed from the second liquid inlet pipeline and discharged from the first liquid outlet pipeline through the heat exchange pipe, scales on the heat exchange pipeline are automatically scrubbed in a circulating mode, the brush body assembly continuously collides with two ends of the heat exchange pipe in the whole reciprocating moving process, the collision action end is a central shaft, when the central shaft is collided, the loading pile slides for a certain distance relative to the central shaft, the loading pile rotates relative to the central shaft due to the fact that a convex column on the central shaft is matched with a spiral groove of the loading pile, and due to different impact forces and different rotating angles, in the reciprocating moving process of the brush body assembly, the brush bristles continuously switch contact positions with the inner wall of the heat exchange pipe, all parts of the inner wall of the heat exchange pipe can be scrubbed, the almost scale-free state can be kept all the time in the using process, and heat exchange efficiency is effectively improved, and does not require disassembly to clean the scale.

The heat exchange tubes penetrate through and are fixed on the two side walls of the cooling water cavity, openings are formed in the side walls of the two ends, located on the outer side of the cooling water cavity, of the heat exchange tubes, blocking rings are arranged on the periphery of the loading pile, and when the brush body assembly slides to the end portions of the heat exchange tubes, flow channels are formed between the blocking rings and the openings at the positions of the blocking rings. The arrangement of the baffle ring can increase the thrust of the material to the brush body assembly so as to prevent the brush body assembly from being pushed by the material, and the baffle ring can completely block the cross section of the heat exchange tube and can also have a larger gap with the heat exchange tube.

The loading pile is provided with an annular groove, and the baffle ring is clamped in the annular groove. The structure is adopted to facilitate the assembly of the baffle ring.

The loading pile is formed by splicing a first loading pile (a) and a second loading pile (b), and the annular groove is close to the splicing position. The structure is adopted to further facilitate the assembly of the baffle ring.

A plurality of convex ribs are uniformly distributed in the spiral groove, and an accommodating part which is more than or equal to the convex column is arranged between every two adjacent convex ribs. The gaps between the convex ribs are used for limiting the convex columns, and the loading pile is prevented from being twisted relative to the central shaft when the loading pile is not impacted.

And two ends of the central shaft are provided with limit rings. A stop collar is provided for preventing the loading pile from slipping out of the range of the central shaft.

In the above technical solution, preferably, the cooling water cavity is connected with a water inlet pipe and a water outlet pipe.

In the above technical scheme, preferably, the first material chamber and the second material chamber are both provided with filter trays, the filter trays respectively abut against the first liquid outlet pipeline and the second liquid outlet pipeline, the filter trays are provided with mesh surfaces, and filter plates for filtering the cooling liquid are paved on the mesh surfaces.

In the above technical scheme, preferably, slag discharge ports are arranged on two sides of the first material cavity and two sides of the second material cavity, and the filtering tray is inserted into the slag discharge ports.

Compared with the prior art, the invention has the following beneficial effects: 1. the automatic washing device can automatically and circularly wash scales on the heat exchange pipeline, can keep a nearly scale-free state all the time in the using process, effectively improves the heat exchange efficiency, and does not need to be disassembled to clean the scales; 2. by adopting the structure, the brush body assembly can rotate in the process of being pushed by materials, so that the inner wall of the heat exchange tube is brushed more cleanly; 3. when the heat exchange tube is carried out to the material from two directions, because the thrust of material to the brush body subassembly can indirectly promote the guide bar, so can make the position that the rotatory in-process each brush hair of brush body subassembly was scrubbed in two directions be different, and because the change of the thrust of material to the brush body subassembly can make the scrubbing route scope axial of each brush hair enlarge for the heat exchange tube inner wall is scrubbed cleaner.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic diagram of an internal structure of the embodiment of the present invention.

Fig. 3 is a partially enlarged view of fig. 2.

FIG. 4 is a schematic view of a brush assembly according to an embodiment of the present invention.

FIG. 5 is an exploded view of a brush assembly according to an embodiment of the present invention.

Fig. 6 is a partially enlarged view of fig. 5.

Fig. 7 is a schematic cross-sectional structural diagram of an electrical signal trigger assembly according to an embodiment of the present invention.

FIG. 8 is a schematic structural diagram of a material flow state in an embodiment of the present invention.

Fig. 9 is a schematic structural diagram of another material flow state according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the following figures and embodiments: referring to fig. 1 to 9, an automatic scale removal waste heat recovery condenser comprises a cooling water cavity 1, and a first material cavity 2 and a second material cavity 3 which are positioned at two sides of the cooling water cavity 1, wherein four heat exchange tubes 4 penetrating through the cooling water cavity 1 are connected between the first material cavity 2 and the second material cavity 3, a liquid inlet main pipe 5 is controlled by a first electromagnetic directional valve 61 to be communicated with a first liquid inlet pipeline 51 or a second liquid inlet pipeline 52, a liquid outlet main pipe 7 is controlled by a second electromagnetic directional valve 62 to be communicated with a first liquid outlet pipeline 71 or a second liquid outlet pipeline 72, and the first material cavity 2 is communicated with the first liquid inlet pipeline 51 and the first liquid outlet pipeline 71; the second material cavity 3 is communicated with a second liquid inlet pipeline 52 and a second liquid outlet pipeline 72, a brush body assembly 8 is arranged in the four heat exchange tubes 4 in a sliding mode, the brush body assembly 8 comprises a central shaft 81, a loading pile 82 is sleeved on the central shaft 81, a plurality of bundles of bristles 83 are arranged on the periphery of the loading pile 82, two ends of the central shaft 81 extend out of the loading pile 82, a spiral groove 821 is formed in the inner wall of the loading pile 82, a convex column 811 matched with the spiral groove 821 is fixed on the central shaft 81, the bristles 83 abut against the inner wall of the heat exchange tubes 4, an electric signal triggering assembly 9 is arranged at one end, located in the first material cavity 2, of at least one heat exchange tube 4, the electric signal triggering assembly 9 comprises a waterproof shell 91, a light-touch switch 92 is arranged in the waterproof shell 91, a sliding groove 911 is formed in the waterproof shell 91, a resetting elastic element 93 and a movable element 94 are arranged in the sliding groove 911, an extending rod 95 matched with the light-touch switch 92 extends laterally from the movable element 94, optionally, a sealing ring may be disposed between the sliding groove 911 and the movable member 94, the tact switch 92 is connected to a control device, the material enters the liquid from the second liquid inlet pipe 52 and flows out from the first liquid outlet pipe 71 through the heat exchange pipe 4, and when the control device receives an electrical signal from the tact switch 92 each time, the control device controls the first electromagnetic directional valve 61 and the second electromagnetic directional valve 62 to complete the directional change in a delayed or non-delayed manner, and the directional change is performed after a delay set time.

This kind of waste heat recovery condenser of automatic snaking, when using, the material of high temperature gets into from the feed liquor trunk line, and follow the trunk line of leaving a liquid and discharge after the heat transfer with the cooling water, and the working process is: the material is fed from the second liquid inlet pipeline to the first liquid outlet pipeline through the heat exchange pipe to be discharged, the material pushes the brush body assembly to move in the process, the inner wall of the heat exchange pipe is scrubbed in the moving process of the brush body assembly, scaling on the inner wall is prevented, when the brush body assembly moves to the side of the first material cavity, the moving part is pushed to press the electric signal to trigger the light touch switch in the assembly, the light touch switch provides the electric signal for the control device, after the control device receives the electric signal, the first electromagnetic reversing valve and the second electromagnetic reversing valve are controlled by the control device in a delayed or non-delayed mode to complete reversing, after reversing, the material is fed from the first liquid inlet pipeline to the second liquid outlet pipeline through the heat exchange pipe to be discharged, meanwhile, the brush body assembly is also pushed to scrub the inner wall of the heat exchange pipe in a reverse mode, after a period of time delay, the control device controls the first electromagnetic reversing valve and the second electromagnetic reversing valve to be reversed, the material is fed from the second liquid inlet pipeline and flows out from the first liquid outlet pipeline through the heat exchange tube, the scale on the heat exchange pipeline is automatically scrubbed in a circulating manner, the brush body assembly continuously collides with two ends of the heat exchange tube in the whole reciprocating movement process, the collision action end is a central shaft, when the central shaft is collided, the loading pile slides for a certain distance relative to the central shaft, the loading pile rotates relative to the central shaft due to the matching of a convex column on the central shaft and a spiral groove of the loading pile, and the rotating angles are different due to different impact force, so that the contact positions of the bristles and the inner wall of the heat exchange tube are continuously switched in the reciprocating movement process of the brush body assembly, all parts of the inner wall of the heat exchange tube can be scrubbed, the almost scale-free state can be always kept in the using process, and the heat exchange efficiency is effectively improved, and does not require disassembly to clean the scale.

Under the condition that one end of each heat exchange tube 4, which is positioned in the first material cavity 2, is provided with an electric signal trigger assembly 9, the tact switch 92 in each electric signal trigger assembly 9 is pressed to start to execute delayed or non-delayed control of the first electromagnetic reversing valve and the second electromagnetic reversing valve by the control device to complete reversing; under the condition that only one end of each heat exchange tube 4 in the first material cavity 2 is provided with the electric signal trigger assembly 9, the tact switch 92 in the electric signal trigger assembly 9 is pressed to start to execute delayed or non-delayed control of the first electromagnetic reversing valve and the second electromagnetic reversing valve by the control device to complete reversing. The time delay can reduce the frequency of commutation, and in the case of only one electric signal trigger assembly 9, the brush body assembly 8 in the rest heat exchange tubes 4 without the electric signal trigger assembly 9 can be ensured to move to the end part on the side of the electric signal trigger assembly 9.

In this embodiment, four heat exchange tubes 4 are all passed through and fixed on two side walls of the cooling water cavity 1, two side walls of the heat exchange tubes 4 located outside the cooling water cavity 1 are both provided with openings 41, the periphery of the loading pile 82 is provided with a retaining ring 822, and when the brush body assembly 8 slides to the end of the heat exchange tube 4, a flow channel is formed between the retaining ring 822 and the opening 41 at the position of the retaining ring 822. The arrangement of the baffle ring can increase the thrust of the material to the brush body assembly so as to prevent the brush body assembly from being pushed by the material, and the baffle ring can completely block the cross section of the heat exchange tube and can also have a larger gap with the heat exchange tube.

In this embodiment, the loading pile 82 is provided with an annular groove 823, and the retaining ring 822 is clamped in the annular groove 823. The structure is adopted to facilitate the assembly of the baffle ring.

In this embodiment, the loading piles 82 are formed by splicing the first loading pile 8a and the second loading pile 8b, and the annular groove 823 is close to the splicing position, and the splicing mode can be threaded connection, snap connection or ultrasonic welding. The structure is adopted to further facilitate the assembly of the baffle ring.

In this embodiment, a plurality of ribs 824 are uniformly distributed in the spiral groove 821, and an accommodating portion larger than or equal to the convex column 811 is formed between adjacent ribs 824. The gaps between the convex ribs are used for limiting the convex columns, and the loading pile is prevented from being twisted relative to the central shaft when the loading pile is not impacted.

In this embodiment, two ends of the central shaft 81 are provided with a limiting ring 812. A stop collar is provided to prevent the loading peg 82 from sliding out of the confines of the central shaft 81.

In this embodiment, cooling water cavity 1 is connected with inlet channel 11 and outlet conduit 12, can replace the cooling water in cooling water cavity 1 through inlet channel 11 and outlet conduit 12 to improve heat exchange efficiency.

In this embodiment, the first material chamber 2 and the second material chamber 3 are both provided with a filter tray 13, the two filter trays 13 respectively abut against the first liquid outlet pipe 71 and the second liquid outlet pipe 72, the filter tray 13 is provided with a mesh surface 131, and a filter plate for filtering the coolant is laid on the mesh surface 131. The filter plate can filter out scaling or impurities.

In this embodiment, slag discharge ports 14 are formed in both sides of the first material chamber 2 and the second material chamber 3, and the filter tray 13 is inserted through the slag discharge ports 14. The filter plate can be easily replaced or cleaned by pulling the filter tray 13 out of the slag discharge port 14.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an automatic waste heat recovery condenser of snaking, includes cooling water cavity (1) and is located first material chamber (2) and second material chamber (3) of cooling water cavity (1) both sides, first material chamber (2) with be connected with between second material chamber (3) and pass a plurality of heat exchange tubes (4) of cooling water cavity (1), its characterized in that: the liquid inlet main pipeline (5) is controlled by a first electromagnetic directional valve (61) to be communicated with a first liquid inlet pipeline (51) or a second liquid inlet pipeline (52), the liquid outlet main pipeline (7) is controlled by a second electromagnetic directional valve (62) to be communicated with a first liquid outlet pipeline (71) or a second liquid outlet pipeline (72), and the first material cavity (2) is communicated with the first liquid inlet pipeline (51) and the first liquid outlet pipeline (71); the second material cavity (3) is communicated with the second liquid inlet pipeline (52) and the second liquid outlet pipeline (72), a plurality of brush body assemblies (8) are arranged in the heat exchange tubes (4) in a sliding mode, each brush body assembly (8) comprises a central shaft (81), a loading pile (82) is sleeved on the central shaft (81), h bristles (83) are arranged on the periphery of the loading pile (82), the two ends of the central shaft (81) extend out of the loading pile (82), spiral grooves (821) are formed in the inner wall of the loading pile (82), convex columns (811) matched with the spiral grooves (821) are fixed on the central shaft (81), the bristles (83) are abutted against the inner wall of the heat exchange tubes (4), at least one end, located in the first material cavity (2), of each heat exchange tube (4) is provided with an electric signal triggering assembly (9), each electric signal triggering assembly (9) comprises a waterproof shell (91), be provided with in waterproof casing (91) and dabble switch (92), be equipped with spout (911) on waterproof casing (91), be equipped with in spout (911) and reset elastic component (93) and moving part (94), moving part (94) side direction extend have with dabbing switch (92) complex extension rod (95), dabbing switch (92) and being connected with controlling means, the material is followed second feed liquor pipeline (52) feed liquor warp heat exchange tube (4) extremely first play liquid pipeline (71) play liquid, controlling means receives dabbing switch (92) signal of telecommunication at every turn, the delay or non-delay by controlling means control first magenetic exchange valve (61) with the switching-over is accomplished in second magenetic exchange valve (62) to commutate again after the time of delay setting.

2. The automatic descaling waste heat recovery condenser of claim 1, wherein: a plurality of heat exchange tube (4) all pass and are fixed in on the both sides wall of cooling water chamber (1), heat exchange tube (4) are located the both ends lateral wall in cooling water chamber (1) outside all is provided with opening (41), it is provided with fender ring (822) to load stake (82) periphery, brush body subassembly (8) slide extremely during the tip of heat exchange tube (4), keep off ring (822) rather than the position form the runner between opening (41).

3. An automatic descaling waste heat recovery condenser as recited in claim 2, wherein: an annular groove (823) is formed in the loading pile (82), and the blocking ring (822) is clamped in the annular groove (823).

4. An automatic scale removal waste heat recovery condenser as recited in claim 3, wherein: the loading pile (82) is formed by splicing a first loading pile (8 a) and a second loading pile (8 b), and the annular groove (823) is close to the splicing position.

5. The automatic descaling waste heat recovery condenser of claim 1, wherein: a plurality of convex ribs (824) are uniformly distributed in the spiral groove (821), and an accommodating part which is larger than or equal to the convex column (811) is arranged between every two adjacent convex ribs (824).

6. An automatic scale removal waste heat recovery condenser as recited in claim 1, wherein: and two ends of the central shaft (81) are provided with limit rings (812).

7. An automatic scale removal waste heat recovery condenser as recited in claim 1, wherein: the cooling water cavity (1) is connected with a water inlet pipeline (11) and a water outlet pipeline (12).

8. An automatic scale removal waste heat recovery condenser as recited in claim 1, wherein: the cooling liquid filtering device is characterized in that filtering trays (13) are arranged on the first material cavity (2) and the second material cavity (3), the filtering trays (13) are respectively abutted against the first liquid outlet pipeline (71) and the second liquid outlet pipeline (72), a mesh surface (131) is arranged on the filtering trays (13), and a filter plate for filtering cooling liquid is paved on the mesh surface (131).

9. An automatic scale removal waste heat recovery condenser as recited in claim 8, wherein: slag discharge openings (14) are formed in the two sides of the first material cavity (2) and the second material cavity (3), and the filtering tray (13) is inserted through the slag discharge openings (14).