Self-cleaning tubular heat exchanger

Abstract

The invention relates to the technical field of tubular heat exchangers, in particular to a self-cleaning tubular heat exchanger, which comprises a heat exchange mechanism, a heat exchange mechanism, a heat exchange mechanism, a heat exchange mechanism, a heat exchange mechanism and a heat exchange mechanism, and is characterized in that the heat exchange mechanism comprises a heat exchange pipe fitting and a condensate water guide part positioned on the outer side of the heat exchange pipe fitting; the cleaning mechanism comprises a transmission part located in the heat exchange pipe fitting and a cleaning part connected with the transmission part. Cooling water is injected into the heat exchange pipe fitting, then high-temperature and high-pressure gas is introduced into the heat exchange pipe fitting, the cooling water exchanges heat with the high-temperature and high-pressure gas, the high-temperature and high-pressure gas is cooled to become low-temperature and high-pressure gas and then is led out, and the high-temperature and high-pressure gas is cooled; condensate water generated by high-temperature and high-pressure gas during heat exchange is guided out through the condensate water flow guide piece under pushing of the high-pressure gas, the condensate water flow guide piece is controlled to enable the transmission piece to work in an opposite rotation mode, and meanwhile the transmission piece works to drive the cleaning piece to work. And the cleaning piece works to clean scale on the inner wall of the heat exchange pipe in the heat exchange pipe fitting.

Description

Technical Field

[0001] The invention relates to the technical field of tubular heat exchangers, and in particular to a self-cleaning tubular heat exchanger. Background Art

[0002] Shell and tube heat exchanger is also called shell and tube heat exchanger. It is a wall heat exchanger that uses the wall of the tube bundle enclosed in the shell as the heat transfer surface. This heat exchanger has a simple structure, low cost, wide flow cross section, and is easy to clean scale; but the heat transfer coefficient is low and the floor space is large. It can be made of various structural materials (mainly metal materials), can be used under high temperature and high pressure, and is the most widely used type.

[0003] However, when the existing shell and tube heat exchanger is performing heat exchange, since the cooling water is mostly supplied by city tap water, and the tap water contains a large amount of scale, scale is easily accumulated on the inner wall of the heat exchange pipe in the shell and tube heat exchanger over time, and the scale will affect the heat exchange effect of the shell and tube heat exchanger. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the problem that scale is accumulated on the inner wall of the heat exchange pipe of the above-mentioned existing self-cleaning tubular heat exchanger, which affects the heat exchange effect, the present invention is proposed.

[0006] Therefore, an object of the present invention is to provide a self-cleaning tubular heat exchanger.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: a self-cleaning tubular heat exchanger, comprising a heat exchange mechanism, including a heat exchange tube, and a condensate guide located outside the heat exchange tube; and a cleaning mechanism, including a transmission member located inside the heat exchange tube, and a cleaning member connected to the transmission member.

[0008] As a preferred embodiment of the self-cleaning tubular heat exchanger described in the present invention, the heat exchange pipe fittings include an outer wall of a heat exchange tube, the interior of the outer wall of the heat exchange tube is divided into H zone, I zone, J zone, K zone and L zone from left to right by a number of partitions; a gas inlet is provided at the right end of the outer wall of the heat exchange tube located at the lower side of zone I, and a gas outlet is provided at the left end of the outer wall of the heat exchange tube located at the upper side of zone I; a first condensate outlet is also provided at the left end of the outer wall of the heat exchange tube located at the lower side of zone I, and the positions of the gas outlet and the first condensate outlet are symmetrical up and down; a second condensate outlet is provided on the upper side of zone L on the outer wall of the heat exchange tube; the condensate guide member includes a three-way valve, a condensate transfer pipe is provided at one end of the three-way valve, and a first connecting pipe and a second connecting pipe are respectively provided at the upper end of the three-way valve; the condensate transfer pipe and the first condensate outlet are connected to each other, and the first connecting pipe and the second connecting pipe are symmetrically connected to the pipeline on the lower side of zone L front and back.

[0009] As a preferred solution of the self-cleaning tubular heat exchanger of the present invention, a cooling water inlet is provided on the upper side of the J zone on the outer wall of the heat exchange tube, and a cooling water outlet is provided on the lower side of the H zone on the outer wall of the heat exchange tube.

[0010] As a preferred embodiment of the self-cleaning tubular heat exchanger of the present invention, a plurality of heat exchange pipes and baffles are provided on the outer wall of the heat exchange pipe in zone I, and the plurality of heat exchange pipes connect zone H and zone J to each other.

[0011] As a preferred solution of the self-cleaning tubular heat exchanger described in the present invention, wherein: the transmission member includes a fan blade located in the L zone, a transmission rod is provided through the middle of the fan blade, and one end of the transmission rod is located in the K zone and a first gear is provided; the transmission rod is fixed to the outer wall side plate of the heat exchange tube and the partition between the L zone and the K zone through a bearing.

[0012] As a preferred solution of the self-cleaning tubular heat exchanger described in the present invention, the cleaning member includes a first screw, one end of which is provided with a second gear and a third gear from left to right in sequence; the first screw is fixed to the side plate of the outer wall of the heat exchange tube and the partition between zone K and zone J through a bearing; the second gear and the first gear are meshed with each other.

[0013] As a preferred solution of the self-cleaning tubular heat exchanger described in the present invention, wherein: the cleaning member also includes a plurality of second lead screws, a fourth gear is provided at one end of each of the plurality of second lead screws, and a plurality of the fourth gears are distributed on the outside of the third gear in a circumferential meshing manner; the second lead screws are fixed to the outer wall side plates of the heat exchange tube and the partitions between zone K and zone J through bearings; the cleaning member also includes a slider slidably arranged on the outside of the first lead screw and the plurality of second lead screws; the thread directions of the second lead screw and the first lead screw are opposite; bristles are provided on the outside of the slider, and the bristles on the outside of the slider gradually increase from both sides to the middle.

[0014] As a preferred solution of the self-cleaning tubular heat exchanger of the present invention, it further comprises a scraping mechanism and a plurality of driving members located outside the cleaning member, and a plurality of scraping members located on a plurality of the driving members.

[0015] As a preferred solution of the self-cleaning tubular heat exchanger described in the present invention, the driving member includes a driving blade, an outer ring of a locating bearing is fixed on the inner side of the driving blade, and the inner ring of the locating bearing is respectively fixed to one end of the outer side of the first screw and several second screws.

[0016] As a preferred solution of the self-cleaning tubular heat exchanger described in the present invention, wherein: the driving member also includes an inner gear ring, a plurality of first positioning blocks are provided on the outer side of the inner gear ring, one end of the plurality of first positioning blocks is connected to one end of an arc-shaped guide rod, the other end of the arc-shaped guide rod is provided with a limit ring, and a spring is also provided on the outer side of the arc-shaped guide rod; a plurality of second positioning blocks are also provided on the outer side of the driving blade, and the plurality of second positioning blocks are slidably arranged on the arc-shaped guide rod, and the spring is located in the middle position of the first positioning block and the second positioning block; a plurality of positioning circular holes are also provided on the driving blade; the wiper member includes a wiper blade, one end of the wiper blade is connected to one end of a connecting long rod, and the other end of the connecting long rod is connected to a driven gear; the connecting long rod is embedded in the positioning circular hole on the driving blade, and the driven gear and the inner gear ring are meshed with each other; the wiper blade can switch between the retracted state L and the wiper state M.

[0017] The beneficial effects of the present invention are as follows: cooling water is injected into the heat exchange pipe fittings, and then high-temperature and high-pressure gas is introduced into the heat exchange pipe fittings, heat exchange occurs between the cooling water and the high-temperature and high-pressure gas, and the high-temperature and high-pressure gas is cooled to become low-temperature and high-pressure gas and then discharged, which plays a cooling role on the high-temperature and high-pressure gas;

[0018] Condensed water generated by high-temperature and high-pressure gas during heat exchange is discharged through the condensate guide member under the push of the high-pressure gas. Controlling the condensate guide member can make the transmission member work in the opposite rotation mode. At the same time, the operation of the transmission member drives the cleaning member to work, and the operation of the cleaning member cleans the scale on the inner wall of the heat exchange tube in the heat exchange tube member. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of the self-cleaning tubular heat exchanger of the present invention.

[0021] Figure 2 This is a schematic diagram of the exploded structure of the self-cleaning tubular heat exchanger of the present invention.

[0022] Figure 3 It is a schematic diagram of the heat exchange mechanism structure of the self-cleaning tubular heat exchanger of the present invention.

[0023] Figure 4 This is a schematic diagram of the cleaning mechanism structure of the self-cleaning tubular heat exchanger of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the scraping mechanism of the self-cleaning tubular heat exchanger of the present invention.

[0025] Figure 6 It is a schematic diagram of the exploded structure of the scraping mechanism described in the self-cleaning tubular heat exchanger of the present invention.

[0026] Figure 7 This is a schematic diagram of the structure of the scraper blades described in the self-cleaning tubular heat exchanger of the present invention. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0031] Example 1

[0032] Reference Figure 1 , provides a schematic diagram of the overall structure of a self-cleaning tubular heat exchanger, such as Figure 1-3 A self-cleaning tubular heat exchanger includes a heat exchange mechanism 100 including a heat exchange tube 101 and a condensate guide 102 located outside the heat exchange tube 101; and a cleaning mechanism 200 including a transmission member 201 located inside the heat exchange tube 101 and a cleaning member 202 connected to the transmission member 201;

[0033] The cooling water is injected into the heat exchange pipe 101, and then the high-temperature and high-pressure gas is introduced into the heat exchange pipe 101, and the cooling water and the high-temperature and high-pressure gas exchange heat. The high-temperature and high-pressure gas is cooled to become low-temperature and high-pressure gas and then discharged, which plays a cooling role on the high-temperature and high-pressure gas;

[0034] The condensed water generated by the high-temperature and high-pressure gas during heat exchange is discharged through the condensed water guide 102 under the push of the high-pressure gas. Controlling the condensed water guide 102 can make the transmission member 201 work in the opposite rotation mode. At the same time, the operation of the transmission member 201 drives the cleaning member 202 to work. The operation of the cleaning member 202 cleans the scale on the inner wall of the heat exchange tube in the heat exchange tube 101.

[0035] Specifically, the heat exchange pipe 101 includes a heat exchange pipe outer wall 101a, and the interior of the heat exchange pipe outer wall 101a is divided into H zone, I zone, J zone, K zone, and L zone from left to right by a plurality of partitions; a gas inlet 101a-1 is provided at the right end of the heat exchange pipe outer wall 101a located at the lower side of the I zone, and a gas outlet 101a-2 is provided at the left end of the heat exchange pipe outer wall 101a located at the upper side of the I zone; a first condensate outlet 101a-3 is also provided at the left end of the heat exchange pipe outer wall 101a located at the lower side of the I zone, and the gas outlet 101a-2 and the first condensate outlet 101a-3 are connected to each other. The positions are symmetrical up and down; a second condensate outlet 101a-4 is provided on the upper side of the L zone on the outer wall 101a of the heat exchange tube; the condensate guide 102 includes a three-way valve 102a, one end of the three-way valve 102a is provided with a condensate transfer pipe 102a-1, and the upper end of the three-way valve 102a is respectively provided with a first connecting pipe 102a-2 and a second connecting pipe 102a-3; the condensate transfer pipe 102a-1 and the first condensate outlet 101a-3 are connected to each other, and the first connecting pipe 102a-2 and the second connecting pipe 102a-3 are symmetrically connected to the pipeline on the lower side of the L zone front and back;

[0036] Among them, the gas inlet 101a-1 and the outer wall 101a of the heat exchange tube are interconnected and fixedly connected, the gas outlet 101a-2 and the outer wall 101a of the heat exchange tube are interconnected and fixedly connected, the first condensate outlet 101a-3 and the outer wall 101a of the heat exchange tube are interconnected and fixedly connected, the second condensate outlet 101a-4 and the outer wall 101a of the heat exchange tube are interconnected and fixedly connected, and the three-way valve 102a connects zone I and zone L to each other.

[0037] Specifically, a cooling water inlet 101b is provided on the upper side of the heat exchange tube outer wall 101a located in the J zone, and a cooling water outlet 101b-1 is provided on the lower side of the heat exchange tube outer wall 101a located in the H zone;

[0038] The cooling water inlet 101b and the outer wall 101a of the heat exchange tube are interconnected and fixedly connected, and the cooling water outlet 101b-1 and the outer wall 101a of the heat exchange tube are interconnected and fixedly connected.

[0039] Furthermore, a plurality of heat exchange pipes 101c and baffles 101c-1 are provided on the outer wall 101a of the heat exchange tube in the zone I, and the plurality of heat exchange pipes 101c interconnect the zone H and the zone J;

[0040] Among them, a plurality of baffles 101c-1 are fixed on the partition plate inside the outer wall 101a of the heat exchange tube, and a plurality of heat exchange pipes 101c are fixed on the baffles 101c-1 and the partition plate inside the outer wall 101a of the heat exchange tube.

[0041] Operation process: Cooling water is introduced into the J zone through the cooling water inlet 101b, and the cooling water is introduced into the H zone through a number of heat exchange pipes 101c and then discharged through the cooling water outlet 101b-1;

[0042] The high-temperature and high-pressure gas is introduced into the zone I through the gas inlet 101a-1, and the high-temperature and high-pressure gas passes through a plurality of baffles 101c-1 and then is discharged through the gas outlet 101a-2;

[0043] When the high-temperature and high-pressure gas moves in zone I, the heat of the gas is exchanged with the cooling water in the heat exchange pipe 101c, thereby cooling down to low-temperature and high-pressure gas;

[0044] At the same time, condensed water will be generated on the outer wall of the heat exchange pipe 101c, which will affect the heat exchange effect;

[0045] First, the gas outlet 101a-2 is controlled to be closed or the gas output is reduced;

[0046] Secondly, there are two specific processes for condensed water extraction:

[0047] 1. Control the three-way valve 102a to work, so that the gas and condensed water entering the condensed water transfer pipe 102a-1 enter the first connecting pipe 102a-2 through the three-way valve 102a, and the gas and condensed water enter the L zone after passing through the first connecting pipe 102a-2, and then pass through the L zone and are discharged through the second condensed water outlet 101a-4;

[0048] 2. Control the operation of the three-way valve 102a so that the gas and condensed water entering the condensed water transfer pipe 102a-1 enter the second connecting pipe 102a-3 through the three-way valve 102a. The gas and condensed water enter the L zone after passing through the second connecting pipe 102a-3, and then are discharged through the L zone through the second condensed water outlet 101a-4.

[0049] Example 2

[0050] Reference Figure 1-4 , this embodiment is different from the first embodiment in that: the transmission member 201 includes a fan blade 201a located in the L zone, a transmission rod 201a-1 is provided through the middle of the fan blade 201a, and one end of the transmission rod 201a-1 is provided with a first gear 201a-2 in the K zone; the transmission rod 201a-1 is fixed to the side plate of the outer wall 101a of the heat exchange tube and the partition between the L zone and the K zone through a bearing;

[0051] The fan blade 201a and the transmission rod 201a-1 are fixedly connected, and the first gear 201a-2 is fixed to one end of the transmission rod 201a-1.

[0052] Specifically, the cleaning member 202 includes a first screw 202a, and one end of the first screw 202a is provided with a second gear 202a-1 and a third gear 202a-2 from left to right in sequence; the first screw 202a is fixed to the side plate of the outer wall 101a of the heat exchange tube and the partition between the K zone and the J zone through a bearing; the second gear 202a-1 and the first gear 201a-2 are meshed with each other;

[0053] The second gear 202a-1 and the third gear 202a-2 are both fixed on the first lead screw 202a.

[0054] Furthermore, the cleaning member 202 further comprises a plurality of second lead screws 202b, each of which has a fourth gear 202b-1 at one end, and the plurality of fourth gears 202b-1 are distributed on the outside of the third gear 202a-2 in a surrounding meshing manner; the second lead screw 202b is fixed to the side plate of the outer wall 101a of the heat exchange tube and the partitions between the K zone and the J zone through a bearing; the cleaning member 202 further comprises a slider 202c slidably arranged on the outside of the first lead screw 202a and the plurality of second lead screws 202b; the thread directions of the second lead screw 202b and the first lead screw 202a are opposite; bristles are arranged on the outside of the slider 202c, and the bristles on the outside of the slider 202c gradually increase from both sides to the middle;

[0055] Among them, the fourth gear 202b-1 is fixed to one end of the second lead screw 202b, the slider 202c is matched with the second lead screw 202b and the first lead screw 202a, and the bristles are fixed to the outer side of the slider 202c.

[0056] The rest of the structure is the same as that of Example 1.

[0057] Operation process: when the gas and condensed water enter the L zone after passing through the first connecting pipe 102a-2, the gas and condensed water push the fan blade 201a to rotate forward, the fan blade 201a rotates forward so that the transmission rod 201a-1 drives the first gear 201a-2 to rotate forward, the first gear 201a-2 rotates forward so that the second gear 202a-1 rotates reversely, the second gear 202a-1 rotates reversely so that the first lead screw 202a and the third gear 202a-2 rotate reversely, the first lead screw 202a rotates reversely so that the slider 202c moves laterally from left to right along the first lead screw 202a, and at the same time, the third gear 202a-2 rotates reversely so that the fourth gears 202b-1 drive the second lead screw 202b to rotate forward, and the second lead screw 202b rotates forward so that the slider 202c moves laterally from left to right along the second lead screw 202b;

[0058] When the gas and condensed water enter the L zone after passing through the second connecting pipe 102a-3, the gas and condensed water push the fan blade 201a to reverse, and the reversal of the fan blade 201a causes the transmission rod 201a-1 to drive the first gear 201a-2 to reverse, and the reversal of the first gear 201a-2 drives the second gear 202a-1 to rotate forward, and the forward rotation of the second gear 202a-1 drives the first lead screw 202a and the third gear 202a-2 to rotate forward, and the forward rotation of the first lead screw 202a causes the slider 202c to move laterally from right to left along the first lead screw 202a, and at the same time, the forward rotation of the third gear 202a-2 causes the plurality of fourth gears 202b-1 to drive the second lead screw 202b to reverse, and the reversal of the second lead screw 202b causes the slider 202c to move laterally from right to left along the second lead screw 202b;

[0059] When the slider 202c moves, the bristles on the outer side of the slider 202c clean the inner wall of the heat exchange pipe 101c, so that the scale is cleaned off, thereby preventing the scale from affecting the heat exchange effect of the heat exchange pipe 101c.

[0060] Example 3

[0061] Reference Figure 1-7 , this embodiment is different from the above embodiment in that: it also includes a scraping mechanism 300, including a plurality of driving members 301 located outside the cleaning member 202, and a plurality of scraping members 302 located on the plurality of driving members 301;

[0062] The driving member 301 rotates under the drive of the water flow, and the rotation of the driving member 301 drives the scraping member 302 to rotate. The rotation of the scraping member 302 can clean the scale on the cleaning member 202.

[0063] Specifically, the driving member 301 includes a driving blade 301a, an outer ring of a positioning bearing 301a-1 is fixed to the inner side of the driving blade 301a, and the inner ring of the positioning bearing 301a-1 is respectively fixed to one end of the outer side of the first lead screw 202a and a plurality of second lead screws 202b;

[0064] The driving blade 301a is fixed to the first lead screw 202a and a plurality of second lead screws 202b through a positioning bearing 301a-1.

[0065] Furthermore, the driving member 301 also includes an inner gear ring 301b, and a plurality of first positioning blocks 301b-1 are provided on the outer side of the inner gear ring 301b, and one end of the plurality of first positioning blocks 301b-1 is connected to one end of an arc-shaped guide rod 301b-2, and the other end of the arc-shaped guide rod 301b-2 is provided with a limiting ring 301b-3, and a spring 301b-4 is also provided on the outer side of the arc-shaped guide rod 301b-2; a plurality of second positioning blocks 301a-2 are also provided on the outer side of the driving leaf 301a, and the plurality of second positioning blocks 301a-2 are slidably provided on the arc-shaped guide rod 301b-2, and the spring 301b-4 is located at the first positioning blocks The middle position of the positioning block 301b-1 and the second positioning block 301a-2; the driving blade 301a is also provided with a plurality of positioning circular holes 301a-3; the wiping member 302 comprises a wiping blade 302a, one end of which is connected to one end of a connecting rod 302a-1, and the other end of the connecting rod 302a-1 is connected to a driven gear 302a-2; the connecting rod 302a-1 is embedded in the positioning circular hole 301a-3 on the driving blade 301a, and the driven gear 302a-2 and the inner gear ring 301b are meshed with each other; the wiping blade 302a can switch between the retracted state L and the wiping state M;

[0066] Among them, a plurality of first positioning blocks 301b-1 are fixed to the outer side of the inner gear ring 301b, one end of the arc-shaped guide rod 301b-2 is fixed to one end of the first positioning block 301b-1, and the other end of the arc-shaped guide rod 301b-2 is fixed to the limiting ring 301b-3;

[0067] The second positioning block 301a-2 is fixed to the outside of the driving blade 301a, one end of the connecting rod 302a-1 is fixed to one end of the wiping blade 302a, and the other end of the connecting rod 302a-1 is fixed to the driven gear 302a-2;

[0068] When the slider 202c is immersed in the scraping leaf 302a, the slider 202c changes from sliding to rotating, and the slider 202c rotates along with the first screw 202a and the second screw 202b, so that the scraping leaf 302a is in the scraping state M, thereby scraping the bristles on the outer side of the slider 202c;

[0069] When the wiping leaf 302a changes from the retracted state L to the wiping state M, the wiping leaf 302a drives the driven gear 302a-2 to rotate by connecting the long rod 302a-1, and the rotation of the driven gear 302a-2 drives the inner gear ring 301b to rotate. The rotation of the inner gear ring 301b causes the first positioning block 301b-1 to drive the arc guide rod 301b-2 and the limit ring 301b-3 to move. The movement of the first positioning block 301b-1 causes the spring 301b-4 to be squeezed on the driven gear 302a-2. Under the action of the spring 301b-4, the wiping leaf 302a will generate a reverse rotation force to cause the wiping leaf 302a to change from the wiping state M to the retracted state L, so that the bristles on the outer side of the slider 202c can be better wiped, so that the bristles on the outer side of the slider 202c can still be wiped when they are agglomerated and retracted.

[0070] The rest of the structure is the same as that of Example 2.

[0071] Operation process: When the cooling water flows from the J area to the H area, the water flow will drive the driving blade 301a to rotate, and the driving blade 301a rotates to make the wiping blade 302a rotate;

[0072] When the slider 202c moves to the right end of the second screw 202b, the slider 202c sinks into the interior of the scraping leaf 302a. After the slider 202c is stuck in the interior of the scraping leaf 302a, the slider 202c changes from sliding to rotating, and the scale attached to the bristles on the outer side of the slider 202c is removed by the scraping leaf 302a in the scraping state M, thereby cleaning the bristles on the outer side of the slider 202c.

[0073] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0074] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0075] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0076] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A self-cleaning tubular heat exchanger, characterized in that: include, A heat exchange mechanism (100) comprises a heat exchange pipe (101), a condensate guide (102) located outside the heat exchange pipe (101); and The cleaning mechanism (200) comprises a transmission member (201) located inside the heat exchange pipe member (101), and a cleaning member (202) connected to the transmission member (201).

2. The self-cleaning tubular heat exchanger according to claim 1, characterized in that: The heat exchange pipe (101) comprises a heat exchange pipe outer wall (101a), and the interior of the heat exchange pipe outer wall (101a) is divided into an H zone, an I zone, a J zone, a K zone, and an L zone from left to right in sequence by a plurality of partitions; A gas inlet (101a-1) is provided on the right end of the outer wall (101a) of the heat exchange tube located at the lower side of zone I, and a gas outlet (101a-2) is provided on the left end of the outer wall (101a) of the heat exchange tube located at the upper side of zone I; A first condensed water outlet (101a-3) is also provided on the left end of the outer wall (101a) of the heat exchange tube located at the lower side of zone I, and the positions of the gas outlet (101a-2) and the first condensed water outlet (101a-3) are symmetrical in the vertical direction; A second condensate water outlet (101a-4) is provided on the upper side of the L zone on the outer wall (101a) of the heat exchange tube; The condensate guide member (102) comprises a three-way valve (102a), one end of the three-way valve (102a) is provided with a condensate transfer pipe (102a-1), and the upper end of the three-way valve (102a) is provided with a first connecting pipe (102a-2) and a second connecting pipe (102a-3); The condensate transfer pipe (102a-1) and the first condensate outlet (101a-3) are connected to each other, and the first connecting pipe (102a-2) and the second connecting pipe (102a-3) are symmetrically connected to the pipeline on the lower side of the L zone.

3. The self-cleaning tubular heat exchanger according to claim 2, characterized in that: A cooling water inlet (101b) is provided on the upper side of the J zone on the outer wall (101a) of the heat exchange tube, and a cooling water outlet (101b-1) is provided on the lower side of the H zone on the outer wall (101a) of the heat exchange tube.

4. The self-cleaning tubular heat exchanger according to claim 3, characterized in that: A plurality of heat exchange pipes (101c) and baffles (101c-1) are also provided on the outer wall (101a) of the heat exchange tube in zone I, and the plurality of heat exchange pipes (101c) connect zone H and zone J to each other.

5. The self-cleaning tubular heat exchanger according to claim 4, characterized in that: The transmission member (201) comprises a fan blade (201a) located in the L zone, a transmission rod (201a-1) is provided through the middle of the fan blade (201a), and one end of the transmission rod (201a-1) is located in the K zone and is provided with a first gear (201a-2); The transmission rod (201a-1) is fixed to the side plate of the outer wall (101a) of the heat exchange tube and the partition plates between the L zone and the K zone through bearings.

6. The self-cleaning tubular heat exchanger according to claim 5, characterized in that: The cleaning member (202) comprises a first lead screw (202a), and one end of the first lead screw (202a) is provided with a second gear (202a-1) and a third gear (202a-2) in sequence from left to right; The first screw (202a) is fixed to the side plate of the outer wall (101a) of the heat exchange tube and the partition plate between the K zone and the J zone through a bearing; The second gear (202a-1) and the first gear (201a-2) are meshed with each other.

7. The self-cleaning tubular heat exchanger according to claim 6, characterized in that: The cleaning member (202) further comprises a plurality of second lead screws (202b), one end of each of the plurality of second lead screws (202b) being provided with a fourth gear (202b-1), and the plurality of fourth gears (202b-1) being distributed on the outside of the third gear (202a-2) in a surrounding meshing manner; The second lead screw (202b) is fixed to the side plate of the outer wall (101a) of the heat exchange tube and the partition plates between the K zone and the J zone through bearings; The cleaning member (202) further comprises a sliding block (202c) slidably disposed outside the first lead screw (202a) and the plurality of second lead screws (202b); The second screw (202b) and the first screw (202a) have opposite thread directions; Brush hairs are arranged on the outer side of the slider (202c), and the brush hairs on the outer side of the slider (202c) gradually increase from both sides to the middle.

8. The self-cleaning tubular heat exchanger according to claim 7, characterized in that: It also comprises a scraping mechanism (300) and a plurality of driving members (301) located outside the cleaning member (202), and a plurality of scraping members (302) located on the plurality of driving members (301).

9. The self-cleaning tubular heat exchanger according to claim 8, characterized in that: The driving member (301) comprises a driving blade (301a), the inner side of which is fixed an outer ring of a positioning bearing (301a-1), and the inner ring of the positioning bearing (301a-1) is respectively fixed to one end of the outer side of a first lead screw (202a) and a plurality of second lead screws (202b).

10. The self-cleaning tubular heat exchanger according to claim 9, characterized in that: The driving member (301) further comprises an inner gear ring (301b), a plurality of first positioning blocks (301b-1) are arranged on the outer side of the inner gear ring (301b), one end of the plurality of first positioning blocks (301b-1) is connected to one end of an arc-shaped guide rod (301b-2), a limiting ring (301b-3) is arranged on the other end of the arc-shaped guide rod (301b-2), and a spring (301b-4) is also arranged on the outer side of the arc-shaped guide rod (301b-2); A plurality of second positioning blocks (301a-2) are also provided on the outer side of the driving blade (301a), and the plurality of second positioning blocks (301a-2) are slidably arranged on the arc-shaped guide rod (301b-2), and the spring (301b-4) is located in the middle position between the first positioning block (301b-1) and the second positioning block (301a-2); The driving blade (301a) is also provided with a plurality of positioning circular holes (301a-3); The scraping member (302) comprises a scraping blade (302a), one end of the scraping blade (302a) is connected to one end of a connecting long rod (302a-1), and the other end of the connecting long rod (302a-1) is connected to a driven gear (302a-2); The connecting long rod (302a-1) is embedded in the positioning circular hole (301a-3) on the driving blade (301a), and the driven gear (302a-2) and the inner gear ring (301b) are meshed with each other; The scraping blade (302a) can be switched between a retracted state L and a scraping state M.

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