A boiler heat exchanger

Abstract

The present invention relates to the technical field of boiler heat exchangers, and in particular to a boiler heat exchanger, which includes a connecting unit, including a fixed plate, a mounting assembly arranged on the right side of the fixed plate, and a heat exchange assembly arranged on the outside of the mounting assembly; the mounting assembly is used to install the heat exchange assembly with the fixed plate; the heat exchange assembly is used to realize heat exchange and perform internal self-cleaning. The beneficial effects of the present invention are to divert and guide the heat exchange fluid through the diverter plate, increase the turbulence and improve the heat exchange efficiency, and at the same time utilize the fluid flow to drive the turbine in the cleaning part to rotate, thereby driving the cleaning brush and the auxiliary brush to perform real-time self-cleaning of the inner wall of the heat exchange plate, effectively preventing impurities from depositing, and maintaining high-efficiency operation of the heat exchanger. Compared with the existing technology, the self-cleaning function of the heat exchanger does not require shutdown for complicated manual disassembly and cleaning operations, which reduces maintenance workload and downtime, and reduces maintenance costs.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler heat exchangers, in particular to a boiler heat exchanger. Background Art

[0002] In the boiler system of a power plant, the heat exchanger is a key device for achieving efficient heat transfer. Its performance directly affects the efficiency and energy consumption of the entire power generation process. The main function of the heat exchanger is to transfer the heat of the high-temperature flue gas or steam generated by the boiler to other media, such as preheating feed water and heating process fluids, to meet different process requirements.

[0003] However, during the long-term operation of traditional heat exchangers, the surface of the internal heat exchange plates is easily affected by impurities. These impurities mainly come from suspended matter, dissolved salts and other tiny particles in the heat exchange fluid. When the fluid flows between the heat exchange plates, due to temperature changes, reduced flow rate or chemical reactions, these impurities will gradually deposit and adhere to the surface of the heat exchange plates, forming a layer of dirt. The formation of dirt will not only reduce the heat exchange efficiency of the heat exchanger, resulting in energy waste and increased production costs, but also have many adverse effects on the normal operation of the heat exchanger.

[0004] In order to deal with the scaling problem inside the heat exchanger, the common cleaning methods are mainly the following: First, chemical cleaning, which uses acid, alkali and other chemical agents to dissolve the dirt, but this method will corrode the heat exchange plate and affect the service life. At the same time, it will also produce a large amount of chemical waste liquid, which will pollute the environment if not handled properly; second, mechanical cleaning, such as manually disassembling the heat exchanger and cleaning it with brushes, scrapers and other tools, or using high-pressure water jet cleaning, but these methods require regular disassembly and assembly of the heat exchanger, which not only increases the maintenance workload and downtime, but also causes the sealing gasket of the heat exchanger to be damaged due to frequent disassembly and assembly, reducing the sealing performance and service life. Summary of the Invention

[0005] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0006] Therefore, an object of the present invention is to provide a boiler heat exchanger that can clean the interior of the heat exchanger by using fluid power as a driving source while the boiler heat exchanger is performing heat exchange.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: a boiler heat exchanger, comprising a connecting unit, including a fixing plate, a mounting assembly arranged on the right side of the fixing plate, and a heat exchange assembly arranged on the left side of the mounting assembly;

[0008] The mounting assembly is used to mount the heat exchange assembly to the fixing plate; the heat exchange assembly is used to achieve heat exchange and perform internal self-cleaning of the heat exchange assembly;

[0009] The mounting assembly includes two sets of guide rails arranged on the right side of the fixing plate, brackets arranged on the right ends of the two sets of guide rails, and a clamping member arranged on the right side of the fixing plate;

[0010] The heat exchange assembly includes a heat exchange plate slidably arranged outside the two groups of guide rails, a plurality of groups of diverter plates arranged inside the heat exchange plate, and a cleaning piece arranged between each two adjacent groups of diverter plates;

[0011] The cleaning component includes a mounting groove opened in the middle of each two adjacent groups of diverter plates, a base nested inside the mounting groove, a drainage port opened on the outside of the base running through from top to bottom, a rotating shaft rotatably set inside the drainage port, a turbine set on the outside of the rotating shaft, a connecting shaft rotatably set on the outside of the base, and a cleaning brush set on the outside of the connecting shaft; the right end of the connecting shaft is fixedly connected to the left end of the rotating shaft.

[0012] As a preferred solution of the boiler heat exchanger of the present invention, auxiliary brushes are provided on both the front and rear sides of the cleaning brush, and the lengths of the two groups of auxiliary brushes are greater than the length of the cleaning brush.

[0013] As a preferred solution of the boiler heat exchanger of the present invention, wherein: a plurality of groups of the diverter plates are arranged inside the heat exchange plate in a mirror-symmetrical manner;

[0014] A sealing groove is provided on the left side of the heat exchange plate, and a sealing gasket is embedded in the sealing groove.

[0015] As a preferred solution of the boiler heat exchanger of the present invention, guide slots are provided on both upper and lower sides of the heat exchange plate, and the upper and lower ends of the heat exchange plate are slidably arranged on the outer sides of the two groups of guide rails through two groups of guide slots respectively.

[0016] As a preferred embodiment of the boiler heat exchanger of the present invention, the fixed plate includes two groups of heat exchange tubes and two groups of cold exchange tubes; the right ends of the two groups of heat exchange tubes and the two groups of cold exchange tubes are both connected to the left side of the fixed plate;

[0017] The left ends of the two groups of heat exchange tubes and the two groups of cold exchange tubes are both provided with flanges.

[0018] As a preferred solution of the boiler heat exchanger of the present invention, four groups of heat exchange holes are opened on the outer side of the heat exchange plate, and the four groups of heat exchange holes correspond to the positions of the two groups of heat exchange tubes and the two groups of cold exchange tubes respectively.

[0019] As a preferred solution of the boiler heat exchanger described in the present invention, the clamping member includes a clamping stud arranged on the right side of the fixed plate, a movable clamping plate slidably arranged on the outside of the clamping stud, and a clamping bolt threadably arranged on the outside of the clamping stud.

[0020] As a preferred embodiment of the boiler heat exchanger of the present invention, a sliding hole is provided on the outer side of the movable clamping plate, the sliding hole corresponds to the position of the clamping stud, and the movable clamping plate is slidably arranged on the outer side of the clamping stud through the sliding hole;

[0021] The clamping stud is adapted to the shape and size of the sliding hole.

[0022] As a preferred solution of the boiler heat exchanger described in the present invention, the upper and lower ends of the movable clamping plate are provided with positioning holes, and the upper and lower ends of the movable clamping plate are respectively slidably arranged on the outer sides of the two groups of guide rails through two groups of positioning holes.

[0023] Beneficial effects of the present invention: The present invention diverts and guides the heat exchange fluid through the diverter plate, increases the turbulence and improves the heat exchange efficiency, and at the same time uses the fluid flow to drive the turbine in the cleaning part to rotate, thereby driving the cleaning brush and the auxiliary brush to perform real-time self-cleaning of the inner wall of the heat exchange plate, effectively preventing impurity deposition and maintaining high-efficiency operation of the heat exchanger. Compared with the existing technology, the self-cleaning function of the heat exchanger does not require shutdown for complicated manual disassembly and cleaning operations, reduces maintenance workload and downtime, and reduces maintenance costs. At the same time, the self-cleaning inside the heat exchange plate avoids the long-term accumulation and corrosion of impurities on the surface of the heat exchange plate, reduces damage to the sealing gasket caused by frequent disassembly and assembly, and extends the service life of the heat exchange plate and the sealing gasket. The power during fluid heat exchange is used as the cleaning drive source, which reduces energy waste, improves the overall energy utilization efficiency of the power plant boiler system, and has significant energy-saving and environmental protection effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of 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 paying any creative work.

[0025] Figure 1 This is the overall structure diagram of the boiler heat exchanger.

[0026] Figure 2 This is the structural diagram of the heat exchange component of the boiler heat exchanger.

[0027] Figure 3 This is the main view of the heat exchange component of the boiler heat exchanger.

[0028] Figure 4 This is the overall structure diagram of the cleaning parts of the boiler heat exchanger.

[0029] Figure 5 This is a schematic diagram of the front and rear cross-section of the cleaning parts of the boiler heat exchanger (excluding the turbine).

[0030] Figure 6 This is a schematic diagram of the left and right cross-section of the cleaning parts of the boiler heat exchanger (excluding the turbine).

[0031] Figure 7 This is a front and back cross-sectional view of the cleaning parts of the boiler heat exchanger.

[0032] Figure 8 This is an enlarged schematic diagram of the structure of point A in Figure 7 of the boiler heat exchanger.

[0033] In the figure: 1. connecting unit; 11. fixing plate; 111. heat exchange tube; 112. cold exchange tube; 113. flange; 12. mounting assembly; 121. guide rail; 122. bracket; 123. clamping piece; 1231. clamping stud; 1232. movable clamping plate; 12321. sliding hole; 12322. positioning port; 1233. clamping bolt; 13. heat exchange assembly; 131. heat exchange plate; 1311. sealing groove; 1312. sealing gasket; 1313. guide groove; 1314. heat exchange hole; 132. diverter plate; 133. cleaning piece; 1331. mounting groove; 1332. base; 1333. drainage port; 1334. rotating shaft; 1335. turbine; 1336. connecting shaft; 1337. cleaning brush; 13371. auxiliary brush. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. 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.

[0036] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0037] Example 1, with reference to Figures 1 to 4, which is the first embodiment of the present invention, provides a boiler heat exchanger that can use fluid power as a driving source to clean the inside of the heat exchanger while performing heat exchange in the boiler heat exchanger; it includes a connecting unit 1, including a fixing plate 11, an installation component 12 arranged on the right side of the fixing plate 11, and a heat exchange component 13 arranged on the left side of the installation component 12.

[0038] Furthermore, the mounting assembly 12 is used to mount the heat exchange assembly 13 and the fixing plate 11 ; the heat exchange assembly 13 is used to realize heat exchange and perform internal self-cleaning of the heat exchange assembly 13 .

[0039] Furthermore, the mounting assembly 12 includes two sets of guide rails 121 disposed on the right side of the fixing plate 11 , a bracket 122 disposed at the right ends of the two sets of guide rails 121 , and a clamping member 123 disposed on the right side of the fixing plate 11 .

[0040] Furthermore, the heat exchange assembly 13 includes a heat exchange plate 131 slidably disposed outside the two sets of guide rails 121 , a plurality of groups of manifolds 132 disposed inside the heat exchange plate 131 , and a cleaning member 133 disposed between each two adjacent groups of manifolds 132 .

[0041] It should be noted that the number of heat exchange plates 131 is set according to specific heat exchange requirements and is at least greater than two groups, so that the cold and hot fluids flow into adjacent heat exchange plates 131 respectively; specifically, when the hot fluid flows through, the hot fluid is diverted by several diversion plates 132 to increase the heat exchange area between the heat exchange plates 131. The heat in this process is dissipated to the inside of the heat exchange plate 131 and transferred to the side of the cold fluid. When the cold fluid flows through the inside of the heat exchange plate 131, it absorbs the transferred heat, thereby cooling the hot fluid and heating the cold fluid to achieve heat exchange.

[0042] Furthermore, the cleaning part 133 includes a mounting groove 1331 opened between each two adjacent groups of diversion plates 132, a base 1332 nested inside the mounting groove 1331, a drainage port 1333 extending from top to bottom through the outside of the base 1332, a rotating shaft 1334 rotatably set inside the drainage port 1333, a turbine 1335 set outside the rotating shaft 1334, a connecting shaft 1336 rotatably set outside the base 1332, and a cleaning brush 1337 set outside the connecting shaft 1336; the right end of the connecting shaft 1336 is fixedly connected to the left end of the rotating shaft 1334.

[0043] It should be noted that the drainage port 1333 should refer to the appendix of the instruction manual. Figure 2 The directions shown in the instruction manual are as follows: Figure 4-7 Relative to Figure 3 It is an axonometric view after the cleaning member 133 is laid flat.

[0044] It should be noted that when the hot and cold fluids flow into the heat exchange plate 131, the hot and cold fluids further contact several groups of diverter plates 132. Several groups of diverter plates 132 will disperse the hot and cold fluids to increase the heat exchange contact area. At the same time, this process will slow down the fluid flow rate, and impurities mixed in the fluid will easily deposit on the surface of the diverter plate 132. Long-term accumulation of impurities will reduce the fluid circulation space, thereby affecting the heat exchange efficiency; therefore, through the cleaning part 133, when the fluid enters the heat exchange plate 131 and is diverted by the diverter plate 132, part of the fluid will pass through the drainage port 1333. Since the fluid has kinetic potential energy, when passing through the drainage port 1333, it will push the turbine 1335 set in the drainage port 1333 to rotate, and then drive the cleaning brush 1337 to clean the surface of the adjacent diverter plate 132, and the cleaned impurities will be carried out together with the fluid when it is discharged.

[0045] During use, the heat exchange plate 131 of the heat exchange assembly 13 is slidably installed on the guide rail 121 of the mounting assembly 12 and fixed by the clamping part 123; the heat exchange plate 131 is provided with a diverter plate 132 and a cleaning part 133, and the heat exchange fluid is diverted and guided through the diverter plate 132 in the heat exchange plate 131 to improve the heat exchange efficiency; the fluid flow drives the turbine 1335 in the cleaning part 133 to rotate, driving the cleaning brush 1337 and the auxiliary brush 13371 to rotate, thereby performing real-time self-cleaning of the inner wall of the heat exchange plate 131 to prevent impurities from depositing and maintain efficient operation of the heat exchanger.

[0046] In summary, the heat exchange fluid is diverted and guided by the diverter plate 132, thereby increasing the turbulence and improving the heat exchange efficiency. At the same time, the fluid flow is used to drive the turbine 1335 in the cleaning component 133 to rotate, thereby driving the cleaning brush 1337 and the auxiliary brush 13371 to perform real-time self-cleaning of the inner wall of the heat exchange plate 131. There is no need to stop the machine for complex manual disassembly and cleaning operations, which reduces maintenance workload and downtime, and reduces maintenance costs. In addition, the self-cleaning inside the heat exchange plate 131 avoids the long-term accumulation and corrosion of impurities on the surface of the heat exchange plate 131, reduces the damage to the sealing gasket 1312 caused by frequent disassembly and assembly, and extends the service life of the heat exchange plate 131 and the sealing gasket 1312. The power during fluid heat exchange is used as the cleaning drive source, which reduces energy waste and improves the overall energy utilization efficiency of the power plant boiler system.

[0047] Example 2, reference Figures 1 to 5 This is the second embodiment of the present invention, which differs from the first embodiment in that it also includes a combined installation of the heat exchange assembly 13 and improves the cleaning efficiency of the interior of the heat exchange assembly 13. In the previous embodiment, the boiler heat exchanger includes auxiliary brushes 13371 on both the front and rear sides of the cleaning brush 1337, and the length of both sets of auxiliary brushes 13371 is greater than the length of the cleaning brush 1337.

[0048] It should be noted that the cleaning brush 1337 can clean the front of the heat exchange plate 131, including the mounting surface for connection of the heat exchange plate 131, and the auxiliary brush 13371 is arranged on the side of the cleaning brush 1337. The auxiliary brush 13371 can clean the surface of the diverter plate 132 on both adjacent sides when rotating.

[0049] Furthermore, a plurality of groups of manifolds 132 are arranged inside the heat exchange plate 131 in a mirror-symmetrical manner.

[0050] It should be noted that distributing the diverter plates 132 in a mirror-symmetrical manner can make the fluid disperse more evenly, thereby evenly distributing the heat and improving the heat exchange efficiency.

[0051] Furthermore, a sealing groove 1311 is formed on the left side of the heat exchange plate 131 , and a sealing gasket 1312 is embedded in the sealing groove 1311 .

[0052] Specifically, the sealing gasket 1312 includes a main sealing ring embedded in the sealing groove 1311, and auxiliary annular sealing rings arranged around the heat exchange holes 1314 at the four corners of the heat exchange plate 131. The auxiliary annular sealing rings are connected to the main sealing rings to form a continuous closed loop. The main sealing ring and the auxiliary annular sealing rings cover the gap between the heat exchange hole 1314 and the adjacent heat exchange plate 131 to prevent the fluid from directly penetrating into the other side channel through the heat exchange hole 1314. Specifically, all fluid inlets and outlets are located on the same side of the heat exchange plate 131. The auxiliary annular sealing rings inside the adjacent heat exchange plates 131 alternately close the heat exchange holes 1314 on the left and right sides to form separate flow paths on the left and right sides, so that the cold and hot fluids can only enter the corresponding heat exchange plates 131 for heat exchange. This is a common technology in existing heat exchangers, and the specific principles will not be repeated here.

[0053] Furthermore, the clamping member 123 includes a clamping stud 1231 arranged on the right side of the fixing plate 11 , a movable clamping plate 1232 slidably arranged outside the clamping stud 1231 , and a clamping bolt 1233 threadably arranged outside the clamping stud 1231 .

[0054] Specifically, a sliding hole 12321 is opened on the outer side of the movable clamping plate 1232, and the sliding hole 12321 corresponds to the position of the clamping stud 1231. The movable clamping plate 1232 is slidably set on the outer side of the clamping stud 1231 through the sliding hole 12321; the shape and size of the clamping stud 1231 are adapted to the sliding hole 12321.

[0055] During use, a group of auxiliary brushes 13371 are added on the front and rear sides of the cleaning brush 1337, and the length of each group of auxiliary brushes 13371 is greater than the cleaning brush 1337, which can improve the cleaning efficiency; the diverter plate 132 is distributed in a mirror-symmetrical manner inside the heat exchange plate 131, so that the fluid is dispersed more evenly and the heat exchange efficiency is improved; the clamping part 123 is composed of a clamping stud 1231, a movable clamping plate 1232 and a clamping bolt 1233. The movable clamping plate 1232 is sleeved on the outside of the clamping stud 1231 through the sliding hole 12321. The lateral position of the movable clamping plate 1232 on the outside of the clamping stud 1231 can be slid to adjust the horizontal position of the movable clamping plate 1232 on the outside of the clamping stud 1231, and then fixed with the clamping bolt 1233, which is convenient for installation and removal of the heat exchange plate 131, and at the same time provides a stable clamping force to ensure that the heat exchange plate 131 is tightly connected to the fixed plate 11.

[0056] In summary, by arranging a group of auxiliary brushes 13371 on the front and rear sides of the cleaning brush 1337 respectively, and the length of each group of auxiliary brushes 13371 is greater than the cleaning brush 1337, the surfaces of the diverter plates 132 on the adjacent sides can be cleaned more comprehensively, thereby improving the cleaning efficiency. The diverter plates 132 are distributed in a mirror-symmetrical manner on the inner wall of the heat exchange plate 131, so that the fluid is dispersed more evenly, and the heat is distributed evenly, thereby further improving the heat exchange efficiency. The clamping piece 123 facilitates the installation and removal of the heat exchange plate 131, and at the same time provides a stable clamping force to ensure that multiple groups of heat exchange plates 131 are tightly connected to the fixed plate 11, thereby improving the overall stability and sealing of the heat exchanger.

[0057] Example 3, reference Figures 1 to 6 , which is the third embodiment of the present invention, provides a boiler heat exchanger, which can use fluid power as a driving source to clean the inside of the heat exchanger while performing heat exchange in the boiler heat exchanger; it includes a connecting unit 1, including a fixing plate 11, an installation component 12 arranged on the right side of the fixing plate 11, and a heat exchange component 13 arranged on the left side of the installation component 12.

[0058] Furthermore, the mounting assembly 12 is used to mount the heat exchange assembly 13 and the fixing plate 11 ; the heat exchange assembly 13 is used to realize heat exchange and perform internal self-cleaning of the heat exchange assembly 13 .

[0059] Furthermore, the mounting assembly 12 includes two sets of guide rails 121 disposed on the right side of the fixing plate 11 , a bracket 122 disposed at the right ends of the two sets of guide rails 121 , and a clamping member 123 disposed on the right side of the fixing plate 11 .

[0060] Furthermore, the heat exchange assembly 13 includes a heat exchange plate 131 slidably disposed outside the two sets of guide rails 121 , a plurality of groups of manifolds 132 disposed inside the heat exchange plate 131 , and a cleaning member 133 disposed between each two adjacent groups of manifolds 132 .

[0061] It should be noted that the number of heat exchange plates 131 is set according to specific heat exchange requirements and is at least greater than two groups, so that the cold and hot fluids flow into adjacent heat exchange plates 131 respectively; specifically, the hot fluid is diverted through a number of diverter plates 132 to increase the heat exchange area between the heat exchange plates 131. The heat in this process is dissipated to the inside of the heat exchange plates 131 and transferred to the side of the cold fluid. When the cold fluid flows through the inside of the heat exchange plates 131, it absorbs the transferred heat, thereby cooling the hot fluid and heating the cold fluid to achieve heat exchange.

[0062] Furthermore, the cleaning part 133 includes a mounting groove 1331 opened between each two adjacent groups of diversion plates 132, a base 1332 nested inside the mounting groove 1331, a drainage port 1333 extending from top to bottom through the outside of the base 1332, a rotating shaft 1334 rotatably set inside the drainage port 1333, a turbine 1335 set outside the rotating shaft 1334, a connecting shaft 1336 rotatably set outside the base 1332, and a cleaning brush 1337 set outside the connecting shaft 1336; the right end of the connecting shaft 1336 is fixedly connected to the left end of the rotating shaft 1334.

[0063] It should be noted that the cleaning piece 133 is nested and installed inside the mounting groove 1331 through the base 1332, and is a detachable installation method. When the heat exchanger is inspected and cleaned in the later stage, the base 1332 can be pulled out from the inside of the mounting groove 1331 to clean the cleaning piece 133 separately, so as to facilitate the cleaning of impurities inside the drainage port 1333 and scale attached to the surface of the turbine 1335, and at the same time facilitate the cleaning or replacement of the cleaning brush 1337 and the auxiliary brush 13371.

[0064] It should be noted that when the hot and cold fluids flow into the heat exchange plate 131, the hot and cold fluids further contact several groups of diverter plates 132. Several groups of diverter plates 132 will disperse the hot and cold fluids to increase the heat exchange contact area. At the same time, this process will slow down the fluid flow rate, and impurities mixed in the fluid will easily deposit on the surface of the diverter plate 132. Long-term accumulation of impurities will reduce the fluid circulation space, thereby affecting the heat exchange efficiency; therefore, through the cleaning part 133, when the fluid enters the heat exchange plate 131 and is diverted by the diverter plate 132, part of the fluid will pass through the drainage port 1333. Since the fluid has kinetic potential energy, when passing through the drainage port 1333, it will push the turbine 1335 set in the drainage port 1333 to rotate, and then drive the cleaning brush 1337 to clean the surface of the adjacent diverter plate 132, and the cleaned impurities will be carried out together with the fluid when it is discharged.

[0065] Specifically, the heat exchange plate 131 of the heat exchange assembly 13 is slidably installed on the guide rail 121 of the mounting assembly 12 and fixed by the clamping part 123; the heat exchange plate 131 is provided with a diverter plate 132 and a cleaning part 133, and the heat exchange fluid is diverted and guided through the diverter plate 132 in the heat exchange plate 131 to improve the heat exchange efficiency; the fluid flow drives the turbine 1335 in the cleaning part 133 to rotate, driving the cleaning brush 1337 and the auxiliary brush 13371 to rotate, thereby performing real-time self-cleaning of the inner wall of the heat exchange plate 131 to prevent impurities from depositing.

[0066] Furthermore, auxiliary brushes 13371 are provided on both the front and rear sides of the cleaning brush 1337 , and the lengths of the two sets of auxiliary brushes 13371 are greater than the length of the cleaning brush 1337 .

[0067] It should be noted that the cleaning brush 1337 can clean the front of the heat exchange plate 131, including the mounting surface for connection of the heat exchange plate 131, and the auxiliary brush 13371 is arranged on the side of the cleaning brush 1337. The auxiliary brush 13371 can clean the surface of the diverter plate 132 on both adjacent sides when rotating.

[0068] Furthermore, several groups of manifolds 132 are arranged in a mirror-symmetrical manner inside the heat exchange plate 131; it should be noted that the mirror-symmetrical distribution of the manifolds 132 can make the fluid disperse more evenly, thereby making the heat distribution even and improving the heat exchange efficiency.

[0069] Furthermore, a sealing groove 1311 is formed on the left side of the heat exchange plate 131 , and a sealing gasket 1312 is embedded in the sealing groove 1311 .

[0070] Specifically, the sealing gasket 1312 includes a main sealing ring embedded in the sealing groove 1311, and auxiliary annular sealing rings arranged around the heat exchange holes 1314 at the four corners of the heat exchange plate 131. The auxiliary annular sealing rings are connected to the main sealing rings to form a continuous closed loop. The main sealing ring and the auxiliary annular sealing rings cover the gap between the heat exchange hole 1314 and the adjacent heat exchange plate 131 to prevent the fluid from directly penetrating into the other side channel through the heat exchange hole 1314. Specifically, all fluid inlets and outlets are located on the same side of the heat exchange plate 131. The auxiliary annular sealing rings inside the adjacent heat exchange plates 131 alternately close the heat exchange holes 1314 on the left and right sides to form separate flow paths on the left and right sides, so that the cold and hot fluids can only enter the corresponding heat exchange plates 131 for heat exchange. This is a common technology in existing heat exchangers, and the specific principles will not be repeated here.

[0071] Furthermore, guide slots 1313 are provided on both upper and lower sides of the heat exchange plate 131 . The upper and lower ends of the heat exchange plate 131 are slidably disposed on the outer sides of the two sets of guide rails 121 through the two sets of guide slots 1313 .

[0072] Furthermore, the fixed plate 11 includes two groups of heat exchange tubes 111 and two groups of cold exchange tubes 112 ; the right ends of the two groups of heat exchange tubes 111 and the two groups of cold exchange tubes 112 are connected to the left side of the fixed plate 11 .

[0073] Furthermore, flanges 113 are provided at the left ends of the two groups of heat exchange tubes 111 and the two groups of cold exchange tubes 112 .

[0074] Furthermore, four groups of heat exchange holes 1314 are opened on the outer side of the heat exchange plate 131 , and the four groups of heat exchange holes 1314 correspond to the positions of the two groups of heat exchange tubes 111 and the two groups of cold exchange tubes 112 , respectively.

[0075] Furthermore, the clamping member 123 includes a clamping stud 1231 arranged on the right side of the fixing plate 11 , a movable clamping plate 1232 slidably arranged outside the clamping stud 1231 , and a clamping bolt 1233 threadably arranged outside the clamping stud 1231 .

[0076] Specifically, a sliding hole 12321 is opened on the outer side of the movable clamping plate 1232, and the sliding hole 12321 corresponds to the position of the clamping stud 1231. The movable clamping plate 1232 is slidably set on the outer side of the clamping stud 1231 through the sliding hole 12321; the shape and size of the clamping stud 1231 are adapted to the sliding hole 12321.

[0077] Furthermore, positioning holes 12322 are formed at both upper and lower ends of the movable clamping plate 1232 . The upper and lower ends of the movable clamping plate 1232 are slidably disposed on the outer sides of the two sets of guide rails 121 through the two sets of positioning holes 12322 .

[0078] When in use, the heat exchange plate 131 is slidably installed on the outside of the two sets of guide rails 121 of the installation assembly 12 through the guide slots 1313 at the upper and lower ends, and the heat exchange plate 131 is fixed with the clamping piece 123; by adjusting the clamping bolts 1233, the movable clamping plate 1232 is tightly fitted to the heat exchange plate 131 to ensure the stability and sealing of the installation; the hot fluid and the cold fluid are respectively connected to the heat exchanger through the heat exchange tube 111 and the cold exchange tube 112 on the fixed plate 11. The specific process is as follows: the hot fluid flows into the heat exchange tube 111, and the cold fluid flows into the heat exchange tube 112. The fluid flows into the cold exchange tube 112, and the two enter the corresponding heat exchange plate 131 respectively. Four groups of heat exchange holes 1314 are opened on the outside of the heat exchange plate 131, which correspond to the positions of the two groups of heat exchange tubes 111 and the two groups of cold exchange tubes 112 respectively, ensuring that the fluid can accurately flow into the heat exchange plate 131; the hot fluid and cold fluid entering the heat exchange plate 131 are evenly diverted by a number of diverter plates 132. The diverter plates 132 are distributed in a mirror-symmetrical manner inside the heat exchange plate 131, so that the fluid can be evenly dispersed, the turbulence degree is increased, and the heat exchange efficiency is improved.

[0079] Furthermore, the arrangement of the diverter plate 132 not only increases the contact area between the fluid and the heat exchange plate 131, but also forms an orderly flow path for the fluid in the heat exchange plate 131 through a guiding effect, thereby further improving the heat exchange effect. The diverted fluid will flow through the cleaning part 133 during its flow, and use the kinetic potential energy of the fluid as a drive to drive the cleaning brush 1337 and the auxiliary brush 13371 to rotate, thereby cleaning the surface of the adjacent diverter plate 132; when the fluid flows through the inlet 1333, the kinetic potential energy drives the turbine 1335 to rotate, and the turbine 1335 drives the rotating shaft 1334 to rotate, thereby rotating the connecting shaft 1336 and the cleaning brush 1337. Auxiliary brushes 13371 are provided on both sides of the front and rear of the cleaning brush 1337, and the length of the auxiliary brush 13371 is greater than the length of the cleaning brush 1337, which can comprehensively clean the surfaces of the diverter plates 132 on both sides, effectively prevent impurities from depositing, and keep the inside of the heat exchange plate 131 clean.

[0080] In summary, the heat exchange fluid is diverted and guided by the diverter plate 132, the turbulence is increased and the heat exchange efficiency is improved, and the fluid flow is used to drive the turbine 1335 in the cleaning part 133 to rotate, thereby driving the cleaning brush 1337 and the auxiliary brush 13371 to perform real-time self-cleaning on the inner wall of the heat exchange plate 131, effectively preventing impurity deposition and maintaining high-efficiency operation of the heat exchanger. Compared with the existing technology, the self-cleaning function of the heat exchanger does not require shutdown for complex manual disassembly and cleaning operations, reducing maintenance workload and downtime, and reducing maintenance costs. At the same time, the self-cleaning inside the heat exchange plate 131 avoids the long-term accumulation and corrosion of impurities on the surface of the heat exchange plate 131, reduces the damage to the sealing gasket 1312 caused by frequent disassembly and assembly, and extends the service life of the heat exchange plate 131 and the sealing gasket 1312.

[0081] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. 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 boiler heat exchanger, characterized in that: include, A connecting unit (1) comprising a fixing plate (11), a mounting assembly (12) arranged on the right side of the fixing plate (11), and a heat exchange assembly (13) arranged on the left side of the mounting assembly (12); The mounting assembly (12) is used to mount the heat exchange assembly (13) and the fixing plate (11); the heat exchange assembly (13) is used to achieve heat exchange and perform internal self-cleaning of the heat exchange assembly (13); The mounting assembly (12) comprises two sets of guide rails (121) arranged on the right side of the fixing plate (11), a bracket (122) arranged at the right ends of the two sets of guide rails (121), and a clamping member (123) arranged on the right side of the fixing plate (11); The heat exchange assembly (13) comprises a heat exchange plate (131) slidably arranged outside the two groups of guide rails (121), a plurality of groups of diverter plates (132) arranged inside the heat exchange plate (131), and a cleaning member (133) arranged between each two adjacent groups of diverter plates (132); The cleaning member (133) includes a mounting groove (1331) provided between each two adjacent groups of the diverter plates (132), a base (1332) nested inside the mounting groove (1331), a drainage port (1333) extending from top to bottom and extending outside the base (1332), a rotating shaft (1334) rotatably provided inside the drainage port (1333), a turbine (1335) provided outside the rotating shaft (1334), a connecting shaft (1336) rotatably provided outside the base (1332), and a cleaning brush (1337) provided outside the connecting shaft (1336); the right end of the connecting shaft (1336) is fixedly connected to the left end of the rotating shaft (1334); Auxiliary brushes (13371) are provided on both the front and rear sides of the cleaning brush (1337), and the lengths of the two sets of auxiliary brushes (13371) are greater than the length of the cleaning brush (1337); A plurality of groups of the diverter plates (132) are arranged inside the heat exchange plate (131) in a mirror-symmetrical manner; A sealing groove (1311) is provided on the left side of the heat exchange plate (131), and a sealing gasket (1312) is embedded in the sealing groove (1311); Guide slots (1313) are provided on both upper and lower sides of the heat exchange plate (131), and the upper and lower ends of the heat exchange plate (131) are slidably arranged on the outer sides of the two groups of guide rails (121) through the two groups of guide slots (1313); The fixed plate (11) comprises two groups of heat exchange tubes (111) and two groups of cold exchange tubes (112); the right ends of the two groups of heat exchange tubes (111) and the two groups of cold exchange tubes (112) are both connected to the left side of the fixed plate (11); The left ends of the two groups of heat exchange tubes (111) and the two groups of cold exchange tubes (112) are both provided with flanges (113); Four groups of heat exchange holes (1314) are provided on the outer side of the heat exchange plate (131), and the four groups of heat exchange holes (1314) correspond one-to-one to the positions of the two groups of heat exchange tubes (111) and the two groups of cold exchange tubes (112); The clamping member (123) comprises a clamping stud (1231) arranged on the right side of the fixing plate (11), a movable clamping plate (1232) slidably arranged on the outside of the clamping stud (1231), and a clamping bolt (1233) threadably arranged on the outside of the clamping stud (1231).

2. The boiler heat exchanger according to claim 1, characterized in that: A sliding hole (12321) is provided on the outer side of the movable clamping plate (1232), the sliding hole (12321) corresponds to the position of the clamping stud (1231), and the movable clamping plate (1232) is slidably arranged on the outer side of the clamping stud (1231) through the sliding hole (12321); The clamping stud (1231) is adapted to the shape and size of the sliding hole (12321).

3. The boiler heat exchanger according to claim 2, characterized in that: Positioning openings (12322) are provided at both upper and lower ends of the movable clamping plate (1232), and the upper and lower ends of the movable clamping plate (1232) are respectively slidably arranged on the outsides of the two groups of guide rails (121) through the two groups of positioning openings (12322).

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