Boiler heat exchanger

Abstract

The invention relates to the technical field of boiler heat exchangers, in particular to a boiler heat exchanger which comprises a connecting unit, a fixing plate, a mounting assembly arranged on the right side of the fixing plate and a heat exchange assembly arranged on the outer side of the mounting assembly. The mounting assembly is used for mounting the heat exchange assembly and the fixing plate; the heat exchange assembly is used for achieving heat exchange and conducting internal self-cleaning. The heat exchanger has the beneficial effects that heat exchange fluid is shunted and guided through the shunting plate, the turbulence degree is increased, the heat exchange efficiency is improved, meanwhile, a turbine in the cleaning part is driven to rotate through fluid flowing, then the cleaning brush and the auxiliary brush are driven to conduct real-time self-cleaning on the inner wall of the heat exchange plate, impurity deposition is effectively prevented, and the heat exchange efficiency is improved. Compared with the prior art, the self-cleaning function of the heat exchanger does not need to be shut down for complex manual disassembly and cleaning operation, the maintenance workload is reduced, the shutdown time is shortened, and the maintenance cost is reduced.

Description

Technical Field

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

[0002] In the boiler system of a power plant, as a key device for realizing efficient heat transfer, the performance of the heat exchanger 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, heating process fluids, etc., 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, which mainly come from suspended solids, dissolved salts, and other fine particles in the heat exchange fluid; when the fluid flows between the heat exchange plates, due to temperature changes, reduced flow velocity, 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 not only reduces the heat exchange efficiency of the heat exchanger, resulting in energy waste and increased production costs, but also has many adverse effects on the normal operation of the heat exchanger.

[0004] To address the fouling problem inside the heat exchanger, the currently common cleaning methods mainly include the following: one is chemical cleaning, which dissolves dirt by using chemical agents such as acids and alkalis, but this method will corrode the heat exchange plates, affecting the service life, and at the same time, it will generate a large amount of chemical waste liquid, and improper treatment will cause environmental pollution; the other is mechanical cleaning, such as manually disassembling the heat exchanger and then using tools such as brushes and scrapers for cleaning, or using high-pressure water jet cleaning, but these methods all require regular disassembly and assembly of the heat exchanger, which not only increases the maintenance workload and downtime, but also causes the sealing gaskets 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 problems existing in the above or the prior art, the present invention is proposed.

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

[0007] To solve the above technical problems, the present invention provides the following technical solution: A boiler heat exchanger, which includes a connection unit, including a fixing plate, an installation component arranged on the right side of the fixing plate, and a heat exchange component arranged on the left side of the installation component; The installation component is used to install the heat exchange component on the fixing plate; the heat exchange component is used to achieve heat exchange and perform internal self-cleaning of the heat exchange component; The installation component includes two sets of guide rails arranged on the right side of the fixed plate, a bracket arranged at the right ends of the two sets of guide rails, and a clamping member arranged on the right side of the fixed plate; The heat exchange component includes a heat exchange plate slidably arranged outside the two sets of guide rails, several flow dividing plates arranged inside the heat exchange plate, and a cleaning member arranged between every two adjacent flow dividing plates; The cleaning member includes an installation groove opened between every two adjacent flow dividing plates, a base nested inside the installation groove, a drainage port vertically penetrating and opened on the outer side of the base, a rotating shaft rotatably arranged inside the drainage port, a turbine arranged on the outer side of the rotating shaft, a connecting shaft rotatably arranged on the outer side of the base, and a cleaning brush arranged on the outer side of the connecting shaft; the right end of the connecting shaft is fixedly connected to the left end of the rotating shaft.

[0008] As a preferred solution of the boiler heat exchanger of the present invention, wherein: auxiliary brushes are arranged on both the front and rear sides of the cleaning brush, and the lengths of the two auxiliary brushes are both greater than the length of the cleaning brush.

[0009] As a preferred solution of the boiler heat exchanger of the present invention, wherein: several groups of the flow dividing plates are arranged in mirror symmetry inside the heat exchange plate; A sealing groove is opened on the left side of the heat exchange plate, and a sealing gasket is embedded inside the sealing groove.

[0010] As a preferred solution of the boiler heat exchanger of the present invention, wherein: guiding notch openings are opened on both the upper and lower sides of the heat exchange plate, and the upper and lower ends of the heat exchange plate are respectively slidably arranged outside the two sets of guide rails through the two guiding notch openings.

[0011] As a preferred solution of the boiler heat exchanger of the present invention, wherein: the fixed plate includes two sets of heat exchange tubes and two sets of cold exchange tubes; the right ends of the two sets of heat exchange tubes and the two sets of cold exchange tubes are both communicated with the left side of the fixed plate; Flanges are arranged at the left ends of the two sets of heat exchange tubes and the two sets of cold exchange tubes.

[0012] As a preferred solution of the boiler heat exchanger of the present invention, wherein: four heat exchange holes are opened on the outer side of the heat exchange plate, and the four heat exchange holes respectively correspond to the positions of the two sets of heat exchange tubes and the two sets of cold exchange tubes one by one.

[0013] As a preferred solution of the boiler heat exchanger of the present invention, wherein: the clamping member includes a clamping stud arranged on the right side of the fixed plate, a movable clamping plate slidably arranged outside the clamping stud, and a clamping bolt threadedly and movably arranged outside the clamping stud.

[0014] As a preferred embodiment of the boiler heat exchanger of the present invention, the following is provided: a sliding hole is formed on the outer side of the movable clamping plate, the position of the sliding hole corresponds to that of the clamping stud, and the movable clamping plate is slidably arranged on the outer side of the clamping stud through the sliding hole; The shape and size of the clamping stud are adapted to those of the sliding hole.

[0015] As a preferred embodiment of the boiler heat exchanger of the present invention, the following is provided: positioning ports are formed at both the upper and lower ends of the movable clamping plate, and the upper and lower ends of the movable clamping plate are respectively slidably arranged on the outer sides of two groups of guide rails through the two groups of positioning ports.

[0016] Advantages of the present invention: The present invention shunts and guides the heat exchange fluid through the shunt plate, increases the degree of turbulence to improve the heat exchange efficiency. At the same time, the rotation of the turbine in the cleaning member is driven by the fluid flow, and then the cleaning brush and the auxiliary brush are driven to clean the inner wall of the heat exchange plate in real time, effectively preventing impurity deposition and maintaining the high-efficiency operation of the heat exchanger. Compared with the prior art, the self-cleaning function of the heat exchanger does not require shutdown for complex manual disassembly and cleaning operations, reduces the maintenance workload and shutdown time, lowers the maintenance cost. 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 the damage to the sealing gasket caused by frequent disassembly and installation, extends the service life of the heat exchange plate and the sealing gasket. Using the power during fluid heat exchange as the cleaning driving source reduces energy waste, improves the overall energy utilization efficiency of the power plant boiler system, and has significant energy-saving and environmental protection effects. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is the overall structure diagram of the boiler heat exchanger.

[0019] Figure 2 It is the structure diagram of the heat exchange component of the boiler heat exchanger.

[0020] Figure 3 It is the front view of the heat exchange component of the boiler heat exchanger.

[0021] Figure 4 It is the overall structure diagram of the cleaning member of the boiler heat exchanger.

[0022] Figure 5 It is the front-to-back cross-sectional schematic diagram of the cleaning member (excluding the turbine) of the boiler heat exchanger.

[0023] Figure 6 Schematic left - right sectional view of the cleaning part (excluding the turbine) of the boiler heat exchanger.

[0024] Figure 7 Front - rear sectional view of the cleaning part of the boiler heat exchanger.

[0025] Figure 8 Schematic enlarged view of the structure at position A in Figure 7 of the boiler heat exchanger.

[0026] In the figure: 1. Connection unit; 11. Fixed plate; 111. Heat exchange tube; 112. Cold exchange tube; 113. Flange; 12. Installation component; 121. Guide rail; 122. Bracket; 123. Clamping part; 1231. Clamping stud; 1232. Movable clamping plate; 12321. Slide hole; 12322. Positioning port; 1233. Clamping bolt; 13. Heat exchange component; 131. Heat exchange plate; 1311. Sealing groove; 1312. Sealing gasket; 1313. Guide slot opening; 1314. Heat exchange hole; 132. Diverter plate; 133. Cleaning part; 1331. Installation groove; 1332. Base; 1333. Drainage port; 1334. Rotating shaft; 1335. Turbine; 1336. Connecting shaft; 1337. Cleaning brush; 13371. Sub - brush. Detailed implementation manners

[0027] To make the above - mentioned objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings of the specification.

[0028] In the following description, many specific details are set forth to facilitate a thorough understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0029] Secondly, the so - called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments.

[0030] Embodiment 1, referring to Figures 1 to 4 , which is the first embodiment of the present invention. This embodiment provides a boiler heat exchanger that can clean the inside of the heat exchanger using fluid power as the driving source while the boiler heat exchanger is performing heat exchange work; it includes a connection unit 1, which includes a fixed plate 11, an installation component 12 disposed on the right side of the fixed plate 11, and a heat exchange component 13 disposed on the left side of the installation component 12.

[0031] Further, an installation component 12 is used to install the heat exchange component 13 on the fixing plate 11; the heat exchange component 13 is used to achieve heat exchange and perform internal self-cleaning of the heat exchange component 13.

[0032] Further, the installation component 12 includes 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.

[0033] Further, the heat exchange component 13 includes a heat exchange plate 131 slidably arranged outside the two sets of guide rails 121, a plurality of flow dividing plates 132 arranged inside the heat exchange plate 131, and a cleaning member 133 arranged between every two adjacent flow dividing plates 132.

[0034] It should be noted that the number of the heat exchange plates 131 is set according to specific heat exchange requirements and is at least more than two, so that the hot and cold fluids flow into the adjacent heat exchange plates 131 respectively; specifically, when the hot fluid flows through, the hot fluid is divided by a plurality of flow dividing plates 132 to increase the heat exchange area between the hot fluid and the heat exchange plate 131. The heat in this process is dissipated into the heat exchange plate 131 and transferred to the cold fluid side. When the cold fluid flows through the inside of the heat exchange plate 131, it absorbs the transferred heat, so that the hot fluid is cooled and the cold fluid is heated to achieve heat exchange.

[0035] Further, the cleaning member 133 includes an installation groove 1331 opened between every two adjacent flow dividing plates 132, a base 1332 nested inside the installation groove 1331, a drainage port 1333 vertically penetrating and opened on the outer side of the base 1332, a rotating shaft 1334 rotatably arranged inside the drainage port 1333, a turbine 1335 arranged on the outer side of the rotating shaft 1334, a connecting shaft 1336 rotatably arranged on the outer side of the base 1332, and a cleaning brush 1337 arranged on the outside of the connecting shaft 1336; the right end of the connecting shaft 1336 is fixedly connected to the left end of the rotating shaft 1334.

[0036] It should be noted that the drainage port 1333 should refer to the Figure 2 orientation relationship shown in the attached drawings of the specification. The attached drawings of the specification Figures 4 - 7 relative to Figure 3 is an axonometric view after the cleaning member 133 is laid flat.

[0037] It should be noted that when the hot and cold fluids flow into the inside of the heat exchange plate 131, the hot and cold fluids further come into contact with a number of component flow plates 132. The number of component flow plates 132 will disperse the hot and cold fluids to increase the heat exchange contact area. At the same time, during this process, the fluid flow rate will be slowed down, and the impurities doped in the fluid are likely to deposit on the surface of the flow plate 132. The long-term accumulation of impurities will reduce the fluid flow space, thereby affecting the heat exchange efficiency. Therefore, through the cleaning member 133, when the fluid enters the inside of the heat exchange plate 131 and is branched by the flow plate 132, part of the fluid will pass through the drainage port 1333. Since the fluid has dynamic potential energy, when passing through the drainage port 1333, it will push the turbine 1335 arranged in the drainage port 1333 to rotate, thereby driving the cleaning brush 1337 to clean the surface of the adjacent flow plate 132, and the impurities cleaned out will be taken out together when the fluid is discharged.

[0038] During use, the heat exchange plate 131 of the heat exchange assembly 13 is slidably installed on the guide rail 121 of the installation assembly 12 and fixed by the clamping member 123. The heat exchange plate 131 is internally provided with a flow plate 132 and a cleaning member 133. The heat exchange fluid is branched and guided by the flow plate 132 inside the heat exchange plate 131 to improve the heat exchange efficiency. The fluid flow drives the turbine 1335 in the cleaning member 133 to rotate, driving the cleaning brush 1337 and the auxiliary brush 13371 to rotate, so as to perform real-time self-cleaning on the inner wall of the heat exchange plate 131, prevent impurity deposition, and keep the heat exchanger running efficiently.

[0039] In summary, the heat exchange fluid is branched and guided by the flow plate 132 to increase the degree of turbulence and improve the heat exchange efficiency. At the same time, the fluid flow drives the turbine 1335 in the cleaning member 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. There is no need to stop the machine for complex manual disassembly and cleaning operations, reducing the maintenance workload and downtime, and reducing the maintenance cost. 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. Using the power during fluid heat exchange as the cleaning drive source reduces energy waste and improves the overall energy utilization efficiency of the power plant boiler system.

[0040] Embodiment 2, referring to Figures 1 to 5 , which is the second embodiment of the present invention. The difference from the first embodiment is that it further includes the combined installation of the heat exchange assembly 13 and improving the cleaning efficiency inside the heat exchange assembly 13. In the previous embodiment, the boiler heat exchanger is provided with auxiliary brushes 13371 on both the front and rear sides of the cleaning brush 1337, and the lengths of the two groups of auxiliary brushes 13371 are both greater than the length of the cleaning brush 1337.

[0041] It should be noted that the cleaning brush 1337 can clean the front surface of the heat exchange plate 131, including the mounting surface for connecting the heat exchange plate 131, and the auxiliary brush 13371 is arranged on the side surface of the cleaning brush 1337. The auxiliary brush 13371 can clean the surfaces of the adjacent two flow distribution plates 132 when rotating.

[0042] Furthermore, several groups of flow distribution plates 132 are arranged in mirror symmetry inside the heat exchange plate 131.

[0043] It should be noted that distributing the flow distribution plates 132 in mirror symmetry can make the fluid dispersion more uniform, and then make the heat distribution uniform, improving the heat exchange efficiency.

[0044] Even further, a sealing groove 1311 is formed on the left side of the heat exchange plate 131, and a sealing gasket 1312 is embedded inside the sealing groove 1311.

[0045] Specifically, the sealing gasket 1312 includes a main sealing ring embedded inside 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 ring to form a continuous closed loop. The main sealing ring and the auxiliary annular sealing rings cover the gaps between the heat exchange holes 1314 and the adjacent heat exchange plates 131, preventing the fluid from directly penetrating into the other side channel through the heat exchange holes 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 seal the heat exchange holes 1314 on the left and right sides, forming separated 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 for existing heat exchangers, and the specific principle will not be elaborated here.

[0046] 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 threadedly and movably arranged outside the clamping stud 1231.

[0047] Specifically, a sliding hole 12321 is formed on the outside 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 arranged outside 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.

[0048] During use, by adding a set of auxiliary brushes 13371 on each of the front and rear sides of the cleaning brush 1337, and the length of each set of auxiliary brushes 13371 is greater than that of the cleaning brush 1337, the cleaning efficiency can be improved; the flow splitters 132 are symmetrically distributed in a mirror image inside the heat exchange plate 131, making the fluid dispersion more uniform and enhancing the heat exchange efficiency; the clamping member 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 outside the clamping stud 1231 through a sliding hole 12321, and the lateral position of the movable clamping plate 1232 outside the clamping stud 1231 can be adjusted slidably, and then fixed with the clamping bolt 1233, which is convenient for installing and disassembling the heat exchange plate 131, and at the same time provides a stable clamping force to ensure the tight connection between the heat exchange plate 131 and the fixing plate 11.

[0049] In summary, by respectively arranging a set of auxiliary brushes 13371 on the front and rear sides of the cleaning brush 1337, and the length of each set of auxiliary brushes 13371 is greater than that of the cleaning brush 1337, the surfaces of the flow splitters 132 on the adjacent two sides can be cleaned more comprehensively, improving the cleaning efficiency. The flow splitters 132 are symmetrically distributed in a mirror image on the inner wall of the heat exchange plate 131, making the fluid dispersion more uniform, and further making the heat distribution uniform, further improving the heat exchange efficiency. The heat exchange plate 131 is convenient for installing and disassembling through the clamping member 123, and at the same time provides a stable clamping force to ensure the tight connection between multiple groups of heat exchange plates 131 and the fixing plate 11, improving the overall stability and sealing performance of the heat exchanger.

[0050] Example 3, referring to Figures 1 to 6 , which is the third embodiment of the present invention. This embodiment provides a boiler heat exchanger, which can clean the inside of the heat exchanger by using fluid power as a driving source while the boiler heat exchanger is performing heat exchange work; it includes a connection 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.

[0051] Furthermore, the installation component 12 is used to install the heat exchange component 13 on the fixing plate 11; the heat exchange component 13 is used to achieve heat exchange and perform internal self-cleaning of the heat exchange component 13.

[0052] Furthermore, the installation component 12 includes 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.

[0053] Furthermore, the heat exchange component 13 includes a heat exchange plate 131 slidably arranged outside the two sets of guide rails 121, several sets of flow splitters 132 arranged inside the heat exchange plate 131, and a cleaning member 133 arranged between every two adjacent sets of flow splitters 132.

[0054] 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 hot and cold fluids flow into adjacent heat exchange plates 131 respectively; specifically, the hot fluid is shunted by a number of shunt plates 132 to increase the heat exchange area with the heat exchange plates 131. The heat generated in this process is dissipated into the interior of the heat exchange plates 131 and transferred to the cold fluid side. When the cold fluid flows through the interior 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.

[0055] Furthermore, the cleaning member 133 includes an installation groove 1331 opened in the middle of each adjacent two groups of shunt plates 132, a base 1332 nested inside the installation groove 1331, a drainage port 1333 vertically penetrating and opened on the outer side of the base 1332, a rotating shaft 1334 rotatably arranged inside the drainage port 1333, a turbine 1335 arranged on the outer side of the rotating shaft 1334, a connecting shaft 1336 rotatably arranged on the outer side of the base 1332, and a cleaning brush 1337 arranged on the outside of the connecting shaft 1336; the right end of the connecting shaft 1336 is fixedly connected to the left end of the rotating shaft 1334.

[0056] It should be noted that the cleaning member 133 is nested and installed inside the installation groove 1331 through the base 1332, which is a detachable installation method. During the later maintenance and cleaning of the heat exchanger, the base 1332 can be pulled out from the inside of the installation groove 1331 to clean the cleaning member 133 separately, which is convenient for cleaning the impurities inside the drainage port 1333 and the scale attached to the surface of the turbine 1335. At the same time, it is convenient to clean or replace the cleaning brush 1337 and the auxiliary brush 13371.

[0057] It should be noted that when the hot and cold fluids flow into the heat exchange plates 131, the hot and cold fluids further contact a number of groups of shunt plates 132. The number of groups of shunt 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 the impurities doped in the fluid are easily deposited on the surface of the shunt plates 132. The long-term accumulation of impurities will reduce the fluid flow space, thereby affecting the heat exchange efficiency; therefore, through the cleaning member 133, when the fluid enters the heat exchange plates 131 and is shunted by the shunt plates 132, part of the fluid will pass through the drainage port 1333. Due to the dynamic potential energy of the fluid, when passing through the drainage port 1333, it will push the turbine 1335 arranged in the drainage port 1333 to rotate, and then drive the cleaning brush 1337 to clean the surface of the adjacent shunt plates 132. The cleaned impurities will be taken out together when the fluid is discharged.

[0058] Specifically, the heat exchange plate 131 of the heat exchange component 13 is slidably installed on the guide rail 121 of the installation component 12 and fixed by the clamping member 123. There is a flow dividing plate 132 and a cleaning member 133 inside the heat exchange plate 131. The heat exchange fluid is divided and guided by the flow dividing plate 132 inside the heat exchange plate 131, improving the heat exchange efficiency. The fluid flow drives the turbine 1335 in the cleaning member 133 to rotate, driving the cleaning brush 1337 and the auxiliary brush 13371 to rotate, thereby performing real-time self-cleaning on the inner wall of the heat exchange plate 131 to prevent impurity deposition.

[0059] Further, auxiliary brushes 13371 are arranged on both the front and rear sides of the cleaning brush 1337, and the lengths of the two groups of auxiliary brushes 13371 are both greater than the length of the cleaning brush 1337.

[0060] It should be noted that the cleaning brush 1337 can clean the front surface of the heat exchange plate 131, including the installation surface for connecting the heat exchange plate 131, while the auxiliary brush 13371 is arranged on the side of the cleaning brush 1337, and the auxiliary brush 13371 can clean the surfaces of the adjacent flow dividing plates 132 on both sides during rotation.

[0061] Further, several groups of flow dividing plates 132 are arranged in mirror symmetry inside the heat exchange plate 131. It should be noted that distributing the flow dividing plates 132 in mirror symmetry can make the fluid dispersion more uniform, and further make the heat distribution uniform, improving the heat exchange efficiency.

[0062] Furthermore, a sealing groove 1311 is opened on the left side of the heat exchange plate 131, and a sealing gasket 1312 is embedded inside the sealing groove 1311.

[0063] Specifically, the sealing gasket 1312 includes a main sealing ring embedded inside 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 ring to form a continuous closed loop. The main sealing ring and the auxiliary annular sealing rings cover the gaps between the heat exchange holes 1314 and the adjacent heat exchange plates 131, preventing the fluid from directly penetrating into the other side channel through the heat exchange holes 1314. Specifically, all fluid inlets and outlets are located on the same side of the heat exchange plate 131. The heat exchange holes 1314 on the left and right sides are alternately sealed by the auxiliary annular sealing rings inside the adjacent heat exchange plates 131, forming separated 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 for existing heat exchangers, and the specific principle will not be elaborated here.

[0064] Further, guiding slots 1313 are opened on both the 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 guiding slots 1313 respectively.

[0065] Further, the fixing 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 communicate with the left side of the fixing plate 11.

[0066] Further, 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.

[0067] Further, four heat exchange holes 1314 are formed on the outer side of the heat exchange plate 131, and the four 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 one by one.

[0068] Further, the clamping member 123 includes a clamping stud 1231 provided on the right side of the fixing plate 11, a movable clamping plate 1232 slidably arranged on the outer side of the clamping stud 1231, and a clamping bolt 1233 threadedly and movably arranged on the outer side of the clamping stud 1231.

[0069] Specifically, a sliding hole 12321 is formed 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.

[0070] Further, positioning ports 12322 are formed at both the upper and lower ends of the movable clamping plate 1232, and the upper and lower ends of the movable clamping plate 1232 are slidably arranged on the outer sides of the two groups of guide rails 121 through the two groups of positioning ports 12322 respectively.

[0071] During use, the heat exchange plate 131 is slidably installed on the outer sides of the two groups of guide rails 121 of the installation assembly 12 through the guide groove openings 1313 at the upper and lower ends, and the clamping member 123 is used to fix the heat exchange plate 131; by adjusting the clamping bolt 1233, the movable clamping plate 1232 is closely attached to the heat exchange plate 131 to ensure the stability and sealing performance of the installation; the hot fluid and the cold fluid are respectively connected to the heat exchanger through the heat exchange tubes 111 and the cold exchange tubes 112 on the fixing plate 11, and the specific process is as follows: the hot fluid flows in from the heat exchange tube 111, the cold fluid flows in from the cold exchange tube 112, and the two respectively enter the corresponding heat exchange plate 131. Four heat exchange holes 1314 are formed on the outer side 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 one by one, ensuring that the fluid can accurately flow into the heat exchange plate 131; the hot fluid and the cold fluid entering the heat exchange plate 131 are evenly divided by a plurality of flow dividing plates 132. The flow dividing plates 132 are symmetrically distributed in the heat exchange plate 131 in a mirror image, enabling the fluid to be evenly dispersed, increasing the degree of turbulence, and improving the heat exchange efficiency.

[0072] Furthermore, the setting of the flow splitter plate 132 not only increases the contact area between the fluid and the heat exchange plate 131, but also forms an orderly flow path of the fluid within the heat exchange plate 131 through the guiding effect, further enhancing the heat exchange effect. The split fluid will flow through the cleaning member 133 during its flow, and using the dynamic potential energy of the fluid as the driving force, it drives the cleaning brush 1337 and the auxiliary brush 13371 to rotate, thereby cleaning the surface of the adjacent flow splitter plate 132; when the fluid flows through the drainage port 1333, it pushes the turbine 1335 to rotate through the dynamic potential energy, the turbine 1335 drives the rotating shaft 1334 to rotate, and further makes the connecting shaft 1336 and the cleaning brush 1337 rotate. Auxiliary brushes 13371 are arranged on both the front and rear sides of the cleaning brush 1337, and the length of the auxiliary brush 13371 is greater than that of the cleaning brush 1337, which can comprehensively clean the surfaces of the adjacent flow splitter plates 132 on both sides, effectively preventing impurity deposition and keeping the interior of the heat exchange plate 131 clean.

[0073] In summary, the flow splitter plate 132 is used to split and guide the heat exchange fluid, increasing the degree of turbulence to improve the heat exchange efficiency. At the same time, the rotation of the turbine 1335 in the cleaning member 133 is driven by the fluid flow, and then the cleaning brush 1337 and the auxiliary brush 13371 are driven to clean the inner wall of the heat exchange plate 131 in real time, effectively preventing impurity deposition and keeping the heat exchanger running efficiently. Compared with the prior art, the self-cleaning function of the heat exchanger does not require shutdown for complex manual disassembly and cleaning operations, reducing the maintenance workload and shutdown time, and lowering the maintenance cost. 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.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A boiler heat exchanger, characterized in that: including, a connection unit (1), including a fixing plate (11), a mounting 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 mounting component (12); the mounting component (12) is used to mount the heat exchange component (13) to the fixing plate (11); the heat exchange component (13) is used to achieve heat exchange and perform internal self-cleaning of the heat exchange component (13); the mounting component (12) includes two groups 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 groups of guide rails (121), and a clamping member (123) arranged on the right side of the fixing plate (11); the heat exchange component (13) includes a heat exchange plate (131) slidably arranged outside the two groups of guide rails (121), several flow dividing plates (132) arranged inside the heat exchange plate (131), and a cleaning member (133) arranged between every two adjacent groups of flow dividing plates (132); the cleaning member (133) includes a mounting groove (1331) opened between every two adjacent groups of flow dividing plates (132), a base (1332) nested inside the mounting groove (1331), a drainage port (1333) vertically penetrating and opened on the outer side of the base (1332), a rotating shaft (1334) rotatably arranged inside the drainage port (1333), a turbine (1335) arranged on the outer side of the rotating shaft (1334), a connecting shaft (1336) rotatably arranged on the outer side of the base (1332), and a cleaning brush (1337) arranged on the outer side of the connecting shaft (1336); the right end of the connecting shaft (1336) is fixedly connected to the left end of the rotating shaft (1334).

2. The boiler heat exchanger according to claim 1, characterized in that: Auxiliary brushes (13371) are arranged on both the front and rear sides of the cleaning brush (1337), and the lengths of the two groups of auxiliary brushes (13371) are both greater than the length of the cleaning brush (1337).

3. A boiler heat exchanger according to claim 2, characterized in that: several groups of the flow dividing plates (132) are arranged in mirror symmetry inside the heat exchange plate (131); a sealing groove (1311) is opened on the left side of the heat exchange plate (131), and a sealing gasket (1312) is embedded inside the sealing groove (1311).

4. The boiler heat exchanger according to claim 3, wherein: Guide groove openings (1313) are opened on both the upper and lower sides of the heat exchange plate (131), and the upper and lower ends of the heat exchange plate (131) are respectively slidably arranged outside the two groups of guide rails (121) through the two groups of guide groove openings (1313).

5. A boiler heat exchanger according to claim 4, characterized in that: the fixing 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 both communicated with the left side of the fixing plate (11); flanges (113) are arranged at the left ends of the two groups of heat exchange tubes (111) and the two groups of cold exchange tubes (112).

6. The boiler heat exchanger according to claim 5, characterized in that: Four groups of heat exchange holes (1314) are formed on the outer side of the heat exchange plate (131), and the positions of the four groups of heat exchange holes (1314) correspond to those of two groups of the heat exchange tubes (111) and two groups of the cold exchange tubes (112) respectively.

7. A boiler heat exchanger according to claim 6, characterized in that: 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 on the outer side of the clamping stud (1231), and a clamping bolt (1233) threadedly and movably arranged on the outer side of the clamping stud (1231).

8. A boiler heat exchanger according to claim 7, characterized in that: A sliding hole (12321) is formed 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).

9. A boiler heat exchanger according to claim 8, characterized in that: Positioning ports (12322) are formed at both the 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 outer sides of two groups of the guide rails (121) through the two groups of positioning ports (12322).

Images