A nickel-steel composite heat exchanger equipment

Abstract

The present invention discloses a nickel-steel composite heat exchanger device, which relates to a heat exchange recovery technology, comprising an outer shell and a heat exchange cavity opened inside the outer shell, wherein a heat exchange mechanism is installed in the heat exchange cavity, and the heat exchange mechanism comprises a plurality of heat exchange plates rotatably installed in the heat exchange cavity by a torsion spring; the torsion spring enables the heat exchange plate to have a self-cleaning position, in which the fluctuation of the airflow in the heat exchange cavity can drive the heat exchange plate to swing back and forth; the present invention provides a nickel-steel composite heat exchanger device, wherein when the gas flow in the heat exchange cavity is stable, the heat exchange plate is in a horizontal state, and heat is exchanged with the gas flowing through at this time; when the gas flow in the heat exchange cavity fluctuates, the heat exchange plate tilts and swings accordingly to shake off the dust accumulated on the heat exchange plate, and at this time the heat exchange plate not only exchanges heat with the gas, but also can use the fluctuation of the gas flow to perform self-cleaning, thus avoiding damage to the surface of the heat exchange plate.

Description

Technical Field

[0001] The invention relates to heat exchange recovery technology, and in particular to a nickel-steel composite heat exchanger device. Background Art

[0002] A heat exchanger is a device used for heat transfer that can exchange heat between fluids. It is widely used in industrial production, energy systems, HVAC, and electronic equipment heat dissipation. Nickel-steel composite products, as a new type of heat dissipation material, have excellent thermal conductivity and excellent mechanical strength. They can be used as the material composition of heat exchangers. Heat exchangers made of nickel-steel composite materials can conduct heat more efficiently and improve heat dissipation effects. In industrial production, composite heat exchangers are often used for heat exchange treatment of flue gas.

[0003] For example, the patent with the authorization announcement number CN118009760B and the authorization announcement date October 1, 2024, and the name of the patent is the method for cleaning the scale of the flue gas heat exchanger of the printing and dyeing setting machine and the heat exchanger structure, which solves the problems of efficient recovery of heat energy and removal of solidified high-melting-point organic matter. The processing steps are: the flue gas is passed into the flue gas treatment chamber, the flue gas solidifies and accumulates on the collection plate, the collection plate is cleaned, and the pollutants are collected. The structure of the heat exchanger is that the scraper of the high-melting-point pollutant is in contact with the rectangular heat exchange cavity wall panel, and the piston of the control plate moving cylinder is connected to the scraper of the high-melting-point pollutant through the scraper moving control plate. The beneficial effect is: efficient collection of high-melting-point organic pollutants and heat in the flue gas. The recovered heat is circulated for use by the textile printing and dyeing setting machine. It has a simple structure and is easy to clean, and solves the fire risk caused by solidified organic pollutants in the flue of the textile printing and dyeing setting machine.

[0004] Another example is the patent with the authorization announcement number CN117628619B and the authorization announcement date May 14, 2024, named fresh air heat exchanger and fresh air system, which includes a bottom plate; a plurality of positioning rods, which are fixed to the bottom plate and distributed along the edge of the bottom plate; a plurality of film plates, which are stacked on the bottom plate and have a first positioning hole adapted to the positioning rod on the edge; a top plate, which is located on the side of the stacked film plates away from the bottom plate and has a second positioning hole adapted to the positioning rod on the edge; an overhead plate, which is located on the side of the top plate away from the film plate and is fixed to the end of the positioning rod; a sequential plate separation device, which is installed on the overhead plate and is used to automatically separate a certain film plate from other film plates in sequence according to user instructions; a locking mechanism, which is used to determine whether to lock the top plate and the positioning rod according to the user's control behavior. This patent has the effect of reducing the difficulty of cleaning the fresh air system heat exchanger.

[0005] In order to ensure the heat exchange efficiency of the heat exchanger and prevent dust accumulation, the specific heat exchange structure needs to be cleaned. The shortcoming of the existing technology is that the cleaning method is often to scrape or disassemble and clean after shutdown, which is not only inefficient but also easy to damage the surface of the specific heat exchange structure. Summary of the invention

[0006] The object of the present invention is to provide a nickel-steel composite heat exchanger device to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A nickel-steel composite heat exchanger device comprises an outer shell and a heat exchange cavity opened inside the outer shell, a heat exchange mechanism is installed in the heat exchange cavity, and the heat exchange mechanism comprises a plurality of heat exchange plates rotatably installed in the heat exchange cavity through a torsion spring;

[0009] The torsion spring enables the heat exchange plate to have a self-cleaning position, in which the fluctuation of the airflow in the heat exchange cavity can drive the heat exchange plate to swing back and forth.

[0010] In the above-mentioned nickel-steel composite heat exchanger equipment, two liquid separation boxes are installed in the heat exchange chamber, one of the liquid separation boxes is connected to a liquid inlet pipe, the liquid inlet pipe passes through the outer shell and extends to the outside of the heat exchange chamber, and the other liquid separation box is connected to a liquid outlet pipe, the liquid outlet pipe passes through the outer shell and extends to the outside of the heat exchange chamber.

[0011] In the above-mentioned nickel-steel composite heat exchanger equipment, the heat exchange plate is rotatably installed between the two liquid separation boxes through a connecting tube, the connecting tube extends into the liquid separation box, a mounting tube is fixed on the inner wall of the liquid separation box, the mounting tube is sleeved on the outer side of the connecting tube, and the mounting tube and the connecting tube are connected by a torsion spring.

[0012] In the above-mentioned nickel-steel composite heat exchanger equipment, the outer shell is provided with an air inlet and an air outlet for gas circulation, and the air inlet and the air outlet are arranged correspondingly.

[0013] In the above-mentioned nickel-steel composite heat exchanger equipment, a heat exchange area is formed between the multiple heat exchange plates. In the initial state, the flue gas passes through the heat exchange area in a horizontal direction to perform heat exchange.

[0014] In the above-mentioned nickel-steel composite heat exchanger equipment, the plurality of heat exchange plates are arranged in sequence from top to bottom, and the distance between two adjacent heat exchange plates is the same.

[0015] The above-mentioned nickel-steel composite heat exchanger device, wherein the connecting tube has a rotatable state and a non-rotatable state, further comprises a driving unit, wherein the driving unit is used to drive the connecting tube to switch between the rotatable state and the non-rotatable state.

[0016] In the nickel-steel composite heat exchanger device described above, a sliding shaft is slidably installed in the liquid separation box, and a plurality of extrusion blocks corresponding to the connecting tubes are fixedly connected to the sliding shaft. An arc-shaped extrusion groove is provided at the end of the connecting tube, and the arc-shaped extrusion groove and the extrusion block are correspondingly arranged. When the extrusion block is completely inserted into the arc-shaped extrusion groove, the connecting tube is in a non-rotatable state.

[0017] In the above-mentioned nickel-steel composite heat exchanger equipment, the sliding shaft passes through the outer shell, a movable plate is connected between the two sliding shafts, a driving member is installed outside the top wall of the outer shell, a driving member is installed in the heat exchange cavity, and the movable end of the driving member is connected to the movable plate.

[0018] In the above-mentioned nickel-steel composite heat exchanger equipment, the extrusion block includes an arc-shaped portion and a triangular extrusion portion connected to the arc-shaped block.

[0019] In the above technical scheme, the present invention provides a nickel-steel composite heat exchanger device, including an outer shell and a heat exchange plate rotatably arranged in the outer shell. When the gas flow in the heat exchange chamber is stable, the heat exchange plate is in a horizontal state, and heat is exchanged with the gas flowing through it. When the gas flow in the heat exchange chamber fluctuates, the heat exchange plate tilts and swings accordingly to shake off the dust accumulated on the heat exchange plate. At this time, the heat exchange plate not only exchanges heat with the gas, but also can use the fluctuations in gas flow to perform self-cleaning. In this way, self-cleaning is performed while the heat exchange work is in progress, which ensures work efficiency while avoiding damage to the surface of the heat exchange plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a nickel-steel composite heat exchanger device provided in one embodiment of the present invention.

[0022] Figure 2 A schematic diagram of the internal structure of a nickel-steel composite heat exchanger device provided in one embodiment of the present invention.

[0023] Figure 3 An AA sectional view of a nickel-steel composite heat exchanger device provided in one embodiment of the present invention.

[0024] Figure 4 For the present invention Figure 3 A local enlarged view of point X.

[0025] Figure 5A partial three-dimensional structural schematic diagram of a nickel-steel composite heat exchanger device provided in yet another embodiment of the present invention.

[0026] Figure 6 For the present invention Figure 5 A partial enlarged view of point Y.

[0027] Figure 7 A partial three-dimensional structural schematic diagram of a nickel-steel composite heat exchanger device provided in another embodiment of the present invention.

[0028] Figure 8 For the present invention Figure 7 A partial enlarged view of point Z.

[0029] Fig. 9 A schematic structural diagram of an extrusion block with an upper support rod provided in another embodiment of the present invention.

[0030] Fig.10 A schematic diagram of the limit state of a heat exchange plate in an adjustable angle mode provided in another embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1. Outer shell; 11. Heat exchange cavity; 12. Heat exchange mechanism; 121. Torsion spring; 122. Heat exchange plate; 123. Connecting tube; 124. Mounting tube; 13. Air inlet; 14. Air outlet; 15. Liquid separation box; 16. Liquid inlet pipe; 17. Liquid outlet pipe; 18. Driving unit; 181. Sliding shaft; 182. Extrusion block; 183. Arc extrusion groove; 184. Moving plate; 185. Driving member; 186. Arc-shaped part; 187. Triangular extrusion part; 189. First driving block; 190. Second driving block; 191. Upper plate; 192. Lower plate; 193. Upper support rod; 194. Lower support rod. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] like Figure 1-10 As shown, a nickel-steel composite heat exchanger device provided by an embodiment of the present invention includes an outer shell 1 and a heat exchange chamber 11 opened inside the outer shell 1, a heat exchange mechanism 12 is installed in the heat exchange chamber 11, and the heat exchange mechanism 12 includes a plurality of heat exchange plates 122 rotatably installed in the heat exchange chamber 11 through a torsion spring 121; the torsion spring 121 enables the heat exchange plate 122 to have a self-cleaning position, in which the fluctuation of the airflow in the heat exchange chamber 11 can drive the heat exchange plate 122 to swing back and forth.

[0035] Specifically in this embodiment, the outer shell 1 is installed on the route of smoke circulation, and the two ends of the heat exchange chamber 11 are connected to the air inlet and outlet of the smoke circulation channel so that the smoke can enter from one end of the heat exchange chamber 11 and be output from the other end. During the circulation of the smoke in the heat exchange chamber 11, the smoke is cooled by the heat exchange mechanism 12; during normal installation and use, the plane where the heat exchange plate 122 is located in the initial state is the first plane, the smoke flow direction is defined as the horizontal direction, and the direction perpendicular to the smoke flow direction is defined as the vertical direction. The heat exchange plate 122 is a square hollow plate structure, and a heat exchange liquid flows through the heat exchange plate 122, and the heat is brought out of the heat exchange chamber 11 for utilization through the heat exchange liquid. The multiple heat exchange plates 122 are arranged in sequence from top to bottom, and the spacing between two adjacent heat exchange plates 122 is preferably the same. The smoke is cooled simultaneously by the multiple heat exchange plates 122, and the heat exchange plate 122 can rotate, and preferably, its rotation axis is located in the middle of the heat exchange plate 122. , and the rotation axis is parallel to the extension direction of the heat exchange plate 122; when the flue gas flows stably (that is, laminar flow, laminar flow is a flow state of fluid, and the characteristic of laminar flow is that the fluid particles move in an orderly manner and do not mix with each other), the heat exchange plate 122 maintains the self-cleaning position under the action of the torsion spring 121, that is, the initial state, and the self-cleaning position of the heat exchange plate 122 is preferably in a horizontal state; when the heat exchange plate 122 is in a horizontal state, it helps to stabilize the flow of flue gas and ensure the flow rate and heat exchange efficiency of the flue gas. Only when the flue gas is turbulent (turbulent flow is a flow state of fluid, and the fluid movement is disordered and random), the heat exchange plate 122 will swing accordingly, and the dust accumulated on the heat exchange plate 122 is shaken off and cleaned by the swing of the heat exchange plate 122. At this time, the heat exchange plate 122 can not only exchange heat for the gas, but also use the unstable state of gas flow for passive self-cleaning, so that the working efficiency is ensured and the damage to the surface of the heat exchange plate 122 is avoided.

[0036] In another embodiment provided by the present invention, two liquid separation boxes 15 are installed in the heat exchange chamber 11, one of the liquid separation boxes 15 is connected to a liquid inlet pipe 16, the liquid inlet pipe 16 passes through the outer shell 1 and extends to the outside of the heat exchange chamber 11, and the other liquid separation box 15 is connected to a liquid outlet pipe 17, the liquid outlet pipe 17 passes through the outer shell 1 and extends to the outside of the heat exchange chamber 11, the heat exchange liquid flows in from the liquid inlet pipe 16 and flows out from the liquid outlet pipe 17 after heat exchange, and the liquid separation box 15 is used to distribute the heat exchange liquid to different heat exchange plates 122.

[0037] In another embodiment provided by the present invention, the heat exchange plate 122 is installed between the two liquid separation boxes 15 through the rotation of the connecting tube 123 dynamic seal, and the two ends of the connecting tube 123 are connected. The main function of the connecting tube 123 is to provide a rotatable condition for the heat exchange plate 122. The connecting tube 123 extends into the liquid separation box 15 to facilitate liquid inlet and outlet. A mounting tube 124 is fixed on the inner wall of the liquid separation box 15, and the mounting tube 124 is sleeved on the outer side of the connecting tube 123. The mounting tube 124 and the connecting tube 123 are connected by a torsion spring 121. In the initial state, under the action of the torsion spring 121, the connecting tube 123 maintains a stable state and keeps the heat exchange plate 122 in a horizontal state.

[0038] In another embodiment provided by the present invention, an air inlet 13 and an air outlet 14 for gas circulation are provided on the outer shell 1, and the air inlet 13 and the air outlet 14 are correspondingly arranged so that the smoke can enter the air inlet 13 horizontally and stably and be output from the air outlet 14; a heat exchange area is formed between the plurality of heat exchange plates 122, and in an initial state, the smoke passes through the heat exchange area in a horizontal direction for heat exchange, thereby ensuring the stability of the smoke flow; the plurality of heat exchange plates 122 are arranged in sequence from top to bottom, and the number of the heat exchange plates 122 is preferably twelve, and the spacing between two adjacent heat exchange plates 122 is the same, which is helpful to stabilize the flow of the smoke, and the heat exchange efficiency can be adjusted by adjusting the number of the heat exchange plates 122 and the spacing between the heat exchange plates 122.

[0039] In another embodiment provided by the present invention, the connecting cylinder 123 has a rotatable state and a non-rotatable state, and also includes a driving unit 18, wherein the driving unit 18 is used to drive the connecting cylinder 123 to switch between the rotatable state and the non-rotatable state; when the connecting cylinder 123 is in the rotatable state, the flow of flue gas can drive the heat exchange plate 122 and the connecting cylinder 123 to swing, and self-cleaning is performed by utilizing the unstable state of gas flow; when the connecting cylinder 123 is in the non-rotatable state, the heat exchange plate 122 can be prevented from swinging for a long time, which will not only cause the connecting cylinder 123 to wear, but also reduce the heat exchange efficiency of the flue gas. The state of the heat exchange plate 122 can be controlled by controlling the state of the connecting cylinder 123 through the driving unit 18, so that the heat exchange plate 122 can be controlled to perform passive self-cleaning when turbulence occurs in the flue gas. However, this cleaning method still depends on the timing of the occurrence of flue gas turbulence. In the prior art, the connecting cylinder 123 can be intermittently controlled to enter the rotatable state, so that the heat exchange plate 122 can swing after encountering turbulent flue gas.

[0040] In another embodiment provided by the present invention, refer to Figure 5-6A sliding shaft 181 is slidably installed in the liquid separation box 15, and the sliding shaft 181 is arranged vertically. A plurality of extrusion blocks 182 corresponding to the connecting tube 123 are fixedly connected to the sliding shaft 181. An arc-shaped extrusion groove 183 is opened at the end of the connecting tube 123. The arc-shaped extrusion groove 183 and the extrusion block 182 are arranged in a corresponding manner. When the extrusion block 182 is completely inserted into the arc-shaped extrusion groove 183, the connecting tube 123 is limited. It should be noted that when the connecting tube 123 is rotated to the limit position, the connecting tube 123 is The limit position of the connection tube 123 rotation corresponds to the maximum compression amount of the torsion spring 121. When the flue gas contacts the heat exchange plate 122, it can push the heat exchange plate 122 to rotate to the maximum swing angle. The maximum swing angle of the heat exchange plate 122 also corresponds to the limit position of the connection tube 123 rotation. The opening size of the arc extrusion groove 183 is designed so that the extrusion block 182 can still contact and squeeze the arc extrusion groove 183 when moving upward, so that the arc extrusion groove 183 can return to its original position and drive the connection tube 123 to return to its original position. The sliding shaft 181 passes through the outer shell 1, and a moving plate 184 is connected between the tops of the two sliding shafts 181. A driving member 185 is installed outside the top wall of the outer shell 1. The driving member 185 is preferably a hydraulic cylinder. The movable end of the driving member 185 is connected to the moving plate 184. The movement of the moving plate 184 in the vertical direction is controlled by the driving member 185, thereby controlling the movement of the sliding shaft 181. The extrusion block 182 includes an arc portion 186 and a triangular extrusion portion 187 connected to the arc block. Of course, the triangular extrusion The middle part of the pressing portion 187 can be set to a hollow state to avoid affecting the flow rate of the heat exchange liquid. The shape of the arc portion 186 is the same as the shape of the arc extrusion groove 183, which is convenient for limiting the arc extrusion groove 183 after being inserted into the arc extrusion groove 183. The triangular extrusion portion 187 is composed of two inclined surfaces on the side close to the arc extrusion groove 183. The triangular extrusion portion 187 is preferably an isosceles triangle structure. The triangular extrusion portion 187 is provided mainly to facilitate the triangular extrusion portion 187 to be pressed into the rotated arc extrusion groove 183.

[0041] When the connecting tube 123 needs to be switched from a rotatable state to a non-rotatable state, the driving member 185 is started, and the driving member 185 controls the movement of the movable plate 184 in the vertical direction to control the upward movement of the sliding shaft 181, and the movement of the sliding shaft 181 drives multiple extrusion blocks 182 to synchronously approach the arc extrusion groove 183. At this time, the triangular extrusion portion 187 first contacts the side wall of the arc extrusion groove 183, and the extrusion block 182 continues to move, so that the triangular extrusion portion 187 squeezes the arc extrusion groove 183 to move and gradually reset the connecting tube 123. When the arc portion 186 is completely stuck in the arc extrusion groove 183, the connecting tube 123 is reset and completely restricted and can no longer rotate freely. At this time, the connecting tube 123 is switched from a rotatable state to a non-rotatable state. In this way, by controlling the state of the heat exchange plate 122 through the driving unit 18, the connecting tube 123 and the heat exchange plate 122 can be intermittently controlled to enter a rotatable state, so that the heat exchange plate 122 can encounter turbulent flue gas and perform passive self-cleaning.

[0042] Obviously, the rotatable state and non-rotatable state of the connecting tube 123 also correspond to the two working modes of the heat exchange plate 122, namely the laminar heat exchange mode and the self-cleaning mode. When the connecting tube 123 is in the non-rotatable state, the heat exchange plate 122 is in a horizontal state and cannot rotate. At this time, the laminar flue gas can pass through the heat exchange plate 122 for stable and efficient heat exchange. When the connecting tube 123 is in the rotatable state, the heat exchange plate 122 is also in a rotatable state. At this time, if turbulent flue gas is encountered, it can passively shake and clean itself to remove dust accumulated on the heat exchange plate 122.

[0043] For further information, see Figure 7-10, the heat exchanger in the prior art is usually installed on the flue gas circulation pipeline. However, the existence of the heat exchanger will inevitably lead to pressure drop (heat exchanger pressure drop refers to the pressure loss caused by fluid flow inside the heat exchanger. It is a prior art and will not be described in detail here), which affects the flue gas flow rate. Moreover, the heat exchange efficiency and pressure drop are corresponding. Increasing the heat exchange efficiency will inevitably increase the pressure drop. However, when the flue gas flow rate is too small, the flue gas stays in the heat exchanger for too long, which can easily cause coking or blockage inside the heat exchanger, hindering heat transfer and thus reducing the heat exchange efficiency. At this time, it is necessary to increase the heat exchanger. Heat exchange efficiency is the main working requirement; in order to solve the above technical problems, a further technical solution is provided, the number of the extrusion blocks 182 is one more than the number of the connecting tubes 123, and the extra extrusion blocks 182 are located above the uppermost connecting tube 123, the number of the connecting tubes 123 is an even number, preferably twelve, and an angle adjustment support rod is formed at the lower end of the arc portion 186, and the lower end of the angle adjustment support rod is an arc surface; a plurality of connecting tubes 123 are arranged in sequence from top to bottom, and every two connecting tubes 123 form a group, and the end of the upper connecting tube 123 (defined as the upper tube) in a group A first driving block 189 is formed on the upper side, and a second driving block 190 is formed on the upper side of the end of a connecting tube 123 (defined as a lower tube) located below in a group. The first driving block 189 and the second driving block 190 have the same shape, both of which are block-shaped structures with inclined surfaces. The first driving block 189 and the second driving block 190 differ only in the orientation of the inclined surfaces. The inclined surface on the first driving block 189 faces the air inlet 13, and the inclined surface on the second driving block 190 faces the air outlet 14. The angle adjustment support rod close to the first driving block 189 is defined as an upper support rod 193, and the upper support rod 193 is aligned with the upper support rod 193. The first driving block 189 is set correspondingly, and the angle adjustment support rod close to the second driving block 190 is defined as the lower support rod 194. The lower support rod 194 and the second driving block 190 are set correspondingly. The upper support rod 193 and the lower support rod 194 are still controlled by the sliding shaft 181 to move synchronously. Multiple heat exchange plates 122 are arranged in sequence from top to bottom, and every two of the heat exchange plates 122 form a group. Each group of heat exchange plates 122 and each group of connecting tubes 123 are set one by one. The heat exchange plate 122 connected to the upper tube in one group is defined as the upper plate 191, and the heat exchange plate 122 connected to the lower tube in one group is defined as the lower plate 192.

[0044] Specifically, the connecting tube 123 also has a state, which is a state where the rotation angle is adjustable. When the rotation angle is adjustable (the connecting tube 123 is in a rotatable state as the initial state for explanation), the driving member 185 is started, and the moving plate 184 is controlled to move in the vertical direction by the driving member 185, thereby controlling the sliding shaft 181 to move downward, and the movement of the sliding shaft 181 drives the multiple extrusion blocks 182 to synchronously approach the first driving block 189 or the second driving block 190. At this time, the upper support rod 193 is close to the first driving block 189, and the lower support rod 194 is close to the second driving block 19 0, continue to move, the upper support rod 193 contacts the inclined surface on the first driving block 189 and squeezes the first driving block 189 to move with it, the lower support rod 194 contacts the inclined surface on the second driving block 190 and squeezes the second driving block 190 to move with it, because the inclined surface on the first driving block 189 faces the air inlet 13, and the inclined surface on the second driving block 190 faces the air outlet 14, therefore, the movement directions of the first driving block 189 and the second driving block 190 are opposite, which also drives the upper cylinder and the lower cylinder to rotate in opposite directions, at the same time, the upper plate 191 is close to the air inlet The end of the air inlet 13 rotates upward, and the end of the lower plate 192 close to the air inlet 13 rotates downward, that is, the upper plate 191 and the lower plate 192 in a group rotate respectively and form a trumpet-shaped structure. At this time, the smoke flow space formed by the trumpet-shaped structure is defined as an adjustable smoke passage, and the end of the adjustable smoke passage close to the air inlet 13 is the smoke inlet end, and the end of the adjustable smoke passage away from the air inlet 13 is the smoke outlet end. Obviously, when the sliding shaft 181 continues to move downward, the rotation amplitudes of the upper plate 191 and the lower plate 192 are different, which will also cause the smoke inlet end and the smoke outlet end to be different. The area of ​​the end changes, and the sliding shaft 181 continues to move downward, which will cause the area of ​​the smoke inlet end to increase and the area of ​​the smoke outlet end to decrease. Obviously, this will make the smoke contact with the heat exchange plate 122 more complete and increase the smoke velocity at the smoke outlet. Correspondingly, the greater the angle of deflection of the heat exchange plate 122, the larger the area that is in full contact with the smoke, which can also improve the heat exchange efficiency of the heat exchange plate 122. Moreover, by adjusting the rotation amplitude of the upper plate 191 and the lower plate 192, the heat exchange efficiency of the heat exchange plate 122 can also be adjusted to adapt to small amounts of smoke to varying degrees.

[0045] To summarize, when the connecting tube 123 is in the state of adjustable rotation angle, the heat exchange plate 122 is in the corresponding adjustable angle mode, that is, the heat exchange plate 122 has three working modes, which are respectively laminar heat exchange mode, self-cleaning mode and adjustable angle mode; in the laminar heat exchange mode, the heat exchange plate 122 is in a horizontal state and cannot rotate. At this time, the laminar flue gas can stably and efficiently exchange heat through the heat exchange plate 122. In the self-cleaning mode, the connecting tube 123 is in a rotatable state, and the heat exchange plate 122 is also in a rotatable state. At this time, if turbulent flue gas is encountered, it can passively shake and clean itself. In the adjustable angle mode, the rotation angle of the upper plate 191 and the lower plate 192 can be adjusted by the downward sliding distance of the sliding shaft 181, so as to adjust the heat exchange efficiency of the heat exchange plate 122. In this way, when the flue gas flow is too small, the heat exchange efficiency is correspondingly improved.

[0046] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A nickel-steel composite heat exchanger device, comprising an outer shell and a heat exchange cavity opened inside the outer shell, wherein a heat exchange mechanism is installed in the heat exchange cavity, characterized in that: The heat exchange mechanism comprises a plurality of heat exchange plates rotatably mounted in the heat exchange cavity through torsion springs; The torsion spring enables the heat exchange plate to have a self-cleaning position, in which the fluctuation of the airflow in the heat exchange cavity can drive the heat exchange plate to swing back and forth; Two liquid separation boxes are installed in the heat exchange chamber, one of the liquid separation boxes is connected to a liquid inlet pipe, the liquid inlet pipe passes through the outer shell and extends to the outside of the heat exchange chamber, and the other liquid separation box is connected to a liquid outlet pipe, the liquid outlet pipe passes through the outer shell and extends to the outside of the heat exchange chamber; The heat exchange plate is rotatably installed between the two liquid separation boxes through a connecting tube, the connecting tube extends into the liquid separation box, a mounting tube is fixed on the inner wall of the liquid separation box, the mounting tube is sleeved on the outer side of the connecting tube, and the mounting tube and the connecting tube are connected by a torsion spring; The connecting tube has a rotatable state and a non-rotatable state, and further comprises a driving unit, wherein the driving unit is used to drive the connecting tube to switch between the rotatable state and the non-rotatable state; A sliding shaft is slidably installed in the liquid separation box, and a plurality of extrusion blocks corresponding to the connecting tubes are fixedly connected to the sliding shaft. An arc-shaped extrusion groove is opened at the end of the connecting tube, and the arc-shaped extrusion groove and the extrusion block are correspondingly arranged. When the extrusion block is completely inserted into the arc-shaped extrusion groove, the connecting tube is in a non-rotatable state; The sliding shaft passes through the outer shell, a moving plate is connected between the two sliding shafts, a driving member is installed outside the top wall of the outer shell, a driving member is installed in the heat exchange cavity, and a movable end of the driving member is connected to the moving plate.

2. A nickel-steel composite heat exchanger device according to claim 1, characterized in that: The outer shell is provided with an air inlet and an air outlet for gas circulation, and the air inlet and the air outlet are arranged correspondingly.

3. A nickel-steel composite heat exchanger device according to claim 2, characterized in that: A heat exchange area is formed between the plurality of heat exchange plates. In an initial state, the flue gas passes through the heat exchange area in a horizontal direction to perform heat exchange.

4. The nickel-steel composite heat exchanger equipment according to claim 1, characterized in that: The plurality of heat exchange plates are arranged in sequence from top to bottom, and the distance between two adjacent heat exchange plates is the same.

5. The nickel-steel composite heat exchanger equipment according to claim 1, characterized in that: The extrusion block comprises an arc-shaped portion and a triangular extrusion portion connected to the arc-shaped block.

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