A heat exchange plug rod structure of heat exchange fins is increased

Abstract

The utility model provides a kind of heat exchange plug rod structure of increasing heat exchange fin, it is related to heat exchange equipment technical field, including water pipe mechanism, water pipe mechanism is hollow structure, and the outer circumferential surface of water pipe mechanism is fixedly connected with heat dissipation fin, solve the heat exchange structure for the biomass combustion furnace of current, there is often insufficient heat exchange area, water flow in heat exchange pipeline flows gently, leading to the problem of low heat exchange efficiency, it is difficult to fully utilize the heat generated by biomass combustion, the problem of affecting the energy utilization efficiency of biomass combustion furnace, the flow state of water flow is changed by the shunt baffle on the limiting plug rod and screw conveyor, the gas outlet hole of shunt baffle transports the gas after evaporation, screw conveyor makes gas form turbulent flow, break the condition of gas gentle flow, enhance the heat exchange efficiency of gas and water pipe mechanism and limiting plug rod, to fully utilize the heat generated by biomass combustion, improve the energy utilization efficiency of biomass combustion furnace.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchange equipment, and specifically relates to a heat exchange rod structure with added heat exchange plates. Background Technology

[0002] Currently, in the use of biomass combustion furnaces, heat exchange structures are needed to transfer the heat generated by combustion to the internal fluid in order to achieve effective heat utilization. Existing heat exchange structures for biomass combustion furnaces often have problems such as insufficient heat exchange area and slow water flow in the heat exchange pipes, resulting in low heat exchange efficiency. This makes it difficult to fully utilize the heat generated by biomass combustion and affects the energy utilization efficiency of biomass combustion furnaces.

[0003] Therefore, in view of the shortcomings of the above-mentioned solutions in actual production and implementation, modifications and improvements have been made. At the same time, in the spirit and concept of seeking excellence, and with the assistance of professional knowledge and experience, and after much ingenuity and experimentation, this utility model was created. It provides a heat exchange rod structure with added heat exchange plates to solve the problem that the existing heat exchange structures used in biomass combustion furnaces often have insufficient heat exchange area and slow water flow in the heat exchange pipe, resulting in low heat exchange efficiency. This makes it difficult to fully utilize the heat generated by biomass combustion and affects the energy utilization efficiency of the biomass combustion furnace. Utility Model Content

[0004] This invention proposes a heat exchange rod structure with added heat exchange plates, which solves the problem that existing heat exchange structures used in biomass combustion furnaces often have insufficient heat exchange area and slow water flow in the heat exchange pipe, resulting in low heat exchange efficiency. This makes it difficult to fully utilize the heat generated by biomass combustion and affects the energy utilization efficiency of the biomass combustion furnace.

[0005] The technical solution of this utility model is implemented as follows: a heat exchange plug structure with added heat exchange fins includes: a water pipe mechanism, the water pipe mechanism is a hollow structure, and heat dissipation fins are fixedly connected to the outer peripheral surface of the water pipe mechanism.

[0006] A limiting rod is inserted into the center of the water pipe mechanism. A connecting assembly is fixedly connected in a linear array to the bottom of the outer periphery of the limiting rod. The side of the connecting assembly furthest from the limiting rod is fixedly connected to the inner wall of the water pipe mechanism. A flow divider is fixedly connected to the middle section of the outer periphery of the limiting rod. The flow divider has through holes arranged in a ring array inside, which serve as air vents.

[0007] In a preferred embodiment, a spiral conveyor is fixedly connected to the upper side of the outer peripheral surface of the limiting rod. The spiral conveyor is located above the diversion partition, and the connecting assembly is located below the diversion partition.

[0008] In a preferred embodiment, the inner wall of the water pipe mechanism is provided with positioning slots. There are four positioning slots in total, and the four positioning slots are arranged in a circular array on the inner wall of the water pipe mechanism.

[0009] In a preferred embodiment, an annular groove is provided on the top surface of the water pipe mechanism. This annular groove is a sealing groove, and a sealing cover is installed on the top of the water pipe mechanism.

[0010] In a preferred embodiment, each of the four positioning slots has a positioning hole inside, and a fixing bolt is screwed into the positioning hole.

[0011] In a preferred embodiment, the main body of the sealing cover is circular, and a sealing ring is fixedly connected to the bottom end of the sealing cover. The sealing ring matches the sealing groove opened on the top surface of the water pipe mechanism.

[0012] In a preferred embodiment, the bottom end face of the sealing cover is fixedly connected with a plug assembly in a ring array. The plug assembly matches the positioning slot opened in the water pipe mechanism, and the interior of the plug assembly is also provided with a positioning screw hole that matches the fixing bolt.

[0013] After using the above technical solution, the beneficial effects of this utility model are:

[0014] 1. In this utility model, by setting heat dissipation fins on the outer periphery of the water pipe mechanism, the heat exchange area is effectively increased, which solves the problem of insufficient heat exchange area in the existing heat exchange structure. This allows the heat generated by biomass combustion to be more fully transferred to the water pipe mechanism, providing more heat sources for subsequent heat exchange with the internal water flow and improving the foundation of heat transfer.

[0015] 2. In this utility model, the flow state of the water is changed by the diversion baffle and the spiral conveyor on the limiting rod. The air outlet of the diversion baffle conveys the evaporated gas, and the spiral conveyor makes the gas turbulent, breaking the smooth flow of the gas and enhancing the heat exchange efficiency between the gas and the water pipe mechanism and the limiting rod. This makes full use of the heat generated by biomass combustion and improves the energy utilization efficiency of the biomass combustion furnace.

[0016] 3. In this utility model, the limiting rod is stably fixed inside the water pipe mechanism through the connecting component, which not only ensures the stability of the overall structure, but also guides the water flow to evaporate into gas and form turbulence by means of the air outlet of the diversion baffle and the spiral conveyor, so that the water flow has more sufficient contact with the inner wall of the water pipe mechanism and the surface of the limiting rod, which solves the problem of low heat exchange efficiency caused by slow water flow and improves the heat conversion effect.

[0017] 4. In this utility model, the sealing cover plate and water pipe mechanism are precisely fixed by positioning slots, insert blocks and fixing bolts, and sealed with sealing rings and sealing grooves to prevent water leakage from affecting heat exchange. At the same time, the heat dissipation fins enhance heat absorption, thus improving the energy utilization rate of the biomass combustion furnace.

[0018] 5. In this utility model, a specially designed insert rod is inserted inside the boiler water tubes. This structural design allows for the arrangement of more heat exchange tube bundles within a limited water volume, thereby effectively increasing the total heat exchange area. The insert rod integrates a spiral separation device in the fluid phase change region, forming a two-stage filtration system for in-tube flow together with the top cover plate. Furthermore, by adding heat exchange fins to the outer wall of the tube bundle, the external heat exchange area is further expanded without affecting the inherent easy-to-clean and easy-to-maintain characteristics of the biomass boiler.

[0019] 6. In this utility model, the dual-stage filtration system in the water pipe can efficiently separate and block condensate. The separated liquid water can be reintegrated into the boiler water circulation. The high-saturation steam that has undergone preliminary separation is transported to the reheater. The steam undergoes micro-superheating treatment in the reheater and is further separated by a three-stage separation device, ultimately outputting high-dryness saturated steam. This results in a significant increase in the rated output of the equipment and a substantial optimization of the overall thermal efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional front view of the heat exchange plug structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the sealing cover plate and sealing ring combination structure of the heat exchange plug structure of this utility model;

[0023] Figure 3 This is a front view schematic diagram of the heat exchange plug structure of this utility model;

[0024] Figure 4 This is a top view of the heat exchange plug structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the combined structure of the limiting plug and the connecting component of the heat exchange plug structure of this utility model;

[0026] Figure 6This is a side view of the heat exchange plug structure of this utility model;

[0027] In the diagram, 1 is the water pipe mechanism; 101 is the heat dissipation fin; 1011 is the positioning slot; 1012 is the positioning hole; 1013 is the fixing bolt; 1014 is the sealing groove; 2 is the limiting rod; 201 is the connecting assembly; 2011 is the diversion baffle; 2012 is the air outlet; 2013 is the spiral conveyor; 3 is the sealing cover plate; 301 is the sealing ring; 3011 is the vent groove; 3012 is the plug assembly; and 3013 is the positioning screw hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1-6 As shown, a heat exchange plug structure with added heat exchange fins includes: a water pipe mechanism 1, which has an internal hollow structure, and heat dissipation fins 101 are fixedly connected to the outer peripheral surface of the water pipe mechanism 1.

[0030] A limiting rod 2 is inserted into the center of the water pipe mechanism 1. A connecting component 201 is fixedly connected to the bottom of the outer periphery of the limiting rod 2 in a straight array. The side of the connecting component 201 away from the limiting rod 2 is fixedly connected to the inner wall of the water pipe mechanism 1. A flow divider 2011 is fixedly connected to the middle section of the outer periphery of the limiting rod 2. The flow divider 2011 has through holes in a ring array inside, which are air outlets 2012.

[0031] Among them, a spiral conveyor 2013 is fixedly connected to the upper side of the outer peripheral surface of the limiting rod 2. The spiral conveyor 2013 is located above the diversion partition 2011, and the connecting component 201 is located below the diversion partition 2011. A positioning slot 1011 is provided on the inner wall of the water pipe mechanism 1. There are four positioning slots 1011 in total, and the four positioning slots 1011 are arranged in a ring array on the inner wall of the water pipe mechanism 1.

[0032] The four positioning slots 1011 are provided with positioning holes 1012 inside, and fixing bolts 1013 are screwed into the positioning holes 1012. An annular groove is provided on the top surface of the water pipe mechanism 1. The annular groove is a sealing groove 1014. A sealing cover plate 3 is installed on the top of the water pipe mechanism 1.

[0033] The main body of the sealing cover plate 3 is circular, and a sealing ring 301 is fixedly connected to the bottom end of the sealing cover plate 3. The sealing ring 301 matches the sealing groove 1014 opened on the top surface of the water pipe mechanism 1. Insertion block assembly 3012 is fixedly connected in a ring array on the bottom surface of the sealing cover plate 3. The insertion block assembly 3012 matches the positioning slot 1011 opened in the water pipe mechanism 1. The insertion block assembly 3012 also has a positioning screw hole 3013 that matches the fixing bolt 1013 inside. The sealing cover plate 3 has a ventilation groove 3011 in a ring array inside.

[0034] When in use, water flows into the hollow cavity inside the water pipe mechanism 1 from the bottom. It first exchanges heat with the heat dissipation fins 101 on the outer periphery. The heat dissipation fins 101 increase the contact area with the external high-temperature environment (such as a biomass combustion furnace), quickly absorb heat and transfer it to the inside of the water pipe mechanism 1, so that the water gradually heats up and undergoes a phase change.

[0035] After the initial phase change, the gas-liquid mixture flows upward and passes through the diversion baffle 2011 in the middle section of the limiting rod 2. The diversion baffle 2011 performs initial diversion of the fluid through the air outlet 2012 of the annular array, forcing the gas-liquid mixture to rise along a specific path.

[0036] After entering the spiral conveyor 2013 area above the limit plug rod 2, the fluid is guided by the spiral structure to form a spiral motion, and achieves primary separation under the action of centrifugal force: the denser liquid is thrown towards the inner wall of the water pipe mechanism 1 and continues to absorb heat to complete the phase change; the less dense steam moves upward along the center of the spiral, and the initially separated steam carries some fine droplets into the next stage.

[0037] The steam separated in the first stage flows upward to the sealing cover plate 3 at the top of the water pipe mechanism 1. The sealing cover plate 3 is tightly fitted with the sealing groove 1014 of the water pipe mechanism 1 through the sealing ring 301 at the bottom, forming a closed space, which forces the steam to be discharged only through the venting grooves 3011 of the annular array.

[0038] When the steam passes through the venting groove 3011, it is blocked by the cover plate and disturbed by the airflow, and the tiny droplets carried in it are further separated: the droplets fall back to the lower chamber to re-participate in heat exchange after hitting the cover plate due to inertia, while the purer steam enters the intermediate micro-superheating section through the venting groove 3011.

[0039] After secondary separation, the steam enters the intermediate micro-superheating section. This area can be reheated by an external heat source (such as the waste heat generated by biomass combustion), which is called the "reheating process", so that the steam temperature is further increased and becomes high dryness saturated steam.

[0040] Finally, the reheated high-dryness saturated steam is discharged from the structure's output end, completing the entire heat exchange and separation process. The gas-liquid separation efficiency is enhanced by the first-stage spiral centrifugal separation, and the steam is further purified by the second-stage top plate separation. Combined with the secondary heating in the reheat section, this structure achieves a highly efficient conversion from water flow to high-dryness saturated steam, significantly improving heat utilization and steam quality.

[0041] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components, and can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A heat exchange rod structure with added heat exchange fins, comprising a water pipe mechanism (1), characterized in that, The water pipe mechanism (1) has an internal hollow structure, and heat dissipation fins (101) are fixedly connected to the outer peripheral surface of the water pipe mechanism (1). A limiting rod (2) is inserted into the center of the water pipe mechanism (1). A connecting component (201) is fixedly connected to the bottom of the outer periphery of the limiting rod (2) in a straight array. The side of the connecting component (201) away from the limiting rod (2) is fixedly connected to the inner wall of the water pipe mechanism (1). A diversion baffle (2011) is fixedly connected to the middle section of the outer periphery of the limiting rod (2). The diversion baffle (2011) has through holes in a ring array inside, which are air outlets (2012).

2. The heat exchange insert structure with added heat exchange plates according to claim 1, characterized in that, A spiral conveyor (2013) is fixedly connected to the upper side of the outer peripheral surface of the limiting rod (2). The spiral conveyor (2013) is located above the diversion partition (2011), and the connecting assembly (201) is located below the diversion partition (2011).

3. The heat exchange insert structure with added heat exchange plates according to claim 1, characterized in that, The water pipe mechanism (1) has a positioning slot (1011) on its inner wall. There are four positioning slots (1011) in total, and the four positioning slots (1011) are arranged in a ring array on the inner wall of the water pipe mechanism (1).

4. The heat exchange insert structure with added heat exchange plates according to claim 3, characterized in that, The four positioning slots (1011) are provided with positioning holes (1012) inside, and a fixing bolt (1013) is screwed into the positioning hole (1012).

5. The heat exchange insert structure with added heat exchange plates according to claim 1, characterized in that, The top surface of the water pipe mechanism (1) is provided with an annular groove, which is a sealing groove (1014), and a sealing cover plate (3) is installed on the top of the water pipe mechanism (1).

6. The heat exchange insert structure with added heat exchange plates according to claim 5, characterized in that, The main body of the sealing cover (3) is circular, and a sealing ring (301) is fixedly connected to the bottom end of the sealing cover (3). The sealing ring (301) matches the sealing groove (1014) opened on the top surface of the water pipe mechanism (1). The interior of the sealing cover (3) is provided with a ring array of ventilation grooves (3011).

7. The heat exchange insert structure with added heat exchange plates according to claim 6, characterized in that, The bottom end face of the sealing cover plate (3) is fixedly connected with the plug assembly (3012) in a ring array. The plug assembly (3012) matches the positioning slot (1011) opened in the water pipe mechanism (1), and the plug assembly (3012) also has a positioning screw hole (3013) that matches the fixing bolt (1013) inside.

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