A boiler waste heat recycling device

Abstract

This utility model relates to the field of boiler waste heat recovery technology and discloses a boiler waste heat recovery and utilization device. The heat exchange cylinder base can be directly connected to the steam pipeline for installation. Through conduction heat exchange, the residual heat in the steam can be recovered and utilized. A first heat exchange tube and a second heat exchange tube with different orifice diameters are used as the steam flow structure. Both the first and second heat exchange tubes are installed in a circumferential distribution to achieve efficient heat exchange and recovery. The second heat exchange tube with a smaller orifice diameter is set in the middle of the connecting part as a straight-through heat exchange structure, which can divert and connect the steam without affecting the overall steam flow. The first heat exchange tube with a larger orifice diameter is set on the outer periphery of the connecting part. The continuous bend in the middle of the first heat exchange tube can obstruct the flow of the incoming steam and allow for large-stroke heat dissipation. The combination of the dual structures can effectively improve the heat exchange and recovery efficiency of the steam and ensure the smooth flow of the steam.

Description

Technical Field

[0001] This utility model relates to the field of boiler waste heat recovery technology, specifically a device for recovering and utilizing boiler waste heat. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. In industrial production, steam is an energy source with extremely wide applications. A steam boiler is a conversion device that utilizes steam energy. It heats water to certain parameters and produces high-temperature and high-pressure steam. The high-temperature and high-pressure steam is used to drive a steam turbine to complete the mechanical energy conversion for the operation of the equipment.

[0003] After energy conversion, the steam discharged from the turbine still contains a large amount of residual heat. In conventional processing, this type of steam is often directly discharged, resulting in a waste of heat, which is not conducive to energy conservation, emission reduction and improvement of energy utilization efficiency. Therefore, a boiler waste heat recovery and utilization device is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a device for recovering and utilizing waste heat from boilers, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a boiler waste heat recovery and utilization device, including a cylinder base mechanism and a heat exchange mechanism. The cylinder base mechanism includes a heat exchange cylinder base, a sealing end cap, and a central support. The heat exchange cylinder base is in the shape of a hollow cylinder base. An outlet pipe and an inlet pipe are respectively provided on the upper and lower sides of the heat exchange cylinder base. The sealing end cap is installed on the open sides at both ends of the heat exchange cylinder base.

[0006] The heat exchange mechanism is installed inside the heat exchange cylinder base. The heat exchange mechanism includes a first heat exchange tube and a second heat exchange tube. The first heat exchange tube is disposed on the outer ring side of the heat exchange cylinder base connecting part. A continuous bend is provided in the middle of the first heat exchange tube. The second heat exchange tube is directly installed on the inner ring side of the heat exchange cylinder base connecting part. The middle support is installed in the middle of the first heat exchange tube and the second heat exchange tube.

[0007] Preferably, the outlet pipe and the inlet pipe are vertically fixed and connected to both ends of the heat exchanger base, and the outlet pipe and the inlet pipe are arranged in an alternating pattern.

[0008] Preferably, multiple first heat exchange tubes are provided, and several first heat exchange tubes are evenly distributed in a circumferential shape and installed on the outer ring side of the heat exchange cylinder seat connecting part, and the continuous bent tube part is distributed in an equidistant shape in the middle of the first heat exchange tube.

[0009] Preferably, the second heat exchange tube is a straight tube, and multiple second heat exchange tubes are provided, with several second heat exchange tubes evenly distributed in a circumferential shape and installed on the inner ring side of the heat exchange cylinder seat connecting part.

[0010] Preferably, multiple central supports are provided, and several central supports are evenly fitted and supported inside the heat exchange cylinder seat in an equidistant manner.

[0011] Preferably, the central support is provided with a heat pipe support hole in the middle, and the straight pipe sections of the first heat exchange pipe and the second heat exchange pipe are inserted and supported inside the heat pipe support hole. The outer ring of the central support is uniformly provided with a flow groove in a circular shape.

[0012] Preferably, the sealing end caps are provided in pairs. The two sets of sealing end caps are fastened with bolts to seal and support the two open sides of the heat exchange cylinder base. The middle of the sealing end cap is provided with an end tube mounting hole. The ends of the first heat exchange tube and the second heat exchange tube are fitted and supported inside the end tube mounting hole.

[0013] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0014] This device adopts a cylindrical base structure, allowing the heat exchange cylinder base to be directly connected to the steam pipeline. This design minimizes installation requirements and facilitates easy connection. Through conductive heat exchange, residual heat in the steam can be recovered and utilized, effectively improving the energy efficiency of the equipment. Furthermore, it employs a combination of straight-through and flow-blocking heat exchange mechanisms. First and second heat exchange tubes with different orifice diameters serve as the steam flow structure, both arranged circumferentially to effectively increase the heat exchange contact area and achieve efficient heat exchange and recovery. The second heat exchange tube with a smaller orifice diameter is positioned on the straight-through side of the connecting section, acting as a straight-through heat exchange structure. This allows for steam diversion without affecting the overall steam flow. The first heat exchange tube with a larger orifice diameter is positioned on the outer periphery of the connecting section. The continuous bend in the middle of the first heat exchange tube obstructs the incoming steam and allows for large-stroke heat dissipation. This dual-structure combination effectively improves the heat exchange and recovery efficiency of the steam, ensures smooth steam flow, and enhances the operational safety of the equipment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall installation upper three-dimensional structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall installation lower three-dimensional structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the heat exchanger base of this utility model.

[0019] Figure 4 This is a schematic diagram of the working and installation structure of the heat exchange mechanism of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the first and second heat exchange tubes of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Heat exchanger base; 2. Sealing end cap; 3. Middle support; 4. Inlet pipe; 5. Outlet pipe; 6. First heat exchanger tube; 7. Second heat exchanger tube; 8. Continuous bend section. Detailed Implementation

[0022] 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.

[0023] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0024] Example

[0025] Please see Figure 1-5 This utility model provides a technical solution: a boiler waste heat recovery and utilization device, including a drum base mechanism and a heat exchange mechanism. The drum base mechanism is used for the installation and support of the heat exchange mechanism. The drum base mechanism includes a heat exchange drum base 1, a sealing end cover 2, and a central support 3, as shown in the attached figure. Figure 1As shown, the heat exchanger base 1 is a hollow cylindrical base, serving as the heat exchange chamber structure. The cylindrical base design allows for direct connection and installation to the steam pipeline, simplifying installation and reducing installation requirements. Through conduction heat exchange, residual heat in the steam can be recovered and utilized, effectively improving the equipment's energy efficiency. To facilitate water circulation, as shown in the attached diagram... Figure 2 As shown, an outlet pipe 5 and an inlet pipe 4 are respectively provided on the upper and lower sides of the heat exchanger base 1. The outlet pipe 5 and the inlet pipe 4 are vertically fixed and connected to the two ends of the heat exchanger base 1. The outlet pipe 5 and the inlet pipe 4 are arranged in an alternating pattern to allow external water to circulate.

[0026] The heat exchange mechanism is installed inside the heat exchange cylinder base 1 for steam circulation and heat exchange. The heat exchange mechanism includes a first heat exchange tube 6 and a second heat exchange tube 7, as shown in the attached figure. Figure 4 As shown, multiple first heat exchange tubes 6 are provided. The first heat exchange tubes 6 are located on the outer ring side of the connecting portion of the heat exchange cylinder base 1. Several first heat exchange tubes 6 are evenly distributed in a circumferential shape on the outer ring side of the connecting portion of the heat exchange cylinder base 1 for the flow of steam in the outer ring. To increase the heat exchange contact area, a continuous bend 8 is provided in the middle of the first heat exchange tube 6, as shown in the attached figure. Figure 5 As shown, the continuous curved tube sections 8 are equidistantly distributed in the middle of the first heat exchange tube 6, and the second heat exchange tube 7 is a straight tube, which is installed directly on the inner ring side of the connecting part of the heat exchange cylinder base 1, as shown in the attached figure. Figure 4 As shown, multiple second heat exchange tubes 7 are provided, and several second heat exchange tubes 7 are evenly distributed in a circumferential shape and installed on the inner ring side of the connecting part of the heat exchange cylinder seat 1 for the flow of steam on the inner ring side. A heat exchange mechanism with a combination of straight-through and flow-blocking is adopted. First heat exchange tubes 6 and second heat exchange tubes 7 with different orifice diameters are used as the steam flow structure. Both the first heat exchange tubes 6 and the second heat exchange tubes 7 are installed in a circumferential shape, which can effectively increase the heat exchange contact area of ​​steam and achieve efficient heat exchange and recovery. The second heat exchange tubes 7 with smaller orifice diameter are set in the middle of the connecting part as a straight-through heat exchange structure, which can divert and connect steam without affecting the overall flow of steam. The first heat exchange tubes 6 with larger orifice diameter are set in the outer ring side of the connecting part. The continuous bend section 8 in the middle of the first heat exchange tube 6 can block the flow of incoming steam and allow for large-stroke flow heat dissipation. The combination of the dual structures can effectively improve the heat exchange and recovery efficiency of steam and ensure the smooth flow of steam, thereby improving the working safety of the equipment.

[0027] The central support 3 is installed in the middle of the first heat exchange tube 6 and the second heat exchange tube 7 to provide stable support for the middle sections of the tubes. Specifically, see attached... Figure 3As shown, there are two central supports 3. The two central supports 3 are evenly fitted and installed inside the heat exchange cylinder seat 1 at equal intervals. In order to facilitate the support and installation of the first heat exchange tube 6 and the second heat exchange tube 7, a heat pipe support hole is provided in the middle of the central support 3. The straight pipe part of the first heat exchange tube 6 and the second heat exchange tube 7 is inserted and supported inside the heat pipe support hole. In order to facilitate the circulation of water, a flow groove is evenly provided in a circular shape on the outer ring side of the middle of the central support 3.

[0028] Sealing end caps 2 are installed on the open sides of both ends of the heat exchanger base 1 to seal the ports of the heat exchanger base 1 and support the ports of the heat exchange tubes, as shown in the attached diagram. Figure 3 As shown, the sealing end caps 2 are installed in pairs. The two sets of sealing end caps 2 are fastened with bolts to seal and support the two open sides of the heat exchanger base 1, which can seal and protect the ends of the heat exchanger base 1. In order to facilitate the sealing and support of the heat exchanger tube ports, an end tube mounting hole is provided through the middle of the sealing end cap 2. The ends of the first heat exchanger tube 6 and the second heat exchanger tube 7 are fitted and supported inside the end tube mounting hole. While providing stable support for the ports of the first heat exchanger tube 6 and the second heat exchanger tube 7, the port sides of the heat exchanger tubes can be sealed to ensure the normal operation of the equipment.

[0029] The working principle or structural principle is as follows: During installation, the heat exchanger base 1 is installed inside the steam discharge pipe at a slight inclination, and the hot water circuit is connected. During operation, external cold water flows into and fills the inner cavity of the heat exchanger base 1 through the water inlet pipe 4 at the bottom. At the same time, steam enters through the end pipe side of the heat exchanger base 1. The steam entering is divided into two groups and flows through the first heat exchange pipe 6 and the second heat exchange pipe 7 respectively. The steam in the middle passes through the second heat exchange pipe 7 directly into the heat exchanger base 1 and conducts heat exchange with the water before being discharged. Meanwhile, the steam on the outside passes through the first heat exchange pipe 6 into the heat exchanger base 1 and conducts heat exchange with the water before being discharged. The water in the heat exchanger base 1 is heated by heat conduction. After that, the heated water flows out through the water outlet pipe 5 at the top of the heat exchanger base 1 to supply external production use. This cycle completes the recovery and utilization of steam heat.

[0030] In summary, this device adopts a cylindrical base structure, where the heat exchanger base 1 can be directly connected to the steam pipeline, resulting in lower installation requirements and easier connection. Through conduction heat exchange, residual heat in the steam can be recovered and utilized, effectively improving the energy efficiency of the equipment. Furthermore, it employs a combination of straight-through and flow-blocking heat exchange mechanisms. A first heat exchanger tube 6 and a second heat exchanger tube 7 with different orifice diameters serve as the steam flow structure. Both the first and second heat exchanger tubes 6 and 7 are circumferentially distributed, effectively increasing the heat exchange contact area of ​​the steam and achieving efficient heat exchange and recovery. The second heat exchanger tube 7 with a smaller orifice diameter is positioned on the straight-through side in the middle of the connecting section, serving as a straight-through heat exchange structure. This allows for steam diversion without affecting the overall steam flow. The first heat exchanger tube 6 with a larger orifice diameter is positioned on the outer periphery of the connecting section. The continuous bend 8 in the middle of the first heat exchanger tube 6 allows for flow blocking and large-stroke heat dissipation of the incoming steam. This dual-structure combination effectively improves the heat exchange and recovery efficiency of the steam and ensures smooth steam flow, enhancing the operational safety of the equipment.

[0031] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A device for recovering and utilizing waste heat from a boiler, comprising a drum base mechanism and a heat exchange mechanism, characterized in that: The cylinder seat mechanism includes a heat exchange cylinder seat (1), a sealing end cap (2) and a central support (3). The heat exchange cylinder seat (1) is a hollow cylinder seat. The upper and lower sides of the heat exchange cylinder seat (1) are respectively provided with an outlet pipe (5) and an inlet pipe (4). The sealing end cap (2) is installed on the open sides of both ends of the heat exchange cylinder seat (1). The heat exchange mechanism is installed inside the heat exchange cylinder seat (1). The heat exchange mechanism includes a first heat exchange tube (6) and a second heat exchange tube (7). The first heat exchange tube (6) is located on the outer ring side of the connecting part of the heat exchange cylinder seat (1). A continuous bend (8) is provided in the middle of the first heat exchange tube (6). The second heat exchange tube (7) is installed in a straight line on the inner ring side of the connecting part of the heat exchange cylinder seat (1). The middle support (3) is supported and installed in the middle of the first heat exchange tube (6) and the second heat exchange tube (7).

2. The boiler waste heat recovery and utilization device according to claim 1, characterized in that: The outlet pipe (5) and the inlet pipe (4) are vertically fixed and connected to each other on both ends of the heat exchange cylinder base (1), and the outlet pipe (5) and the inlet pipe (4) are arranged in an alternating pattern.

3. The boiler waste heat recovery and utilization device according to claim 2, characterized in that: The first heat exchange tube (6) is provided in multiple ways. Several first heat exchange tubes (6) are evenly distributed in a circular shape and installed on the outer ring side of the heat exchange cylinder seat (1) connecting part. The continuous bent tube part (8) is distributed in an equidistant manner in the middle of the first heat exchange tube (6).

4. The boiler waste heat recovery and utilization device according to claim 3, characterized in that: The second heat exchange tube (7) is a straight tube. Multiple second heat exchange tubes (7) are provided. Several second heat exchange tubes (7) are evenly distributed in a circumferential shape and installed on the inner ring side of the connecting part of the heat exchange cylinder seat (1).

5. The boiler waste heat recovery and utilization device according to claim 4, characterized in that: The central support (3) is provided in multiple ways, and several central supports (3) are evenly fitted and supported inside the heat exchange cylinder seat (1) in an equidistant manner.

6. The boiler waste heat recovery and utilization device according to claim 5, characterized in that: The middle support (3) is provided with a heat pipe support hole in the middle. The straight pipe sections of the first heat exchange pipe (6) and the second heat exchange pipe (7) are inserted and supported on the inner side of the heat pipe support hole. The middle outer ring of the middle support (3) is uniformly provided with a flow groove in a circular shape.

7. The boiler waste heat recovery and utilization device according to claim 1, characterized in that: The sealing end caps (2) are installed in pairs. The two sets of sealing end caps (2) are fastened with bolts to seal and support the two ends of the heat exchange cylinder seat (1). The sealing end caps (2) have end tube mounting holes through the middle. The ends of the first heat exchange tube (6) and the second heat exchange tube (7) are fitted and supported inside the end tube mounting holes.

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