Split type glass chemical fiber kiln heat pipe waste heat boiler

Abstract

The invention discloses a split type glass chemical fiber kiln heat pipe waste heat boiler which comprises a boiler water tank, a heat pipe heat transfer pipeline is arranged in the boiler water tank, and the heat pipe heat transfer pipeline is arranged in the boiler water tank in a coiled mode. The device is characterized in that the heat pipe heat transfer pipeline is formed by alternately connecting a plurality of straight pipe type heat transfer sections and spiral pipe type heat transfer sections in series; the straight pipe type heat transfer section comprises a straight pipe type smoke pipe, and the straight pipe type smoke pipe is sleeved with a first heat pipe. The spiral pipe type heat transfer section comprises a spiral smoke pipe, and the outer side of the spiral smoke pipe is sleeved with a second heat pipe. The straight pipe type smoke pipes and the spiral smoke pipes are alternately connected and sequentially communicated, and the adjacent first heat pipes and second heat pipes are communicated with each other. According to the split type heat pipe waste heat boiler, the straight pipe type heat transfer sections and the spiral pipe type heat transfer sections are alternately combined, the straight pipe type heat transfer sections can improve the flowing speed of smoke, the spiral pipe type heat transfer sections can reduce the flowing speed of the smoke, and the heat efficiency of the boiler is improved by controlling the speed of the smoke.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat boilers, and more particularly to a split type heat pipe waste heat boiler for a glass chemical fiber kiln. Background Art

[0002] A waste heat boiler is a device that uses the waste heat in high-temperature flue gas emitted during industrial processes to generate steam or hot water. This technology can not only improve energy utilization efficiency, but also reduce environmental pollution. Waste heat boilers are mainly used to recover waste heat from flue gas in industrial processes. Through gas-water / steam heat exchangers, they use waste heat from high-temperature flue gas, waste heat from chemical reactions, waste heat from combustible gases, and waste heat from high-temperature products to produce steam or hot water for process flow or to enter the pipe network for heating. The design of waste heat boilers requires that the equipment has high energy recovery and utilization efficiency, with a thermal efficiency of not less than 80%, and that the exhaust gas emissions of the equipment meet national environmental protection standards and limit requirements.

[0003] During the production process, glass fiber kilns will generate a large amount of high-temperature flue gas, which contains a large amount of heat. By using heat pipe waste heat boilers, the waste heat in the flue gas can be recovered to generate low-pressure saturated steam for heating and atomizing heavy oil, pipe insulation, and heating for daily life. For flue gas with large exhaust volume and high temperature, heat pipe waste heat boilers can be used to generate high-pressure steam (3.5MPa) for steam turbine power generation, or directly drive turbine air compressors, fans, water pumps and other machinery.

[0004] In the design process of waste heat boiler, the combination of smoke pipe and heat pipe has a great influence on the convenience of its installation and the transmission of heat efficiency. Prior art CN 213453704 U discloses a heat pipe waste heat boiler, in which high-temperature flue gas flows in the gas pipe to heat the heat transfer oil in the heat transfer pipe, and the heated heat transfer oil transfers the heat to the inside of the boiler to complete the waste heat utilization. However, the flow speed of flue gas in the gas pipe is closely related to the utilization of its heat energy. Appropriately reducing the flow speed of flue gas can better improve the utilization of heat energy.

[0005] Therefore, how to provide a heat pipe waste heat boiler for a glass fiber kiln with higher thermal efficiency is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0006] In view of this, the present invention provides a split glass fiber kiln heat pipe waste heat boiler, aiming to solve the above technical problems.

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

[0008] A split type heat pipe waste heat boiler for a glass fiber kiln, comprising a boiler water tank, wherein a heat pipe heat transfer pipeline is arranged in the boiler water tank, and the heat pipe heat transfer pipeline is coiled inside the boiler water tank; characterized in that the heat pipe heat transfer pipeline is composed of a plurality of straight pipe heat transfer sections and spiral pipe heat transfer sections alternately connected in series;

[0009] The straight tube heat transfer section includes a straight tube smoke pipe, and a first heat pipe is sheathed outside the straight tube smoke pipe; the spiral tube heat transfer section includes a spiral smoke pipe, and a second heat pipe is sheathed outside the spiral smoke pipe;

[0010] The plurality of straight smoke pipes and the plurality of spiral smoke pipes are alternately connected and communicated with each other in sequence, and the adjacent first heat pipes and the second heat pipes are communicated with each other.

[0011] Through the above technical scheme, the present invention provides a split heat pipe waste heat boiler in which straight tube heat transfer sections and spiral tube heat transfer sections are alternately combined. The straight tube heat transfer sections can increase the flow velocity of the flue gas, and the spiral tube heat transfer sections can reduce the flow velocity of the flue gas. By controlling the velocity of the flue gas, its thermal efficiency is improved. At the same time, the straight tube heat transfer sections and the spiral tube heat transfer sections are designed in a split type, which is more convenient for assembly and connection.

[0012] Preferably, in the above-mentioned split-type glass fiber kiln heat pipe waste heat boiler, both ends of the straight tube type smoke pipe and the spiral type smoke pipe are provided with flanges for connection.

[0013] Preferably, in the above-mentioned split-type glass fiber kiln heat pipe waste heat boiler, the outer side wall of the straight tube type smoke pipe has radially protruding smoke pipe fins, and the inner wall of the first heat pipe is formed with a heat pipe slot that is inserted into the smoke pipe fins.

[0014] Preferably, in the above-mentioned split-type glass fiber kiln heat pipe waste heat boiler, each of the first heat pipes is composed of two semi-cylindrical shells connected together, and the semi-cylindrical shells have a cavity for passing heat-conducting liquid.

[0015] Preferably, in the above-mentioned split-type glass fiber kiln heat pipe waste heat boiler, a plug-in portion is provided between the outer side walls of the two semi-cylindrical shells of each of the first heat pipes, and the plug-in portions are fastened and connected by bolts.

[0016] Preferably, in the above-mentioned split-type glass fiber kiln heat pipe waste heat boiler, the outer side walls of the first heat pipe and the second heat pipe both have heat pipe fins.

[0017] Preferably, in the above-mentioned split-type glass fiber kiln heat pipe waste heat boiler, there are respectively a plug and a socket between the ends of the adjacent first heat pipe and the second heat pipe, and the plug-in seal is provided at the connection between the plug and the socket.

[0018] Preferably, in the above-mentioned split-type glass fiber kiln heat pipe waste heat boiler, it also includes an arc-shaped smoke pipe, and the arc-shaped smoke pipe is used to change the arrangement direction of the straight smoke pipe and the spiral smoke pipe to form a serpentine pipeline.

[0019] Preferably, in the above-mentioned split-type glass fiber kiln heat pipe waste heat boiler, both ends of the series pipeline composed of multiple first heat pipes and second heat pipes respectively pass through the side walls of the boiler water tank, and one end is the heat transfer liquid supply inlet and the other end is the heat transfer liquid discharge outlet.

[0020] Preferably, in the above-mentioned split-type glass fiber kiln heat pipe waste heat boiler, a pressure relief valve is installed on the heat transfer liquid discharge outlet.

[0021] It can be seen from the above technical solution that, compared with the prior art, the present invention discloses a split-type glass fiber kiln heat pipe waste heat boiler, which has the following beneficial effects:

[0022] 1. The present invention provides a split heat pipe waste heat boiler in which a straight tube heat transfer section and a spiral tube heat transfer section are alternately combined. The straight tube heat transfer section can increase the flow velocity of the flue gas, and the spiral tube heat transfer section can reduce the flow velocity of the flue gas. By controlling the velocity of the flue gas, its thermal efficiency is improved. At the same time, the straight tube heat transfer section and the spiral tube heat transfer section are designed in a split type, which is more convenient for assembly and connection.

[0023] 2. The present invention can improve the heat exchange efficiency between the flue gas in the straight tube smoke tube and the fluid in the first heat pipe by adding fins on the outside of the straight tube smoke tube, and can improve the heat exchange efficiency between the fluid in the heat pipe and the water in the boiler water tank by adding fins on the outside of the first heat pipe and the second heat pipe.

[0024] 3. The present invention improves the heat exchange efficiency by designing the plug-in structure of the smoke tube fins and the heat pipe slots, while also ensuring the stability of the connection structure and preventing displacement in the axial direction.

[0025] 4. The split structures provided by the present invention are connected by flanges, which can ensure structural stability and facilitate disassembly, maintenance and replacement. Different combinations can also be switched according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 The accompanying drawing is a schematic structural diagram of a split-type glass fiber kiln heat pipe waste heat boiler (without the front panel) provided by the present invention;

[0028] Figure 2 The accompanying drawing is a schematic diagram of a partial structure of a heat pipe heat transfer pipeline provided by the present invention;

[0029] Figure 3 The accompanying drawings are schematic diagrams of the structures of the straight tube heat transfer section and the spiral tube heat transfer section provided by the present invention;

[0030] Figure 4 The accompanying drawing is a schematic diagram of the structural decomposition of the straight tube heat transfer section provided by the present invention;

[0031] Figure 5 The accompanying drawing is a schematic structural diagram of a semi-cylindrical shell provided by the present invention;

[0032] Figure 6 The accompanying drawing is a schematic structural diagram of a spiral tube heat transfer section provided by the present invention;

[0033] Figure 7 The accompanying drawing is a schematic diagram of the structural decomposition of the spiral tube heat transfer section provided by the present invention;

[0034] Figure 8 The accompanying drawing is a structural exploded view of the arc-shaped smoke pipe provided by the present invention.

[0035] in:

[0036] 1- Boiler water tank;

[0037] 2-heat pipe heat transfer pipeline;

[0038] 21-straight tube heat transfer section; 211-straight tube smoke pipe; 2111-smoke pipe fin; 2112-limiting fin; 212-first heat pipe; 2121-heat pipe slot; 2122-semi-cylindrical shell; 2123-plug-in portion; 21231-double-piece ear plate; 21232-single-piece ear plate; 21233-bolt; 22-spiral tube heat transfer section; 221-spiral smoke pipe; 222-second heat pipe; 23-flange; 24-heat pipe fin; 25-insert pipe; 26-socket; 27-arc-shaped smoke pipe; 28-arc-shaped heat pipe. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1:

[0041] See attached Figure 1 To Attachment Figure 2 The embodiment of the present invention discloses a split type heat pipe waste heat boiler for a glass fiber kiln, comprising a boiler water tank 1, a heat pipe heat transfer pipeline 2 is arranged in the boiler water tank 1, and the heat pipe heat transfer pipeline 2 is coiled inside the boiler water tank 1; the heat pipe heat transfer pipeline 2 is composed of a plurality of straight pipe heat transfer sections 21 and spiral pipe heat transfer sections 22 alternately connected in series;

[0042] The straight tube heat transfer section 21 includes a straight tube smoke pipe 211, and a first heat pipe 212 is sheathed outside the straight tube smoke pipe 211; the spiral tube heat transfer section 22 includes a spiral tube smoke pipe 221, and a second heat pipe 222 is sheathed outside the spiral tube smoke pipe 221;

[0043] The plurality of straight smoke pipes 211 and the plurality of spiral smoke pipes 221 are alternately connected and communicated with each other in sequence, and the adjacent first heat pipes 212 and second heat pipes 222 are communicated with each other.

[0044] In order to further optimize the above technical solution, both ends of the straight smoke pipe 211 and the spiral smoke pipe 221 are provided with flanges 23 for connection.

[0045] See attached Figure 3 To Attachment Figure 5 The outer wall of the straight tube smoke pipe 211 has a radially protruding smoke pipe fin 2111 , and the inner wall of the first heat pipe 212 is formed with a heat pipe slot 2121 that is inserted into the smoke pipe fin 2111 .

[0046] In order to further optimize the above technical solution, each first heat pipe 212 is composed of two semi-cylindrical shells 2122 connected together, and each semi-cylindrical shell 2122 has a cavity for passing a heat-conducting liquid.

[0047] In order to further optimize the above technical solution, a plug-in portion 2123 is provided between the outer side walls of the two semi-cylindrical shells 2122 of each first heat pipe 212 , and the plug-in portions 2123 are fastened and connected by bolts 21233 .

[0048] See attached Figure 6 and attached Figure 7 The outer side walls of the first heat pipe 212 and the second heat pipe 222 both have heat pipe fins 24 .

[0049] In order to further optimize the above technical solution, an insert 25 and a socket 26 are respectively provided between the ends of the adjacent first heat pipe 212 and the second heat pipe 222, and a plug seal is provided at the plug-in connection of the insert 25 and the socket 26.

[0050] In this embodiment, the design of the insert 25 and the socket 26 enables all the heat pipes to be connected in series, and due to the design of the smoke pipe fin 2111 and the heat pipe slot 2121, no other fixed connection is required, and no axial movement will occur between the two heat pipes, so the insert 25 and the socket 26 will not detach after being plugged in.

[0051] Furthermore, in order to prevent the heat pipe from rotating and causing hard damage to the insert 25 and the socket 26, two limiting fins 2112 are axially provided on the outer wall of the straight tube type smoke pipe 211. After the two semi-cylindrical shells 2122 are connected, the two limiting fins 2112 are sandwiched in the middle, so that the two semi-cylindrical shells 2122 cannot rotate.

[0052] In this embodiment, the plug-in portion 2123 includes a double-piece ear plate 21231 and a single-piece ear plate 21232 respectively fixed on the two semi-cylindrical shells 2122. After the double-piece ear plate 21231 and the single-piece ear plate 21232 are plugged in, they are fastened together by bolts 21233.

[0053] Embodiment 2:

[0054] In the above embodiment 1, the straight smoke pipe 211 and the spiral smoke pipe 221 are connected to form a linear structure. In this embodiment, the pipeline composed of the straight smoke pipe 211 and the spiral smoke pipe 221 is arranged in a serpentine shape inside the boiler water tank 1.

[0055] See attached Figure 8 , and also includes an arc-shaped smoke pipe 27, which is used to change the arrangement direction of the straight smoke pipe 211 and the spiral smoke pipe 221 to form a serpentine pipeline.

[0056] In this embodiment, an arc-shaped heat pipe 28 is also included. The arc-shaped heat pipe 28 is an arc-shaped semicircular shell with a cavity inside, and is also connected by plugging the insert 25 and the socket 26. In order to improve the stability of the arc-shaped heat pipe 28, the arc-shaped heat pipe 28 can be tied to the arc-shaped smoke pipe 27.

[0057] In order to further optimize the above technical solution, both ends of the series pipeline composed of multiple first heat pipes 212 and second heat pipes 222 pass through the side wall of the boiler water tank 1 respectively, and one end is the heat transfer liquid supply inlet and the other end is the heat transfer liquid discharge outlet.

[0058] In order to further optimize the above technical solution, a pressure relief valve is installed on the heat transfer liquid discharge outlet.

[0059] In this embodiment, the straight tube smoke pipe 211 and the spiral smoke pipe 221 are arranged alternately and in combination with the arc-shaped smoke pipe 27 to form a serpentine coiled structure. The straight tube heat transfer section 21 can increase the flow velocity of the smoke, and the spiral tube heat transfer section 22 can reduce the flow velocity of the smoke. By controlling the velocity of the smoke, its thermal efficiency is improved.

[0060] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0061] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A split-type glass fiber kiln heat pipe waste heat boiler, comprising a boiler water tank (1), wherein a heat pipe heat transfer pipeline (2) is arranged in the boiler water tank (1), and the heat pipe heat transfer pipeline (2) is coiled inside the boiler water tank (1); characterized in that: The heat pipe heat transfer pipeline (2) is composed of a plurality of straight pipe heat transfer sections (21) and spiral pipe heat transfer sections (22) alternately connected in series; The straight tube heat transfer section (21) comprises a straight tube smoke pipe (211), and a first heat pipe (212) is sheathed on the outside of the straight tube smoke pipe (211); the spiral tube heat transfer section (22) comprises a spiral tube smoke pipe (221), and a second heat pipe (222) is sheathed on the outside of the spiral tube smoke pipe (221); The plurality of straight smoke pipes (211) and the plurality of spiral smoke pipes (221) are alternately connected and sequentially communicated, and the adjacent first heat pipes (212) and second heat pipes (222) are communicated with each other.

2. A split type glass fiber kiln heat pipe waste heat boiler according to claim 1, characterized in that: Both ends of the straight smoke pipe (211) and the spiral smoke pipe (221) are provided with flanges (23) for connection.

3. The split type heat pipe waste heat boiler for glass fiber kiln according to claim 1, characterized in that: The outer side wall of the straight tube type smoke pipe (211) has a radially protruding smoke pipe fin (2111), and the inner wall of the first heat pipe (212) is formed with a heat pipe slot (2121) which is inserted into the smoke pipe fin (2111).

4. The split type heat pipe waste heat boiler for glass fiber kiln according to claim 1, characterized in that: Each of the first heat pipes (212) is composed of two butt-jointed semi-cylindrical shells (2122), and each of the semi-cylindrical shells (2122) has a cavity for introducing a heat-conducting liquid.

5. A split type heat pipe waste heat boiler for a glass fiber kiln according to claim 4, characterized in that: A plug-in portion (2123) is provided between the outer side walls of the two semi-cylindrical shells (2122) of each of the first heat pipes (212), and the plug-in portions (2123) are fastened and connected by bolts (21233).

6. The split type glass fiber kiln heat pipe waste heat boiler according to claim 1, characterized in that: The outer side walls of the first heat pipe (212) and the second heat pipe (222) are both provided with heat pipe fins (24).

7. The split type heat pipe waste heat boiler for glass fiber kiln according to claim 1, characterized in that: An insert tube (25) and a socket (26) are respectively provided between the ends of the adjacent first heat pipe (212) and the second heat pipe (222), and a plug-in seal is provided at the plug-in connection between the insert tube (25) and the socket (26).

8. The split type heat pipe waste heat boiler for glass fiber kiln according to claim 1, characterized in that: It also includes an arc-shaped smoke pipe (27), wherein the arc-shaped smoke pipe (27) is used to change the arrangement direction of the straight smoke pipe (211) and the spiral smoke pipe (221) so as to form a serpentine pipeline.

9. A split type heat pipe waste heat boiler for a glass fiber kiln according to claim 8, characterized in that: Both ends of the series pipeline composed of a plurality of the first heat pipes (212) and the second heat pipes (222) respectively pass through the side wall of the boiler water tank (1), and one end is a heat transfer liquid supply inlet and the other end is a heat transfer liquid discharge outlet.

10. A split type heat pipe waste heat boiler for a glass fiber kiln according to claim 9, characterized in that: A pressure relief valve is installed on the heat-conducting liquid discharge port.

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