Combined type heat pipe waste heat boiler of glass chemical fiber kiln

Abstract

The invention discloses a glass chemical fiber kiln combined type heat pipe waste heat boiler, and relates to the technical field of waste heat boilers, the glass chemical fiber kiln combined type heat pipe waste heat boiler comprises a boiler water tank, a heat pipe heat transfer part is arranged in the boiler water tank, and the heat pipe heat transfer part comprises a smoke pipe and a heat pipe; the two ends of the smoke pipe penetrate out of the side wall of the boiler water tank correspondingly and are used for smoke entering and discharging correspondingly, and the smoke pipe is wound in the boiler water tank. The number of the heat pipes is multiple, the multiple heat pipes are detachably connected to the outer side of the smoke pipe, every two adjacent heat pipes communicate with each other, heat conduction liquid is introduced into the heat pipes, and the heat conduction liquid is used for conducting heat exchange on smoke introduced into the smoke pipe and then transferring the smoke to water in a boiler water tank. According to the novel waste heat boiler combining the smoke pipe and the heat pipe, the heat pipe is detachably connected to the outer side of the smoke pipe and is divided into multiple sections, the heat pipe can be rapidly assembled and replaced, and when the heat efficiency is insufficient, rapid maintenance and replacement operation can be achieved by detecting the performance effect of the structure of each part.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat boilers, and more particularly to a combined 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 smoke 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 specific combination of the gas pipe and the heat transfer pipe is not disclosed, and the structural design here has a key influence on its effect.

[0005] Therefore, how to provide a combined heat pipe waste heat boiler for a glass fiber kiln that is easy to disassemble and assemble and has high heat transfer 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 glass fiber kiln combined 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 combined heat pipe waste heat boiler for a glass fiber kiln comprises a boiler water tank, a heat pipe heat transfer part is arranged in the boiler water tank, and the heat pipe heat transfer part comprises:

[0009] A smoke pipe, both ends of which pass through the side walls of the boiler water tank and are used for smoke to enter and exhaust, respectively, and the smoke pipe is coiled inside the boiler water tank;

[0010] The heat pipes are multiple in number, and the multiple heat pipes are detachably connected to the outside of the smoke pipe. Adjacent heat pipes are interconnected, and heat-conducting liquid is passed through the heat pipes. The heat-conducting liquid is used to transfer the flue gas passed through the smoke pipe to the water in the boiler water tank after heat exchange.

[0011] Through the above technical scheme, the present invention provides a new waste heat boiler combining a smoke pipe and a heat pipe. The heat pipe is detachably connected to the outside of the smoke pipe and is divided into multiple sections, which can meet the needs of rapid assembly and replacement of the heat pipe. When the thermal efficiency is insufficient, rapid maintenance and replacement operations can be achieved by detecting the performance effects of each part of the structure.

[0012] Preferably, in the above-mentioned glass fiber kiln combined heat pipe waste heat boiler, the outer side wall of the smoke pipe has radially protruding smoke pipe fins, and the inner wall of the heat pipe is formed with a heat pipe slot that is inserted into the smoke pipe fins.

[0013] Preferably, in the above-mentioned glass fiber kiln combined heat pipe waste heat boiler, the outer side wall of the heat pipe has heat pipe fins.

[0014] Preferably, in the above-mentioned glass fiber kiln combined heat pipe waste heat boiler, there are respectively a plug-in pipe and a socket between the ends of adjacent heat pipes, and the plug-in seal is provided at the joint between the plug-in pipe and the socket.

[0015] Preferably, in the above-mentioned combined heat pipe waste heat boiler for a glass fiber kiln, each of the heat pipes is composed of two butt-jointed semi-cylindrical shells, and each of the semi-cylindrical shells has a cavity for introducing a heat-conducting liquid.

[0016] Preferably, in the above-mentioned glass fiber kiln combined 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 heat pipes, and the plug-in portions are fastened and connected by bolts.

[0017] Preferably, in the above-mentioned glass fiber kiln combined heat pipe waste heat boiler, the smoke pipe is arranged in a serpentine shape inside the boiler water tank, and the smoke pipe has a smoke pipe straight section and a smoke pipe arc section.

[0018] Preferably, in the above-mentioned combined heat pipe waste heat boiler for a glass fiber kiln, the heat pipe comprises a straight heat pipe connected to the straight section of the smoke pipe, and an arc-shaped heat pipe connected to the arc section of the smoke pipe.

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

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

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

[0022] 1. The present invention provides a new waste heat boiler which is a combination of a smoke pipe and a heat pipe. The heat pipe is detachably connected to the outside of the smoke pipe and is divided into multiple sections, which can meet the requirements of rapid assembly and replacement of the heat pipe. When the thermal efficiency is insufficient, rapid maintenance and replacement operations can be achieved by detecting the performance effects of each part of the structure.

[0023] 2. The present invention can improve the heat exchange efficiency between the flue gas in the smoke pipe and the fluid in the heat pipe by adding fins on the outside of the smoke pipe, 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 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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.

[0026] Figure 1 The accompanying drawing is a schematic structural diagram of a combined heat pipe waste heat boiler for a glass fiber kiln provided by the present invention (without the front panel);

[0027] Figure 2 The accompanying drawing is a schematic diagram of a partial structure of a heat transfer portion of a heat pipe provided by the present invention;

[0028] Figure 3 The accompanying drawing is a schematic diagram of the exploded structure of the smoke pipe straight section of the heat transfer portion of the heat pipe provided by the present invention;

[0029] Figure 4 The accompanying drawing is a schematic diagram of the exploded structure of the heat pipe provided by the present invention;

[0030] Figure 5 The accompanying drawing is a schematic diagram of the exploded structure of the arc-shaped section of the smoke pipe of the heat transfer part of the heat pipe provided by the present invention;

[0031] Figure 6 The accompanying drawing is a schematic structural diagram of a semi-cylindrical shell in a linear heat pipe provided by the present invention;

[0032] Figure 7 The accompanying drawing is a schematic structural diagram of the arc-shaped heat pipe provided by the present invention.

[0033] in:

[0034] 1- Boiler water tank;

[0035] 2-heat pipe heat transfer part;

[0036] 21-smoke pipe; 211-smoke pipe fin; 212-smoke pipe straight section; 213-smoke pipe arc section; 214-limiting fin; 22-heat pipe; 221-heat pipe slot; 222-heat pipe fin; 223-insert pipe; 224-socket; 225-semi-cylindrical shell; 226-plug-in part; 2261-double-piece ear plate; 2262-single-piece ear plate; 2263-bolt; 227-straight heat pipe; 228-arc heat pipe. DETAILED DESCRIPTION

[0037] 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.

[0038] Embodiment 1:

[0039] See attached Figure 1 To Attachment Figure 2 The embodiment of the present invention discloses a combined heat pipe waste heat boiler for a glass fiber kiln, comprising a boiler water tank 1, a heat pipe heat transfer part 2 is arranged in the boiler water tank 1, and the heat pipe heat transfer part 2 comprises:

[0040] A smoke pipe 21, both ends of which pass through the side wall of the boiler water tank 1 and are used for smoke to enter and exhaust, respectively. The smoke pipe 21 is coiled inside the boiler water tank 1;

[0041] The heat pipe 22, there are multiple heat pipes 22, and the multiple heat pipes 22 can be detachably connected to the outside of the smoke pipe 21. Adjacent heat pipes 22 are interconnected. A heat-conducting liquid is passed into the heat pipe 22. The heat-conducting liquid is used to transfer the flue gas passed into the smoke pipe 21 to the water in the boiler water tank 1 after heat exchange.

[0042] See attached Figure 3 The outer wall of the smoke tube 21 has a radially protruding smoke tube fin 211 , and the inner wall of the heat pipe 22 is formed with a heat pipe slot 221 that is inserted into the smoke tube fin 211 .

[0043] In order to further optimize the above technical solution, the outer wall of the heat pipe 22 has a heat pipe fin 222 .

[0044] In order to further optimize the above technical solution, an insert 223 and a socket 224 are respectively provided between the ends of adjacent heat pipes 22, and a plug seal is provided at the plug-in connection of the insert 223 and the socket 224.

[0045] In this embodiment, the design of the insert 223 and the socket 224 enables all the heat pipes 22 to be connected in series, and due to the design of the smoke pipe fin 211 and the heat pipe slot 221, no other fixed connection is required, and no axial movement will occur between the two heat pipes 22, so the insert 223 and the socket 224 will not detach after being plugged in.

[0046] See attached Figure 4 and attached Figure 6 Each heat pipe 22 is composed of two semi-cylindrical shells 225 connected together, and each semi-cylindrical shell 225 has a cavity for passing heat-conducting liquid.

[0047] Furthermore, in order to prevent the heat pipe 22 from rotating and causing hard damage to the insert 223 and the socket 224, two limiting fins 214 are axially provided on the outer wall of the smoke pipe 21. After the two semi-cylindrical shells 225 are connected, the two limiting fins 214 are sandwiched in the middle, so that the two semi-cylindrical shells 225 cannot rotate.

[0048] In order to further optimize the above technical solution, a plug-in portion 226 is provided between the outer side walls of the two semi-cylindrical shells 225 of each heat pipe 22 , and the plug-in portions 226 are fastened and connected by bolts 2263 .

[0049] In this embodiment, the plug-in portion 226 includes a double-piece ear plate 2261 and a single-piece ear plate 2262 respectively fixed on two semi-cylindrical shells 225 . After the double-piece ear plate 2261 and the single-piece ear plate 2262 are plugged in, they are fastened together by bolts 2263 .

[0050] Embodiment 2:

[0051] In the above embodiment 1, it is assumed that the smoke pipe 21 is a straight pipe. In this embodiment, the smoke pipe 21 is arranged in a serpentine shape inside the boiler water tank 1, and the smoke pipe 21 has a smoke pipe straight section 212 and a smoke pipe arc section 213.

[0052] In this embodiment, the heat pipe 22 includes a straight heat pipe 227 connected to the smoke pipe straight section 212 and an arc-shaped heat pipe 228 connected to the smoke pipe arc section 213 .

[0053] It should be noted that the straight heat pipe 227 refers to the structure in Example 1, and the curved heat pipe 228 refers to the structure in the attached Figure 5 and attached Figure 7 The structure shown.

[0054] The arc-shaped heat pipe 228 is an arc-shaped semicircular shell with a cavity inside, and is also connected by plugging the insert 223 and the socket 224. In order to improve the stability of the arc-shaped heat pipe 228, the arc-shaped heat pipe 228 can be tied to the arc-shaped section 213 of the smoke pipe.

[0055] In order to further optimize the above technical solution, both ends of the series pipeline composed of multiple heat pipes 22 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.

[0056] In order to further optimize the above technical solution, a pressure relief valve is installed on the heat transfer liquid discharge outlet.

[0057] 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.

[0058] 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 combined heat pipe waste heat boiler for a glass fiber kiln, comprising a boiler water tank (1), wherein a heat pipe heat transfer part (2) is arranged in the boiler water tank (1), characterized in that: The heat pipe heat transfer part (2) comprises: a smoke pipe (21), the two ends of the smoke pipe (21) respectively passing through the side wall of the boiler water tank (1) and respectively used for smoke to enter and to be discharged, and the smoke pipe (21) is coiled and arranged inside the boiler water tank (1); A heat pipe (22), wherein the number of the heat pipes (22) is plural, and the plurality of heat pipes (22) are all detachably connected to the outside of the smoke pipe (21), and adjacent heat pipes (22) are interconnected, and a heat-conducting liquid is passed into the heat pipe (22), and the heat-conducting liquid is used to transfer the flue gas passed into the smoke pipe (21) to the water in the boiler water tank (1) after heat exchange.

2. A combined heat pipe waste heat boiler for a glass fiber kiln according to claim 1, characterized in that: The outer wall of the smoke tube (21) is provided with a radially protruding smoke tube fin (211), and the inner wall of the heat pipe (22) is provided with a heat pipe slot (221) inserted into the smoke tube fin (211).

3. The glass fiber kiln combined heat pipe waste heat boiler according to claim 1, characterized in that: The outer side wall of the heat pipe (22) is provided with a heat pipe fin (222).

4. The glass fiber kiln combined heat pipe waste heat boiler according to claim 1, characterized in that: An insert tube (223) and a socket (224) are respectively provided between the ends of adjacent heat pipes (22), and a plug-in seal is provided at the plug-in connection between the insert tube (223) and the socket (224).

5. The glass fiber kiln combined heat pipe waste heat boiler according to claim 1, characterized in that: Each of the heat pipes (22) is composed of two butt-jointed semi-cylindrical shells (225), and each of the semi-cylindrical shells (225) has a cavity for introducing a heat-conducting liquid.

6. The glass fiber kiln combined heat pipe waste heat boiler according to claim 5, characterized in that: An inserting portion (226) is provided between the outer side walls of the two semi-cylindrical shells (225) of each heat pipe (22), and the inserting portions (226) are fastened and connected by bolts (2263).

7. The glass fiber kiln combined heat pipe waste heat boiler according to claim 1, characterized in that: The smoke pipe (21) is arranged in a serpentine shape inside the boiler water tank (1), and the smoke pipe (21) has a smoke pipe straight section (212) and a smoke pipe arc section (213).

8. The glass fiber kiln combined heat pipe waste heat boiler according to claim 7, characterized in that: The heat pipe (22) comprises a straight heat pipe (227) connected to the smoke pipe straight section (212), and an arc-shaped heat pipe (228) connected to the smoke pipe arc section (213).

9. The glass fiber kiln combined heat pipe waste heat boiler according to claim 1, characterized in that: Both ends of the series pipeline composed of a plurality of the heat pipes (22) 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 combined 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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