Engine exhaust heat recovery device for single screw expander

Abstract

This utility model relates to the field of waste heat recovery technology, specifically to a waste heat recovery device for engine exhaust of a single-screw expander, comprising a heating component, a shell component, a heat insulation component, an exhaust component, and a heat insulation sleeve. The exhaust component is located outside the heating component, and the heat insulation component and the exhaust component are located outside the heat insulation component and the heat insulation sleeve. The shell component is located outside the heat insulation component and the heat insulation sleeve. The heating component consists of a heating tank, a first upper cover, a liquid inlet, and a liquid outlet. The shell component consists of a shell, a second upper cover, and a connecting pipe, with the second upper cover connected to the upper end of the shell. Connecting pipes are connected to the upper and lower parts of one side of the shell. The heat insulation component consists of multiple sets of spliced ​​sleeves, with multiple sets of limiting grooves inside each spliced ​​sleeve. The exhaust component consists of an inlet pipe, a spiral pipe, and an outlet pipe, with an inlet pipe connected to the upper part of the spiral pipe and an outlet pipe connected to the lower part of the spiral pipe.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, specifically to a waste heat recovery device for engine exhaust of a single screw expander. Background Technology

[0002] The exhaust waste heat of a single-screw expander is prone to heat loss during the recovery process, resulting in less recoverable heat. The gas flow rate affects the heating efficiency during heat recovery, and the efficiency of a single tube during heat exchange is limited.

[0003] Therefore, it is necessary to design an engine exhaust waste heat recovery device for a single-screw expander to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the prior art by proposing an engine exhaust waste heat recovery device for a single screw expander.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A waste heat recovery device for engine exhaust of a single screw expander includes a heating component, a shell component, a heat insulation component, an exhaust component, and a heat insulation sleeve. The exhaust component is provided outside the heating component, and the heat insulation component and the exhaust component are provided outside the heat insulation component and the heat insulation sleeve. The shell component is provided outside the heat insulation component and the heat insulation sleeve.

[0007] The heating assembly consists of a heating tank, a first top cover, a liquid inlet, and a liquid outlet. The heating tank is connected to the top of the first top cover, the top of the first top cover has a liquid inlet at the middle of its upper end, and the heating tank has a liquid outlet at the middle of its lower end.

[0008] The outer casing assembly consists of an outer casing, a second upper cover, and a connecting pipe. The upper end of the outer casing is connected to the second upper cover, and the upper and lower parts of one side of the outer casing are both connected to the connecting pipe.

[0009] The thermal insulation component is composed of multiple sets of splicing sleeves, and the splicing sleeves are provided with multiple sets of limiting grooves.

[0010] The exhaust assembly consists of an intake pipe, a spiral pipe, and an exhaust pipe, with the intake pipe connected to the upper part of the spiral pipe and the exhaust pipe connected to the lower part of the spiral pipe.

[0011] As a preferred embodiment of this utility model, the heating tank and the first upper cover are connected by bolts.

[0012] In a preferred embodiment of this utility model, the outer shell, the second upper cover, and the connecting pipe are all connected by bolts.

[0013] As a preferred embodiment of this utility model, the splicing sleeve is connected by an internal limiting groove and a spiral tube sleeve.

[0014] In a preferred embodiment of this invention, the spiral tube is connected to the outlet tube and the inlet tube via flanges.

[0015] As a preferred embodiment of this utility model, the air outlet pipe, air inlet pipe, and insulation sleeve are connected by a sleeve connection.

[0016] In a preferred embodiment of this utility model, the insulation sleeve and the connecting pipe are connected by a sleeve connection.

[0017] In summary, the technical effects and advantages of this utility model are as follows: The exhaust waste heat recovery device of this single-screw expander is a combined structure formed by connecting the spiral tube, the outlet pipe, and the inlet pipe through flanges. The multiple sets of outlet pipes and inlet pipes can increase the intake and exhaust volume, and the spiral tube can increase the heat exchange area, thereby improving the heat exchange efficiency. The insulation components and insulation sleeves installed on the outside of the exhaust assembly can reduce heat loss. The combined insulation components and insulation sleeves are easier to disassemble and assemble. The outer shell assembly provides further protection to the overall device, which can further reduce heat loss. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 This is a structural diagram of the second upper cover of this utility model when opened;

[0020] Figure 3 This is a structural diagram of the thermal insulation component of this utility model;

[0021] Figure 4 This is a structural diagram of the heating component of this utility model.

[0022] In the diagram: 1. Heating assembly; 101. Heating tank; 102. First top cover; 103. Liquid inlet; 104. Liquid outlet; 2. Outer shell assembly; 201. Outer shell; 202. Second top cover; 203. Connecting pipe; 3. Insulation assembly; 301. Splicing sleeve; 302. Limiting groove; 4. Exhaust assembly; 401. Air inlet pipe; 402. Spiral pipe; 403. Air outlet pipe; 5. Insulation sleeve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-4A waste heat recovery device for engine exhaust of a single-screw expander includes a heating assembly 1, a shell assembly 2, an insulation assembly 3, an exhaust assembly 4, and an insulation sleeve 5. The exhaust assembly 4 is located outside the heating assembly 1, and the insulation assembly 3 and insulation sleeve 5 are located outside the heating assembly 1 and the exhaust assembly 4, respectively. The shell assembly 2 is located outside the insulation assembly 3 and insulation sleeve 5. The heating assembly 1 consists of a heating tank 101, a first upper cover 102, a liquid inlet 103, and a liquid outlet 104. The upper end of the heating tank 101 is connected to the first upper cover 102, and the liquid inlet 103 is located at the middle of the upper end of the first upper cover 102. The hot tank 101 has a liquid outlet 104 at the middle of its lower end; the outer shell assembly 2 consists of an outer shell 201, a second upper cover 202 and a connecting pipe 203, and the upper end of the outer shell 201 is connected to the second upper cover 202, and the upper and lower parts of one side of the outer shell 201 are connected to the connecting pipe 203; the heat preservation assembly 3 consists of multiple sets of splicing sleeves 301, and multiple sets of limiting grooves 302 are provided in the splicing sleeves 301; the exhaust assembly 4 consists of an air inlet pipe 401, a spiral pipe 402 and an air outlet pipe 403, and the upper part of the spiral pipe 402 is connected to the air inlet pipe 401, and the lower part of the spiral pipe 402 is connected to the air outlet pipe 403.

[0025] Reference Figures 1-4 The exhaust waste heat of the single screw expander engine is prone to heat loss during the recovery process, and the amount of heat that can be recovered is relatively small. The heating tank 101 and the first upper cover 102 are connected by bolts. The outer shell 201, the second upper cover 202, and the connecting pipe 203 are all connected by bolts. The splicing sleeve 301 is connected to the spiral tube 402 through the internal limiting groove 302. The exhaust pipe 403, the intake pipe 401, and the insulation sleeve 5 are connected by a sleeve. The insulation sleeve 5 and the connecting pipe 203 are connected by a sleeve. The insulation component 3 and the insulation sleeve 5 are set on the outside of the exhaust component 4 to reduce heat loss. Moreover, the combined insulation component 3 and the insulation sleeve 5 are easier to disassemble and assemble. The outer shell component 2 provides further protection on the outside of the overall device, which can further reduce heat loss.

[0026] Reference Figures 1-4 During heat recovery, the gas flow rate affects the heating efficiency, and the efficiency of a single tube during heat exchange is limited. The spiral tube 402, the outlet pipe 403, and the inlet pipe 401 are connected by flanges to form a combined structure. The multiple sets of outlet pipes 403 and inlet pipes 401 can increase the intake and exhaust volume, and the spiral tube 402 can increase the heat exchange area, thereby improving the heat exchange efficiency.

[0027] Working principle: The spiral tube 402, outlet pipe 403, and inlet pipe 401 of the engine exhaust waste heat recovery device of the single screw expander are connected by flanges to form a combined structure. The multiple sets of outlet pipes 403 and inlet pipes 401 can increase the intake and exhaust volume, and the spiral tube 402 can increase the heat exchange area, thereby improving the heat exchange efficiency. The heating tank 101 and the first upper cover 102 are connected by bolts, and the outer shell 201, the second upper cover 202, and the connecting pipe 203 are all connected by bolts. The splicing sleeve 301 is connected by the internal limiting groove 302 and the spiral tube 402. The exhaust pipe 403, the intake pipe 401 and the insulation sleeve 5 are connected by a sleeve. The insulation sleeve 5 and the connecting pipe 203 are connected by a sleeve. The insulation component 3 and the insulation sleeve 5 are set on the outside of the exhaust component 4, which can reduce heat loss. The combined insulation component 3 and the insulation sleeve 5 are more convenient to disassemble and assemble. The outer shell component 2 forms further protection on the outside of the whole device, which can further reduce heat loss.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An engine exhaust waste heat recovery device of a single-screw expander, comprising a heating assembly (1), a shell assembly (2), an insulation assembly (3), an exhaust assembly (4) and an insulation cover (5), characterized in that: The heating component (1) is provided with an exhaust component (4) on the outside, and the heating component (1) and the exhaust component (4) are provided with a heat preservation component (3) and a heat preservation sleeve (5) on the outside, and the heat preservation component (3) and the heat preservation sleeve (5) are provided with an outer shell component (2). The heating assembly (1) consists of a heating tank (101), a first upper cover (102), a liquid inlet (103), and a liquid outlet (104). The upper end of the heating tank (101) is connected to the first upper cover (102), the liquid inlet (103) is provided at the middle of the upper end of the first upper cover (102), and the liquid outlet (104) is provided at the middle of the lower end of the heating tank (101). The outer shell assembly (2) consists of an outer shell (201), a second upper cover (202) and a connecting pipe (203), and the upper end of the outer shell (201) is connected to the second upper cover (202), and the upper and lower parts of one side of the outer shell (201) are both connected to the connecting pipe (203); The thermal insulation component (3) is composed of multiple sets of splicing sleeves (301), and the splicing sleeves (301) are provided with multiple sets of limiting grooves (302); The exhaust assembly (4) consists of an intake pipe (401), a spiral pipe (402) and an exhaust pipe (403), with the intake pipe (401) connected to the upper part of the spiral pipe (402) and the exhaust pipe (403) connected to the lower part of the spiral pipe (402).

2. A single screw expander engine exhaust heat recovery device according to claim 1, characterized in that: The heating tank (101) and the first upper cover (102) are connected by bolts.

3. The engine exhaust waste heat recovery device for a single-screw expander according to claim 1, characterized in that: The outer shell (201), the second upper cover (202), and the connecting pipe (203) are all connected by bolts.

4. A single screw expander engine exhaust heat recovery device according to claim 1, characterized in that: The splicing sleeve (301) is connected by an internal limiting groove (302) and a spiral tube (402).

5. A single screw expander engine exhaust heat recovery device according to claim 1, characterized in that: The spiral tube (402), the outlet pipe (403), and the inlet pipe (401) are connected by flanges.

6. A single screw expander engine exhaust heat recovery device according to claim 1, characterized in that: The air outlet pipe (403), air inlet pipe (401), and insulation sleeve (5) are connected by a sleeve connection.

7. A single screw expander engine exhaust heat recovery device according to claim 1, characterized in that: The insulation sleeve (5) and the connecting pipe (203) are connected by a sleeve.

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