A shaft seal heat exchanger condensate recovery device

By designing a condensate recovery device for shaft seal heat exchangers, utilizing a negative pressure condensate recovery structure and quick-release conveying pipeline components, the problem of direct discharge of high-quality condensate was solved, achieving efficient resource recovery and cost reduction.

CN224580763UActive Publication Date: 2026-07-31WUAN YUHUA IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUAN YUHUA IRON & STEEL CO LTD
Filing Date
2025-04-11
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing shaft seal heat exchangers discharge high-quality condensate directly during use, resulting in resource waste and increased operating costs.

Method used

A condensate recovery device for a shaft seal heat exchanger was designed. It utilizes the negative pressure condensate recovery structure of the heat exchanger to recover heat through condensation heat exchange and recovers the condensate back to the condenser through negative pressure. The electric vacuum valve is controlled in real time by a water level monitoring sensor to prevent vacuum drop. The quick-release conveying pipeline assembly facilitates maintenance.

Benefits of technology

It enables the recycling and reuse of high-quality condensate, reduces resource waste, lowers costs, and improves the unit's thermal efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a condensate recovery device for a shaft seal heat exchanger, comprising: a base, on which a negative pressure condensate recovery structure is installed; the negative pressure condensate recovery structure includes: a mounting platform, a heat exchange shell, a heat exchange chamber, a condenser heat exchanger, an inlet pipe, a first circulation pipe, a second circulation pipe, a pair of electric vacuum valves, a quick-release conveying pipeline assembly, and a condenser; this utility model relates to the field of shaft seal heat exchanger technology, and its beneficial effect is that it solves the problem that existing shaft seal heat exchangers generate condensate at the bottom during use, and this high-quality condensate is often directly discharged, causing a large amount of waste.
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Description

Technical Field

[0001] This utility model relates to the field of shaft seal heat exchanger technology, specifically to a shaft seal heat exchanger condensate recovery device. Background Technology

[0002] Shaft seal heaters are devices that recover leaking steam from shaft seals and use its heat to heat condensate, reducing energy loss and improving unit thermal efficiency. In the process of using existing shaft seal heat exchangers, condensate is generated at the bottom. This high-quality condensate is often directly discharged, resulting in a lot of waste. Utility Model Content

[0003] To achieve the above objectives, this utility model is implemented through the following technical solution: a shaft seal heat exchanger condensate recovery device, comprising: an equipment base, on which a heat exchanger negative pressure condensate recovery structure is installed; The heat exchanger negative pressure condensate recovery structure includes: mounting platform, heat exchange shell, heat exchange chamber, condenser heat exchanger, inlet pipe, first circulation pipe, second circulation pipe, a pair of electric vacuum valves, quick-release delivery pipeline assembly, and condenser. The mounting platform is installed on the left side of the upper wall of the equipment base. The heat exchange shell is installed on the mounting platform, and the heat exchange chamber is opened inside the heat exchange shell. The condenser heat exchanger is installed inside the heat exchange chamber. The air inlet pipe is embedded in the air inlet on the front wall of the heat exchange shell. The first circulation pipe and the second circulation pipe are embedded in the upper wall of the heat exchange shell, and their lower ends are respectively installed on the inlet and outlet of the condenser heat exchanger. One of the pair of electric vacuum valves is installed on the water outlet on the lower wall of the heat exchange shell. The condenser is installed on the right side of the mounting platform, and the other of the pair of electric vacuum valves is installed at the condenser inlet. The quick-release delivery pipeline assembly is installed on the pair of electric vacuum valves.

[0004] Preferably, the heat exchange shell is mounted on the mounting platform via a support frame.

[0005] Preferably, the condenser is mounted on the equipment base via a pair of mounting brackets.

[0006] Preferably, a water level monitoring sensor is installed inside the heat exchange chamber.

[0007] Preferably, the quick-release conveying pipe assembly includes: a pair of rotating combination sleeves, a pair of locking blocks, a U-shaped water seal, and a pair of combination slots; A pair of rotating combination sleeves are movably installed at the port positions of a pair of electric vacuum valves. A pair of locking blocks are installed on the inner wall of the pair of rotating combination sleeves. A pair of combination slots are opened on the outer wall of the two ends of the U-shaped water seal. The U-shaped water seal is installed on the pair of rotating combination sleeves through the pair of combination slots.

[0008] Preferably, the rotating assembly sleeve and the U-shaped water seal are assembled and fixed by locking bolts. Beneficial effects

[0009] This utility model provides a condensate recovery device for a shaft seal heat exchanger, which has the following advantages: This solution uses a negative pressure condensate recovery structure for the heat exchanger. The heat in the recovered steam is condensed into water through heat exchange and condensation, and then recovered and reused through negative pressure. This reduces resource waste and lowers costs. It solves the problem that existing shaft seal heat exchangers generate condensate at the bottom during use, and this high-quality condensate is often directly discharged, causing a lot of waste. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of a shaft seal heat exchanger condensate recovery device according to the present invention.

[0011] Figure 2 This is a schematic diagram of the main structure of a shaft seal heat exchanger condensate recovery device according to the present invention.

[0012] Figure 3 This is a cross-sectional perspective view of the heat exchange shell of the shaft seal heat exchanger condensate recovery device of the present invention.

[0013] Figure 4 This is a three-dimensional structural diagram of the U-shaped water seal of the shaft seal heat exchanger condensate recovery device of the present invention.

[0014] Figure 5 This is a three-dimensional structural diagram of the rotating assembly sleeve of the shaft seal heat exchanger condensate recovery device of the present invention.

[0015] In the diagram: 1-Equipment base; 2-Mounting platform; 3-Heat exchange shell; 4-Heat exchange chamber; 5-Condensing heat exchanger; 6-Inlet pipe; 7-First circulation pipe; 8-Second circulation pipe; 9-Electric vacuum valve; 10-Condenser; 11-Support frame; 12-Fixed seat; 13-Water level monitoring sensor; 14-Rotating combination sleeve; 15-Locking block; 16-U-shaped water seal; 17-Combination slot; 18-Locking bolt. Detailed Implementation

[0016] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Example: Please refer to Figure 1-5 This utility model provides a technical solution: a shaft seal heat exchanger condensate recovery device. This solution takes into account that in the operation of existing shaft seal heat exchangers, high-temperature water vapor will condense into water, and high-quality condensate cannot be recovered and reused. Direct discharge will cause a lot of resource waste and increase the cost of use. Based on the above, this invention sets up the following technical means. Specifically, this device includes at least an equipment base 1, a mounting platform 2, a heat exchange shell 3, a heat exchange chamber 4, a condenser heat exchanger 5, an air inlet pipe 6, a first circulation pipe 7, a second circulation pipe 8, a pair of electric vacuum valves 9, a quick-release conveying pipeline assembly, and a condenser 10. The quick-release conveying pipeline assembly includes: a pair of rotating combination sleeves 14, a pair of locking blocks 15, a U-shaped water seal 16, and a pair of combination grooves 17; The equipment base 1 provides overall support for the equipment. During use, high-temperature steam is delivered through the inlet pipe 6 into the heat exchange chamber 4 inside the heat exchange shell 3. The condenser heat exchanger 5, installed in the heat exchange chamber 4, then circulates a low-temperature medium through the first circulation pipe 7 and the second circulation pipe 8 for heat exchange, causing the high-temperature steam to condense into condensate water which falls into the lower part of the heat exchange chamber 4. A pair of electric vacuum valves 9 open. Due to the negative pressure inside the condenser 10, the condensate water is transported to the condenser 10 for recycling under pressure through the U-shaped water seal 16. The water level monitoring sensor 13 installed in the heat exchange chamber 4... The system continuously monitors the condensate water level. When the water level is too low, the electric vacuum valve 9 is automatically shut off to prevent gas from entering the condenser 10 and to avoid a drop in the vacuum inside the condenser 10. When maintaining or replacing the U-shaped water seal 16, the locking bolts 18 used for locking are removed. The rotating combination sleeve 14 installed on the electric vacuum valve 9 is rotated so that it is unscrewed from the transverse groove of the combination slot 17 at the port of the U-shaped water seal 16. The U-shaped water seal 16 is then pulled out through the combination slot 17 to achieve disassembly. This allows for quick disassembly and installation, avoiding the cumbersome steps of removing a large number of bolts required for traditional flange connections.

[0018] More specifically, the mounting platform 2 is installed on the left side of the upper wall of the equipment base 1, the heat exchange shell 3 is installed on the mounting platform 2, the heat exchange chamber 4 is opened inside the heat exchange shell 3, the condenser heat exchanger 5 is installed inside the heat exchange chamber 4, the air inlet pipe 6 is embedded in the air inlet on the front wall of the heat exchange shell 3, the first circulation pipe 7 and the second circulation pipe 8 are embedded on the upper wall of the heat exchange shell 3 and their lower ends are respectively installed on the inlet and outlet of the condenser heat exchanger 5, one of the pair of electric vacuum valves 9 is installed on the water outlet on the lower wall of the heat exchange shell 3, the condenser 10 is installed on the right side of the mounting platform 2, the other of the pair of electric vacuum valves 9 is installed at the inlet of the condenser 10, and the quick-release conveying pipeline assembly is installed on the pair of electric vacuum valves 9; A pair of rotating combination sleeves 14 are movably installed at the port positions of a pair of electric vacuum valves 9. A pair of locking blocks 15 are installed on the inner wall surface of the pair of rotating combination sleeves 14. A pair of combination slots 17 are opened on the outer wall surface of the two ends of the U-shaped water seal 16. The U-shaped water seal 16 is installed on the pair of rotating combination sleeves 14 through the pair of combination slots 17.

[0019] In the specific implementation process, the heat exchange shell 3 is further mounted on the mounting platform 2 via the support frame 11.

[0020] In the specific implementation process, the condenser 10 is further mounted on the equipment base 1 by a pair of fixed seats 12.

[0021] In the specific implementation process, a water level monitoring sensor 13 is further installed inside the heat exchange chamber 4.

[0022] In the specific implementation process, the rotating combination sleeve 14 and the U-shaped water seal 16 are further combined and fixed by locking bolts 18.

[0023] 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. A shaft seal heat exchanger drain recovery device, comprising: The equipment base (1) is characterized in that a heat exchanger negative pressure condensate recovery structure is installed on the equipment base (1); The heat exchanger negative pressure condensate recovery structure includes: mounting platform (2), heat exchange shell (3), heat exchange chamber (4), condenser heat exchanger (5), air inlet pipe (6), first circulation pipe (7), second circulation pipe (8), a pair of electric vacuum valves (9), quick-release delivery pipeline assembly and condenser (10). The mounting platform (2) is installed on the left side of the upper wall of the equipment base (1). The heat exchange shell (3) is installed on the mounting platform (2). The heat exchange chamber (4) is opened inside the heat exchange shell (3). The condenser heat exchanger (5) is installed inside the heat exchange chamber (4). The air inlet pipe (6) is embedded in the air inlet on the front wall of the heat exchange shell (3). The first circulation pipe (7) and the second circulation pipe (8) are embedded on the upper wall of the heat exchange shell (3) and their lower ends are respectively installed on the inlet and outlet of the condenser heat exchanger (5). One of the pair of electric vacuum valves (9) is installed on the water outlet on the lower wall of the heat exchange shell (3). The condenser (10) is installed on the right side of the mounting platform (2). The other of the pair of electric vacuum valves (9) is installed at the inlet of the condenser (10). The quick-release conveying pipeline assembly is installed on the pair of electric vacuum valves (9).

2. The device according to claim 1, wherein The heat exchange shell (3) is mounted on the mounting platform (2) via a support frame (11).

3. The device according to claim 1, wherein The condenser (10) is mounted on the equipment base (1) via a pair of mounting brackets (12).

4. The device according to claim 1, wherein A water level monitoring sensor (13) is installed inside the heat exchange chamber (4).

5. The device of claim 1, wherein, The quick-release conveying pipe assembly includes: a pair of rotating combination sleeves (14), a pair of locking blocks (15), a U-shaped water seal (16), and a pair of combination slots (17). A pair of rotating combination sleeves (14) are movably installed at the port of a pair of electric vacuum valves (9), a pair of locking blocks (15) are installed on the inner wall of a pair of rotating combination sleeves (14), and a pair of combination slots (17) are opened on the outer wall of the two ends of the U-shaped water seal (16). The U-shaped water seal (16) is installed on a pair of rotating combination sleeves (14) through a pair of combination slots (17).

6. The device of claim 5, wherein, The rotating combination sleeve (14) and the U-shaped water seal (16) are combined and fixed by locking bolts (18).