Exhaust steam heat recovery device of steam turbine

Abstract

The utility model relates to the technical field of heat recovery devices, and discloses a steam turbine exhaust steam heat recovery device. The steam turbine exhaust steam heat recovery device comprises a box body, an air inlet pipe is arranged on the upper side of the left side wall of the box body, an air outlet pipe is arranged on the lower side of the right side wall of the box body, a heat exchange pipe is arranged on the bottom wall of the air inlet pipe, the heat exchange pipe is arranged on the top wall of the air outlet pipe, and the heat exchange pipe is located in an inner cavity of the box body. According to the scheme, through cooperation of the box body, the air inlet pipe, the air outlet pipe and other devices, water in the inner cavity of the box body can be conveniently and evenly heated through the device, water can be rapidly heated, and the heating efficiency of the device can be improved; and the heat exchange mesh, the heat exchange pipe, the box body and other devices are arranged to be matched, so that the device can conveniently recover heat in waste gas, more heat can be conveniently conducted into water, and the heating rate can be increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat recovery devices, in particular to a steam turbine exhaust heat recovery device. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle to become an accelerated airflow and is then sprayed onto the blades, causing the rotor equipped with the blade rows to rotate and perform work externally. The steam turbine will exhaust air when it is working, and the exhaust gas contains a large amount of heat. This heat is discharged into the air as the steam turbine, causing the heat to dissipate into the air and waste the heat. A recovery device can be used to recover the heat in the gas. Most existing recovery devices use heat exchange tubes to heat and recover water. The heat diffuses unevenly in the water, which makes it inconvenient to heat the water evenly, resulting in reduced heat recovery efficiency. For this reason, we propose a steam turbine exhaust heat recovery device. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a steam turbine exhaust heat recovery device, which effectively solves the problem that most of the existing recovery devices use heat exchange tubes to heat and recover water, the heat diffuses unevenly in the water, making it inconvenient to heat the water evenly, resulting in reduced heat recovery efficiency.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steam turbine exhaust heat recovery device, comprising a box body, an air inlet pipe is arranged on the upper side of the left side wall of the box body, an air outlet pipe is arranged on the lower side of the right side wall of the box body, a heat exchange pipe is arranged on the bottom wall of the air inlet pipe, the heat exchange pipe is arranged on the top wall of the air outlet pipe, the heat exchange pipe is located in the inner cavity of the box body, a stirring blade is arranged on the outer wall of the heat exchange pipe, a motor is arranged on the top wall of the box body, a gear is arranged on the output end of the motor, a gear ring is arranged on the upper side of the outer wall of the heat exchange pipe, the gear ring is meshed with the gear, and liquid valves are arranged on the upper and lower side walls of the box body.

[0005] Preferably, heat exchange meshes are evenly arranged on the inner wall of the heat exchange tube, and the heat exchange meshes are arranged vertically.

[0006] Preferably, the outer wall of the heat exchange tube is evenly provided with heat exchange fins, and the heat exchange fins are spirally arranged.

[0007] Preferably, a clamping frame is provided on the front and rear side walls of the inner cavity of the air intake pipe, and a filter mesh frame is provided on the inner wall of the clamping frame.

[0008] Preferably, the bottom wall of the box body is evenly provided with supporting feet, and the bottom ends of the supporting feet are provided with buffer pads.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The steam turbine exhaust heat recovery device can evenly heat the water in the inner cavity of the box by arranging the box body, the air inlet pipe and the air outlet pipe, so as to facilitate the rapid water heating treatment and improve the heating efficiency of the device;

[0011] 2. The steam turbine exhaust heat recovery device can recover the heat in the exhaust gas by arranging heat exchange mesh, heat exchange tube and box body, so as to conduct more heat into the water, which is beneficial to improve the heating rate;

[0012] 3. The steam turbine exhaust heat recovery device can facilitate the filtering of exhaust gas by arranging a filter frame, a clamping frame and an air inlet pipe, thereby reducing the impurities in the exhaust gas from entering the inner cavity of the device and avoiding the accumulation of impurities that affect the heat exchange of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] In the attached picture:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the heat exchange tube of the utility model;

[0017] Figure 3 For this utility model Figure 2 A magnified view of part A in FIG.

[0018] In the figure: 100, box body; 101, air inlet pipe; 102, air outlet pipe; 103, heat exchange tube; 104, stirring blade; 105, motor; 106, gear; 107, gear ring; 108, liquid valve; 109, heat exchange mesh; 110, heat exchange fin; 111, clamping frame; 112, filter mesh frame; 113, supporting foot. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] Reason Figure 1 , Figure 2 sum Figure 3The utility model provides a steam turbine exhaust heat recovery device, an air inlet pipe 101 is fixedly connected to the upper side of the left side wall of the box body 100, and the air inlet pipe 101 is conveniently connected to the exhaust pipe to pass the exhaust gas into the device, and the lower side of the right side wall of the box body 100 is fixedly connected to the air outlet pipe 102, and the exhaust gas is conveniently discharged through the air outlet pipe 102, and the bottom wall of the air inlet pipe 101 is rotatably connected to the heat exchange pipe 103, and the heat exchange pipe 103 is rotatably connected to the air inlet pipe 101 and the air outlet pipe 102 through a sealed bearing, and the heat is conveniently conducted to the water through the heat exchange pipe 103, and the heat exchange pipe 103 is rotatably connected to the top wall of the air outlet pipe 102, and the heat exchange pipe 103 is located in the inner cavity of the box body 100, and the outer wall of the heat exchange pipe 103 is fixed A stirring blade 104 is connected, and the stirring blade 104 is used to stir and mix the liquid in the inner cavity of the box body 100. The top wall of the box body 100 is fixedly connected to a motor 105, and the motor 105 is used to drive the gear 106 to rotate. The output end of the motor 105 is fixedly connected to a gear 106, and the gear 106 is used to drive the gear ring 107 to rotate. The upper side of the outer wall of the heat exchange tube 103 is fixedly connected to a gear ring 107, and the gear ring 107 is used to drive the heat exchange tube 103 to rotate. The gear ring 107 is meshed with the gear 106. The upper and lower side walls of the box body 100 are fixedly connected to liquid valves 108, and the liquid valves 108 are used to facilitate the addition and discharge of liquid. Connect the water pipe to the upper liquid valve 108 , water is injected into the inner cavity of the box body 100, the air inlet pipe 101 is connected to the exhaust port of the steam turbine, the exhaust gas is passed into the air inlet pipe 101, and then the exhaust gas is introduced into the inner cavity of the heat exchange tube 103, and the heat is transferred to the water through the heat exchange tube 103, which is used to heat the water to achieve the purpose of heat recovery, and the motor 105 drives the gear 106 to rotate, and the gear 106 drives the gear ring 107 to rotate, and the gear ring 107 drives the heat exchange tube 103 to rotate, and the heat exchange tube 103 drives the stirring blade 104 to rotate, and the stirring blade 104 drives the liquid to flow and mix, so that the device can heat the water in the inner cavity of the box body 100 evenly, and is convenient for rapid water heating treatment, It is beneficial to improve the heating efficiency of the device. The inner wall of the heat exchange tube 103 is evenly fixedly connected to the heat exchange mesh 109, which is convenient for contact with the exhaust gas through the heat exchange mesh 109, which is beneficial for heat conduction. The heat exchange mesh 109 is arranged vertically; the heat exchange mesh 109 is convenient for increasing the contact area with the exhaust gas, which is convenient for quickly conducting heat to the heat exchange tube 103. The heat exchange tube 103 heats the liquid, which makes it convenient for the device to recover the heat in the exhaust gas and conduct more heat into the water, which is beneficial for improving the heating rate. The outer wall of the heat exchange tube 103 is evenly fixedly connected with the heat exchange fin 110, which is convenient for conducting heat to the liquid through the heat exchange fin 110, and the heat exchange fin 110 is arranged in a spiral;The heat exchange fins 110 are provided to facilitate the introduction of heat from the heat exchange tubes 103 into the liquid, which is convenient for improving the heat exchange efficiency of the device and is beneficial for heating the liquid. The front and rear side walls of the inner cavity of the air inlet pipe 101 are fixedly connected with a clamping frame 111, which is convenient for limiting and fixing the filter rack 112 through the clamping frame 111. The inner wall of the clamping frame 111 is clamped with a filter rack 112, which is convenient for filtering impurities in the exhaust gas through the filter rack 112; the filter rack 112 is provided to facilitate filtering the exhaust gas, reduce the impurities in the exhaust gas from entering the inner cavity of the device, and avoid the accumulation of impurities affecting the heat exchange of the device; the bottom wall of the box body 100 is evenly fixedly connected with a support foot 113, and the bottom end of the support foot 113 is fixedly connected with a buffer pad; the support foot 113 is provided to facilitate supporting the box body 100, and the vibration of the device can be buffered by the buffer pad. ;

[0021] Working principle: Connect the water pipe to the upper liquid valve 108, inject water into the inner cavity of the box 100, connect the air intake pipe 101 to the exhaust port of the steam turbine, pass the exhaust gas into the air intake pipe 101, and then introduce the exhaust gas into the inner cavity of the heat exchange tube 103. The heat is transferred to the water through the heat exchange tube 103 to heat the water to achieve the purpose of heat recovery. The motor 105 drives the gear 106 to rotate, the gear 106 drives the gear ring 107 to rotate, the gear ring 107 drives the heat exchange tube 103 to rotate, and the heat exchange tube 103 drives The stirring blades 104 rotate, and the stirring blades 104 drive the liquid to flow and mix, so that the device can evenly heat the water in the inner cavity of the box 100, and quickly heat the water, which is beneficial to improving the heating efficiency of the device. The heat exchange mesh 109 increases the contact area with the exhaust gas, and quickly transfers the heat to the heat exchange tube 103. The heat exchange tube 103 heats the liquid, so that the device can recover the heat in the exhaust gas and transfer more heat into the water, which is beneficial to improving the heating rate.

Claims

1. A steam turbine exhaust heat recovery device, comprising a housing (100), characterized in that: An air inlet pipe (101) is arranged on the upper side of the left side wall of the box body (100), an air outlet pipe (102) is arranged on the lower side of the right side wall of the box body (100), a heat exchange pipe (103) is arranged on the bottom wall of the air inlet pipe (101), the heat exchange pipe (103) is arranged on the top wall of the air outlet pipe (102), the heat exchange pipe (103) is located in the inner cavity of the box body (100), a stirring blade (104) is arranged on the outer wall of the heat exchange pipe (103), a motor (105) is arranged on the top wall of the box body (100), a gear (106) is arranged at the output end of the motor (105), a gear ring (107) is arranged on the upper side of the outer wall of the heat exchange pipe (103), the gear ring (107) is meshed with the gear (106), and liquid valves (108) are arranged on the upper and lower side walls of the box body (100).

2. The steam turbine exhaust heat recovery device according to claim 1, characterized in that: Heat exchange mesh sheets (109) are evenly arranged on the inner wall of the heat exchange tube (103), and the heat exchange mesh sheets (109) are arranged vertically.

3. The steam turbine exhaust heat recovery device according to claim 1, characterized in that: Heat exchange fins (110) are evenly arranged on the outer wall of the heat exchange tube (103), and the heat exchange fins (110) are arranged in a spiral shape.

4. The steam turbine exhaust heat recovery device according to claim 1, characterized in that: The front and rear side walls of the inner cavity of the air intake pipe (101) are provided with a clamping frame (111), and the inner wall of the clamping frame (111) is provided with a filter mesh frame (112).

5. The steam turbine exhaust heat recovery device according to claim 1, characterized in that: The bottom wall of the box body (100) is evenly provided with supporting feet (113), and the bottom ends of the supporting feet (113) are provided with buffer pads.

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