Thermal power plant multistage waste heat recoverer with good recovery effect

Abstract

The multistage waste heat recoverer is good in recovery effect and comprises a recoverer main body, a smoke inlet and a smoke outlet, the smoke inlet is formed in the recoverer main body, the smoke outlet is formed in the right end of the recoverer main body, a supporting platform is arranged in the recoverer main body, and the supporting platform is connected with the smoke inlet. The upper end of the supporting platform is connected with a first supporting plate, the recoverer body is connected with a sealing gasket and a connecting plate, a filter screen is installed on the connecting plate, and a spring is installed in the recoverer body. According to the thermal power plant multi-stage waste heat recoverer with the good recovery effect, the connecting plate is arranged, smoke can be filtered through a filter screen on the connecting plate, most impurities can be filtered out, when the thermal power plant multi-stage waste heat recoverer needs to be cleaned, a moving rod can be pulled to drive an inserting rod to move, and therefore limiting of the connecting plate is relieved; and a connecting plate can be detached, so that a filter screen can be cleaned, and the device is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery in thermal power plants, in particular to a multi-stage waste heat recovery device for thermal power plants with good recovery effect. Background Art

[0002] Thermal power plants mainly use natural gas or coal as energy to heat the boiler. The steam in the boiler drives the turbine, and the turbine drives the generator to generate electricity. From the various heat losses of the boiler, it can be seen that the exhaust heat loss is the largest one, which is generally 5-8% of the boiler efficiency. Moreover, as the operating life of the boiler increases, this loss is even higher, reaching about 10-15%. Therefore, flue gas waste heat recovery technology is the energy-saving technology with the most obvious energy-saving benefits and the fastest effect. It recycles part of the energy in the exhaust loss to improve the boiler efficiency.

[0003] However, it is not convenient to replace the filter screen of the multi-stage waste heat recovery device of the thermal power plant during use, which causes impurities attached to the flue gas to enter the inside of the recovery device, making it inconvenient to use, and it is not convenient to clean the heat exchange tube. When the flue gas after being filtered by the filter screen passes through the heat exchange tube, a small amount of impurities will adhere to the heat exchange tube. If it is not cleaned, it will affect the heat exchange efficiency. Chinese utility model CN201407924Y discloses a multi-stage waste heat recovery device, which can recover heat energy of different qualities by grading the heat exchange tube. However, it is not convenient to clean the heat exchange tube, making it inconvenient to use.

[0004] Therefore, we propose a multi-stage waste heat recovery device for a thermal power plant with good recovery effect in order to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-stage waste heat recovery device for a thermal power plant with good recovery effect, so as to solve the problems in the current market raised by the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-stage waste heat recovery device for a thermal power plant with good recovery effect, comprising a recovery device body, a smoke inlet and a smoke outlet, the recovery device body is provided with a smoke inlet, the right end of the recovery device body is provided with a smoke outlet, a support platform is arranged inside the recovery device body, a first support plate is connected to the upper end of the support platform, and a second support plate is connected to the outer side of the first support plate, a moving wheel is installed at the lower end of the support platform, a heat exchange tube is connected to the upper end of the support platform, a water outlet is connected to the outer side of the heat exchange tube, a water inlet is connected to the outer side of the heat exchange tube, a sealing gasket is connected to the recovery device body, a connecting plate is connected to the recovery device body, and a filter is installed on the connecting plate, and a spring is installed inside the recovery device body.

[0007] Preferably, there are two support platforms inside the recycler body, and the support platform is connected to the first support plate by welding, and the first support plate is connected to the second support plate by welding.

[0008] Preferably, the water outlet is connected to the recovery device body through a sealing gasket, and the number of the sealing gaskets is twice the number of the water outlets, and a partition is installed in the middle of the recovery device body.

[0009] Preferably, the connection between the connecting plate and the recycler body is a movable connection, and the connecting plate forms a movable structure on the recycler body, and the width of the connecting plate is the same as the width of the recycler body.

[0010] Preferably, an insertion rod is connected to the main body of the recycler, and a moving rod is connected to the outer side of the insertion rod.

[0011] Preferably, the insertion rod is connected to the recycler body by a movable connection, the insertion rod forms a movable structure on the recycler body, and the insertion rod and the movable rod are connected by welding.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the multi-stage waste heat recovery device for thermal power plants has good recovery effect;

[0013] (1) A connecting plate is provided, and the filter screen on the connecting plate can filter the smoke and filter most impurities. When it needs to be cleaned, the moving rod can be pulled to drive the insertion rod to move, thereby releasing the limit on the connecting plate, so that the connecting plate can be disassembled, so that the filter screen can be cleaned, making it convenient to use.

[0014] (2) A heat exchange tube is provided, through which the flue gas is exchanged. The shape of the heat exchange tube is designed to enable better heat exchange. The heat exchange tube can be cleaned to prevent impurities from accumulating on the heat exchange tube and affecting its heat exchange efficiency. After cleaning, the remaining heat recovery efficiency is higher, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the top view of the heat exchange tube structure of the utility model;

[0018] Figure 4 For this utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0019] In the figure: 1. Recycler body; 2. Smoke inlet; 3. Smoke outlet; 4. Support platform; 5. First support plate; 6. Second support plate; 7. Moving wheel; 8. Heat exchange tube; 9. Water outlet; 10. Water inlet; 11. Sealing gasket; 12. Connecting plate; 13. Filter; 14. Spring; 15. Insert rod; 16. Moving rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: a multi-stage waste heat recovery device for a thermal power plant with good recovery effect, comprising a recovery device body 1, a smoke inlet 2, a smoke outlet 3, a support platform 4, a first support plate 5, a second support plate 6, a moving wheel 7, a heat exchange tube 8, a water outlet 9, a water inlet 10, a sealing gasket 11, a connecting plate 12, a filter screen 13, a spring 14, an insertion rod 15 and a moving rod 16, a smoke inlet 2 is opened on the recovery device body 1, a smoke outlet 3 is opened at the right end of the recovery device body 1, and the recovery device body 1 has ... a heat exchange tube 8, a water outlet 9, a water inlet 10, a sealing gasket 11, a connecting plate 12, a filter screen 13, a spring 14, an insertion rod 15 and a moving rod 16, A support platform 4 is provided, a first support plate 5 is connected to the upper end of the support platform 4, and a second support plate 6 is connected to the outer side of the first support plate 5, a moving wheel 7 is installed at the lower end of the support platform 4, a heat exchange tube 8 is connected to the upper end of the support platform 4, a water outlet 9 is connected to the outer side of the heat exchange tube 8, a water inlet 10 is connected to the outer side of the heat exchange tube 8, a sealing gasket 11 is connected to the recoverer body 1, a connecting plate 12 is connected to the recoverer body 1, a filter screen 13 is installed on the connecting plate 12, and a spring 14 is installed inside the recoverer body 1.

[0022] There are two support platforms 4 inside the recovery device body 1. The number of support platforms 4 inside the recovery device body 1 is designed to facilitate the support of two heat exchange tubes 8, thereby facilitating use. The support platform 4 is connected to the first support plate 5 by welding, and the first support plate 5 is connected to the second support plate 6 by welding. The connection method between the first support plate 5 and the second support plate 6 makes the connection between the first support plate 5 and the second support plate 6 more stable, thereby preventing it from falling off, and facilitating the second support plate 6 to support the heat exchange tube 8, thereby facilitating use.

[0023] The water outlet 9 is connected to the recovery device body 1 through a sealing gasket 11, so that the connection of the water outlet 9 is more sealed to avoid smoke leakage and make it convenient to use. The number of sealing gaskets 11 is twice the number of water outlets 9, and a partition is installed in the middle of the recovery device body 1.

[0024] The connection between the connecting plate 12 and the recycling device body 1 is a movable connection. The connection between the connecting plate 12 and the recycling device body 1 makes it easy for the connecting plate 12 to be moved on the recycling device body 1, thereby facilitating the disassembly of the connecting plate 12, making it convenient to clean the filter screen 13, avoiding clogging of the filter holes and affecting its recycling efficiency, making it convenient to use. The connecting plate 12 constitutes a movable structure on the recycling device body 1, and the width of the connecting plate 12 is the same as the width of the recycling device body 1, thereby preventing smoke from passing through the side of the connecting plate 12.

[0025] An insertion rod 15 is connected to the recycler body 1 , and a moving rod 16 is connected to the outer side of the insertion rod 15 .

[0026] The connection between the insertion rod 15 and the recycler body 1 is a movable connection. The connection between the insertion rod 15 and the recycler body 1 makes it convenient for the insertion rod 15 to move on the recycler body 1, so as to facilitate the limiting of the connecting plate 12 by the insertion rod 15 to prevent it from being displaced and affecting its use. The insertion rod 15 constitutes a movable structure on the recycler body 1, and the connection between the insertion rod 15 and the moving rod 16 is welding. The connection between the insertion rod 15 and the moving rod 16 makes the connection between the insertion rod 15 and the moving rod 16 more stable, thereby preventing it from falling off and affecting its use, and conveniently driving the insertion rod 15 to move by the moving rod 16, thereby being able to release the limiting of the connecting plate 12, making it convenient to disassemble the connecting plate 12.

[0027] Working principle: When using the multi-stage waste heat recovery device of a thermal power plant with good recovery effect, first, check the integrity of the device, then transport the device to the corresponding working position, then let water in through the water inlet 10, then let the flue gas in through the smoke inlet 2, filter through the filter 13, and then let the flue gas pass through the heat exchange tube 8, so that the high-temperature flue gas and the low-temperature water can exchange heat, so that it can recover the waste heat. When the filter 13 needs to be disassembled, the moving rod 16 can be pulled to drive the insertion rod 15 to move, so that the limit on the connecting plate 12 can be released, making it convenient to disassemble the connecting plate 12, and then the filter 13 can be cleaned.

[0028] When the heat exchange tube 8 needs to be cleaned, the side cover of the recovery device body 1 can be opened, and then the support platform 4 can be pulled to drive the heat exchange tube 8 to move, so that the heat exchange tube 8 can be moved out of the recovery device body 1. The heat exchange tube 8 can then be cleaned to make it convenient to use. The contents not described in detail in this specification, such as the heat exchange tube 8, etc., are all existing technologies known to professional and technical personnel in this field.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-stage waste heat recovery device for a thermal power plant with good recovery effect, comprising a recovery device body (1), a smoke inlet (2) and a smoke outlet (3), characterized in that: The main body (1) of the recycler is provided with a smoke inlet (2), the right end of the main body (1) of the recycler is provided with a smoke outlet (3), a support platform (4) is arranged inside the main body (1), the upper end of the support platform (4) is connected to a first support plate (5), and the outer side of the first support plate (5) is connected to a second support plate (6), the lower end of the support platform (4) is equipped with a moving wheel (7), the upper end of the support platform (4) is connected to a heat exchange tube (8), the outer side of the heat exchange tube (8) is connected to a water outlet (9), and the outer side of the heat exchange tube (8) is connected to a water inlet (10), the main body (1) of the recycler is connected to a sealing gasket (11), the main body (1) of the recycler is connected to a connecting plate (12), and a filter screen (13) is installed on the connecting plate (12), and a spring (14) is installed inside the main body (1) of the recycler.

2. A multi-stage waste heat recovery device for a thermal power plant with good recovery effect according to claim 1, characterized in that: The number of the support platforms (4) inside the recycler body (1) is two, and the support platforms (4) are connected to the first support plate (5) by welding, and the first support plate (5) is connected to the second support plate (6) by welding.

3. A multi-stage waste heat recovery device for a thermal power plant with good recovery effect according to claim 1, characterized in that: The water outlet (9) is connected to the recovery device body (1) via a sealing gasket (11), and the number of the sealing gaskets (11) is twice the number of the water outlets (9), and a partition is installed in the middle of the recovery device body (1).

4. A multi-stage waste heat recovery device for a thermal power plant with good recovery effect according to claim 1, characterized in that: The connection between the connecting plate (12) and the recycler body (1) is a movable connection, and the connecting plate (12) forms a movable structure on the recycler body (1), and the width of the connecting plate (12) is the same as the width of the recycler body (1).

5. The multi-stage waste heat recovery device for a thermal power plant with good recovery effect according to claim 1, characterized in that: The recycler body (1) is connected to an insertion rod (15), and a moving rod (16) is connected to the outside of the insertion rod (15).

6. A multi-stage waste heat recovery device for a thermal power plant with good recovery effect according to claim 5, characterized in that: The insertion rod (15) is connected to the recycler body (1) in a movable manner, and the insertion rod (15) forms a movable structure on the recycler body (1), and the insertion rod (15) is connected to the movable rod (16) in a welding manner.

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