Dead steam waste heat recovery device of high-back-pressure combined heat and power generation steam turbine

Abstract

The utility model discloses a high back pressure cogeneration steam turbine dead steam waste heat recovery device which comprises a shell, a connecting pipe is arranged on one side of the shell, a motor base is arranged on the outer side of the connecting pipe, the motor base is fixedly connected with a motor support, the motor support is fixedly connected with a motor, one end of the motor is fixedly connected with an output gear, and the other end of the motor is fixedly connected with an output shaft. The output gear is in meshed connection with a fan assembly, one end of the fan assembly is fixedly connected with a connecting pipe, one end of one side of the connecting pipe is fixedly connected with a rotating assembly, one end of the rotating assembly is fixedly connected with a power generation assembly, and an exchange assembly is arranged on one side of the power generation assembly. The waste steam waste heat recovery device solves the problem that an existing waste steam waste heat recovery device does not well utilize waste steam flowing in a pipeline, so that resource waste is caused, waste steam resources are better utilized, resource waste is reduced, and meanwhile electric energy is generated to meet different electric energy requirements of equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust steam waste heat recovery devices, in particular to an exhaust steam waste heat recovery device for a high back pressure cogeneration steam turbine. Background Art

[0002] In the process of cogeneration, the steam turbine is one of the core equipment. During its operation, it will generate a large amount of exhaust steam. If the exhaust steam is directly discharged into the atmosphere, it will not only cause a waste of energy, but also have a certain impact on the environment. The exhaust steam waste heat recovery device collects the exhaust steam of the steam turbine through a special pipeline, and then uses a heat exchanger to transfer the waste heat in the exhaust steam to the working medium. The existing exhaust steam waste heat recovery device does not make good use of the exhaust steam flowing in the pipeline, resulting in a waste of resources.

[0003] In view of this, we propose a high back pressure cogeneration steam turbine exhaust heat recovery device. Utility Model Content

[0004] The utility model aims to provide a high back pressure cogeneration steam turbine exhaust heat recovery device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high back pressure cogeneration steam turbine exhaust heat recovery device, comprising a shell, a connecting pipe is provided on one side of the shell, a motor base is provided on the outside of the connecting pipe, the motor base is fixedly connected to the motor bracket, the motor bracket is fixedly connected to the motor, one end of the motor is fixedly connected to the output gear, the output gear is meshed and connected to the fan assembly, one end of the fan assembly is fixedly connected to the connecting pipe, one end of the connecting pipe is fixedly connected to the rotating assembly, one end of the rotating assembly is fixedly connected to the power generation assembly, and one side of the power generation assembly is provided with an exchange assembly.

[0006] Preferably, a limit block is provided inside the connecting pipe, and the limit block is fixedly connected to one end of the fan assembly via a screw.

[0007] Preferably, the fan assembly includes an L-shaped bracket, one end of the L-shaped bracket is rotatably connected to the central shaft, one end of the central shaft is fixedly connected to the output gear 2, and the other end of the central shaft is fixedly connected to the blades.

[0008] Preferably, the L-shaped bracket is composed of a connecting rod, a ring and a connecting block, the connecting block is fixedly connected to the limit block by a screw, the inner wall of the ring is slidably connected to the central axis and includes a square outer shell, a spherical impeller cover is provided inside the square outer shell, an impeller is provided inside the spherical impeller cover, the impeller is fixedly connected to one end of a transmission rod for providing rotational power, and the other end of the transmission rod is rotatably connected to a power generation assembly.

[0009] Preferably, one end of the square shell is fixedly connected to the connecting pipe, the other end of the square shell is fixedly connected to one end of the extension pipe, and the other end of the extension pipe is fixedly connected to the inside of the exchange component.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model cooperates with a motor and a fan assembly. One end of the motor is fixedly connected to an output gear, and the output gear and the fan assembly are meshed. When the output gear rotates, the fan assembly will also rotate accordingly, so that the rotation of the fan in the fan assembly can effectively affect the airflow in the connecting pipe. One end of the connecting pipe is fixedly connected to a rotating assembly, and one end of the rotating assembly is fixedly connected to a power generation assembly. When the rotating assembly is activated, it will drive the power generation assembly to operate, thereby better utilizing exhaust steam resources and reducing resource waste, and at the same time generating electrical energy to meet the different power requirements of the equipment.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0014] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0015] Figure 2 This is a cross-sectional view of the outer shell structure in the utility model from top view;

[0016] Figure 3 It is a cross-sectional view of the overall structure of the utility model;

[0017] Figure 4 This is a cross-sectional view of the connecting pipe structure in the utility model from top view;

[0018] In the figure: 1. outer casing; 2. connecting pipe; 3. motor base; 4. motor bracket; 5. motor; 6. output gear; 7. fan assembly; 8. rotating assembly; 9. power generation assembly; 10. exchange assembly; 11. screw; 12. extension pipe; 201. limit block; 701. L-shaped bracket; 702. central axis; 703. output gear 2; 704. blades; 705. connecting rod; 706. collar; 707. connecting block; 801. square outer casing; 802. spherical impeller cover; 803. impeller; 804. transmission rod. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0023] Example

[0024] like Figures 1 to 4As shown, it is a structural schematic diagram of a high back pressure cogeneration steam turbine exhaust heat recovery device in a preferred embodiment of the utility model. The shell 1 of this embodiment is provided with a connecting pipe 2 on one side of the shell 1, and a motor base 3 is provided on the outside of the connecting pipe 2. The motor base 3 is fixedly connected to the motor bracket 4, and the motor bracket 4 is fixedly connected to the motor 5. One end of the motor 5 is fixedly connected to the output gear 6, and the output gear 6 is meshed and connected to the fan assembly 7. One end of the fan assembly 7 is fixedly connected to the connecting pipe 2, and one end of the connecting pipe 2 is fixedly connected to the rotating assembly 8, and one end of the rotating assembly 8 is fixedly connected to the power generation assembly 9. An exchange assembly 10 is provided on one side of the power generation assembly 9. The utility model cooperates with the fan assembly through the motor, and one end of the motor is fixedly connected to the output gear, and the output gear and the fan assembly are meshed. When the output gear rotates, the fan assembly will also rotate accordingly, so that the rotation of the fan in the fan assembly can effectively affect the airflow in the connecting pipe, one end of the connecting pipe is fixedly connected to the rotating assembly, and one end of the rotating assembly is fixedly connected to the power generation assembly. When the rotating assembly is activated, it will drive the power generation assembly to operate, thereby better utilizing the exhaust steam resources and reducing resource waste, and generating electrical energy to meet the different power requirements of the equipment.

[0025] It should be noted that a limit block 201 is provided inside the connecting pipe 2, and the limit block 201 is fixedly connected to one end of the fan assembly 7 through a screw 11. A structure called a limit block is designed inside the connecting pipe. The main function of the limit block is to provide stable support and limit the position of the fan assembly in the connecting pipe, ensuring that the fan assembly will not deviate from the predetermined position during operation, thereby maintaining the stable operation of the entire system.

[0026] It should be noted that the fan assembly 7 includes an L-shaped bracket 701, one end of the L-shaped bracket 701 is rotatably connected to the central shaft 702, one end of the central shaft 702 is fixedly connected to the output gear 2 703, and the other end of the central shaft 702 is fixedly connected to the blades 704. The stability and efficient operation of the fan are ensured by the L-shaped bracket in the fan assembly; the central shaft, as a key part of power transmission and support, ensures the stability and durability of the fan; and the synergistic effect of the output gear and the blades enables the fan assembly to efficiently dissipate heat, ventilate or generate the required airflow.

[0027] It should be noted that the L-shaped bracket 701 is composed of a connecting rod 705, a ring 706 and a connecting block 707. The connecting block 707 is fixedly connected to the limit block 201 by a screw 11. The inner wall of the ring 706 is slidably connected to the central axis 702. The fixed connection between the connecting block and the limit block in the L-shaped bracket and the sliding connection between the ring and the central axis ensures the stability, smoothness and low-noise operation of the fan assembly.

[0028] It should be noted that the rotating component 8 includes a square outer shell 801, a spherical impeller cover 802 is provided inside the square outer shell 801, an impeller 803 is provided inside the spherical impeller cover 802, the impeller 803 is fixedly connected to one end of a transmission rod 804 for providing rotational power, and the other end of the transmission rod 804 is rotatably connected to the power generation component 9. The square outer shell in the rotating component provides stable protection to ensure the safe operation of the internal components; the spherical impeller cover reduces air resistance and improves the rotation efficiency of the impeller; and the synergistic effect of the impeller and the transmission rod, in conjunction with the power generation component, enables it to effectively convert the fluid kinetic energy into electrical energy.

[0029] It should be noted that one end of the square shell 801 is fixedly connected to the connecting pipe 2, and the other end of the square shell 801 is fixedly connected to one end of the extension pipe 12, and the other end of the extension pipe 12 is fixedly connected to the inside of the exchange component 10. By fixing one end of the square shell to the connecting pipe, a tight connection and stable energy transmission between the rotating component and the fan component or other upstream components are ensured. When the fan component generates airflow or mechanical energy, these energies can be smoothly transmitted to the inside of the rotating component through the connecting pipe, thereby driving the impeller to rotate, and at the same time, its exhaust steam can also enter the exchange component through the extension pipe for exchange, so that its exhaust steam resources can be better utilized.

[0030] It should be noted that, first, a connecting pipe is provided on one side of the shell, which is connected to the exhaust port of the cogeneration steam turbine for receiving exhaust steam. A limit block is provided inside the connecting pipe, which is fixedly connected to one end of the fan assembly by a screw to ensure the stability and accuracy of the fan assembly during operation.

[0031] The fan assembly is one of the key parts of the device. It is supported by an L-shaped bracket and connected to the output gear and blades through a central shaft. When the motor is started, it drives the output gear to rotate, which in turn drives the fan assembly to rotate. The L-shaped bracket of the fan assembly consists of a connecting rod, a collar and a connecting block. This structure ensures the stability and reliability of the fan assembly when rotating at high speed.

[0032] As the fan assembly rotates, it generates a strong airflow, sucking the exhaust steam from the combined heat and power steam turbine into the device. This exhaust steam contains a large amount of waste heat energy and is the main source of energy recovery for the device.

[0033] Next, the rotating assembly fixedly connected at one end of the connecting pipe begins to work. The rotating assembly includes a square outer shell and an internal spherical impeller cover, impeller and other components. When the exhaust steam enters the rotating assembly, it will impact the impeller and make it rotate. The rotational motion of the impeller is transmitted to the power generation assembly through the transmission rod, which in turn drives the power generation assembly to generate electricity. Finally, the exhaust steam is transmitted to the exchange assembly through the extension pipe. The exchange assembly is responsible for recovering the waste heat in the exhaust steam. First, a connecting pipe is provided on one side of the outer shell. The connecting pipe is connected to the exhaust port of the cogeneration steam turbine to receive the exhaust steam. A limit block is provided inside the connecting pipe, which is fixedly connected to one end of the fan assembly by a screw to ensure the stability and accuracy of the fan assembly during operation.

[0034] The fan assembly is one of the key parts of the device. It is supported by an L-shaped bracket and connected to the output gear and blades through a central shaft. When the motor is started, it drives the output gear to rotate, which in turn drives the fan assembly to rotate. The L-shaped bracket of the fan assembly consists of a connecting rod, a collar and a connecting block. This structure ensures the stability and reliability of the fan assembly when rotating at high speed.

[0035] As the fan assembly rotates, it generates a strong airflow, sucking the exhaust steam from the combined heat and power steam turbine into the device. This exhaust steam contains a large amount of waste heat energy and is the main source of energy recovery for the device.

[0036] Next, the rotating assembly fixed at one end of the connecting pipe begins to work. The rotating assembly includes a square outer shell and an internal spherical impeller cover, impeller and other components. When the exhaust steam enters the rotating assembly, it impacts the impeller and makes it rotate. The rotation of the impeller is transmitted to the power generation assembly through the transmission rod, which in turn drives the power generation assembly to generate electricity. Finally, the exhaust steam is transmitted to the inside of the exchange assembly through the extension pipe. The exchange assembly is responsible for recovering the waste heat in the exhaust steam.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high back pressure cogeneration steam turbine exhaust heat recovery device, comprising: The housing (1) is characterized in that: a connecting pipe (2) is provided on one side of the housing (1), a motor base (3) is provided on the outside of the connecting pipe (2), the motor base (3) is fixedly connected to a motor bracket (4), the motor bracket (4) is fixedly connected to a motor (5), one end of the motor (5) is fixedly connected to an output gear (6), the output gear (6) is meshingly connected to a fan assembly (7), one end of the fan assembly (7) is fixedly connected to the connecting pipe (2), one end of one side of the connecting pipe (2) is fixedly connected to a rotating assembly (8), one end of the rotating assembly (8) is fixedly connected to a power generation assembly (9), and one side of the power generation assembly (9) is provided with an exchange assembly (10).

2. The high back pressure cogeneration steam turbine exhaust heat recovery device according to claim 1, characterized in that: A limit block (201) is provided inside the connecting pipe (2), and the limit block (201) is fixedly connected to one end of the fan assembly (7) via a screw rod (11).

3. The high back pressure cogeneration steam turbine exhaust heat recovery device according to claim 1, characterized in that: The fan assembly (7) comprises an L-shaped bracket (701), one end of the L-shaped bracket (701) is rotatably connected to a central shaft (702), one end of the central shaft (702) is fixedly connected to output gear 2 (703), and the other end of the central shaft (702) is fixedly connected to blades (704).

4. The high back pressure cogeneration steam turbine exhaust heat recovery device according to claim 3, characterized in that: The L-shaped bracket (701) is composed of a connecting rod (705), a collar (706) and a connecting block (707); the connecting block (707) is fixedly connected to the limit block (201) via a screw rod (11); and the inner wall of the collar (706) is slidably connected to the central axis (702).

5. The high back pressure cogeneration steam turbine exhaust heat recovery device according to claim 1, characterized in that: The rotating assembly (8) comprises a square outer shell (801), a spherical impeller cover (802) is arranged inside the square outer shell (801), an impeller (803) is arranged inside the spherical impeller cover (802), the impeller (803) is fixedly connected to one end of a transmission rod (804) for providing rotational power, and the other end of the transmission rod (804) is rotatably connected to a power generation assembly (9).

6. The high back pressure cogeneration steam turbine exhaust heat recovery device according to claim 5, characterized in that: One end of the square shell (801) is fixedly connected to the connecting pipe (2), the other end of the square shell (801) is fixedly connected to one end of the extension pipe (12), and the other end of the extension pipe (12) is fixedly connected to the inside of the exchange component (10).

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