Excitation device for gas turbine

Abstract

The utility model discloses an excitation device for a gas turbine, which relates to the technical field of excitation devices and comprises a locking rod inserted into a protective door. The control assembly can control the opening and closing state and the opening angle of the protective door, that is, the control assembly can achieve positioning opening use of the protective door, so that the protective door cannot rotate freely after being opened, a worker can overhaul and maintain electrical components conveniently, use is convenient and flexible, and practicability is high. The problems that a safety door of an existing excitation device electrical component installation cabinet is not provided with a positioning structure, namely the safety door can rotate freely after being opened and cannot be positioned, maintenance operation of workers is easily hindered, an additional clamping block or a check block is needed to limit the safety door if the opening position of the safety door needs to be positioned, and use is troublesome are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of excitation devices, and more specifically, particularly relates to an excitation device for a gas turbine. Background Art

[0002] The excitation device of a gas turbine refers to an electrical control device in the excitation system of a synchronous generator that can control and regulate the excitation current in addition to the excitation power supply. The electrical components of the control device are generally installed in a cabinet for protection. At the same time, standardized installation also facilitates subsequent inspection and maintenance operations.

[0003] For the existing installation cabinet for electrical components of the excitation device, its safety door does not have a positioning structure, that is, the safety door can rotate freely after opening and cannot be positioned, which easily hinders the maintenance operation of the staff. If the opening position of the safety door needs to be positioned, an additional block or stopper is required to limit the safety door, which is troublesome to use, has poor flexibility and is not practical. Utility Model Content

[0004] The disclosed embodiment relates to an excitation device for a gas turbine, which has a control component. The control component can control the opening and closing state and the opening angle of the protective door, that is, the control component can realize the positioning and opening of the protective door, so that the protective door will not rotate freely after opening, which facilitates the inspection and maintenance operations of electrical components by the staff. The device is convenient and flexible to use and is extremely practical.

[0005] According to a first aspect of the present disclosure, there is provided an excitation device for a gas turbine, comprising a cabinet assembly, wherein the cabinet assembly comprises a protective door and an installation cabinet, wherein the protective door is rotatably connected to a side surface of the installation cabinet, and an electric control element is installed inside the installation cabinet; and a control assembly, wherein the control assembly comprises a control handle, a linkage gear and a locking rod, wherein the control handle is plugged into the side surface of the protective door, and the linkage gear is rotatably connected to the inside of the protective door, the locking rod is plugged into the inside of the protective door, and the linkage gear and one end top of the locking rod are connected via a rack transmission.

[0006] In at least some embodiments, a locking tension spring is provided inside the control handle, and two ends of the locking tension spring are respectively fixedly connected to the inside of the control handle and the inside of the linkage gear.

[0007] In at least some embodiments, a locking tooth groove is provided inside the protective door, and a locking gear is provided at one end of the control handle. Under the action of the locking tension spring, when the control handle is not pulled by external force, the locking gear is inserted into the locking tooth groove.

[0008] In at least some embodiments, a synchronization column with a regular polygonal cross section is provided on the side surface of the linkage gear, and a synchronization groove is provided inside the control handle, and the synchronization column is inserted into the synchronization groove.

[0009] In at least some embodiments, a positioning top spring is provided at the top of the locking rod, and two ends of the positioning top spring respectively abut against the top of the locking rod and the inside of the protective door.

[0010] In at least some embodiments, a positioning gear is provided inside the installation cabinet, and a positioning tooth groove is provided at the other end of the locking rod, and the positioning tooth groove is inserted into the outside of the gear teeth of the positioning gear under the action of the positioning top spring.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The control component can control the opening and closing state and the opening angle of the protective door, that is, the control component can realize the positioning and opening of the protective door, so that the protective door will not rotate freely after opening, which is convenient for the staff to inspect and maintain the electrical components. It is easy and flexible to use, which improves the flexibility, stability and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the control component of the utility model after being disassembled.

[0015] Figure 3 It is a structural schematic diagram of the utility model after the cabinet assembly is disassembled.

[0016] Figure 4 It is a schematic diagram of the internal structure when the protective door of the utility model is in a closed state.

[0017] Figure 5 The utility model pulls Figure 4 Schematic diagram of the internal structure behind the center control handle.

[0018] Figure 6 The utility model is a rotating Figure 5 Schematic diagram of the internal structure behind the center control handle.

[0019] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0020] 1. Cabinet assembly; 101. Protective door; 1011. Locking tooth groove; 102. Installation cabinet; 1021. Positioning gear;

[0021] 2. Control assembly; 201. Control handle; 2011. Locking tension spring; 2012. Locking gear; 2013. Synchronous groove; 202. Linkage gear; 2021. Synchronous column; 203. Locking rod; 2031. Positioning top spring; 2032. Positioning tooth groove. DETAILED DESCRIPTION

[0022] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples.

[0023] As attached Figure 1 To Attachment Figure 6 As shown:

[0024] Embodiment 1: The utility model provides an excitation device for a gas turbine, including a cabinet assembly 1, the cabinet assembly 1 includes a protective door 101 and an installation cabinet 102, the protective door 101 is rotatably connected to the side of the installation cabinet 102, and the interior of the installation cabinet 102 is installed with an electric control element of the excitation device; a control assembly 2, the control assembly 2 includes a control handle 201, a linkage gear 202 and a locking rod 203, the control handle 201 is plugged into the side of the protective door 101, and the linkage gear 202 is rotatably connected to the interior of the protective door 101, the locking rod 203 is plugged into the interior of the protective door 101, and the linkage gear 202 and the top of one end of the locking rod 203 are connected by a rack transmission.

[0025] In the disclosed embodiment, a positioning top spring 2031 is provided at the top of the locking rod 203, and the two ends of the positioning top spring 2031 respectively abut against the top of the locking rod 203 and the inside of the protective door 101, a positioning gear 1021 is provided inside the installation cabinet 102, and a positioning tooth groove 2032 is provided at the other end of the locking rod 203. Under the action of the positioning top spring 2031, the positioning tooth groove 2032 is inserted into the outside of the gear teeth of the positioning gear 1021. During use, the control component 2 can control the opening and closing state and the opening angle of the protective door 101. The positioning tooth groove 2032 is inserted into the outside of the positioning gear 1021, so that the protective door 101 cannot rotate outside the rotating shaft of the installation cabinet 102, so that the positioning of the use angle of the protective door 101 and the control of the opening and closing state can be achieved through different operations of the control handle 201.

[0026] In the embodiment of the present disclosure, a locking tension spring 2011 is provided inside the control handle 201, and the two ends of the locking tension spring 2011 are respectively fixedly connected to the inside of the control handle 201 and the inside of the linkage gear 202, and a locking tooth groove 1011 is provided inside the protective door 101, and a locking gear 2012 is provided at one end of the control handle 201. Under the action of the locking tension spring 2011, when the control handle 201 is not pulled by an external force, the locking gear 2012 is plugged into the inside of the locking tooth groove 1011. In use, when the control handle 201 is not pulled by an external force (in a reset state), the control assembly 2 is in a locked state, that is, the protective door 101 can stably maintain the current angle for use, so as to realize the protection of the protective door 101. 1. Positioning and control of the use angle. When the control handle 201 is in the reset state, the locking gear 2012 is inserted into the locking tooth groove 1011 under the action of the locking tension spring 2011. At this time, the control handle 201 cannot rotate by itself. Under the cooperation of the synchronization column 2021 and the synchronization groove 2013, the rotation state of the control handle 201 and the linkage gear 202 is always synchronized, so that the linkage gear 202 cannot rotate at this time. The linkage gear 202 limits the locking rod 203 through the rack so that the locking rod 203 cannot move and stably maintains the meshing locking relationship between the positioning tooth groove 2032 and the positioning gear 1021 gear teeth, so that the protective door 101 can stably maintain the current angle for use, and the use is stable.

[0027] In the disclosed embodiment, a synchronization column 2021 having a regular polygonal cross section is provided on the side of the linkage gear 202, and a synchronization groove 2013 is provided inside the control handle 201, and the synchronization column 2021 is inserted into the synchronization groove 2013. During use, when it is necessary to adjust the use angle or the opening and closing state of the protective door 101, it is only necessary to pull and turn the control handle 201. When the control handle 201 is pulled, the locking gear 2012 can be disengaged from the locking tooth groove 1011, and then the control handle 201 can be rotated freely. When the control handle 201 is rotated, the synchronization groove 2013 can drive the linkage gear 202 to rotate through the synchronization column 2021, and the linkage gear 202 can rotate when it rotates. The rack can drive the locking rod 203 to move to release the meshing locking relationship between the positioning tooth groove 2032 and the positioning gear 1021 teeth, so that the protective door 101 can be rotated and adjusted along the outside of the rotating shaft of the installation cabinet 102, and the locking rod 203 will compress the positioning top spring 2031 during the process. When the protective door 101 is adjusted to a suitable angle or opening and closing state, after releasing the control handle 201, the locking rod 203 will automatically reset and restore the function of positioning and locking the protective door 101 at the angle or opening and closing state under the action of the locking tension spring 2011, and the control handle 201 will also reset and restore the locking state of the entire device, which is convenient and flexible to use.

[0028] The specific usage and function of this embodiment are as follows:

[0029] In the present invention, the electric control element (electrical element) of the excitation device is installed inside the installation cabinet 102 for protection. The control component 2 can control the opening and closing state and the opening angle of the protection door 101. The positioning tooth groove 2032 is plugged into the outside of the positioning gear 1021, so that the protection door 101 cannot rotate outside the rotating shaft of the installation cabinet 102. Therefore, the positioning of the use angle of the protection door 101 and the control of the opening and closing state can be realized by different operations on the control handle 201. When the control handle 201 is not pulled by external force (in the reset state), the control component 2 is in a locked state, that is, the protection door 101 can stably maintain the current angle for use, so as to realize The protective door 101 uses angle positioning and control. When the control handle 201 is in the reset state, the locking gear 2012 is inserted into the locking tooth groove 1011 under the action of the locking tension spring 2011. At this time, the control handle 201 cannot rotate on its own. Under the cooperation of the synchronization column 2021 and the synchronization groove 2013, the rotation state of the control handle 201 and the linkage gear 202 is always synchronized, so that the linkage gear 202 cannot rotate at this time. The linkage gear 202 limits the locking rod 203 through the rack so that the locking rod 203 cannot move and stably maintains the bite locking relationship between the positioning tooth groove 2032 and the gear teeth of the positioning gear 1021, so that the protective door 101 can be stably When the electric control component needs to be inspected, maintained or replaced, the protective door 101 can be opened to a suitable angle to start the operation. When the use angle or the opening and closing state of the protective door 101 needs to be adjusted, it is only necessary to pull and turn the control handle 201. When the control handle 201 is pulled, the locking gear 2012 can be disengaged from the inside of the locking tooth groove 1011, and then the control handle 201 can be freely rotated. When the control handle 201 is rotated, the synchronous groove 2013 can drive the linkage gear 202 to rotate through the synchronous column 2021, and the linkage gear 202 can drive the locking rod 203 to move and release the positioning tooth groove 203 through the rack when rotating. 2 and the meshing locking relationship between the teeth of the positioning gear 1021, so that the protective door 101 can be rotated and adjusted along the outside of the rotating shaft of the installation cabinet 102, and the locking rod 203 will compress the positioning top spring 2031 during the process. When the protective door 101 is adjusted to a suitable angle or open and close state, after the control handle 201 is released, the locking rod 203 will automatically reset and restore the function of positioning and locking the protective door 101 at the angle or open and close state under the action of the locking tension spring 2011. Under the action of the locking tension spring 2011, the control handle 201 will also reset and restore the locking state of the entire device. After the overhaul, maintenance or replacement of the electronic control components is completed, the protective door 101 can be closed.

[0030] In this article, there are a few points to note:

[0031] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0032] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0033] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A gas turbine excitation device, characterized in that: include: A cabinet assembly, the cabinet assembly includes a protective door and an installation cabinet, the protective door is rotatably connected to the side of the installation cabinet, and an electric control component is installed inside the installation cabinet; a control assembly, the control assembly includes a control handle, a linkage gear and a locking rod, the control handle is plugged into the side of the protective door, and the linkage gear is rotatably connected to the inside of the protective door, the locking rod is plugged into the inside of the protective door, and the linkage gear and one end top of the locking rod are connected through a rack transmission.

2. A gas turbine excitation device according to claim 1, characterized in that: A locking tension spring is arranged inside the control handle, and two ends of the locking tension spring are respectively fixedly connected to the inside of the control handle and the inside of the linkage gear.

3. A gas turbine excitation device as claimed in claim 2, characterized in that: A locking tooth groove is provided inside the protective door, and a locking gear is provided at one end of the control handle. Under the action of the locking tension spring, when the control handle is not pulled by external force, the locking gear is inserted into the locking tooth groove.

4. The gas turbine excitation device according to claim 3, characterized in that: A synchronous column with a regular polygonal cross section is arranged on the side surface of the linkage gear, and a synchronous groove is arranged inside the control handle, and the synchronous column is inserted into the synchronous groove.

5. The gas turbine excitation device according to claim 4, characterized in that: A positioning top spring is arranged on the top of the locking rod, and two ends of the positioning top spring respectively abut against the top of the locking rod and the inside of the protective door.

6. The gas turbine excitation device according to claim 5, characterized in that: A positioning gear is arranged inside the installation cabinet, and a positioning tooth groove is arranged at the other end of the locking rod. Under the action of the positioning top spring, the positioning tooth groove is inserted into the outside of the gear teeth of the positioning gear.

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