Gas turbine generator excitation carbon brush length indication and low-position alarm device
By designing the carbon brush holder, insulation layer, low-level alarm components and auxiliary components in the gas turbine generator, the problem of the carbon brush being unable to move smoothly when worn is solved, and timely monitoring and alarming of carbon brush wear is achieved, avoiding the The generator shutdown accident simplifies the operation process.
Patent Information
- Application Number
- CN202420141720.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-19
AI Technical Summary
The excitation carbon brush of the gas generator may not move smoothly downward when worn, resulting in inaccurate monitoring results of the low-level alarm component and may lead to generator shutdown.
A device including a carbon brush holder, an insulating layer, a low-level alarm component and an auxiliary component is designed. The insulating probe and position slider are used to determine the position of the carbon brush. When the carbon brush reaches the limit value, it touches the position switch to realize the alarm, and passes the The length indicator provides wear information, and the auxiliary components move the carbon brush downwards through the push rod and pressing handle to avoid wear and stagnation.
It realizes timely alarm and monitoring when the carbon brush is worn, avoids the close integration problem between the carbon brush and the collector ring, reduces the risk of generator shutdown, and simplifies operation to ensure smooth downward movement of the carbon brush.
Smart Images
Figure CN222169554U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of alarm devices, in particular to a low-position alarm device for indicating the length of an excitation carbon brush of a combustion engine generator. Background Art
[0002] A combustion engine generator refers to an internal combustion engine generator set, which is a device that generates electricity by driving a generator through an internal combustion engine. The basic working principle of an internal combustion engine generator is to use an internal combustion engine to burn fuel (such as gasoline, diesel or natural gas) to produce high-temperature and high-pressure gas, and then drive the generator rotor to rotate through piston movement, ultimately generating electricity.
[0003] The excitation carbon brush of the gas turbine generator is a key component of the excitation system. The main task of the excitation system is to generate the required electromagnetic field for the generator to ensure normal power generation operation. The carbon brush plays the role of conducting and transferring current in the excitation system. The excitation carbon brush is usually made of carbon material with good conductive properties.
[0004] However, when the gas turbine generator is in use, there will be friction between the excitation carbon brush and the generator rotor, which will cause wear on the surface of the carbon brush. In the prior art, a low-level alarm device is set inside the gas turbine generator set to monitor the length of the carbon brush. However, there is a large friction between the carbon brush and the carbon brush holder, and the carbon brush may not be able to move downward smoothly when it is worn, causing the carbon brush to stagnate in place while being worn, which will eventually affect the monitoring result of the low-level alarm component.
[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content
[0006] 1. Technical issues to be resolved
[0007] In view of the deficiencies in the prior art, the utility model provides a gas turbine generator excitation carbon brush length indication and low-level alarm device, which has the purpose of generating an alarm when the carbon brush is worn and moves downward to a limit value, thereby solving the problem that the carbon brush may not be able to move downward smoothly due to wear.
[0008] (II) Technical solution
[0009] In order to achieve the above purpose of generating an alarm when the wear drops to the limit value, the specific technical solution adopted by the utility model is as follows:
[0010] A gas turbine generator excitation carbon brush length indication and low-position alarm device comprises a carbon brush holder, a carbon brush is arranged inside the carbon brush holder, an insulating layer is arranged between the carbon brush and the carbon brush holder, a brush holder upper plate is arranged at the top of the carbon brush holder, a low-position alarm component is arranged inside the brush holder upper plate and through the carbon brush holder, a position switch is arranged outside the carbon brush holder, and two groups of auxiliary components are arranged on one side of the position switch.
[0011] Furthermore, in order to use the insulating probe to judge the position of the carbon brush when it moves downward due to wear, and then when the carbon brush reaches the limit value, the position slide plate touches the position switch to realize the alarm, and at the same time, the carbon brush wear information can be provided in time through the length indicator ruler to indicate, so as to avoid negligence and failure to replace it in time due to severe wear, resulting in the failure of the carbon brush and the collector ring to be tightly combined, and the occurrence of ignition and burning of the collector ring and the carbon brush holder, resulting in the shutdown of the generator and operating accidents. The low-position alarm assembly includes a probe cover that passes through the top of the upper plate of the brush holder, and the bottom end of the probe cover extends to the interior of the carbon brush holder, and an insulating probe is arranged inside the probe cover; a length indicator ruler is arranged on the outside of the probe cover, and the outer cover of the probe cover is provided with a compression spring and a position slide plate, and a limit plate is arranged on the top of the position slide plate.
[0012] Furthermore, in order to completely insert the position slide into the interior of the carbon brush holder to avoid tilting and reduce the probability of inaccurate detection of the carbon brush wear position, the position slide is a conical structure, and the diameter of the limit plate is the same as the inner diameter of the carbon brush holder.
[0013] Furthermore, in order to enable the staff to regularly use the pressing handle to drive the push rod to press the carbon brush downward under the action of thrust, and avoid the situation where the carbon brush is worn and cannot move downward smoothly due to excessive friction between the carbon brush and the carbon brush holder, causing the carbon brush to stagnate in place while being worn, which will eventually affect the monitoring result of the low-level alarm component, the auxiliary component includes a toggle groove opened on the outside of the carbon brush holder, two groups of fixed blocks are arranged at the top of the toggle groove, a connecting rod is arranged at the top of the fixed block, and a connecting shaft is arranged between the two groups of connecting rods; a connecting block is arranged in the middle of the connecting shaft, and the connecting block is installed between the two groups of connecting rods, a pressing handle is arranged at the top of the connecting block, a connecting rod is arranged on one side of the pressing handle, and a push rod is arranged in the middle of the connecting rod.
[0014] (III) Beneficial effects
[0015] Compared with the prior art, the utility model provides a gas turbine generator excitation carbon brush length indication and low position alarm device, which has the following beneficial effects:
[0016] (1) The utility model has a simple structure and is easy to operate. By arranging auxiliary components and low-level alarm components, it is not only possible to monitor the wear of the carbon brush and ensure that an alarm is triggered when the wear moves down to a limit value, but also the push rod can be used to regularly push the carbon brush downward under the action of a thrust force using a pressing handle to avoid the situation where the carbon brush is worn and stagnates in place and cannot move downward.
[0017] (2) The utility model sets a low-position alarm component so that when the carbon brush moves downward due to wear, an insulating probe is used to determine the position of the carbon brush. Then, when the carbon brush reaches the limit value, the position slide plate touches the position switch to achieve the purpose of alarm. At the same time, the length indicator can be used to indicate and provide timely information on the wear of the carbon brush, thereby avoiding the situation where the carbon brush and the collector ring cannot be tightly fitted due to negligence and severe wear, resulting in ignition and burning of the collector ring and the carbon brush holder, causing the generator to shut down and cause an operation accident.
[0018] (3) The utility model provides an auxiliary component so that the staff can regularly use the pressing handle to drive the push rod to press the carbon brush downward under the action of the thrust, thereby avoiding the situation where the carbon brush is worn and cannot move downward smoothly due to excessive friction between the carbon brush and the carbon brush holder, causing the carbon brush to stagnate in place while being worn, which will eventually affect the monitoring result of the low-level alarm component. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 It is a structural schematic diagram of a device for indicating the length of an excitation carbon brush of a combustion engine generator and for providing a low-level alarm according to an embodiment of the utility model;
[0021] Figure 2 It is a cross-sectional view of a device for indicating the length of an excitation carbon brush of a combustion engine generator and for providing a low-level alarm according to an embodiment of the utility model;
[0022] Figure 3 yes Figure 2 A partial enlarged view of the middle A;
[0023] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle.
[0024] In the figure:
[0025] 1. Carbon brush holder; 2. Carbon brush; 3. Insulating layer; 4. Upper plate of brush holder; 5. Low position alarm assembly; 501. Probe cover; 502. Insulating probe; 503. Length indicator; 504. Compression spring; 505. Position slide plate; 506. Limit plate; 6. Position switch; 7. Auxiliary assembly; 701. Toggle slot; 702. Fixed block; 703. Connecting rod; 704. Connecting shaft; 705. Connecting block; 706. Pressing handle; 707. Connecting rod; 708. Push rod. DETAILED DESCRIPTION
[0026] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.
[0027] According to an embodiment of the utility model, a device for indicating the length of an excitation carbon brush of a combustion engine generator and for providing a low-level alarm is provided.
[0028] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-Figure 4 As shown, the excitation carbon brush length indication and low-level alarm device for a gas turbine generator according to an embodiment of the utility model includes a carbon brush holder 1, a carbon brush 2 is arranged inside the carbon brush holder 1, an insulating layer 3 is arranged between the carbon brush 2 and the carbon brush holder 1, and the specific insulating layer 3 is to prevent the excitation current from directly flowing through the carbon brush holder 1, a brush holder upper plate 4 is arranged on the top of the carbon brush holder 1, a low-level alarm component 5 is arranged inside the brush holder upper plate 4 and through the carbon brush holder 1, a position switch 6 is arranged on the outside of the carbon brush holder 1, and two groups of auxiliary components 7 are arranged on one side of the position switch 6.
[0029] In one embodiment, for the above-mentioned low-level alarm component 5, the low-level alarm component 5 includes a probe cover 501 that passes through the top of the brush holder upper plate 4, and the bottom end of the probe cover 501 extends to the inside of the carbon brush holder 1, and an insulating probe 502 is arranged inside the probe cover 501; a length indicator 503 is arranged on the outside of the probe cover 501, and a compression spring 504 and a position slide plate 505 are arranged on the outer sleeve of the probe cover 501, and a limit plate 506 is arranged on the top of the position slide plate 505, so that when the carbon brush 2 moves downward due to wear, the insulating probe 502 is used to judge the position of the carbon brush 2, and then when the carbon brush 2 reaches the limit value, the position slide plate 505 touches the position switch 6 to achieve the purpose of alarm, and at the same time, the length indicator 503 can be used to indicate and provide timely information on the wear of the carbon brush, so as to avoid negligence in timely replacement and severe wear resulting in the inability to tightly fit between the carbon brush 2 and the collector ring, and the occurrence of ignition and burning of the collector ring and the carbon brush holder 1, resulting in the shutdown of the generator and an operation accident.
[0030] The working principle of the low-position alarm component 5 is as follows: the carbon brush holder 1 is fixed on the carbon brush holder, the insulating probe 502 is fixed on the top of the brush holder upper plate 4, and the insulating probe 502 is fixed to the position slide plate 505. The insulating probe 502 is pressed on the carbon brush 2 by the pressure of the compression spring 504. As the carbon brush 2 is worn after use, the length of the carbon brush 2 becomes shorter, thereby driving the insulating probe 502 to move downward with the carbon brush 2. When the limit value of the carbon brush 2 is reached, the position slide plate 505 is just pressed on the position switch 6, so that the normally open contact is closed, the conductive circuit is turned on to form an alarm, and the alarm is sent to remind the staff to replace the carbon brush 2.
[0031] In one embodiment, for the above-mentioned position slide plate 505, the position slide plate 505 is a conical structure, and the diameter of the limit plate 506 is the same as the inner diameter of the carbon brush holder 1, so that the position slide plate 505 can be completely inserted into the interior of the carbon brush holder 1 to avoid tilting, thereby reducing the probability of inaccurate wear position detection of the carbon brush 2.
[0032] In one embodiment, for the above-mentioned auxiliary component 7, the auxiliary component 7 includes a toggle groove 701 opened on the outer side of the carbon brush holder 1, two groups of fixed blocks 702 are arranged at the top of the toggle groove 701, and connecting rods 703 are arranged at the top of the fixed blocks 702, and connecting shafts 704 are arranged between the two groups of connecting rods 703; a connecting block 705 is arranged in the middle of the connecting shaft 704, and the connecting block 705 is installed between the two groups of connecting rods 703, a pressing handle 706 is arranged at the top of the connecting block 705, a connecting rod 707 is arranged on one side of the pressing handle 706, and a push rod 708 is arranged in the middle of the connecting rod 707, so that the staff can regularly use the pressing handle 706 to drive the push rod 708 to press the carbon brush 2 downward under the action of thrust, so as to avoid the situation where the carbon brush 2 is worn and cannot move downward smoothly due to excessive friction between the carbon brush 2 and the carbon brush holder 1, causing the carbon brush 2 to stagnate in place while being worn, which will eventually affect the monitoring result of the low-level alarm component 5.
[0033] The working principle of the auxiliary component 7 is as follows: the staff manually pulls the pressing handle 706, and then the pressing handle 706 moves up and down inside the toggle slot 701 under the action of the connecting block 705 and the connecting shaft 704, and in the process of moving down, the push rod 708 on one side of the pressing handle 706 is driven to rise, and after rising, the pressing handle 706 is moved up and the push rod 708 is moved down. As the push rod 708 moves downward, the carbon brush 2 is moved downward under the action of the thrust.
[0034] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.
[0035] In actual application, the staff fixes the entire device on the carbon brush holder with screws. During the use of the gas turbine generator, the low-level alarm component 5 monitors the length of the carbon brush 2 and issues an alarm when the limit value is reached, sending a reminder to the staff to facilitate the replacement of the carbon brush 2. At the same time, during the monitoring and alarm process, the friction between the carbon brush 2 and the carbon brush holder 1 may be too large, which may cause the carbon brush 2 to wear and may not be able to move downward smoothly, resulting in errors in the monitoring results. In order to avoid this situation, the staff uses the auxiliary component 7 to manually move the carbon brush 2 downward until it contacts the bottom end surface, so as to prevent the carbon brush 2 from stagnate in place while being worn, affecting the length monitoring results.
[0036] In summary, with the help of the above technical solution of the utility model, the utility model has a simple structure and convenient operation. By setting the auxiliary component 7 and the low-position alarm component 5, it can not only monitor the wear of the carbon brush 2, and ensure that an alarm is issued when the wear moves down to the limit value, but also regularly use the pressing handle 706 to drive the push rod 708 to press the carbon brush 2 downward under the thrust to avoid the situation where the carbon brush 2 is worn and stagnated in place and cannot move downward. The utility model sets the low-position alarm component 5 so that when the carbon brush 2 moves downward after wear, the insulating probe 502 is used to judge the position of the carbon brush 2, and then when the carbon brush 2 reaches the limit value, the position slide plate 505 touches the position switch 6 to achieve the purpose of alarm, and at the same time, the length indicator 503 can be used to indicate and provide timely information on the wear of the carbon brush, so as to avoid the accident that the carbon brush 2 and the collector ring cannot be tightly combined due to negligence and failure to replace in time, and the collector ring and the carbon brush holder 1 are burned by ignition, resulting in the shutdown of the generator and the operation accident. The utility model provides an auxiliary component 7 so that the staff can regularly use the pressing handle 706 to drive the push rod 708 to press the carbon brush 2 downward under the action of the thrust, so as to avoid the situation where the carbon brush 2 is worn and cannot move downward smoothly due to excessive friction between the carbon brush 2 and the carbon brush holder 1, causing the carbon brush 2 to stagnate in place while being worn, which will eventually affect the monitoring result of the low-level alarm component 5.
[0037] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.
[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A combustion engine generator excitation carbon brush length indication and low position alarm device, comprising a carbon brush holder (1), wherein a carbon brush (2) is arranged inside the carbon brush holder (1), It is characterized in that An insulating layer (3) is provided between the carbon brush (2) and the carbon brush holder (1); a brush holder upper plate (4) is provided at the top of the carbon brush holder (1); a low position alarm component (5) is provided inside the brush holder upper plate (4) and passes through the carbon brush holder (1); a position switch (6) is provided on the outside of the carbon brush holder (1); and two groups of auxiliary components (7) are provided on one side of the position switch (6).
2. A gas turbine generator excitation carbon brush length indication and low position alarm device according to claim 1, It is characterized in that The low-level alarm assembly (5) comprises a probe cover (501) penetrating the top of the brush holder upper plate (4), and the bottom end of the probe cover (501) extends to the interior of the carbon brush holder (1), and an insulating probe (502) is arranged inside the probe cover (501).
3. A gas turbine generator excitation carbon brush length indication and low position alarm device according to claim 2, It is characterized in that The outer side of the probe cover (501) is provided with a length indicator (503), the outer side of the probe cover (501) is provided with a compression spring (504) and a position slide plate (505), and the top end of the position slide plate (505) is provided with a limit plate (506).
4. A gas turbine generator excitation carbon brush length indication and low position alarm device according to claim 3, It is characterized in that The position sliding plate (505) is a conical structure, and the diameter of the limiting plate (506) is the same as the inner diameter of the carbon brush holder (1).
5. A gas turbine generator excitation carbon brush length indication and low position alarm device according to claim 1, It is characterized in that The auxiliary component (7) comprises a toggle groove (701) opened on the outside of the carbon brush holder (1), two groups of fixing blocks (702) are arranged at the top of the toggle groove (701), connecting rods (703) are arranged at the top of the fixing blocks (702), and a connecting shaft (704) is arranged between the two groups of connecting rods (703).
6. A combustion engine generator excitation carbon brush length indication and low position alarm device according to claim 5, It is characterized in that A connecting block (705) is provided in the middle of the connecting shaft (704), and the connecting block (705) is installed between the two groups of connecting rods (703). A pressing handle (706) is provided at the top of the connecting block (705), a connecting rod (707) is provided on one side of the pressing handle (706), and a push rod (708) is provided in the middle of the connecting rod (707).