CN210576946U - Novel intelligent carbon brush device - Google Patents
Novel intelligent carbon brush device Download PDFInfo
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- CN210576946U CN210576946U CN201921960214.8U CN201921960214U CN210576946U CN 210576946 U CN210576946 U CN 210576946U CN 201921960214 U CN201921960214 U CN 201921960214U CN 210576946 U CN210576946 U CN 210576946U
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Abstract
The utility model relates to a novel intelligent carbon brush device, which comprises a brush box, wherein a plurality of carbon brush chambers are arranged in the brush box, carbon brushes are arranged in the carbon brush chambers, and the rear ends of the carbon brushes are provided with thrusters; a metal polar plate is attached to the inner wall of the carbon brush chamber, and an insulating medium is arranged between the polar plate and the carbon brush to form a capacitor; a temperature sensor is arranged on the wall of the carbon brush chamber, and a current intensity sensor is arranged at the braid of the carbon brush; the capacitance signal of the polar plate, the temperature signal of the temperature sensor and the current intensity signal of the current intensity sensor are transmitted to the signal collector in a wireless or wired transmission mode for collection and processing, and then transmitted to the monitoring terminal or the alarm device in a wireless transmission mode. The utility model discloses can realize functions such as real-time supervision, signal acquisition, signal wireless transmission of carbon brush wearing and tearing volume, carbon brush temperature and carbon brush electric current, promote carbon brush device's practicality and reliability.
Description
Technical Field
The utility model relates to a safety monitoring technical field especially relates to a novel intelligence carbon brush device, can be used to the hidden utmost point formula motor carbon brush.
Background
The existing generator generally adopts a static excitation system, wherein a plurality of carbon brushes are required to be arranged so as to uniformly conduct excitation current, and in order to ensure that the carbon brushes are uniformly arranged and are fixed and reliable, a combined brush box is mostly adopted to fix 3-4 carbon brushes in the brush box, and then the brush box is symmetrically assembled on a brush frame along the circumferential direction. When the unit is in the normal operation process, because the collecting ring is in high-speed rotary motion all the time, and brush box (carbon brush) is in quiescent condition, therefore the carbon brush is in the operating mode of continuous wearing and tearing all the time, can produce high temperature because of continuous wearing and overheating simultaneously, and can lead to every carbon brush wearing and tearing volume inconsistent because collecting ring vibration, also can lead to phenomenon such as current distribution inhomogeneous or contact surface striking sparks because the carbon brush is well with collecting ring contact. At present, traditional carbon brush maintenance is generally realized by the mode of manual regular inspection, with the help of pincerlike ampere meters, tools such as hand-held type infrared imager detect the carbon brush running state, because manual detection operation wastes time and energy and has certain risk, the data volume of manual collection is limited, have very big randomness, can't realize the real time monitoring to carbon brush electrical physical parameter, manual detection is very easy simultaneously because observe not carefully cause the trouble to omit, consequently to the long-term reliable operation of unit, the manual inspection can't realize carbon brush on-line monitoring and early warning of trouble, be difficult to in time handle and get rid of the potential safety hazard, bring very big potential safety hazard for the unit operation.
The invention discloses an invention patent with application publication number CN108879273A named as a temperature current and abrasion on-line monitor of a carbon brush of a thermal generator on 23.11.2018 by the national intellectual property office, and discloses an on-line monitor of the temperature current and the abrasion of the carbon brush of the thermal generator, which comprises a current intensity sensor arranged on a brush braid of each carbon brush and used for acquiring the current intensity of the brush braid of each carbon brush; the current intensity sensor is connected with the data collection processor through a current signal wire; arranging a temperature sensor corresponding to each carbon brush, and transmitting and inputting a temperature signal at the front end of the carbon brush and calculating; arranging a wear monitoring line in each carbon brush, wherein the wear monitoring line is insulated from the carbon brush; the distance from the front end of the wear monitoring line to the front end of the carbon brush is smaller than the distance from the front end of the braid to the front end of the carbon brush; the abrasion monitoring line is connected with the data collection processor through an abrasion signal line, and the data collection processor is connected with the data receiving and alarming device in a wired connection or wireless sending mode. However, it has the following problems: the carbon brush abrasion line needs to be pre-buried in advance and specially customized, the structure is complex, the use cost is high, and if the abrasion line and the carbon brush are poorly insulated, a detection signal cannot be transmitted or an abrasion detection unit is burnt; each carbon brush abrasion line needs to be led out independently through an abrasion signal line, so that more cables are easy to cause collision and abrasion damage, the operating space at the position of a carbon brush collecting ring device is extremely limited, the workload of installing and wiring is large and the operation is difficult, and the carbon brushes need to be re-wired when being maintained and replaced, so that poor wiring is easy to cause by misoperation of personnel; the temperature detection unit adopts a temperature sensor directly contacted with the carbon brush, when the collecting ring runs at a high speed, the carbon brush can vibrate continuously, the contact temperature sensor and the carbon brush can vibrate and rub, and the sensor is possibly damaged, and the accuracy and the reliability of temperature measurement need to be studied.
SUMMERY OF THE UTILITY MODEL
To the not enough and problem that above-mentioned prior art exists, the utility model discloses the technical problem that will solve designs a novel intelligent carbon brush device, can be used to the hidden utmost point formula motor carbon brush, integrated on-line monitoring system has, through the improvement design of brush box structure and function, adopt high integration, small and exquisite succinct, the mature reliable functional module realizes the carbon brush temperature to the motor, the control of wearing and tearing volume and electric current isoparametric, complicated with the brush box structure in order to solve the carbon brush, the wiring is more, the installation work volume is big, the difficult operation, it is relatively poor to maintain the change convenience, detecting element reliability scheduling problem.
The utility model adopts the technical scheme as follows:
a novel intelligent carbon brush device comprises a brush box, wherein a plurality of carbon brush chambers are arranged in the brush box, carbon brushes are arranged in the carbon brush chambers, and the rear ends of the carbon brushes are provided with pushing devices; a metal polar plate is attached to the inner wall of the carbon brush chamber, and an insulating medium is arranged between the polar plate and the carbon brush to form a capacitor; a temperature sensor is arranged on the wall of the carbon brush chamber, and a current intensity sensor is arranged at the braid of the carbon brush; the capacitance signal of the polar plate, the temperature signal of the temperature sensor and the current intensity signal of the current intensity sensor are collected and processed and then transmitted to a monitoring terminal or an alarm device.
Furthermore, the carbon brush device also comprises a handle, the handle is connected with an assembly shaft, a support and a signal collector are sleeved on the assembly shaft, and the brush box is assembled on the support; one end of the assembling shaft is provided with a convex shoulder, the other end of the assembling shaft is in threaded connection with the handle, and the support and the signal collector are clamped and fixed between the convex shoulder and the handle.
Furthermore, a shoulder pole spring and a carbon brush retaining plate are sequentially arranged at the bottom of the support, a flanging is arranged at the front end of the carbon brush retaining plate and buckled at the front end of the brush box, and the carbon brush can be retained in the brush box.
Furthermore, the capacitance signal of the polar plate, the temperature signal of the temperature sensor and the current intensity signal of the current intensity sensor are transmitted to the signal collector in a wireless or wired transmission mode for collection and processing, and then transmitted to the monitoring terminal or the alarm device in a wireless or wired transmission mode. Wireless signal transmission and data processing are prior art and are not described in detail.
Furthermore, an electrode plate groove is formed in the inner wall of the carbon brush chamber, a capacitor bottom plate is arranged in the electrode plate groove, and the electrode plate is fixed on the capacitor bottom plate; the pushing device is a coil spring, the outer end part of the coil spring is fixed on the capacitor bottom plate, and the rear end of the carbon brush abuts against the coil spring to enable the coil spring to be unfolded when the carbon brush is installed.
Furthermore, a through hole is formed in the wall of the carbon brush chamber, which is close to the front end of the carbon brush, the temperature sensor is a surface-mounted pocket-sized temperature sensor, the temperature sensor is connected with a flexible heat conducting element, and the flexible heat conducting element penetrates through the through hole to be in contact with the carbon brush so as to conduct the temperature of the carbon brush to the temperature sensor.
Further, the carbon brush is arranged opposite to the pole, and the relative area of the carbon brush is gradually reduced in the forward sliding process.
Furthermore, the polar plate is plated with an insulating material, and the insulating material is used as an insulating medium of the capacitor.
The utility model discloses a carbon brush wearing and tearing are measured to the electric capacity principle, only need offer the polar plate groove at every carbon brush room of former brush box, place the metal polar plate who has plated insulating material in the polar plate groove, can form the condenser between carbon brush and polar plate. Along with the abrasion of the carbon brush, the relative area between the carbon brush and the polar plate is changed, the size of the capacitor is changed, and an external monitoring terminal or an alarm device can judge the abrasion degree of the carbon brush according to the capacitance signal. The carbon brush abrasion loss signals in the carbon brush chambers can be led out to the signal collector through a signal wire in a concentrated mode, and then are transmitted into the monitoring terminal or the alarm device through a wireless transmission mode, so that the number of cables is reduced, and wiring is simpler and more reliable. The whole wear monitoring unit is higher in integration level, simpler in structure, free of changing a carbon brush structure, very suitable for a brush box structure with compact space, controllable in measurement precision, capable of eliminating interference of environmental factors, easy to install, long in service life and stronger in practicability.
The utility model discloses a pocket-size type temperature sensor of SMD measures the carbon brush temperature, and this sensor adopts sturdy and durable's lamination insulation structure for small film type thermal resistance or thermocouple element, is applicable to extreme environment, installs it near carbon brush front end corresponding position, conducts the carbon brush temperature to temperature sensor through flexible heat conduction element, and temperature signal transmits signal collector with wireless sending mode again. The sensor can be customized in shape and size, is convenient to install, does not need to change the brush box and the carbon brush structure, is high in measurement precision and rapid in temperature measurement response, can detect the highest temperature point of the carbon brush, and reduces the installation number of the carbon brush temperature sensors. Meanwhile, due to the arrangement of the flexible heat conducting element, direct contact between the sensor and the carbon brush is avoided, and the accuracy and the reliability of temperature measurement are guaranteed.
The utility model discloses a current intensity sensor measures the carbon brush electric current, installs the current intensity sensor component of semicircular in the brush braid department of every carbon brush, and the sticky or the mode of buckle of current intensity sensor accessible is reliably fixed, and sensor measuring range is wide, and tracking speed is fast, and the linearity is high, and the response is rapid, but the arbitrary waveform current of simultaneous measurement, and the practicality is strong, and monitor terminal or alarm device are sent to the mode of the wireless transmission of the current intensity signal accessible of every carbon brush.
The utility model discloses in, keep the basic structure of traditional brush box and carbon brush, avoid complicated structural design to change, carry out non-invasive installation on the primary structure, change with the help of the small structure of brush box, adopt more small and exquisite, ripe reliable, integrate the higher functional components and parts of degree, can realize the on-line monitoring of carbon brush wearing and tearing, temperature and electric current. On the premise of ensuring the monitoring effect, the wiring simplification of the carbon brush device on the structure can be realized through the integration of the signal wire and the application of a wireless transmission mode, and the carbon brush device is particularly suitable for installation at a collecting ring brush holder with limited space. The utility model discloses a reasonable structural design, mounted position's preferred and monitoring unit's integrated design make carbon brush device have more economic nature, convenience and practicality in the actual engineering application.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the assembly of the handle and the assembly shaft;
FIG. 3 is an assembled view of the handle, the assembly shaft, the signal collector and the support;
FIG. 4 is a schematic view of the structure of the brush box;
FIG. 5 is a schematic view of the assembly of the capacitor bottom plate, coil spring and plates;
fig. 6 is an assembly view of the brush box, the carbon brush holder plate, and the shoulder pole spring.
Description of reference numerals:
1-brush box, 2-carbon brush, 3-coil spring, 4-signal collector, 5-handle, 6-support, 7-shoulder pole spring, 8-carbon brush holding plate, 9-capacitor bottom plate, 10-pole plate, 11-temperature sensor, 12-heat conducting element, 13-assembly shaft and 14-pole plate groove.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The utility model relates to a novel intelligent carbon brush device, which comprises a brush box, wherein a plurality of carbon brush chambers are arranged in the brush box, carbon brushes are arranged in the carbon brush chambers, and the rear ends of the carbon brushes are provided with thrusters; a metal polar plate is attached to the inner wall of the carbon brush chamber, and an insulating medium is arranged between the polar plate and the carbon brush to form a capacitor; a temperature sensor is arranged on the wall of the carbon brush chamber, and a current intensity sensor is arranged at the braid of the carbon brush; the capacitance signal of the polar plate, the temperature signal of the temperature sensor and the current intensity signal of the current intensity sensor are transmitted to the signal collector in a wireless or wired transmission mode for collection and processing, and then transmitted to the monitoring terminal or the alarm device in a wireless transmission mode.
The utility model discloses an above structural improvement, functional module's installation and wireless signal transmission's application can realize functions such as real-time supervision, signal acquisition, signal wireless transmission of carbon brush wearing and tearing volume, carbon brush temperature and carbon brush electric current, promote carbon brush device's practicality and reliability to simplify attached equipment and circuit, facilitate for later stage operation maintenance, also establish the basis for the unit realizes intellectuality, unmanned on duty.
Example 1:
referring to fig. 1 to 6, the utility model relates to a novel intelligent carbon brush device, which comprises a brush box 1 and a handle 5, wherein four carbon brush chambers are separated from the brush box 1, and a carbon brush 2 is arranged in each carbon brush chamber; the handle 5 is connected with an assembly shaft 13, the assembly shaft 13 is sleeved with a support 6 and a signal collector 4, and the brush box 1 is assembled on the support 6; one end of the assembling shaft 13 is provided with a convex shoulder, the other end of the assembling shaft is in threaded connection with the handle 5, and the support 6 and the signal collector 4 are clamped and fixed between the convex shoulder and the handle 5; the bottom of the support 6 is sequentially provided with a shoulder pole spring 7 and a carbon brush retaining plate 8, the front end of the carbon brush retaining plate 8 is provided with a flanging, and the flanging is buckled at the front end of the brush box 1 and can retain the carbon brush 2 in the brush box 1.
The inner wall of the carbon brush chamber is provided with an electrode plate groove 14, a capacitor bottom plate 9 is arranged in the electrode plate groove 14, a metal electrode plate 10 is attached to the capacitor bottom plate 9, the surface of the electrode plate 10 is plated with an insulating material, and a capacitor is formed between the electrode plate 10 and the carbon brush 2. The coil spring 3 is arranged on the capacitor bottom plate 9 and close to the front end of the carbon brush 2, and because the outer end part of the coil spring 3 is fixed on the capacitor bottom plate 9, the rear end of the carbon brush 2 props against the coil spring 3 to expand the coil spring 3 when the carbon brush 2 is installed, and the effect of pushing the carbon brush 2 can be achieved by the resilience force of the coil spring 3. When the carbon brush 2 is used, the coil spring 3 pushes the carbon brush 2 to move forwards along with the abrasion of the carbon brush 2, so that the carbon brush 2 is well electrically connected with the collecting ring; meanwhile, the relative area between the carbon brush 2 and the polar plate 10 changes, the size of the capacitor changes accordingly, and an external monitoring terminal or an alarm device can judge the wear degree of the carbon brush 2 according to the capacitor signal. Meanwhile, the abrasion loss signals of the carbon brush 2 in each carbon brush chamber are led out to the signal collector 4 through a signal wire in a concentrated mode and then transmitted to the alarm device through the wireless signal transmission module, the number of cables can be reduced, and wiring can be simpler and more reliable.
A surface-mounted pocket-sized temperature sensor 11 is arranged on the outer wall of the carbon brush chamber, and temperature signals are transmitted to the signal collector 4 in a wireless transmission mode. The temperature sensor 11 is further connected with a flexible heat conducting element 12, a through hole is formed in the wall of the carbon brush chamber, which is close to the front end of the carbon brush 2, and the flexible heat conducting element 12 penetrates through the through hole to be in contact with the carbon brush 2, so that the temperature of the carbon brush 2 can be conducted to the temperature sensor 11. The surface-mounted pocket-sized temperature sensor is a tiny film type thermal resistor or thermocouple element, adopts a firm and durable laminated insulation structure, and is suitable for extreme environments. The shape and the size of the temperature sensor 11 are customized according to the shape and the size of the brush box, the installation is convenient, the structures of the brush box 1 and the carbon brush 2 are not required to be changed, the measurement precision is high, the temperature measurement response is rapid, and the highest temperature point of the carbon brush 2 can be detected. Meanwhile, the flexible heat conducting element 12 is arranged, so that the temperature sensor 11 is prevented from being in direct contact with the carbon brush 2, and the accuracy and the reliability of temperature measurement are guaranteed.
The brush braid of the carbon brush 2 is provided with a semicircular Hall current intensity sensor in a buckling manner, and a current signal is transmitted to the signal collector 4 in a wireless transmission manner. The Hall current intensity sensor has the advantages of wide measuring range, high tracking speed, high linearity, quick response, capability of measuring any waveform current at the same time and strong practicability.
The capacitance signal of the polar plate 10, the temperature signal of the temperature sensor 11 and the current intensity signal of the current intensity sensor are transmitted to the signal collector 4 in a wireless or wired transmission mode for collection and processing, and then transmitted to the alarm device in a wireless transmission mode. In this embodiment, the technical means related to wireless signal transmission and data processing are the prior art and are not described in detail.
The present invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.
Claims (8)
1. The utility model provides a novel intelligence carbon brush device which characterized in that: the brush box is internally provided with a plurality of carbon brush chambers, carbon brushes are arranged in the carbon brush chambers, and the rear ends of the carbon brushes are provided with pushing devices; a metal polar plate is attached to the inner wall of the carbon brush chamber, and an insulating medium is arranged between the polar plate and the carbon brush to form a capacitor; a temperature sensor is arranged on the wall of the carbon brush chamber, and a current intensity sensor is arranged at the braid of the carbon brush; the capacitance signal of the polar plate, the temperature signal of the temperature sensor and the current intensity signal of the current intensity sensor are collected and processed and then transmitted to a monitoring terminal or an alarm device.
2. The carbon brush system according to claim 1, wherein: the carbon brush device also comprises a handle, the handle is connected with an assembly shaft, a support and a signal collector are sleeved on the assembly shaft, and the brush box is assembled on the support; one end of the assembling shaft is provided with a convex shoulder, the other end of the assembling shaft is in threaded connection with the handle, and the support and the signal collector are clamped and fixed between the convex shoulder and the handle.
3. The carbon brush system according to claim 2, wherein: the bottom of the support is sequentially provided with a shoulder pole spring and a carbon brush retaining plate, the front end of the carbon brush retaining plate is provided with a flanging, and the flanging is buckled at the front end of the brush box and can retain the carbon brush in the brush box.
4. The carbon brush system according to claim 2, wherein: the capacitance signal of the polar plate, the temperature signal of the temperature sensor and the current intensity signal of the current intensity sensor are transmitted to the signal collector in a wireless or wired transmission mode for collection and processing, and then transmitted to the monitoring terminal or the alarm device in a wireless or wired transmission mode.
5. The carbon brush system according to claim 1 or 2, characterized in that: the inner wall of the carbon brush chamber is provided with a polar plate groove, a capacitor bottom plate is arranged in the polar plate groove, and a polar plate is fixed on the capacitor bottom plate; the pushing device is a coil spring, the outer end part of the coil spring is fixed on the capacitor bottom plate, and the rear end of the carbon brush abuts against the coil spring to enable the coil spring to be unfolded when the carbon brush is installed.
6. The carbon brush system according to claim 1 or 2, characterized in that: a through hole is formed in the wall of the carbon brush chamber, the wall is close to the front end of the carbon brush, the temperature sensor is a surface-mounted pocket-sized temperature sensor, the temperature sensor is connected with a flexible heat conducting element, and the flexible heat conducting element penetrates through the through hole to be in contact with the carbon brush so as to conduct the temperature of the carbon brush to the temperature sensor.
7. The carbon brush system according to claim 1 or 2, characterized in that: the carbon brush is arranged opposite to the pole, and the relative area of the carbon brush is gradually reduced in the forward sliding process.
8. The carbon brush system according to claim 1 or 2, characterized in that: the polar plate is plated with an insulating material which is used as an insulating medium of the capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921960214.8U CN210576946U (en) | 2019-11-13 | 2019-11-13 | Novel intelligent carbon brush device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921960214.8U CN210576946U (en) | 2019-11-13 | 2019-11-13 | Novel intelligent carbon brush device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210576946U true CN210576946U (en) | 2020-05-19 |
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ID=70660669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921960214.8U Active CN210576946U (en) | 2019-11-13 | 2019-11-13 | Novel intelligent carbon brush device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210576946U (en) |
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2019
- 2019-11-13 CN CN201921960214.8U patent/CN210576946U/en active Active
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