CN112284722A - Device and method for monitoring abnormity of transmission gear of on-load tap-changer - Google Patents
Device and method for monitoring abnormity of transmission gear of on-load tap-changer Download PDFInfo
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- CN112284722A CN112284722A CN202011142436.6A CN202011142436A CN112284722A CN 112284722 A CN112284722 A CN 112284722A CN 202011142436 A CN202011142436 A CN 202011142436A CN 112284722 A CN112284722 A CN 112284722A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 238000012806 monitoring device Methods 0.000 claims abstract description 15
- 230000003068 static effect Effects 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 5
- 230000005856 abnormality Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 6
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- 230000009471 action Effects 0.000 description 4
- 238000005187 foaming Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
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Abstract
The invention belongs to the technical field of substation equipment state monitoring, and particularly relates to an abnormal monitoring device and method for a transmission gear of an on-load tap-changer. The three transmission shafts respectively penetrate through the three hollow encoders, and the hollow encoders are connected to the outer wall of the converter transformer box body through mounting points of the hollow encoders; two ends of the first transmission shaft are respectively connected with the operating mechanism box and the first transmission gear box; two ends of the second transmission shaft are respectively connected with the first transmission gear box and the second transmission gear box; two ends of the third transmission shaft are respectively connected with the second transmission gear box and the third transmission gear box; the third transmission gear box is connected with a second on-load tap-changer in the converter transformer box body; the second transmission gear box is connected with a first on-load tap-changer in the converter transformer box body. The invention has the advantages of simple structure and convenient operation, can avoid the abnormal operation of the converter transformer caused by the fault of the on-load tap-changer and effectively reduce the fault rate of the transmission gear box of the on-load tap-changer.
Description
Technical Field
The invention belongs to the technical field of substation equipment state monitoring, and particularly relates to an abnormal monitoring device and method for a transmission gear of an on-load tap-changer.
Background
In order to deal with voltage fluctuation of the converter transformer on the network side, the converter transformer adjusts gears through an on-load tap-changer to ensure stable voltage on the valve side. The characteristics of more regulating gears and large running current of the converter transformer are considered, and the regulation is carried out by connecting two or more on-load tap-changers in series. The on-load tap-changer of the converter transformer has many action times, which can reach at most ten thousand times per year, the operating mechanism of the on-load tap-changer is a power source for making the switch act, and the transmission gear box is an important part of the operating mechanism.
Existing devices of the same type generally include: the operating mechanism comprises an operating mechanism box 1, a first transmission shaft 2, a second transmission shaft 8, a first on-load tap-changer 10, a third transmission shaft 13, a third transmission gear box 14, a second on-load tap-changer 15 and a converter transformer box 16.
With the increase of the action times of the on-load tap-changer, a transmission gear in a transmission gear box is abraded, the transmission gear box is sealed badly, the transmission gear box is affected by damp, the gear is likely to rust, the gear matching is abnormal, the switching process of two or more on-load tap-changers is asynchronous, the voltage adjustment is directly affected, the operation of an alternating current and direct current system cannot be met, the action of a voltage regulating switch is also likely to be not in place, a voltage regulating winding of a transformer generates short-circuit current larger than the normal action, huge energy is generated in the gear switching process, the voltage regulation is not successful, the on-load tap-changer is failed, the fault of a converter transformer is likely to be caused in serious cases.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a device and a method for monitoring the abnormity of a transmission gear of an on-load tap-changer. The invention aims to monitor the rotating speeds of all transmission shafts by using a hollow encoder in the gear shifting process of the on-load tap-changer, and judge whether a gear in a transmission gear box of the on-load tap-changer works in a normal state by monitoring the matching relation between the rotating turns of all transmission shafts of an on-load tap-changer operating mechanism and the rotating turns among the transmission shafts and the staying angle of the transmission shafts so as to establish the power failure and maintenance plan of the transmission gear box of the on-load tap-changer of the converter transformer.
The technical scheme adopted by the invention for realizing the purpose is as follows:
an on-load tap-changer transmission gear abnormity monitoring device is characterized in that a converter transformer box body is respectively connected with a first hollow encoder, a second hollow encoder and a third hollow encoder through a first hollow encoder mounting point, a second hollow encoder mounting point and a third hollow encoder mounting point; the first transmission shaft, the second transmission shaft and the third transmission shaft respectively pass through the first hollow encoder, the second hollow encoder and the third hollow encoder; one end of the first transmission shaft is connected with the operating mechanism box, and the other end of the first transmission shaft is connected with the first transmission gear box; one end of the second transmission shaft is connected with the first transmission gear box, and the other end of the second transmission shaft is connected with the second transmission gear box; one end of the third transmission shaft is connected with the second transmission gear box, and the other end of the third transmission shaft is connected with the third transmission gear box; the third transmission gear box is connected with the second on-load tap-changer; the second transmission gear box is connected with the first on-load tap-changer; the second on-load tap-changer and the first on-load tap-changer are arranged in the converter transformer box body.
The first transmission shaft, the second transmission shaft and the third transmission shaft respectively penetrate through the first hollow encoder, the second hollow encoder and the third hollow encoder, the rotating parts of the first hollow encoder, the second hollow encoder and the third hollow encoder are adhered to the transmission shaft, and the static part of the hollow encoder is connected to the outer wall of the converter transformer box body through the mounting point of the first hollow encoder, the mounting point of the second hollow encoder and the mounting point of the third hollow encoder.
A motor rotating shaft in the operating mechanism box is connected with a first transmission shaft through a pin, and the other end of the first transmission shaft is connected with a second transmission shaft through the matching of gears in a first transmission gear box; the second transmission shaft is connected with a third transmission shaft through the matching of a gear in a second transmission gear box, and the gear in the second transmission gear box is connected with a change-over switch in the first on-load tap-changer; the third transmission shaft is connected with a change-over switch in the second on-load tap-changer through the matching of a gear in the third transmission gear box.
The other end of the first transmission shaft is connected with a gear in the first transmission gear box through a pin, and the gear connected with one end of the first transmission shaft is connected with a gear in the first transmission gear box through meshing in a matching manner; one end of the second transmission shaft is connected with a gear in the first transmission gear box through a pin, and the gear connected with one end of the second transmission shaft is connected with a gear in the first transmission gear box through meshing in a matching manner; one end of the third transmission shaft is connected with a gear in the first transmission gear box through a pin, and the gear connected with one end of the third transmission shaft is connected with the gear in the first transmission gear box through occlusion in a matching manner.
The first hollow encoder penetrates into the first transmission shaft and is connected to the side wall of the converter transformer box body through a first hollow encoder mounting point; the second hollow encoder penetrates into the second transmission shaft and is connected to the upper wall of the converter transformer box body through a second hollow encoder mounting point; and the third hollow encoder penetrates through the third transmission shaft and is connected to the upper wall of the converter transformer box body through a mounting point of the third hollow encoder.
The first hollow encoder, the second hollow encoder and the third hollow encoder are all powered through the operating mechanism box, and collected signals are sent to the power station control screen through communication cables in the operating mechanism box.
The first hollow encoder, the second hollow encoder and the third hollow encoder comprise a rotating part and a static part;
the rotating part of the first hollow encoder is connected with the first transmission shaft through foamed rubber, and the static part of the first hollow encoder is welded on the side wall of the converter transformer box body through a first hollow encoder mounting point;
the rotating part of the second hollow encoder is connected with the second transmission shaft through foaming glue, and the static part is welded on the outer wall of the top of the converter transformer box body through the mounting point of the second hollow encoder;
the rotating part of the third hollow encoder is connected with the third transmission shaft through foaming glue, and the static part is welded on the outer wall of the top of the converter transformer box body through the mounting point of the third hollow encoder.
The upper part of the second on-load tap-changer is arranged on a bracket in the converter transformer box body and is fixed on the upper surface of the converter transformer box body through a flange plate and bolts.
The first transmission gear box includes: the vertical gear A and the horizontal gear A are matched with each other, so that the first transmission shaft drives the second transmission shaft to rotate;
the second transmission gear box includes: a first vertical gear, a second vertical gear and a horizontal gear B; through the matching of the first vertical gear, the second vertical gear and the horizontal gear B, on one hand, the second transmission shaft drives the third transmission shaft to act, and on the other hand, the second transmission shaft drives the change-over switch in the first on-load tap-changer to act;
the third transmission gear box includes: and the vertical gear C and the horizontal gear C are matched, and the third transmission shaft drives the change-over switch in the second on-load tap-changer to act.
An abnormality monitoring method for a transmission gear of an on-load tap-changer comprises the following steps:
step 1: when the converter transformer adjusts the gear of the on-load tap-changer, the motor in the operating mechanism box is started to drive the first transmission shaft to rotate, and the first transmission shaft drives the second transmission shaft to rotate through the first transmission gear box; the second transmission shaft drives the third transmission shaft to rotate on one hand and drives a change-over switch in the on-load tap-changer to act on the other hand through a second transmission gear box; the third transmission shaft drives a change-over switch in the second on-load tap-changer to act through a third transmission gear box;
step 2: in the voltage regulation process of the second on-load tap-changer, the first hollow encoder, the second hollow encoder and the third hollow encoder respectively monitor the rotation turns and the stay angles of the first transmission shaft, the second transmission shaft and the third transmission shaft, and the rotation turns and the stay angles are transmitted to a screen of a power station through a communication cable in an operating mechanism box;
and step 3: judging the gear working states of a vertical gear A and a horizontal gear A in a first transmission gear box, a first vertical gear, a second vertical gear and a horizontal gear B in a second transmission gear box, and a vertical gear C and a horizontal gear C in a third transmission gear box according to the preset matching relation and the preset stopping angle of the rotation turns of the first transmission shaft, the second transmission shaft and the third transmission shaft;
and 4, step 4: and according to the working state of the gear, making power failure and maintenance plans of the first transmission gear box, the second transmission gear box and the third transmission gear box.
The invention has the following beneficial effects and advantages:
the abnormity monitoring device for the transmission gear of the on-load tap-changer has the advantages of simple structure and convenience in operation. The device monitors the rotating speed of the transmission shaft of the on-load tap-changer operating mechanism through the hollow encoder, judges whether the transmission shaft of the operating mechanism rotates normally in the operating process by monitoring the matching relation between the number of rotation turns of all transmission shafts of the on-load tap-changer operating mechanism and the number of rotation turns among the transmission shafts and the stop angle of the transmission shafts, thereby discovering whether the working state of the gears in the transmission gear box is normal, discovering the abnormal state of the gears in the transmission gear box in time, formulating the power failure and maintenance plan of the transmission gear box of the on-load tap-changer of the converter transformer, avoiding the abnormal operation of the converter transformer caused by the fault of the on-load tap-changer, and effectively reducing.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of the structure of the apparatus of the present invention;
FIG. 2 is a top view of a first outline code in the present invention;
FIG. 3 is a front view of the internal gear structure of the first transmission gear box according to the present invention;
FIG. 4 is a front view of the internal gear structure of the second transmission gear box according to the present invention;
fig. 5 is a front view structural diagram of the internal gear structure of the third transmission gear box in the invention.
In the figure: the automatic transmission mechanism comprises an operating mechanism box 1, a first transmission shaft 2, a first hollow encoder 3, a first hollow encoder mounting point 4, a first transmission gear box 5, a second hollow encoder 6, a second hollow encoder mounting point 7, a second transmission shaft 8, a second transmission gear box 9, a first on-load tap-changer 10, a third hollow encoder 11, a third hollow encoder mounting point 12, a third transmission shaft 13, a third transmission gear box 14, a second on-load tap-changer 15, a converter transformer box 16, a rotating part 31, a static part 32, a vertical gear A51, a horizontal gear A52, a first vertical gear 91, a second vertical gear 92, a horizontal gear B93, a vertical gear C141 and a horizontal gear C142.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The solution of some embodiments of the invention is described below with reference to fig. 1-5.
Example 1
The invention discloses an abnormality monitoring device for a transmission gear of an on-load tap-changer, which is shown in figure 1, wherein figure 1 is a structural schematic diagram of the abnormality monitoring device. The device of the invention comprises: the device comprises an operating mechanism box 1, a first transmission shaft 2, a second transmission shaft 8, a first on-load tap-changer 10, a third transmission shaft 13, a third transmission gear box 14, a second on-load tap-changer 15 and a converter transformer box body 16, and also comprises a newly-added part: the hollow encoder comprises a first hollow encoder 3, a first hollow encoder mounting point 4, a second hollow encoder 6, a second hollow encoder mounting point 7, a third hollow encoder 11 and a third hollow encoder mounting point 12.
Specifically, the device of the invention mainly comprises: the automatic control device comprises an operating mechanism box 1, a first transmission shaft 2, a first hollow encoder 3, a first hollow encoder mounting point 4, a first transmission gear box 5, a second hollow encoder 6, a second hollow encoder mounting point 7, a second transmission shaft 8, a second transmission gear box 9, a first on-load tap-changer 10, a third hollow encoder 11, a third hollow encoder mounting point 12, a third transmission shaft 13, a third transmission gear box 14, a second on-load tap-changer 15 and a converter transformer box 16.
The converter transformer box body 16 is respectively connected with a first hollow encoder 3, a second hollow encoder 6 and a third hollow encoder 11 through a first hollow encoder mounting point 4, a second hollow encoder mounting point 7 and a third hollow encoder mounting point 12; the first transmission shaft 2, the second transmission shaft 8 and the third transmission shaft 13 respectively penetrate through the first hollow encoder 3, the second hollow encoder 6 and the third hollow encoder 11; one end of the first transmission shaft 2 is connected with the operating mechanism box 1, and the other end is connected with the first transmission gear box 5; one end of the second transmission shaft 8 is connected with the first transmission gear box 5, and the other end of the second transmission shaft is connected with the second transmission gear box 9; one end of the third transmission shaft 13 is connected with the second transmission gear box 9, and the other end is connected with the third transmission gear box 14; the third transmission gear box 14 is connected with a second on-load tap-changer 15; the second on-load tap-changer 15 is arranged in the converter transformer box 16, and the upper part of the second on-load tap-changer 15 is arranged on a bracket in the converter transformer box 16 and is fixed on the upper surface of the converter transformer box 16 through a flange plate and a bolt; the converter transformer box 16 is an existing product, and the converter transformer box also comprises iron cores, windings, insulating paper boards and other components.
The second on-load tap-changer 15 and the first on-load tap-changer 10 are mounted on a support in the converter transformer tank 16 and fixed on the upper surface of the converter transformer tank 16 by flanges and bolts. The second on-load tap-changer 15 and the first on-load tap-changer 10 are both existing products.
The operating mechanism box 1, the first transmission shaft 2, the first transmission gear box 5, the second transmission shaft 8, the second transmission gear box 9, the first on-load tap-changer 10, the third transmission shaft 13, the third transmission gear box 14, the second on-load tap-changer 15 and the converter transformer box 16 are all components of a converter transformer.
The first hollow encoder 3, the first hollow encoder mounting point 4, the second hollow encoder 6, the second hollow encoder mounting point 7, the third hollow encoder 11 and the third hollow encoder mounting point 12 are commercially available products.
When the device is specifically installed, the first transmission shaft 2, the second transmission shaft 8 and the third transmission shaft 13 respectively penetrate through the first hollow encoder 3, the second hollow encoder 6 and the third hollow encoder 11, the rotating parts of the first hollow encoder 3, the second hollow encoder 6 and the third hollow encoder 11 are adhered to the transmission shafts through foaming glue, and the static part of the hollow encoder is welded to the wall of a converter transformer box 16 through the first hollow encoder mounting point 4, the second hollow encoder mounting point 7 and the third hollow encoder mounting point 12.
First hollow encoder 3, second hollow encoder 6 and third hollow encoder 11 are monitored the number of turns and the stop angle of first transmission shaft 2, second transmission shaft 8 and third transmission shaft, and first hollow encoder 3, second hollow encoder 6 and third hollow encoder 11 need satisfy on-the-spot installation dimensional requirement and measurement accuracy requirement can, do not require to concrete model. First hollow encoder 3, second hollow encoder 6 and third hollow encoder 11 all get the electricity through operating device case 1, and the signal transmission who will gather through the communication cable in the operating device case 1 reaches the power station control screen.
A motor rotating shaft in the operating mechanism box 1 is connected with a first transmission shaft 2 through a pin, and the first transmission shaft 2 is connected with a second transmission shaft 8 through the matching of a gear in a first transmission gear box 5; the second transmission shaft 8 is connected with a third transmission shaft 13 through the matching of gears in a second transmission gear box 9, and the gears in the second transmission gear box 9 are connected with a change-over switch in the first on-load tap-changer 10; the third transmission shaft 13 is connected with a change-over switch in the second on-load tap-changer 15 through the gear fit in the third transmission gear box 14.
A motor in the operating mechanism box 1 drives a first transmission shaft 2 to rotate through gear matching, and the rotating first transmission shaft 2 drives a second transmission shaft 8 to rotate through gear matching in a first transmission gear box 5; the rotating second transmission shaft 8 drives the third transmission shaft 13 to rotate on one hand and drives the change-over switch in the first on-load tap-changer 10 to act on the other hand through the matching of gears in the second transmission gear box 9; the rotating third transmission shaft 13 drives the change-over switch in the second on-load tap-changer 15 to act through the cooperation of the gears in the third transmission gear box 14.
One end of the first transmission shaft 2 is connected with a gear in the first transmission gear box 5 through a pin, and the gear connected with one end of the first transmission shaft 2 is connected with a gear in the first transmission gear box 5 through meshing in a matching manner; one end of the second transmission shaft 8 is connected with a gear in the first transmission gear box 9 through a pin, and the gear connected with one end of the second transmission shaft 8 is connected with a gear in the first transmission gear box 9 through meshing in a matching manner; one end of the third transmission shaft 13 is connected with a gear in the first transmission gear box 14 through a pin, and the gear connected with one end of the third transmission shaft 13 is connected with a gear in the first transmission gear box 14 through meshing in a matching manner.
The first hollow encoder 3 penetrates the first transmission shaft 2 and is welded on the side wall of the converter transformer box body 16 through the first hollow encoder mounting point 4, the second hollow encoder 6 penetrates the second transmission shaft 8 and is welded on the upper wall of the converter transformer box body 16 through the second hollow encoder mounting point 7, and the third hollow encoder 11 penetrates the third transmission shaft 13 and is welded on the upper wall of the converter transformer box body 16 through the third hollow encoder mounting point 12.
As shown in FIG. 2, FIG. 2 is a top view of a first open code in the present invention. The first hollow code 3 mainly comprises a rotating part 31 and a static part 32, wherein the rotating part 31 is fixedly connected with the first transmission shaft 2 through foamed rubber, and the static part 32 is welded on the side wall of the converter transformer box 16 through a first hollow code mounting point 4.
The second hollow encoder 6 and the third hollow encoder 11 have the same structure as the first hollow encoder 3.
The second hollow encoder 6 mainly comprises a rotating part 31 and a static part 32, wherein the rotating part 31 is fixedly connected with the second transmission shaft 8 through foamed rubber, and the static part 32 is welded on the outer wall of the top of the converter transformer box 16 through a second hollow encoder mounting point 7.
The third hollow encoder 11 mainly comprises a rotating part 31 and a static part 32, wherein the rotating part 31 is fixedly connected with the third transmission shaft 13 through foamed rubber, and the static part 32 is welded on the outer wall of the top of the converter transformer box 16 through a third hollow encoder mounting point 12.
As shown in fig. 3, fig. 3 is a schematic structural diagram of the internal gear structure of the first transmission gear box in the front view direction. The first transmission gear box 5 includes: the vertical gear A51 and the horizontal gear A52 realize the function that the first transmission shaft 2 drives the second transmission shaft 8 to rotate through the matching of the vertical gear A51 and the horizontal gear A52.
The first transmission gear box 5 is a product which is commercially available at present.
As shown in fig. 4, fig. 4 is a front view structural diagram of the internal gear structure of the second transmission gear box in the invention. The second transmission gear box 9 includes: a first vertical gear 91, a second vertical gear 92, and a horizontal gear B93. Through the cooperation of the first vertical gear 91, the second vertical gear 92 and the horizontal gear B93, on one hand, the function that the second transmission shaft 8 drives the third transmission shaft 13 is realized, and on the other hand, the function that the second transmission shaft 8 drives the change-over switch in the first on-load tap-changer 10 is realized.
The second transmission gear box 9 is an existing product.
As shown in fig. 5, fig. 5 is a front view structural diagram of the internal gear structure of the third transmission gear box according to the present invention. The third transmission gear box 14 includes: the vertical gear C141 and the horizontal gear C142 realize that the third transmission shaft 13 drives the change-over switch in the second on-load tap-changer 15 to act through the matching of the vertical gear C141 and the horizontal gear C142.
The third transmission gear box 14, the operating mechanism box 1 and the converter transformer box 16 are all existing products.
Example 2
The invention also provides an embodiment, which utilizes the device for monitoring the abnormity of the transmission gear of the on-load tap-changer to monitor, thereby providing a method for monitoring the abnormity of the transmission gear of the on-load tap-changer, comprising the following steps:
step 1: when the converter transformer needs to adjust the gear of the on-load tap-changer, the motor in the operating mechanism box 1 is started to drive the first transmission shaft 2 to rotate, and the first transmission shaft 2 drives the second transmission shaft 8 to rotate through the first transmission gear box 5; the second transmission shaft 8 drives the third transmission shaft 13 to rotate on one hand and drives a change-over switch in the on-load tap-changer 10 to act on the other hand through the second transmission gear box 9; the third transmission shaft 13 drives the change-over switch in the second on-load tap-changer 15 to act through the third transmission gear box 14.
Step 2: in the voltage regulation process of the second on-load tap-changer 15, the first hollow encoder 3, the second hollow encoder 6 and the third hollow encoder 11 respectively monitor the rotation turns and the stay angles of the first transmission shaft 2, the second transmission shaft 8 and the third transmission shaft 13, and the rotation turns and the stay angles are transmitted to a screen of a power station through a communication cable in the operating mechanism box 1.
And step 3: according to the preset matching relationship among the rotation turns of the first transmission shaft 2, the second transmission shaft 8 and the third transmission shaft 13 and the stop angles of the first transmission shaft 2, the second transmission shaft 8 and the third transmission shaft 13, the gear working states of the vertical gear A51 and the horizontal gear A52 in the first transmission gear box 5, the first vertical gear 91, the second vertical gear 92 and the horizontal gear B93 in the second transmission gear box 9 and the vertical gear C141 and the horizontal gear C142 in the third transmission gear box 14 are judged.
And 4, step 4: and according to the working state of the gears, power failure and maintenance plans of the first transmission gear box 5, the second transmission gear box 9 and the third transmission gear box 14 are formulated.
In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "connected" and "fixed" are to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral connection. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the indicated devices or units must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an on-load tap-changer drive gear anomaly monitoring devices which characterized by: the converter transformer box body (16) is respectively connected with a first hollow encoder (3), a second hollow encoder (6) and a third hollow encoder (11) through a first hollow encoder mounting point (4), a second hollow encoder mounting point (7) and a third hollow encoder mounting point (12); the first transmission shaft (2), the second transmission shaft (8) and the third transmission shaft (13) respectively penetrate through the first hollow encoder (3), the second hollow encoder (6) and the third hollow encoder (11); one end of the first transmission shaft (2) is connected with the operating mechanism box (1), and the other end is connected with the first transmission gear box (5); one end of the second transmission shaft (8) is connected with the first transmission gear box (5), and the other end is connected with the second transmission gear box (9); one end of the third transmission shaft (13) is connected with the second transmission gear box (9), and the other end is connected with the third transmission gear box (14); the third transmission gear box (14) is connected with a second on-load tap-changer (15); the second transmission gear box (9) is connected with the first on-load tap-changer (10); the second on-load tap-changer (15) and the first on-load tap-changer (10) are arranged in the converter transformer tank (16).
2. The on-load tap-changer transmission gear anomaly monitoring device according to claim 1, characterized in that: first transmission shaft (2), second transmission shaft (8) and third transmission shaft (13) pass first hollow encoder (3), second hollow encoder (6) and third hollow encoder (11) respectively, stick together the rotating part of first hollow encoder (3), second hollow encoder (6) and third hollow encoder (11) and the transmission shaft, pass through first hollow encoder mounting point (4), second hollow encoder mounting point (7) and third hollow encoder mounting point (12) with the static part of hollow encoder and connect on the outer wall of converter transformer box (16).
3. The on-load tap-changer transmission gear anomaly monitoring device according to claim 1, characterized in that: a motor rotating shaft in the operating mechanism box (1) is connected with a first transmission shaft (2) through a pin, and the other end of the first transmission shaft (2) is connected with a second transmission shaft (8) through the matching of a gear in a first transmission gear box (5); the second transmission shaft (8) is connected with the third transmission shaft (13) through the matching of a gear in the second transmission gear box (9), and the gear in the second transmission gear box (9) is connected with a change-over switch in the first on-load tap-changer (10); the third transmission shaft (13) is connected with a change-over switch in the second on-load tap-changer (15) through the matching of gears in the third transmission gear box (14).
4. The on-load tap-changer transmission gear anomaly monitoring device according to claim 3, characterized in that: the other end of the first transmission shaft (2) is connected with a gear in the first transmission gear box (5) through a pin, and the gear connected with one end of the first transmission shaft (2) is connected with the gear in the first transmission gear box (5) through meshing in a matching manner; one end of the second transmission shaft (8) is connected with a gear in the first transmission gear box (9) through a pin, and the gear connected with one end of the second transmission shaft (8) is connected with the gear in the first transmission gear box (9) through meshing in a matching way; one end of the third transmission shaft (13) is connected with a gear in the first transmission gear box (14) through a pin, and the gear connected with one end of the third transmission shaft (13) is connected with the gear in the first transmission gear box (14) through meshing in a matching way.
5. The on-load tap-changer transmission gear anomaly monitoring device according to claim 1, characterized in that: the first hollow encoder (3) penetrates through the first transmission shaft (2) and is connected to the side wall of the converter transformer box body (16) through a first hollow encoder mounting point (4); the second hollow encoder (6) penetrates through the second transmission shaft (8) and is connected to the upper wall of the converter transformer box body (16) through a second hollow encoder mounting point (7); and the third hollow encoder (11) penetrates through the third transmission shaft (13) and is connected to the upper wall of the converter transformer box body (16) through a third hollow encoder mounting point (12).
6. The on-load tap-changer transmission gear anomaly monitoring device according to claim 1, characterized in that: the power station control system is characterized in that the first hollow encoder (3), the second hollow encoder (6) and the third hollow encoder (11) are powered through the operating mechanism box (1), and collected signals are sent to the power station control screen through communication cables in the operating mechanism box (1).
7. The on-load tap-changer transmission gear anomaly monitoring device according to claim 1, characterized in that:
the first hollow encoder (3), the second hollow encoder (6) and the third hollow encoder (11) comprise a rotating part (31) and a static part (32);
the rotating part (31) of the first hollow encoder (3) is connected with the first transmission shaft (2) through foamed rubber, and the static part (32) is welded on the side wall of the converter transformer box body (16) through the first hollow encoder mounting point (4);
a rotating part (31) of the second hollow encoder (6) is connected with the second transmission shaft (8) through foamed rubber, and a static part (32) is welded on the outer wall of the top of the converter transformer box body (16) through a second hollow encoder mounting point (7);
the rotating part (31) of the third hollow encoder (11) is connected with the third transmission shaft (13) through foamed rubber, and the static part (32) is welded on the outer wall of the top of the converter transformer box body (16) through a third hollow encoder mounting point (12).
8. The on-load tap-changer transmission gear anomaly monitoring device according to claim 1, characterized in that: the upper part of the second on-load tap-changer (15) is arranged on a bracket in the converter transformer box body (16) and is fixed on the upper surface of the converter transformer box body (16) through a flange plate and bolts.
9. The on-load tap-changer transmission gear anomaly monitoring device according to claim 1, characterized in that: the first transmission gear box (5) includes: the vertical gear A (51) and the horizontal gear A (52) are matched with each other through the vertical gear A (51) and the horizontal gear A (52), so that the first transmission shaft (2) drives the second transmission shaft (8) to rotate;
the second transmission gear box (9) includes: a first vertical gear (91), a second vertical gear (92), and a horizontal gear B (9); through the matching of the first vertical gear (91), the second vertical gear (92) and the horizontal gear B (93), on one hand, the second transmission shaft (8) drives the third transmission shaft (13) to act, and on the other hand, the second transmission shaft (8) drives the change-over switch in the first on-load tap-changer (10) to act;
the third transmission gear box (14) includes: and the vertical gear C (141) and the horizontal gear C (142) are matched, and the third transmission shaft (13) drives a change-over switch in the second on-load tap-changer (15) to act through the matching of the vertical gear C (141) and the horizontal gear C (142).
10. An abnormality monitoring method for a transmission gear of an on-load tap-changer is characterized by comprising the following steps: the method comprises the following steps:
step 1: when the converter transformer adjusts the gear of the on-load tap-changer, the motor in the operating mechanism box is started to drive the first transmission shaft to rotate, and the first transmission shaft drives the second transmission shaft to rotate through the first transmission gear box; the second transmission shaft drives the third transmission shaft to rotate on one hand and drives a change-over switch in the on-load tap-changer to act on the other hand through a second transmission gear box; the third transmission shaft drives a change-over switch in the second on-load tap-changer to act through a third transmission gear box;
step 2: in the voltage regulation process of the second on-load tap-changer, the first hollow encoder, the second hollow encoder and the third hollow encoder respectively monitor the rotation turns and the stay angles of the first transmission shaft, the second transmission shaft and the third transmission shaft, and the rotation turns and the stay angles are transmitted to a screen of a power station through a communication cable in an operating mechanism box;
and step 3: judging the gear working states of a vertical gear A and a horizontal gear A in a first transmission gear box, a first vertical gear, a second vertical gear and a horizontal gear B in a second transmission gear box, and a vertical gear C and a horizontal gear C in a third transmission gear box according to the preset matching relation and the preset stopping angle of the rotation turns of the first transmission shaft, the second transmission shaft and the third transmission shaft;
and 4, step 4: and according to the working state of the gear, making power failure and maintenance plans of the first transmission gear box, the second transmission gear box and the third transmission gear box.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011142436.6A CN112284722A (en) | 2020-10-22 | 2020-10-22 | Device and method for monitoring abnormity of transmission gear of on-load tap-changer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011142436.6A CN112284722A (en) | 2020-10-22 | 2020-10-22 | Device and method for monitoring abnormity of transmission gear of on-load tap-changer |
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| CN112284722A true CN112284722A (en) | 2021-01-29 |
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| CN202011142436.6A Pending CN112284722A (en) | 2020-10-22 | 2020-10-22 | Device and method for monitoring abnormity of transmission gear of on-load tap-changer |
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