CN2103146U - Neodymium iron boron damping device for watt-hour meter - Google Patents
Neodymium iron boron damping device for watt-hour meter Download PDFInfo
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- CN2103146U CN2103146U CN 91218905 CN91218905U CN2103146U CN 2103146 U CN2103146 U CN 2103146U CN 91218905 CN91218905 CN 91218905 CN 91218905 U CN91218905 U CN 91218905U CN 2103146 U CN2103146 U CN 2103146U
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Abstract
The utility model relates to a neodymium-iron-boron damping device for electric energy meters, which is used on electric energy meters. On technical performance parameters, the utility model uses neodymium-iron-boron magnetic steel with high magnetic energy level, resulting in stable performance. Structurally, the utility model simplifies a damping device which is only composed of six parts which are a screw bolt 4-4, a spring washer 4-6, a flat washer 4-5, a support body 4-3, a U-shaped magnetic conducting plate 4-1 and the neodymium-iron-boron magnetic steel 4-2, wherein, the screw bolt 4-4 penetrating through the spring washer 4-6; the flat washer 4-5 and the support body 4-3 are connected with the U-shaped magnetic conducting plate 4-1; the neodymium-iron-boron magnetic steel 4-2 is bonded and welded on the U-shaped magnetic conducting plate 4-1. The utility model has the advantages of convenient verification and adjustment, easy installation, simple structure, stable performance, light weight, accuracy assurance, easy fabrication, low cost and easy popularization. Through experiments, the utility model conforms to national standards.
Description
The utility model belongs to the damping unit of electric energy meter category.
Electric energy meter is a kind of instrument of measuring the electric power time integral, and it covers each several part by drain pan, gearing, aluminium dish, damping unit, frame and table and constitutes.Damping unit occupies critical positions in electric energy meter, it is the core, its action principle is: when the magnetic field that magnetic field that permanent magnet produces and potential winding, current coil are produced all acts on the disk, on disk, produce induction electromotive force and induction current, by magnetic field and the former magnetic field interaction that this induced electromotive force, induced current produced, make disk reach the braking and the purpose of average rate, thus make in disk rotational angular and the circuit the power that consumes clearly be directly proportional.The electric energy that is consumed is read the number of degrees from the gearing that the disk rotation is passed through, i.e. kilowatt-hour number.
At present openly in the damping unit employed magnet steel mostly adopt aluminium nickel, aluminium nickel cobalt material, can be divided into single magnet and two magnet two big classes substantially, the basic mechanical design feature index is:
Br≥1200GS；HC≥500?Oe；
BHmax≥3.2MGOe。
Aluminium nickel, aluminium nickel cobalt belong to the magnetic material of medium level, obvious demagnetization phenomenon are arranged after using certain time limit, and magnetic is subjected to ectocine bigger, cause one difficulty and inconvenience for production, use and the verification of electric energy meter.Owing to the influence of demagnetization phenomenon, increased the number of times of resuming classes of electric energy meter, particularly those do not have the area that the power supply department of magnetizing equipment is administered, and some electric energy meter scraps electric energy meter because of there being suitable magnet steel spare part prematurely.
On March 19th, 1986 announced patented claim and be CN85201307U, name is called watt-hour meter damping permanent magnet device, and original permanent magnet device is being done improvement reaching on the structure on the permanent magnetic material; Permanent magnet uses siderochrome cobalt magnet steel, and magnetic circuit changes single air gap into and installs air gap additional regulates the size that parts change air gap, makes compactness rational in infrastructure, weight saving, and has replaced original permanent magnet device in the watt-hour meter.Weak point is also to dislike on complexity, the weight on this apparatus structure also can alleviating.
Goal of the invention of the present utility model is to avoid above-mentioned prior art weak point and a kind of electric energy meter neodymium iron boron damping unit simple in structure, in light weight, that be easy to adjust is provided.
The purpose of this utility model is achieved in that electric energy meter is made of magnetic conductive board, magnet steel, supporter, bolt, plain washer, spring washer with the neodymium iron boron damping unit, it is characterized in that magnetic conductive board is a U-shaped, U-shaped magnetic conductive board 4-1 is connected with Nd-Fe-B magnet steel 4-2, supporter 4-3, bolt 4-4; U type magnetic conductive board 4-1 is connected with bolt 4-4 and passes supporter 4-3 and realize; Bolt 4-4 is connected with plain washer 4-5 and spring washer 4-6 when passing supporter 4-3; The permanent magnet that is connected on the U-shaped magnetic conductive board is nd-fe-b steel 4-2.
The utility model electric energy meter can also be realized like this with the purpose of neodymium iron boron damping unit: the connected mode of U type magnetic conductive board 4-1 and Nd-Fe-B magnet steel 4-2 adopts bonding or welding; Nd-Fe-B magnet steel can be parallel two, also can be up and down two or a slice; This damping unit 4 is connected with frame 5, and the aluminium dish 3 in the gearing 2 is installed in the air gap 7 of U-shaped magnetic conductive board 4-1; Being shaped as of Nd-Fe-B magnet steel 4-2 in this damping unit 4 is laminar, can be square, rectangle, circle, also can be ellipse, triangle, polygon.
Owing to adopted the new material neodymium iron boron to make magnet, make the damping unit designs simplification, weight saving, and improved the magnetic energy level, its important technological parameters is:
Br≥11500GS；HC≥8800Oe；BHmar≥29MGOe。
Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.
Fig. 1 is the position view of damping unit in electric energy meter that proposes according to the utility model.Piece number 1 is a drain pan; Piece number 2 is a gearing; Piece number 3 is the aluminium dish; Piece number 4 is a damping unit; Piece number 5 is a frame; Piece number 6 is the table lid; Piece number 7 is an air gap; Piece number 8 is an arrow.Drain pan 1 covers 6 and is connected with gearing 2, frame 5, table; Gearing 2 is connected with aluminium dish 3; Frame 5 is connected with damping unit 4; Aluminium dish 3 is installed in the air gap 7 of damping unit 4; The sense of rotation of arrow 8 expression U-shaped magnetic conductive boards.
Fig. 2 is electric energy meter neodymium iron boron damping unit synoptic diagram, and piece number 4-1 is the U-shaped magnetic conductive board among the figure; Piece number 4-2 is a Nd-Fe-B magnet steel; 4-3 is a supporter; Piece number 4-4 is a bolt; Piece number 4-5 is a plain washer; Piece number 4-6 is a spring washer.
The shape of U-shaped magnetic conductive board 4-1 is to be bent by sheet steel to form; Nd-Fe-B magnet steel can be bonded on the U-shaped magnetic conductive board 4-1, also can weld; Supporter 4-3 is a ducted body, is in order to pass bolt 4-4, to simplify the structure; Plain washer 4-5 is in order to adjust air gap 7 usefulness; Spring washer is for the tightness of adjusting damping unit.Through implementing proof, this simple in structure, part is easy to make and adjust, by implementing, especially easily be when verification, to adopt the method for hue angle to replace the method in regulating the qi flowing in the channels crack, this is because the temperature characterisitic of NdFeB material is stable, do not need to be provided with specially temperature compensation means, the Plane Angle that only needs to adjust U-shaped magnetic conductive board 4-1 and aluminium dish 3 gets final product, so verification very is convenient, principle is to be linear relationship between angle and the magnetic field intensity, and arrow 8 is the position of adjusting angle and the expression of direction among Fig. 1, and promptly the Nd-Fe-B magnet steel 4-2 on the U-shaped magnetic conductive board 4-1 and aluminium dish 3 are opposed and rotated a minute angle and get final product.
Because the utility model is a main device on the electric energy meter, existing by further implementing, the result that this device is installed on the electric energy meter to be tested puts down in writing, and meets national standard fully.The national standard code name is GB3924-83 2.1.10 bar and GB3924-83 2.1.6 bar.
The name of being tested is called: external magnetic field influence test.The electric energy meter model of being tested is: DD28 type single-item electric energy meter and DD862a type single-item electric energy meter.Now detailed test findings is listed in table 1, table 2, table 3, the table 4:
DD28 type single-item electric energy meter
External magnetic field influence test: table 1
┉┉
1. technical requirement: GB3924-83 2.1.10 bar
2. test method: test with fundamental error
3. testing equipment: external magnetic field testing table
Test with fundamental error
4. test findings:
22 ℃ of voltage 220V of room temperature frequency 50HZ
5. conclusion (of pressure testing): qualified
DD28 type single-item electric energy meter
Temperature effect test: table 2
┉┉
1. technical requirement: GB3924-83 2.1.6 bar
2. test method: when high temperature, low temperature and room temperature, measure the relative error of watt-hour meter respectively.
3. testing equipment: high-low temperature test chamber
4. test findings: test with fundamental error
22 ℃ of voltage 220V of room temperature frequency 50HZ
5. conclusion (of pressure testing): qualified
DD862a type single-item electric energy meter
External magnetic field influence test: table 3
┉┉
1. technical requirement: GB3924-83 2.1.10 bar
2. test method: test with fundamental error
3. testing equipment: external magnetic field testing table
Test with fundamental error
4. test findings:
18 ℃ of voltage 220V of room temperature frequency 50HZ
5. conclusion (of pressure testing): qualified
DD862a type single-item electric energy meter
Temperature effect test: table 4
┉┉
1. technical requirement: GB3924-83 2.1.6 bar
2. test method: when high temperature, low temperature and room temperature, measure the relative error of watt-hour meter respectively.
3. testing equipment: high-low temperature test chamber
4. test findings: test with fundamental error
18 ℃ of voltage 220V of room temperature frequency 50HZ
| Ib% | Electric current (A) | Power factor (COS φ) | 10 ℃ of temperature changes | The relative error that allows changes % | Actual relative error changes % | ||
| N o061360 | N o061542 | N o061958 | |||||
| 400 | 10 | 1.0 | 1.0 | 0.05 | 0.1 | 0.09 | |
| 100 | 2.5 | 1.0 | 1.0 | 0.07 | 0.06 | 0.05 | |
| 10 | 0.25 | 1.0 | 1.0 | 0.07 | 0.18 | 0.06 | |
| 400 | 10 | 1.0 | 1.5 | 0.74 | 0.93 | 0.89 | |
| 100 | 2.5 | 0.5 | 1.5 | 0.63 | 0.68 | 0.91 | |
| 20 | 0.5 | 0.5 | 1.5 | 0.54 | 0.54 | 0.74 | |
| 400 | 10 | 1.0 | 1.0 | 0.05 | 0.02 | 0.18 | |
| 100 | 2.5 | 1.0 | 1.0 | 0.06 | 0.06 | 0.17 | |
| 10 | 0.25 | 1.0 | 1.0 | 0.10 | 0.17 | 0.21 | |
| 400 | 10 | 0.5 | 1.5 | 0.75 | 0.61 | 0.51 | |
| 100 | 2.5 | 0.5 | 1.5 | 0.58 | 0.68 | 0.57 | |
| 20 | 0.5 | 0.5 | 1.5 | 0.59 | 0.57 | 0.46 | |
5. conclusion (of pressure testing): qualified
The utility model has following advantage compared to existing technology:
1. simple in structure, in light weight, stable performance can be guaranteed precision.
2. easy to adjust, verification is convenient, need not increase special temperature compensation means.
3. need not change the position of the damping unit in the existing electric energy meter, take off original device and can install, this device is easy for installation, is easy to promote.
4. easy to manufacture, cost is low.
Claims (4)
1, electric energy meter is made of magnetic conductive board, magnet steel, supporter, bolt, plain washer, spring washer with the neodymium iron boron damping unit, it is characterized in that magnetic conductive board is a U-shaped, U-shaped magnetic conductive board 4-1 is connected with Nd-Fe-B magnet steel 4-2, supporter 4-3, bolt 4-4, U type magnetic conductive board 4-1 is connected with bolt 4-4 and passes supporter 4-3 and realize, bolt 4-4 is connected with plain washer 4-5 and spring washer 4-6 when passing supporter 4-3, and the permanent magnet that is connected on the U-shaped magnetic conductive board is a Nd-Fe-B magnet steel.
2, electric energy meter according to claim 1 is characterized in that with the neodymium iron boron damping unit connected mode of U type magnetic conductive board 4-1 and Nd-Fe-B magnet steel 4-2 is bonding or welding, and Nd-Fe-B magnet steel can be parallel two, two or a slice up and down.
3, electric energy meter according to claim 1 is characterized in that with the neodymium iron boron damping unit damping unit 4 is connected with frame 5, and the aluminium dish 3 in the gearing 2 is installed in the air gap 7 of 4-1 of U type magnetic conductive board.
4, electric energy meter according to claim 1 with the neodymium iron boron damping unit it is characterized in that in the damping unit 4 Nd-Fe-B magnet steel 4-2 be shaped as laminarly, can be square, rectangle, circle, also can be ellipse, triangle, polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91218905 CN2103146U (en) | 1991-07-24 | 1991-07-24 | Neodymium iron boron damping device for watt-hour meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91218905 CN2103146U (en) | 1991-07-24 | 1991-07-24 | Neodymium iron boron damping device for watt-hour meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2103146U true CN2103146U (en) | 1992-04-29 |
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ID=4926279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91218905 Granted CN2103146U (en) | 1991-07-24 | 1991-07-24 | Neodymium iron boron damping device for watt-hour meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2103146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753496A (en) * | 2014-01-21 | 2014-04-30 | 宁波工程学院 | Bolt holder |
-
1991
- 1991-07-24 CN CN 91218905 patent/CN2103146U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753496A (en) * | 2014-01-21 | 2014-04-30 | 宁波工程学院 | Bolt holder |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |