CN107966598A - A kind of protective device for effectively extending box of electric energy meter service life - Google Patents
A kind of protective device for effectively extending box of electric energy meter service life Download PDFInfo
- Publication number
- CN107966598A CN107966598A CN201711282490.9A CN201711282490A CN107966598A CN 107966598 A CN107966598 A CN 107966598A CN 201711282490 A CN201711282490 A CN 201711282490A CN 107966598 A CN107966598 A CN 107966598A
- Authority
- CN
- China
- Prior art keywords
- babinet
- electric energy
- chamber door
- energy meter
- damping ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a kind of box of electric energy meter protective device, belong to electrical facility technical field.Box of electric energy meter protective device includes batch meter body and response agency, batch meter body includes babinet and chamber door, rotation axis is fixedly installed on babinet, sleeve is fixedly installed on chamber door, response agency includes the first reduction torsion spring and the first damper assembly, (the first back-moving spring respectively with rotation axis and sleeve connection, so that chamber door have relative to body pivot and by openend close trend, first damper assembly includes two the first damping rings, and two the first damping rings are bonded to each other and for limiting velocity of rotation of the chamber door relative to babinet.Box of electric energy meter protective device provided by the invention, automatically chamber door can be automatically closed and closes the openend of babinet, ensure that electric energy meter is in the environment of relative closure, effectively avoid the electric energy meter caused by staff slips up from being caught in the rain, animal damage etc., effectively extend the service life of the instruments such as electric energy meter.
Description
Technical field
The present invention relates to electrical facility technical field, and in particular to a kind of box of electric energy meter protective device.
Background technology
Box of electric energy meter is for the totality of measurement instrument and ancillary equipment necessary to measuring electric energy, including electric energy
Table, metering voltage, current transformer and its secondary circuit, electrical energy measurement screen, cabinet, case etc..
In actual use, box of electric energy meter is disposed in natural environment, and electric energy meter etc. damages in order to prevent, is needed
The chamber door of batch meter is closed.However, staff can cause in batch meter because some reasons are forgotten to close chamber door
Electric energy meter easily by drench with rain, animal damage etc..
The content of the invention
It is an object of the invention to provide a kind of protective device for effectively extending box of electric energy meter service life, make metering
The chamber door of case body can be automatically closed, even if staff forgets to close chamber door, chamber door also can be by the opening end seal of babinet
Close, it is ensured that electric energy meter is in the environment of relative closure, is avoided drenching with rain, animal damage etc., is effectively extended the instruments such as electric energy meter
Service life.
In order to solve the above technical problem, the present invention provides following technical solution：
A kind of protective device for effectively extending box of electric energy meter service life, the protective device include batch meter body, institute
Stating batch meter body includes babinet and chamber door, and the babinet has the accommodating cavity for being used for accommodating electric energy meter, the accommodating cavity
With openend, rotation axis is fixedly installed on the babinet, sleeve is fixedly installed on the chamber door, the sleeve is rotatable
Be sheathed on the rotation axis so that the openend can be opened or be closed to the chamber door；The protective device further includes back
Answer a pager's call structure, the response agency includes the first reduction torsion spring and the first damper assembly, the (the first back-moving spring respectively with it is described
Rotation axis and sleeve connection, so that the chamber door has relative to the body pivot and the trend of closing the openend,
First damper assembly includes two the first damping rings, one of them described first damping ring and the rotation axis connection, separately
Outer first damping ring and the sleeve connection, two first damping rings are bonded to each other and for limiting the case
Door relative to the babinet velocity of rotation.
Further, the response agency further includes regulating part, and the regulating part includes adjusting screw rod, adjusting nut and tune
Compression spring is saved, two first damping rings are respectively fixed damping ring and active damping ring, the fixed damping ring rigid connection
In the sleeve, the active damping ring is sheathed on the rotation axis, the rotation along the axially slidable of the rotation axis
Axis passes through the fixed damping ring, and the adjusting screw rod is fixedly installed on the rotation axis, and the adjusting nut is sheathed on described
The adjusting screw rod and adjusting nut is threadedly coupled with the adjusting screw rod, the adjusting nut can be along the adjusting screw rod
It is axially moved and is arranged on the adjusting screw rod closer or far from the active damping ring, the adjusting compression spring sleeve and is respectively held against institute
Adjusting nut and the active damping ring are stated, the active damping ring is pressed in the fixed damping ring by the adjusting nut.
Further, the protective device further includes time-delay mechanism, and the time-delay mechanism includes fixed part, rotation section, the
Two reduction torsion springs, leading screw, screw head and the second damper assembly, and the fixed part is fixedly installed on the babinet, the rotation section
The babinet is rotatably arranged at, second damper assembly includes two the second damping rings, two second damping rings
The opposite side of the fixed part and the rotation section is respectively arranged at, second damper assembly is bonded to each other and for limiting institute
Velocity of rotation of the rotation section relative to the fixed part is stated, the rotation section is internally provided with driving nut, and the leading screw is worn
Coordinate arranged on the driving nut and with the driving nut, the head that screws is used to control the rotation section to rotate, the set
Multiple embedded holes are provided with cylinder, and the multiple embedded hole is described along the circumferentially disposed of the sleeve and corresponding with the leading screw
When rotation section rotates, axial movement that the leading screw can be along the sleeve and the into and out embedded hole, the leading screw
When in into the embedded hole, the chamber door cannot be relative to the body pivot, when the leading screw departs from the embedded hole, institute
Stating chamber door can be relative to the body pivot.
Further, the time-delay mechanism further includes driving member, described to screw between head and the rotation section by described
Driving member transmission coordinates, and the driving member includes first bevel gear and second bevel gear, the first bevel gear and the driving
Nut is coaxially disposed and can rotate synchronously, and the second bevel gear is rotatably arranged at the babinet and is bored with described first
Gear drive coordinates, and the head that screws is connected with the second bevel gear and for driving the second bevel gear to rotate, described
Screw head to be located inside the accommodating cavity, the head that screws is cylindric.
Further, the circumferential exterior surface for screwing head is provided with anti-skid chequer, and the anti-skid chequer screws head described in
It is axially extending.
Further, removably connected between the time-delay mechanism and the babinet.
Further, the side of the close chamber door of the babinet is provided with magnetic absorption portion, the magnetic absorption portion
The surrounding of the openend is surrounded on, is acted on and adsorbed by magnetic absorption between the magnetic absorption portion and the chamber door.
Further, the desiccant box for being contained with drier, the desiccant box and the case are provided with the babinet
Body removably connects.
The beneficial effect that is reached of the present invention is：
A kind of protective device for effectively extending box of electric energy meter service life of the present invention includes batch meter body and links-and-links machine
Structure, batch meter body include babinet and chamber door, are fixedly installed rotation axis on babinet, sleeve is fixedly installed on chamber door, reply
Mechanism includes the first reduction torsion spring and the first damper assembly, (the first back-moving spring respectively with rotation axis and sleeve connection so that case
Door has relative to body pivot and the trend of openend closing, the first damper assembly is included two the first damping rings, wherein
With rotating axis connection, another first damping ring and sleeve connection, two the first damping rings mutually paste one the first damping ring
Close and for limiting velocity of rotation of the chamber door relative to babinet.
A kind of protective device for effectively extending box of electric energy meter service life provided by the invention, can be automatically by chamber door
It is automatically closed and closes the openend of babinet, it is ensured that electric energy meter is in the environment of relative closure, is effectively avoided because of the people that works
Electric energy meter caused by member's error is caught in the rain, animal damage etc., effectively extends the service life of the instruments such as electric energy meter.
Brief description of the drawings
, below will be to needed in the embodiment in order to more clearly illustrate the technical solution in the embodiment of the present invention
Attached drawing is simply introduced, it should be apparent that, drawings in the following description are only some embodiments described in the present invention, for
For those of ordinary skill in the art, without creative efforts, other can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the structure diagram of box of electric energy meter protective device provided in an embodiment of the present invention；
Matching relationship schematic diagram of the response agency with batch meter body that Fig. 2 is Fig. 1；
Matching relationship schematic diagram of the time-delay mechanism with batch meter body that Fig. 3 is Fig. 1；
Fig. 4 is the structure diagram at another visual angle of Fig. 3；
Fig. 5 is the structure diagram of the time-delay mechanism of Fig. 4；
Fig. 6 is the structure diagram of torsional spring.
Reference numeral corresponds to as follows：
10- protective devices；
11- batch meter bodies；12- response agencies；13- time-delay mechanisms；
110- babinets；111- chamber doors；112- rotation axis；113- sleeves；114- embedded holes；The first damper assemblies of 120-；121- tune
Save part；122- adjusting screw rods；123- adjusting nuts；124- adjusts compression spring；130- fixed parts；131- rotation sections；132- leading screws；
133- screws head；The second damper assemblies of 134-；135- driving members；136- drives nut.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes.
Fig. 1 is a kind of knot of protective device for effectively extending box of electric energy meter service life provided in an embodiment of the present invention
Structure schematic diagram；Matching relationship schematic diagram of the response agency with batch meter body that Fig. 2 is Fig. 1；Fig. 3 be Fig. 1 time-delay mechanism with
The matching relationship schematic diagram of batch meter body；Fig. 4 is the structure diagram at another visual angle of Fig. 3；Fig. 5 is the delay of Fig. 4
The structure diagram of mechanism；Fig. 6 is the structure diagram of torsional spring.
It is shown in Figure 1, effectively extend the anti-of box of electric energy meter service life an embodiment of the present invention provides a kind of
Protection unit 10, the protective device 10 include batch meter body 11, response agency 12 and time-delay mechanism 13
Batch meter body 11 includes babinet 110 and chamber door 111.
Babinet 110 has the accommodating cavity for being used for accommodating electric energy meter, and accommodating cavity has openend, fixed on babinet 110
Rotation axis 112 is provided with, sleeve 113 is fixedly installed on chamber door 111, sleeve 113 is rotatably sheathed on rotation axis 112, with
Chamber door 111 is set to open or closing open end；
The side of the close chamber door 111 of babinet 110 is provided with magnetic absorption portion, and magnetic absorption portion is surrounded on the surrounding of openend,
Acted on and adsorbed by magnetic absorption between magnetic absorption portion and chamber door 111.
The desiccant box for being contained with drier is provided with babinet 110, desiccant box is removably connected with babinet 110.
Certainly, magnetic absorption portion and desiccant box etc. can also cancel.
Shown in Figure 2, response agency 12 includes the first reduction torsion spring, the first damper assembly 120 and regulating part 121.
(the first back-moving spring is connected with rotation axis 112 and sleeve 113 respectively, so that chamber door 111 has relative to babinet 110
The trend for rotating and closing openend.
First damper assembly 120 includes two the first damping rings, one of them first damping ring is connected with rotation axis 112,
Another first damping ring is connected with sleeve 113, two the first damping rings be bonded to each other and for limit chamber door 111 relative to
The velocity of rotation of babinet 110.
The structure of regulating part 121 can use but be not limited to following scheme：Regulating part 121 includes adjusting screw rod 122, adjusts
Nut 123 and adjusting compression spring 124.
Two the first damping rings are respectively fixed damping ring and active damping ring, and fixed damping ring is rigidly connected in sleeve
113, active damping ring is sheathed on rotation axis 112 along the axially slidable of rotation axis 112, and rotation axis 112 is damped through fixed
Ring.
Adjusting screw rod 122 is fixedly installed on rotation axis 112, and adjusting nut 123 is sheathed on adjusting screw rod 122 and adjusting nut
123 are threadedly coupled with adjusting screw rod 122, adjusting nut 123 can along adjusting screw rod 122 axial movement and closer or far from work
Dynamic damping ring, adjusts compression spring 124 and is sheathed on adjusting screw rod 122 and is respectively held against adjusting nut 123 and active damping ring, adjust spiral shell
Active damping ring is pressed in fixed damping ring by mother 123.
Dismountable connection mode can be used between time-delay mechanism 13 and babinet 110.
Refer to shown in Fig. 3-Fig. 5, time-delay mechanism 13 can be electro-delay system etc., in the present embodiment, time-delay mechanism
13 structure can use but be not limited to following scheme：Time-delay mechanism 13 includes fixed part 130, rotation section 131, second resets and turns round
Spring, leading screw 132, screw the first 133, second damper assembly 134 and driving member 135.
Fixed part 130 is fixedly installed on babinet 110, and rotation section 131 is rotatably arranged at babinet 110, the second damping group
Part 134 includes two the second damping rings, and two the second damping rings are respectively arranged at the opposite side of fixed part 130 and rotation section 131,
Second damper assembly 134 is bonded to each other and for limiting velocity of rotation of the rotation section 131 relative to fixed part 130.
Rotation section 131 is internally provided with driving nut 136, and leading screw 132 is arranged in driving nut 136 and with driving nut
136 coordinate, and screw first 133 and are used to control rotation section 131 to rotate, multiple embedded holes 114 are provided with sleeve 113, multiple to be embedded
Hole 114 is along the circumferentially disposed of sleeve 113 and corresponding with leading screw 132.
When rotation section 131 rotates, axial movement that leading screw 132 can be along sleeve 113 and into and out embedded hole 114,
When leading screw 132 is entered in embedded hole 114, chamber door 111 cannot be rotated relative to babinet 110, when leading screw 132 departs from embedded hole 114,
Chamber door 111 can be rotated relative to babinet 110.
Screw to be driven by driving member 135 between first 133 and rotation section 131 and coordinate, driving member 135 includes first bevel gear
And second bevel gear.
First bevel gear is coaxially disposed and can rotate synchronously with driving nut 136, and second bevel gear is rotatably set
Cooperation is driven in babinet 110 and with first bevel gear.
Screw first 133 to be connected with second bevel gear and for driving second bevel gear to rotate, it is empty positioned at accommodating to screw first 133
Intracavitary portion, it is cylindric to screw first 133.
The circumferential exterior surface for screwing first 133 is provided with anti-skid chequer, anti-skid chequer along screw first 133 it is axially extending.
A kind of protective device 10 for effectively extending box of electric energy meter service life of the present invention includes batch meter body 11
With response agency 12, batch meter body 11 includes babinet 110 and chamber door 111, rotation axis 112, case is fixedly installed on babinet 110
Sleeve 113 is fixedly installed on door 111, response agency 12 includes the first reduction torsion spring and the first damper assembly 120, and first resets
Spring is connected with rotation axis 112 and sleeve 113 respectively, is rotated so that chamber door 111 has relative to babinet 110 and by opening end seal
The trend closed, the first damper assembly 120 include two the first damping rings, one of them first damping ring is connected with rotation axis 112,
Another first damping ring is connected with sleeve 113, two the first damping rings be bonded to each other and for limit chamber door 111 relative to
The velocity of rotation of babinet 110.
Chamber door 111, can be automatically closed and make babinet by box of electric energy meter protective device 10 provided by the invention automatically
110 openend closing, it is ensured that electric energy meter is in the environment of relative closure, effectively avoids the electricity caused by staff slips up
Can table be caught in the rain, animal damage etc., effectively extend the service life of the instruments such as electric energy meter.
In addition, shown in Figure 6, occur multiple torsional springs in the present embodiment, the structure of torsional spring can use existing
Technology, provides example herein：A piece bar is arranged in a pipe, and torsional spring is in pipe and is sheathed on bar, and the both ends of torsional spring are distinguished
It is fixedly connected with bar and pipe.Torsional spring structure involved in the present embodiment can use but be not limited to the example, in the present embodiment
In no longer draw one by one.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the design of the present invention
It is defined with scope, on the premise of design concept of the present invention is not departed from, ordinary skill technical staff is to this hair in this area
The all variations and modifications that bright technical solution is made should all fall into protection scope of the present invention, claimed skill of the invention
Art content, is all documented in technical requirements book.
Claims (6)
1. a kind of protective device for effectively extending box of electric energy meter service life, the protective device include batch meter body
（11）, the batch meter body（11）Including babinet（110）And chamber door（111）, the babinet（110）With for accommodating electric energy
The accommodating cavity of table, the accommodating cavity have openend, the babinet（110）On be fixedly installed rotation axis（112）, it is described
Chamber door（111）On be fixedly installed sleeve（113）, the sleeve（113）Rotatably it is sheathed on the rotation axis（112）, with
Make the chamber door（111）It can open or close the openend；It is characterized in that：Further include response agency（12）, described time
Answer a pager's call structure（12）Including the first reduction torsion spring and the first damper assembly（120）, first reduction torsion spring respectively with the rotation
Axis（112）And sleeve（113）Connection, so that the chamber door（111）With relative to the babinet（110）Rotate and opened described
The trend that mouth end seal is closed, first damper assembly（120）Including two the first damping rings, one of them described first damping ring
With the rotation axis（112）Connection, another described first damping ring and the sleeve（113）Connection, two described first
Damping ring is bonded to each other and for limiting the chamber door（111）Relative to the babinet（110）Velocity of rotation；
Further include time-delay mechanism（13）, the time-delay mechanism（13）Including fixed part（130）, rotation section（131）, second reset turn round
Spring, leading screw（132）, screw head（133）With the second damper assembly（134）, the fixed part（130）It is fixedly installed on the babinet
（110）, the rotation section（131）Rotatably it is arranged at the babinet（110）, second damper assembly（134）Including two
A second damping ring, two second damping rings are respectively arranged at the fixed part（130）With the rotation section（131）Phase
Offside, second damper assembly（134）It is bonded to each other and for limiting the rotation section（131）Relative to the fixed part
（130）Velocity of rotation, the rotation section（131）Be internally provided with driving nut（136）, the leading screw（132）It is arranged in
The driving nut（136）And with the driving nut（136）Coordinate, it is described to screw head（133）For controlling the rotation section
（131）Rotate, the sleeve（113）On be provided with multiple embedded holes（114）, the multiple embedded hole（114）Along the sleeve
（113）It is circumferentially disposed and with the leading screw（132）It is corresponding, the rotation section（131）During rotation, the leading screw（132）Can
Along the sleeve（113）Axial movement and the into and out embedded hole（114）, the leading screw（132）Into described embedding
Apertured（114）When interior, the chamber door（111）Cannot be relative to the babinet（110）Rotate, the leading screw（132）Described in disengaging
Embedded hole（114）When, the chamber door（111）Can be relative to the babinet（110）Rotate；
The response agency（12）Further include regulating part（121）, the regulating part（121）Including adjusting screw rod（122）, adjust spiral shell
It is female（123）With adjusting compression spring（124）, two first damping rings are respectively fixed damping ring and active damping ring, described solid
Determine damping ring and be rigidly connected in the sleeve（113）, the active damping ring is along the rotation axis（112）It is axially slidable
It is sheathed on the rotation axis（112）, the rotation axis（112）Through the fixed damping ring, the adjusting screw rod（122）It is fixed
It is arranged at the rotation axis（112）, the adjusting nut（123）It is sheathed on the adjusting screw rod（122）And the adjusting nut
（123）With the adjusting screw rod（122）It is threadedly coupled, the adjusting nut（123）Can be along the adjusting screw rod（122）Axis
To movement and closer or far from the active damping ring, the adjusting compression spring（124）It is sheathed on the adjusting screw rod（122）And point
The adjusting nut is not propped up（123）With the active damping ring, the adjusting nut（123）The active damping ring is compressed
In the fixed damping ring.
2. a kind of protective device for effectively extending box of electric energy meter service life according to claim 1, its feature exist
In：The time-delay mechanism（13）Further include driving member（135）, it is described to screw head（133）With the rotation section（131）Between pass through
The driving member（135）Transmission coordinates, the driving member（135）Including first bevel gear and second bevel gear, first cone
Gear and the driving nut（136）It is coaxially disposed and can rotates synchronously, the second bevel gear is rotatably arranged at institute
State babinet（110）And be driven and coordinate with the first bevel gear, it is described to screw head（133）It is connected and uses with the second bevel gear
Rotated in the drive second bevel gear, it is described to screw head（133）It is described to screw head inside the accommodating cavity（133）
To be cylindric.
3. a kind of protective device for effectively extending box of electric energy meter service life according to claim 2, its feature exist
In：It is described to screw head（133）Circumferential exterior surface be provided with anti-skid chequer, the anti-skid chequer screws head described in（133）Axial direction
Extension.
4. a kind of protective device for effectively extending box of electric energy meter service life according to claim 1, its feature exist
In：The time-delay mechanism（13）With the babinet（110）Between removably connect.
5. a kind of protective device for effectively extending box of electric energy meter service life according to claim 1, its feature exist
In：The babinet（110）The close chamber door（111）Side be provided with magnetic absorption portion, the magnetic absorption portion is surround
Surrounding in the openend, the magnetic absorption portion and the chamber door（111）Between pass through magnetic absorption effect absorption.
6. a kind of protective device for effectively extending box of electric energy meter service life according to claim 1, its feature exist
In：The babinet（110）Inside it is provided with the desiccant box for being contained with drier, the desiccant box and the babinet（110）Can
The connection of dismounting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711282490.9A CN107966598B (en) | 2017-12-07 | 2017-12-07 | Protective device for effectively prolonging service life of metering box of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711282490.9A CN107966598B (en) | 2017-12-07 | 2017-12-07 | Protective device for effectively prolonging service life of metering box of electric energy meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107966598A true CN107966598A (en) | 2018-04-27 |
| CN107966598B CN107966598B (en) | 2020-03-31 |
Family
ID=61998375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711282490.9A Expired - Fee Related CN107966598B (en) | 2017-12-07 | 2017-12-07 | Protective device for effectively prolonging service life of metering box of electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107966598B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110133343A (en) * | 2019-06-14 | 2019-08-16 | 宁波功成电气有限公司 | A kind of electrical energy metering tank damper door |
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| US5870911A (en) * | 1996-01-22 | 1999-02-16 | Dewalch; Norman Binz | Electric meter box lock |
| JP2010135176A (en) * | 2008-12-04 | 2010-06-17 | Chugoku Electric Power Co Inc:The | Screw-member looseness preventing unit and terminal arrangement using same |
| CN203296553U (en) * | 2013-04-02 | 2013-11-20 | 能诚集团有限公司 | Hinged door closer |
| CN105044415A (en) * | 2015-09-08 | 2015-11-11 | 国家电网公司 | Power metering box multiple-protection device |
| CN106338631A (en) * | 2016-11-16 | 2017-01-18 | 国网山东省电力公司蓬莱市供电公司 | Protection device for metering box of electric energy meter |
| CN106556723A (en) * | 2016-11-28 | 2017-04-05 | 国网山东省电力公司蓬莱市供电公司 | A kind of box of electric energy meter preventer |
| CN106841722A (en) * | 2017-01-23 | 2017-06-13 | 晋江市速龙电子科技有限公司 | A kind of ammeter box with anti-theft feature |
| CN106918729A (en) * | 2017-04-19 | 2017-07-04 | 王慧超 | A kind of efficient fixed ammeter box erecting device |
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2017
- 2017-12-07 CN CN201711282490.9A patent/CN107966598B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5870911A (en) * | 1996-01-22 | 1999-02-16 | Dewalch; Norman Binz | Electric meter box lock |
| JP2010135176A (en) * | 2008-12-04 | 2010-06-17 | Chugoku Electric Power Co Inc:The | Screw-member looseness preventing unit and terminal arrangement using same |
| CN203296553U (en) * | 2013-04-02 | 2013-11-20 | 能诚集团有限公司 | Hinged door closer |
| CN105044415A (en) * | 2015-09-08 | 2015-11-11 | 国家电网公司 | Power metering box multiple-protection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110133343A (en) * | 2019-06-14 | 2019-08-16 | 宁波功成电气有限公司 | A kind of electrical energy metering tank damper door |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107966598B (en) | 2020-03-31 |
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