CN109239441A - Split-core type meter loop switch device and split-core type meter - Google Patents
Split-core type meter loop switch device and split-core type meter Download PDFInfo
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- CN109239441A CN109239441A CN201811330334.XA CN201811330334A CN109239441A CN 109239441 A CN109239441 A CN 109239441A CN 201811330334 A CN201811330334 A CN 201811330334A CN 109239441 A CN109239441 A CN 109239441A
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- 239000004020 conductor Substances 0.000 claims abstract description 95
- 230000007935 neutral effect Effects 0.000 claims description 12
- 238000004146 energy storage Methods 0.000 claims description 8
- 230000005489 elastic deformation Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 14
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000005381 potential energy Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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Abstract
The present invention provides a kind of split-core type meter loop switch device and split-core type meters, it is related to wireline inspection technical field, split-core type meter loop switch device provided by the invention includes stored energy mechanism and the movement mechanism that connect with stored energy mechanism, movement mechanism is at least partially conductor, stored energy mechanism is connect with motion switch mechanism with one in left conductor and right conductor for driving movement mechanism to move between left conductor and right conductor.Movement mechanism in split-core type meter loop switch device provided by the invention can be switched by stored energy mechanism and movement mechanism connect with some contact, without by split-core type meter from route or eminence removes manual switching circuit, the detection of easy access personnel, raising detection efficiency.
Description
Technical field
The present invention relates to wireline inspection technical fields, more particularly, to a kind of split-core type meter loop switch device and split-core type meter.
Background technique
When power circuit breaks down, common method is to shake survey with megger.The result that megger shakes survey can only judge the section
Whether route is faulty, but cannot judge in which orientation.
Above-mentioned function may be implemented using two points of principles.On the line by split-core type meter suspension, it which is provided with left conductor and the right side led
Body, left conductor and right conductor can be connect with pressure regulator respectively by switching switch, applied voltage on conducting wire, measured with split-core type meter
The fault current size of hitch point two sides, it can judge the orientation of failure.But existing split-core type meter needs manual switching circuit
It is just capable of measuring the fault current size of hitch point two sides, the detection of personnel not easy to overhaul influences detection efficiency.
Therefore, the split-core type meter loop switch device and split-core type meter for how providing a kind of easy access personnel detection are art technologies
One of personnel's technical problem to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of split-core type meter loop switch device and split-core type meters, can pass through stored energy mechanism and movement
Mechanism switching circuit, it is not necessary that split-core type meter to be removed to manual switching circuit from route, the detection of easy access personnel improves detection effect
Rate.
To achieve the above object, the present invention the following technical schemes are provided:
In a first aspect, the present invention provides a kind of split-core type meter loop switch device, including stored energy mechanism and with the stored energy mechanism
The movement mechanism of connection, the movement mechanism are at least partially conductor, and the stored energy mechanism is for driving the movement mechanism
It moves between left conductor and right conductor, is connect with switching the movement mechanism with one in left conductor and right conductor.
Further, the stored energy mechanism is power energy storage mechanism or machinery energy storage mechanism.
Further, the movement mechanism is reciprocating moving mechanism or intermittent movement mechanism.
Further, the stored energy mechanism includes bracing wire and the energy storing members that connect with the bracing wire, and the bracing wire is for drawing
The energy storing members are moved, so that the energy storing members generate elastic deformation.
Further, the energy storing members are clockwork spring.
Further, the movement mechanism includes driving link and driven member, and the driving link is connect with the stored energy mechanism,
The driven member and the driving link are sequentially connected, and can under the driving of the driving link between left conductor and right conductor
Movement.
Further, the driving link includes gear, the driven member be the rack gear engaged with the gear or not exclusively
Gear.
Further, the driving link includes screw rod, the driven member include be set in sleeve outside the screw rod and
With the changer lever of the sleeve connection, the sleeve is connect with the screw flight.
Further, the movement mechanism includes the eccentric wheel connecting with the stored energy mechanism.
Second aspect, the present invention also provides any in a kind of split-core type meter, including caliper, left conductor, right conductor and first aspect
Split-core type meter loop switch device described in kind, the left conductor and the right conductor are set on the caliper.
Further, the cross section of the left conductor and the right conductor is arc, and the left conductor and the right side
Conductor extends each along the extending direction of route.
Further, the split-core type meter further includes pressure regulator, and the pressure regulator is connect with the split-core type meter loop switch device, institute
The voltage for stating pressure regulator is U, and the frequency of the pressure regulator is f, and the two meets simultaneously:
2 π fL >, 2 Ω；
U/2 π fL < 0.3mA；
Wherein, L be route on, in the voltage transformer of neutral-point solid ground, the value of any one phase inductance；Or route
On, in the voltage transformer of the grounded coil ground connection of neutral point, the sum of the value of any one phase inductance and neutral earthing compensator inductance.
Split-core type meter loop switch device and split-core type meter provided by the invention can generate it is following the utility model has the advantages that
Setting, left conductor are located at the left side of hitch point, and right conductor is located at the right side of hitch point.Split-core type meter circuit is stated in use
When switching device, stored energy mechanism can automatic traction movement mechanism moved between left conductor and right conductor.When movement mechanism with
When left conductor contacts, movement mechanism is free of conductors with the right side, can detect at this time to the route in left side；When movement mechanism and the right side
When conductor contacts, movement mechanism is free of conductors with a left side, can detect at this time to the route on right side.
Movement mechanism energy for compared with the existing technology, in the split-core type meter loop switch device of first aspect present invention offer
Enough connect by stored energy mechanism and movement mechanism switching with some contact, without by split-core type meter from route or eminence is removed manually
Switching circuit, the detection of easy access personnel improve detection efficiency.
For compared with the existing technology, the split-core type meter that second aspect of the present invention provides is convenient to examine line conduction state
The split-core type meter loop switch device surveyed, and provided with first aspect present invention, thus the pincers provided with first aspect present invention
All beneficial effects possessed by table loop switch device.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram for split-core type meter loop switch device that the embodiment of the present invention one provides；
Fig. 2 is a kind of structural schematic diagram of split-core type meter loop switch device provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of structural schematic diagram for split-core type meter loop switch device that the embodiment of the present invention three provides；
Fig. 4 is the voltage transformer high-pressure side structural representation of the neutral-point solid ground of route provided in an embodiment of the present invention
Figure；
Fig. 5 is that the voltage transformer of the grounded coil ground connection of neutral point of route provided in an embodiment of the present invention is on high-tension side
Structural schematic diagram.
Icon: 1- stored energy mechanism；11- bracing wire；12- energy storing members；2- movement mechanism；21- driving link；211- tooth
Wheel；212- screw rod；22- driven member；221- rack gear；222- sleeve；223- changer lever；23- eccentric wheel；The left conductor of 3-；
The right conductor of 4-；5- pressure regulator；6- neutral point；7- test point；8- insulating bar.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1 is a kind of structural schematic diagram for split-core type meter loop switch device that the embodiment of the present invention one provides；Fig. 2 is the present invention
A kind of structural schematic diagram for split-core type meter loop switch device that embodiment two provides；Fig. 3 is one kind that the embodiment of the present invention three provides
The structural schematic diagram of split-core type meter loop switch device；Fig. 4 is the electricity of the neutral-point solid ground of route provided in an embodiment of the present invention
Press transformer high voltage side structural schematic diagram；Fig. 5 is the grounded coil ground connection of neutral point of route provided in an embodiment of the present invention
The on high-tension side structural schematic diagram of voltage transformer.
The embodiment of first aspect present invention provides a kind of split-core type meter loop switch device, as shown in Figure 1 to Figure 3, including storage
Energy mechanism 1 and the movement mechanism 2 connecting with stored energy mechanism 1, movement mechanism 2 are at least partially conductor, and stored energy mechanism 1 is for driving
Dynamic movement mechanism 2 moves between left conductor 3 and right conductor 4, with one in motion switch mechanism 2 and left conductor 3 and right conductor 4
A connection.
Setting, left conductor are located at the left side of hitch point, and right conductor is located at the right side of hitch point.Split-core type meter circuit is stated in use
When switching device, stored energy mechanism can automatic traction movement mechanism moved between left conductor and right conductor.When movement mechanism with
When left conductor contacts, movement mechanism is free of conductors with the right side, can detect at this time to the route in left side；When movement mechanism and the right side
When conductor contacts, movement mechanism is free of conductors with a left side, can detect at this time to the route on right side.
Fortune for compared with the existing technology, in the split-core type meter loop switch device of the embodiment offer of first aspect present invention
Motivation structure can be connect by stored energy mechanism and movement mechanism switching with some contact, be not necessarily to split-core type meter from route or eminence
Manual switching circuit is removed, the detection of easy access personnel improves detection efficiency.
It should be noted that stored energy mechanism 1 is power energy storage mechanism or machinery energy storage mechanism.Wherein, power energy storage mechanism
It can be battery, solar battery etc..
In some embodiments, when stored energy mechanism 1 is machinery energy storage mechanism, stored energy mechanism 1 may include 11 He of bracing wire
The energy storing members 12 connecting with bracing wire 11, bracing wire 11 is for pulling energy storing members 12, so that energy storing members 12 generate elastic deformation.Specifically exist
In use process, bracing wire 11 is pulled, energy storing members 12 generate elastic deformation, to have certain elastic potential energy, the elastic potential energy
Driving movement mechanism 2 moves between left conductor and right conductor.
Wherein energy storing members 12 are clockwork spring, and clockwork spring includes scroll spring and the shaft that connect with scroll spring inner ring end, drawing
Line 11 is wrapped in shaft, and after pulling bracing wire 11, shaft rotates, to drive scroll spring that elastic deformation, scrollwork occurs
Spring has certain elastic potential energy, and elastic potential energy driving movement mechanism 2 moves between left conductor and right conductor.
Specifically, energy storing members 12 further include restriction component matched with clockwork spring, and working principle is similar to mechanical clock, energy
The elastic potential energy of enough energy storage and the speed release clockwork spring according to setting.
In further embodiments, stored energy mechanism 1 may also be only clockwork spring, and clockwork spring includes scroll spring and and scroll spring
The shaft of inner ring end connection.When in use, service personnel directly can make scroll spring that elastic deformation occur by rotating shaft,
To drive movement mechanism 2 to move between left conductor and right conductor.
Alternatively, stored energy mechanism 1 may be the motor for directly driving the movement of movement mechanism 2, the positive and negative rotation for passing through motor is real
Now switching back and forth.
It should be noted that movement mechanism 2 is reciprocating moving mechanism or intermittent movement mechanism.Such as: movement mechanism 2
Including partial gear and the rack gear engaged with partial gear, perhaps movement mechanism 2 includes that ratchet or movement mechanism 2 wrap
Include cam.
It is different according to the structure of movement mechanism 2, it can specifically be divided into following three embodiments:
Embodiment one:
In the present embodiment one, movement mechanism 2 includes driving link 21 and driven member 22, and driving link 21 is connect with stored energy mechanism 1,
Driven member 22 and driving link 21 are sequentially connected, and can move between left conductor and right conductor under the driving of driving link 21.
When in use, stored energy mechanism 1 drives driving link 21 to rotate, and driven member 22 is used to convert the rotation of driving link 21 to straight line and transport
It is dynamic.
In the present embodiment one, as shown in Figure 1, driving link 21 includes gear 211, driven member 22 includes engaging with gear 211
Rack gear 221 or partial gear, rack gear or partial gear are conductor.With stored energy mechanism 1 be clockwork spring, driven member 22 is rack gear
It is specifically described for 221.The connection of the inner ring end of gear and scroll spring.The shaft on scroll spring is rotated, so that whirlpool
Coil spring is in energy accumulating state.Scroll spring band moving gear rotates in the detection process, and rack gear is led under the drive of gear on a left side
It is moved between body and right conductor, realization detects the route of hitch point two sides.
In the present embodiment one, it should be noted that it includes support base, stored energy mechanism 1 that above-mentioned split-core type meter loop switch device, which is protected,
It is set in support base with movement mechanism 2.Guide rail is set on support base, rack gear 221 is slidably connected with guide rail.
Embodiment two:
In the present embodiment two, movement mechanism 2 includes driving link 21 and driven member 22, and driving link 21 is connect with stored energy mechanism 1,
Driven member 22 and driving link 21 are sequentially connected, and can move between left conductor and right conductor under the driving of driving link 21.
When in use, stored energy mechanism 1 drives driving link 21 to rotate, and driven member 22 is used to convert the rotation of driving link 21 to straight line and transport
It is dynamic.
In the present embodiment two, as shown in Fig. 2, driving link 21 includes screw rod 212, driven member 22 includes being set in screw rod 212
External sleeve 222 and the changer lever 223 connect with sleeve 222, sleeve 222 are threadedly coupled with screw rod 212, and sleeve 222 and
Changer lever 223 is conductor.It is specifically described so that stored energy mechanism 1 is clockwork spring as an example.The inner ring end of screw rod 212 and scroll spring
Connection.The shaft on scroll spring is rotated, so that scroll spring is in energy accumulating state.Scroll spring drives spiral shell in the detection process
Bar 212 rotates, and sleeve 222 is moving between left conductor and right conductor under the drive of screw rod 212, realizes to hitch point two sides
Route is detected.
In the present embodiment two, it should be noted that it includes support base, stored energy mechanism 1 that above-mentioned split-core type meter loop switch device, which is protected,
It is set in support base with movement mechanism 2.Guide rail is set on support base, sleeve 222 is slidably connected with guide rail.
Embodiment three:
In the present embodiment three, as shown in figure 3, movement mechanism 2 includes the eccentric wheel 23 connecting with stored energy mechanism 1, and eccentric
Wheel is conductor.It is specifically described so that stored energy mechanism 1 is clockwork spring as an example.The connection of the inner ring end of eccentric wheel and scroll spring.Turn
Shaft on dynamic scroll spring, so that scroll spring is in energy accumulating state.Scroll spring band movable eccentric wheel 23 in the detection process
It rotates, can successively contact left conductor and right conductor apart from the farther away one end of its pivot center on eccentric wheel 23, realize to hitch point
The route of two sides is detected.
In the present embodiment three, it should be noted that it includes support base, stored energy mechanism 1 that above-mentioned split-core type meter loop switch device, which is protected,
It is set in support base with movement mechanism 2.Eccentric wheel 23 and support base are rotatablely connected.
The embodiment of second aspect of the present invention provides a kind of split-core type meter, the split-core type meter packet that the embodiment of second aspect of the present invention provides
Caliper, left conductor 3, right conductor 4 and above-mentioned split-core type meter loop switch device are included, left conductor 3 and right conductor 4 are set on caliper.
For compared with the existing technology, the split-core type meter that the embodiment of second aspect of the present invention provides is convenient to line conduction state
The split-core type meter loop switch device for being detected, and being provided with first aspect present invention, to be mentioned with first aspect present invention
All beneficial effects possessed by the split-core type meter loop switch device of confession.
It being specifically described by taking Fig. 1 as an example, the direction towards Fig. 1, caliper each side has a side, wherein
Left conductor 3 is connect with the left side of caliper 1, and right conductor 4 is connect with the right side of caliper.
In some embodiments, the cross section of left conductor 3 and right conductor 4 is arc, and left conductor 3 and right conductor 4 are equal
Extend along the extending direction of route.
In at least one embodiment, the cross section of left conductor 3 and right conductor 4 is arc-shaped.
Specifically, in order to be more convenient the storage of above-mentioned split-core type meter, development length can be 1cm, 2cm, 3cm, 4cm etc..For
On the line, development length can be the longer length such as 5cm, 10cm, 15cm, 20cm for the suspension for enabling split-core type meter stable
Degree.
On the basis of the above embodiments, split-core type meter further includes insulating bar 8, and insulating bar 8 is connect with caliper, when in use, can
Caliper is hung to route with hand-held insulating bar 8, enables left conductor 3 and right conductor 4 and wiring circuit contact.
As shown in Figure 4 and Figure 5, split-core type meter further includes pressure regulator 5 and above-mentioned split-core type meter loop switch device, pressure regulator 5 and split-core type meter
The connection of loop switch device, the voltage of pressure regulator 5 are U, and the frequency of the pressure regulator 5 is f, and the two meets simultaneously:
2 π fL >, 2 Ω；
U/2 π fL < 0.3mA；
Wherein, L is on route, in the voltage transformer that neutral point 6 is directly grounded, the value of any one phase inductance, i.e. in Fig. 4
The value of A phase, B phase or C phase any one inductance；Or on route, in the voltage transformer of the grounded coil of neutral point 6 ground connection, appoint
Anticipate the sum of the value of a phase inductance and neutral earthing compensator inductance, i.e. in Fig. 5 A phase, B phase or C phase any one and neutral earthing compensator inductance it
With.Wherein, Ω and mA is unit.
As shown in Figure 4 and Figure 5, the point that test point 7 is contacted by route with left conductor 3 or right conductor 4.
Specifically when in use, movement mechanism 2 is electrically connected with pressure regulator 5, voltage regulator operation ground connection.Pressure regulator 5 passes through switching
Voltage is added on route two sides respectively by circuit, is measured by electric current of the split-core type meter to two circuits, by the size phase of two electric currents
The route for comparing i.e. knowable which side is faulty line.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (12)
1. a kind of split-core type meter loop switch device, which is characterized in that connect including stored energy mechanism (1) and with the stored energy mechanism (1)
Movement mechanism (2), the movement mechanism (2) at least partially conductor, the stored energy mechanism (1) is for driving the fitness machine
Structure (2) moves between left conductor (3) and right conductor (4), to switch the movement mechanism (2) and left conductor (3) and right conductor
(4) connection in.
2. split-core type meter loop switch device according to claim 1, which is characterized in that the stored energy mechanism (1) is electric power storage
It can mechanism or machinery energy storage mechanism.
3. split-core type meter loop switch device according to claim 1, which is characterized in that the movement mechanism (2) is reciprocating
Movement mechanism or intermittent movement mechanism.
4. split-core type meter loop switch device according to claim 1, which is characterized in that the stored energy mechanism (1) includes bracing wire
(11) and with the bracing wire (11) energy storing members (12) connecting, the bracing wire (11) are used to pull the energy storing members (12), so that
The energy storing members (12) generate elastic deformation.
5. split-core type meter loop switch device according to claim 4, which is characterized in that the energy storing members (12) are clockwork spring.
6. split-core type meter loop switch device according to claim 1, which is characterized in that the movement mechanism (2) includes actively
Part (21) and driven member (22), the driving link (21) connect with the stored energy mechanism (1), the driven member (22) and the master
Moving part (21) transmission connection, and can be under the driving of the driving link (21) in the left conductor (3) and the right conductor (4)
Between move.
7. split-core type meter loop switch device according to claim 6, which is characterized in that the driving link (21) includes gear
(211), the driven member (22) is the rack gear (221) or partial gear engaged with the gear (211).
8. split-core type meter loop switch device according to claim 6, which is characterized in that the driving link (21) includes screw rod
(212), the driven member (22) includes being set in the external sleeve (222) of the screw rod (212) and connecting with the sleeve (222)
The changer lever (223) connect, the sleeve (222) are threadedly coupled with the screw rod (212).
9. split-core type meter loop switch device according to claim 1, which is characterized in that the movement mechanism (2) includes and institute
State the eccentric wheel (23) of stored energy mechanism (1) connection.
10. a kind of split-core type meter, which is characterized in that including caliper, left conductor (3), right conductor (4) and any one of such as claim 1-9
The split-core type meter loop switch device, the left conductor (3) and the right conductor (4) are set on the caliper.
11. split-core type meter according to claim 10, which is characterized in that the left conductor (3) and the right conductor (4) it is transversal
Face is arc, and the left conductor (3) and the right conductor (4) extend each along the extending direction of route.
12. split-core type meter according to claim 10, which is characterized in that the split-core type meter further includes pressure regulator (5), the pressure regulator
(5) it being connect with the split-core type meter loop switch device, the voltage of the pressure regulator (5) is U, and the frequency of the pressure regulator (5) is f,
The two meets simultaneously:
2 π fL >, 2 Ω；
U/2 π fL < 0.3mA；
Wherein, L be route on, in the voltage transformer that neutral point (6) is directly grounded, the value of any one phase inductance；Or on route,
In the voltage transformer of the grounded coil ground connection of neutral point (6), the sum of the value of any one phase inductance and neutral earthing compensator inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811330334.XA CN109239441A (en) | 2018-11-08 | 2018-11-08 | Split-core type meter loop switch device and split-core type meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811330334.XA CN109239441A (en) | 2018-11-08 | 2018-11-08 | Split-core type meter loop switch device and split-core type meter |
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| CN109239441A true CN109239441A (en) | 2019-01-18 |
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| CN201811330334.XA Pending CN109239441A (en) | 2018-11-08 | 2018-11-08 | Split-core type meter loop switch device and split-core type meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109823906A (en) * | 2019-01-31 | 2019-05-31 | 重庆青年职业技术学院 | A kind of high-efficient automatic process units |
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