CN216145778U

CN216145778U - Intelligent terminal access device

Info

Publication number: CN216145778U
Application number: CN202121731841.1U
Authority: CN
Inventors: 过福兴; 盛继光; 张家利
Original assignee: Hangzhou Join Electric Technology Co ltd
Current assignee: Hangzhou Join Electric Technology Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-03-29
Anticipated expiration: 2031-07-28

Abstract

The utility model provides an intelligent terminal access device, which comprises a base, wherein a row of terminal plug-in posts and at least one row of meter plug-in posts are arranged on the base, plug bushes are respectively arranged in the terminal plug-in posts and the meter plug-in posts, and at least part of the plug bushes arranged in the terminal plug-in posts are in short circuit through short circuit elastic sheets; the side part of the base is provided with a wiring part, the wiring part comprises a plurality of wiring terminals corresponding to the plug-in sleeves of the plug-in posts, and the bottom of the base is provided with a conductive connecting piece for connecting the wiring terminals with the terminal plug-in posts and the meter plug-in sleeves of the meter plug-in posts; the terminal plug and the meter plug respectively comprise a plug shell and an inserting core arranged in the plug shell, the inserting core is provided with an inserting needle corresponding to the inserting sleeve, and the plug shell is provided with a wire inlet part; and an insulating partition plate for separating the short-circuit elastic sheet from the plug bush in a plug-in state is further arranged on the plug core of the terminal plug.

Description

Intelligent terminal access device

Technical Field

The utility model relates to the technical field of power equipment, in particular to an intelligent terminal access device.

Background

In a power grid system, a secondary circuit with a current and voltage transformer is generally adopted to indirectly measure or measure parameters such as current, voltage, power, phase, frequency and the like in a main circuit. Under the charged state, the current loop of the secondary loop can not be opened, otherwise, the open circuit of the secondary coil of the current transformer can generate high voltage, the insulation of the secondary winding and the wiring terminal can be damaged, and the personal safety can be seriously threatened. In this case, it is a difficult problem how to extract the current and voltage in the secondary loop to access the intelligent terminal for the operation of measuring the electrical parameters without disconnecting the secondary loop. The existing operation mode needs to carry out wiring operation on a plurality of current and voltage loops, the operation flow is complex, and the operation risk is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an intelligent terminal access device to solve the problems that the operation flow is complex and the operation risk is high when the current in a secondary loop is led out in the conventional operation mode.

The following technical scheme is specifically adopted to solve the problem:

an intelligent terminal access device, comprising:

the base is provided with at least one row of terminal insertion columns and at least one row of meter insertion columns, insertion sleeves are respectively arranged in the terminal insertion columns and the meter insertion columns, and at least part of the insertion sleeves arranged in the terminal insertion columns are in short circuit through short circuit elastic sheets; the side part of the base is provided with a wiring part, the wiring part comprises a plurality of wiring terminals corresponding to the plug-in sleeves of the plug-in posts, and the bottom of the base is provided with a conductive connecting piece for connecting the wiring terminals with the terminal plug-in posts and the meter plug-in sleeves of the meter plug-in posts;

the terminal plug and the meter plug respectively comprise a plug shell and an inserting core arranged in the plug shell, the inserting core is provided with an inserting needle corresponding to the inserting sleeve, and the plug shell is provided with a wire inlet part; the plug core of the terminal plug is also provided with an insulating partition plate for separating the short-circuit elastic sheet from the plug bush in a plug-in state;

the plug bushes in the meter plug-in column, the plug bushes in the terminal plug-in column and the connector lugs in the connector part are connected through conductive connecting pieces to form a plurality of current-voltage loops and a plurality of grounding loops, wherein the plug bushes in the voltage loops and the connector lugs corresponding to the plug bushes are connected through the same conductive connecting piece, the connector lugs in the current flowing loops are directly connected with the plug bushes in the meter plug-in column through the conductive connecting pieces, the short-circuit elastic pieces in the current flowing loops are in short circuit with two adjacent plug bushes in the terminal plug-in column, and the two short-circuit plug bushes are respectively connected with the plug bushes in the meter plug-in column and the corresponding connector lugs through the conductive connecting pieces.

Furthermore, the meter inserting columns are arranged in two rows, and inserting sleeves at corresponding positions in the two rows of meter inserting columns are connected with each other.

Further, the base includes base casing and end cover board, and each row of spliced pole sets up in the front of base casing side by side, the base casing back is equipped with the installation department that corresponds the spliced pole, the plug bush is installed in the spliced pole to by the screw fixation in installation department.

Furthermore, wiring portion is including locating the base side and corresponding a plurality of wiring holes of plug post, the wiring head is located in the wiring hole, correspond on the base wiring hole and be equipped with a plurality of recesses, be equipped with the screw that is used for fixed end of a thread in the recess.

Further, the back of the base shell is also provided with a wiring groove communicated with the installation part and the wiring part, and the conductive connecting piece is arranged in the wiring groove.

Furthermore, insulating fillers are filled in the wiring grooves and the back of the whole base shell, and the bottom cover plate covers the insulating fillers and is fixedly connected with the base shell through screws.

Furthermore, the front face of the base shell is provided with a first annular surrounding barrier surrounding the meter plug-in post and a second annular surrounding barrier surrounding the terminal plug-in post, at least part of the first annular surrounding barrier is matched with the shape of a plug shell of the meter plug, and at least part of the second annular surrounding barrier is matched with the shape of the terminal plug.

Furthermore, the first annular enclosure is provided with at least one outer convex part, and a convex part matched with the outer convex part in position and shape is arranged on the plug shell of the meter plug.

Furthermore, a pair of communication plug connectors are arranged on the base, and the communication plug connectors at corresponding positions in the pair of communication plug connectors are connected with each other.

Furthermore, the device also comprises an outer shell, wherein the outer shell is covered on the base and is used for covering the terminal plug and/or the meter plug.

Furthermore, the top of the plug shell of the terminal plug and the meter plug is provided with a plane ridge part longitudinally penetrating the whole shell, and the inside of the outer shell is provided with a convex beam corresponding to the plane ridge part.

The utility model has the following beneficial effects:

the intelligent terminal access device can be conveniently accessed into a secondary circuit by arranging the independent base, the terminal plug and the meter plug, and can lead out the current in the secondary circuit by plugging when the intelligent terminal is required to be connected, thereby measuring the current and voltage parameters in the secondary circuit. Meanwhile, the anti-misplug and anti-disassembly device has the functions of preventing misplug and disassembly, and effectively improves safety.

Drawings

Fig. 1 is an assembly diagram of an intelligent terminal access device according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a front side of a base of an intelligent terminal access device according to an embodiment of the present invention.

Fig. 3 is a schematic side view of a base of an intelligent terminal access device according to an embodiment of the present invention.

Fig. 4 is a schematic view of a back surface of a base of an intelligent terminal access device according to an embodiment of the present invention.

Fig. 5 is a schematic view of an embodiment of an intelligent terminal access device according to the present invention, in which a bottom cover is removed from a back surface of a base.

FIG. 6 is a schematic diagram of an oblique side view of the embodiment shown in FIG. 5.

Fig. 7 is a schematic diagram of a line connection in a base of an embodiment of an intelligent terminal access device according to the present invention.

Fig. 8 is a schematic structural diagram of a terminal plug of an embodiment of the intelligent terminal access device of the present invention.

Fig. 9 is a schematic structural diagram of a meter plug of an embodiment of the smart terminal access device of the present invention.

Fig. 10 is a schematic external view of an intelligent terminal access device according to an embodiment of the present invention, in which an external housing is installed.

Detailed Description

For a further understanding of the utility model, reference will now be made to the preferred embodiments of the utility model by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the utility model, and not to limit the scope of the claims.

Referring to fig. 1 and 2, an embodiment of the present invention provides an intelligent terminal access device, including a base 1, where the base 1 is provided with a row of terminal insertion posts 13 and two rows of

meter insertion posts

11 and 12, the terminal insertion posts and the meter insertion posts are respectively provided with insertion sleeves, at least part of the insertion sleeves arranged in the terminal insertion posts are short-circuited through a short-circuit portion 131, and the insertion sleeves at corresponding positions in the two rows of meter insertion posts are connected with each other. In addition, the side of the base 1 is provided with a wiring part 14 for connecting a secondary circuit, the wiring part at least comprises a plurality of wiring terminals corresponding to the plug-in post plug bushes, and the bottom of the base 1 is also provided with a conductive connecting piece for connecting the wiring terminals with the terminal plug-in post and the meter plug-in post plug bushes.

Also included are a terminal plug 4 and two

meter plugs

2, 3. Each plug is internally provided with a plug core, and the plug core is provided with a group of contact pins corresponding to the plug bushes in the plug posts on the base, so that the plug can be plugged on the base. In addition, the terminal plug 4 is provided with a connection portion 41 for connecting the smart terminal, and the two

meter plugs

2, 3 are each provided with a

connection portion

21, 31 for connecting the meters.

In addition, the base 1 is provided with interlocking means 16a, 16b for restricting the removal of the meter plug when only one meter plug is plugged into the base, and for releasing the restriction when two meter plugs are simultaneously plugged into the base.

In a preferred illustrated embodiment, referring to fig. 4, the base 1 comprises a base housing and a bottom cover plate 5, the bottom cover plate 5 being fixedly mounted to the back of the base housing by screws. Referring to fig. 5-7, the back of the base housing is provided with mounting portions 101 corresponding to the terminal pin and the meter pin, and each sleeve 102 is mounted in the terminal pin or the meter pin via the mounting portions and fixed at the mounting portions by screws.

Referring to fig. 1-3 and 6-7, the wiring portion 14 is disposed on a side portion of the base 1, and includes a plurality of wiring holes 141 disposed on a side surface of the base 1, each of which is located at a position corresponding to a position of the meter insertion post and in which a wiring terminal 143 is mounted. Meanwhile, a groove 142 is formed in the base corresponding to each wiring hole 141, and a screw for fixing a wire end is arranged in each groove. By adopting the structure, the screw of the contact connector lug is hidden in the groove, so that the situation of accidental electric shock or short circuit can be avoided as much as possible.

Referring to fig. 5-7, the back of the base housing is provided with a wiring slot 103 for communicating the mounting portion and the wiring portion corresponding to the mounting position, and a conductive connecting member 104 for connecting the plug bush and the connector lug corresponding to the connecting position is installed in the wiring slot 103. The part of the conductive connecting piece 104 connected with the plug bush is designed into a circular ring shape matched with the bottom of the plug bush, and is fixed at the mounting part on the back of the base by a screw and the plug bush in an integrated manner.

As a further preferred embodiment, in this embodiment, the insulating filler is filled in each wiring groove on the back surface of the base housing and the back surface of the whole base housing, and the bottom cover plate 5 covers the insulating filler after being installed, so as to achieve better insulating and sealing effects, avoid the short circuit caused by the influence of the erosion of each charged component by the environment, and reduce the risk of accidental electric shock.

Referring to fig. 2 and 7, the shorting structure 131 includes a self-shorting dome 132 and its supporting protection structure.

Referring to fig. 5-7, the plug bushes corresponding to the plug-in posts on the base 1 and the plug-in posts in the terminal plug-in posts are respectively connected by conductive connecting members to form a plurality of current-voltage loops and a plurality of grounding loops. Each plug bush in one group of voltage loop 191 and the connector lug of the corresponding connection part are connected through the same conductive connecting piece, the connector lug in the current flowing loop 192 is directly connected with two plug bushes in the meter plug-in column through the conductive connecting piece, the short-circuit elastic sheet 132 in the current flowing loop 193 and the current flowing loop 194 is in short circuit with two adjacent plug bushes in the terminal plug-in column, and the two short-circuit plug bushes are respectively connected with two plug bushes in the meter plug-in column and the corresponding connector lug through the conductive connecting pieces. The ground circuit 195 is similar to the voltage circuit 191 in that each plug bush and the connector lug of the corresponding connector portion are connected by the same conductive connector.

On the other hand, referring to fig. 8, the terminal plug 4 includes a plug housing 42 and a terminal ferrule 43 disposed in the plug housing 42, and the terminal ferrule 43 is provided with a plurality of pins 44 corresponding to the terminal posts on the base. The terminal ferrule 43 fits snuggly within the plug housing 42, and the edge of the plug housing 42 forms a mating groove around the terminal ferrule 43 that mates with the terminal posts on the base. There is a wiring space between the back of the terminal insertion core 43 and the plug housing 42, when the terminal plug 4 is connected with the intelligent terminal, the connection wires enter the plug housing 42 through the wiring portion 41 and are respectively connected with each pin on the terminal insertion core 43. In addition, the terminal insertion core 43 is further provided with a short-circuit elastic sheet 132 for separating the contact between the terminal insertion posts and the insulating partition plate 45 of the insertion sleeve in the insertion state. When the terminal plug 4 is not inserted, two contact pins of the short-circuit elastic sheet 132 are contacted with the plug bushes on two sides so as to short-circuit two adjacent plug bushes in the terminal plug-in column; when the terminal plug 4 is inserted, the insulating partition 45 is inserted between the two contact pins of the short-circuit elastic piece 132 and the plug bush in contact with the contact pins, so as to isolate the contact between the two contact pins and the plug bush, and eliminate the short-circuit state of the adjacent plug bushes. When the terminal plug is pulled out again, the short-circuit elastic piece 132 automatically restores the short-circuit state.

Referring to fig. 9, the meter plug 2 includes a plug housing 22 and a ferrule 23 disposed in the plug housing, and the ferrule 23 is provided with a plurality of pins 24 corresponding to the sockets of the meter plug-in posts on the base. The ferrule 23 fits snugly within the plug housing 22, and the edge of the plug housing 22 forms a mating groove around the ferrule 23 that mates with the meter posts on the base. There is a wiring space between the back of the ferrule 23 and the plug housing 22, and when the meter plug 2 is connected to the meter, the wiring enters the plug housing 22 through the wiring portion 21 and is connected to each pin on the ferrule 23. The ferrule 23 has a plurality of glue stealing holes 231 for manufacturing reasons. In addition, the plug housing 22 is provided with a snap groove 221 matching with the interlocking

mechanisms

16a and 16 b.

In the present embodiment, the structure of the other meter plug 3 is similar to that of the meter plug 2, and will not be described in detail.

Referring to fig. 2 and 3, as a further preferred embodiment, in this embodiment, the front surface of the base housing is provided with a first annular enclosure 17 surrounding two rows of meter plug-in posts, and the overall shape of the first annular enclosure 17 is matched with the shape of the plug housing of the meter plugs and 3, so that when the meter plugs 2 and 3 are inserted, the first annular enclosure 17 wraps around the plug housing, which not only facilitates alignment when the plugs are inserted, but also achieves a better shielding and shielding effect.

At the same time, a second annular enclosure 18 is also provided on the base 1 around the terminal plug-in stud 13, the second annular enclosure 18 being configured to match the outer shape of the plug housing 42 of the terminal plug 4. Therefore, when the third plug 4 is inserted into the base, the second annular enclosure 18 wraps around the third plug shell, so that alignment is facilitated when the plug is inserted, and a good shielding and shielding effect can be achieved.

As a further preferred embodiment, in order to prevent the meter plugs 2, 3 from being erroneously inserted into the terminal posts due to the proximity of the three plugs in shape and size, referring to fig. 2 and 3, an outer protrusion 171 is provided on each of both sides of the first annular fence 17 at positions corresponding to both ends of the plugs, and correspondingly, a protrusion 223 is provided on the plug housing of the meter plugs 2, 3 at a position and shape matching the outer protrusion 171. The second annular skirt 18 is not of similar design, so that if a

meter plug

2, 3 is erroneously inserted into a terminal plug post, it cannot be inserted due to the blocking of the projection 223. On the other hand, because the insulating partition plate 45 is arranged on the plug core of the terminal plug 4, and the connecting blocking pieces 112 are arranged between the adjacent plug posts in the two rows of meter plug posts 11 and 12, the terminal plug 4 cannot be mistakenly plugged into the two rows of meter plug posts, so that the risk of mistaken plugging is avoided to the maximum extent.

The following describes in detail the operation and working principle of the intelligent terminal access device of the present invention:

when the intelligent terminal access device is used, the base is fixedly arranged in the meter box or the electric appliance cabinet and is accessed into the secondary loop through the wiring part on the base. Specifically, taking a three-phase four-wire as an example, the wiring mode is that three groups of lines are respectively connected with a phase circuit, each group of lines comprises a path of voltage, a path of current inflow and a path of current outflow, three phases are shared, the three phases are respectively an A phase, a B phase and a C phase, and in addition, one path of N-phase voltage access is also included. Meanwhile, the meter plug is connected with the current meter and is plugged on the base. Specifically, the meter plug is connected with the meter through the wiring part, and the wiring sequence of the internal contact pins is consistent with the wiring sequence of each wiring head of the wiring part on the base. Thus, the current usage meter can be connected to the secondary circuit via a plug-base, achieving the normal metering function.

When the current and voltage parameters in the secondary circuit need to be measured by the intelligent terminal, the intelligent terminal is connected with the terminal plug of the intelligent terminal access device (the wiring sequence is consistent with the wiring sequence of each connector lug of the wiring part on the base), and then the terminal plug is inserted into the base. At the moment, the insulating partition plate on the terminal plug insert core is inserted between the two contact pins of the short-circuit elastic sheet and the insert sleeve contacted with the contact pins, so that the contact between the two contact pins is cut off, the current flowing out of the loop enters the intelligent terminal through the terminal plug, and the voltage is accessed through the voltage loop (at the moment, the current loop of the intelligent terminal and the current loop of the meter are in a series connection relation, and the voltage loop is in a parallel connection relation), so that the measurement of parameters such as current and voltage in the loop is realized. When the measurement is finished or the measurement is not needed, the terminal plug is pulled out, the short-circuit elastic sheet can automatically short-circuit the two plug bushes in the current flowing loop, and the whole current loop is kept not to be disconnected.

By adopting the scheme, the measurement of parameters such as current and voltage in the secondary circuit can be conveniently realized, additional wiring is not needed, the operation is convenient, and the open circuit of the secondary circuit caused by misoperation can be effectively avoided.

The intelligent terminal access device can also be used for lossless meter replacement.

When the meter is required to be replaced, a new meter (a replaced meter) is connected with another meter plug (the wiring sequence is consistent with that of each connector lug of the wiring part on the base), and then the meter plug is plugged on the base. At the moment, the plug bushes at the corresponding positions in the plug columns of the two rows of meters are connected with each other, so that the new meter and the old meter which are connected with the base through the plug are in parallel connection, at the moment, the new meter and the old meter simultaneously measure the secondary circuit, and the measurement results of the new meter and the old meter are added to obtain the measurement data of the whole secondary circuit.

After other procedures are finished, the meter plug connected with the currently used (to be replaced) meter is pulled out, and then the secondary loop can be independently and normally metered by the new meter (replacing meter), so that the meter replacing operation is finished.

The intelligent terminal access device can realize uninterrupted lossless metering, avoids the loss of a power supply enterprise caused by metering failure or inaccurate metering in the meter changing process, has simple, convenient and quick working procedures in the whole operation process, can greatly improve the meter changing efficiency, reduces the operation difficulty of workers, and avoids the accidental risk in the meter changing process.

As a further preferred embodiment, referring to fig. 1-3, the base 1 is further provided with a pair of communication plugs 15, the pair of communication plugs comprises two communication plugs 151, 152, and the communication plugs at corresponding positions in the two communication plugs 151, 152 are connected with each other.

When the base is installed, a communication line in the meter box or the electric appliance cabinet can be connected with one of the communication plug connectors, and when the communication line needs to be connected, the communication plug is directly connected with the other communication plug, so that the connection can be conveniently realized.

As a further preferred embodiment, referring to fig. 10, the non-destructive meter changing device in this embodiment further includes an outer casing 5 covering the entire base and covering the plug-in post on the base, the plug on the base and the communication connector. Further, the outer shell is fixedly connected with the base through screws at the connecting part 51, and a lead sealing anti-dismounting structure is arranged on the connecting part.

Adopt this kind of structure, at the beginning install the base and through table meter plug connection present use the table meter after, cover shell body 5 and set up lead sealing and prevent tearing open the structure, can prevent that irrelevant personnel from carrying out the dismouting operation. When parameter measurement or meter replacement are required, the lead seal anti-disassembly structure is removed, the outer shell is disassembled, and then meter replacement or related measurement operation can be performed. After the operation is completed, the outer shell 5 is covered again and a lead seal anti-dismounting structure is arranged.

As a further preferred embodiment, see fig. 1, the terminal plug 4 and the plug housing tops of the two gauge plugs 2, 3 are provided with a planar ridge extending across the entire housing, and the inside of the respective outer housing 5 is provided with a protruding beam corresponding to the planar ridge, so that the plugs can be pressed against loosening after the outer housing 5 is mounted on the base. Additionally, referring to fig. 8 and 9, a planar ridge on the plug housing extends to the plug tip and protrudes to form a catch 222 to facilitate plugging and unplugging of the plug.

The above description of the embodiments is only intended to facilitate the understanding of the method of the utility model and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. An intelligent terminal access device, comprising:

2. The intelligent terminal access device according to claim 1, wherein the meter jack posts are arranged in two rows, and jacks at corresponding positions in the two rows of meter jack posts are connected with each other.

3. The intelligent terminal access device according to claim 1, wherein the base comprises a base housing and a bottom cover plate, the rows of jack posts are arranged side by side on the front surface of the base housing, the back surface of the base housing is provided with an installation portion corresponding to the jack posts, and the plug bushes are installed in the jack posts and fixed at the installation portion by screws.

4. The intelligent terminal access device according to claim 1, wherein the wire connection portion includes a plurality of wire connection holes corresponding to the plug posts and disposed on a side surface of the base, the wire connection head is disposed in the wire connection holes, a plurality of grooves corresponding to the wire connection holes are disposed on the base, and screws for fixing the wire connection head are disposed in the grooves.

5. The intelligent terminal access device according to claim 3, wherein a wiring slot communicating the installation portion and the wiring portion is further provided on the back of the base housing, and the conductive connecting member is disposed in the wiring slot.

6. The intelligent terminal access device according to claim 5, wherein the wiring groove and the back of the whole base housing are filled with an insulating filler, and the bottom cover plate covers the insulating filler and is fixedly connected with the base housing through screws.

7. The intelligent terminal access device of claim 1, wherein the front face of the base housing is provided with a first annular enclosure surrounding the meter post and a second annular enclosure surrounding the terminal post, at least a portion of the first annular enclosure configured to fit the outer shape of the plug housing of the meter plug, and at least a portion of the second annular enclosure configured to fit the outer shape of the terminal plug.

8. The intelligent terminal access device of claim 7, wherein the first annular enclosure has at least one protrusion thereon, and wherein the plug housing of the meter plug has a protrusion thereon that matches the protrusion in position and shape.

9. The intelligent terminal access device according to any one of claims 1-8, wherein a pair of communication plugs are further provided on the base, and the communication plugs at corresponding positions in the pair of communication plugs are connected with each other.

10. The intelligent terminal access device according to any one of claims 1-8, further comprising an outer housing covering the base for covering the terminal plug and/or the meter plug.

11. The intelligent terminal access device according to claim 10, wherein the top of the plug housing of the terminal plug and the meter plug is provided with a planar ridge extending across the entire housing, and the inside of the outer housing is provided with a convex beam corresponding to the planar ridge.