CN211697955U - Separable and rotatable alternating current sensor - Google Patents

Abstract

The utility model relates to a separable and rotatable AC current sensor, which comprises a current loop device and a main module component connected with the current loop device; the current loop device comprises a lower shell and an upper shell which are mutually clamped, the lower shell is a hollow rectangular shell with an opening on one surface, a clamping groove is formed in the lower shell for placing a current loop, and an RJ45 interface is arranged on the side wall of the lower shell; the bottom surface of the lower shell is provided with a connecting snap ring; the main module assembly comprises a main body lower shell and a main body upper shell which are symmetrically clamped up and down, a core board is arranged between the main body lower shell and the main body upper shell, and the core board comprises a first external interface, a second RJ45 interface and a current loop interface; the main part is equipped with semicircular rotatory heavy groove down on the casing, and after casing and the casing block in the main part, a cylinder passageway is constituteed in two semicircular rotatory heavy grooves down. The utility model discloses can realize split type installation and integral type installation respectively, the electric current ring can be 0-90 orientation rotatory, and split type installation has improved the installation flexibility.

Description

Separable and rotatable alternating current sensor

Technical Field

The utility model relates to a low pressure distribution technical field especially relates to a rotatable alternating current sensor of components of a whole that can function independently, is applied to the current detection in low pressure return circuit and carries out data transmission.

Background

In the low-voltage power distribution industry, a plurality of current sensors are needed to collect the current of each branch, so that the current state of each branch can be acquired in time, and the normal work of the branch can be guaranteed. Due to the fact that field installation environments are diversified, a user can expect to obtain branch current data quickly and accurately, and meanwhile the current sensor can meet different installation environments of various fields when being installed.

The ac current sensors used in the prior art have the following drawbacks:

(1) the current loop direction of the existing current sensor cannot rotate, and the sensor must be installed according to the threading direction of a cable on site;

(2) the existing current sensors are all integrated, and if a cable needing to measure current on site is far away from a rear acquisition device, the current sensors cannot meet the requirement;

(3) many users need to display the cable current of each branch on site, and conventional current sensors do not have displays.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the aforesaid not enough, provide a but rotatable alternating current sensor of components of a whole that can function independently, be applied to complicated various low voltage distribution box that need measure primary current in, its simple structure is small and exquisite, the installation is nimble convenient.

The purpose of the utility model is realized like this:

a separable rotatable AC current sensor comprises a current loop device and a main module component connected with the current loop device; the current loop device comprises a lower shell and an upper shell which are mutually clamped, the lower shell is a hollow rectangular shell with an opening on one surface, a clamping groove is formed in the lower shell for placing a current loop, and an RJ45 interface is arranged on the side wall of the lower shell; the bottom surface of the lower shell is provided with a connecting snap ring;

the main module assembly comprises a main body lower shell and a main body upper shell which are symmetrically clamped up and down, a core board is arranged between the main body lower shell and the main body upper shell, and the core board comprises a first external interface, a second RJ45 interface and a current loop interface; the main part is equipped with semicircular rotatory heavy groove down on the casing, and after casing and the casing block in the main part, a cylinder passageway is constituteed in two semicircular rotatory heavy grooves down.

Further, the current loop device and the main module assembly are connected in a split mode through a network cable.

Furthermore, a connecting support is arranged in the cylindrical channel, the connecting support is a circular ring cylinder, the outer diameter of the connecting support is matched with the inner diameter of the cylindrical channel, and the inner diameter of the connecting support is matched with the outer diameter of the connecting clamping ring; the connecting clamp ring is inserted into the connecting bracket to realize the integrated connection of the current loop device and the main module component; the connecting snap ring, the connecting support and the cylindrical channel form a rotating mechanism to realize the rotation of the current loop device.

Furthermore, the upper part of the rotary sinking groove is provided with an arc-shaped groove, and the bottom of the rotary sinking groove is provided with a plurality of buckle sinking grooves.

Further, the connecting support outer wall is equipped with the round chimb, with the arc wall block on the rotatory heavy groove.

Further, the connection snap ring includes the cardboard of two symmetry settings, the outer wall bottom of cardboard is equipped with a buckle.

Further, the buckle on the cardboard can fix the current loop device with the heavy groove block of buckle.

Furthermore, during split type installation, the outside of the connection snap ring of the current ring device is provided with a protective cover.

Furthermore, the first external interface comprises an auxiliary power supply interface and an analog output interface, the second external interface is an RS485 output interface and is used for monitoring a host and networking communication of other detection units, the second RJ45 interface is connected with a current loop or a compatible external display module, and the current loop interface is used for connecting a current loop signal.

Furthermore, the main module component is connected with the display module through a network cable.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the current ring of the utility model can rotate in the direction of 0-90 degrees, can adapt to various current cable threading directions when being installed on site by users, is flexible and convenient to install, and greatly reduces the installation difficulty;

(2) the utility model can realize split type installation, and the main body and the current ring can be installed at different positions in the distribution box with narrow space, thereby greatly improving the installation flexibility;

(3) the utility model discloses can expand the display module outward, provide very big facility to the user that needs local demonstration;

(4) the output of the sensor of the utility model adopts two types of RJ45 interface and analog output interface, and the wiring is simple, convenient and reliable; and a Modbus-RTU protocol is adopted, and a standard communication protocol is convenient for data analysis of the monitoring host.

Drawings

Fig. 1 is a schematic view of the split installation of the present invention.

Fig. 2 is an integrated rotation diagram of the present invention.

Fig. 3 is a schematic structural diagram of the externally-extended display module of the present invention.

Fig. 4 is an exploded view of the present invention.

Fig. 5 is an exploded view of the rotary device according to the present invention.

Fig. 6 is a schematic structural diagram of the core board of the present invention.

Fig. 7 is a functional principle schematic diagram of the present invention.

Wherein:

current ring device 1, lower casing 11, connection snap ring 111, cardboard 112, buckle 113, go up casing 12, current ring 13, RJ45 interface 14, main module subassembly 2, main part lower casing 21, rotatory heavy groove 211, arc groove 212, buckle heavy groove 213, main part upper casing 22, nuclear core plate 23, first outside interface 231, second outside interface 232, second RJ45 interface 233, current ring interface 234, linking bridge 24, chimb 241, light guide pillar 25, guide rail retaining member 26, net twine 3, display module 4, protection casing 5.

Detailed Description

For better understanding of the technical solution of the present invention, the following detailed description will be made with reference to the accompanying drawings. It should be understood that the following embodiments are not intended to limit the embodiments of the present invention, but only the embodiments of the present invention. It should be noted that the description of the positional relationship of the components, such as the component a is located above the component B, is based on the description of the relative positions of the components in the drawings, and is not intended to limit the actual positional relationship of the components.

Example 1:

referring to fig. 2 and 4-6, fig. 2 depicts an integrated installation schematic of the present invention. As shown in the drawings, the utility model relates to a separable and rotatable alternating current sensor, which comprises a current loop device 1 and a main module component 2;

the current loop device 1 comprises a lower shell 11 and an upper shell 12 which are clamped with each other, wherein the lower shell 11 is a hollow rectangular shell with an opening on one surface, a clamping groove for placing a current loop 13 is arranged in the lower shell 11, and the side wall of the lower shell 11 is provided with an RJ45 interface 14; the bottom surface of lower casing 11 is equipped with connection snap ring 111, connection snap ring 111 is the circular ring column type, connection snap ring 111 includes the cardboard 112 of two symmetry settings, the outer wall bottom of cardboard 112 is equipped with a buckle 113.

Main module subassembly 2 includes casing 21 and main part upper housing 22 under the main part of longitudinal symmetry block, set up nuclear core plate 23 under the main part between casing 21 and the main part upper housing 22, be equipped with leaded light post 25 under the main part on the casing 21, the bottom of casing 22 is equipped with guide rail retaining member 26 under the main part in casing 21 and the main part.

A semicircular rotary sinking groove 211 is formed in the lower main body shell 21, an arc-shaped groove 212 is formed in the upper portion of the rotary sinking groove 211, a plurality of buckle sinking grooves 213 are formed in the bottom of the rotary sinking groove 211, and a plurality of grooves are formed in the buckle sinking grooves 213; after casing 21 and the main part upper housing 22 block, a cylinder passageway is constituteed to two semicircle rotation heavy grooves 211, establishes linking bridge 24 in, linking bridge 24 is the ring post, and its external diameter and cylinder passageway's internal diameter phase-match, its internal diameter and the external diameter phase-match of connecting snap ring 111, linking bridge 24 outer wall is equipped with round chimb 241, with the arc wall 212 block on the rotation heavy groove 211.

The connection snap ring 111 is inserted into the connection bracket 24 and rotates, and the buckle 113 on the snap plate 112 is engaged with the buckle sinking groove 213 to fix.

The core board 23 includes a first external interface 231, a second external interface 232, a second RJ45 interface 233, and a current loop interface 234, the first external interface 231 includes an auxiliary power supply interface, an analog output interface, the second external interface 232 is an RS485 output interface, and is used for monitoring a host and networking communication of other detecting units, the second RJ45 interface 233 is connected with a current loop or is connected with a compatible external display module, and the current loop interface 234 is used for connecting a current loop signal.

Example 2:

referring to fig. 1, fig. 1 is a schematic diagram of a split installation according to the present invention. Different from the integrated installation of the embodiment 1, the current loop device 1 and the main module component 2 are connected through the network cable 3 to realize split installation; the outside of the connection clamping ring 111 of the current ring device 1 is provided with the protective cover 5 to protect the connection clamping ring 111 from being damaged.

Example 3:

referring to fig. 3, fig. 3 is a schematic structural diagram of the externally-extended display module according to the present invention. On the basis of embodiment 1 or embodiment 2, the main module component 2 is connected to the display module 4 through a network cable, so as to realize a local display function.

The working principle is as follows:

the utility model discloses a but split body rotary AC current sensor, split type installation, but also integral type installation. The current loop shell is connected and fixed through a connecting clamp ring, so that the current loop shell can rotate; the buckle sinking groove at the lower part of the rotary sinking groove is used for matching with a buckle at the lower half part of the current loop shell to realize the control of the rotation angle; can install in a flexible way during split type installation, the main part module passes through the net twine with the electric current loop module and is connected, realizes split type installation, can install main part and electric current loop in the position of difference in the block terminal that the space is narrow and small.

Referring to fig. 7, the external current signal is collected by the current loop and transmitted to the main circuit board, and the main circuit board comprises an auxiliary power supply, an analog output, an RS485 communication output, a status indicator lamp and a display module interface.

The auxiliary power supply converts DC24V into weak current to supply power to the main body, and the MCU of the main body module converts the current signal into an analog signal through a special algorithm or outputs the signal to an external acquisition device through an RS485 interface. When the temperature of the circuit board is overhigh or the current data is abnormal, the indicator lamp gives an alarm.

The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims (10)

1. An alternating current sensor capable of being rotated in a split manner, which is characterized in that: the device comprises a current loop device (1) and a main module component (2) connected with the current loop device; the current loop device (1) comprises a lower shell (11) and an upper shell (12) which are mutually clamped, a clamping groove for placing a current loop (13) is arranged in the lower shell (11), and an RJ45 interface (14) is arranged on the side wall of the lower shell (11); the bottom surface of the lower shell (11) is provided with a connecting snap ring (111);

the main module assembly (2) comprises a lower main body shell (21) and an upper main body shell (22) which are symmetrically clamped up and down, a core board (23) is arranged between the lower main body shell (21) and the upper main body shell (22), and the core board (23) comprises a first external interface (231), a second external interface (232), a second RJ45 interface (233) and a current loop interface (234); be equipped with semicircular rotatory heavy groove (211) on casing (21) under the main part, casing (21) and main part go up casing (22) block back under the main part, a cylinder passageway is constituteed in two semicircle rotation heavy grooves (211).

2. The ac current sensor as claimed in claim 1, wherein: the current loop device (1) is connected with the main module component (2) in a split mode through a network cable (3).

3. The ac current sensor as claimed in claim 1, wherein: a connecting support (24) is arranged in the cylindrical channel, the connecting support (24) is a circular ring cylinder, the outer diameter of the connecting support is matched with the inner diameter of the cylindrical channel, and the inner diameter of the connecting support is matched with the outer diameter of the connecting clamping ring (111); the connecting clamping ring (111) is inserted into the connecting support (24) to realize the integrated connection of the current ring device (1) and the main module assembly (2); the connecting clamping ring (111), the connecting support (24) and the cylindrical channel form a rotating mechanism to realize the rotation of the current loop device (1).

4. An alternating current sensor as claimed in claim 3, wherein: the upper part of the rotary sinking groove (211) is provided with an arc-shaped groove (212), and the bottom part of the rotary sinking groove is provided with a plurality of buckle sinking grooves (213).

5. The ac current sensor as claimed in claim 4, wherein: the outer wall of the connecting support (24) is provided with a circle of convex edges (241) which are clamped with the arc-shaped grooves (212) on the rotary sinking grooves (211).

6. The ac current sensor as claimed in claim 4, wherein: the connecting clamping ring (111) comprises two clamping plates (112) which are symmetrically arranged, and a buckle (113) is arranged at the bottom end of the outer wall of each clamping plate (112).

7. The ac current sensor as claimed in claim 6, wherein: the current loop device (1) can be fixed by clamping the buckle (113) on the clamping plate (112) with the buckle sinking groove (213).

8. An alternating current sensor as claimed in claim 2, wherein: when the split type installation is carried out, a protective cover (5) is arranged outside the connecting clamping ring (111) of the current ring device (1).

9. The ac current sensor as claimed in claim 1, wherein: the first external interface (231) comprises an auxiliary power supply interface and an analog output interface, the second external interface (232) is an RS485 output interface and is used for monitoring a host and networking communication of other detection units, the second RJ45 interface (233) is connected with a current loop or is compatible with an external display module, and the current loop interface (234) is used for connecting current loop signals.

10. The ac current sensor as claimed in claim 1, wherein: the main module component (2) is connected with the display module (4) through a network cable.

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