Motor junction box structure with built-in current and voltage acquisition device
Technical Field
The utility model relates to the technical field of electric machines, concretely relates to built-in current and voltage acquisition device's motor terminal box structure.
Background
The motor is used as the most common electric driving equipment in the industrial field, unforeseen safety problems often occur in the using process, and along with the development of the internet of things technology, state monitoring becomes a better means for solving the real-time state of the equipment. In the condition monitoring of the motor, the current and the voltage are very intuitive and direct data, and the power consumption and the load condition of the motor can be known through data processing. At present, a commonly used method is to install a collection device (such as an ammeter) in an electric room, but because the distances between the electric room and a motor are different, including the difference of internal resistance values of different wires, the difference of current and voltage and the actual data of the motor exists, and the current and voltage collection device is arranged in a motor junction box, so that the situation can be well avoided.
SUMMERY OF THE UTILITY MODEL
The utility model provides a motor terminal box structure of built-in current-voltage acquisition device to reach and record the electric current that is closest to the motor reality and voltage data's purpose.
The utility model provides a basic scheme is: the motor junction box structure with the built-in current and voltage acquisition device comprises a junction box and a data acquisition unit arranged in the junction box; a power wire is connected in the junction box, and a current transformer and a voltage acquisition terminal which are respectively connected with a data acquisition unit are installed in the junction box; the current transformer is sleeved on the power wire; the voltage acquisition terminal is in contact with the power lead; the contact positions of the current transformer and the voltage acquisition terminal with the power wire are adjustable.
The utility model has the advantages that:
the utility model can directly contact with the power wire through the current transformer and the voltage acquisition terminal, and can directly obtain the current and voltage data closest to the actual motor; the utility model has the advantages of simple and reliable overall structure, through the data collection station who is connected with current transformer and voltage acquisition terminal, be favorable to implementing remote monitoring to the motor behavior.
In addition, the contact positions of the current transformer and the voltage acquisition terminal and the power wire are adjustable, so that the data accuracy acquired by the current transformer and the voltage acquisition terminal is also adjustable to a certain extent, and the data detection accuracy is improved.
Furthermore, an integrated data processing and storing module is arranged in the data acquisition unit.
The integrated data processing and storage module sold in the market is arranged in the data acquisition unit, and the data acquisition function is completed by utilizing the prior art.
Furthermore, the data acquisition unit is provided with a data output interface, and the data output interface is arranged at the side end of the data acquisition unit.
Through the data output interface, the collected current and voltage data are transmitted to a remote monitoring end through a data line or a wireless network, and the data output interface is arranged at the side end of the data collector, so that the data output interface is connected with other lines.
Furthermore, a lithium battery power supply is arranged in the data acquisition unit.
The data acquisition unit does not need to adopt an external power supply, directly uses a built-in lithium battery power supply, and is convenient to operate.
Furthermore, the data acquisition unit is connected with the junction box by adopting a sliding groove type structure.
The data acquisition unit is connected with the junction box through a sliding groove type structure.
Further, the sliding groove comprises a first sliding block and a second sliding block which form the sliding groove; the first sliding block is arranged on the inner side of the box top of the junction box; the second sliding block is arranged at the top end of the data acquisition unit.
A sliding groove is formed by the first sliding block and the second sliding block, so that the data acquisition unit can be disassembled and assembled from the junction box.
Further, the data collector is welded on the inner side of the junction box.
The data collector can also be welded directly on the inner side of the junction box.
Further, the voltage acquisition terminal comprises a swinging part hinged with the data acquisition unit and a contact part used for being in contact with the power wire.
The voltage acquisition terminal comprises a swinging part and a contact part.
Further, the swing portion swings within a range of 10 to 70 °.
The contact position of the contact part and the power wire is adjusted by adjusting the inclination angle of the swinging part.
Further, the contact part is "U" type, the contact part is connected with lock nut, and the contact part is pressed to the power wire by lock nut.
The U-shaped contact part facilitates the connection of the locking nut with the bottom end of the junction box through the gap of the contact part, and presses the contact part onto the power wire to be in contact with the power wire.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a motor junction box structure of the current and voltage collecting device of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: fixing bolt 1, terminal box 2, data output interface 3, voltage acquisition terminal 4, data collection station 5, spout 6, lock nut 7, current transformer 8, terminal box apron 9, power wire 10.
The embodiment is basically as shown in the attached figure 1: the motor junction box structure with the built-in current and voltage acquisition device comprises a junction box 2 and a data acquisition unit 5 installed in the junction box 2, wherein the top of the junction box 2 is a junction box cover plate 9 which is convex in the middle and concave at the periphery. The longitudinal section of the whole junction box 2 is in a convex structure. The junction box top cover is connected with the side wall of the junction box below the junction box top cover through the fixing bolt 1. The bottom surface welding of terminal box apron has the first slider that both ends outwards stretched out, and the welding has the second slider that inwards stretches out on data collection station 5's the top surface, and with the second slider take on first slider, form and let the gliding spout 6 of second slider along first slider. The data output interface 3 used for being connected with an output wire is installed on the circumferential position of the data collector 5, a voltage acquisition terminal 4 is connected with the bottom surface of the data collector 5 through screws, the voltage acquisition terminal 4 is L-shaped, and the voltage acquisition terminal 4 is of an easily conductive metal structure such as copper. A hole for the power wire 10 to pass through is formed on one side wall of the junction box 2.
The voltage acquisition terminal 4 comprises a contact part which is used for contacting with a locking nut and is pressed by the locking nut to contact with a power lead, and a swinging part which is integrally formed with the contact part, wherein the included angle between the swinging part and a horizontal line is adjustable, and the contact position between the contact part and the power lead is adjusted. Within the range of 10-70 degrees, the contact position between the voltage acquisition terminal 4 and the power lead 10 can be changed by adjusting the angle of the swinging part, and then the voltage acquisition terminal 4 occupies the most favorable contact position by adjustment, so that accurate voltage data can be acquired conveniently.
Similarly, the current transformer is hinged with the junction box 2 through a straight strip structure, the position of the current transformer is adjusted by adjusting the included angle between the straight strip structure and the horizontal line, and the current transformer is sleeved outside the power wire and used for detecting the current data of the power wire. In order to facilitate the current detection, the inclination angle of the power wire in contact with the current transformer and the horizontal line is 10-70 degrees. The current transformer and the voltage acquisition terminal are respectively arranged at the contact points of the power conducting wire, and the distance between the current transformer and the voltage acquisition terminal is 30-60 cm.
Data collection station 5 installs on terminal box apron 9 through spout 6, and spout 6 adopts welded mode fixed with terminal box apron 9. The voltage acquisition terminal 4 and the power wire 10 are fixed on the binding post through the lock nut 7 to obtain voltage data, and the current transformer 8 is clamped on the power wire 10 to obtain current data.
The data collector integrates the existing data processing and storage modules. The current transformer, the voltage acquisition terminal and the data acquisition unit are all arranged in the motor junction box. The data acquisition unit is provided with a data output interface, and the data output interface is connected with the storage module.
In this embodiment, the data collector uses a built-in lithium battery power supply. The data acquisition unit does not need to adopt an external power supply.
The embodiment provides a collection mode design of current and voltage data closest to the actual motor, has a simple and reliable structure, and is beneficial to remotely monitoring the running condition of the motor.
The above description is only for the embodiments of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine their own ability to perfect and implement the schemes, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.