CN214539957U - Join in marriage and become platform district low pressure overhead line electric leakage investigation device - Google Patents

Abstract

The utility model relates to a join in marriage transformer station district low pressure overhead line electric leakage investigation device, measuring head, telescopic link and leakage current measuring apparatu including the rectangle frame form, the measuring head is vertical to be installed at the telescopic link top, and a side of measuring head is equipped with the opening and shutting mouth in order to do benefit to the circuit and pass, and the measuring head is connected to leakage current measuring apparatu through the wire. During the use, the telescopic link is handed to the staff and through the telescopic link removal measuring head, joins in marriage and becomes transformer area low pressure overhead line and get into inside the measuring head through the opening and shutting mouth of measuring head lateral part, and the measuring head carries the data that record to the leakage current measuring apparatu through the wire, shows through the leakage current measuring apparatu, makes things convenient for the staff to read, and the quick location electric leakage position of help staff. The utility model relates to a rationally, the measurement of leakage current is carried out to low pressure overhead line to the convenience, not only improves staff's safety, guarantees measurement accuracy moreover.

Description

Join in marriage and become platform district low pressure overhead line electric leakage investigation device

The technical field is as follows:

the utility model relates to a join in marriage transformer district low pressure overhead line electric leakage investigation device.

Background art:

the rural distribution transformer station area has dispersed users and long power supply radius, adopts a three-phase four-wire system low-voltage overhead line for power supply, and can cause electric energy loss, even personal electric shock and electric fire when encountering the electric leakage condition of the users or the station area line. Meanwhile, the intermediate line is not provided with a branch leakage current device, so that rush repair personnel are very difficult and low in efficiency when searching a leakage current grounding point.

The conventional leakage current measuring device mainly has two forms:

one is an integral clamp-on ammeter, the testing mode adopts a flexible coil with the length of about 628mm, the output signal is the differential of current to time, the input current can be really restored by integrating the output voltage signal, the precision of +/-2% can be achieved, meanwhile, the measured current is displayed by an LCD screen, and the resolution ratio is about 10 mA. The integrated clamp-on ammeter has the problems that the length of a flexible coil is only 628mm, and the width measurement requirement of a low-voltage four-wire overhead conductor 1.5m cannot be met; the flexible coil is flexible, needs to be operated in a short distance, is not suitable for workers to operate the low-voltage overhead conductor with the height of 10m on the ground, and cannot achieve the desired function;

the other type is a split type overhead conductor leakage current measuring tool which mainly comprises four parts, namely an operating rod, an insulating rod, a pincer-shaped current transformer and a leakage current measuring instrument. The tool mainly can realize that personnel install four pincerlike current transformers on the wire through an order gram rod and an operating rod on the ground, and three-phase four-wire secondary current wires of the tool extend to the ground to be connected and gathered with the leakage current measuring instrument and are measured through the leakage current measuring instrument. Although the split type overhead conductor leakage current measuring tool can realize the operation of personnel on the ground and reduce the safety risk in the ascending inspection process of the personnel, four pincerlike current transformers need to be installed, so that the operation difficulty is high and the time is long; the opening of the pincerlike current transformer is close to the wire, the measurement precision is poor, and the operation efficiency cannot be improved.

The utility model has the following contents:

the utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model aims to solve the technical problem that a join in marriage transformer station district low pressure overhead line electric leakage investigation device is provided, reasonable in design not only conveniently measures fast, guarantees measurement accuracy moreover.

In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a join in marriage transformer district low pressure overhead line electric leakage investigation device, includes measuring head, telescopic link and the leakage current measuring apparatu of rectangle frame form, the vertical installation at the telescopic link top of measuring head, a side of measuring head is equipped with the opening and shutting mouth in order to do benefit to the circuit and pass, and the measuring head is connected to the leakage current measuring apparatu through the wire.

Further, the measuring head includes the rectangle support and twines the measuring element on the rectangle support, measuring element's secondary part is led down through the wire and is connected to the electric leakage measuring apparatu, a breach in order to do benefit to the circuit to pass is seted up at a side middle part of rectangle support, be provided with the flexible piece of opening and shutting that is used for closed breach in the breach.

Further, flexible piece of opening and shutting includes the last insulating nylon rope and the lower insulating nylon rope of equal vertical setting, go up insulating nylon rope and insulating nylon rope along horizontal dislocation distribution down, go up the upper end of insulating nylon rope and fix in the upper end of breach, go up the lower extreme of insulating nylon rope and be located the upper end upside of insulating nylon rope down, the lower extreme of insulating nylon rope is fixed in the lower extreme of breach down.

Further, the measuring element adopts a flexible Rogowski coil.

Furthermore, the bottom of the rectangular support is fixedly connected with a connecting pipe which is used for being sleeved with the upper end of the telescopic rod at one end far away from the notch, a clamping groove is formed in the inner wall of the connecting pipe, and a clamping convex part which is used for being clamped with the clamping groove in a matched mode is arranged on the outer wall of the upper end of the telescopic rod.

Furthermore, first reinforcing rods are obliquely arranged between the left end and the right end of the lower portion of the connecting pipe and the bottom of the rectangular support respectively.

Furthermore, the other side edge corresponding to the notch and the lower end of the rectangular support are respectively connected with a second reinforcing rod which is obliquely arranged.

Furthermore, the lower end of the telescopic rod is connected with a rubber handle.

Furthermore, the telescopic rod is made of carbon fiber.

Compared with the prior art, the utility model discloses following effect has: the utility model relates to a rationally, the measurement of leakage current is carried out to low pressure overhead line to the convenience, not only improves staff's safety, guarantees measurement accuracy moreover.

Description of the drawings:

fig. 1 is a schematic front view of the embodiment of the present invention.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1, the utility model relates to a join in marriage transformer area low pressure overhead line electric leakage investigation device relates to the leakage current measurement of joining in marriage transformer area low pressure overhead line, measuring head 1, telescopic link 2 and leakage current measuring apparatu 3 including the rectangle frame form, 1 vertical the installing at telescopic link 2 tops of measuring head, one side of measuring head 1 is equipped with the opening and shutting mouth 4 that passes in order to do benefit to the circuit, and measuring head 1 is connected to leakage current measuring apparatu 3 through wire 5. During the use, the staff holds telescopic link 2 and removes measuring head 1 through telescopic link 2, joins in marriage transformer station district low pressure overhead line 6 and gets into inside measuring head 1 through the opening and shutting mouth 4 of 1 lateral part of measuring head, and measuring head 1 carries the data that record to leakage current measuring apparatu 3 through wire 5, shows through leakage current measuring apparatu, makes things convenient for the staff to read, and the quick electric leakage position of fixing a position of help staff.

In this embodiment, the measuring head 1 includes a rectangular support 7 and a measuring element 8 wound on the rectangular support 7, the secondary part of the measuring element 8 is connected to the electric leakage measuring instrument 3 through the lead 5, a notch 9 for facilitating the line to pass is provided in the middle of one side edge of the rectangular support 7, a flexible opening and closing member for closing the notch is provided in the notch 9, and the flexible opening and closing member and the notch are combined to form an opening and closing opening.

In this embodiment, the length of the rectangular bracket 7 is about 1.5m, and the rectangular bracket can accommodate a horizontally arranged three-phase four-wire low-voltage overhead conductor at the same time.

In this embodiment, flexible opening and shutting piece is including the last insulating nylon rope 10 and the lower insulating nylon rope 11 of equal vertical setting, go up insulating nylon rope 10 and 11 along horizontal dislocation distribution of insulating nylon rope down, the upper end of going up insulating nylon rope 10 is fixed in the upper end of breach 9, and the lower extreme of going up insulating nylon rope 10 is located the upper end upside of insulating nylon rope 11 down, and the lower extreme of insulating nylon rope 11 is fixed at the lower extreme of breach 9 down. The insulating nylon ropes are flexible, so that when the insulating nylon ropes are not used, the gaps can be closed due to the fact that the upper insulating nylon ropes and the lower insulating nylon ropes are distributed in a staggered mode in the transverse direction; when the measuring head needs to be used, the circuit can enter the measuring head after the upper and lower insulating nylon ropes are opened, and is located in the middle position, so that the use is convenient.

In this embodiment, the measuring element 8 is a flexible rogowski coil, which is wound around a rectangular support.

In this embodiment, the bottom of rectangular support 7 is connected firmly in the one end of keeping away from the breach has the connecting pipe 12 that is used for cup jointing mutually with the upper end of telescopic link 2, the inner wall of connecting pipe 12 is equipped with the joint recess, the upper end outer wall of telescopic link 2 is equipped with and is used for the joint convex part with joint recess joint complex. The connecting pipe passes through the joint cooperation with the telescopic link, makes things convenient for the dismouting of telescopic link and measuring head, improves the operating efficiency.

In this embodiment, in order to improve the structural strength of the connection pipe, first reinforcing rods 13 are respectively obliquely arranged between the left and right ends of the lower portion of the connection pipe 12 and the bottom of the rectangular bracket 7.

In this embodiment, in order to improve the structural strength of the entire measuring head, the rectangular bracket 7 is connected to second reinforcing rods 14, which are obliquely arranged, at the upper and lower ends of the other side corresponding to the notch 9.

In this embodiment, the lower extreme of telescopic link 2 is connected with rubber handle 15, accomplishes sweat-absorbing antiskid, is difficult for causing the staff to take off the hand.

In this embodiment, the telescopic rod 2 is made of carbon fiber, and has good structural strength.

In this embodiment, the telescopic link is current ripe product, and it comprises the body of rod that the multisection cup jointed each other, mainly realizes the extension of telescopic link and shortens the regulation through the push type hasp, and here no longer does too much repetition to its extending structure and gives unnecessary details. The telescopic link can withstand voltage 1000V, can realize that the multisection is flexible reaches the height of distribution transformer platform district low pressure overhead line 12m, guarantees staff's safety.

In this embodiment, the leakage current measuring instrument is an existing mature product, and includes a differential circuit, an integral circuit, an LCD display screen, a battery, a data storage module, an interface button, and the like, wherein a secondary down lead of the flexible rogowski coil is connected to the leakage current measuring instrument, and a result is obtained by calculating a differential current value and an integral circuit of the secondary current value and is displayed on the LCD screen; the data storage module can store the measured data to realize the review of the measured data; the interface buttons include switches, measurements, backlighting, data retention, data storage, etc. Finally, functions of peak value holding, leakage current measurement, overflow display, backlight display, data holding, data storage and the like can be realized.

In this embodiment, during the use, the measuring head can once only measure the leakage current of three-phase four-wire system or three-phase five-wire system low pressure air wire simultaneously, the telescopic link is connected with the measuring head and can risees the measuring head to low pressure air wire's height, the leakage current measuring apparatu can show the secondary current that obtains through differential, integrating circuit with measuring through the display screen, conveniently reads, and help the staff fixes a position the electric leakage position fast.

The utility model has the advantages that: (1) the leakage current of the low-voltage overhead line (including a three-phase four-wire system, a three-phase five-wire system and the like) can be measured, and the 2-level measurement precision is achieved; (2) the insulating telescopic rod can assist in measuring a low-voltage overhead line reaching 10 meters under the condition of greatly improving the safety of operators; (3) the measuring head is convenient to operate, can simultaneously surround a plurality of conducting wires at one time, and improves the operation efficiency; (4) the problem that the flexible coil of the integrated clamp-on ammeter cannot measure leakage current of a low-voltage overhead line on the ground can be solved, and safety of workers is guaranteed; and the installation time of the pincerlike current transformer can be reduced, and the operation efficiency is improved.

The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.

The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims (9)

1. The utility model provides a join in marriage and become transformer area low pressure overhead line electric leakage investigation device which characterized in that: measuring head, telescopic link and the leakage current measuring apparatu that includes the rectangle frame form, the measuring head is vertical to be installed at the telescopic link top, and a side of measuring head is equipped with the opening and shutting mouth in order to do benefit to the circuit to pass, and the measuring head is connected to the leakage current measuring apparatu through the wire.

2. The distribution transformer area low-voltage overhead line electric leakage checking device as claimed in claim 1, wherein: the measuring head comprises a rectangular support and a measuring element wound on the rectangular support, the secondary part of the measuring element is connected to the electric leakage measuring instrument through a lead, a notch beneficial to the circuit to pass is formed in the middle of one side edge of the rectangular support, and a flexible opening and closing piece used for closing the notch is arranged in the notch.

3. The distribution transformer area low-voltage overhead line electric leakage checking device as claimed in claim 2, wherein: the flexible opening and closing piece comprises an upper insulating nylon rope and a lower insulating nylon rope which are vertically arranged, the upper insulating nylon rope and the lower insulating nylon rope are distributed along the transverse dislocation, the upper end of the upper insulating nylon rope is fixed at the upper end of the notch, the lower end of the upper insulating nylon rope is located at the upper end upper side of the lower insulating nylon rope, and the lower end of the lower insulating nylon rope is fixed at the lower end of the notch.

4. The distribution transformer area low-voltage overhead line electric leakage checking device as claimed in claim 2, wherein: the measuring element adopts a flexible Rogowski coil.

5. The distribution transformer area low-voltage overhead line electric leakage checking device as claimed in claim 2, wherein: the bottom of the rectangular support is fixedly connected with a connecting pipe which is used for being sleeved with the upper end of the telescopic rod at one end far away from the notch, a clamping groove is formed in the inner wall of the connecting pipe, and a clamping convex part used for being clamped and matched with the clamping groove is arranged on the outer wall of the upper end of the telescopic rod.

6. The distribution transformer area low-voltage overhead line electric leakage checking device as claimed in claim 5, wherein: first reinforcing rods are obliquely arranged between the left end and the right end of the lower portion of the connecting pipe and the bottom of the rectangular support respectively.

7. The distribution transformer area low-voltage overhead line electric leakage checking device as claimed in claim 2, wherein: and the other side edge and the lower end of the rectangular support corresponding to the notch are respectively connected with a second reinforcing rod which is obliquely arranged.

8. The distribution transformer area low-voltage overhead line electric leakage checking device as claimed in claim 1, wherein: the lower end of the telescopic rod is connected with a rubber handle.

9. The distribution transformer area low-voltage overhead line electric leakage checking device as claimed in claim 1, wherein: the telescopic link is carbon fiber material.

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