CN103267934B - A kind of Portable direct current test discharging rod - Google Patents

Abstract

The invention discloses a portable DC test discharge rod, which comprises: a resistance element, which includes: a resistance shell, a water resistance located in the resistance shell, and pipe plugs respectively arranged at two ends of the resistance shell; A conductive pin on one end; a discharge grounding device fixedly connected to the second end of the resistance element; an insulating expansion tube fixedly connected to the resistance element; an insulating tube fixedly connected to the insulating expansion tube; and, fixedly connected to the insulating tube The insulating handle; the discharge grounding device includes: a discharge insulating wire socket embedded in the resistance shell, and a discharge insulating wire fixed on the insulating telescopic tube, the first end of the discharge insulating wire is provided with a discharge insulating wire plug, The second end of the discharge insulated wire is provided with a discharge ground clip. The discharge rod provided by the invention has large capacity, long measurable distance, safety, long service life, low cost, and is convenient to carry, thus having great application prospect.

Description

A portable DC test discharge rod

technical field

The invention relates to a discharge device, in particular, the invention relates to a portable DC test discharge rod.

Background technique

With the rapid development of China's economy and the continuous advancement of urbanization, various types of electrical equipment have increased significantly, especially the application of cables and their electrical equipment is more common. In order to ensure the safe operation of electrical equipment, it is necessary to carry out the DC voltage withstand test of cables. The power cable DC voltage withstand test is the most important item in the power cable electrical test project. After the cable withstand voltage test is completed, the residual charge in the cable core must be discharged through a nominal 0.1-0.2 megohm resistance. If the discharge is not carried out or the discharge is not complete, the safety of personnel and equipment will be endangered. It can be seen that the cable test discharge rod is an indispensable tool for the withstand voltage test.

In the cable DC withstand voltage test, the discharge rods provided by various manufacturers are unsafe and easy to damage due to their small capacity and small distance (especially during the 35KV cable test), which affects the safety of personnel and equipment.

Contents of the invention

The purpose of the present invention is to provide a DC test discharge rod, which has a large capacity and a long measuring distance, which can ensure the safety of people and equipment; moreover, the discharge rod is not easily damaged, has a long service life, is low in cost, and is easy to carry.

In order to achieve the above object, the present invention provides a portable DC test discharge rod, which includes:

A resistance element, the resistance element comprising: a resistance housing, a water resistance located in the resistance housing, and pipe plugs respectively arranged at both ends of the resistance housing;

a conductive pin fixedly connected to the first end of the resistance element;

a discharge grounding device fixedly connected to the second end of the resistance element;

An insulating telescopic tube fixedly connected to the resistance element;

an insulating tube fixedly connected to the insulating telescoping tube; and

An insulating handle fixedly connected to the insulating tube;

Wherein, the discharge grounding device includes: a discharge insulated wire socket embedded in the resistance shell, and a discharge insulated wire fixed on the insulating telescopic tube, the first end of the discharge insulated wire is provided with a discharge insulated wire plug, The discharge insulated wire plug is correspondingly matched with the discharge insulated wire socket, and the second end of the discharge insulated wire is provided with a discharge ground clip for ground discharge.

In the above-mentioned portable DC test discharge rod, the resistance casing is an insulated and extended telescopic tube, which can be adjusted in length according to resistance requirements, thereby meeting the requirements of different environments.

In the aforementioned portable DC test discharge rod, the water resistance is distilled water, which is low in cost and easy to add or replace.

The above-mentioned portable DC test discharge rod, wherein, the pipe plug and the resistance casing are sealed by epoxy resin.

The above-mentioned portable DC test discharge rod, wherein, the discharge insulated wire plug and the discharge grounding clip are all fixed on the insulating telescopic tube through the power cord fixing buckle. The discharge insulated wire is detachable, so different lengths of insulated wire can be selected according to the experimental needs to meet the requirements of safety and cost saving.

During the test, if you encounter a long-distance, large-section cable, after the DC withstand voltage, there will be a large amount of charge in the cable, and its energy is quite large. The invention uses a new type of medium (distilled water) to make a resistor, which ensures that the discharge capacity of the discharge rod is sufficient, the resistance value is within the range required by the test regulations, and there is a reliable safe distance between the operator and the device under test when working. The effect is very good; moreover, the service life of the discharge rod is significantly improved compared with the discharge rod of the prior art.

Description of drawings

Fig. 1 is a structural schematic diagram of a portable DC test discharge rod of the present invention.

detailed description

The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, a kind of portable DC test discharge stick provided by the present invention, this discharge stick comprises:

A resistance element, the resistance element comprising: a resistance housing 11, a water resistance 12 located in the resistance housing and pipe plugs 13 respectively arranged at both ends of the resistance housing; preferably, the water resistance 12 is distilled water;

a conductive pin 20 fixedly connected to the first end of the resistance element;

a discharge grounding device fixedly connected to the second end of the resistance element;

An insulating telescopic tube 40 fixedly connected to the resistance element;

an insulating tube 50 fixedly connected to the insulating telescopic tube; and

An insulating handle 60 fixedly connected to the insulating tube;

Wherein, the discharge grounding device includes: a discharge insulated wire socket 31 embedded in the resistance shell 11, and a discharge insulated wire 32 fixedly arranged on the insulating telescopic tube, the first end of the discharge insulated wire is provided with a discharge insulation A wire plug 33, the discharge insulated wire plug 33 is matched with the discharge insulated wire socket 31, and the second end of the discharge insulated wire is provided with a discharge ground clip 34 for ground discharge.

In some more preferred embodiments, the resistance casing 11 is an insulated and extended telescopic tube, which can be adjusted in length according to resistance requirements.

In some more preferred embodiments, the pipe plug 13 and the resistor casing 11 are sealed by epoxy resin.

In some more preferable embodiments, the non-end of the discharge insulated wire is fixed on the insulating telescopic tube 40 through the power cord fixing buckle 35, and the discharge insulated wire plug 33 and the discharge grounding clip 34 are led out respectively. More preferably, the fixing position of the discharge insulated wire 32 should at least meet the requirement that the discharge insulated wire plug 33 can be plugged into the discharge insulated wire socket 31 . The discharge insulated wire of the present invention is detachable, so insulated wires of different lengths can be selected according to experimental needs to meet the requirements of safety and cost saving.

The preparation method of the discharge rod of the present invention is as follows: according to the test procedures and equipment requirements, after calculating (resistance, capacity, temperature rise, volume; length) and other parameters, use discarded 10KV and 35KV electroscope pens for transformation, and use its 10KV 1. The insulating part of the first section of the 35KV electroscope pen (that is, the insulating tube part). The middle of the insulating tube is filled with distilled water, and the two ends are sealed with epoxy resin. The two ends are respectively introduced into metal wires, and the top is a 5mm The copper rod is made into a tip (that is, a conductive needle), and the tail is made into a plug-in (that is, embedded to set a discharge insulated wire socket), adjust the distance of the insulating telescopic tube, measure the resistance value to meet the requirements, and the lead-out wire of the tail plug-in can be connected to the ground , The resistance made in this way is put on the back insulating part of the original electroscope pen, so that it becomes a portable discharge rod, and the effect is very good after use.

In a word, the discharge rod of the present invention is developed by using high-power materials, and it is a device that can safely and reliably discharge the device after the DC test.

Although the content of the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. Various modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the above disclosure. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims (1)

1. a Portable direct current test discharging rod, it is characterised in that this discharging rod comprises:

Resistive element, this resistive element comprises: resistance shell (11), is positioned at the water resistance (12) of this resistance shell and is separately positioned on the pipe plug (13) at resistance shell two ends；

It is fixedly connected on the conductive pin (20) on this resistive element first end；

It is fixedly connected on the discharging grounding device on this resistive element second end；

The insulating telescopic pipe (40) being connected is fixed with resistive element；

The insulation tube (50) being connected is fixed with this insulating telescopic pipe；And

The insulated handle (60) being connected is fixed with insulation tube；

Wherein, described discharging grounding device comprises: embed electric discharge covered wire socket (31) being arranged on resistance shell (11), and, the electric discharge covered wire (32) being fixedly installed on insulating telescopic pipe, first end of this electric discharge covered wire is provided with electric discharge covered wire plug (33), this electric discharge covered wire plug (33) is provided with electric discharge earth clip (34) with electric discharge covered wire socket (31) Corresponding matching, the second end of this electric discharge covered wire, discharges for ground connection；Described water resistance (12) is distilled water；Described resistance shell (11) is insulated lengthened telescoping tube, can regulate length according to resistance requirement；The described non-end of electric discharge covered wire is fixed on described insulating telescopic pipe (40) by fixing buckle for power lines (35), draws electric discharge covered wire plug and electric discharge earth clip respectively.