A kind of hv cable termination head test bracket
Technical field
The utility model relates to electrical equipment technical field, especially relates to a kind of hv cable termination head test bracket.
Background technology
The major function of high-tension cable in operation of power networks is electric energy transmitting.Hv cable termination head is a kind of web member be connected with electrical equipment by high-tension cable of special processing and fabricating.In order to ensure the safe and stable operation of high-tension cable, according to working specification, need to carry out its property indices of test determination according to the test period specified to hv cable termination head and whether meet standard-required before putting into operation with operation.
At present, in hv cable termination head process of the test, because there is no special test bracket, some objects of many Interim uses testing ground support fixing hv cable termination head, such as: instrument cases, carton, insulating barrier etc., do not meet test operation procedure, cause test findings unstable, easily make mistakes; Do not meet safety regulation for operations, bring potential safety hazard to personnel and testing equipment yet.
Therefore, how providing a kind of and test special support, is the technical matters that those skilled in the art need solution badly to make hv cable termination head agreement with experimental test operation procedure and safety regulation for operations.
Utility model content
The purpose of this utility model is to provide a kind of hv cable termination head test bracket, and this support is carrying out carrying out supporting to high-voltgae pothead and fixing in hv cable termination head process of the test, can Pass Test working specification and safety regulation for operations.
For solving above-mentioned technical matters, the technical scheme that the utility model provides is:
A kind of hv cable termination head test bracket, comprise the upper bracket and lower carriage be made up of the insulating material meeting trial voltage requirement, pillar and base, described upper bracket comprises boss, on described boss along the Width of described boss be provided with three lateral cross section be circular arc and opening towards the groove of described base, air line distance between the center of circle of adjacent two described grooves is not less than 300mm, the radius of described groove is not less than 16mm, described lower carriage comprises the cavity coordinating described boss to insert, described lower carriage being provided with three groove fit on described boss for three lateral cross section of fixing hv cable termination head is circular through hole, on described lower carriage, the radius of through hole is not less than 16mm, the two ends of described upper bracket are connected by bolts and nuts to corresponding one end of described lower carriage respectively, described pillar comprises interior pillar and outer pillar, one end of described interior pillar is fixedly connected on the bottom of affiliated lower carriage, one end of described outer pillar is fixedly connected on the top of described base, described interior pillar and affiliated outer pillar are provided with several through holes vertically, when described interior pillar is connected to make test by the pin inserting through hole on it with described outer pillar, on described lower carriage, the distance of center circle of any one through hole is overhead not less than 300mm.
Preferably, the center of circle of three grooves on described upper bracket is parallel on the same straight line of surface level on edge.
Preferably, the center of circle of three grooves on described upper bracket lays respectively on three summits of an equilateral triangle, and wherein the center of circle of two described grooves is parallel on the same straight line of surface level on edge.
Preferably, described groove and described lower carriage are provided with soft insulating pad in through hole.
Preferably, the groove on described upper bracket is identical with the radius of described lower carriage through hole.
Preferably, described interior pillar is provided with the rule of the spacing for showing lowest part through hole and ground on described lower carriage.
Preferably, described base is made of cast iron.
Advantageous Effects of the present utility model:
1. the special stand that provides of the utility model adopts and meets the insulating material that trial voltage requires and be made, safe and reliable, avoid in test because of the too high electric discharge of the flashover to insulating material of trial voltage with puncture.
2. upper bracket and lower carriage adopt concaveconvex structure plug-in type to close, and the radius of groove is not less than 16mm, and the high-tension cable making this support go for all wire diameters uses.
3. the surface of contact of upper bracket and lower carriage is provided with soft insulating pad, firmly excessive when avoiding attached cable head, causes damage to the external insulation layer of cable end.
4. this hv cable termination head test special stand between three phase lines and phase line over the ground between all carried out isolation of insulating, ensure that safe distance during test, Pass Test working specification and safety regulation for operations.
5. pillar adopts the telescopic structure with rule, can according to the environment of testing ground, and carry out corresponding adjustment by pin to test bracket height and meet testing requirements, flexibly and easily, practicality is high.
6. base adopts cast iron materials to make, and weigh about 7.5 kilograms, the corresponding moment needed when can reach test, avoids support and fall down to the ground in test, and cause test to interrupt, practicality is high.
7. this hv cable termination head test special stand, carry out according to the requirement of 35kV high-tension cable withstand voltage test designing the requirement simultaneously also meeting the withstand voltage test of 10kV high-tension cable, the general, safe and practical, convenient and reliable of 10kV, 35kV high-tension cable test is achieved by carrying out corresponding adjustment to pillar, upper bracket and lower carriage.
Accompanying drawing explanation
The main TV structure schematic diagram of the hv cable termination head test bracket that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the structural representation of upper bracket in Fig. 1;
Fig. 3 is the structural representation of lower carriage in Fig. 1;
The main TV structure schematic diagram of the hv cable termination head test bracket that Fig. 4 provides for another embodiment of the utility model;
Fig. 5 is the structural representation of upper bracket in Fig. 4;
Fig. 6 is the structural representation of lower carriage in Fig. 4.
In figure: 1 upper bracket, 101 boss, 102 grooves, 2 lower carriages, 201 cavitys, 202 through holes, 3 pillars, pillar in 301,302 outer pillars, 303 through holes, 304 pins, 305 rules, 4 bases, 5 bolts, 6 nuts.
Embodiment
In order to make those skilled in the art understand the utility model scheme better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Referring to figs. 1 to the main TV structure schematic diagram of the hv cable termination head test bracket that 6, Fig. 1 provides for the utility model embodiment; Fig. 2 is the structural representation of upper bracket in Fig. 1; Fig. 3 is the structural representation of lower carriage 2 in Fig. 1; The main TV structure schematic diagram of the hv cable termination head test bracket that Fig. 4 provides for another embodiment of the utility model; Fig. 5 is the structural representation of upper bracket in Fig. 4; Fig. 6 is the structural representation of lower carriage 2 in Fig. 4.
The utility model provides a kind of high-voltgae pothead test bracket, a kind of hv cable termination head test bracket, it is characterized in that, comprise the upper bracket 1 and lower carriage 2 be made up of the insulating material meeting trial voltage requirement, pillar 3 and base 4, upper bracket 1 comprises boss 101, on boss 101 along the Width of boss 101 be provided with three lateral cross section be circular arc and opening towards the groove 102 of base 4, air line distance between the center of circle of adjacent two grooves 102 is not less than 300mm, the radius of groove 102 is not less than 16mm, lower carriage 2 comprises the cavity 201 coordinating boss 101 to insert, lower carriage 2 is provided with and coordinates three lateral cross section for fixing hv cable termination head to be circular through hole 202 with three grooves 102 on boss 101, on lower carriage 2, the radius of through hole 202 is not less than 16mm, the two ends of upper bracket 1 are connected with nut 6 by bolt 5 to corresponding one end of lower carriage 2 respectively, pillar 3 comprises interior pillar 301 and outer pillar 302, one end of interior pillar 301 is fixedly connected on the bottom of affiliated lower carriage 2, one end of outer pillar 302 is fixedly connected on the top of base 4, interior pillar 301 and affiliated outer pillar 302 are provided with several through holes 303 vertically, when interior pillar 301 is connected to make test by the pin 304 inserting through hole 303 on it with outer pillar 302, on lower carriage 2, the distance of center circle of any one through hole 202 is overhead not less than 300mm.
The utility model is by providing a kind of support be made up of insulating material, by the circular groove of three on upper bracket 1 102 to match with the through hole of three on lower carriage 2 202 three of high-tension cable phase lines are supported fixing, provide a kind of aid being exclusively used in the test of high-voltgae pothead terminal, before solving, the test of hv cable termination head does not have special stand instrument, the interim problem adopting testing ground object; Groove 102 and the radius of through hole 202 on lower carriage 2 are all not less than the high-tension cable that 16mm makes this support go for all wire diameters and use; Air line distance between the center of circle of adjacent two grooves 102 is not less than 300mm, during test, on lower carriage 2, the distance of center circle of any one through hole 202 is overhead not less than 300mm, the test of 10kV, 35kV hv cable termination head can be met between three phase lines and the standard-required of phase line spacing over the ground, make agreement with experimental test operation procedure, improve accuracy and the stability of test findings, also meet safety regulation for operations simultaneously, avoid the generation of electric discharge or drain conditions, improve the security of personnel and testing equipment; Pillar 3 comprise to be connected by pin 304 in pillar 301 and outer pillar 302 pillar 3 can be stretched up and down, thus drive lower carriage 2 oscilaltion, lower carriage 2 is risen during test, every root phase linear distance ground is made to be not less than 300mm, after having tested, fall lower carriage 2, reduce the volume of support, be convenient for carrying transport.
The utility model is cooperatively interacted by three through holes 202 on the groove of three on upper bracket 1 102 and lower carriage 2 and the phase line of high-tension cable is supported fixing, and three grooves 102 on upper bracket 1 are satisfied: the air line distance between the center of circle of adjacent two grooves 102 is not less than 300mm.For this reason, the positional alignment of three grooves 102 on upper bracket 1 has a variety of.In an embodiment of the present utility model, the center of circle of three grooves 102 on upper bracket 1 is parallel on the same straight line of surface level on edge, air line distance between the center of circle of adjacent two grooves 102 is not less than 300mm, three through hole 202 centers of circle on the lower carriage 2 coordinated with it also along being parallel on the same straight line of surface level, are overhead not less than 300mm by the distance of center circle of any one through hole 202 on pillar 3 elevating control lower carriage 2 during test.
The center of circle of three grooves 102 on upper bracket 1 is parallel on the same straight line of surface level on edge, air line distance between the center of circle of adjacent two grooves 102 is not less than 300mm, then the length of upper bracket 1 is at least 600mm, volume is too large, possibly cannot use in some narrow and small testing ground as an aid, for this reason, in an embodiment of the present utility model, the center of circle of three grooves 102 on upper bracket 1 lays respectively on three summits of an equilateral triangle, and wherein the center of circle of two grooves 102 is parallel on the same straight line of surface level on edge.The so spread configuration of three grooves 102 on upper bracket 1, can effectively reduce the length of upper bracket 1, makes this support compact flexible, easy to use with carry.
When the support provided in order to avoid the utility model supports fixing high-tension cable, snap-in force between upper bracket 1 and lower carriage 2 is excessive, damage is caused to the external insulation layer of cable end, in an embodiment of the present utility model, in groove 102 and through hole 202 on lower carriage 2, is provided with soft insulating pad.The material of the utility model to soft insulating pad is not particularly limited, and adopts soft insulating material well known to those skilled in the art to make.
In order to improve versatility and the practicality of the support that the utility model provides, in an embodiment of the present utility model, groove 102 on upper bracket 1 is identical with the radius of lower carriage 2 through hole 202, make this support go for the high-tension cable test of all wire diameters, improve the versatility of this support; Make upper bracket 1 identical with surface of contact with the snap-in force between lower carriage 2 and high-tension cable with surface of contact with the snap-in force between high-tension cable, improve the support fixation of support to high-tension cable, improve the practicality of support.
Conveniently accurately showing the distance between the center of circle of lowest part through hole 202 on lower carriage 2 and ground quickly, pillar 3 being provided with the rule 305 of the spacing for showing lowest part through hole 202 and ground on lower carriage 2.During test, according to the different ground clearances that different tests requires, coordinated with telescopic pillar 3 by rule 305, adjust the distance between the center of circle of lowest part through hole 202 on lower carriage 2 and ground quickly and easily, improve the practicality of support.
In an embodiment of the present utility model, base 4 is made of cast iron, and base 4 adopts cast iron materials to make, weigh about 7.5 kilograms, the corresponding moment needed when can reach test, avoids support and falls down to the ground in test, cause test to interrupt, improve the practicality of support.
Above a kind of hv cable termination head test bracket provided by the utility model is described in detail.Apply specific embodiment herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.