CN105698666A - Precise-measurement-realization-based measuring device for engagement depth of circuit breaker contacts - Google Patents

Abstract

Disclosed in the invention is a precise-measurement-realization-based measuring device for engagement depth of circuit breaker contacts. The measuring device comprises six sets of displacement sensors that are installed in counter sinks inside six moving contacts of an A phase, a B phase, and a C phase of a handcart type circuit breaker of a high-voltage switch cabinet. A power line and a signal line are led out from a peripheral gap of a plum-blossom contact and are led out of the high-voltage switch cabinet by the space of the handcart type circuit breaker and then are connected with a data processing device; and the data processing device is connected with a display device. The provided measuring device has advantages of reasonable structure and convenient and accurate measurement.

Description

Realize the contact of breaker depth of engagement measurement apparatus accurately measured

The application is the divisional application of application number 201410341258.8, applying date 2014.7.18, title " closing armouring high-voltage switch cubicle handcart formula contact of breaker depth of engagement measurement apparatus "。

Technical field

The present invention relates to a kind of closing armouring high-voltage switch cubicle handcart formula contact of breaker depth of engagement measurement apparatus。

Background technology

High-tension switch cabinet refers to for playing the effects such as break-make, control or protection in power system generating, transmission of electricity, distribution, electric energy conversion and consumption; high-tension switch cabinet is by making the electric pressure electric equipment products at 3.6kV ~ 550kV; high voltage isolator and earthed switch, high voltage load switch, high pressure automatic reclosing and sectionaliser, several big classes such as high-voltage actuating mechanism, high-voltage explosion-proof power distribution equipment and high-tension switch cabinet。

High-tension switch cabinet has the functions such as built on stilts line, cable incoming-outgoing wire, bus contact。It is primarily adapted for use in various different fields such as power plant, transformer station, petrochemical industry, metallurgical steel rolling, industry light industry textile industry, industrial enterprise and residential quarters, skyscraper etc.。

High-tension switch cabinet should meet ac metal closing switch gear, and " the relevant requirement of standard, is made up of cabinet and chopper two major part, and cabinet is made up of housing, electric elements (including insulating part), various mechanism, secondary terminals and line etc.。

High-tension switch cabinet is divided into withdraw-type (handcart-type) and fixed by chopper mounting means；It is divided into indoor and outdoor by infield；Metal enclosed armoured switch cabinet, the metal enclosed box switch cubicle of metal enclosed spaced switch cabinet and the big class of open type switch cubicle four can be divided into by cabinet body structure。

Armored indoor, metal enclosed, high-tension switch cabinet with handcart type breaker, be commonly referred to armoured removable type alternating (hereinafter referred to as switch cubicle), and its common voltage grade includes 10kV, 20kV, 35kV etc.。It is mainly used in power plant, transformer station, medium and small generator power transmission, industrial and mineral enterprises and institutions distribution and Large-scale High-Pressure motor starting etc.。For accepting and distribute electric energy, and circuit is carried out control, protection and monitoring。

Switch cubicle is by the cabinet fixed and can remove parts (handcart) two large divisions and forms。Can removing parts (handcart) to be made up of chassis and breaker body, propulsive mechanism is arranged on inside chassis。Two sides, chassis are respectively equipped with 2 wheels, built-in needle bearing so that handcart is light and flexible when advancing, pulling out。Handcart is divided into circuit breaker cart, isolation handcart, voltage mutual inducer trolley, earth handcart etc.。According to the function of electrical equipment in cabinet, cabinet dividing plate is divided into four different functional units, including: breaker chamber, bus-bar room, cable vault and control room。Dividing plate between shell and each functional unit of cabinet all adopts the bending of aluminizing zine plate to form。The static contact of chopper is installed in the cabinet side that breaker chamber is fixing, parts (handcart) side can be removed the moving contact of breaker (Mume flower contact) of pairing is installed, the breaker chamber portion closed it is to occur at, it is impossible to the depth of engagement of both direct vision during the two engagement。

High-tension switch cabinet operates, and wheelbarrow switch moves to operating position, hand wheelbarrow switch from testing position, and moving contact starts counting up when entering static contact, until shaking this LAP to operating position, is engagement (insertion) degree of depth of dynamic/static contact。

Having to check for the depth of engagement of handcart type breaker dynamic/static contact after switch cubicle is newly installed, the depth of engagement of 10kV～35kV handcart type breaker dynamic/static contact is 15～30mm, and measurement size must be extremely accurate to grade。Traditional measuring method is: be coated with a small amount of vaseline on static contact, handcart is pushed into run location, then is pulled out by handcart outside cabinet, stays the impression on static contact when then measuring the engagement of handcart dynamic/static contact。Wheelbarrow switch, the hand process to operating position be can't see, hands also touch less than, this original measurement method can only be adopted, sized data error is very big, especially in summer high-temperature season, when temperature is more than 35 DEG C, vaseline liquefaction, does not see impression, even without impression, check and accept to in-site measurement and bring very big difficulty, it is impossible to ensure accurate, the reliable contacts (must under bus bar side and feeder line side power-off condition) of handcart type breaker dynamic/static contact, and easily make mistakes。

Summary of the invention

It is an object of the invention to provide a kind of rational in infrastructure, measure conveniently, close armouring high-voltage switch cubicle handcart formula contact of breaker depth of engagement measurement apparatus accurately。

The technical solution of the present invention is:

A kind of closing armouring high-voltage switch cubicle handcart formula contact of breaker depth of engagement measurement apparatus, it is characterized in that: include six set displacement transducers, six set displacement transducers are loaded in the internal counter sink of 6 moving contacts of A, B, C three-phase of high-voltage switch cubicle handcart formula chopper respectively, power line and holding wire are drawn in the space, border of moving contact, and draw high-tension switch cabinet through the space of handcart type breaker, being connected with data processing equipment, data processing equipment is connected to man machine interface display module；Displacement transducer selects contact or guiding back springing type displacement transducer, transducer range is chosen as 10mm ~ 100mm, sensor accuracy is chosen as 0.1% ~ 1%, and sensor power power supply selects direct current 5V, 10V, 12V or 24V electric pressure, and the output of displacement transducer is chosen as voltage 0 ~ 5V or 0 ~ 10V；Or the output of displacement transducer is chosen as current signal 0 ~ 10mA, 0 ~ 20mA or 4 ~ 20mA；

When after handcart type breaker push-on switch cabinet, moving contact starts counting up when entering static contact, namely the push rod top of displacement transducer to static contact time start counting up, until handcart moves to operating position, one section of displacement stroke can be produced, this LAP is the depth of engagement of dynamic/static contact, and this displacement stroke reads through sensor detection and output, data processing equipment and processes, and may finally directly display displacement stroke data in the man machine interface display module of this measurement apparatus；Determining whether the dynamic/static contact depth of engagement requirement reaching high-voltage switch cubicle handcart formula chopper through staff, if reaching requirement, handcart can be removed, remove this measurement apparatus, reset handcart operating position；If not reaching requirement, then requiring that staff removes handcart, increasing or reducing static contact as required and the quantity of pad is installed, then repeating above-mentioned work, till meeting requirement。

The invention provides a kind of metal enclosed armouring high-voltage switch cubicle handcart formula contact of breaker depth of engagement intelligent measuring device, " solving the problems such as the technique in in-site installation, debugging, measurement, examination is loaded down with trivial details, measurement difficulty greatly, is easily made mistakes, it is ensured that the precision of measurement, dynamic/static contact reliable contacts " will be had very great meaning。

The present invention program is reasonable, during use, displacement sensor module is arranged in the internal counter sink of moving contact (Mume flower contact) of high-voltage switch cubicle handcart formula chopper, ensure that displacement transducer push rod (pin) can synchronize to touch static contact with moving contact, power line and holding wire are drawn in the space, border of Mume flower contact, and draw high-tension switch cabinet through the space of handcart type breaker。When after handcart type breaker push-on switch cabinet, moving contact starts counting up when entering static contact, namely the push rod (pin) of displacement transducer starts counting up when pushing up to static contact, until handcart moves to operating position, one section of displacement stroke can be produced, this LAP is engagement (insertion) degree of depth of dynamic/static contact, and this displacement stroke can show in the man machine interface of this measurement apparatus。The accurate measurement of handcart type breaker dynamic/static contact engagement can be realized, convenient and reliable, the problems such as the measurement difficulty solving traditional measurement method is big, sized data error big, reliability is not high, accurately measure realizing the metal enclosed armouring high-voltage switch cubicle handcart formula contact of breaker depth of engagement, guarantee that dynamic/static contact reliable contacts has very great meaning。This measurement apparatus is finally measured and display precision is up to ± 0.1mm。

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the invention will be further described。

Fig. 1 is the structural representation of one embodiment of the invention。

Detailed description of the invention

A kind of closing armouring high-voltage switch cubicle handcart formula contact of breaker depth of engagement measurement apparatus, including six set displacement transducers 1, six set displacement transducers are loaded in the internal counter sink of six moving contacts 6 of A, B, C three-phase of high-voltage switch cubicle handcart formula chopper respectively, power line and holding wire are drawn in the space, border of moving contact (Mume flower contact), and draw high-tension switch cabinet through the space of handcart type breaker, being connected with data processing equipment 2, data processing equipment is connected to display device (example man machine interface) 3。Figure also has supply unit 8。

Data processing equipment adopts the data handling equipment (such as forms such as data collecting cards) of existing maturation, and display device can select the forms such as digital quantity display instrument, PDA or direct display in a computer。

Displacement transducer selects contact, guiding back springing type displacement transducer, such as differential transformer displacement sensor, transducer range is chosen as 10mm ~ 100mm, sensor accuracy is chosen as 0.1% ~ 1%, sensor power power supply selects the conventional measurement apparatus electric pressures such as direct current 5V, 10V, 12V or 24V, and the output of displacement transducer is chosen as common voltage (0 ~ 5V or 0 ~ 10V) or conventional current signal (0 ~ 10mA, 0 ~ 20mA or 4 ~ 20mA)。

Including six set displacement transducers, six set displacement transducers are loaded in the internal counter sink of 6 moving contacts of A, B, C three-phase of high-voltage switch cubicle handcart formula chopper respectively, power line and holding wire are drawn in the space, border of Mume flower contact, and draw high-tension switch cabinet through the space of handcart type breaker, being connected with data processing equipment, data processing equipment is connected to man machine interface display module；Displacement transducer selects contact or guiding back springing type displacement transducer, transducer range is chosen as 10mm ~ 100mm, sensor accuracy is chosen as 0.1% ~ 1%, and sensor power power supply selects direct current 5V, 10V, 12V or 24V electric pressure, and the output of displacement transducer is chosen as voltage 0 ~ 5V or 0 ~ 10V；Or the output of displacement transducer is chosen as current signal 0 ~ 10mA, 0 ~ 20mA or 4 ~ 20mA；

When after handcart type breaker 4 push-on switch cabinet 5, moving contact 6 starts counting up when entering static contact 7, namely the push rod top of displacement transducer to static contact time start counting up, until handcart moves to operating position, one section of displacement stroke can be produced, this LAP is the depth of engagement of dynamic/static contact, and this displacement stroke reads through sensor detection and output, data processing equipment and processes, and may finally directly display displacement stroke data in the man machine interface display module of this measurement apparatus；Determining whether the dynamic/static contact depth of engagement requirement reaching high-voltage switch cubicle handcart formula chopper through staff, if reaching requirement, handcart can be removed, remove this measurement apparatus, reset handcart operating position；If not reaching requirement, then requiring that staff removes handcart, increasing or reducing static contact as required and the quantity of pad is installed, then repeating above-mentioned work, till meeting requirement。

Claims (1)

1. the contact of breaker depth of engagement measurement apparatus realizing accurately measurement, it is characterized in that: include six set displacement transducers, six set displacement transducers are loaded in the internal counter sink of 6 moving contacts of A, B, C three-phase of high-voltage switch cubicle handcart formula chopper respectively, power line and holding wire are drawn in the space, border of moving contact, and draw high-tension switch cabinet through the space of handcart type breaker, being connected with data processing equipment, data processing equipment is connected to man machine interface display module；Displacement transducer selects contact or guiding back springing type displacement transducer, transducer range is chosen as 10mm ~ 100mm, sensor accuracy is chosen as 0.1% ~ 1%, and sensor power power supply selects direct current 5V, 10V, 12V or 24V electric pressure, and the output of displacement transducer is chosen as voltage 0 ~ 5V or 0 ~ 10V；Or the output of displacement transducer is chosen as current signal 0 ~ 10mA, 0 ~ 20mA or 4 ~ 20mA；Data processing equipment adopts data collecting card；Display device adopts the form directly shown in a computer；

When after handcart type breaker push-on switch cabinet, moving contact starts counting up when entering static contact, namely the push rod top of displacement transducer to static contact time start counting up, until handcart moves to operating position, one section of displacement stroke can be produced, this LAP is the depth of engagement of dynamic/static contact, and this displacement stroke reads through sensor detection and output, data processing equipment and processes, and may finally directly display displacement stroke data in the man machine interface display module of this measurement apparatus；Determining whether the dynamic/static contact depth of engagement requirement reaching high-voltage switch cubicle handcart formula chopper through staff, if reaching requirement, handcart can be removed, remove this measurement apparatus, reset handcart operating position；If not reaching requirement, then requiring that staff removes handcart, increasing or reducing static contact as required and the quantity of pad is installed, then repeating above-mentioned work, till meeting requirement。