CN103217245A

CN103217245A - Clamping force measurement device used for isolating switch

Info

Publication number: CN103217245A
Application number: CN2013101029657A
Authority: CN
Inventors: 程风华; 夏立国; 吴俊勇; 张任
Original assignee: State Grid Corp of China SGCC; Pinggao Group Co Ltd; Henan Pinggao Electric Co Ltd
Current assignee: State Grid Corp of China SGCC; Pinggao Group Co Ltd; Henan Pinggao Electric Co Ltd
Priority date: 2013-03-27
Filing date: 2013-03-27
Publication date: 2013-07-24
Anticipated expiration: 2033-03-27
Also published as: CN103217245B

Abstract

The invention relates to a clamping force measurement device used for an isolating switch. The clamping force measurement device used for the isolating switch comprises a first extrusion part and a second extrusion part, wherein each extrusion part is a cylinder of which the cross section is arched; the bowstring parts of the two extrusion parts are oppositely arranged; a pressure sensor is arranged between the bowstring parts; two stressed ends of the pressure sensor are respectively fixedly connected with the first extrusion part and the second extrusion part; and the signal output end of the pressure sensor is connected with a pressure display. The device has the advantages of simple structure and high reliability, users can directly read a pressure value via the display so as to bring convenience for operation, and the measurement efficiency and the accuracy are improved.

Description

A kind of disconnector clamping force measurement mechanism

Technical field

The invention belongs to high voltage electrical apparatus technical field, relate to the clamping force measurement mechanism that a kind of scissor disconnector, clamp type disconnector are used.

Background technology

Because State Grid's cause develops rapidly now, disconnector output increases considerably, original clamping force measurement mechanism can not satisfy measurement requirement, but in the high-voltage alternating current isolating switch actual motion, must guarantee that dynamic/static contact contacts reliably, this just requires moving contact that static contact is had enough big acting force, and this acting force is an important indicator weighing the reliable contact of dynamic/static contact.According to user and designing requirement, the size of this power must be tested before product export be come out, and reaches the requirement of properties of product.At present, scissor disconnector, clamp try the disconnector general structure of device for testing clamping force between commonly used factors such as all more complicated, measuring accuracy are inadequately, reliability is not high, operation is not convenient.For example, existing Granted publication number is called the Chinese patent of " device for testing clamping force between moving contact and fixed contact of isolating switch " for the name of CN101710010B, disclose a kind of disconnector sound and lifted one's head device for testing clamping force between, this measurement device process more complicated, operation inconvenience, efficiency of measurement is low, and this is a disconnector clamping force measurement mechanism urgent problem.

Summary of the invention

The purpose of this invention is to provide a kind of disconnector clamping force measurement mechanism, to solve clamping force measurement mechanism measuring process more complicated, to operate the problem inconvenient, that efficiency of measurement is low.

For achieving the above object, the solution of the present invention is: a kind of disconnector clamping force measurement mechanism, comprise first press section and second press section, each press section is xsect and is arc cylinder, the bowstring of two press sections partly is oppositely arranged, between be provided with pressure transducer, fixedly connected with first press section, second press section respectively in two force sides of this pressure transducer, the signal output part of this pressure transducer is connected with pressure display unit.

Set firmly pressure transducer and first press section, second press section by screw.

The described first press section two ends are provided with spacing second press section along the axially movable limited block of first press section.

Disconnector clamping force measurement mechanism of the present invention in use, when disconnector closes a floodgate, the both sides moving contact produces simultaneously to two press sections that a pair of size is identical, direction opposite effect power, this acting force is passed on the pressure transducer that links to each other with two press sections, pressure transducer is passed to pressure display unit with real-time demonstration pressure value with numerical value by data line, installation or testing staff just can adjust corresponding adjusting gear, and then be met the clamping force of designing requirement according to the power value that shows.Apparatus structure of the present invention is simple, reliability is high, makes the user of service directly to read force value by display, has made things convenient for operation, has improved efficiency of measurement and degree of accuracy.Two press sections link together by pressure transducer, face of cylinder of its outer peripheral face basic comprising, be used to simulate a static contact profile, when exerting pressure, two press sections more push static contact at the both sides moving contact like this near the truth lower moving contact, also can pressure transducer stressed evenly, improve measuring accuracy.

Description of drawings

Fig. 1 is the clamping force measurement mechanism assembly synoptic diagram of the embodiment of the invention;

Fig. 2 is the first press section upward view among Fig. 1;

Fig. 3 is a clamping force measurement mechanism utilization structure synoptic diagram;

Fig. 4 is the left view of Fig. 3;

Fig. 5 is the viewgraph of cross-section that extruder member is connected with pressure transducer among Fig. 1;

Fig. 6 is the structural representation of first press section among Fig. 1;

Fig. 7 is the A-A cut-open view of Fig. 6;

Fig. 8 is the structural representation of second press section among Fig. 1;

Fig. 9 is the B-B cut-open view of Fig. 8.

Embodiment

Be depicted as user mode figure as Fig. 3,4, two moving contacts 5 of scissor disconnector clamp, and clamp the clamping force measurement mechanism 6 of present embodiment, and clamping force F as shown in Figure 4.The stressed sensing part of clamping force measurement mechanism has simulated that the profile of static contact---integral body is column type, the stressed sensing part of clamping force measurement mechanism is made of two parts, as Fig. 2, first press section 2 and second press section 3, first press section and second press section all are that xsect is arc cylinder, bowstring partly for corresponding plane, between pressure transducer 1 is set, pressure transducer connects display.Two press sections are combined, and the outer peripheral face of back of a bow part synthesizes column type substantially.

The example that is measured as with the moving contact clamping force of the scissor high-voltage alternating current isolating switch of GW46 series, when high-voltage alternating current isolating switch closes a floodgate, it is identical that 5 pairs first press sections of both sides moving contact and second press section produce a pair of size simultaneously, direction opposite effect power, this acting force has been passed to coupled pressure transducer, pressure transducer is passed to coupled pressure display unit with the power value by data line, pressure display unit is presented at the power value on the display screen in real time, installation or testing staff just can be according to the power values that shows, adjust corresponding adjusting gear, and then be met the clamping force of designing requirement.

As a kind of embodiment, as shown in Figure 1 and Figure 2, the two ends, the left and right sides between two press sections are fixed with pressure transducer 1 respectively, and the signal output part of pressure transducer 1 is connected with the pressure display unit 4 that can show force value.Pore among Fig. 2 is represented the attachment screw 9 of the pressure transducer 1 and first press section 2.

Be depicted as the structural representation of first press section as Fig. 6,7, be depicted as the structural representation of second press section as Fig. 8,9.

As shown in Figure 5, among the figure first press section 2 and being connected of second press section 3 be exactly by the web member joint that carries on the pressure transducer with and threaded hole.Assembly method is earlier sensor to be fixed on first extruder member 2, and then with screw second extruder member 3 is fixed on pressure transducer 4 other ends.

The outer peripheral face of first press section and second press section constitutes a circumference, so just, simulated the static contact profile, like this both sides moving contact when two press sections are exerted pressure more near truth lower moving contact extruding static contact, also can pressure transducer stressed evenly, improve measuring accuracy.

In order in extrusion process, not occur relative slip between first press section and second press section, can between two press sections, position limiting structure be set because of longitudinal force makes.As shown in Figure 6, the first press section two ends are provided with limited block 8 towards the second press section direction, stop moving axially of relative first press section of second press section.

Claims

1. disconnector clamping force measurement mechanism, it is characterized in that: comprise first press section and second press section, each press section is xsect and is arc cylinder, the bowstring of two press sections partly is oppositely arranged, between be provided with pressure transducer, fixedly connected with first press section, second press section respectively in two force sides of this pressure transducer, the signal output part of this pressure transducer is connected with pressure display unit.

2. a kind of disconnector clamping force measurement mechanism according to claim 1 is characterized in that: set firmly pressure transducer and first press section, second press section by screw.

3. a kind of disconnector clamping force measurement mechanism according to claim 1 is characterized in that: the described first press section two ends are provided with spacing second press section along the axially movable limited block of first press section.