CN202405941U

CN202405941U - Anti-explosion electric executing mechanism for high-pressure flow auto-control instrument

Info

Publication number: CN202405941U
Application number: CN201120477711XU
Authority: CN
Inventors: 林浩
Original assignee: Shanghai Yinuo Instrument Co Ltd
Current assignee: Shanghai Yinuo Instrument Co Ltd
Priority date: 2011-11-26
Filing date: 2011-11-26
Publication date: 2012-08-29
Anticipated expiration: 2021-11-26

Abstract

An anti-explosion electric executing mechanism for a high-pressure flow auto-control instrument is characterized in that: a gear of a motor is engaged with a gear of a reduction gear box; the gear of the reduction gear box is engaged with a worm transmission gear; a worm is engaged with a worm gear; the motor, the reduction gear box, and the worm transmission gear are arranged on the same axis; an output shaft is fixedly connected with one end of a center hole of the worm gear; one end of a limiting shaft successively passes through a center hole of a limiting cam and a fixing frame, and is fixedly connected with the other end of the center hole of the worm gear, the limiting cam is fixedly connected with the limiting shaft; the other end of the limiting shaft is fixedly connected with a dial; a position of a potentiometer switch is corresponding to the limiting cam, a bulge of the limiting cam is perpendicular to a contact of the limiting switch; the potentiometer switch is fixedly connected on the fixing frame; the potentiometer switch is connected with the motor through a lead; a reduction ratio of the reduction gear box is 1:2116, the motor adopts a direct current power supply or an alternating current power supply, and the power of the motor is 25W. When being applied to the high-pressure flow auto-control instrument, the anti-explosion electric executing mechanism of the utility model can realize no manual control, and can ensure control precision and reliability.

Description

High pressure flow auto-controlling apparatus anti-explosion electric actuator

Technical field

The utility model relates to high pressure flow auto-controlling apparatus flow detection part and slowing-down structure, is specifically related to a kind of anti-explosion electric actuator.

Background technology

High pressure flow auto-controlling apparatus is because itself technology is obtaining extensive application aspect the high pressure underground flooding of oil field at present.

Flow detection that high pressure flow auto-controlling apparatus is present and reducing gear are separate form, and what its slowing-down structure adopted is that by the direct drive mechanism of motor power supply drive worm and gear rotation, its supply power mode can only adopt the 220V power supply; This kind structure comprises motor, motor cover, worm screw, worm gear, worm gear case, handwheel.The shortcoming of this structure is: because employing is the direct drive mode of motor and worm and gear, its speed reducing ratio has only 1:40, thereby makes power demand of motors higher; Require the motor of power more than 70W just can drive worm screw and drive worm gear work; Thereby the volume of worm gear case is increased, and the consequence of bringing thus is not only seriously to have influenced its useful life; Also having influenced simultaneously the overall structure of high pressure flow auto-controlling apparatus, also is totally unfavorable to market exploitation from now on.

Summary of the invention

The purpose of the utility model is, solves the problem that above-mentioned prior art exists, and a kind of high pressure flow auto-controlling apparatus anti-explosion electric actuator is provided.

A kind of high pressure flow auto-controlling apparatus anti-explosion electric actuator is characterized in that gear on the motor output shaft and reduction gear box gears engaged; Reduction gear box gear and worm drive gear engagement; The centre bore of worm drive gear is fixedly connected worm screw; The worm and wheel engagement;

Motor, reduction gear box, worm drive gear are in same axis;

Output shaft is fixedly connected with worm gear centre bore one end; Output shaft connects housing through bearing;

Limit shaft one end passes centre bore, the fixed mount of limit cam successively, is fixedly connected with the centre bore other end of worm gear, and limit cam and limit shaft are affixed; The limit shaft other end is fixedly connected dial; Simultaneously, the position of potentiometer switch is corresponding with limit cam, and the bossing of limit cam becomes 90 ° with the limit switch contact; Potentiometer switch is fixedly connected on the fixed mount; Potentiometer switch is connected with motor through lead; Motor, worm gear, worm screw all are arranged in the housing through bearing; Reduction gear box, fixed mount all are fixed in the housing.

The speed reducing ratio of said reduction gear box is 1:2116, and described motor adopts the AC220 power supply, or AC24V or DC24V power supply, and power of motor is 25W.

The utility model has the advantages that, 1, advantages of small volume, than former reducing gear volume-diminished 35%.2, return difference is minimum, and integrated, as to have avoided key joint gap is adopted in worm gear output, and transmission accuracy is high.3, supporting simple, can use direct current, exchange two kinds of supply power modes, make user selection more.4, owing to improved drive mechanism, adopted high speed reducing ratio gear reduction box, making speed reducing ratio is tens times of original reducing gear.5, low in energy consumption.Owing to adopted new-type gear reduction box to increase output torque greatly, use 25W low-power consumption motor just can make the accurately operation stably of whole electric operator, practice thrift the cost purpose thereby reach.

Description of drawings

Accompanying drawing 1 is the utility model structural representation;

Accompanying drawing 2 is Fig. 1 upwarding cutaway views;

Accompanying drawing 3 is Fig. 1 upwarding cutaway views;

Accompanying drawing 4 is that Fig. 1 takes off manual outer cover structure sketch map;

Accompanying drawing 5 is the utility model surface structure sketch mapes.

1 housing, 2 potentiometer protective covers, 4 manual enclosing covers, 5 motors, subtract 6 fast gear boxes, 7 worm drive gears, 8 worm gears, 9 worm screws, 10 fixed mounts, 11 potentiometer switch, 12 mechanical position limitation screws, 13, limit shaft, 14 cams of limit, 15 dials, 16 output shafts, 161 positive stops.

Embodiment

A kind of high pressure flow auto-controlling apparatus anti-explosion electric actuator, gear on motor 5 output shafts and reduction gear box 6 gears engaged; Reduction gear box gear and worm drive gear 7 engagements; The centre bore of worm drive gear 7 is fixedly connected worm screw 9; Worm screw 9 and worm gear 8 engagements;

Motor 5, reduction gear box 6, worm drive gear 7 are in same axis;

Output shaft 16 is fixedly connected with worm gear 8 centre bores one end; Output shaft 16 connects housing through bearing;

Limit shaft 13 1 ends pass centre bore, the fixed mount 10 of limit cam 14 successively, are fixedly connected with the centre bore other end of worm gear 8, and limit cam 14 is affixed with limit shaft 13; Limit shaft 13 other ends are fixedly connected dial 15; Simultaneously, the position of potentiometer switch 11 is corresponding with limit cam 14, and the bossing of limit cam becomes 90 ° with the limit switch contact; Potentiometer switch 11 is fixedly connected on the fixed mount 10;

Potentiometer switch 11 is connected with motor through lead; Motor 5, worm gear 8, worm screw 9 are arranged in the housing through bearing; Reduction gear box 6, fixed mount 10 all are fixed in the housing.

Potentiometer protective cover 2 be positioned at dial 15 tops and housing affixed; Manually enclosing cover 4 is positioned at motor 5 outsides, and is affixed with housing.Be convenient to maintenance like this.

Output at output shaft 16 is provided with positive stop 161, and housing 1 side is provided with the mechanical position limitation screw 12 that the cross section is a fusiformis; The corresponding positive stop 161 in the position of mechanical position limitation screw.

During work, when motor 5 reaches reduction gear box 6 with power, with 7 engagements of worm speed-down gear, again power is reached worm screw 9, worm screw 9 is rotated and is meshed with worm gear 5; The power that this moment, worm screw produced drives the limit cam 14 on the limit shaft 13, and limit cam 14 rotates and touches limit switch 11, and limit switch 11 is given control circuit through the lead that links to each other with control circuit with signal feedback.When limit switch is malfunctioning; Positive stop 161 on the output shaft rotates to mechanical position limitation screw 12 places that are fixed on housing 1 side, and motor 5 can quit work by force, if there is not this function; Motor can produce unnecessary energy resource consumption because constantly work, thereby has increased cost.

The utility model is applied on the high pressure flow auto-controlling apparatus, can realize that actuator need not Artificial Control, guarantees control precision and reliability, and long time continuous working can not cause precision and reliability decrease, has prolonged the useful life of equipment.

Claims

1. a high pressure flow auto-controlling apparatus anti-explosion electric actuator is characterized in that, gear on the motor output shaft and reduction gear box gears engaged; Reduction gear box gear and worm drive gear engagement; The centre bore of worm drive gear is fixedly connected worm screw; The worm and wheel engagement;

Motor, reduction gear box, worm drive gear are in same axis;

Limit shaft one end passes centre bore, the fixed mount of limit cam successively, is fixedly connected with the centre bore other end of worm gear, and limit cam and limit shaft are affixed; The limit shaft other end is fixedly connected dial; Simultaneously, the position of potentiometer switch is corresponding with limit cam, and the bossing of limit cam becomes 90 ° with the limit switch contact; Potentiometer switch is fixedly connected on the fixed mount;

Potentiometer switch is connected with motor through lead;

Motor, worm gear, worm screw all are arranged in the housing through bearing;

Reduction gear box, fixed mount all are fixed in the housing;

2. according to the described high pressure flow auto-controlling apparatus anti-explosion electric of claim 1 actuator, it is characterized in that it is affixed with housing that the potentiometer protective cover is positioned at the dial top; Manually enclosing cover is positioned at the motor outside, and is affixed with housing.

3. according to claim 1 or 2 described high pressure flow auto-controlling apparatus anti-explosion electric actuators, it is characterized in that be provided with positive stop at the output of output shaft, side is provided with the mechanical position limitation screw that the cross section is a fusiformis; The corresponding positive stop in the position of mechanical position limitation screw.