CN2092802U

CN2092802U - Inductionless resistance

Info

Publication number: CN2092802U
Application number: CN 91214711
Authority: CN
Inventors: 郭云
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-07-10
Filing date: 1991-07-10
Publication date: 1992-01-08

Abstract

The utility model relates to a resistor, particularly a resistor with resistor elements in the shape of continuous plane waves. The peaks and the troughs of the wave peaks and the wave troughs of the resistor are respectively installed at non inductive resistors for supporting and positioning, which are positioned at the outer sides of a pair of insulating support devices. Each of the insulating support frames is composed of a strip-shaped support cover, a strip-shaped support seat, a stop sheet, etc. The peaks and the troughs of the wave peaks and the wave troughs of the resistor elements are respectively installed and distributed on the outer sides of the pair of the insulating support devices, and the straight line parts among the wave peaks and the wave troughs are installed and distributed at the inner parts of the pair of insulating support frames. The utility model is suitable for starting and adjusting electric motors, discharging electricity, etc. in occasions of 50HZ or 60HZ alternating current and voltage equal to or lower than 660V, and direct current and voltage equal to or lower than 440V. The utility model is particularly suitable for being used in environments with severe operating conditions.

Description

Inductionless resistance

The utility model relates to a kind of resistor, particularly a kind of no-induction resistor.

Z * 9 type noninductive resistors in the present prior art, its major defect and deficiency are:

(1) section resistance is to be formed by many waveform resistor disc units in series, make this section resistance contact numerous, and different with its connector surface quality and impaction state, make the contact place exist a large amount of contact resistances in various degree, in use, because copper ring, the difference of mica sheet and resistor disc line coefficient of dilatation separately, be in the vibration environment operating mode in addition, to the poor electric contact that makes above-mentioned contact place, cause the abnormal heating at contact place and scaling loss in various degree, cause the open circuit or the short circuit of resistor disc in the resistor, make electric equipment imbalance or phase-deficient operation mutually occur, produce strong vibration, even burn electric equipment (as motor etc.), its poor reliability, useful life is low;

(2) because each bar resistor disc unit is upper support to be located at the screw rod of band high temperature insulation cover by the borehole jack of its end, make the wave of resistor disc be distributed in above-mentioned screw rod between, thereby the high temperature that is produced under the adverse circumstances of big electric current can make resistor disc swollen the rising that be heated, easily cause above-mentioned screw rod between short circuit between the sheet of each resistor disc, thereby influence the normal operation of electric equipment;

(3) this structure is for the installation of resistor disc, safeguard, change also very loaded down with trivial details, also often because of safeguarding or changing in the process of resistor disc, cause mica sheet damage in various degree, the insulation property between resistor disc are reduced, cause the short circuit between resistor disc, the short circuit of this part generally also is difficult for being found, thereby causes the abnormal running of electric equipment.

For overcoming above-mentioned shortcoming with not enough, the purpose of this utility model is to provide a kind of contact few, and contact resistance is little and stable, resistive element is easy to install, safeguard the resistor of replacing, particularly a kind of new construction of the highly reliable no-induction resistor that is suitable for using under the bad working environments.

For achieving the above object the utility model is achieved like this:

This resistor is a kind of no-induction resistor, and by resistive element, insulation supporting device is right, and metal frame is formed.Resistive element is a continuous plane wave shape wave resistance, and be shaped on location hole at the two ends of this resistive element, continuous part between the crest of its wave and the peak of trough and the paddy end keeps wide, and width is greater than to each other electric insulation distance and creepage distance, when the quantity of crest and trough is identical (when turning to odd number trace), the inductance that makes thereon to be produced is cancelled out each other, like this, for each bar resistive element, contact on it just is two outputs of this resistive element (section resistance), and its quantity reaches minimum, the contact resistance minimum, the resistance of output is evenly stablized, and is subjected to the little and reliability height of Effect of Environmental; Insulation supporting device is by bar shaped supporting lid, the bar shaped supporting base, terminal base is right, the screw rod of the band hexagonal body of rod, packing ring, pressing plate, screw, nut, locking plate is formed, two ends at bar shaped supporting lid, vertically be shaped on slotted eye respectively along it, along the bar shaped supporting base laterally, be shaped on the above draw-in groove in three roads and three roads respectively, be parallel to each other between draw-in groove, its remain at interval with resistive element on crest (or trough) with wide, vertical (axially) along the bar shaped supporting base is shaped on the hexagon through hole, and the inwall of the bottom land of draw-in groove and hexagon through hole is separated by and keep its enough electric insulation distance, on terminal base, be shaped on the screw and the hexagon through hole of two mutual vertical distribution respectively, the screw axis of output that wherein is used for fixing resistive element is vertical with the hexagon through hole, but it is non-intersect, keep the interval between its screw inner surface and hexagon through-hole inner surface to reach enough electric insulation distances, bar shaped supporting base like this, terminal base is to passing through the hexagon through hole on it, be enclosed within respectively on the screw rod of being with the hexagonal body of rod and circumferentially locate, its terminal base is placed in the two ends of bar shaped supporting base respectively, by the packing ring on the above-mentioned screw rod, the nut adjustment clamps longitudinal register on screw rod, resistive element by the bar shaped supporting base to each last road draw-in groove and bar shaped supporting base to one of the screw location of terminal base at two ends, through pressing plate, screw in compression and output resistance, cover the slotted eye at two ends by the bar shaped supporting, use packing ring, screw is fixed on the terminal base of bar shaped supporting base to two ends, and the peak and valley end that makes the crest of resistive element and trough is installed respectively and is distributed in the right outside of bar shaped supporting base, and all the other straightway parts, then install and be distributed in the right inboard of bar shaped supporting base, thereby make resistive element except that each last road draw-in groove being done short-range the moving about along the bar shaped supporting base, all the other all directions all are subjected to the right restriction of insulation supporting device, simultaneously, when resistive element when being subjected to that high temperature is swollen to rise, the swollen amount of rising of its line all can stretch each last draw-in groove laterally along the bar shaped bearing, both made resistive element can insulation supporting device on effective location, avoided between each road resistance generation again because of the swollen short circuit between the sheet that produces of rising of being heated, the reliability of this resistor is further improved, the insulation supporting device that resistive element is housed matches to the screw rod that has the hexagonal body of rod by it thread segment and the locking plate to the band locking groove of end, clamp through nut, locking plate is stopped on the metal frame.

Compared with the prior art the utility model has following advantage:

1, because section resistance is the resistive element of a no intermediate contact:

(1) make the number of connections of resistor reach minimum with this resistive element, thereby reduced loose contact widely because of the contact place, contact resistance inhomogeneous, the unstable contact place scaling loss that is caused, avoid the open circuit of resistive element or the possibility of short circuit, improved the reliability and the useful life of resistor widely.

(2) under the reliability of resistor and the prerequisite that is improved useful life, saved connectors such as a large amount of copper rings, mica sheet, packing ring, nut again, securing member makes the manufacturing cost of resistor reduce more than 10%.

2, because insulation supporting device has adopted bar shaped supporting lid, the bar shaped supporting base, terminal base is to fixing the supporting resistive element:

(1) make the location of resistive element reasonable, reliable, make its installation, check that safeguard, change very conveniently, the saving of labor saves time again.

(2) make under the high temperature action that resistive element produced in big electric current adverse circumstances operating mode, can be along the draw-in groove on each road bar shaped supporting base to free swollen the rising in its outside, stretch, and the difficult short circuit that each adjacent continuous part between resistive element takes place, make the reliability of resistor obtain further raising, satisfy its need of work in the adverse circumstances operating mode.

3, since bar shaped supporting base, terminal base to being by circumferentially fixing on the screw rod of the band hexagonal body of rod, and its screw rod by locking plate, nut is fastening and be stopped on the metal frame.Make the location of insulation supporting device on metal frame reliable, be difficult for connecting the loosening location of resistive element and the integral rigidity of resistor of influencing of securing member because of the vibration of environment.

Below more in conjunction with the accompanying drawings with embodiment, the explanation (the utility model be not subjected to the restriction of embodiment) detailed in addition to the utility model.

Fig. 1 is the vertical view of the horizontal no-induction resistor that the utility model proposes.

Fig. 2 is the local section cutaway view of the horizontal no-induction resistor that the utility model proposes.

The no-induction resistor is by resistive element (1), and insulation supporting device (2,3,4,5,6,7,8,9,10) is right, and metal frame (11) is formed; Resistive element (1) is a continuous level waveform section resistance that is formed through coiling by the ribbon resistance sheet, be shaped on location hole respectively at its two ends, adjacent continuous part keeps wide between the peak and valley end of the crest of its wave and trough, and width is greater than to each other electric insulation distance and creepage distance; Insulation supporting device (2,3,4,5,6,7,8,9,10) is by bar shaped supporting lid (2) bar shaped supporting base (3), terminal base (4) is right, pressing plate (5), screw (6), packing ring (7), nut (8), the screw rod (9) of the band hexagonal body of rod, locking plate (10) is formed, at the two ends of bar shaped supporting lid (2).Be shaped on slotted eye respectively along its vertical (axially), on bar shaped supporting base (3), laterally be shaped on three roads and the draw-in groove more than three roads respectively along it, be parallel to each other between draw-in groove, its remain at interval with resistive element (1) on crest (or trough) with wide, vertical (axially) along bar shaped supporting base (3) is shaped on the hexagon through hole, and the inwall of this through hole and the groove bottom of draw-in groove are isolated, and keep its enough electric insulation distance, on terminal base (4), be shaped on the screw and the hexagon through hole of two mutual vertical distribution respectively, the screw axially bored line that wherein is used for fixing the output of resistive element (1), vertical and non-intersect with the hexagon through hole, and keep the interval between screw inner surface and hexagon through-hole inner surface to reach enough electric insulation distances, bar shaped supporting base (3), terminal base (4) is to passing through the hexagon through hole on it, the screw rod (9) that is enclosed within the band hexagon body of rod is respectively gone up circumferentially location, its terminal base (4) is gone up the packing ring at two ends respectively by screw rod (9), the nut adjustment clamps bar shaped supporting base (3) longitudinal register on screw rod (9), resistive element (1) then by bar shaped supporting base (3) to each last road draw-in groove and bar shaped supporting base (3) to one of the right screw location of terminal base (4) at two ends, by pressing plate (5), screw (6) compresses and output resistance.Bar shaped supporting lid (2) is by the slotted eye at its two ends, by packing ring (7), screw (6) is separately fixed on the terminal base (4) at bar shaped supporting base (3) two ends, and the peak and valley end parts that makes the crest of resistive element (1) and trough is installed respectively and is distributed in the right outside of bar shaped supporting base (3), all the other straightway parts are then installed and are distributed in the right inboard of bar shaped supporting base (3), thereby make resistive element (1) except that along bar shaped supporting base (3) to doing short-range the moving about in each last road draw-in groove, all the other all directions all are subjected to insulation supporting device (2,3,4,5,6,7,8,9,10) right restriction, the insulation supporting device (2 of resistive element (1) is housed, 3,4,5,6,7,8,9,10) screw rod (9) that has the hexagon body of rod by it thread segment and the locking plate (10) to the band locking groove of end matched, clamp through nut (8), locking plate (10) is locked on the metal frame (11), its bar shaped supporting base (3) also can be made into one with terminal base (4), constitutes the bar shaped supporting base (3 of band edge stroma (4), 4).

For resistive element of the present utility model (1), adopt the coiling of Aludirome resistive band, noodles shape supporting lid (2), bar shaped supporting base (3), terminal base (4) then can adopt heat-resistant insulation material to declare respectively and become.

Claims

1, a kind of no-induction resistor is by resistive element (1), and insulation supporting device (2,3,4,5,6,7,8,9,10) is right, and metal frame (11) is formed, and it is characterized in that:

(1) resistive element (1) is a continuous plane wave shape wave section resistance;

(2) insulation supporting device (2,3,4,5,6,7,8,9,10) is by bar shaped supporting lid (2), bar shaped supporting base (3), and terminal base (4) is right, pressing plate (5), screw (6), packing ring (7), nut (8), the screw rod (9) of the band hexagon body of rod, locking plate (10) is formed;

(3) the peak and valley end of the crest of resistive element (1) and trough, install respectively and be distributed in the right outside of insulation supporting device (2,3,4,5,6,7,8,9,10), the straight line portion between its crest of face and the trough is then installed and is distributed in the right inboard of insulation supporting device (2,3,4,5,6,7,8,9,10).

2, no-induction resistor as claimed in claim 1 is characterized in that: the crest and the trough of resistive element (1) are wide except that the peak and valley end parts, and its width is greater than electric insulation distance and creepage distance between continuous part adjacent one another are.

3, no-induction resistor as claimed in claim 1 is characterized in that:

(1) is shaped on the slotted eye that vertically distributes along it respectively at the two ends of bar shaped supporting lid (2).

(2) on bar shaped supporting base (3), laterally be shaped on three roads and the draw-in groove that is parallel to each other more than three roads along it respectively, the crest (or trough) of spacer between its draw-in groove and resistive element (1) is with wide, along bar shaped supporting base (3) vertically, be shaped on the hexagon through hole, isolate between the inner surface in its hole and the bottom surface of draw-in groove, and keep its enough electric insulation distance.

(3) it is vertical but non-intersect mutually to be shaped on two orthogonal screws and hexagon through hole respectively on terminal base (4), isolates between the inner surface of the inner surface of this screw and hexagon through hole, and keeps its enough electric insulation distance.

4, as claim 1,3 described no-induction resistors, it is characterized in that: each crest of resistive element (1) and the straightway of trough part are installed on respectively in each right draw-in groove of bar shaped supporting base (3), its resistance output is then by pressing plate (5), screw (6) be fixed on bar shaped supporting base (3) to one of on the right screw of the terminal base (4) at two ends, its bar shaped supporting lid (2) is separately fixed at by packing ring (7), screw (6) on the terminal base (4) at bar shaped supporting base (3) two ends then by the slotted eye on it.

5, as claim 1,3 described no-induction resistors, it is characterized in that: bar shaped supporting base (3) and terminal base (4) constitute the bar shaped supporting base (3,4) of band edge stroma (4) to can be made into one.

6, no-induction resistor as claimed in claim 1 is characterized in that:

(1) bar shaped supporting base (3) and terminal base (4) be to being the circumferential location of screw rod (9) by its coaxial hexagon through hole and the band hexagon body of rod, and adjust with axial location by packing ring (7), the nut (6) at this screw rod (9) two ends;

(2) screw rod (9) of the band hexagon body of rod is that locking plate (10) matches on the thread segment of the band locking groove by its end, is clamped by nut (6), and locking plate (10) is locked in metal frame (11) and goes up circumferential location.

7, no-induction resistor as claimed in claim 1.It is characterized in that:

(1) resistive element (1) adopts the coiling of Aludirome band to be shaped.

(2) bar shaped supporting lid (2), bar shaped supporting base (3), terminal base (4) adopts heat-resistant insulation material to make respectively.