CN208570446U - A kind of disconnecting switch - Google Patents

Abstract

The utility model provides a kind of disconnecting switch, belongs to technical field of electric equipment.It solves the problems, such as that electric current is unstable after being also easy to produce electric arc when existing disconnecting switch switching and closing a floodgate.This disconnecting switch, including pedestal, first support insulator and the second support insulator, the first terminal plate and the second terminal plate being separately positioned on the first support insulator and the second support insulator, the left blade and right blade being hinged on the first terminal plate, moving contact is equipped on left blade and right blade, there is gap between two moving contacts, there is static contact on second terminal plate, there are two abutment faces for tool on static contact, spacing between two abutment faces gradually becomes smaller along the bottom of static contact to cephalad direction, when the left blade and right blade close a floodgate, the static contact can be embedded in the gap and two abutment faces are fit and abutted with moving contact respectively.The moving contact and static contact of this disconnecting switch are able to maintain larger area when opening a sluice gate and closing a floodgate while separating or contacting, and are not likely to produce electric arc.

Description

A kind of disconnecting switch

Technical field

The utility model belongs to technical field of electric equipment, is related to a kind of disconnecting switch.

Background technique

Disconnecting switch generally refers to the device for switching for controlling 10KV or more high-tension circuit on-off, due to the letter of its structure It is single, it works relatively stable, is most commonly used one kind in high-voltage switch electric appliance, especially in electric substation and power plant.

Currently, the structure of disconnecting switch in the market is essentially identical, as Chinese patent application (application number: 201720896712) outdoor high-voltage isolating switch disclosed in including pedestal, is separately fixed at first post insulator at pedestal both ends Son and the second support insulator, the inlet wire plate for being separately fixed at the first support insulator and the second support insulator upper end and outlet Plate, disconnecting link, one end of disconnecting link and outlet board are hinged, the movable contact of other end setting and the cooperation of inlet wire plate.

Although the disconnecting switch can realize company's through and off between inlet wire plate and outlet board by swinging folding disconnecting link It opens, however the two sides of inlet wire plate and movable contact cooperation are two perpendiculars being parallel to each other, two movable contacts are matched with inlet wire plate The end face of conjunction is also the perpendicular being parallel to each other, in this way, disconnecting switch through long-time service after, the spacing meeting of two movable contacts Increase, make to be not easy to contact between movable contact and inlet wire plate, easily leads to electric conductivity reduction, keep the electric current on route unstable.Moreover, Existing disconnecting switch is no arc-suppression function, can not only have load electric in route after other equipment in advance disconnect route It carried out point in the case where stream operation, close processing of circuit.However, when disconnecting switch opens and closes the circuit connecting with equipment such as transformers When, although entire circuit first disconnects, can still there be no-load current between disconnecting switch and transformer, at this time disconnecting switch When switching, in the moment that movable contact is separated or contacted with inlet wire plate, the contact area of the two is minimum, almost line contact or point Contact, is also easy to produce electric arc, so that movable contact be made to damage, leads to poor contact between movable contact and inlet wire plate, the electric current on route It is unstable.

Summary of the invention

The purpose of this utility model is the presence of the above problem in view of the prior art, proposes a kind of disconnecting switch, this reality The technical problem to be solved is that the generation of electric arc and electric currents on route when improving energization when how to reduce switching with novel Stability.

The purpose of this utility model can be realized by the following technical scheme:

A kind of disconnecting switch, including pedestal, the first support insulator and the second post insulator that are arranged at intervals on pedestal Son, the first terminal plate being separately positioned on the first support insulator and the second support insulator and the second terminal plate are hinged on Left blade and right blade on first terminal plate, the left blade one end and right blade far from terminal plate are far from the first terminal plate One end be equipped with moving contact, there is gap between two moving contacts, there is static contact on second terminal plate, it is described quiet Tool is there are two abutment face on contact, the spacing between the two abutment face relative tilts and two abutment faces along the bottom of static contact to Cephalad direction gradually becomes smaller, when the left blade and right blade close a floodgate, the static contact can be embedded in the gap and two against Face is fit and abutted with moving contact respectively.

First terminal plate and the second terminal plate of this disconnecting switch with circuit connection, make opening for left blade and right blade respectively Close a floodgate can control the disconnection of entire circuit be connected to.Two abutment faces of static contact are obliquely installed, and make the head point bottom of static contact Portion is wide, in this way, static contact is partially submerged into behind the gap between two moving contacts and can not still contact with moving contact when closing a floodgate, when Two moving contacts be further continued for towards static contact it is mobile after, the direct entire surface of moving contact fits with abutment face simultaneously, make moving contact with it is quiet The contact area of contact is larger, reduces and generates point discharge phenomenon because contact area is too small between the two；Similarly, it opens a sluice gate When, it is also that entire surface separates simultaneously between static contact and moving contact, equally reduces the generation of electric arc.Due to the reduction of electric arc, Moving contact is set to be not easy to be destroyed, the connection between moving contact and static contact is more stable, and the electric current on circuit is also more stable.Moreover, Since the width of static contact is gradually increased along head to bottom, even if spacing increases between moving contact, need to will only be moved when closing a floodgate Contact continues to press down, that is, can guarantee and keep fitting and abutting between moving contact and static contact, make between moving contact and static contact Electric conductivity keeps stablizing.

In above-mentioned disconnecting switch, all had on two moving contacts for abutment face against abutment face, two patch By face relative tilt and above-mentioned gap is formed, the corner dimension one between angle and two abutment faces between two abutment faces It causes, and the biggish side of the clearance opening and static contact face.In this way, static contact be partially submerged into the gap and not with moving contact When contact, the abutment face of moving contact is substantially parallel with abutment face, i.e. spacing base between abutment face and adjacent abutment face everywhere This is equal, and making the charge being distributed in abutment face or abutment face, substantially more uniformly electric arc that is, everywhere is of substantially equal, avoids electricity Lotus concentrations and generate electric arc, keep switching process safer, disconnecting switch is hardly damaged, and the electric current on circuit is more stable.

In above-mentioned disconnecting switch, the angle between two abutment faces is 4~15 °.In the angular range, stationary contact There is certain self-lock ability after between head two moving contacts of insertion, between so that static contact is not fallen out this under the pressure of two moving contacts Gap keeps the electric current in circuit more stable.

In above-mentioned disconnecting switch, the minimum spacing between two abutment faces is greater than between the minimum between two abutment faces Away from the maximum spacing between two abutment faces is less than the maximum spacing between two abutment faces.In this way, can guarantee when closing a floodgate The entire abutment face of moving contact is bonded with the abutment face of static contact simultaneously, and after the two fitting, the size of contact surface keeps permanent Fixed, i.e., the resistance value between static contact and moving contact will not generate variation, to avoid having an impact electric current, keep electric current more steady It is fixed.

In above-mentioned disconnecting switch, the abutment face is in oblong or ellipse, the abutment face and left blade or the right side It is smoothly transitted connection between blade by cambered surface.In this way, the generation of pointed shape is avoided on moving contact, to avoid moving contact The generation of point discharge phenomenon between static contact avoids dynamic touching to reduce the generation of electric arc between moving contact and static contact Head is damaged because of electric arc, keeps the stability of moving contact more preferable, the conductive stability of disconnecting switch is more preferable.

In above-mentioned disconnecting switch, there is articulated section, the left blade and right blade difference on first terminal plate By the first bolted splice in being also arranged with the first spring, first spring position on the two sides of articulated section, first bolt In the outside of left blade or right blade, make left blade and right blade respectively with articulated section against.By the first spring pre-tightening, left knife Piece and right blade can be contacted with articulated section always, keep its conduction more stable.

In above-mentioned disconnecting switch, the lower part of the static contact is additionally provided with for the limit with left blade and right insert abutment Position block.The setting of limited block makes the cooperation of moving contact and static contact in zone of reasonableness, avoids damaging when combined floodgate overexertion.

In above-mentioned disconnecting switch, the left blade or right blade and the hinged one end of the first terminal plate are equipped with limit Plate, the limit plate include interconnecting piece and limiting section, and the interconnecting piece passes through the first bolt and third bolt and left blade or the right side Blade is connected, and the limiting section extends outwardly towards the direction far from moving contact, and the limiting section has far from one end of moving contact For with the first terminal plate against confined planes, the length direction of the confined planes and left blade or right blade forms 70~90 ° Angle.By the setting of limit plate, limit the open angle of left blade and right blade, avoid opening amplitude excessive and and its His component contact.

The grab for connecting static contact, institute are equipped in above-mentioned disconnecting switch, between the left blade and right blade It states grab and is located at the one end of left blade and right blade far from the first terminal plate, the left blade, grab and right blade pass through second Bolt is sequentially connected, and is also arranged with second spring on second bolt, and the second spring is located at left blade or right blade The nut of outside, one end of the second spring and the second bolt is against the other end and left blade or right insert abutment.Grab energy It is enough to be connect when closing a floodgate with static contact, and by the effect of second spring, there is the trend drawn close between left blade and right blade, Pressure when improving combined floodgate between static contact and moving contact keeps its cooperation closer.

In above-mentioned disconnecting switch, between the left blade and right blade be equipped with connecting rod, the connecting rod respectively with Left blade and right blade are connected.Left blade and right blade are solidly fixed, and stablize the spacing between moving contact constant.

Compared with prior art, the utility model has the advantage that

1, the static contact of the utility model uses the wedge structure of top thin bottom part thickness, when closing a floodgate or opening a sluice gate, static contact The abutment face of abutment face and moving contact can entire surface recline or separate simultaneously, both avoid and to be generated because contact area is too small Electric arc is hardly damaged moving contact；When combined floodgate, large contact area, and contact surface are able to maintain between moving contact and static contact Product size is held essentially constant, and keeps the resistance variations between moving contact and static contact smaller, the electric current to circulate in circuit is more stable.

2, the abutment face of moving contact is smoothly transitted by cambered surface and is connect with left blade or right blade, avoids being formed on moving contact Tip, so that point discharge phenomenon is avoided, the generation of electric arc when reducing switching.

3, left blade and right blade are pre-tightened by the first spring and second spring, make the first terminal plate and second after closing a floodgate It is connected between terminal plate more stable.

4, the angle between two abutment face of static contact is smaller, has certain self-locking energy after cooperating moving contact and static contact Power, static contact connect closer with moving contact.

5, the setting of limited block and limit plate makes the limitation of the folding angle of left blade and right blade in the reasonable scope, keeps away Exempt to damage or contact with other objects because folding amplitude is excessive.

Detailed description of the invention

Fig. 1 is the perspective view of the utility model；

Fig. 2 is structural schematic diagram when disconnecting switch is closed a floodgate；

Fig. 3 is structural schematic diagram when moving contact is not contacted with static contact；

Fig. 4 is structural schematic diagram when moving contact is just contacted with static contact；

Fig. 5 is the structural schematic diagram of moving contact and static contact after closing a floodgate；

Fig. 6 is the structural schematic diagram of movable contact spring；

Fig. 7 is the structural schematic diagram of limit plate；

Fig. 8 is the top view of left blade and right blade.

In figure, 1, pedestal；21, the first support insulator；22, the second support insulator 3, the first terminal plate；31, hinged Portion；4, the second terminal plate；41, static contact；411, abutment face；42, limited block；5, disconnecting link；51, left blade；52, right blade；53, Grab；54, the first bolt；55, the first spring；56, the second bolt；57, second spring；58, third bolt；6, moving contact；61, Abutment face；7, gap；8, limit plate；81, interconnecting piece；82, limiting section；821, confined planes；9, connecting rod.

Specific embodiment

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

A kind of disconnecting switch, including pedestal 1, the first support insulator 21, the second support insulator 22, the first terminal plate 3, Second terminal plate 4, disconnecting link 5, the first pillar become attached to son and the second support insulator 22 be vertically arranged at 1 upper surface of pedestal respectively Both ends, the first terminal plate 3 and the second terminal plate 4 are fixedly arranged on the upper of the first support insulator 21 and the second support insulator 22 respectively End, one end of disconnecting link 5 and the first terminal plate 3 are hinged, and by swinging disconnecting link 5, the other end of disconnecting link 5 can be with the second terminal plate 4 It connects or separates, realizes the on-off of circuit between the first terminal plate 3 and the second terminal plate 4.

As shown in Figure 1, Figure 2, Figure 3 shows, there is the articulated section 31 being vertically arranged on the first terminal plate 3, articulated section 31 is plate-like, Disconnecting link 5 includes that the left blade 51 and right blade 52 of mirror settings, left blade 51 and right blade 52 are cut with scissors respectively by the first bolt 54 The two sides of articulated section 31 are connected to, the first spring 55 is arranged on the first bolt 54, the first spring 55 is located at left blade 51 or right knife The outside of piece 52, and one end of the first spring 55 and left blade 51 or right blade 52 against, the other end and nut against making left knife Piece 51 and right blade 52 and articulated section 31 are always against to guarantee the conductive stability between disconnecting link 5 and the first terminal plate 3.

There is the static contact 41 being vertically arranged, there are two be located at static contact to tool on static contact 41 on second terminal plate 4 The abutment face 411 of 41 two sides, the spacing between two abutment faces, 411 relative tilt and two abutment faces 411 is along the bottom of static contact 41 It is gradually become smaller to cephalad direction, it is preferred that the angle between two abutment faces 411 is 4~15 °.Left blade 51 and right blade 52 are remote It is respectively equipped with moving contact 6 from 3 one end of the first terminal plate, two moving contacts 6 are located at the inside of left blade 51 and right blade 52, Each moving contact 6 end face opposite with another moving contact 6 is abutment face 61, and two 61 relative tilts of abutment face are simultaneously formed along knife The gap 7 being gradually increased above lock 5 to lower opening, between the angle and two abutment faces 411 between two abutment faces 61 Corner dimension is consistent.Preferably, the minimum spacing between two abutment faces 61 is slightly larger than the minimum spacing between two abutment faces 411, And the two maximum spacing between abutment face 61 is less than the maximum spacing between two abutment faces 411.

In this way, in 5 closing course of disconnecting link, although as shown in figure 3, static contact 41 partially protrudes between two moving contacts 6 Gap 7, however two abutment faces 411 of static contact 41 are substantially parallel without contacting with adjacent abutment face 61 respectively, make abutment face 411 or abutment face 61 on be substantially at isopiestic state everywhere, electronics will not generate point discharge phenomenon because excessively concentrating；Such as Shown in Fig. 4, when disconnecting link 5 is further continued for mobile to static contact 41, two abutment faces 61 are fit and abutted with two abutment faces 411 simultaneously, are made quiet Contact 41 and moving contact 6 have biggish contact area when contacting always, and the resistance value between static contact 41 and moving contact 6 is smaller And keep relatively becoming substantially, i.e., it is that there is good electric conductivity after static contact 41 and the contact of moving contact 6 one, current flowing is more stable； As shown in figure 5, disconnecting link 5 is further continued for the movement of the bottom of static contact 41, due to moving contact 6 after static contact 41 and moving contact 6 contact Spacing between two abutment face 411 of bottom is bigger, makes have bigger pressure between static contact 41 and moving contact 6, makes static contact Cooperate closer between 41 and moving contact 6, connective stability is more preferable.

As shown in Fig. 2, Fig. 6, the left blade 51 relatively connected to it of moving contact 6 or right blade 52 are outwardly protruded, and are reclined Face 61 is in oblong, naturally it is also possible to be ellipse, abutment face 61 passes through cambered surface light with the left blade 51 or right blade 52 being connected It slips over and crosses, to avoid the generation of 6 upper prong shape of moving contact, make to be not likely to produce tip between moving contact 6 and static contact 41 and put Electrical phenomena.

Grab 53 is additionally provided between left blade 51 and right blade 52, grab 53 is located at left blade 51 and right blade 52 far from hinge One end of socket part 31, in this way, grab 53 can engage with the card slot on static contact 41, when closing a floodgate to guarantee disconnecting link 5 and static contact Connective stability between 41.Second bolt 56 sequentially passes through left blade 51, grab 53 and right blade 52 and three is connected to one It rising, and is also arranged with second spring 57 on the second bolt 56, second spring 57 is located at the outside of left blade 51 or right blade 52, the One end of two springs 57 and left blade 51 or right blade 52 against, the other end and nut against, when making to close a floodgate, static contact 41 and dynamic There is certain pressure between contact 6.It of courses, as shown in figure 8, left blade 51 and right blade 52 are in addition to adopting a split structure Outside can also be using connected integral structure, left blade 51 and right blade 52 pass through connection far from one end of the first terminal plate 3 Bar 9, which welds, to be directly connected, and left blade 51 and right blade 52 is made to form an entirety, i.e., between left blade 51 and right blade 52 away from From keeping constant, when combined floodgate, between static contact 41 and two moving contacts 6 by interference fit fit closely against.

Further, as shown in Figure 1, Figure 7 shows, limited block 42 is also welded on static contact 41, limited block 42 is located at static contact 41 lower part simultaneously towards the two sides of static contact 41 extend, when keeping 5 combined floodgate amplitude of disconnecting link excessive, limited block 42 can respectively with left blade 51 and right blade 52 lower end surface against.Disconnecting link 5 and the hinged one end of the first terminal plate 3 are equipped with the limit plate 8 of plate, limit plate 8 include the interconnecting piece 81 and limiting section 82 of integrally connected, is spaced apart on interconnecting piece 81 there are two mounting hole, two mounting holes are distinguished Be connected by the first bolt 54 and third bolt 58 and left blade 51 or right blade 52, and interconnecting piece 81 be located at the first spring 55 with Between left blade 51 or right blade 52, limiting section 82 extends outwardly along the direction far from moving contact 6, and limiting section 82 is far from dynamic touching First 6 one end, which has, forms 70~90 ° between confined planes 821, confined planes 821 and left blade 51 or the length direction of right blade 52 Angle, after the angle for opening disconnecting link 5 reaches the angle, confined planes 821 can be fit and abutted with the first terminal plate 3, to limit Disconnecting link 5 continues to open, and avoids disconnecting link 5 from contacting with other objects and causes accident.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Although pedestal 1, the first support insulator 21, the second support insulator 22, the first wiring is used more herein Plate 3, articulated section 31, the second terminal plate 4, static contact 41, abutment face 411, limited block 42, grab 53, moving contact 6, abutment face 61, The terms such as limit plate 8, but it does not exclude the possibility of using other terms.The use of these items is only for more easily retouch State and explain the essence of the utility model；Being construed as any additional limitation all is and the spirit of the present invention phase It violates.

Claims (10)

1. a kind of disconnecting switch, including pedestal (1), the first support insulator (21) and second being arranged at intervals on pedestal (1) Support insulator (22), the first terminal plate being separately positioned on the first support insulator (21) and the second support insulator (22) (3) and the second terminal plate (4), the left blade (51) and right blade (52) that are hinged on the first terminal plate (3), the left blade (51) one end far from the first terminal plate (3) and one end of right blade (52) separate first terminal plate (3) are equipped with moving contact (6), there are gap (7) between two moving contacts (6), there are static contact (41) on second terminal plate (4), the stationary contact There are two abutment face (411) for tool on head (41), which is characterized in that two abutment face (411) relative tilts and two abutment faces (411) spacing between gradually becomes smaller along the bottom of static contact (41) to cephalad direction, the left blade (51) and right blade (52) when closing a floodgate, the static contact (41) can be embedded in the gap (7) and two abutment faces (411) are pasted with moving contact (6) respectively Close against.

2. disconnecting switch according to claim 1, which is characterized in that all had on two moving contacts (6) and be used for and support By face (411) against abutment face (61), two abutment faces (61) relative tilt simultaneously formed above-mentioned gap (7), two abutment faces (61) angle between is consistent with the corner dimension between two abutment faces (411), and the gap (7) be open biggish side with Static contact (41) face.

3. disconnecting switch according to claim 1 or 2, which is characterized in that the angle between two abutment faces (411) is 4~15 °.

4. disconnecting switch according to claim 2, which is characterized in that the minimum spacing between two abutment faces (61) is big Minimum spacing between two abutment faces (411), the maximum spacing between two abutment faces (61) is less than two abutment faces (411) Between maximum spacing.

5. disconnecting switch according to claim 4, which is characterized in that the abutment face (61) be in oblong or ellipse, The abutment face (61) connect with being smoothly transitted between left blade (51) or right blade (52) by cambered surface.

6. disconnecting switch according to claim 5, which is characterized in that have articulated section on first terminal plate (3) (31), the left blade (51) and right blade (52) are articulated with the two sides of articulated section (31), institute by the first bolt (54) respectively It states and is also arranged on the first bolt (54) the first spring (55), first spring (55) is located at left blade (51) or right blade (52) outside, make left blade (51) and right blade (52) respectively with articulated section (31) against.

7. disconnecting switch according to claim 6, which is characterized in that the lower part of the static contact (41) be additionally provided with for and Left blade (51) and right blade (52) against limited block (42).

8. disconnecting switch according to claim 6 or 7, which is characterized in that the left blade (51) or right blade (52) with The hinged one end of first terminal plate (3) is equipped with limit plate (8), and the limit plate (8) includes interconnecting piece (81) and limiting section (82), The interconnecting piece (81) is connected by the first bolt (54) and third bolt (58) and left blade (51) or right blade (52), described Limiting section (82) extends outwardly towards the direction far from moving contact (6), and the limiting section (82) has far from the one end of moving contact (6) For with the first terminal plate (3) against confined planes (821), the confined planes (821) and left blade (51) or right blade (52) Length direction form 70~90 ° of angle.

9. disconnecting switch according to claim 8, which is characterized in that set between the left blade (51) and right blade (52) There is the grab (53) for connecting static contact (41), the grab (53) is located at left blade (51) and right blade (52) far from first One end of terminal plate (3), the left blade (51), grab (53) and right blade (52) are sequentially connected by the second bolt (56), It is also arranged with second spring (57) on second bolt (56), the second spring (57) is located at left blade (51) or right blade (52) outside, one end of the second spring (57) and the nut of the second bolt (56) are against the other end and left blade (51) Or right blade (52) against.

10. disconnecting switch according to claim 6, which is characterized in that between the left blade (51) and right blade (52) Equipped with connecting rod (9), the connecting rod (9) is connected with left blade (51) and right blade (52) respectively.