CN206819824U - A kind of overvoltage protection device - Google Patents
A kind of overvoltage protection device Download PDFInfo
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- CN206819824U CN206819824U CN201720738046.2U CN201720738046U CN206819824U CN 206819824 U CN206819824 U CN 206819824U CN 201720738046 U CN201720738046 U CN 201720738046U CN 206819824 U CN206819824 U CN 206819824U
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- housing
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Abstract
The utility model discloses a kind of overvoltage protection device, and it includes contact, locating ring, body, housing, conducting rod, core body and explosion-protection equipment；The contact matching is connected to the top of body, and conducting rod and the core body matching is coaxially socketed in the centre bore of body；The both ends of conducting rod match with the bottom of contact and the top of core body respectively to be contacted；The top of the explosion-protection equipment matches with the bottom of core body to be contacted；The locating ring Matching installation is in the top of conducting rod；Housing matching is socketed on the outer wall of both body and explosion-protection equipment, and the housing includes upper housing and lower housing, and the top of the bottom of the upper housing and lower housing matches splicing.The utility model uses spliced housing, has both reduced the machining accuracy of housing, so as to reduce assembly difficulty, reduces production cost again, economical and practical.
Description
Technical field
The utility model belongs to protection appliance field, more particularly to a kind of overvoltage protection device.
Background technology
It is too high too low that all electrical equipment most avoids line voltage when in use, no matter industrial equipment or household electrical appliance have one
Individual rated voltage, as household electrical appliance voltage range is generally specified as 170V-240V (can be in the nameplate or specification of electric equipment
On see).Beyond the dielectric strength and pressure voltage of electrical equipment, electrical equipment can therefore generate heat, puncture if beyond this voltage and
Burn out even on fire.At present because zero line is stolen, ageing equipment, technical failure, man-made fault, natural calamity, has a power failure and sends a telegram here again
The situation for causing a large amount of electrical equipment in big section to be burned, burning too low etc. voltage instability, overtension caused by reason constantly occurs,
People suffer heavy losses, and have no way to claim, and the thing to exhaust the people and drain the treasury comes one after another, and should add beneficial people's superpressure, overvoltage, pressure-failure protector (again
Name Protector for electric appliance), to prevent electrical fire, protect the security of the lives and property.
Overvoltage protection device is a kind of advanced protection electrical equipment for limiting lightning surge and switching overvoltage.It is mainly used
In protecting the insulation of the electrical equipments such as generator, transformer, switch, bus, motor from the infringement of overvoltage.Equivalent to wave
The high pressure form of surge protector.Belong to a kind of arrester part substitute, it functions as arrester, but is kept away with traditional
Thunder device is different.
1：Common arrester can only be phase protect (single phasing protection, every group with three), you can with phase protecting can also
Alternate protection (three-phase).
2：Overvoltage protection device is typically mounted in cabinet, and both may be mounted at can also in cabinet for traditional arrester
Outside the enclosure (outside casing is essentially all arrester) is installed.
Wherein, the overvoltage protection device of outdoor type is combined arrester.
In addition, overvoltage protection device is structurally characterized in that 1. contour structures are compact, insulation is high pressure resistant, greatly utilizes and contracts
Subtract and used space；2. composite sheath integral die, have it is good seal, be explosion-proof, humidity resistance, anti-leakage trace, anti-galvanic corrosion are resistance to
Dirt, hydrophobicity are good；3. structure novel and unique, technical performance is excellent, and electrical insulation properties are good；4. high-tension cable wiring, ensure exhausted
Edge intensity, it is flexible for installation；5. small volume, in light weight, save and take up an area, be particularly suitable for installing in switch cubicle.
Wherein, the housing that universal overvoltage protection device uses is made of metal material, and electrification in high voltage part relies on
Silicon rubber insulation is isolated, by installing space limit protector size must design the small scope of trying one's best, the high pressure of protector
The Electric Field Distribution at end is just and uneven, therefore can produce shelf depreciation, and big shelf depreciation can constantly destroy dielectric strength, finally
Lead to protector damage accident.Also, not only wall is thin but also entire length is long for universal housing, it is necessary to which higher processing is smart
Degree, improves difficulty of processing and production cost.
Utility model content
(1) technical problems to be solved
The technical problems to be solved in the utility model is to provide a kind of overvoltage protection device of the spliced housing of band, is used for
The machining accuracy of housing is reduced, reduces production cost, economic benefit.
(2) technical scheme
In order to solve the above technical problems, the utility model provides a kind of overvoltage protection device, it include contact, locating ring,
Body, housing, conducting rod, core body and explosion-protection equipment；Contact matches the top for being connected to body, and conducting rod and core body matching are same
Axle sleeve is connected in the centre bore of body；The both ends of conducting rod match with the bottom of contact and the top of core body respectively to be contacted；It is anti-
The top of quick-fried device matches with the bottom of core body to be contacted；Locating ring Matching installation is in the top of conducting rod；Housing matching set
It is connected on the outer wall of both body and explosion-protection equipment, the housing includes upper housing and lower housing, the bottom of housing on this
End and the top of lower housing match splicing.
Wherein, the bottom of upper housing is provided with interior stepped hole, and the top of lower housing, which is provided with, co-axial integrally to be connected
Connect and the splicing ring for the socket that matches with interior stepped hole；The top of the bottom of upper housing and lower housing by interior stepped hole with
Splicing ring match set fetch realization splicing.
Wherein, splice and co-axial annular groove is provided with the outer wall of ring, O-ring seal, the O are provided with the annular groove
Type sealing ring is connected between the outer wall of splicing ring and the inner hole wall of interior stepped hole.
Wherein, upper housing and lower housing are made up of cast aluminum alloy material.
Wherein, the top of upper housing is provided with the ring flange of co-axial integrally connected, is provided with the ring flange solid
Determine connecting hole and ground hole；Fixedly connected hole shares three, and three fixedly connected holes are in as axle center using the axial line of ring flange
Circular array is uniformly distributed；Ground hole is symmetrical with one of fixedly connected hole on ring flange, is matched on the ground hole
Connect an earth stud.
Wherein, explosion-protection equipment includes flange, explosion-proof body, addendum cone, spring, spring base and burst disk；The centre of explosion-proof body is set
A counterbore that is co-axial and penetrating is equipped with, spring base and burst disk matching are socketed in the macropore of counterbore, the burst disk
Top surface matches to be adjacent to the bottom surface of spring base to be contacted；Flange is fixed on by screw on the top end face of explosion-proof body；The bottom of spring
Holding Matching installation, the bottom Matching installation of addendum cone is in the top of spring, spring of the addendum cone in spring on the top surface of spring base
Its top matches with the bottom of core body through flange and contacted under active force.
Wherein, first sealing ring is provided with the step surface of counterbore, first sealing ring is located at the bottom surface of burst disk
And between the step surface of counterbore；The lateral surface of explosion-proof body is provided with second sealing ring, and second sealing ring is located at housing
Inner hole wall and explosion-proof body lateral surface between.
Wherein, the lower surface of housing flushes with the lower surface of explosion-protection equipment, the upper surface of the housing and core body it is upper
End face.
Wherein, core body includes upper contact head, resistor disc post, lower contact and radome；Resistor disc post is Zinc-oxide piezoresistor
The single-column structure that piece is composed in series；Upper contact head matches the upper end for being connected to resistor disc post, and lower contact matching is connected to resistor disc post
Lower end；Radome matching is fixedly sleeved in the outside of upper contact head, resistor disc post and lower contact three.
Wherein, body is made up of silastic material.
(3) beneficial effect
Compared with prior art, housing of the present utility model uses the structure type of split splicing, not only reduces screen
The machining accuracy of set is covered, reduces assembly difficulty, and reduces production cost, it is economical and practical；Upper housing and lower shielding
Stitching portion between set uses the structure of clamping, and the housing thickness of stitching portion superposition is also close to required thickness so that spells
The shielding properties at the place of connecing can also reach actual demand；And the stitching portion between upper housing and lower housing set up it is O-shaped
Sealing ring, the effect of dustproof and waterproof can be played, dust or liquid is effectively avoided to enter the stitching portion of housing and cause to shield
The shielding properties of set reduces, and causes the service life of overvoltage protection device to reduce so as to avoid the reduction of shielding properties；Wherein,
The explosion-protection equipment of setting, it can both ensure good square wave through-current capability and stability, again can be quick-fried in this overvoltage protection device
Cushioning effect is played when fried, so as to avoid exploding or reduce or remit brisance；And the first sealing set in the bottom of explosion-protection equipment
Circle and the second sealing ring so that the overall sealing performance of this overvoltage protection device is good, keeps away from moisture or air enters, effectively drop
The possibility of low blast.
Brief description of the drawings
Fig. 1 is the structural representation sectional view of the utility model overvoltage protection device.
Fig. 2 is the mechanism schematic front view of the utility model overvoltage protection device.
Fig. 3 is housing and the partial sectional view of lower housing phase stitching portion on the utility model.
Fig. 4 is the structural representation sectional view of B-B in the utility model Fig. 2.
Fig. 5 is the structural representation sectional view of the utility model explosion-protection equipment.
Description of reference numerals：1st, contact；2nd, locating ring；3rd, body；4th, housing；5th, conducting rod；6th, core body；7th, explosion-proof dress
Put；41st, upper housing；42nd, lower housing；43rd, O-ring seal；61st, upper contact head；62nd, resistor disc post；63rd, lower contact；64th, shield
Cover cover；71st, flange；72nd, explosion-proof body；73rd, addendum cone；74th, spring；75th, spring base；76th, burst disk；77th, screw；411st, interior step
Hole；412nd, ring flange；413rd, fixedly connected hole；414th, ground hole；415th, earth stud；421st, ring is spliced；422nd, annular groove；
721st, counterbore；722nd, the first sealing ring；723rd, the second sealing ring.
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but can not be used for limiting the scope of the utility model.
Fig. 1 is the structural representation sectional view of the utility model overvoltage protection device, embody this overvoltage protection device be by
What contact 1, locating ring 2, body 3, housing 4, conducting rod 5, core body 6 and explosion-protection equipment 7 formed, and its connection between them
Relation, and reflect housing 4 emphatically and be made up of upper housing 41 and lower housing 43；Fig. 2 is the utility model mistake
The mechanism schematic front view of voltage protector, embody the flange of the co-axial integrally connected of the top setting of housing 41
Disk 412, and fixedly connected hole 413 and earth stud 415 on ring flange 412；Fig. 3 is housing on the utility model
And the partial sectional view of lower housing phase stitching portion, housing 41 and lower housing 43 both splicing constructions are reflected, with
And the O-ring seal 43 set in upper housing 41 and both stitching portions of lower housing 43；Fig. 4 is B-B in the utility model Fig. 2
Structural representation sectional view, emphasis embodies fixedly connected hole 413 and ground hole 414 on ring flange 412, and its is fixedly connected
The distribution situation of hole 413 and ground hole 414 on ring flange 412；Fig. 5 is the structural representation section view of the utility model explosion-protection equipment
Figure, it is by 76 groups of flange 71, explosion-proof body 72, addendum cone 73, spring 74, spring base 75 and burst disk mainly to reflect explosion-protection equipment 7
Into, and its annexation between them.
As shown in Figures 1 and 2, the overvoltage protection device includes contact 1, determined the structure of the utility model overvoltage protection device
Position ring 2, body 3, housing 4, conducting rod 5, core body 6 and explosion-protection equipment 7；Contact 1 matches the top for being connected to body 3, conductive
Bar 5 and core body 6, which match, to be coaxially socketed in the centre bore of body 3；The both ends of conducting rod 5 bottom with contact 1 and core body 6 respectively
Top match contact；The top of explosion-protection equipment 7 matches with the bottom of core body 6 to be contacted；The Matching installation of locating ring 2 is in conduction
The top of bar 5；Housing 4, which matches, to be socketed on the outer wall of both body 3 and explosion-protection equipment 7, and the housing 4 includes upper housing
41 and lower housing 42, bottom of housing 41 and the top of lower housing 42 match splicing on this.The utility model uses
Said structure, housing therein use the structure type of split splicing, not only reduce the machining accuracy of housing, reduce
Assembly difficulty, and production cost is reduced, it is economical and practical.
As shown in figure 3, in the present embodiment, the bottom of upper housing 41 is provided with interior stepped hole 411, the top of lower housing 42
End is provided with co-axial integrally connected and the splicing ring 421 for the socket that matches with interior stepped hole 411；The bottom of upper housing 41
Realization splicing is fetched by interior stepped hole 411 and splicing ring 421 set that matches with the top of lower housing 42.It is of the present utility model
Stitching portion between upper housing and lower housing uses the structure of clamping, and the housing thickness of stitching portion superposition also close to
Required thickness so that the shielding properties of stitching portion can also reach actual demand, avoid the shielding properties of stitching portion not up to standard and
The protective value of this overvoltage protection device is reduced, it also avoid the possibility that stitching portion has gap.
As shown in figure 3, in the present embodiment, splice and be provided with co-axial annular groove 422, the ring on the outer wall of ring 421
Be provided with O-ring seal 43 in shape groove 422, the O-ring seal 43 is connected in the interior of the outer wall for splicing ring 421 and interior stepped hole 411
Between hole wall.The O-ring seal that stitching portion of the utility model between upper housing and lower housing is set up, can be played anti-
The effect of dirt waterproof, dust or liquid is effectively avoided to enter the stitching portion of housing and cause the shielding properties of housing to reduce,
The service life of overvoltage protection device is caused to reduce so as to avoid the reduction of shielding properties.
In the present embodiment, upper housing 41 and lower housing 42 are made up of cast aluminum alloy material, both economical and practical, protect again
Demonstrate,prove good shielding properties.
As shown in Figure 1, Figure 2 and shown in Fig. 4, in the present embodiment, the top of upper housing 41 is provided with co-axial integrally connected
Ring flange 412, be provided with fixedly connected hole 413 and ground hole 414 on the ring flange 412；Fixedly connected hole 413 shares three
Individual, three fixedly connected holes 413 are uniformly distributed by the rounded array in axle center of the axial line of ring flange 412；Ground hole 414 exists
It is symmetrical with one of fixedly connected hole 413 on ring flange 412, one earth stud of matching connection on the ground hole 414
415.The utility model uses said structure, make it that the connection of this overvoltage protection device is very steady using the principle of three point one sides
It is fixed, and the earth stud carried make it that the ground connection of this product is very convenient.
As shown in figure 5, in the present embodiment, explosion-protection equipment 7 includes flange 71, explosion-proof body 72, addendum cone 73, spring 74, spring
Seat 75 and burst disk 76；The centre of explosion-proof body 72 is provided with a counterbore 721 that is co-axial and penetrating, spring base 75 and explosion-proof
The matching of piece 76 is socketed in the macropore of counterbore 721, and the top surface of the burst disk 76 matches to be adjacent to the bottom surface of spring base 75 to be contacted；
Flange 71 is fixed on by screw 77 on the top end face of explosion-proof body 72；The bottom Matching installation of spring 74 is in the top surface of spring base 75
On, the bottom Matching installation of addendum cone 73 is worn in the top of spring 74, the addendum cone 73 its top under the acting force of the spring of spring 74
Cross flange 71 and match with the bottom of core body 6 and contact.The utility model uses the explosion-protection equipment of said structure, can both ensure good
Good square wave through-current capability and stability, can play cushioning effect in this overvoltage protection device explosion time again, quick-fried so as to avoid
Fried or deduction and exemption brisance.
As shown in figure 5, in the present embodiment, first sealing ring 722 is provided with the step surface of counterbore 721, this first
Sealing ring 722 is located between the bottom surface of burst disk 76 and the step surface of counterbore 721；The lateral surface of explosion-proof body 72 is provided with one
Two sealing rings 723, second sealing ring 723 are located between the inner hole wall of housing 4 and the lateral surface of explosion-proof body 72.This practicality is new
The first sealing ring and the second sealing ring that type is set in the bottom of explosion-protection equipment so that the overall tightness of this overvoltage protection device
Can be good, keep away from moisture or air enters, effectively reduce the possibility of blast.
As shown in figure 1, in the present embodiment, the lower surface of housing 4 flushes with the lower surface of explosion-protection equipment 7, the housing 4
Upper surface flushed with the upper surface of core body 6 so that the protection of housing is very comprehensive, effectively reduces the possibility of shelf depreciation
Property, improve the service life of this product.In addition, the upper surface of housing 4 can also be higher than the upper surface of core body 6 so that shielding
The protection of set is more complete, and the performance of this product is more stable.
As shown in figure 1, in the present embodiment, core body 6 includes upper contact head 61, resistor disc post 62, lower contact 63 and radome 64；
Resistor disc post 62 is the single-column structure that zinc oxide varistor is composed in series；The matching of upper contact head 61 is connected to resistor disc post 62
Upper end, lower contact 63 match the lower end for being connected to resistor disc post 62；Radome 64 matches fixedly sleeved in upper contact head 61, resistor disc
Post 62 and the outside of the three of lower contact 63.The utility model uses the core body of said structure, can effectively reduce overvoltage protection
The volume and weight of device, installation area occupied is saved, is particularly suitable for installing in switch cubicle.
In the present embodiment, body 3 is made up of silastic material, ensures good to be dielectrically separated from effect.
It these are only preferred embodiment of the present utility model, it is noted that for the ordinary skill people of the art
Member for, on the premise of the utility model technical principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (10)
- A kind of 1. overvoltage protection device, it is characterised in that：The overvoltage protection device includes contact (1), locating ring (2), body (3), housing (4), conducting rod (5), core body (6) and explosion-protection equipment (7)；Contact (1) matching is connected to the top of body (3) End, the conducting rod (5) and core body (6) matching are coaxially socketed in the centre bore of body (3)；The both ends difference of conducting rod (5) Match with the bottom of contact (1) and the top of core body (6) and contact；The top of the explosion-protection equipment (7) and the bottom of core body (6) Match contact；Locating ring (2) Matching installation is in the top of conducting rod (5)；Housing (4) matching is socketed on body (3) and on the outer wall of both explosion-protection equipments (7), the housing (4) includes upper housing (41) and lower housing (42), it is described on The top of the bottom of housing (41) and lower housing (42) matches splicing.
- 2. overvoltage protection device according to claim 1, it is characterised in that：The bottom of the upper housing (41) is provided with Interior stepped hole (411), the top of the lower housing (42) be provided with co-axial integrally connected and with interior stepped hole (411) phase Match the splicing ring (421) of socket；The bottom of upper housing (41) and the top of lower housing (42) pass through interior stepped hole (411) With splicing ring (421) match set fetch realization splicing.
- 3. overvoltage protection device according to claim 2, it is characterised in that：Set on the outer wall of the splicing ring (421) There is co-axial annular groove (422), O-ring seal (43), the O-ring seal (43) are provided with the annular groove (422) It is connected between the outer wall of splicing ring (421) and the inner hole wall of interior stepped hole (411).
- 4. overvoltage protection device according to claim 2, it is characterised in that：The upper housing (41) and lower housing (42) it is made up of cast aluminum alloy material.
- 5. overvoltage protection device according to claim 1, it is characterised in that：The top of the upper housing (41) is provided with The ring flange (412) of co-axial integrally connected, fixedly connected hole (413) and ground hole are provided with the ring flange (412) (414)；The fixedly connected hole (413) shares three, and three fixedly connected holes (413) are with the axial line of ring flange (412) It is uniformly distributed for the rounded array in axle center；The ground hole (414) on ring flange (412) with one of fixedly connected hole (413) it is symmetrical, one earth stud (415) of matching connection on the ground hole (414).
- 6. overvoltage protection device according to claim 1, it is characterised in that：The explosion-protection equipment (7) include flange (71), Explosion-proof body (72), addendum cone (73), spring (74), spring base (75) and burst disk (76)；Setting among the explosion-proof body (72) There is a counterbore (721) that is co-axial and penetrating, the spring base (75) and burst disk (76) matching are socketed on counterbore (721) Macropore in, the top surface of the burst disk (76) matches to be adjacent to the bottom surface of spring base (75) to be contacted；The flange (71) passes through Screw (77) is fixed on the top end face of explosion-proof body (72)；The bottom Matching installation of the spring (74) is in the top of spring base (75) On face, the bottom Matching installation of the addendum cone (73) is made in the top of spring (74), the addendum cone (73) in the spring of spring (74) Firmly its lower top matches through flange (71) with the bottom of core body (6) contacts.
- 7. overvoltage protection device according to claim 6, it is characterised in that：Set on the step surface of the counterbore (721) There is first sealing ring (722), first sealing ring (722) is located at the bottom surface of burst disk (76) and the platform of counterbore (721) Between terrace；The lateral surface of the explosion-proof body (72) is provided with second sealing ring (723), second sealing ring (723) Between the inner hole wall of housing (4) and the lateral surface of explosion-proof body (72).
- 8. overvoltage protection device according to claim 1, it is characterised in that：The lower surface of the housing (4) with it is explosion-proof The lower surface of device (7) flushes, and the upper surface of the housing (4) flushes with the upper surface of core body (6).
- 9. overvoltage protection device according to claim 1, it is characterised in that：The core body (6) includes upper contact head (61), electricity Hinder piece post (62), lower contact (63) and radome (64)；The resistor disc post (62) is composed in series for zinc oxide varistor Single-column structure；Upper contact head (61) matching is connected to the upper end of resistor disc post (62), lower contact (63) the matching connection In the lower end of resistor disc post (62)；The radome (64) matching it is fixedly sleeved upper contact head (61), resistor disc post (62) and under The outside of contact (63) three.
- 10. overvoltage protection device according to claim 1, it is characterised in that：The body (3) is by silastic material system Into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720738046.2U CN206819824U (en) | 2017-06-23 | 2017-06-23 | A kind of overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720738046.2U CN206819824U (en) | 2017-06-23 | 2017-06-23 | A kind of overvoltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206819824U true CN206819824U (en) | 2017-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720738046.2U Active CN206819824U (en) | 2017-06-23 | 2017-06-23 | A kind of overvoltage protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN206819824U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146669A (en) * | 2017-06-23 | 2017-09-08 | 宁波市镇海国创高压电器有限公司 | A kind of overvoltage protection device |
-
2017
- 2017-06-23 CN CN201720738046.2U patent/CN206819824U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146669A (en) * | 2017-06-23 | 2017-09-08 | 宁波市镇海国创高压电器有限公司 | A kind of overvoltage protection device |
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