CN210742432U - Portable frequency conversion voltage regulation test device - Google Patents
Portable frequency conversion voltage regulation test device Download PDFInfo
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- CN210742432U CN210742432U CN201921389005.2U CN201921389005U CN210742432U CN 210742432 U CN210742432 U CN 210742432U CN 201921389005 U CN201921389005 U CN 201921389005U CN 210742432 U CN210742432 U CN 210742432U
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Abstract
The utility model relates to the technical field of partial discharge filtering, and discloses a portable frequency conversion voltage regulation test device, which comprises a metal shielding shell, wherein the metal shielding shell is connected with a metal shielding side plate, the metal shielding shell is connected with a grounding installation seat, and the grounding installation seat is connected with a filtering circuit board; one of the metal shielding side plates is connected with an insulating connecting ring, a metal conduit is sleeved in the insulating connecting ring, an input lead is arranged in the metal conduit in a penetrating manner, and the input lead is electrically connected with a metal wiring male head; the other metal shielding side plate is connected with a metal wiring female head, the metal wiring female head is matched with the metal wiring male head, and the metal wiring female head is electrically connected with an output lead; the insulating connecting ring is tightly propped between the metal wiring female head and the metal wiring male head, a compact metal net is arranged in the insulating connecting ring, and the insulating connecting ring is electrically connected with the metal wiring female head and the metal wiring male head; a plurality of portable frequency conversion voltage regulation test device realize establishing ties, and bigger promotion shielding effect promotes its interference killing feature.
Description
Technical Field
The utility model relates to a filtering technology field is put in the office, and more specifically says, it relates to a portable frequency conversion pressure regulating test device.
Background
PD filtering is also called partial discharge filtering, i.e. partial discharge, in which a discharge occurs only in a local region of an insulator, but not between conductors through which a voltage is applied, and may occur in the vicinity of the conductors or elsewhere, and this phenomenon is called partial discharge. The partial discharge phenomenon mainly refers to high-voltage electrical equipment.
Such discharges are limited to causing only isolated local shorts between conductors without forming conductive paths. Each time, the local discharge has some influence on an insulating medium, the slight local discharge has small influence on the insulation of the power equipment, and the reduction of the insulation strength is slow; and strong partial discharge causes a rapid decrease in the dielectric strength. This is an important factor in causing insulation damage of high-voltage electric power equipment. Therefore, when designing the insulation of high-voltage power equipment, it is considered that relatively strong partial discharge is not allowed to occur in the insulation structure under the action of the long-term operating voltage. The monitoring of the equipment in operation needs to be strengthened, and when the partial discharge exceeds a certain degree, the equipment is required to be withdrawn from operation for maintenance or replacement.
When the product insulation is detected by using the partial discharge means, because the discharge process is only in insulating partial short circuit and the time is short, if the detection instrument is interfered by the outside, the data which is accurate and can represent the actual working condition can not be obtained, and the external interference comprises the interference of an external electromagnetic field on electronic components inside the detection instrument and the interference on leads around the shell of the detection instrument.
SUMMERY OF THE UTILITY MODEL
Can't acquire the technical problem of accurate and can represent operating condition's data after receiving external interference to current detecting instrument, the utility model provides a portable frequency conversion voltage regulation test device, it has the strong advantage of interference killing feature.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a portable frequency conversion voltage regulation test device comprises a metal shielding shell, wherein two opposite end parts of the metal shielding shell are fixedly connected with metal shielding side plates, a grounding mounting seat is fixedly connected inside the metal shielding shell, and the grounding mounting seat is detachably connected with a filter circuit board;
an insulating connecting ring is fixedly connected to one of the metal shielding side plates, a metal conduit electrically connected with the metal shielding side plate is tightly sleeved in the insulating connecting ring, an input lead electrically connected with the filter circuit board penetrates through the metal conduit, and one end, far away from the filter circuit board, of the input lead is electrically connected with a metal wiring male head;
a metal wiring female head is fixedly connected to the other metal shielding side plate, the metal wiring female head is matched with the metal wiring male head, and the metal wiring female head is electrically connected with an output lead electrically connected with the filter circuit board;
the insulating connecting ring is tightly abutted between the metal wiring female head and the metal wiring male head, and a compact metal net is arranged in the insulating connecting ring and electrically connected with the metal wiring female head and the metal wiring male head.
Through above-mentioned technical scheme, insulating go-between supports tightly between female head of metal wiring and the public head of metal wiring, lets both inseparabler and realize the electricity connection with connecting, and the metal pipe is connected with the metal shielding curb plate electricity and is realized shielding and shielding scope expansion, and the female head of metal wiring cooperatees with the public head of metal wiring, can let a plurality of portable frequency conversion voltage regulation test devices realize establishing ties, and bigger promotion shielding effect promotes its interference killing feature.
Furthermore, the outer wall of the metal wiring male head is fixedly connected with a fastening terminal, the metal wiring female head comprises an outer connecting ring, the metal wiring male head is inserted into the outer connecting ring and is electrically connected with the metal wiring female head, a fastening groove for the fastening terminal to be fastened is formed in the outer connecting ring, a positioning groove for fixing the fastening terminal is formed in the fastening groove, the opening direction of the positioning groove is far away from the moving direction of the fastening terminal inserted into the metal wiring female head, and a first magnetic part is fixedly connected into the positioning groove.
Through above-mentioned technical scheme, first magnetic part adsorbs on the inner wall of constant head tank, lets the public head of metal wiring and the female head of metal wiring fixed and electricity be connected, realizes the transmission of signal and the shielding of interference.
Furthermore, a second magnetic part is fixedly connected to the fastening terminal, the fastening terminal is located in the positioning groove, the first magnetic part contacts with the second magnetic part, and the polarities of the contact ends of the first magnetic part and the second magnetic part are opposite.
Through above-mentioned technical scheme, first magnetic part adsorbs each other with the second magnetic part, makes the fastening terminal inseparabler at constant head tank in-connection ground connection.
Furthermore, a telescopic groove is formed in the metal wiring male head, an elastic rod is fixedly connected in the telescopic groove, and the fastening terminal is fixedly connected to the elastic rod and tends to move outwards.
Through above-mentioned technical scheme, the elastic rod lets the fastening terminal outwards extend and support the inner wall in tight fastening groove, lets be connected between metal wiring public head and the metal wiring female head inseparabler.
Furthermore, the elastic rod is fixedly connected with the insulating connecting ring, and the connected end part of the elastic rod extends out of the telescopic groove.
Through above-mentioned technical scheme, the elastic rod fixed with insulating go-between can guarantee its elastic action always, can not make the trend that the lock joint terminal does not have the outside motion along with the increase of live time.
Further, the fastening groove does not penetrate through any end portion of the outer connection ring away from the metal shielding shell.
Through the technical scheme, after the fastening terminal is fastened into the telescopic groove, the fastening terminal can abut against the side wall of the fastening groove and cannot be separated from the telescopic groove, and the connecting effect is stable.
Furthermore, an elastic groove is formed in the middle of the elastic rod in a penetrating mode.
Through above-mentioned technical scheme, the elasticity of elastic rod can be increased to the elastic groove, increases the deformation range of elastic rod, lets the home range grow of lock joint terminal.
Furthermore, a wire mesh is fixedly connected in the elastic rod, and the wire mesh is electrically connected with the fastening terminal and the metal wiring male head.
Through above-mentioned technical scheme, lock joint terminal and the public head of metal wiring are connected to the wire mesh electricity, and lock joint terminal is connected with the female first electricity of metal wiring to let more stable ground electricity be connected between public head of metal wiring and the female head of metal wiring.
Compared with the prior art, the beneficial effects of the utility model are that: through independent shielding and safeguard measure on female head of wiring and the public head of wiring, insulating go-between supports tightly between female head of metal wiring and the public head of metal wiring, lets both connection ground inseparabler and electricity connect, and the metal pipe is connected realization shielding and shielding scope with the metal shielding curb plate electricity and is enlarged, and the female head of metal wiring cooperatees with the public head of metal wiring, can let a plurality of portable frequency conversion voltage regulation test devices realize establishing ties, bigger promotion shielding effect, promotes its interference killing feature.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment;
FIG. 2 is a schematic diagram of an embodiment of a structure including a resilient slot;
fig. 3 is a schematic view of the internal structure of the embodiment.
Reference numerals: 1. a metal shielding can; 2. a grounding mounting seat; 3. a filter circuit board; 4. a metal shielding side plate; 5. an insulating connecting ring; 6. a metal conduit; 8. an input lead; 9. a metal wiring male head; 10. a snap-fit terminal; 11. a metal wiring female head; 12. an output lead; 14. a connecting ring; 16. a fastening groove; 17. positioning a groove; 171. a first magnetic member; 172. a second magnetic member; 18. a telescopic groove; 19. an elastic rod; 191. an elastic groove.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Examples
The utility model provides a portable frequency conversion pressure regulating test device, as shown in fig. 1 and 3, including being the metal shield shell 1 of roughly cuboid, the inside welding of metal shield shell 1 has inside convex ground connection mount pad 2, and metal screw can be screwed on ground connection mount pad 2, and ground connection mount pad 2 can be dismantled through metal screw and be connected with filter circuit board 3, and the ground connection solder joint accessible metal screw on the filter circuit board 3 is connected with ground connection mount pad 2 electricity. Two opposite end parts of the metal shielding shell 1 in the length direction are welded with metal shielding side plates 4 to surround and protect the filter circuit board 3.
One of the metal shielding side plates 4 is glued or in threaded connection with an insulating connecting ring 5 which extends outwards along the axial direction, a compact metal net is arranged in the insulating connecting ring 5 and is integrally injection-molded, and a metal conduit 6 which is welded or buckled and electrically connected with the metal shielding side plate 4 is tightly sleeved in the insulating connecting ring 5. As shown in fig. 2 and fig. 3, an input lead 8 penetrates through the metal conduit 6, the input lead 8 is electrically connected with the filter circuit board 3, and one end of the input lead 8, which is far away from the filter circuit board 3, is electrically connected with a metal wiring male 9. The outer wall of the metal wiring male head 9 is provided with a fastening terminal 10 which extends outwards and protrudes, a telescopic groove 18 is formed in the metal wiring male head 9, an elastic rod 19 is arranged in the telescopic groove 18, the fastening terminal 10 is adhered to the elastic rod 19 and tends to move outwards, the elastic rod 19 is adhered to the insulating connecting ring 5 or integrally formed, and the end part of the connection extends out of the telescopic groove 18. The middle part of the elastic rod 19 is provided with an elastic groove 191 in a penetrating way, the elastic groove 191 can increase the elasticity of the elastic rod, increase the deformation range of the elastic rod 19 and enlarge the moving range of the buckling terminal 10. When the elastic rod 19 is integrally injection-molded, a wire mesh is disposed therein, and the wire mesh electrically connects the snap-fit terminal 10 and the male wire connector 9. The elastic rod 19 allows the buckling terminal 10 to extend outward and abut against the inner wall of the buckling groove 16, so that the connection between the metal wiring male head 9 and the metal wiring female head 11 is tighter. After the fastening terminal 10 is fastened into the telescopic slot 18, the elastic rod 19 is pulled by the insulating connection ring 5, the elastic rod 19 can always ensure the elastic action thereof, the fastening terminal 10 cannot have the tendency of moving outwards along with the increase of the service time, the fastening terminal 10 can always tightly abut against the side wall of the fastening slot 16 and cannot be separated from the telescopic slot 18, and the connection effect is stable.
And a metal wiring female head 11 matched with the metal wiring male head 9 is arranged on the other metal shielding side plate 4, an output lead 12 is arranged at the innermost part of the metal wiring female head 11, and the output lead 12 is electrically connected with the filter circuit board 3. After the metal wiring female head 11 is matched with the metal wiring male head 9, the insulating connecting ring 5 is tightly abutted between the metal wiring female head 11 and the metal wiring male head 9, and the compact metal network is electrically connected with the metal wiring female head 11 and the metal wiring male head 9, so that the metal wiring female head and the metal wiring male head are more tightly connected and are electrically connected.
The metal wiring female head 11 comprises a connecting ring 14 made of metal, the metal wiring male head 9 is inserted into the connecting ring 14 and is electrically connected with the metal wiring female head 11, a buckling groove 16 for buckling the buckling terminal 10 is formed on the connecting ring 14, and the buckling groove 16 does not penetrate through any end part of the outer connecting ring 14 far away from the metal shielding shell. A positioning groove 17 for fixing the snap-in terminal 10 is provided in the snap-in groove 16, the opening direction of the positioning groove 17 is far away from the moving direction of the snap-in terminal 10 inserted into the metal wiring female head 11, and the snap-in terminal 10 is positioned after entering the positioning groove 17 along the snap-in groove 16. A first magnetic member 171 made of neodymium magnet is welded to the inner wall of the positioning groove 17. The second magnetic member 172 made of neodymium magnet is welded on the fastening terminal 10, and after the fastening terminal 10 is located in the positioning groove 17, the first magnetic member 171 contacts with the second magnetic member 172, and the polarities of the contacting ends of the two are opposite, and the two are also electrically connected with each other. The first magnetic member 171 and the second magnetic member 172 attract each other, so that the snap terminal 10 is more tightly connected inside the positioning groove 17.
The two portable frequency conversion voltage regulation test devices are connected in series physically and electrically, the metal wiring female head 11 is in plug-in fit with the metal wiring male head 9, the insulating connecting ring 5 is abutted between the metal wiring female head 11 and the metal wiring male head 9 tightly, the two are connected more tightly, and the metal conduit 6 is electrically connected with the metal shielding side plate 4 to realize shielding and enlarge the shielding range. The metal wiring male head 9 is inserted between the inner connecting ring 14 and the outer connecting ring 14, the end part of the buckling terminal 10 penetrating through the buckling groove 16 is clamped into the buckling groove 16, and the shielding area is more uniform and complete. A plurality of portable frequency conversion voltage regulation test device realize establishing ties, and bigger promotion shielding effect promotes its interference killing feature.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A portable frequency conversion voltage regulation test device comprises a metal shielding shell (1), and is characterized in that two opposite end parts of the metal shielding shell (1) are fixedly connected with metal shielding side plates (4), a grounding installation seat (2) is fixedly connected inside the metal shielding shell (1), and the grounding installation seat (2) is detachably connected with a filter circuit board (3);
an insulation connecting ring (5) is fixedly connected to one of the metal shielding side plates (4), a metal conduit (6) electrically connected with the metal shielding side plate (4) is tightly sleeved in the insulation connecting ring (5), an input lead (8) electrically connected with the filter circuit board (3) penetrates through the metal conduit (6), and one end, far away from the filter circuit board (3), of the input lead (8) is electrically connected with a metal wiring male head (9);
a metal wiring female head (11) is fixedly connected to the other metal shielding side plate (4), the metal wiring female head (11) is matched with the metal wiring male head (9), and the metal wiring female head (11) is electrically connected with an output lead (12) which is electrically connected with the filter circuit board (3);
the insulating connecting ring (5) is tightly abutted between the metal wiring female head (11) and the metal wiring male head (9), and a dense metal net is arranged in the insulating connecting ring (5) and electrically connected with the metal wiring female head (11) and the metal wiring male head (9).
2. The portable frequency-conversion voltage-regulation test device according to claim 1, wherein a buckling terminal (10) is fixedly connected to the outer wall of the metal wiring male head (9), the metal wiring female head (11) comprises an outer connecting ring (14), the metal wiring male head (9) is inserted into the outer connecting ring (14) and electrically connected with the metal wiring female head (11), a buckling groove (16) for buckling the buckling terminal (10) is formed in the outer connecting ring (14), a positioning groove (17) for fixing the buckling terminal (10) is formed in the buckling groove (16), the opening direction of the positioning groove (17) is far away from the direction in which the buckling terminal (10) is inserted into the metal wiring female head (11), and a first magnetic piece (171) is fixedly connected into the positioning groove (17).
3. The portable frequency-conversion voltage-regulation test device according to claim 2, wherein a second magnetic member (172) is fixedly connected to the snap-in terminal (10), and after the snap-in terminal (10) is located in the positioning groove (17), the first magnetic member (171) contacts with the second magnetic member (172) and the polarities of the contact ends of the two are opposite.
4. The portable frequency and voltage conversion test device according to claim 2, wherein a telescopic groove (18) is formed in the metal connection male head (9), an elastic rod (19) is fixedly connected in the telescopic groove (18), and the buckling terminal (10) is fixedly connected to the elastic rod (19) and tends to move outwards.
5. The portable variable-frequency voltage-regulating test device according to claim 4, wherein the elastic rod (19) is fixedly connected with the insulating connecting ring (5), and the connected end of the elastic rod extends out of the telescopic groove (18).
6. The portable variable frequency and voltage regulation test device according to claim 5, wherein the buckling groove (16) does not penetrate through either end part of the outer connecting ring (14) far away from the metal shielding shell.
7. The portable frequency-conversion voltage-regulation test device as claimed in claim 6, wherein an elastic groove (191) is formed in the middle of the elastic rod (19) in a penetrating manner.
8. The portable frequency-conversion voltage-regulation test device according to claim 7, wherein a wire mesh is fixedly connected in the elastic rod (19), and the wire mesh is electrically connected with the buckling terminal (10) and the metal wiring male head (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921389005.2U CN210742432U (en) | 2019-08-24 | 2019-08-24 | Portable frequency conversion voltage regulation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921389005.2U CN210742432U (en) | 2019-08-24 | 2019-08-24 | Portable frequency conversion voltage regulation test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210742432U true CN210742432U (en) | 2020-06-12 |
Family
ID=70986386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921389005.2U Active CN210742432U (en) | 2019-08-24 | 2019-08-24 | Portable frequency conversion voltage regulation test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210742432U (en) |
-
2019
- 2019-08-24 CN CN201921389005.2U patent/CN210742432U/en active Active
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