CN203312802U - Three-wire system screw-in type surge protection device - Google Patents
Three-wire system screw-in type surge protection device Download PDFInfo
- Publication number
- CN203312802U CN203312802U CN2013203226566U CN201320322656U CN203312802U CN 203312802 U CN203312802 U CN 203312802U CN 2013203226566 U CN2013203226566 U CN 2013203226566U CN 201320322656 U CN201320322656 U CN 201320322656U CN 203312802 U CN203312802 U CN 203312802U
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- Prior art keywords
- gas discharge
- discharge tube
- wire system
- screw
- surge protector
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Abstract
The utility model discloses a screw-in surge protection device for an on-site three-wire system instrument having three wire connection openings. The screw-in surge protection device comprises a shell body, a wire connection terminal, a wire connection terminal board, a circuit board and an insulation sleeve tube, wherein the circuit board is arranged in the insulation sleeve tube, the insulation sleeve tube is arranged in a fixed seat, the wire connection terminal is electrically connected with the circuit board through the wire connection terminal board, and the shell body is sleeved on the insulation sleeve tube and is fixedly connected with the fixed seat. The screw-in surge protection device can effectively prevent surge voltage from causing interference or damage to an on-side electronic device or system.
Description
Technical field
The utility model relates to a kind of Surge Protector, particularly relates to a kind of three-wire system screw-in Surge Protector.
Background technology
On electronic system and network line, often can be subject to extraneous instantaneous overvoltage and disturb, these interference sources mainly comprise: due to break-make inductive load or start and stop high power load, the switching overvoltage that line fault etc. produce; The lightning surge caused due to natural phenomenas such as thunders and lightnings.This overvoltage (or overcurrent) is called surge voltage (or surge current), is that a kind of transition is disturbed.The trouble free service of surge voltage meeting serious harm electronic system.The elimination surge noise disturbs, and prevents that surge damnification from being the key problem of connection-related electricity use subset safe and reliable operation always.
The utility model content
The technical problem that the utility model mainly solves is to provide a kind of three-wire system screw-in Surge Protector, can effectively prevent interference and the harm of surge voltage to on-the-spot electronic equipment.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of three-wire system screw-in Surge Protector is provided, comprise: housing, binding post, terminal board, circuit board and insulating sleeve, wherein, described circuit board is placed in insulating sleeve, described insulating sleeve is placed in holder, and described binding post is electrically connected to circuit board by terminal board, and described housing is sheathed on insulating sleeve and with holder and is fixedly linked, circuit on described circuit board comprises the first to the 3rd input, the first to the 3rd gas discharge tube, the first to the 3rd resistance, the first to the 3rd Transient Suppression Diode and the first to the 3rd output, the first end of described the first gas discharge tube is connected with first input end, the second end of described the first gas discharge tube is connected with the second input, the 3rd end of described the first gas discharge tube is connected with the first end of the second gas discharge tube, the second end of described the second gas discharge tube is connected with first input end, the 3rd end ground connection of described the second gas discharge tube, the first end of described the 3rd gas discharge tube is connected with the second end of the first gas discharge tube, the second end of described the 3rd gas discharge tube is connected with the second end of the first gas discharge tube, the 3rd end of described the 3rd gas discharge tube is connected with the 3rd input, the second end of described the second gas discharge tube also is connected with the first output by the first resistance, the second end of described the second gas discharge tube is connected with the negative electrode of the first Transient Suppression Diode with the node between the first output, the anode of described the first Transient Suppression Diode all is connected with the anode of second and third Transient Suppression Diode, the negative electrode of described the second Transient Suppression Diode is connected with the second output, and the negative electrode of described the 3rd Transient Suppression Diode is connected with the 3rd output, the second end of described the first gas discharge tube also directly is connected with the negative electrode of the second Transient Suppression Diode by the second resistance, and the 3rd end of described the 3rd gas discharge tube also directly is connected with the negative electrode of the 3rd Transient Suppression Diode by the 3rd resistance.
Further, described housing is the hexagon prism of a hollow, and its first end is extended with an adapter sleeve toward the direction away from the second end, and the inwall of described adapter sleeve offers internal thread, and the inwall of the second end of described housing offers internal thread.
Further, described binding post comprises pedestal and three binding posts, on described pedestal, offers three through holes and this three through holes are electrically connected to three binding posts respectively.
Further, described terminal board is the pancake shape, on it, offers three through holes and a screw, and on the another side of described terminal board, offers a groove.
Further, described holder is the cylindrical tube of a hollow, on the excircle of its first end, be provided with external screw thread, the first end of described holder is toward away from the second end, being extended with the adapter sleeve of a hollow, the internal diameter of described adapter sleeve is less than the internal diameter of holder, and is provided with internal thread on the inner periphery of described adapter sleeve.
Further, also there is hold down gag at the second end place of described holder along the excircle direction fixing of holder, offers a screw on one of them side of described hold down gag.
Further, the discharge capability of described each gas discharge tube is 20KA.
Further, the power of described each Transient Suppression Diode is 1500W.
Further, the resistance of described each resistance is 5.1 ohm, and power is 2 watts.
Owing on the utility model three-wire system screw-in Surge Protector, being parallel with gas discharge tube; adopt the shunting defensive measure; be about to surge voltage within the very short time with the earth short circuit; make surge current minute inflow place; reach the purpose that weakens and eliminate overvoltage, overcurrent, thereby play the effect of protection electronic equipments safety operation.
The accompanying drawing explanation
Fig. 1 is the exploded view of the preferred embodiments of the utility model three-wire system screw-in Surge Protector.
Fig. 2 is the assembly drawing of three-wire system screw-in Surge Protector in Fig. 1.
Fig. 3 is the circuit diagram on circuit board in Fig. 1.
Embodiment
Below in conjunction with drawings and embodiments, the utility model is elaborated.
Please refer to Figure 1 and Figure 2, the preferred embodiments of the utility model three-wire system screw-in Surge Protector comprises: housing 1, binding post 2, terminal board 6, circuit board 3, insulating sleeve 4 and holder 5.Described circuit board 3 is placed in insulating sleeve 4, and described insulating sleeve 4 is placed in holder 5, and described binding post 2 is electrically connected to circuit board 3 by terminal board 6, and described housing 1 is sheathed on insulating sleeve 4 and with holder 5 and is fixedly linked.
Particularly, described housing 1 is one roughly to be the hollow tube of hexagon prism-shaped, its first end is extended with an adapter sleeve 10 toward the direction away from the second end, and the inwall of described adapter sleeve 10 offers internal thread, and the inwall of the second end of described housing 1 also offers internal thread.Described binding post 2 comprises that pedestal and three binding post 22(Fig. 1 only illustrate one), on described pedestal, offer three through holes and this three through holes are electrically connected to three binding posts 22 respectively.Described terminal board 6 is the pancake shape, on it, offers three through holes 60 and a screw 62, and on the another side of described terminal board 6, offers a groove 66.
Described insulating sleeve 4 is the cylindrical tube of a hollow, and described circuit board 3 is placed in insulating sleeve 4.Described holder 5 is the cylindrical tube of a hollow, on the excircle of its first end, be provided with external screw thread, the first end of described holder 5 is toward away from the second end, being extended with the adapter sleeve 50 of a hollow, the internal diameter of described adapter sleeve 50 is less than the internal diameter of holder 5, and is provided with internal thread on the inner periphery of described adapter sleeve 50.Also there is hold down gag 56 at the second end place of described holder 5 along the excircle direction fixing of holder 5.In present embodiment, described hold down gag 56 is a hexagon prism-shaped, on one of them limit, offers a screw 560.
During assembling, first circuit board 3 is placed in insulating sleeve 4, then the insulating sleeve 4 that inside is equipped with circuit board 3 is placed in to the inside of holder 5.Three binding posts 22 of described binding post 2 are corresponding to be inserted in three through holes 60 of terminal boards 6, and by screw, locks in the screw 62 of terminal board 6 so that binding post 2 and terminal board 6 are fixed.
Again the end of described circuit board 3 away from the second end of holder 5 is fastened in the groove 66 of terminal board 6 afterwards, can makes three through holes of binding post 2 be electrically connected to circuit board 3.Then a pad 68 is entangled to the second end and the close hold down gag 56 of holder 5.Then housing 1 is sheathed on to the second end of holder 5 and the screw thread of the second end of the internal thread of the second end of housing 1 and holder 5 is screwed.By screw being passed successively to briquetting 562, spring 566, lock afterwards in the screw 560 on the side of hold down gag 56 and get final product, so be about to whole three-wire system screw-in Surge Protector and assembled.Three-wire system screw-in Surge Protector after having assembled as shown in Figure 2.
In present embodiment, described insulating sleeve 4 is placed in holder 5 and uses epoxy resin encapsulated when interior, can work under the bad working environments environment to guarantee product.Described insulating sleeve 4 can be Huang Laguan, and it has good flexibility, elasticity, insulating properties and chemical resistance, for the protection of being placed in its inner circuit board 3.
Please continue to refer to shown in Figure 3, the circuit on described circuit board 3 comprises three input IN1, IN2 and IN3, gas discharge tube SA1, SA2 and SA3, resistance R 1, R2 and R3, Transient Suppression Diode D1, D2 and D3, three output OUT1, OUT2 and OUT3.
The first end of described gas discharge tube SA1 is connected with input IN1, the second end of described gas discharge tube SA1 is connected with input IN2, the 3rd end of described gas discharge tube SA1 is connected with the first end of gas discharge tube SA2, the second end of described gas discharge tube SA2 is connected with input IN1, the 3rd end ground connection of described gas discharge tube SA2.The first end of described gas discharge tube SA3 is connected with the second end of gas discharge tube SA1, and the second end of described gas discharge tube SA3 is connected with the second end of gas discharge tube SA1, and the 3rd end of described gas discharge tube SA3 is connected with input IN3.
The second end of described gas discharge tube SA2 also is connected with output OUT1 by resistance R 1.The second end of described gas discharge tube SA2 is connected with the negative electrode of Transient Suppression Diode D1 with the node between output OUT1, the anode of described Transient Suppression Diode D1 all is connected with the anode of Transient Suppression Diode D2 and D3, the negative electrode of described Transient Suppression Diode D2 is connected with output OUT2, and the negative electrode of described Transient Suppression Diode D3 is connected with output OUT3.
The second end of described gas discharge tube SA1 also directly is connected with the negative electrode of Transient Suppression Diode D2 by resistance R 2, and the 3rd end of described gas discharge tube SA3 also directly is connected with the negative electrode of Transient Suppression Diode D3 by resistance R 3.
Described three input IN1, IN2 and IN3 be for being electrically connected to three binding posts of binding post 2, so can make external signal circuit (not shown) can by with three through holes of binding post 2, be connected so that realization and circuit board 3 on three input IN1, IN2 and IN3 be electrically connected to; Described two output OUT1 and OUT2 are for being connected with the electronic equipment needed protection.
Wherein, described housing 1 can be made by stainless steel, copper alloy, aluminium alloy or Polymer Synthesizing plastic or other material as required.
Wherein, it is the gas discharge tube of 20KA that described gas discharge tube SA1, SA2 and SA3 all adopt discharge capability, its operation principle is: when applied voltage increases to the dielectric strength over gas, the gap of two interpolars is by discharge breakdown, by original state of insulation, be converted into conduction state, the voltage after conducting between discharge tube the two poles of the earth maintains the residual voltage level that electric arc channel determines of putting.
Wherein, all to adopt power be the diode of 1500W for described Transient Suppression Diode D1, D2 and D3.When the two poles of the earth of Transient Suppression Diode D1, D2 and D3 are subject to reverse transient state high energy impact events; it can become Low ESR by the high impedance of its two interpolar at a terrific speed; the surge power of absorption up to thousands of watts; make the voltage clamp of two interpolars in a predetermined value; effectively protect the precision components in electronic circuit, avoid the damage of various surge pulses.
Further, in present embodiment, the resistance of described resistance R 1, R2 and R3 is 5.1 ohm, and power is 2 watts.
During use, only an end of the utility model three-wire system screw-in Surge Protector need be screwed into to the electronic equipment needed protection, the other end is connected with external signal circuit and power supply, and the 3rd end ground connection of gas discharge tube SA1 gets final product.
The characteristics of the utility model three-wire system screw-in Surge Protector: owing to being parallel with gas discharge tube on the utility model screw-in Surge Protector; adopt the shunting defensive measure; be about to surge voltage within the very short time with the earth short circuit; make surge current minute inflow place; reach the purpose that weakens and eliminate overvoltage, overcurrent, thereby play the effect of protection electronic equipments safety operation.
These are only execution mode of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.
Claims (9)
1. three-wire system screw-in Surge Protector, it is characterized in that: described three-wire system screw-in Surge Protector comprises: housing, binding post, terminal board, circuit board and insulating sleeve, wherein, described circuit board is placed in insulating sleeve, described insulating sleeve is placed in holder, described binding post is electrically connected to circuit board by terminal board, and described housing is sheathed on insulating sleeve and with holder and is fixedly linked, circuit on described circuit board comprises the first to the 3rd input, the first to the 3rd gas discharge tube, the first to the 3rd resistance, the first to the 3rd Transient Suppression Diode and the first to the 3rd output, the first end of described the first gas discharge tube is connected with first input end, the second end of described the first gas discharge tube is connected with the second input, the 3rd end of described the first gas discharge tube is connected with the first end of the second gas discharge tube, the second end of described the second gas discharge tube is connected with first input end, the 3rd end ground connection of described the second gas discharge tube, the first end of described the 3rd gas discharge tube is connected with the second end of the first gas discharge tube, the second end of described the 3rd gas discharge tube is connected with the second end of the first gas discharge tube, the 3rd end of described the 3rd gas discharge tube is connected with the 3rd input, the second end of described the second gas discharge tube also is connected with the first output by the first resistance, the second end of described the second gas discharge tube is connected with the negative electrode of the first Transient Suppression Diode with the node between the first output, the anode of described the first Transient Suppression Diode all is connected with the anode of second and third Transient Suppression Diode, the negative electrode of described the second Transient Suppression Diode is connected with the second output, and the negative electrode of described the 3rd Transient Suppression Diode is connected with the 3rd output, the second end of described the first gas discharge tube also directly is connected with the negative electrode of the second Transient Suppression Diode by the second resistance, and the 3rd end of described the 3rd gas discharge tube also directly is connected with the negative electrode of the 3rd Transient Suppression Diode by the 3rd resistance.
2. three-wire system screw-in Surge Protector according to claim 1; it is characterized in that: described housing is the hexagon prism of a hollow; its first end is extended with an adapter sleeve toward the direction away from the second end; the inwall of described adapter sleeve offers internal thread, and the inwall of the second end of described housing offers internal thread.
3. three-wire system screw-in Surge Protector according to claim 1, it is characterized in that: described binding post comprises pedestal and three binding posts, on described pedestal, offers three through holes and this three through holes are electrically connected to three binding posts respectively.
4. three-wire system screw-in Surge Protector according to claim 1, it is characterized in that: described terminal board is the pancake shape, on it, offers three through holes and a screw, and on the another side of described terminal board, offers a groove.
5. three-wire system screw-in Surge Protector according to claim 1; it is characterized in that: described holder is the cylindrical tube of a hollow; on the excircle of its first end, be provided with external screw thread; the first end of described holder is toward away from the second end, being extended with the adapter sleeve of a hollow; the internal diameter of described adapter sleeve is less than the internal diameter of holder, and is provided with internal thread on the inner periphery of described adapter sleeve.
6. three-wire system screw-in Surge Protector according to claim 5 is characterized in that: the second end place of described holder also fixes hold down gag is arranged along the excircle direction of holder, offers a screw on one of them side of described hold down gag.
7. three-wire system screw-in Surge Protector according to claim 1, it is characterized in that: the discharge capability of described each gas discharge tube is 20KA.
8. three-wire system screw-in Surge Protector according to claim 1, it is characterized in that: the power of described each Transient Suppression Diode is 1500W.
9. three-wire system screw-in Surge Protector according to claim 1, it is characterized in that: the resistance of described each resistance is 5.1 ohm, power is 2 watts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203226566U CN203312802U (en) | 2013-06-05 | 2013-06-05 | Three-wire system screw-in type surge protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203226566U CN203312802U (en) | 2013-06-05 | 2013-06-05 | Three-wire system screw-in type surge protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203312802U true CN203312802U (en) | 2013-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203226566U Expired - Lifetime CN203312802U (en) | 2013-06-05 | 2013-06-05 | Three-wire system screw-in type surge protection device |
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| CN (1) | CN203312802U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112722A (en) * | 2019-06-04 | 2019-08-09 | 安徽华东光电技术研究所有限公司 | Surge suppression modules and preparation method thereof |
-
2013
- 2013-06-05 CN CN2013203226566U patent/CN203312802U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112722A (en) * | 2019-06-04 | 2019-08-09 | 安徽华东光电技术研究所有限公司 | Surge suppression modules and preparation method thereof |
| CN110112722B (en) * | 2019-06-04 | 2021-07-27 | 安徽华东光电技术研究所有限公司 | Surge suppression module and manufacturing method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |
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| CX01 | Expiry of patent term |