CN206210743U - A kind of discharge tube with fuse - Google Patents
A kind of discharge tube with fuse Download PDFInfo
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- CN206210743U CN206210743U CN201621193884.8U CN201621193884U CN206210743U CN 206210743 U CN206210743 U CN 206210743U CN 201621193884 U CN201621193884 U CN 201621193884U CN 206210743 U CN206210743 U CN 206210743U
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- tube
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- porcelain tube
- porcelain
- discharge tube
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Abstract
The utility model discloses a kind of discharge tube with fuse, including discharge tube, the discharge tube includes the first porcelain tube, the first weld tabs, the second weld tabs, first electrode and second electrode, first electrode and second electrode pass through the first weld tabs and the second weld tabs by the two ends port sealing of the first porcelain tube respectively, inert gas is provided with seal cavity in first porcelain tube, wherein：It is provided with the second porcelain tube, the Single port of second porcelain tube is fixed on one end of discharge tube, second electrode is set to enter in the opening of the second porcelain tube, the another port of the second porcelain tube is fixed with the 3rd electrode by the 3rd weld tabs, Thermal Cutoffs is provided between the 3rd electrode and second electrode, and perforate is provided with the second porcelain tube, the second porcelain tube is in non-tight state.The utility model overall structure is simple and compact, and Thermal Cutoffs and discharge tube are constituted the discharge tube of difunctional structure, and it is more convenient than the structure assembling of prior art, and manufacturing cost is lower, but there is more preferable security performance.
Description
Technical field
The utility model is related to discharge tube technical field, particularly a kind of discharge tube with fuse.
Background technology
Gas-discharge tube is used usually as a kind of overvoltage protecting device.Gas-discharge tube is a kind of ceramics or glass envelope
Dress, interior filling with inert gas short circuit type protection device；Its basic operation principle is gas discharge, when the electricity at its electrode two ends
When pressure exceedes the breakdown voltage of gas, gap discharge will be caused, " zero resistance " state is rapidly converted to by high resistance state,
So as to limit the voltage of interpolar, protected other devices in parallel with gas-discharge tube.Due to gas-discharge tube this
The presence of one gas discharge characteristic, when it is used alone the protection in power distribution system equipment, easily causes afterflow to cause short circuit
Accident occurs, therefore gas-discharge tube is mainly used in the protection of communication line, and reason is the operating voltage and electricity of communication system
Stream will not the generation afterflow of guiding discharge pipe.
But gas-discharge tube is applied in a power distribution system in itself without leakage current, after being connected with piezo-resistance, can be effective
Raising piezo-resistance life-span, piezo-resistance can avoid gas-discharge tube produce afterflow.Therefore, piezo-resistance series connection gas
The mode of discharge tube is widely applied in the equipment of high reliability request, such as communication apparatus, railway signals equipment.
But, when temporary overvoltage occurs in distribution system or during pressure responsive resistor failure, when the voltage magnitude of system exceedes
During the breakdown voltage of gas-discharge tube, lasting arc discharge can be produced between the electrode of gas-discharge tube two, while moment produces pole
Temperature high causes metal electrode to melt, and the component for so easilying lead to surrounding catches fire, so that whole circuit is present sternly
The potential safety hazard of weight.
Existing application publication number is the Chinese invention patent application of CN105097386A, discloses a kind of with Thermal protection
Gas-discharge tube, including gas-discharge tube main body, the gas-discharge tube main body include a shell and are arranged on shell two ends
First electrode and second electrode, also including a Thermal Cutoffs or a Pyromagnetic release, the Thermal Cutoffs or thermo magnetic trip release
Device is connected with second electrode.The present invention is set in circuit, and when gas-discharge tube persistence drag arc, its high temperature for producing makes temperature
Fuse or Pyromagnetic release disconnect, so that gas-discharge tube disconnects with circuit, it is to avoid high temperature causes other components to catch fire,
Protection circuit.With fillings such as electrode, fusing auxiliary agents in its porcelain tube for placing porcelain tube Thermal Cutoffs, it is more expensive to manufacture and raw
Production. art is more complicated, is unfavorable for the quick production of automation.
Utility model content
The technical problems to be solved in the utility model is directed to above-mentioned the deficiencies in the prior art, there is provided a kind of simple structure,
Low cost of manufacture, assemble the convenient and safely and efficiently discharge tube with fuse.
In order to solve the above technical problems, technical solution adopted in the utility model is：A kind of discharge tube with fuse,
Including discharge tube, the discharge tube includes the first porcelain tube, the first weld tabs, the second weld tabs, first electrode and second electrode, first electrode
With second electrode respectively by first weld tabs and the second weld tabs by the two ends port sealing of first porcelain tube, first porcelain
Inert gas is provided with seal cavity in pipe, wherein：The second porcelain tube is provided with, the Single port of second porcelain tube is fixed on described
One end of discharge tube, makes the second electrode enter in the opening of second porcelain tube, and the another port of second porcelain tube leads to
Cross the 3rd weld tabs and be fixed with the 3rd electrode, Thermal Cutoffs is provided between the 3rd electrode and the second electrode, and
Perforate is provided with second porcelain tube, second porcelain tube is in non-tight state.
In above-mentioned technical proposal, the width of the open-ended thickness more than the circular weld tab of second porcelain tube.
In above-mentioned technical proposal, the perforate is the breach being arranged on the second porcelain tube tube wall.
In above-mentioned technical proposal, the external diameter of the external diameter less than second weld tabs of the second electrode makes second weldering
The external margin of piece forms circular weld tab, and the open-ended of second porcelain tube is fixed on first porcelain by the circular weld tab
Guan Shang.
In above-mentioned technical proposal, the second electrode covers the open-ended of the second porcelain tube.
In above-mentioned technical proposal, the external diameter of second porcelain tube is identical with the external diameter of first porcelain tube.
The beneficial effects of the utility model are：Overall structure is simple and compact, and Thermal Cutoffs and discharge tube composition is double
The discharge tube of functional structure, it is more convenient than the structure assembling of prior art, and manufacturing cost is lower, but there is preferably peace
Full performance.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is decomposition texture schematic diagram of the present utility model；
Fig. 3 is the structural representation of the utility model discharge tube.
In figure, 1, discharge tube；11st, the first porcelain tube；12nd, the first weld tabs；13rd, the second weld tabs；14th, first electrode；15th, second
Electrode；16th, circular weld tab；20th, the second porcelain tube；21st, the 3rd weld tabs；22nd, the 3rd electrode；23rd, perforate；24th, Thermal Cutoffs.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, 2, 3, a kind of discharge tube with fuse, including discharge tube 1, the discharge tube 1 includes the first porcelain tube
11st, the first weld tabs 12, the second weld tabs 13, first electrode 14 and second electrode 15, first electrode 14 and second electrode 15 are led to respectively
The weld tabs 13 of first weld tabs 12 and second is crossed by the two ends port sealing of first porcelain tube 11, it is close in first porcelain tube 11
Inert gas is provided with envelope cavity, wherein：The second porcelain tube 20 is provided with, the Single port of second porcelain tube 20 is fixed on the electric discharge
One end of pipe 1, makes the second electrode 15 enter in the opening of second porcelain tube 20, the another port of second porcelain tube 20
3rd electrode 22 is fixed with by the 3rd weld tabs 21, temperature guarantor is provided between the 3rd electrode 22 and the second electrode 15
Dangerous silk 24, and perforate 23 is provided with second porcelain tube 20, second porcelain tube 20 is in non-tight state.This is opened
Hole 23 makes that in the second porcelain tube 20 discharge cavity will not be formed, and can be avoided between the electrode 22 of second electrode 15 and the 3rd shape again
Occur into the situation for puncturing sealing gas conducting electric discharge.
Wherein, the perforate 23 is the breach being arranged on the tube wall of the second porcelain tube 20.The setting of breach is according to product
Design needs can be adjusted.Breach is set on tube wall can improve the global reliability of porcelain tube.
Wherein, the external diameter of the second electrode 15 makes second weld tabs 13 less than the external diameter of second weld tabs 13
External margin forms circular weld tab 16, and the circular weld tab 16 is actually the second weld tabs 13 and exposes portion relative to second electrode 15
Point, the open-ended of second porcelain tube 20 is fixed on first porcelain tube 11 by the circular weld tab 16.Second porcelain
The open-ended thickness of pipe 20 enables the second weld tabs 13 to be entirely used for fixing more than the width of the circular weld tab 16,
Substantially strengthen the structural soundness between the second porcelain tube 20 and the first porcelain tube 11, improve integrally-built reliability and stability.
Wherein, the second electrode 15 covers the open-ended of the second porcelain tube 20.In order to improve the second porcelain tube 20
Installation steadiness on the first porcelain tube 11, the external diameter of second electrode 15 is set to and the open-ended internal diameter of the second porcelain tube 20
It is close smaller, the structure annexation between the porcelain tube 20 of second electrode 15 and second can be made compacter and reliable, so as to carry
Overall reliability high.
Wherein, the external diameter of second porcelain tube 20 is identical with the external diameter of first porcelain tube 11.Make the outer of the second porcelain tube 20
Surface and the flush with outer surface of the first porcelain tube 11, overall structure are reliable and stable.
Operation principle of the present utility model：When discharge tube 1 generates heat, Thermal Cutoffs 24 fuses, due to being provided with perforate 23,
Discharge cavity can not be formed in second porcelain tube 20, after the fusing of Thermal Cutoffs 24, cannot be discharged, second electrode 15 and the
Opened a way between three electrodes 22, make discharge tube 1 also into open failure.
Embodiment above is to indicate that rather than limitation the utility model, therefore all according to the utility model patent application
The equivalent change or modification that method described in scope is done, is included in the utility model patent claim.
Claims (6)
1. a kind of discharge tube with fuse, including discharge tube, the discharge tube include the first porcelain tube, the first weld tabs, the second weld tabs,
First electrode and second electrode, first electrode and second electrode pass through first weld tabs and the second weld tabs by described first respectively
The two ends port sealing of porcelain tube, inert gas is provided with the seal cavity in first porcelain tube, it is characterised in that：It is provided with second
Porcelain tube, the Single port of second porcelain tube is fixed on one end of the discharge tube, the second electrode is entered second porcelain tube
Opening in, the another port of second porcelain tube is fixed with the 3rd electrode by the 3rd weld tabs, the 3rd electrode with it is described
Thermal Cutoffs is provided between second electrode, and perforate is provided with second porcelain tube, made at second porcelain tube
In non-tight state.
2. a kind of discharge tube with fuse according to claim 1, it is characterised in that：The perforate is described to be arranged at
Breach on second porcelain tube tube wall.
3. a kind of discharge tube with fuse according to claim 1, it is characterised in that：The external diameter of the second electrode is small
In the external diameter of second weld tabs, the external margin of second weld tabs is set to form circular weld tab, the end of second porcelain tube
Opening is fixed on first porcelain tube by the circular weld tab.
4. a kind of discharge tube with fuse according to claim 3, it is characterised in that：Open the end of second porcelain tube
Width of the thickness of mouth more than the circular weld tab.
5. a kind of discharge tube with fuse according to claim 1, it is characterised in that：The second electrode is by described
The open-ended of two porcelain tubes covers.
6. a kind of discharge tube with fuse according to claim 1, it is characterised in that：The external diameter of second porcelain tube with
The external diameter of first porcelain tube is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621193884.8U CN206210743U (en) | 2016-11-07 | 2016-11-07 | A kind of discharge tube with fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621193884.8U CN206210743U (en) | 2016-11-07 | 2016-11-07 | A kind of discharge tube with fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206210743U true CN206210743U (en) | 2017-05-31 |
Family
ID=58752885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621193884.8U Active CN206210743U (en) | 2016-11-07 | 2016-11-07 | A kind of discharge tube with fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206210743U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107658695A (en) * | 2017-11-08 | 2018-02-02 | 深圳市瑞隆源电子有限公司 | The open loop failure mode discharge tube and its electronic circuit of a kind of external disabling device |
| CN108306173A (en) * | 2017-12-22 | 2018-07-20 | 广东百圳君耀电子有限公司 | Gas-discharge tube |
-
2016
- 2016-11-07 CN CN201621193884.8U patent/CN206210743U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107658695A (en) * | 2017-11-08 | 2018-02-02 | 深圳市瑞隆源电子有限公司 | The open loop failure mode discharge tube and its electronic circuit of a kind of external disabling device |
| CN108306173A (en) * | 2017-12-22 | 2018-07-20 | 广东百圳君耀电子有限公司 | Gas-discharge tube |
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