CN201315482Y - Lightning arrester for lightning protection on coalmine electronic equipment and circuit - Google Patents
Lightning arrester for lightning protection on coalmine electronic equipment and circuit Download PDFInfo
- Publication number
- CN201315482Y CN201315482Y CNU2008201247317U CN200820124731U CN201315482Y CN 201315482 Y CN201315482 Y CN 201315482Y CN U2008201247317 U CNU2008201247317 U CN U2008201247317U CN 200820124731 U CN200820124731 U CN 200820124731U CN 201315482 Y CN201315482 Y CN 201315482Y
- Authority
- CN
- China
- Prior art keywords
- lightning
- protection
- arrester
- arresting
- arrest pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a lightning arrester for lightning protection on coalmine electronic equipment and a circuit, which comprises a lightning-arresting tube group, wherein the lightning-arresting tube group is connected with a delay device, which is connected with a voltage limiter. The lightning-arresting tube group comprises a first lightning-arresting tube and a second lightning-arresting tube which is connected in parallel with the first lightning-arresting tube; and the first and the second lightning-arresting tubes connected in parallel are connected with a third lightning-arresting tube in series. The lightning arrester is a lightning protection device installed before the descent of coalmine communication and power supply to prevent the affection of lightning on the circuit, can timely release the surge voltage caused by lightning protection, and is used to protect underground equipment from being affected by lightning surge and also protect various system equipment from being harmed by the induction lightning stroke and surge voltage of a signal transmission line.
Description
Technical field
The utility model relates to a kind of lightning arrester, relate in particular to a kind of that install before being used for colliery communication and power supply and going into the well, prevent the lightning protection lightning protection that thunder and lightning impacts intrinsically safe circuit.Belong to lightning protection lightning-protecting engineering field.
Background technology
Lightning arrester has tubular type and valve formula two big classes.Valve type arrester is divided into carborundum lightning arrester and metal oxide arrester (claiming zinc oxide arrester again).Expulsion type arrester is mainly used in the incoming relay-protection in electric substation, power plant and the protection of line insulation weakness.The carborundum lightning arrester is widely used in the AC and DC system, the insulation of protection generating, converting equipment.Zinc oxide arrester is progressively replacing the latter because protective value is better than the carborundum lightning arrester, is widely used in the AC and DC system, and protection is generated electricity, the insulation of converting equipment, is particularly useful for 110 kilovolts and above electrical network of neutral point effective grounding.In the special dimension of colliery operation, the safety that guarantees the colliery underground equipment is to guarantee the important step of coal mine operation, in the practical work, thunder and lightning is very serious to the influence of underground communica tion equipment, therefore, in order to guarantee the safety of communication equipment under the coal mine, it is crucial researching and developing a kind of lightning protection that is applied to special dimension.
The utility model content
The purpose of this utility model is the shortcoming that exists in the prior art in order to overcome, and provide a kind of that install before being used for colliery communication and power supply and going into the well, prevent the lightning protection lightning protection that thunder and lightning impacts intrinsically safe circuit.
The lightning arrester that is used for colliery electronic equipment and line circuit lightning protection of the present utility model is achieved through the following technical solutions:
The lightning arrester that is used for colliery electronic equipment and line circuit lightning protection of the present utility model comprises a lightning-arrest pipe group, and described lightning-arrest Guan Zuyu delay device connects, and described delay device is connected with the pressure limiting device.Delay device generally is made up of elements such as inductance coil, electric capacity, has the function that suppresses the rate of voltage rise, and the pressure limiting device has the low pressure drain function, can discharge the overvoltage energy that thunder and lightning causes, the intrinsically safe circuit of protection pressure limiting device back.
Further, described lightning-arrest pipe group comprises the 1st lightning-arrest pipe and the 2nd lightning-arrest pipe that is in parallel with it, and described the 1st lightning-arrest pipe that is in parallel, the 2nd lightning-arrest Guan Yudi 3 lightning-arrest pipes are in series.
Under rated voltage, the electric current that flows through the lightning-arrest pipe of this lightning arrester only is 10
-5Below the A, be equivalent to insulator.When the voltage on acting on lightning-arrest pipe surpassed definite value (starting resistor), lightning-arrest pipe " conducting " leaked into big electric current in the earth by lightning-arrest pipe, and this moment, its residual voltage can not surpass the withstand voltage of protected equipment, had reached the protection purpose.After this, be used as with voltage drop to starting resistor when following, lightning-arrest pipe stops " conducting " state automatically, recovers state of insulation.
The beneficial effect that the relative prior art of the utility model has:
1, the lightning arrester that is used for colliery electronic equipment and line circuit lightning protection of the present utility model, be specifically designed to install before colliery communication or power-supply device are gone into the well, prevent the special equipment that thunder and lightning impacts intrinsically safe circuit (underground equipment).Can in time let out the surge voltage that anti-thunder and lightning causes, be used to protect underground equipment not to be subjected to the influence of lightning surge, also can protect various system equipments to avoid the harm that brings from the indirect lightning strike and the surge voltage of signal transmssion line.
2, the lightning arrester that is used for colliery electronic equipment and line circuit lightning protection of the present utility model has advantages such as deboost is low, response is fast, easy for installation, production cost is low.
Description of drawings
Fig. 1 is the lightning arrester internal module structure chart that is used for colliery electronic equipment and line circuit lightning protection of the present utility model.
Embodiment
Understand the technical solution of the utility model for one of ordinary skill in the art can be known, the existing work in conjunction with the accompanying drawings further at large illustrates:
The lightning arrester that is used for colliery electronic equipment and line circuit lightning protection of the present utility model as shown in Figure 1, comprises a lightning-arrest pipe group 2, and lightning-arrest pipe group 2 is connected with delay device 3, and delay device 3 is connected with pressure limiting device 4.
Lightning-arrest pipe group 2 comprises the 1st lightning-arrest pipe 21 and the 2nd lightning-arrest pipe 22 that is in parallel with it, and the 1st lightning-arrest pipe the 21, the 2nd lightning-arrest pipe the 22 and the 3rd lightning-arrest pipe 23 that is in parallel is in series.
Embodiment: as shown in Figure 1; lightning arrester 1 one ends of the present utility model are connected with ground installation 6; the other end is connected with the intrinsically safe circuit 5 (underground equipment) that is arranged on the down-hole; when having the feasible voltage that acts on the lightning-arrest pipe 1 of abominable thunder and lightning weather or other reasons to surpass starting resistor in the environment; at this moment the 1st lightning-arrest pipe 21; 23 " conductings " of the 2nd lightning-arrest pipe the 22 and the 3rd lightning-arrest pipe; delay device 3 plays the effect that suppresses the rate of voltage rise; and pressure limiting device 4 has the low pressure drain function; can discharge the overvoltage energy that thunder and lightning causes; big electric current is leaked into the earth; make that the residual voltage of lightning arrester 1 can be not the withstand voltage of intrinsically safe circuit 5 above protected equipment, thereby effectively protection is not damaged by intrinsically safe circuit 5.After this, when the voltage that acts on lightning-arrest pipe group 2 drops to starting resistor when following, lightning-arrest pipe group 2 stops " conducting " state automatically, recovers state of insulation, and circuit recovers normally to move.
Claims (2)
1, a kind of lightning arrester that is used for colliery electronic equipment and line circuit lightning protection is characterized in that, comprises a lightning-arrest pipe group (2), and described lightning-arrest pipe group (2) is connected with delay device (3), and described delay device (3) is connected with pressure limiting device (4).
2, by the described lightning arrester that is used for colliery electronic equipment and line circuit lightning protection of claim 1, it is characterized in that, described lightning-arrest pipe group (2) comprises the first lightning-arrest pipe (21) and the 2nd lightning-arrest pipe (22) that is in parallel with it, and the described first lightning-arrest pipe (21) that is in parallel, the 2nd lightning-arrest pipe (22) are in series with the 3rd lightning-arrest pipe (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201247317U CN201315482Y (en) | 2008-12-16 | 2008-12-16 | Lightning arrester for lightning protection on coalmine electronic equipment and circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201247317U CN201315482Y (en) | 2008-12-16 | 2008-12-16 | Lightning arrester for lightning protection on coalmine electronic equipment and circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201315482Y true CN201315482Y (en) | 2009-09-23 |
Family
ID=41127282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201247317U Expired - Fee Related CN201315482Y (en) | 2008-12-16 | 2008-12-16 | Lightning arrester for lightning protection on coalmine electronic equipment and circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201315482Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420424A (en) * | 2011-12-16 | 2012-04-18 | 铜陵浩岩节能科技有限公司 | Lightning shielding tester |
-
2008
- 2008-12-16 CN CNU2008201247317U patent/CN201315482Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420424A (en) * | 2011-12-16 | 2012-04-18 | 铜陵浩岩节能科技有限公司 | Lightning shielding tester |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104134988A (en) | Multifunctional lightning protection device of intelligent single-phase electric meter | |
| CN203103937U (en) | Multifunctional solid decoupler | |
| CN201315482Y (en) | Lightning arrester for lightning protection on coalmine electronic equipment and circuit | |
| CN203617704U (en) | Equipotential cutoff anti-thunder multifunctional power-source-protecting circuit | |
| CN205646796U (en) | Mining monitoring substation surge protection circuit | |
| CN201690231U (en) | Nonlinear neutral point ground resistor | |
| CN204012686U (en) | A kind of serial interface circuit with lightning protection function | |
| CN201584776U (en) | Surge protector of telephone network system | |
| CN204012695U (en) | Single-phase intelligent ammeter multifunctional lightning protection device | |
| CN201766357U (en) | Lightning protection device of electric-heating deicing system of aircraft pitot tube | |
| CN201118170Y (en) | 20kV overhead insulation-line over-voltage protection apparatus | |
| CN201656466U (en) | Device for limiting transient recovery voltage | |
| CN201584777U (en) | Power source surge protector | |
| CN210806737U (en) | Special explosion-proof lightning protection box for gas pipeline | |
| CN110164638A (en) | The electric transmission line lightning arrester device of the air gap is adjusted according to environmental data | |
| CN203871853U (en) | Lightning protection concentrator | |
| CN103762577A (en) | Communication line thunder prevention device | |
| CN201417943Y (en) | Explosion-proof power source lightning protection box | |
| CN201466704U (en) | Equipotential isolator and lightning protection device | |
| CN203278219U (en) | Remote measurement centralized meter reading collector communication lightning protection device | |
| CN2456352Y (en) | Computer lightning protection installation | |
| CN202474854U (en) | Isolated single-phase power supply lightning protector | |
| CN211579205U (en) | Outdoor combined box type transition switch cabinet | |
| CN201639284U (en) | 20 kV combined overvoltage protecting device | |
| CN208209517U (en) | Photovoltaic junction box anti-induction lightning stroke device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090923 Termination date: 20111216 |