CN208707305U - A kind of tank gage Surge Protector - Google Patents
A kind of tank gage Surge Protector Download PDFInfo
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- CN208707305U CN208707305U CN201821598587.0U CN201821598587U CN208707305U CN 208707305 U CN208707305 U CN 208707305U CN 201821598587 U CN201821598587 U CN 201821598587U CN 208707305 U CN208707305 U CN 208707305U
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- tank gage
- protection circuit
- cable
- box
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Abstract
The utility model discloses a kind of tank gage Surge Protector, including explosion-proof electrification box, cable mouth and ground line line outlet are provided on explosion-proof electrification box；Explosion-proof electrification box is internally provided with protection circuit；The input terminal of protection circuit is correspondingly connected with tank gage controller by the output end of protection route；Protection circuit includes gas-discharge tube and two diode circuits, the diode of two differential concatenations of diode circuit；The first port and second port of gas-discharge tube are separately connected the input terminal of protection circuit, and two diode circuits are parallel to gas-discharge tube both ends, and the third port of gas-discharge tube is grounded, the equal plus earth of diode in two diode circuits.The utility model can quickly be connect with tank gage and tank gage controller, carry out carrying out surge protection to tank gage.
Description
Technical field
The utility model relates to tank gage protective device technical field more particularly to a kind of tank gage Surge Protectors.
Background technique
Surge is just above the transient overvoltage of normal working voltage as its name suggests, and source is divided into external source (thunder and lightning
With the overvoltage that switch operation etc. generates on power circuit in power grid) and house sources (air-conditioning, elevator, air compressor etc.
Irritability load).When generating peak current or voltage suddenly because of extraneous interference in electric loop or communication line,
It is easy the damage to other equipment in circuit.
It cans be counted on one's fingers currently, the protection of surge is arranged in tank gage industry, especially the liquid level in gas station tank area
Meter, surge may cause the serious disasters such as explosion and therefore need a kind of tank gage Surge Protector.
Utility model content
The purpose of the utility model is to provide a kind of tank gage Surge Protectors, can control with tank gage and tank gage
Device quickly connects, and carries out carrying out surge protection to tank gage.
The technical solution adopted in the utility model are as follows:
A kind of tank gage Surge Protector, including explosion-proof electrification box are provided with cable on the explosion-proof electrification box and connect
Line mouth and ground line line outlet；The explosion-proof electrification box is internally provided with protection circuit；The input terminal of the protection circuit
Tank gage controller is correspondingly connected with by the output end of protection route；The protection circuit includes gas-discharge tube and two two poles
Pipe circuit, the diode circuit include the diode of two differential concatenations；The first port of the gas-discharge tube and
Second port is separately connected the input terminal of protection circuit, and two diode circuits are parallel to gas-discharge tube both ends, and gas is put
The third port of fulgurite is grounded, the equal plus earth of diode in two diode circuits.
The number of protection circuit is two in the tank gage Surge Protector, sets a protection circuit as power supply
Protection circuit, another protection circuit are signal guard circuit；The input terminal connection controller electricity of the power supply circuit
The input terminal of source output terminal, the signal guard circuit connects controller signal output.
The tank gage Surge Protector, further includes three-way terminal box；The first interface of the three-way terminal box connects
Connect tank gage controller, the second interface of three-way terminal box connects tank gage, three way junctions with third interface connect anti-explosion electric
The cable mouth of gas box.
The third interface of the three-way terminal box and the cable mouth of explosion-proof electrification box are threadedly coupled.
It is stifled that sealant is provided in the third interface of the three-way terminal box, being provided with cable during sealant is stifled passes through
Hole.
The cable mouth is provided with Cable protecting tube, and the overall diameter of the Cable protecting tube is less than cable and passes through hole
Diameter.
The diode is all made of TVS diode.
The protection circuit of the utility model realizes two-stage protection using gas-discharge tube and diode circuit, and two-stage circuit is matched
It closes and uses, not only met big flow capacity, but also be enable to respond quickly, compensate for gas-discharge tube response time slow disadvantage,
Protection circuit is parallel on signal circuit, avoids additional return loss, and circuit design meets tank gage product design specifications；
The setting of explosion-proof electrification box makes it meet requirement of explosion proof；And the utility model is small in size, light-weight, can restore automatically, installation letter
Folk prescription is just.
Further, the setting of three-way terminal box is so that the utility model and tank gage and tank gage controller are realized fastly
Speed, secure connection.
Further, sealant is set stifled in the interface of three-way terminal box, promotes the sealing performance of Surge Protector,
Cable protecting tube is set in the cable mouth of explosion-proof electrification box, prevents glue is stifled from killing cable, guarantees cable in three way junctions
It is not rotated with it in the connection procedure of box and explosion-proof electrification box and stress guarantees after Surge Protector installation just to being broken
Often operation.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model；
Fig. 2 is the structural schematic diagram of the explosion-proof electrification box.
Specific embodiment
As depicted in figs. 1 and 2, the utility model includes explosion-proof electrification box 1, is arranged on the explosion-proof electrification box 1 wired
Cable connection jaws 2 and ground line line outlet 3；The explosion-proof electrification box 1 is internally provided with protection circuit；The protection circuit packet
Include power supply circuit and signal guard circuit；
The input terminal of the power supply circuit connects controller power source output end；The power supply circuit includes
First gas discharge tube G1, first resistor R1, second resistance R2, first diode D1, the second diode D2, third diode D3
With the 4th diode D4；The first diode D1 and third diode D3 differential concatenation be first diode circuit, first
The plus earth of diode D1 and third diode D3, the second diode D2 and the 4th diode D4 differential concatenation are the two or two pole
The anode of pipe circuit, the plus earth of the second diode D2 and the 4th diode D4, and third diode D3 and the 4th diode
D4 anode is connected；The first port and second port of the first gas discharge tube G1 is separately connected the defeated of power output end
Enter to hold, in the present embodiment, the positive pole of the first port connection power output end of first gas discharge tube G1, first gas is put
The power cathode of the second port connection power output end of fulgurite G1, the third port ground connection of first gas discharge tube G1, first
Diode circuit and the second diode circuit are parallel to gas-discharge tube both ends respectively, in the present embodiment, first diode D1's
Cathode concatenates the first port of connection first gas discharge tube G1 after first resistor R1, the cathode concatenation second of third diode D3
The second port of first gas discharge tube G1 is connected after resistance R2, the cathode connection first diode D1's of the second diode D2 is negative
Pole, the cathode of the cathode connection third diode D3 of the 4th diode D4.
The input terminal of the signal guard circuit connects controller power source output end；The signal guard circuit includes
Second gas discharge tube G2,3rd resistor R3, the 4th resistance R4, the 5th diode D5, the 6th diode D6, the 7th diode D7
With the 8th diode D8；The 5th diode D5 and the 7th diode D7 differential concatenation be third diode circuit, the 5th
The plus earth of diode D5 and the 7th diode D7, the 6th diode D6 and the 8th diode D8 differential concatenation are the four or two pole
Anode and the 8th diode of pipe circuit, the plus earth of the 6th diode D6 and the 8th diode D8, and the 7th diode D7
The anode connection of D8；The first port and second port of the second gas discharge tube G2 is separately connected the defeated of power output end
Enter to hold, in the present embodiment, the anode of the first port connection signal output end of second gas discharge tube G2, second gas discharge tube
The cathode of the second port connection signal output end of G2, the third port ground connection of second gas discharge tube G2；Third diode electricity
Road and the 4th diode circuit are parallel to gas-discharge tube both ends respectively；
The first port of connection second gas discharge tube G2 after the cathode concatenation 3rd resistor R3 of 5th diode D5, the 7th
The cathode of diode D7 concatenates the second port of connection first gas discharge tube G1 after the 4th resistance R4, and the 6th diode D6's is negative
Pole connects the cathode of the 5th diode D5, and the cathode of the 8th diode D8 connects the cathode of the 7th diode D7.
The diode is all made of TVS diode.
The protection circuit of the utility model realizes two-stage protection using gas-discharge tube and diode circuit, and two-stage circuit is matched
It closes and uses, not only met big flow capacity, but also be enable to respond quickly, compensate for gas-discharge tube response time slow disadvantage,
Circuit design meets tank gage product design specifications, meets requirement of explosion proof.
The tank gage Surge Protector, further includes three-way terminal box；The first interface connection tank gage control
Device, the second interface of three-way terminal box connect tank gage, and the cable of the third interface connection explosion-proof electrification box 1 of three-way terminal box connects
Line mouth 2.
The power supply line and signal wire of tank gage controller are penetrated from first interface, are pierced by from second interface, are supplied for tank gage
Electricity and transmit signal between tank gage controller and tank gage.
The protection circuit of the utility model is sealed in explosion-proof electrification box 1, and the input terminal cable of protection circuit is from cable
Connection jaws 2 are pierced by, and penetrate three-way terminal box from the third interface of three-way terminal box, in three-way terminal box with tank gage controller
Power supply line and signal wire be separately connected.
The setting of three-way terminal box, so that the utility model is quickly connect with tank gage and the realization of tank gage controller.
The tank gage Surge Protector, the third interface of the three-way terminal box and the line of explosion-proof electrification box 1
Cable connection jaws 2 are threadedly coupled, simple and reliable, efficient and convenient, improve the installation effectiveness of Surge Protector described in the utility model.
The tank gage Surge Protector, it is stifled to be provided with sealant in the third interface of the three-way terminal box,
Cable is provided with during sealant is stifled across hole.It is passed through during the input terminal cable self-sealing glue of protection circuit is stifled, promotes anti-explosion electric
The sealing effect of gas box 1 reduces the influence of dust, steam to protection circuit in explosion-proof electrification box 1.
The cable mouth 2 is provided with Cable protecting tube 4, and the overall diameter of the Cable protecting tube 4 is worn less than cable
The diameter of via hole.In the threaded connection of cable connection jaws 2 and the third interface of three-way terminal box, sealant is stifled to be easy to happen shape
Become, squeezes the input terminal cable for the protection circuit that cable passes through in hole.Under normal circumstances, with the rotation of explosion-proof electrification box 1,
Cable also rotates with it, once however, sealant is stifled to occur shape extruded cable line, in cable connection jaws 2 and three-way terminal box
Third interface threaded connection when, the rotation of explosion-proof electrification box 1 and cable by sealant blocks up clamping, then sealant blocks up outer electricity
Cable rotates and stress with explosion-proof electrification box 1, it may occur that phenomenon of rupture causes Surge Protector to be unable to normal use.
Cable protecting tube 4 is passed through in hole from cable and is passed through, and the input terminal cable of protection circuit is located at Cable protecting tube 4
In, even if sealant is stifled, deformation occurs, and cable will not still be clamped and kill, and guarantees cable in cable connection jaws 2 and three
It is not influenced and is broken by rotatory force in the screwing process of the third interface of way junction box, guarantee the normal of Surge Protector
It uses.
Claims (7)
1. a kind of tank gage Surge Protector, it is characterised in that: including explosion-proof electrification box, be arranged on the explosion-proof electrification box
There are cable connection jaws and ground line line outlet；The explosion-proof electrification box is internally provided with protection circuit；The protection circuit
Input terminal be correspondingly connected with tank gage controller by the output end of protection route；The protection circuit include gas-discharge tube and
Two diode circuits, the diode circuit include the diode of two differential concatenations；The of the gas-discharge tube
Single port and second port are separately connected the input terminal of protection circuit, and two diode circuits are parallel to gas-discharge tube two
The third port at end, gas-discharge tube is grounded, the equal plus earth of diode in two diode circuits.
2. tank gage Surge Protector according to claim 1, it is characterised in that: the number of the protection circuit is
Two, a protection circuit is set as power supply circuit, another protection circuit is signal guard circuit；The power supply is anti-
The input terminal of protection circuit connects controller power source output end, and the input terminal connection controller signals of the signal guard circuit are defeated
Outlet.
3. tank gage Surge Protector according to claim 2, it is characterised in that: further include three-way terminal box；It is described
The first interface of three-way terminal box connects tank gage controller, and the second interface of three-way terminal box connects tank gage, three way junctions
With third interface connect the cable mouth of explosion-proof electrification box.
4. tank gage Surge Protector according to claim 3, it is characterised in that: the third of the three-way terminal box
The cable mouth of interface and explosion-proof electrification box is threadedly coupled.
5. tank gage Surge Protector according to claim 4, it is characterised in that: the third of the three-way terminal box
It is stifled that it is provided with sealant in interface, is provided with cable across hole during sealant is stifled.
6. tank gage Surge Protector according to claim 5, it is characterised in that: the cable mouth is provided with
Cable protecting tube, the overall diameter of the Cable protecting tube are less than the diameter that cable passes through hole.
7. tank gage Surge Protector according to claim 1, it is characterised in that: the diode is all made of TVS
Diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821598587.0U CN208707305U (en) | 2018-09-29 | 2018-09-29 | A kind of tank gage Surge Protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821598587.0U CN208707305U (en) | 2018-09-29 | 2018-09-29 | A kind of tank gage Surge Protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208707305U true CN208707305U (en) | 2019-04-05 |
Family
ID=65947456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821598587.0U Active CN208707305U (en) | 2018-09-29 | 2018-09-29 | A kind of tank gage Surge Protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208707305U (en) |
-
2018
- 2018-09-29 CN CN201821598587.0U patent/CN208707305U/en active Active
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