CN208360982U - Intrinsic safety explosion-proof lightning current current divider - Google Patents
Intrinsic safety explosion-proof lightning current current divider Download PDFInfo
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- CN208360982U CN208360982U CN201820420408.8U CN201820420408U CN208360982U CN 208360982 U CN208360982 U CN 208360982U CN 201820420408 U CN201820420408 U CN 201820420408U CN 208360982 U CN208360982 U CN 208360982U
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- reel
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Abstract
There is wind spring shell on a kind of intrinsic safety explosion-proof lightning current current divider, mounting and fixing support right side, is equipped with wind spring in wind spring shell；Reel assembly includes the inside and outside reel connected by fixed ring, and copper wire woven band is wound around the outside of fixed ring；Outside, internal axle sleeve be respectively fixedly connected with outside, the opposite medial surface of interior reel；Outer shaft and fixed ring are conductively connected by conducting wire；The left end for the main shaft being fixedly connected with reel assembly is connected to the center of outer shaft side end panel；The right part of main shaft is connect by left shaft holder and right bearing seat with mounting and fixing support and wind spring shell；It is provided with the axocoel for axially penetrating through setting at the axle center of main shaft, is fitted with diversion column in axocoel；The left end of diversion column is plugged in the blind hole at side end panel center, and right end is pierced by by right bearing seat；Position limiting convex ring is provided on diversion column；Compressed spring is provided between position limiting convex ring and right bearing seat.Phenomena such as water conservancy diversion resistance can be effectively reduced in the current divider, can effectively avoid the electric arc easily occurred during lightning current water conservancy diversion, sparking.
Description
Technical field
The utility model belongs to the lightning diverter technical field of floating roof tank, and in particular to a kind of intrinsic safety explosion-proof lightning current
Current divider.
Background technique
Large-scale crude oil stock tank is generally floating roof tank, its floating plate is swum in above crude oil when use.Currently, former in order to prevent
Oil and gas is leaked from the edge of floating plate, is usually sealed against, this sealing is completed by non-conductive material, usually butyronitrile rubber
Glue, this material can make electric insulation between floating plate and tank skin, and floating plate is made to become isolated conductor.Since crude oil resistivity is higher,
Occur in thunder and lightning and crude oil can generate a large amount of electrostatic charges when crude oil quick tinning, these charges will gradually be transferred to a band
Have opposite charges has on the conductor of gravitation.Due to being influenced by tank skin low potential, floating plate will collect crude oil electrostatic charge, the electrostatic charge
Induced voltage up to up to a hundred or even upper kilovolt, air puncture voltage is about 500kV/m, and standard floating plate is about with tank skin gap
200mm, due to sealing material aging and process deviation, floating plate can be reduced with tank skin gap, electrostatic charge induced electricity between the two
Pressure can form the spill over of igniting property when being about 100kV, once sealing material aging oil and gas is overflowed, can cause fire thing
Therefore.National standard " Code for design of petroleum depots " (GB 50074-2002) and " petroleum and petroleum installations thunder and lightning safety standard "
(GB15599-95) have clear stipulaties to floating plate lightning protection, anti-static grounding: " floating top oil tank or covered floating roof tank should not be installed and be kept away
Thunder needle, but floating roof should be electrically connected with tank body with 2 conducting wires.Floating top oil tank connecting wire should select cross section to be not less than
25mm2Soft copper answer twisted wire.For covered floating roof tank, steel floating plate oil tank connecting wire should select cross section not less than 16mm2's
Soft copper answers twisted wire；The stainless steel wirerope that aluminum floating plate oil tank connecting wire should select diameter to be not less than 1.8mm ".Traditional original
The lightning protection of oil measure tank floating plate, anti-static grounding mode generally use two 25mm2Soft copper answer twisted wire by tank wall top section by big
It is connect in the high length of tank with floating plate, when floating plate is increased with liquid level, soft copper is answered twisted wire and is scattered on floating plate, due to crude oil vapor
Sulfur-bearing and the factor exposed to wind and rain make the soft copper answer twisted wire easily to corrode, thus there are security risks.In order to eliminate this safety
Hidden danger installs lightning current current divider additional mostly on floating roof tank.Lightning current current divider is low frequency lightning current in external floating roof tank floating plate
Discharge device connects floating plate and tank skin by part flow arrangement, no matter floating plate in any position, middle low frequency lightning current current divider is led
Line is always in minimum stretching state, to have the smallest inductance, lightning current and bound charge are timely and effectively imported the earth,
Inhibit the instantaneous overvoltage between floating plate and tank skin, prevent from sealing annular spacing and occur flashover (electric arc), realizes current divider and tank
The low-impedance electrical connection of wall, it is ensured that the middle low frequency lightning current on floating plate is discharged in time, to avoid floating plate due to thunder and lightning
It circulates and out-of-date gap spark phenomenon occurs.
Existing country's external floating top tank lightning current current divider is all made of plane scroll spring and is fixed on shell and shaft one end
On, copper wire woven band is fixed to be wrapped in the shaft other end, and stretching by the elastic force of plane scroll spring for copper wire woven band controls.
This structure in actual use, due to being connected by lightning current shunt body structure between copper wire woven band and tank skin,
And lightning current shunt body structure is not punctured, use is thicker not to provide stable supporting role by lightning current
Become rusty steel plate, this just considerably increases water conservancy diversion resistance, and lightning current current divider is mainly assembled connection in structure, and rotating part is logical
It crosses bearing to connect with main shaft, component movement part.Due to motion parts there are gaps may when carrying out lightning current water conservancy diversion
Generate electric arc even spark phenomenon.In order to avoid such case, some products increase carbon brush in motion parts, in order to thunder and lightning
Conductance stream, but influenced since deformation and environment is used for a long time, stability is also greatly affected, and there are certain safety
Hidden danger.
Summary of the invention
In view of the above-mentioned problems of the prior art, the utility model provides a kind of intrinsic safety explosion-proof lightning current current divider,
Water conservancy diversion resistance can be effectively reduced in the current divider, and electric arc, sparking for easily occurring during lightning current water conservancy diversion etc. can effectively be avoided to pacify
Full hidden danger, meanwhile, the structure of current divider entirety is more stable, can effectively extend the service life of plane scroll spring.
To achieve the goals above, the utility model provides a kind of intrinsic safety explosion-proof lightning current current divider, including installation is admittedly
Determine frame, the reel assembly on the left of mounting and fixing support and the main shaft perpendicular to reel assembly setting, the mounting and fixing support
Right side is fixedly connected with wind spring shell, and the wind spring enclosure interior has wind spring chamber, is provided with plane scroll in the wind spring chamber
Spring；
The reel assembly includes copper wire woven band and interior reel disposed in parallel and outer reel, wherein interior reel and outer volume
The center of disk is fixedly connected by fixed ring；The copper wire woven band is wound around the outside of fixed ring, and its inner end and fixed ring
Outer surface is fixedly connected, and outer end is located at the outside of reel assembly；
It further include the outer shaft and internal axle sleeve between fixed ring inner ring surface is set, wherein outer shaft and internal axle sleeve are fixed respectively
It is connected to the opposite medial surface of outer reel and interior reel；It is conductively connected between outer shaft and fixed ring by conducting wire；
The left end of the main shaft is connected in outer shaft side end panel after sequentially passing through the center of interior reel and fixed ring
The heart, and main shaft is fixedly connected with outer shaft and internal axle sleeve；The right end of main shaft is sequentially passing through the bearing in left shaft holder, installation
Be plugged in after fixed frame, wind spring chamber center and wind spring shell in the bearing in right bearing seat, left shaft holder, right bearing seat respectively and
It is fixedly connected between mounting and fixing support, wind spring shell, main shaft is carried out by the bearing in left shaft holder, the bearing in right bearing seat
Axial limiting；It is provided with the axocoel for axially penetrating through setting at the axle center of main shaft, is fitted with diversion column in the axocoel；
The outer end of the plane scroll spring is fixedly connected with wind spring case inside wall, fixed outside inner end and main shaft to connect
It connects；
The left end of the diversion column is plugged in the blind hole that outer shaft side end panel right center is arranged in, and right end is from right axle
It holds in the pilot hole at center and is pierced by, diversion column can slide axially in pilot hole；Diversion column in pilot hole with left part
It is provided with the position limiting convex ring that outer diameter is less than axocoel internal diameter；Diversion column outer sheath between position limiting convex ring and right bearing seat is equipped with pressure
Contracting spring.
In the technical scheme, left end and outer shaft side may be implemented in diversion column under the resilient force of compressed spring
The close contact of plate, can guarantee has good contact condition between diversion column and outer shaft, makes diversion column during installation in this way
Right end contact tank skin lightning current can be made by the direct water conservancy diversion to tank skin of diversion column when thunder and lightning is connected, and by with
The earthing or grounding means and the earth that tank skin is connected are formed into a loop；By the setting of diversion column, solves the thunder and lightning of lightning current current divider
Conductance flow problem makes lightning current not pass through lightning current shunt body structure in water conservancy diversion, is able to achieve tank skin and copper wire woven band
Between conductive path direct conducting, so can effectively avoid electric arc, sparking for easily occurring during lightning current water conservancy diversion etc. pacify
Full hidden danger.Meanwhile water conservancy diversion resistance is effectively further reduced, so that lightning current current divider is had the characteristics that intrinsic safety explosion-proof, more
Add safe and reliable.By making main shaft be connected to by left shaft holder and right bearing seat the left and right sides of wind spring chamber, and horizontally
Limit cooperation is formed, the motion structure of main shaft can be made more stable, and then increases the stability of plane scroll spring, is effectively extended
The service life of plane scroll spring.The setting of blind hole can guarantee that diversion column inner end is remained and closely connect with outer shaft side end panel
The state of touching.
Further, in order to guarantee in reel assembly rotation process, copper wire woven band can be wound in an orderly manner fixed ring,
In annular housing between outer reel and interior reel；It further include the Wire bundling frame being fixedly connected with mounting and fixing support, the Wire bundling frame
In the left arc bar and right arc bar that there is left and right to be oppositely arranged for the lower section of reel assembly, left arc bar and right arc gear
Bar is respectively set between the lower section of outer reel and interior reel, left arc bar and right arc bar spaced by more
Connecting rod is fixedly connected；The outer end of copper wire woven band is pierced by by being located between two connecting rods adjacent below reel assembly.
Further, in order to realize main shaft horizontally stable position limiting structure, so that main shaft is more flat in rotary course
Surely, and then also can make can be more stable in the action process of plane scroll spring, and the main shaft is on the right side of left shaft holder middle (center) bearing
Side is provided with the limit convex shoulder for carrying out left limit to main shaft, and main shaft is installed in the left lateral position connecting with right bearing seat middle (center) bearing
It is equipped with the positioning shaft shoulder for carrying out right limit.
Further, in order to keep the wear-resisting property of outer shaft preferable, and there is good electric conductivity, the outer shaft is not using
Rust steel is made.
Further, in order to avoid rain or sundries enter the space between outer reel and interior reel in use
In, the left side of the mounting and fixing support is also fixedly connected with cover, and the cover is located at the outside on reel assembly top.
Further, in order to reduce conductive resistance, the outer reel, interior reel and diversion column are all made of copper material.
The utility model effectively increases the stability of plane scroll spring, and improve plane scroll spring uses the longevity
Life, keeps overall structure more stable, and is provided with guiding device, and further reduce water conservancy diversion resistance, ensure that thunder and lightning conductance
The safety of stream process.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the right view of Fig. 1；
Fig. 3 is the partial enlarged view in the portion A in Fig. 1；
Fig. 4 is the partial enlarged view in the portion B in Fig. 1.
In figure: 1, mounting and fixing support, 2, reel assembly, 3, main shaft, 4, copper wire woven band, 5, interior reel, 6, outer reel,
7, fixed ring, 8, cover, 9, outer shaft, 10, internal axle sleeve, 11, conducting wire, 12, wind spring shell, 13, wind spring chamber, 14, left shaft holder,
15, right bearing seat, 16, plane scroll spring, 17, axocoel, 18, diversion column, 19, position limiting convex ring, 20, blind hole, 21, pilot hole,
22, compressed spring, 23, limit convex shoulder, 24, positioning shaft shoulder, 25, left arc bar, 26, right arc bar, 27, Wire bundling frame, 28,
Connecting rod.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
"upper", "lower", " left side " and " right side " mentioned in following text, that is seen when with viewer towards Fig. 1 is upper and lower
Left and right is consistent.
As depicted in figs. 1 and 2, a kind of intrinsic safety explosion-proof lightning current current divider, including mounting and fixing support 1, to be located at installation solid
The main shaft 3 determining the reel assembly 2 in 1 left side of frame and being arranged perpendicular to reel assembly 2, the right side of the mounting and fixing support 1 is fixed to be connected
It is connected to wind spring shell 12, there is wind spring chamber 13 inside the wind spring shell 12, be provided with plane scroll bullet in the wind spring chamber 13
Spring 16；
The reel assembly 2 includes copper wire woven band 4 and interior reel 5 disposed in parallel and outer reel 6, wherein interior reel 5
It is fixedly connected with the center of outer reel 6 by fixed ring 7；The copper wire woven band 4 is wound around the outside of fixed ring 7, and in it
End is fixedly connected with 7 outer surface of fixed ring, and outer end is located at the outside of reel assembly 2；
It further include the outer shaft 9 and internal axle sleeve 10 between 7 inner ring surface of fixed ring is set, wherein outer shaft 9 and internal axle sleeve 10
It is respectively fixedly connected with the opposite medial surface in outer reel 6 and interior reel 5；As shown in figure 3, passing through between outer shaft 9 and fixed ring 7
Conducting wire 11 is conductively connected；
The left end of the main shaft 3 is connected to 9 side end panel of outer shaft after sequentially passing through the center of interior reel 5 and fixed ring 7
Center, and main shaft 3 is fixedly connected with outer shaft 9 and internal axle sleeve 10；The right end of main shaft 3 is in sequentially passing through left shaft holder 14
Bearing, mounting and fixing support 1, be plugged in the bearing in right bearing seat 15 after 13 center of wind spring chamber and wind spring shell 12, left axle
Hold seat 14, right bearing seat 15 is fixedly connected between mounting and fixing support 1, wind spring shell 12 respectively, main shaft 3 pass through left shaft holder 14
In bearing, bearing in right bearing seat 15 carry out axial limiting；The axis for axially penetrating through setting is provided at the axle center of main shaft 3
Chamber 17 is fitted with diversion column 18 in the axocoel 17；
The outer end of the plane scroll spring 16 is fixedly connected with 12 inner sidewall of wind spring shell, outside inner end and main shaft 3
It is fixedly connected；
As shown in figure 4, the left end of the diversion column 18 is plugged in the blind hole 20 that 9 side end panel right center of outer shaft is arranged in
In, right end is pierced by from the pilot hole 21 at 15 center of right bearing seat, and diversion column 18 can slide axially in pilot hole 21；Water conservancy diversion
Column 18 is provided with the position limiting convex ring 19 that outer diameter is less than 17 internal diameter of axocoel with left part in pilot hole 21；In 19 He of position limiting convex ring
18 outer sheath of diversion column between right bearing seat 15 is equipped with compressed spring 22.
In order to realize main shaft horizontally stable position limiting structure, so that main shaft is more steady in rotary course, in turn
Also can make can be more stable in the action process of plane scroll spring, and the main shaft 3 is set on the right side of 14 middle (center) bearing of left shaft holder
It is equipped with the limit convex shoulder 23 for carrying out left limit to main shaft 3,14 middle (center) bearing of left shaft holder with left shaft holder 14 by being fixedly connected
Bearing gland limited；Main shaft 3 is provided in the leftward position connecting with 15 middle (center) bearing of right bearing seat for carrying out right limit
The positioning shaft shoulder 24 of position.
In order to guarantee in reel assembly rotation process, copper wire woven band can be wound in fixed ring, outer reel in an orderly manner
It further include the Wire bundling frame 27 being fixedly connected with mounting and fixing support 1 in annular housing between interior reel, the Wire bundling frame 27 exists
The left arc bar 25 and right arc bar 26 that there is left and right to be oppositely arranged for the lower section of reel assembly 2, left arc bar 25 and the right side
Arc bar 26 is respectively set to be passed through between the lower section of outer reel 6 and interior reel 5, left arc bar 25 and right arc bar 26
More spaced connecting rods 28 are fixedly connected；The outer end of copper wire woven band 4 is by being located at two adjacent companies of 2 lower section of reel assembly
It is pierced by between bar 28.
In order to keep the wear-resisting property of outer shaft preferable, and there is good electric conductivity, the outer shaft 9 uses stainless steel
At.
As shown in Figure 1, in order to avoid rain or sundries enter between outer reel and interior reel in use
In space, the left side of the mounting and fixing support 1 is also fixedly connected with cover 8, and the cover 8 is located at 2 top of reel assembly
Outside.
As a preference, the current diverter is in addition to outer shaft 9 is stainless steel material, other components are all made of copper material
Matter.
This is for lightning current current divider in use, being bolted to connection mounting and fixing support 1 in floating roof tank
On wall, and it is resisted against the right end of diversion column 18 on tank skin, and apply conducting resinl, position is on the extreme higher position that floating roof can reach
At about 1 meter of side, the lower end of copper wire woven band 4 is bolted on floating top of tank, and guarantees that copper wire woven band 4 pulls out
Afterwards with the lower part of the corresponding cavity space when outer reel 6 and interior reel 5, guarantee do not have during sliding up and down in floating roof
Interference of other objects to copper wire woven band 4, to guarantee that copper wire woven band 4 can automatically retract.If it is close to store up pot liquid
Tank holds, and floating roof is located at storage tank the top, at about 1 meter of the lower section of mounting and fixing support 1,1 meter of the stretching of copper wire woven band 4 at this time, remaining part
Divide and is wrapped in the annular housing formed between fixed ring 7 and outer reel 6 and interior reel 5；If tank level decline, floating roof with
Decline, gravity pulls reel assembly 2 to rotate, and copper wire woven band 4 is drawn out to suitable length；If floating roof rises, reel
Component 2 can drive reel assembly 2 to rotate backward by the restoring force of the plane scroll spring 16 inside wind spring chamber 13, and copper wire is compiled
Ribbon 3 is withdrawn, and is wrapped in the outside of fixed ring 7.Diversion column 18 is under the elastic force effect of compressed spring 22, and left end is always and outside
The side end panel of axle sleeve 9 is in close contact, and right end ensure that during the installation process to be contacted always with tank skin, in this way, no matter floating
Top is in where, which can guarantee that the earth cable between floating roof and tank skin is in possible minimum length, by
Longer in the length of cable, impedance is higher, so the diverter can guarantee the connection impedance between floating plate and tank skin
In minimum value.In addition, diversion column 18 remains that the direct conduction between outer shaft 9 and tank skin connects, and outer shaft 9 is logical
It crosses conducting wire 11 to connect with fixed ring 7, and then diversion column 18 can be made to be directly connected to copper wire woven band 4 and tank skin.Leading lightning current
Do not pass through lightning current shunt body structure when stream, avoids the security risks such as electric arc, the sparking during lightning current water conservancy diversion, and
Water conservancy diversion resistance is further reduced, so that lightning current current divider is had the characteristics that intrinsic safety explosion-proof, more securely and reliably.
Claims (6)
1. a kind of intrinsic safety explosion-proof lightning current current divider, including mounting and fixing support (1), the volume being located on the left of mounting and fixing support (1)
Disk component (2) and main shaft (3) perpendicular to reel assembly (2) setting, are fixedly connected with volume on the right side of the mounting and fixing support (1)
Spring shell (12), the wind spring shell (12) is internal to have wind spring chamber (13), is provided with plane scroll in the wind spring chamber (13)
Spring (16)；
The reel assembly (2) includes copper wire woven band (4) and interior reel disposed in parallel (5) and outer reel (6), wherein involute
Disk (5) is fixedly connected with the center of outer reel (6) by fixed ring (7)；The copper wire woven band (4) is wound around fixed ring (7)
Outside, and its inner end is fixedly connected with fixed ring (7) outer surface, and outer end is located at the outside of reel assembly (2)；
It is characterized in that, further include that outer shaft (9) and internal axle sleeve (10) between fixed ring (7) inner ring surface is arranged, wherein outer shaft
Set (9) and internal axle sleeve (10) are respectively fixedly connected with the opposite medial surface in outer reel (6) and interior reel (5)；Outer shaft (9) and solid
Determine to be conductively connected between ring (7) by conducting wire (11)；
The left end of the main shaft (3) is connected to outer shaft (9) side behind the center for sequentially passing through interior reel (5) and fixed ring (7)
The center of end plate, and main shaft (3) is fixedly connected with outer shaft (9) and internal axle sleeve (10)；The right end of main shaft (3) is sequentially passing through
Right bearing is plugged in after bearing, mounting and fixing support (1), wind spring chamber (13) center and wind spring shell (12) in left shaft holder (14)
Seat (15) in bearing in, left shaft holder (14), right bearing seat (15) respectively with mounting and fixing support (1), wind spring shell (12) it
Between be fixedly connected, main shaft (3) carries out axial limiting by the bearing in left shaft holder (14), the bearing in right bearing seat (15)；
It is provided with the axocoel (17) for axially penetrating through setting at the axle center of main shaft (3), is fitted with diversion column (18) in the axocoel (17)；
The outer end of the plane scroll spring (16) is fixedly connected with wind spring shell (12) inner sidewall, and inner end and main shaft (3) are outside
Portion is fixedly connected；
The left end of the diversion column (18), which is plugged in, to be arranged in the blind hole (20) of outer shaft (9) side end panel right center, right
End is pierced by from the pilot hole (21) at right bearing seat (15) center, and diversion column (18) can slide axially in pilot hole (21)；It leads
Fluidization tower (18) is provided with the position limiting convex ring (19) that outer diameter is less than axocoel (17) internal diameter with left part in pilot hole (21)；It is limiting
Diversion column (18) outer sheath between position bulge loop (19) and right bearing seat (15) is equipped with compressed spring (22).
2. a kind of intrinsic safety explosion-proof lightning current current divider according to claim 1, which is characterized in that further include solid with installation
Determine the Wire bundling frame (27) that frame (1) is fixedly connected, the Wire bundling frame (27) in the lower section of reel assembly (2) there is left and right to be oppositely arranged
Left arc bar (25) and right arc bar (26), left arc bar (25) and right arc bar (26) be respectively set and roll up outside
The lower section of disk (6) and interior reel (5) passes through more spaced companies between left arc bar (25) and right arc bar (26)
Bar (28) is fixedly connected；The outer end of copper wire woven band (4) is by being located between two connecting rods (28) adjacent below reel assembly (2)
It is pierced by.
3. a kind of intrinsic safety explosion-proof lightning current current divider according to claim 1 or 2, which is characterized in that the main shaft (3)
The limit convex shoulder (23) for main shaft (3) to be carried out with left limit, main shaft (3) are provided on the right side of left shaft holder (14) middle (center) bearing
The leftward position connecting with right bearing seat (15) middle (center) bearing is provided with the positioning shaft shoulder (24) for carrying out right limit.
4. a kind of intrinsic safety explosion-proof lightning current current divider according to claim 3, which is characterized in that the outer shaft (9)
It is made of stainless steel.
5. a kind of intrinsic safety explosion-proof lightning current current divider according to claim 4, which is characterized in that the mounting and fixing support
(1) left side is also fixedly connected with cover (8), and the cover (8) is located at the outside on reel assembly (2) top.
6. a kind of intrinsic safety explosion-proof lightning current current divider according to claim 5, which is characterized in that the outer reel (6),
Interior reel (5) and diversion column (18) are all made of copper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820420408.8U CN208360982U (en) | 2018-03-27 | 2018-03-27 | Intrinsic safety explosion-proof lightning current current divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820420408.8U CN208360982U (en) | 2018-03-27 | 2018-03-27 | Intrinsic safety explosion-proof lightning current current divider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208360982U true CN208360982U (en) | 2019-01-11 |
Family
ID=64922218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820420408.8U Withdrawn - After Issue CN208360982U (en) | 2018-03-27 | 2018-03-27 | Intrinsic safety explosion-proof lightning current current divider |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208360982U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609304A (en) * | 2018-03-27 | 2018-10-02 | 江苏德大石化科技有限公司 | A kind of intrinsic safety explosion-proof lightning current current divider |
-
2018
- 2018-03-27 CN CN201820420408.8U patent/CN208360982U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108609304A (en) * | 2018-03-27 | 2018-10-02 | 江苏德大石化科技有限公司 | A kind of intrinsic safety explosion-proof lightning current current divider |
| CN108609304B (en) * | 2018-03-27 | 2023-10-03 | 江苏德大石化科技有限公司 | Intrinsic safety explosion-proof lightning current shunt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190111 Effective date of abandoning: 20231003 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190111 Effective date of abandoning: 20231003 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |