CN106499866A - Safe pressure relief device - Google Patents
Safe pressure relief device Download PDFInfo
- Publication number
- CN106499866A CN106499866A CN201710013681.9A CN201710013681A CN106499866A CN 106499866 A CN106499866 A CN 106499866A CN 201710013681 A CN201710013681 A CN 201710013681A CN 106499866 A CN106499866 A CN 106499866A
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- CN
- China
- Prior art keywords
- pressure release
- cylinder body
- release cylinder
- interior
- drive link
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
The invention discloses a kind of safe pressure relief device, including：Pressure release cylinder body and the lifting handle for being arranged on pressure release cylinder body upper end, the pressure release cylinder interior side is provided with pressure-releasing chamber and the first positioning inclined-plane, sealing gasket is provided with the described first positioning inclined-plane, the oil leak hole being interconnected with pressure-releasing chamber is provided with the pressure release cylinder body, the pressure release cylinder interior opposite side is provided with installation cavity, head pulley is provided with by middle part axis of rotation in the installation intracavity, the head pulley is connected with pressure release cylinder body by torsion spring, it is provided with the head pulley and turns fixed handle, the head pulley upper end installation intracavity by axis of rotation be provided with leading block, installation intracavity in the head pulley lower end is rotated by lower rotary shaft and is provided with lower leading block, slide at the middle part of the pressure release cylinder body and be provided with plug.
Description
Technical field
A kind of a kind of the present invention relates to well control control equipment, more particularly to safe pressure relief device.
Background technology
Pressure relief device is the key device of pressure release in well-control equipment maintenance process, is mainly used in preventer oil circuit oil nonyl, control
The pressure release of the well-control equipment oil circuit oil nonyl such as device oil circuit oil nonyl processed and throttle well killing manifold oil circuit oil nonyl, in drilling well, well workover process
In there is the maintenance that must carry out well-control equipment in particular cases efficiently controlling well kick or gas blowout accident, in order to ensure
The pressure security pressure release of oil line pipe in maintenance process, carries out pressure release using a kind of safe pressure relief device and is particularly important.Mesh
Front is all that big pipe vice is greatly and heavy and difficult using the elastic operation of big pipe vice during to oil line pipe operation maintenance pressure release
To carry, carrying, inconvenient operation, while the hydraulic oil in operation maintenance pressure leak process in pipeline can spray on four sides, pollution ring
Border, or even be sprayed onto on the clothes and human body of staff, unnecessary damage is caused, a kind of safe and reliable, work how is designed
The convenient pressure relief device of industry becomes people's problem in the urgent need to address.
Content of the invention
The technical problem to be solved is：There is provided a kind of using effect good safe pressure relief device.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is：Safe pressure relief device, including：Pressure release cylinder
Body and the lifting handle for being arranged on pressure release cylinder body upper end, are provided with pressure-releasing chamber and the first positioning in the pressure release cylinder interior side
Inclined-plane, in the described first positioning inclined-plane is provided with sealing gasket, is provided with and is interconnected with pressure-releasing chamber on the pressure release cylinder body
Oil leak hole, the pressure release cylinder interior opposite side is provided with installation cavity, described installation intracavity pass through middle part axis of rotation
Head pulley is provided with, the head pulley is connected with pressure release cylinder body by torsion spring, rotation is provided with the head pulley
Handle, the head pulley upper end installation intracavity by axis of rotation be provided with leading block, under the head pulley
The installation intracavity at end is rotated by lower rotary shaft and is provided with lower leading block, is slided at the middle part of the pressure release cylinder body and is provided with core
Rod, is provided with sealing ring between the plug and pressure release cylinder body, and pressure release intracavity is stretched in one end of the plug, the plug
The other end stretch into install intracavity with slide laterally be arranged on install intracavity vertical drive link be connected, the vertical drive link
Middle part is connected with one end of trace by pin, and the other end of the trace is rotatably arranged on main cunning by the first bearing pin
On wheel, the upper end for stretching out pressure release cylinder body in the vertical drive link is provided with steel cable limited block, stretches in the vertical drive link
The lower end for going out pressure release cylinder body is provided with lower steel cable limited block, the upper end of the pressure release cylinder body is provided with upper sliding sleeve, on described
Slide in sliding sleeve and be provided with the first top shoe, one end of first top shoe is connected with upper sliding sleeve by upper spring, described
The other end of the first top shoe is rotated by upper pin and upper latch segment and is connected, and is provided with upper hopper chute on described in latch segment,
One end of upper horizontal drive link is slidably arranged in upper hopper chute by the second top shoe, and the other end of the upper horizontal drive link leads to
The upper end that adjusting nut is crossed with vertical drive link is connected, and is equipped with steel cable on described in steel wire limited block, described on
One end of steel cable is stretched into and is connected with the first top shoe in upper sliding sleeve, and the other end of the upper steel cable is through upper leading block and master
The side of pulley is connected, and the lower end of the pressure release cylinder body is provided with low sleeve, slides in the low sleeve and is provided with the
One sliding block, one end of first sliding block are connected with low sleeve by lower spring, the other end of first sliding block
Being rotated with lower latch segment by lower bearing pin and being connected, gliding groove, one end of lower horizontal drive link is provided with the lower latch segment
Be slidably arranged in gliding groove by the second sliding block, the other end of the lower horizontal drive link by lower adjusting nut with vertical
The upper end of drive link is connected, and is equipped with lower steel cable on described in steel wire limited block, and downslide is stretched in one end of the lower steel cable
It is connected with the first sliding block in set, the other end of the lower steel cable is connected through lower leading block with the opposite side of head pulley
Connect.
It is an advantage of the invention that：Above-mentioned safe pressure relief device, compact conformation, small volume are lightweight, carry, easy to operate,
Reduce the labor intensity of staff, while locking pressure release can be carried out to well-control equipment oil circuit oil nonyl, pressure release is safe and reliable, energy
Enough prevent the hydraulic oil four sides in pipeline from spraying, protect the environment of surrounding and the safety of staff, using effect is good.
Description of the drawings
Fig. 1 is the structural representation of safe pressure relief device of the present invention.
Structural representation when Fig. 2 is safe pressure relief device pressure release of the present invention.
In figure：1st, pressure release cylinder body, 2, lifting handle, 3, pressure-releasing chamber, the 4, first positioning inclined-plane, 5, sealing gasket, 6, oil leak hole,
7th, installation cavity, 8, middle part rotating shaft, 9, head pulley, 10, torsion spring, 11, rotate handle, 12, upper rotating shaft, 13, upper leading block,
14th, lower rotary shaft, 15, lower leading block, 16, plug, 161, sealing ring, 17, vertical drive link, 18, pin, 19, trace,
20th, the first bearing pin, 21, upper steel cable limited block, 22, lower steel cable limited block, 23, upper sliding sleeve, the 24, first top shoe, 25, upper bullet
Spring, 26, upper pin, 27, upper latch segment, 28, upper hopper chute, 29, upper horizontal drive link, the 30, second top shoe, 31, upper regulation spiral shell
Mother, 32, upper steel cable, 33, low sleeve, the 34, first sliding block, 35, lower spring, 36, lower bearing pin, 37, lower latch segment, 38, glide
Groove, 39, lower horizontal drive link, the 40, second sliding block, 41, lower adjusting nut, 42, lower steel cable, 43, oily nonyl, the 44, second positioning
Inclined-plane, 45, locking step, 46, valve element, 47, back-moving spring, 48, passage.
Specific embodiment
The particular content of the present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, safe pressure relief device, including：Pressure release cylinder body 1 and the lifting handle for being arranged on 1 upper end of pressure release cylinder body
2,1 interior side of pressure release cylinder body is provided with pressure-releasing chamber 3 and the first positioning inclined-plane 4, sets in the described first positioning inclined-plane 4
Sealing gasket 5 is equipped with, the oil leak hole 6 being interconnected with pressure-releasing chamber 3 is provided with the pressure release cylinder body 1, in the pressure release cylinder body 1
Internal opposite side is provided with installation cavity 7, is rotated by middle part rotating shaft 8 and be provided with head pulley 9, the master in the installation cavity 7
Pulley 9 is connected with pressure release cylinder body 1 by torsion spring 10, is provided with rotation handle 11, in the master on the head pulley 9
Rotated by upper rotating shaft 12 in the installation cavity 7 of 9 upper end of pulley and be provided with upper leading block 13, in the peace of 9 lower end of the head pulley
7 interior rotations by lower rotary shaft 14 of behaveing affectedly are provided with lower leading block 15, slide at the middle part of the pressure release cylinder body 1 and are provided with plug
16, sealing ring 161 is provided between the plug 16 and pressure release cylinder body 1, one end of the plug 16 is stretched in pressure-releasing chamber 3,
The other end of the plug 16 stretch in installation cavity 7 with slide laterally the vertical drive link 17 being arranged in installation cavity 7 and be connected,
The middle part of the vertical drive link 17 is connected with one end of trace 19 by pin 18, and the other end of the trace 19 leads to
Cross the first bearing pin 20 to be rotatably arranged on head pulley 9, the upper end for stretching out pressure release cylinder body 1 in the vertical drive link 17 is provided with
Steel cable limited block 21, the lower end for stretching out pressure release cylinder body 1 in the vertical drive link 17 are provided with lower steel cable limited block 22, described
The upper end of pressure release cylinder body 1 is provided with upper sliding sleeve 23, slides and be provided with the first top shoe 24 in the upper sliding sleeve 23, and described first
One end of top shoe 24 is connected with upper sliding sleeve 23 by upper spring 25, and the other end of first top shoe 24 passes through upper pin
26 are rotated with upper latch segment 27 and be connecteds, and latch segment 27 is interior on described is provided with upper hopper chute 28, one end of upper horizontal drive link 29
It is slidably arranged in upper hopper chute 28 by the second top shoe 30, the other end of the upper horizontal drive link 29 is by upper adjusting nut
31 are connected with the upper end of vertical drive link 17, are equipped with steel cable 32, the upper steel cable on described in steel wire limited block 21
32 one end is stretched into and is connected with the first top shoe 24 in upper sliding sleeve 23, and the other end of the upper steel cable 32 passes through upper leading block
13 are connected with the side of head pulley 9, the lower end of the pressure release cylinder body 1 are provided with low sleeve 33, in the low sleeve 33
Slip is provided with the first sliding block 34, and one end of first sliding block 34 is connected with low sleeve 33 by lower spring 35, institute
The other end for stating the first sliding block 34 is connected with the rotation of lower latch segment 37 by lower bearing pin 36, is arranged in the lower latch segment 37
The one end for having gliding groove 38, lower horizontal drive link 39 is slidably arranged in gliding groove 38 by the second sliding block 40, the lower horizontal stroke
It is connected with the upper end of vertical drive link 17 to the other end of drive link 39 by lower adjusting nut 41, steel wire is spacing on described
Lower steel cable 42 is equipped with block 21, and one end of the lower steel cable 42 is stretched into and is connected with the first sliding block 34 in low sleeve 33, institute
The other end for stating lower steel cable 42 is connected through lower leading block 15 with the opposite side of head pulley 9.
When above-mentioned safe pressure relief device is used, in pressure release cylinder body 1 first is made to position inclined-plane 4 with portable dynamic lifting handle 2
Mutually it coincide with the second positioning inclined-plane 44 in oily nonyl 43, mutually coincide on the first positioning inclined-plane 4 and the second positioning inclined-plane 44
During, adjusting upper latch segment 27 by upper adjusting nut 31 prevents upper latch segment 27 from interfering with oily nonyl 43, by lowering
Section nut 41 adjusts lower latch segment 37 prevents lower latch segment 37 from interfering with oily nonyl 43, now moves downwards rotation handle 11,
Rotating handle 11 drives head pulley 9 to rotate clockwise in middle part rotating shaft 8, and the compression torsion spring 10 of head pulley 9 promotes trace
19 are moved to the left, and the right-hand member of trace 19 is rotated on head pulley 9 simultaneously by the first bearing pin 20, trace 19 another
End promotes vertical drive link 17 to be moved to the left by pin 18, and vertical catch bar 17 promotes plug 16 interior to the left in pressure release cylinder body 1
Slide, vertical drive link 17 promotes upper horizontal drive link 29 and lower horizontal drive link 39 to be moved to the left simultaneously, at the same time, main cunning
Wheel 9 pulls upper leading block 13 to rotate clockwise by upper steel cable 32, and head pulley 9 pulls lower leading block 15 by lower steel cable 42
Rotate counterclockwise, upper steel cable 32 pulls the first top shoe 24 to move right in upper sliding sleeve 23, and the first top shoe 24 is in upper sliding sleeve
Upper spring 25 is compressed in one end in 23, and the other end of the first top shoe 24 pulls upper latch segment 27 to move right by upper pin 26
Dynamic, upper horizontal drive link 29 moves left through the second top shoe 30 and presses latch segment 27, and upper latch segment 27 passes through upper pin
26 also rotate counterclockwise on the first top shoe 24, so that upper latch segment 27 is fastened at the locking step 45 of oily nonyl 43
The upper end of oily nonyl 43 is locked, lower steel cable 42 pulls the first sliding block 34 to move right in low sleeve 33, and first glides
One end compression lower spring 35 of the block 34 in low sleeve 33, the other end of the first sliding block 34 pull lower locking by lower bearing pin 36
Block 37 moves right, and lower horizontal drive link 39 moves left through the second sliding block 40 and presses lower latch segment 37, lower latch segment 37
Also rotated clockwise on the first sliding block 34 by lower bearing pin 36, so that lower latch segment 37 is fastened on the lock of oily nonyl 43
The lower end of oily nonyl 43 is locked at tight step 45, in the left side that oily nonyl 43 is locked, plug 16 promotes the valve element of oily nonyl 43
46 are moved to the left, compression reseting spring 47 to the left of valve element 46, and now the passage 48 of oily nonyl 43 is opened, the passage 48 of oily nonyl 43 with
The pressure-releasing chamber 3 of pressure release cylinder body 1 is interconnected, and pressure release cylinder body 1 is locked by upper latch segment 27 and the oily nonyl 43 of lower latch segment 37 pairs
The passage 48 of tight same time oil nonyl 43 is opened, and the hydraulic oil in oily nonyl 43 is entered in pressure-releasing chamber 3 by passage 48, is entered
Hydraulic oil in pressure-releasing chamber 3 is discharged so as to realizing the pressure release to oily nonyl 43 by oil leak hole 6.After the completion of pressure release, unclamp and rotate handss
Handle 11, the spinning reduction counterclockwise under the bounce-back of torsion spring 10 of head pulley 9, the first top shoe 24 are resetted by upper spring 25,
First top shoe 24 pulls 13 rotate counterclockwise of upper leading block to reset by upper steel cable 32, and the first sliding block 34 passes through lower spring
35 reset, and the first sliding block 35 pulls lower leading block 15 to turn clockwise reset, at the same time, head pulley by lower steel cable 42
9 pulling traces 19 move right resets, and the right-hand member of trace 19 occurs on head pulley 9 turn simultaneously by the first bearing pin 20
Dynamic, the other end of trace 19 pulls vertical drive link 17 to move right resets by pin 18, and vertical drive link 17 is while drawing
Dynamic horizontal drive link 29 and lower horizontal drive link 39 move right reset, and upper horizontal drive link 29 moves right by second
Slide block 30 pulls upper latch segment 27, upper latch segment 27 also to rotate clockwise on the first top shoe 24 by upper pin 26,
So that upper latch segment 27 is separated with the locking step 45 of oily nonyl 43, lower horizontal drive link 39 moves right by the second sliding block
40 pull lower latch segment 37, lower latch segment 37 also to rotate counterclockwise on the first sliding block 34 by lower bearing pin 36, so as to
Lower latch segment 37 is made to separate with the locking step 45 of oily nonyl 43, at the same time, vertical catch bar 17 pulls plug 16 in pressure release cylinder
Sliding to the right to reset in body 1 makes plug 16 separate with the valve element 46 of oily nonyl 43, the work of the valve element 46 of oily nonyl 43 in back-moving spring 47
The passage 48 of oily nonyl 43 is closed with lower reset, the dismounting of pressure relief device is completed.
Above-mentioned safe pressure relief device, compact conformation, small volume be lightweight, carries, easy to operate, reduces staff
Labor intensity, while locking pressure release can be carried out to well-control equipment oil circuit oil nonyl, pressure release is safe and reliable, is prevented from pipeline
Hydraulic oil four sides is sprayed, and protects the environment of surrounding and the safety of staff, and using effect is good.
Claims (1)
1. safe pressure relief device, it is characterised in that：Including：Pressure release cylinder body（1）Be arranged on pressure release cylinder body（1）The lifting handss of upper end
Handle（2）, in the pressure release cylinder body（1）Interior side is provided with pressure-releasing chamber（3）With the first positioning inclined-plane（4）, fixed described first
Position inclined-plane（4）Sealing gasket is inside provided with（5）, in the pressure release cylinder body（1）On be provided with and pressure-releasing chamber（3）The draining being interconnected
Hole（6）, in the pressure release cylinder body（1）Internal opposite side is provided with installation cavity（7）, in the installation cavity（7）Interior by middle part turn
Axle（8）Rotation is provided with head pulley（9）, the head pulley（9）By torsion spring（10）With pressure release cylinder body（1）It is connected,
The head pulley（9）On be provided with rotation handle（11）, in the head pulley（9）The installation cavity of upper end（7）Interior by upper rotating shaft
（12）Rotation is provided with leading block（13）, in the head pulley（9）The installation cavity of lower end（7）Interior by lower rotary shaft（14）Turn
Move and be provided with lower leading block（15）, in the pressure release cylinder body（1）Middle part slide be provided with plug（16）, in the plug
（16）With pressure release cylinder body（1）Between be provided with sealing ring（161）, the plug（16）One end stretch into pressure-releasing chamber（3）Interior, described
Plug（16）The other end stretch into installation cavity（7）Interior installation cavity is arranged on sliding laterally（7）Interior vertical drive link（17）Phase
Connection, the vertical drive link（17）Middle part pass through pin（18）With trace（19）One end be connected, the trace
（19）The other end pass through the first bearing pin（20）It is rotatably arranged on head pulley（9）On, in the vertical drive link（17）Stretch out and let out
Cylinder pressure body（1）Upper end be provided with steel cable limited block（21）, in the vertical drive link（17）Stretch out pressure release cylinder body（1）Under
End is provided with lower steel cable limited block（22）, in the pressure release cylinder body（1）Upper end be provided with upper sliding sleeve（23）, in the upper sliding sleeve
（23）Interior slip is provided with the first top shoe（24）, first top shoe（24）One end by upper spring（25）With upper sliding sleeve
（23）It is connected, first top shoe（24）The other end pass through upper pin（26）With upper latch segment（27）Connection is rotated,
The upper latch segment（27）Upper hopper chute is inside provided with（28）, upper horizontal drive link（29）One end pass through the second top shoe（30）Sliding
Move and be arranged on upper hopper chute（28）Interior, the upper horizontal drive link（29）The other end by upper adjusting nut（31）With vertical transmission
Bar（17）Upper end be connected, steel wire limited block on described（21）Steel cable is inside equipped with（32）, the upper steel cable（32）'s
Stretch into upper sliding sleeve in one end（23）Interior and the first top shoe（24）It is connected, the upper steel cable（22）The other end through upper be oriented to slide
Wheel（13）With head pulley（9）Side be connected, in the pressure release cylinder body（1）Lower end be provided with low sleeve（33）, described
Low sleeve（33）Interior slip is provided with the first sliding block（34）, first sliding block（34）One end pass through lower spring（35）With
Low sleeve（33）It is connected, first sliding block（34）The other end pass through lower bearing pin（36）With lower latch segment（37）The company of rotation
Connect, in the lower latch segment（37）Gliding groove is inside provided with（38）, lower horizontal drive link（39）One end pass through the second sliding block
（40）It is slidably arranged in gliding groove（38）Interior, the lower horizontal drive link（39）The other end by lower adjusting nut（41）With perpendicular
To drive link（17）Upper end be connected, steel wire limited block on described（21）Lower steel cable is inside equipped with（42）, the lower steel cable
（42）One end stretch into low sleeve（33）Interior and the first sliding block（34）It is connected, the lower steel cable（42）The other end pass through down
Leading block（15）With head pulley（9）Opposite side be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710013681.9A CN106499866B (en) | 2017-01-09 | 2017-01-09 | Safe pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710013681.9A CN106499866B (en) | 2017-01-09 | 2017-01-09 | Safe pressure relief device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106499866A true CN106499866A (en) | 2017-03-15 |
| CN106499866B CN106499866B (en) | 2018-10-12 |
Family
ID=58345205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710013681.9A Active CN106499866B (en) | 2017-01-09 | 2017-01-09 | Safe pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106499866B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115240965A (en) * | 2022-08-04 | 2022-10-25 | 国网安徽省电力有限公司滁州市城郊供电公司 | Fuse is used in transformer protection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0599080A1 (en) * | 1992-11-26 | 1994-06-01 | KM-SCHMÖLE GmbH | Residual pressure valve |
| JPH109358A (en) * | 1996-06-28 | 1998-01-13 | Nippon Light Metal Co Ltd | Drive device for operating shaft |
| CN2818943Y (en) * | 2005-07-09 | 2006-09-20 | 湖南湘安特种电磁阀有限公司 | Manual piston cut-off valve |
| CN202249896U (en) * | 2011-09-16 | 2012-05-30 | 东营万邦石油科技有限责任公司 | Pressure-relieving safety protector |
| CN206429738U (en) * | 2017-01-09 | 2017-08-22 | 盐城市大冈石油工具厂有限责任公司 | Safe pressure relief device |
-
2017
- 2017-01-09 CN CN201710013681.9A patent/CN106499866B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0599080A1 (en) * | 1992-11-26 | 1994-06-01 | KM-SCHMÖLE GmbH | Residual pressure valve |
| JPH109358A (en) * | 1996-06-28 | 1998-01-13 | Nippon Light Metal Co Ltd | Drive device for operating shaft |
| CN2818943Y (en) * | 2005-07-09 | 2006-09-20 | 湖南湘安特种电磁阀有限公司 | Manual piston cut-off valve |
| CN202249896U (en) * | 2011-09-16 | 2012-05-30 | 东营万邦石油科技有限责任公司 | Pressure-relieving safety protector |
| CN206429738U (en) * | 2017-01-09 | 2017-08-22 | 盐城市大冈石油工具厂有限责任公司 | Safe pressure relief device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115240965A (en) * | 2022-08-04 | 2022-10-25 | 国网安徽省电力有限公司滁州市城郊供电公司 | Fuse is used in transformer protection |
| CN115240965B (en) * | 2022-08-04 | 2023-04-11 | 国网安徽省电力有限公司滁州市城郊供电公司 | Fuse is used in transformer protection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106499866B (en) | 2018-10-12 |
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