CN106499866B - Safe pressure relief device - Google Patents

Safe pressure relief device Download PDF

Info

Publication number
CN106499866B
CN106499866B CN201710013681.9A CN201710013681A CN106499866B CN 106499866 B CN106499866 B CN 106499866B CN 201710013681 A CN201710013681 A CN 201710013681A CN 106499866 B CN106499866 B CN 106499866B
Authority
CN
China
Prior art keywords
pressure release
cylinder body
release cylinder
drive link
interior
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.)
Active
Application number
CN201710013681.9A
Other languages
Chinese (zh)
Other versions
CN106499866A (en
Inventor
顾国才
杨保章
杨传还
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YANCHENG DAGANG PETROLEUM TOOLS FACTORY CO Ltd
Original Assignee
YANCHENG DAGANG PETROLEUM TOOLS FACTORY CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by YANCHENG DAGANG PETROLEUM TOOLS FACTORY CO Ltd filed Critical YANCHENG DAGANG PETROLEUM TOOLS FACTORY CO Ltd
Priority to CN201710013681.9A priority Critical patent/CN106499866B/en
Publication of CN106499866A publication Critical patent/CN106499866A/en
Application granted granted Critical
Publication of CN106499866B publication Critical patent/CN106499866B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/44Mechanical actuating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift 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

Landscapes

  • 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 devices, including:Pressure release cylinder body and the lifting handle in pressure release cylinder body upper end is set, pressure release cylinder interior side is provided with pressure-releasing chamber and the first positioning inclined-plane, it is provided with gasket in first positioning inclined-plane, the oil leak hole being interconnected with pressure-releasing chamber is provided on the pressure release cylinder body, the pressure release cylinder interior other side is provided with installation cavity, head pulley is provided with by the rotation of middle part shaft in the installation cavity, the head pulley is connected by torsion spring with pressure release cylinder body, it is provided with rotational handle on the head pulley, upper leading block is provided with by the rotation of upper shaft in the installation cavity of the head pulley upper end, lower leading block is provided with by lower rotary shaft rotation in the installation cavity of the head pulley lower end, at the middle part of the pressure release cylinder body, sliding is provided with plug.

Description

Safe pressure relief device
Technical field
The present invention relates to a kind of well control control equipment more particularly to a kind of safe pressure relief devices.
Background technology
Pressure relief device is the key device of pressure release in well-control equipment maintenance process, is mainly used for preventer oil circuit oil nonyl, control The pressure release of the well-control equipments 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 occur must to carry out the repair of well-control equipment for efficiently controlling well kick or gas blowout accident in special circumstances, in order to ensure The pressure security pressure release of oil line pipe in maintenance process, carrying out pressure release using a kind of safe pressure relief device is particularly important.Mesh Preceding is all to use the elastic operation of big pipe vice, big pipe vice big and heavy and difficult during repairing pressure release to oil line pipe operation It to carry, carries, is inconvenient for operation, while the hydraulic oil in operation repair pressure leak process in pipeline can spray on four sides, pollute 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.
Invention content
The technical problem to be solved by the present invention is to:A kind of safe pressure relief device that using effect is good is provided.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is:Safe pressure relief device, including:Pressure release cylinder Body and the lifting handle in pressure release cylinder body upper end is set, pressure release cylinder interior side is provided with pressure-releasing chamber and the first positioning Inclined-plane is provided with gasket in first positioning inclined-plane, is provided on the pressure release cylinder body and is interconnected with pressure-releasing chamber Oil leak hole, the pressure release cylinder interior other side is provided with installation cavity, is rotated by middle part shaft in the installation cavity It is provided with head pulley, the head pulley is connected by torsion spring with pressure release cylinder body, and rotation is provided on the head pulley Handle is provided with upper leading block, under the head pulley in the installation cavity of the head pulley upper end by the rotation of upper shaft Lower leading block is provided with by lower rotary shaft rotation in the installation cavity at end, sliding is provided with core at the middle part of the pressure release cylinder body Stick is provided with sealing ring between the plug and pressure release cylinder body, and one end of the plug is stretched into pressure-releasing chamber, the plug The other end stretch into installation cavity with slide laterally the vertical drive link being arranged in installation cavity and be connected, the vertical drive link Middle part is connected by pin with one end of interlocking lever, and the other end of the interlocking lever is rotatably arranged on main cunning by the first axis pin On wheel, the upper end that the vertical drive link stretches out pressure release cylinder body is provided with upper steel cable limited block, is stretched 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 Sliding is provided with the first top shoe in sliding sleeve, and one end of first top shoe is connected by upper spring with upper sliding sleeve, described The other end of first top shoe is rotatablely connected by upper pin and upper latch segment, and upper hopper chute is provided in the upper latch segment, One end of upper transverse direction drive link is slidably arranged in by the second top shoe in upper hopper chute, and the other end of the upper lateral drive link is logical Cross adjusting nut with the upper end of vertical drive link to be connected, be equipped with upper steel cable in the upper steel wire limited block, it is described on One end of steel cable is stretched into upper sliding sleeve to be connected with the first top shoe, and the other end of the upper steel cable passes 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, in the low sleeve sliding be provided with the One end of one sliding block, first sliding block is connected by lower spring with low sleeve, the other end of first sliding block It is rotatablely connected by lower bearing pin and lower latch segment, gliding groove, one end of lower transverse direction drive link is provided in the lower latch segment Be slidably arranged in gliding groove by the second sliding block, the other end of the lower lateral drive link by lower adjusting nut with it is vertical The upper end of drive link is connected, and lower steel cable is equipped in the upper steel wire limited block, and downslide is stretched into 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 across lower leading block with the other side of head pulley It connects.
It is an advantage of the invention that:Above-mentioned safe pressure relief device, it is compact-sized, it is small, it is light-weight, it carries, is easy to operate, The labor intensity of staff is reduced, while locking pressure release can be carried out to well-control equipment oil circuit oil nonyl, pressure release is safe and reliable, energy It enough prevents the hydraulic oil four sides in pipeline from spraying, protects the environment of surrounding and the safety of staff, using effect good.
Description of the drawings
Fig. 1 is the structural schematic diagram of safe pressure relief device of the present invention.
Structural schematic diagram when Fig. 2 is safe pressure relief device pressure release of the present invention.
In figure:1, pressure release cylinder body, 2, lifting handle, 3, pressure-releasing chamber, the 4, first positioning inclined-plane, 5, gasket, 6, oil leak hole, 7, installation cavity, 8, middle part shaft, 9, head pulley, 10, torsion spring, 11, rotational handle, 12, upper shaft, 13, upper leading block, 14, lower rotary shaft, 15, lower leading block, 16, plug, 161, sealing ring, 17, vertical drive link, 18, pin, 19, interlocking lever, 20, the first axis 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 lateral drive link, the 30, second top shoe, 31, upper adjusting 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 Slot, 39, lower lateral 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, spool, 47, resetting spring, 48, channel.
Specific implementation mode
The particular content of the present invention is described in detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, safe pressure relief device, including:Pressure release cylinder body 1 and the lifting handle in 1 upper end of pressure release cylinder body is set 2,1 interior side of pressure release cylinder body is provided with pressure-releasing chamber 3 and first and positions inclined-plane 4, is set in first positioning inclined-plane 4 It is equipped with gasket 5, the oil leak hole 6 being interconnected with pressure-releasing chamber 3 is provided on the pressure release cylinder body 1, in the pressure release cylinder body 1 The internal other side is provided with installation cavity 7, and the rotation of middle part shaft 8 is provided with head pulley 9, the master in the installation cavity 7 Pulley 9 is connected by torsion spring 10 with pressure release cylinder body 1, and rotational handle 11 is provided on the head pulley 9, in the master Upper leading block 13 is provided with by the rotation of upper shaft 12 in the installation cavity 7 of 9 upper end of pulley, the peace in 9 lower end of the head pulley It behave affectedly in 7 and lower leading block 15 is provided with by the rotation of lower rotary shaft 14, sliding is provided with plug at the middle part of the pressure release cylinder body 1 16, sealing ring 161 is provided between the plug 16 and pressure release cylinder body 1, one end of the plug 16 is stretched into pressure-releasing chamber 3, The other end of the plug 16 stretch into 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 by pin 18 with one end of interlocking lever 19, and the other end of the interlocking lever 19 is logical It crosses the first axis pin 20 to be rotatably arranged on head pulley 9, the upper end that pressure release cylinder body 1 is stretched out in the vertical drive link 17 is provided with Steel cable limited block 21, the lower end that pressure release cylinder body 1 is stretched out in the vertical drive link 17 is 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, is slided in the upper sliding sleeve 23 and is provided with the first top shoe 24, and described first One end of top shoe 24 is connected by upper spring 25 with upper sliding sleeve 23, and the other end of first top shoe 24 passes through upper pin 26 are rotatablely connected with upper latch segment 27, and upper hopper chute 28, one end of upper transverse direction drive link 29 are provided in the upper latch segment 27 It is slidably arranged in upper hopper chute 28 by the second top shoe 30, the other end of the upper lateral drive link 29 passes through upper adjusting nut 31 are connected with the upper end of vertical drive link 17, and upper steel cable 32, the upper steel cable are equipped in the upper steel wire limited block 21 32 one end is stretched into upper sliding sleeve 23 to be connected with the first top shoe 24, 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 Sliding is provided with the first sliding block 34, and one end of first sliding block 34 is connected by lower spring 35 with low sleeve 33, institute The other end for stating the first sliding block 34 is rotatablely connected by lower bearing pin 36 and lower latch segment 37, the setting in the lower latch segment 37 There are gliding groove 38, one end of lower transverse direction drive link 39 to be slidably arranged in gliding groove 38 by the second sliding block 40, the lower cross It is connected to the other end of drive link 39 with the upper end of vertical drive link 17 by lower adjusting nut 41, is limited in the upper steel wire Lower steel cable 42 is equipped in block 21, one end of the lower steel cable 42 is stretched into low sleeve 33 to be connected with the first sliding block 34, institute The other end for stating lower steel cable 42 is connected across lower leading block 15 with the other side of head pulley 9.
Above-mentioned safe pressure relief device with portable dynamic lifting handle 2 in use, make first in pressure release cylinder body 1 to position inclined-plane 4 It mutually coincide with the second positioning inclined-plane 44 in oily nonyl 43, mutually identical on the first positioning inclined-plane 4 and second positioning inclined-plane 44 In the process, adjusting upper latch segment 27 by upper adjusting nut 31 prevents upper latch segment 27 from being interfered with oily nonyl 43, passes through downward Section nut 41, which adjusts lower latch segment 37, prevents lower latch segment 37 from being interfered with oily nonyl 43, moves rotational handle 11 downwards at this time, Rotational handle 11 drives head pulley 9 to be rotated clockwise in middle part shaft 8, and head pulley 9 compresses torsion spring 10 and pushes interlocking lever 19 are moved to the left, and the right end of interlocking lever 19 is rotated by the first axis pin 20 on head pulley 9 simultaneously, interlocking lever 19 it is another End by pin 18 pushes vertical drive link 17 to be moved to the left, the promotion plug 16 of vertical catch bar 17 in pressure release cylinder body 1 to the left Sliding, vertical drive link 17 push upper lateral drive link 29 and lower lateral 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 It rotates 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 The upper spring 25 of one end compression in 23, the other end of the first top shoe 24 pull upper latch segment 27 to move right by upper pin 26 Dynamic, upper transverse direction 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, to make upper latch segment 27 be 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 The other end of spring 35 under one end compression of the block 34 in low sleeve 33, the first sliding block 34 pulls lower locking by lower bearing pin 36 Block 37 moves right, and lower transverse direction drive link 39 moves left through the second sliding block 40 and presses lower latch segment 37, lower latch segment 37 It is also rotated clockwise on the first sliding block 34 by lower bearing pin 36, to make lower latch segment 37 be 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 locked to oily nonyl 43, plug 16 pushes the spool of oily nonyl 43 46 are moved to the left, compression reseting spring 47 to the left of spool 46, and the channel 48 of oily nonyl 43 is opened at this time, the channel 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 locks oily nonyl 43 by upper latch segment 27 and lower latch segment 37 The channel 48 of tight same time oil nonyl 43 is opened, and the hydraulic oil in oily nonyl 43 is entered by channel 48 in pressure-releasing chamber 3, enters Hydraulic oil in pressure-releasing chamber 3 is discharged to realize the pressure release to oily nonyl 43 by oil leak hole 6.After the completion of pressure release, rotation hand is unclamped Handle 11, the spinning reduction counterclockwise under the rebound 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 spinning reduction counterclockwise of upper leading block, the first sliding block 34 to pass through lower spring by upper steel cable 32 35 reset, and the first sliding block 35 pulls lower leading block 15 to rotate clockwise reset by lower steel cable 42, at the same time, head pulley 9 pulling interlocking levers 19 move right resets, and the right end of interlocking lever 19 is occurred by the first axis pin 20 on head pulley 9 turn simultaneously Dynamic, the other end of interlocking lever 19 pulls vertical drive link 17 to move right reset by pin 18, and vertical drive link 17 is drawn simultaneously Dynamic lateral drive link 29 and lower lateral drive link 39 move right resets, and upper lateral drive link 29 moves right by second Sliding block 30 pulls upper latch segment 27, upper latch segment 27 also to be rotated clockwise on the first top shoe 24 by upper pin 26, To make upper latch segment 27 and the locking step 45 of oily nonyl 43 detach, lower transverse direction drive link 39 moves right through the second sliding block 40 pull lower latch segment 37, lower latch segment 37 also to be rotated counterclockwise on the first sliding block 34 by lower bearing pin 36, to Lower latch segment 37 and the locking step 45 of oily nonyl 43 is set to detach, at the same time, vertical catch bar 17 pulls plug 16 in pressure release cylinder Sliding to the right, which resets, in body 1 makes plug 16 and the spool 46 of oil nonyl 43 detach, the work of the spool 46 of oily nonyl 43 in resetting spring 47 With the lower channel 48 for resetting closing oil nonyl 43, the dismounting of pressure relief device is completed.
Above-mentioned safe pressure relief device, it is compact-sized, it is small, it is light-weight, it carries, is easy to operate, reducing staff's Labor intensity, while locking pressure release can be carried out to well-control equipment oil circuit oil nonyl, pressure release is safe and reliable, can prevent in pipeline Hydraulic oil four sides is sprayed, and protects the environment of surrounding and the safety of staff, using effect good.

Claims (1)

1. safe pressure relief device, it is characterised in that:Including:Pressure release cylinder body(1)With setting in pressure release cylinder body(1)The promotion hand 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)Inside it is provided with gasket(5), in the pressure release cylinder body(1)On be provided with and pressure-releasing chamber(3)Interconnected draining Hole(6), in the pressure release cylinder body(1)The internal other side is provided with installation cavity(7), in the installation cavity(7)It is interior to be turned by middle part Axis(8)Rotation is provided with head pulley(9), the head pulley(9)Pass through torsion spring(10)With pressure release cylinder body(1)It is connected, The head pulley(9)On be provided with rotational handle(11), in the head pulley(9)The installation cavity of upper end(7)It is interior to pass through upper shaft (12)Rotation is provided with leading block(13), in the head pulley(9)The installation cavity of lower end(7)Inside pass through lower rotary shaft(14)Turn It is dynamic to be provided with lower leading block(15), in the pressure release cylinder body(1)Middle part sliding 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)It is interior, it is described Plug(16)The other end stretch into installation cavity(7)It is interior with slide laterally be arranged in installation cavity(7)Interior vertical drive link(17)Phase Connection, the vertical drive link(17)Middle part pass through pin(18)With interlocking lever(19)One end be connected, the interlocking lever (19)The other end pass through the first axis pin(20)It is rotatably arranged on head pulley(9)On, in the vertical drive link(17)Stretching is 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 sliding is provided with the first top shoe(24), first top shoe(24)One end pass through it is 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)Rotation connection, in the upper latch segment(27)Inside it is provided with upper hopper chute(28), upper transverse direction drive link(29)One end pass through Second top shoe(30)It is slidably arranged in upper hopper chute(28)It is interior, the upper lateral drive link(29)The other end pass through upper adjusting spiral shell It is female(31)With vertical drive link(17)Upper end be connected, in the upper steel wire limited block(21)Inside it is equipped with steel cable(32), The upper steel cable(32)One end stretch into upper sliding sleeve(23)Interior and the first top shoe(24)It is connected, the upper steel cable(32)It is another One end passes through upper leading block(13)With head pulley(9)Side be connected, in the pressure release cylinder body(1)Lower end be provided with down Sliding sleeve(33), in the low sleeve(33)Interior sliding 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 under Latch segment(37)Rotation connection, in the lower latch segment(37)Inside it is provided with gliding groove(38), lower transverse direction drive link(39)One End passes through the second sliding block(40)It is slidably arranged in gliding groove(38)It is interior, the lower lateral drive link(39)The other end pass through under Adjusting nut(41)With vertical drive link(17)Upper end be connected, in the upper steel wire limited block(21)Inside it is equipped with lower steel cable (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 lower leading block(15)With head pulley(9)The other side be connected.
CN201710013681.9A 2017-01-09 2017-01-09 Safe pressure relief device Active CN106499866B (en)

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 CN106499866A (en) 2017-03-15
CN106499866B true 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)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4239717C1 (en) * 1992-11-26 1994-01-05 Schmoele Gmbh Km Residual pressure valve
JP3454022B2 (en) * 1996-06-28 2003-10-06 日本軽金属株式会社 Actuator drive
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

Also Published As

Publication number Publication date
CN106499866A (en) 2017-03-15

Similar Documents

Publication Publication Date Title
CN106499866B (en) Safe pressure relief device
CN206605097U (en) A kind of handware cutting equipment
CN105089542B (en) Hydraulic pressure self-locking Fast Installation blowout hookup and method
CN105064930A (en) Hydraulic lifting sub capable of overturning automatically
CN206429738U (en) Safe pressure relief device
CN111764843A (en) Novel hydraulic overturning elevator
CN106481183A (en) A kind of automatic-sealed switching mechanism
CN204941383U (en) Hydraulic pressure automatic turning elevator
CN108412447A (en) Wellhead device for emergency of out-of-control blowout of oil and gas well
CN206309195U (en) A kind of automatic-sealed switching mechanism
CN206091919U (en) Simple pressurized wellhead plugging device
CN204386552U (en) The manual blowout preventer pressure-testing packer in a kind of down-hole
CN201306119Y (en) Pressurized petroleum wellhead driller
CN106090415B (en) Anti-theft device and angular travel valve
CN213269833U (en) Blowout preventer ram valve control device
CN205371773U (en) Relief valve actuator
CN203321407U (en) Christmas tree cap
CN209670779U (en) One kind just entering and leaving closed guard gate
CN204941382U (en) Valve elevator Automated condtrol mechanism
CN205025385U (en) A lock cardboard device voluntarily for finger
CN202007645U (en) Manual locking device for hydraulic control blowout preventer
CN205876847U (en) Hand liquid gas controlling means with interlock function
CN206385590U (en) A kind of excavator quick connector
CN203813293U (en) Electrical machine cabinet
CN104373061A (en) Rotary telescopic door mechanical elevator

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant