CN207348688U - Closed shield door in cell under a kind of heap - Google Patents
Closed shield door in cell under a kind of heap Download PDFInfo
- Publication number
- CN207348688U CN207348688U CN201721127102.5U CN201721127102U CN207348688U CN 207348688 U CN207348688 U CN 207348688U CN 201721127102 U CN201721127102 U CN 201721127102U CN 207348688 U CN207348688 U CN 207348688U
- Authority
- CN
- China
- Prior art keywords
- door
- plate
- doorframe
- seal ring
- heap
- 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
Links
Landscapes
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
The utility model belongs to nuclear engineering special type facility technology field, more particularly to closed shield door in cell under a kind of heap, it is arranged under the heap below reactor pit on cell, the doorframe (1) and door-plate (2) to link together including the linkage (5) by being arranged on side, the door-plate (2) is equipped with sealing ring, the doorframe (1), door-plate (2) are equipped with retaining mechanism (3), wherein described sealing ring is the adjustable Double seal ring of decrement, and the retaining mechanism (3) is equipped with multiple locking points.Using closed shield door in cell under heap described in the utility model, sealing ring decrement can be adjusted, it ensure that sealing effect, linkage (5) can also bear radial direction heavy load and impact load tool, meet pressure bearing and seal, shock resistance, security requirement, the locking safety and reliability of multiple locking promise closed shield doors.
Description
Technical field
The utility model belongs to nuclear engineering special type facility technology field, and in particular to closed shield door in cell under a kind of heap.
Background technology
Cell is located at the underface of reactor pit under heap, it is necessary to relevant device in reactor maintenance and operational process
And staff enters, and a part of the cell shield door as chamber pressure border under heap under heap is required, can born each
Load (temperature, the pressure of kind design basis accident (such as the surface application of reactor pit steel ruptures, and water enters cell under heap)
Deng), ensure the leakproofness and security of the cell under heap when reactor pit ruptures.
Utility model content
The purpose of this utility model is to provide a kind of shield door for being used for cell under heap.The shield door possesses cell under heap will
The pressure bearing and seal asked, shock resistance, security；It is capable of providing the passage of equipment and personnel's disengaging；Compact-sized, function is reliably just
In operation.
To achieve the above objectives, the technical solution adopted in the utility model is：Closed shield door in cell under a kind of heap, is set
Under the heap below reactor pit on cell, including the doorframe and door to be linked together by being arranged on the linkage of side
Plate, the door-plate are equipped with sealing ring, and the doorframe, door-plate are equipped with retaining mechanism, wherein, the sealing ring can for decrement
The Double seal ring of adjustment, the retaining mechanism are equipped with multiple locking points.
Further, the doorframe, door-plate are the rectangular configuration being adapted to each other, and the linkage is located at the doorframe, door
On the inner surface of plate, when the linkage is in closure state, the edge of the outer surface of the door-plate is interior with the doorframe
Surface is in contact；The Double seal ring includes inner seal ring and exterior seal ring, on the edge for the outer surface for being arranged on the door-plate,
The inner seal ring is located on the inside of the exterior seal ring, and the inner seal ring, exterior seal ring are on each edge of the door-plate
It is to be arranged in parallel.
Further, first step is equipped with the edge of the outer surface of the door-plate, the inner seal ring, exterior seal ring are set
Put on the first step；The second step being adapted with the first step is equipped with the inner surface of the doorframe；Work as institute
When stating linkage and being in closure state, the first step, second step close mutually, by the inner seal ring, outer close
The sealing between the doorframe, door-plate is realized in seal.
Further, set on the first step of the door-plate it is fluted, if the inside grooves are uniformly arranged
The dry pressing plate for carrying fastener, the fastener can be fixed on the door-plate, and the pressing plate is by the inner seal ring, outer
Sealing ring is arranged on the inside both sides of the groove, and is fixed and compresses by fastener, the inner seal ring, external seal
The annular cavity of closure is formed between circle.
Further, on the outer surface of the doorframe, equipped with a side leakage hole, the hole of leaking hunting is fixedly mounted on the door
On frame, the hole of leaking hunting is located on the cavity that the inner seal ring is formed with the exterior seal ring, when the door-plate, doorframe
During closure, by detecting the leakproofness of the sealing ring from the hole of leaking hunting to the empty interacvity air-filling.
Further, the retaining mechanism is arranged on the outer surface of the door-plate, including the deceleration commutator equipped with handwheel,
The deceleration commutator both ends respectively connect a ball screw assembly, and two connecting rods are symmetrically connected on each ball screw assembly,
Two push rods are connected on the every connecting rod, the push rod is set on the door-plate by being oriented to, and the push rod can be
Straight reciprocating motion is done in the guide sleeve, described push rod one end is connected on the connecting rod, and the other end is proximal and perpendicular to institute
State the edge of door-plate；Further include and be arranged on the doorframe, be a pair of with the one end one at the close door-plate edge of the push rod
The locking bed answered；The deceleration commutator is driven to drive the ball-screw secondary motion, the ball when the handwheel rotates
Lead screw pair drives the connecting rod to flex outward, so as to drive the one end at the close door-plate edge of push rod to be moved to the doorframe
And the locking bed is compressed, the locking point is formed, realizes that the sealing between the door-plate and the doorframe is closed；When the hand
Wheel drives the deceleration commutator to drive the ball screw assembly, counter motion when reversely rotating, the ball screw assembly, drives institute
Connecting rod is stated to shrink inwards, so that drive push rod to be translated to the direction away from the doorframe and release the compression to the locking bed,
Realize the releasing that the sealing between the door-plate and the doorframe is closed.
Further, the push rod is symmetricly set on the position at the edge of the door-plate.
Further, the sealing ring decrement adjustment be by adjusting the push rod in the retaining mechanism with it is described
Crush between locking bed is realized.
Further, the linkage include be bolted on the door-plate, the door plate hinge seat equipped with axis pin,
The doorframe upper hinge seat being bolted on the doorframe, doorframe lower hinge seat are further included, both ends are separately positioned on described
Hinge axis on doorframe upper hinge seat, doorframe lower hinge seat, the hinge axis middle part is arranged with radial ball bearing, described centripetal
The first double-row self-aligning roller bearing and the rolling of the second double-row self-aligning are arranged with the axis body of the hinge axis at ball bearing both ends respectively
Sub- bearing, further includes both ends and is separately positioned on the axis pin, the hinge-rod on hinge axis, the door-plate is using the hinge axis in
The heart is rotarily opened and closed.
The beneficial effects of the utility model have it is following some：
1. can be by the leakproofness for the hole inflation detection Double seal ring that leaks hunting, and can be adjusted and sealed according to detection case
Decrement is enclosed, ensure that the sealing effect of closed shield door in cell under heap；
2. 8 locking points, the locking safety and reliability of closed shield door, the connecting rod of retaining mechanism are provided with retaining mechanism
Driven using ball-screw, it is simple to operate；
3. being provided with two double-row self-aligning roller bearings and a radial ball bearing on linkage, radially weight can be born
Load and impact load and axial direction load, meet the pressure bearing and seal of closed shield door, shock resistance, security requirement；
Hinge-rod is rotated around three above bearing at the same time so that the keying operation of closed shield door is lighter, flexible.
Brief description of the drawings
Fig. 1 is the structure diagram of closed shield door in cell under heap described in the utility model embodiment；
Fig. 2 is the A-A views of Fig. 1；
Fig. 3 is the partial enlarged view at the B in Fig. 2；Show inner seal ring, exterior seal ring and pressing plate, the position of fastener
Put relation；
Fig. 4 is the signal of the linkage of cell closed shield door under heap described in the utility model embodiment
Figure；
Fig. 5 is the signal of the retaining mechanism of cell closed shield door under heap described in the utility model embodiment
Figure；
In figure：1- doorframes, 2- door-plates, 3- retaining mechanisms, 4- leak hunting hole, 5- linkages, 6- inner seal rings, 7- pressing plates,
8- fasteners, 9- exterior seal rings, 10- door plate hinge seats, 11- axis pins, 12- hinge-rods, 13- doorframe upper hinge seats, 14- hinges
Axis, the first double-row self-aligning roller bearings of 15-, 16- radial ball bearings, the second double-row self-aligning roller bearings of 17-, cut with scissors under 18- doorframes
Chain seat, 19- push rods, 20- locking beds, 21- connecting rods, 22- ball screw assembly,s, 23- deceleration commutators, 24- handwheels, 25- guide holders.
Embodiment
The utility model is further described with reference to the accompanying drawings and examples.
As shown in Figure 1 and Figure 2, closed shield door in cell under a kind of heap, is arranged on cell under the heap below reactor pit
On, including doorframe 1, door-plate 2, sealing ring, retaining mechanism 3, linkage 5 etc..
Wherein, linkage 5 is arranged on the common side of doorframe 1 and door-plate 2, and doorframe 1 and door-plate 2 are connected to one
Rise.Sealing ring is arranged on door-plate 2, and retaining mechanism 3 is arranged on doorframe 1, on door-plate 2, and wherein sealing ring is Double seal ring, and
Decrement can adjust；Retaining mechanism 3 is equipped with multiple locking points.
Doorframe 1, door-plate 2 are the rectangular configuration being adapted to each other, and linkage 5 is located at (court on the inner surface of doorframe 1, door-plate 2
To the one side of reactor pit), when linkage 5 is in closure state, the outer surface (one away from reactor pit of door-plate 2
Face, the outer surface of doorframe are also the one side away from reactor pit) edge be in contact with the inner surface of doorframe 1.
Double seal ring includes inner seal ring 6 and exterior seal ring 9, is arranged on (the appearance with doorframe 1 of the outer surface of door-plate 2
Face edge is in contact) on edge.As shown in figure 3, first step, inner seal ring are equipped with the edge of the outer surface of door-plate 2
6th, exterior seal ring 9 is arranged on first step；The second step being adapted with first step is equipped with the inner surface of doorframe 1；When
When linkage 5 is in closure state, first step, second step close mutually, are realized by inner seal ring 6, exterior seal ring 9
Sealing between doorframe 1, door-plate 2.
As shown in figure 3, being set on the first step of door-plate 2 fluted, inside grooves set several to carry fastener 8
Pressing plate 7, pressing plate 7 and fastener 8 are uniformly laid in groove.Wherein, fastener 8 can be fixed on door-plate 2, pressing plate 7
Inner seal ring 6, exterior seal ring 9 are arranged on to the inside both sides of groove, and by fastener 8 to inner seal ring 6, exterior seal ring 9
It is fixed and compresses.Inner seal ring 6 is located at the inner side of exterior seal ring 9, and inner seal ring 6, exterior seal ring 9 are on each side of door-plate 2
It is to be arranged in parallel on edge, the annular cavity of closure is formed between inner seal ring 6, exterior seal ring 9.
As shown in Figure 1, on the outer surface of doorframe 1, equipped with a side leakage hole 4, hole 4 of leaking hunting is fixedly mounted on doorframe 1,
Hole 4 of leaking hunting is located on the cavity that inner seal ring 6 and exterior seal ring 9 are formed, and when door-plate 2, doorframe 1 close, (cell seals under heap
Shield door closure state), by detecting the leakproofness of sealing ring from hole 4 of leaking hunting to empty interacvity air-filling.
As shown in figure 4, linkage 5 includes door plate hinge seat 10, axis pin 11, hinge-rod 12, doorframe upper hinge seat 13, hinge
Chain rivet 14, the first double-row self-aligning roller bearing 15, radial ball bearing 16, the second double-row self-aligning roller bearing 17, doorframe lower hinge
Seat 18.Door plate hinge seat 10 is bolted on door-plate 2, and door plate hinge seat 10 is equipped with axis pin 11.Doorframe upper hinge seat
13rd, doorframe lower hinge seat 18 is bolted on doorframe 1；The both ends of hinge axis 14 are separately positioned on doorframe upper hinge seat
13rd, on doorframe lower hinge seat 18, radial ball bearing 16, the first double-row self-aligning roller bearing 15, second are arranged with hinge axis 14
Double-row self-aligning roller bearing 17, wherein radial ball bearing 16 are located at the middle part of hinge axis 14, the first double-row self-aligning roller bearing 15,
Second double-row self-aligning roller bearing 17 is located at the both ends of radial ball bearing 16 respectively.The both ends of hinge-rod 12 are separately positioned on axis pin
11st, on hinge axis 14, the connection of door-plate 2 and doorframe 1 is realized, door-plate 2 is rotarily opened and closed centered on hinge axis 14.
As shown in figure 5, retaining mechanism 3 is arranged on the outer surface of door-plate 2, including push rod 19, locking bed 20, connecting rod 21, rolling
Ballscrew pair 22, deceleration commutator 23, handwheel 24, guide sleeve 25 etc..
Wherein handwheel 24 is located on deceleration commutator 23, and deceleration commutator 23 is located at the middle part of door-plate 2, in deceleration commutator
23 both ends respectively connect a ball screw assembly, 22, and two connecting rods 21, every connecting rod 21 are symmetrically connected on each ball screw assembly, 22
Two push rods 19 of upper connection, push rod 19 are arranged on door-plate 2 by guide sleeve 25, and push rod 19 is symmetricly set on close to door-plate 2
On the position at edge.Push rod 19 can do straight reciprocating motion in guide sleeve 25, and 19 one end of push rod is connected on connecting rod 21, separately
Edge of the one end proximal and perpendicular to door-plate 2.Locking bed 20 is arranged on doorframe 1, and one with 2 edge of close door-plate of push rod 19
End corresponds (position and quantity).Drive deceleration commutator 23 to drive ball screw assembly, 22 to move when handwheel 24 rotates, roll
Ballscrew pair 22 drives connecting rod 21 to flex outward, so as to drive the one end at 2 edge of close door-plate of push rod 19 from the edge of door-plate 2
Stretch out, and moved to doorframe 1 and compress locking bed 20, form locking point, realize that the sealing between door-plate 2 and doorframe 1 is closed and (push away
After bar 19 enters locking bed 20, it can to produce opposite pressure between door-plate 2 and doorframe 1, so that inner seal ring 6 and outer
Sealing ring 9 is pressed on doorframe 1, realizes sealing, meanwhile, doorframe 1 and door-plate 2 can be fixed on one by push rod 19 with locking bed 20
Rise, prevent both from disengaging；Push rod 19 shares 8, and locking bed 20 is also corresponding 8, collectively forms 8 locking points)；Work as handwheel
24 drive deceleration commutator 23 to drive 22 counter motion of ball screw assembly, when reversely rotating, ball screw assembly, 22 drive connecting rod 21 to
In shrink, so as to drive push rod 19 translate to the direction away from doorframe 1 and release the compression to locking bed 20, realize door-plate 2 and
The releasing that sealing between doorframe 1 is closed.The decrement adjustment of sealing ring described in the utility model is exactly by adjusting locking
The crush between push rod 19 and locking bed 20 in mechanism 3 is realized.
Device described in the utility model is not limited to the embodiment described in embodiment, those skilled in the art
Technical solution according to the present utility model draws other embodiments, also belongs to the technological innovation scope of the utility model.
Claims (9)
1. closed shield door in cell under a kind of heap, is arranged under the heap below reactor pit on cell, including by being arranged on
The doorframe (1) and door-plate (2) that the linkage (5) of side links together, the door-plate (2) are equipped with sealing ring, the door
Frame (1), door-plate (2) are equipped with retaining mechanism (3), it is characterized in that:The sealing ring is the adjustable Double seal ring of decrement, institute
State retaining mechanism (3) and be equipped with multiple locking points.
2. closed shield door in cell under a kind of heap as claimed in claim 1, it is characterized in that：The doorframe (1), door-plate (2) are
The rectangular configuration being adapted to each other, the linkage (5) are located on the inner surface of the doorframe (1), door-plate (2), the hinge
When mechanism (5) is in closure state, the edge of the outer surface of the door-plate (2) is in contact with the inner surface of the doorframe (1)；Institute
Stating Double seal ring includes inner seal ring (6) and exterior seal ring (9), described on the edge for the outer surface for being arranged on the door-plate (2)
Inner seal ring (6) is located on the inside of the exterior seal ring (9), and the inner seal ring (6), exterior seal ring (9) are in the door-plate (2)
It is to be arranged in parallel on each edge.
3. closed shield door in cell under a kind of heap as claimed in claim 2, it is characterized in that：In the outer surface of the door-plate (2)
Edge be equipped with first step, the inner seal ring (6), exterior seal ring (9) are arranged on the first step；In the door
The inner surface of frame (1) is equipped with the second step being adapted with the first step；When the linkage (5) is in closure state
When, the first step, second step close mutually, and the doorframe is realized by the inner seal ring (6), exterior seal ring (9)
(1), the sealing between door-plate (2).
4. closed shield door in cell under a kind of heap as claimed in claim 3, it is characterized in that：Described the of the door-plate (2)
Set on one step it is fluted, the inside grooves be uniformly arranged several carry fastener (8) pressing plate (7), the fastening
Part (8) can be fixed on the door-plate (2), and the inner seal ring (6), exterior seal ring (9) are arranged on institute by the pressing plate (7)
State the inside both sides of groove, and be fixed and compress by fastener (8), the inner seal ring (6), exterior seal ring (9) it
Between form the annular cavity of closure.
5. closed shield door in cell under a kind of heap as claimed in claim 4, it is characterized in that：In the outer surface of the doorframe (1)
On, equipped with a hole of leaking hunting (4), the hole of leaking hunting (4) is fixedly mounted on the doorframe (1), and the hole of leaking hunting (4) is located at institute
State on the cavity that inner seal ring (6) is formed with the exterior seal ring (9), when the door-plate (2), doorframe (1) closure, lead to
Cross from the hole of leaking hunting (4) to the empty interacvity air-filling to detect the leakproofness of the sealing ring.
6. closed shield door in cell under a kind of heap as claimed in claim 1, it is characterized in that：The retaining mechanism (3) is arranged on
The outer surface of the door-plate (2), including the deceleration commutator (23) equipped with handwheel (24), at deceleration commutator (23) both ends
Respectively one ball screw assembly, (22) of connection, each symmetrically connects two connecting rods (21), every institute on the ball screw assembly, (22)
State two push rods (19) of connection, the push rod (19) on connecting rod (21) to be arranged on the door-plate (2) by guide sleeve (25), institute
Straight reciprocating motion can be done in the guide sleeve (25) by stating push rod (19), and described push rod (19) one end is connected to the connecting rod
(21) on, edge of the other end proximal and perpendicular to the door-plate (2)；Further include and be arranged on the doorframe (1), pushed away with described
The one-to-one locking bed in one end (20) at close door-plate (2) edge of bar (19)；The band when the handwheel (24) rotates
The dynamic deceleration commutator (23) drives ball screw assembly, (22) movement, and the ball screw assembly, (22) drives the connecting rod
(21) flex outward, so as to drive the one end at close door-plate (2) edge of push rod (19) mobile to the doorframe (1) and press
The tight locking bed (20), forms the locking point, realizes that the sealing between the door-plate (2) and the doorframe (1) is closed；When
The handwheel (24) drives the deceleration commutator (23) to drive ball screw assembly, (22) counter motion, institute when reversely rotating
Stating ball screw assembly, (22) drives the connecting rod (21) to shrink inwards, so as to drive push rod (19) to the remote doorframe (1)
Direction translates and releases the compression to the locking bed (20), realizes that the sealing between the door-plate (2) and the doorframe (1) is closed
The releasing closed.
7. closed shield door in cell under a kind of heap as claimed in claim 6, it is characterized in that：The push rod (19) is symmetricly set on
On the position at the edge of the door-plate (2).
8. closed shield door in cell under a kind of heap as claimed in claim 6, it is characterized in that：The decrement adjustment of the sealing ring
It is to be realized by adjusting crush between the push rod (19) and the locking bed (20) in the retaining mechanism (3).
9. closed shield door in cell under a kind of heap as claimed in claim 2, it is characterized in that：The linkage (5) includes logical
Cross bolt be fixed on the door-plate (2), the door plate hinge seat (10) equipped with axis pin (11), further include and be bolted on institute
Doorframe upper hinge seat (13), the doorframe lower hinge seat (18) on doorframe (1) are stated, both ends are separately positioned on the doorframe upper hinge seat
(13), the hinge axis (14) on doorframe lower hinge seat (18), hinge axis (14) middle part are arranged with radial ball bearing (16),
The first double-row self-aligning roller bearing is arranged with respectively on the axis body of the hinge axis (14) at radial ball bearing (16) both ends
(15) and the second double-row self-aligning roller bearing (17) both ends, are further included and are separately positioned on the axis pin (11), on hinge axis (14)
Hinge-rod (12), the door-plate (2) rotarily opens and closed centered on the hinge axis (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721127102.5U CN207348688U (en) | 2017-09-05 | 2017-09-05 | Closed shield door in cell under a kind of heap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721127102.5U CN207348688U (en) | 2017-09-05 | 2017-09-05 | Closed shield door in cell under a kind of heap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207348688U true CN207348688U (en) | 2018-05-11 |
Family
ID=62412350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721127102.5U Active CN207348688U (en) | 2017-09-05 | 2017-09-05 | Closed shield door in cell under a kind of heap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207348688U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630120A (en) * | 2019-09-12 | 2019-12-31 | 中广核工程有限公司 | Locking mechanism for sealing door of personnel gate of nuclear power plant |
| CN111605731A (en) * | 2020-04-30 | 2020-09-01 | 北京空间飞行器总体设计部 | Manned spacecraft large-drift-diameter rectangular sealed cabin door device |
| CN116220505A (en) * | 2022-09-09 | 2023-06-06 | 广东永祥福安防科技有限公司 | Vault door |
-
2017
- 2017-09-05 CN CN201721127102.5U patent/CN207348688U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630120A (en) * | 2019-09-12 | 2019-12-31 | 中广核工程有限公司 | Locking mechanism for sealing door of personnel gate of nuclear power plant |
| CN110630120B (en) * | 2019-09-12 | 2021-09-07 | 中广核工程有限公司 | Locking mechanism for sealing door of personnel gate of nuclear power plant |
| CN111605731A (en) * | 2020-04-30 | 2020-09-01 | 北京空间飞行器总体设计部 | Manned spacecraft large-drift-diameter rectangular sealed cabin door device |
| CN111605731B (en) * | 2020-04-30 | 2021-11-16 | 北京空间飞行器总体设计部 | Manned spacecraft large-drift-diameter rectangular sealed cabin door device |
| CN116220505A (en) * | 2022-09-09 | 2023-06-06 | 广东永祥福安防科技有限公司 | Vault door |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207348688U (en) | Closed shield door in cell under a kind of heap | |
| CN203839454U (en) | Battery liquid injection glove box transition bin | |
| CN110624663B (en) | Medical waste smashing and sterilizing cabinet | |
| CN208996688U (en) | A kind of annular preventer | |
| CN207647771U (en) | A kind of intake valve of screw-rod air compressor | |
| CN218477989U (en) | Manhole cover opening and closing system capable of being opened in horizontal position and sealed in expansion and compression | |
| CN106481183A (en) | A kind of automatic-sealed switching mechanism | |
| CN107859755B (en) | A kind of globe valve maintenance sealing control method | |
| CN217401732U (en) | Vacuum gate valve with antidetonation function | |
| CN214170325U (en) | Movable sealing door for vacuum negative pressure cabinet | |
| CN214868579U (en) | Door closer assembling device | |
| CN203796022U (en) | Door locking device of personnel air lock on containment | |
| CN114150947A (en) | Rotary telescopic cabin door locking device | |
| CN106891567A (en) | Split type horizontal garbage compressor holding claw mechanism and the Split garbage compressor with the holding claw mechanism and its preparation method | |
| CN212478977U (en) | Airtight door of disinfection cabin | |
| CN210566511U (en) | Manual exhaust valve | |
| CN208885997U (en) | A kind of double-acting friction-free butterfly valve | |
| CN216081904U (en) | Be used for experimental frock of air personnel and equipment gate composite rubber door body sealing strip | |
| CN208251980U (en) | A kind of sealing device and shield machine people's hatch door | |
| CN206801302U (en) | Protective airtight partition door for subway district hinge mechanism | |
| CN216745450U (en) | Automatic tightening mechanism for sealing door of curing oven | |
| CN213860248U (en) | Effectual tire vulcanization make-up machine of shaping | |
| CN106734224A (en) | A kind of milling train valve with buffer unit | |
| CN203051922U (en) | Motor-driven double-hidden-rod gate valve for coke tower | |
| CN212958597U (en) | Special tool for pressure test of downhole operation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |