CN217234596U - Ball valve structure is fixed to spacing ultra-low temperature upper assembling of crescent - Google Patents
Ball valve structure is fixed to spacing ultra-low temperature upper assembling of crescent Download PDFInfo
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- CN217234596U CN217234596U CN202220812795.6U CN202220812795U CN217234596U CN 217234596 U CN217234596 U CN 217234596U CN 202220812795 U CN202220812795 U CN 202220812795U CN 217234596 U CN217234596 U CN 217234596U
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- valve
- crescent
- lengthened
- low temperature
- ultra
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- 239000000945 filler Substances 0.000 claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 18
- 238000012856 packing Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 claims description 7
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims 1
- 210000004907 gland Anatomy 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Taps Or Cocks (AREA)
Abstract
A crescent-shaped limiting ultra-low temperature top-mounted fixed ball valve structure comprises a valve body, a lengthened valve cover, a valve rod, filler, a filler pressing sleeve, a filler pressing plate, a handle, a limiting piece and a limiting mechanism arranged on the top surface of the lengthened valve cover, wherein one end of the valve rod extends into the valve body along the lengthened valve cover and is connected with a ball body inside the valve body, the filler pressing sleeve and the filler pressing plate are sequentially sleeved at one end, away from the ball body, of the valve rod, the filler pressing plate forms a seal with the valve rod through a filler bolt, and the limiting piece and the handle are fixedly sleeved at the head of the valve rod; the limiting mechanism comprises two inner hexagon bolts and a crescent connecting piece, wherein the inner hexagon bolts are in threaded connection with the lengthened valve cover, and the distance between the bolt heads of the inner hexagon bolts and the top surface of the lengthened valve cover is adjustable. Crescent connection piece and two hexagon socket head cap screw connection form stable chain structure, can offset the inertia impact that the switch produced, and spacing reliable and stable avoids gland bolt and gland completely simultaneously, can not cause gland department filler to leak, has improved operation safety and valve life.
Description
Technical Field
The utility model belongs to the technical field of the ball valve technique and specifically relates to a ball valve structure is fixed to spacing ultra-low temperature upper assembling of crescent.
Background
In order to achieve the aim of carbon neutralization, natural gas resources developed and collected in China at present cannot meet the requirement of rapid development of national economy, and the international LNG trade volume still needs to be increased. LNG is listed as a new energy source of key development, and although more and more LNG receiving stations are put into use, the national natural gas official network is gradually communicated, and the filler is often leaked. And the ultralow temperature valve for LNG is used as one of key equipment of the low-temperature pipeline, and the long service life of the valve is particularly important. In the ultra-low temperature ball valve for LNG, the packing gland is independent, and the resealing of the valve rod can be realized on the basis of not disassembling the valve component and the operator. The design of a limiting structure for handle operation is important under the structure, the limiting device on the existing market adopts a filler bolt for positioning, when the handle is opened or closed at 90 degrees, the filler bolt is loosened due to frequent collision, the filler is leaked, and property loss and personnel safety risks are caused; the locking mechanism is also provided with a hole on the packing gland flange, so that the locking is unstable, the gland is loosened to cause leakage, and the service life is short.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a spacing ultra-low temperature facial make-up of crescent fixed ball valve structure, the assembly is simple, and stability is good, avoids the gland bolt completely to come spacingly, and the gland flange is also avoided completely to the lockhole position, can not cause gland department filler to leak, has improved operation safety and valve life.
The utility model discloses the technical scheme who adopts as follows: a crescent-shaped limiting ultra-low temperature top-mounted fixed ball valve structure comprises a valve body, a lengthened valve cover, a valve rod, filler, a filler pressing sleeve, a filler pressing plate, a handle, a limiting piece and a limiting mechanism arranged on the top surface of the lengthened valve cover, wherein one end of the valve rod extends into the valve body along the lengthened valve cover and is connected with a ball body inside the valve body, the filler pressing sleeve and the filler pressing plate are sequentially sleeved at one end, away from the ball body, of the valve rod, the filler pressing plate and the valve rod form a seal through a filler bolt, and the limiting piece and the handle are sleeved at the head of the valve rod and fixed through nuts; the limiting mechanism comprises two inner hexagon bolts in threaded connection with the lengthened valve cover and a crescent connecting piece connected between the two inner hexagon bolts, the distance between the bolt head of each inner hexagon bolt and the top surface of the lengthened valve cover is adjustable, and the lower ends of the inner hexagon bolts are fixedly locked by first nuts.
Preferably, the valve body also comprises a lower valve rod, a ball body, a spring, a front valve seat and a fastener, wherein the left end of the valve body is arranged in the front valve seat to form sealing with the valve body through a single piston Lip-seal; the right end of the valve body is arranged in a rear valve seat, and the valve body is sealed through a double-piston Lip-seal; the ball body is tightly matched with the lower valve rod and is placed in the valve body; a first bearing and an antistatic device are designed between the lower valve rod and the valve body; threads are designed on the outer rings of the front and rear valve seats, and the adjusting nuts are supported by the springs in the spring seats, so that the sealing rings at the tail ends of the front and rear valve seats are tightly attached to the ball body to form sealing; one end of the valve rod extending into the valve body penetrates through a second bearing in the lengthened valve cover and then is sleeved with the wear-resistant gasket and then is connected with the top surface of the ball body, the lengthened valve cover and the valve body are locked together through a fastening piece, and a middle Lip-seal and a middle gasket are arranged between the lengthened valve cover and the valve body for double sealing.
Preferably, the crescent connecting piece and the limiting piece are provided with two lock holes, the two lock holes on the crescent connecting piece correspond to the full-open position and the full-close position of the valve respectively, and O and S characters and arrow marks are arranged on the crescent connecting piece and mark the opening and closing direction of the valve.
Preferably, the single piston Lip-seal is fixed on the front valve seat by a fixed block, and an area difference is formed after the pressure of the middle cavity rises, so that the function of self pressure relief is realized.
Preferably, the Lip-seal of the double piston is formed by two Lip-shaped openings with opposite directions, so that a double-piston effect is formed, and a double-partition function is realized.
Preferably, the periphery of the lengthened valve cover is further provided with a drip tray, and the drip tray and the lengthened valve cover are fully welded to form a whole, so that condensate cannot permeate into the heat insulation layer.
Preferably, the lower edge of the packing bolt is provided with a butterfly spring group, and the packing can be automatically compensated when being influenced by a low-temperature medium to shrink.
In any of the above technical solutions, it is preferable that the front and rear valve seats are provided with fire-proof rings, so that a sealing function can be achieved in case of fire.
In any of the above technical solutions, it is preferable that the first bearing and the second bearing are made of stainless steel material lining PCTFE, and have low friction coefficient and good wear resistance.
Preferably, the wear-resistant gasket is made of a stainless steel material and is surface-lined with PCTFE.
The utility model relates to a spacing ultra-low temperature upper assembling fixed ball valve structure of crescent has following technological effect:
1) crescent stop device simple to operate long service life: the two inner hexagon bolts for limiting are connected through the crescent connecting sheet, the lower ends of the two inner hexagon bolts are respectively fixed by the first nut and the second nut, the structure is very stable, the limiting and positioning are accurate, and the valve can be completely opened and closed; the height of the inner hexagon bolt is adjustable, the problem of inaccurate positioning caused by accumulated errors in the assembling process is solved, and the limiting piece can be ensured to be contacted with the cylindrical bolt head of the inner hexagon bolt; the position of the lock hole is completely avoided from being limited by the packing gland bolt, the packing gland flange is also completely avoided from being locked, the packing leakage at the gland can not be caused, and the operation safety and the service life of the valve are improved.
2) The valve is convenient to maintain on line: during assembly, the adjusting nuts on two sides are rotated in a spiral mode to push the spring seat to compress the spring to provide thrust, and the valve seat moves towards the direction of the ball body to form sealing; when the online maintenance is dismantled, the adjusting nuts on the two sides are rotated in the opposite directions, the thrust of the spring disappears, the valve seat moves towards the two sides, and the ball body can be quickly taken out; the design that the pretension of the valve seat can be adjusted solves the problems that the pretension of the spring caused by accumulated tolerance in machining is not enough and the sealing performance of the valve is not good. When the abrasion of the single sealing surface needs to be maintained on line, the disassembly and the assembly are convenient, field personnel can quickly replace spare parts, the valve maintenance time is shortened, and the economic loss is reduced.
3) Designing the self-pressure relief in front of the valve: preceding disk seat adopts single piston effect sealed form, begins disk seat and single piston to become a whole through the fixed block, receives pressure before the valve, can form sealedly, receives low temperature medium temperature influence gasification to boost pressure if the lumen, can promote the disk seat and move forward, lets out the pressure of lumen, need not at components such as installation relief valve on the valve body, has reduced the leakage point, has ensured the safe in utilization of valve, has reduced the input cost.
4) The double partition function of the rear valve seat: the double-piston Lip-seal is provided with two Lip-shaped openings in opposite directions, so that a double-piston effect is formed, and a double-partition function is realized; the valve is installed according to the flow direction, the front valve seat and the rear valve seat are sealed, the sealing effect is better, if one seal is damaged in long-time use, the second seal is also adopted, the safety of the pipeline is improved, and the service life is prolonged; when the front end of the valve needs to be subjected to liquid-break maintenance, after the valve is closed, the back-end medium can not flow backwards due to the bidirectional sealing function, and the cost and the installation space of the check valve are reduced.
5) The torque is light: the upper and lower valve rods of the fixed ball body are provided with a first bearing and a second bearing, and a PCTFE material is lined in a stainless steel material; the valve rod anti-flying step is provided with a wear-resistant gasket, and a PCTFE structure lined with stainless steel material is adopted; the friction coefficient is low in the initial valve opening and closing process, the wear resistance is good, the valve operation torque is reduced, and the cost is saved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a perspective view of the operating device of fig. 1.
Fig. 3 is a partial enlarged view of the valve body and front valve seat single piston of fig. 1.
Fig. 4 is a partial enlarged view of the valve body and rear valve seat dual piston of fig. 1.
Fig. 5 is an enlarged view of a portion of the bearing of fig. 1.
Fig. 6 is a top view of fig. 1.
In the figure: the valve comprises a valve body 1, a spring seat 2, an adjusting nut 3, a lower valve rod 4, a first bearing 5, a ball 6, a spring 7, an anti-static device 8, a front valve seat 9, a sealing ring 10, a fire-proof ring 11, a single piston Lip-seal12, a double piston Lip-seal13, a rear valve seat 14, a wear-resistant gasket 15, a second bearing 16, a middle Lip-seal17, a middle gasket 18, a fastener 19, an extension valve cover 20, a valve rod 21, a drip tray 22, a filler Lip-seal 23, a filler gasket 24, a filler 25, a filler pressure sleeve 26, a filler pressure plate 27, a filler bolt 28, a butterfly spring set 29, a first nut 30, an inner hexagonal bolt 31, a second nut 32, a lock 33, a crescent-shaped 34, a limiting sheet 35, a handle 36, a nut 37, a closed state 38, a fixing block 39 and a lock hole 40.
Detailed Description
In order to overcome the technical defects of the ball valve such as limiting block positioning and assembling structure in the prior art, the embodiment provides the crescent limiting ultra-low temperature upper assembling type fixed ball valve structure, the limiting device and the packing gland bolt are separately designed, the sealing performance of the valve is guaranteed, and the service life of the valve is prolonged.
The structure and technical features of the crescent-shaped limiting ultra-low temperature top-mounted fixed ball valve according to the present embodiment will be described in detail with reference to fig. 1 to 6.
The ultra-low temperature top-mounted fixed ball valve structure with the crescent limiting function comprises a valve body 1, a lengthened valve cover 19, a valve rod 20, a filler 25, a filler pressing sleeve 26, a filler pressing plate 27, a handle 36, a limiting sheet 35 and a limiting mechanism arranged on the top surface of the lengthened valve cover 19, wherein one end of the valve rod 20 extends into the valve body 1 along the lengthened valve cover 19 and is connected with a sphere 6 in the valve body 1 to drive the sphere 6 to rotate, the filler 25, the filler pressing sleeve 26 and the filler pressing plate 27 are sequentially sleeved at one end, far away from the sphere 6, of the valve rod 20, the filler pressing plate 27 and the valve rod 20 are sealed by rotating a filler bolt 28 for pre-tightening, then the limiting sheet 35 and the handle 36 are continuously sleeved and fixed through a nut 37, and the limiting sheet 35 and the handle 36 rotate together with the valve rod; the limiting mechanism comprises two inner hexagon bolts 31 in threaded connection with the lengthened valve cover 19 and a crescent connecting piece 34 connected between the two inner hexagon bolts 31, the distance between the bolt head of the inner hexagon bolt 31 and the top surface of the lengthened valve cover 19 is adjustable, the lower end of the inner hexagon bolt 31 is fixedly locked by a first nut 30, the problem of accumulated assembly errors is solved, and the limiting piece 35 can be abutted to the cylindrical bolt heads of the two inner hexagon bolts 31 in the rotating process along with the valve rod; the crescent connecting sheet 34 is connected with the two hexagon socket head cap screws 31 to form a stable chain structure, so that the inertia impact generated by the switch can be counteracted, and the limit is stable.
Specifically, the crescent connecting piece 34 is fixed by a second nut which is sleeved on the hexagon socket head cap screw 31 and is located below the crescent connecting piece 34.
The crescent connecting piece 34 and the limiting piece 35 are provided with two locking holes 40, wherein the two locking holes on the crescent connecting piece 34 correspond to the full-open position and the full-close position of the valve respectively, and the crescent connecting piece 34 and the limiting piece are fixed by using a padlock, so that the misoperation of non-workers can be prevented, and economic loss and safety accidents are prevented; as shown in fig. 6, the crescent connecting piece 34 has O and S characters and arrows, which mark the opening and closing direction and the opening and closing state of the valve.
The left end of the valve body 1 is arranged in the front valve seat 9, and is sealed with the valve body through a single piston Lip-seal 12; the right end of the valve body 1 is installed in a rear valve seat 14, and a double-piston Lip-seal13 is used for forming sealing with the valve body; the ball body 6 is tightly matched with the lower valve rod 4 and is placed in the valve body 1; a first bearing 5 and an antistatic device 8 are designed between the lower valve rod 4 and the valve body; threads are designed on the outer rings of the front and rear valve seats, and the adjusting nut 3 is supported by a spring 7 in the spring seat 2, so that a sealing ring 10 at the tail ends of the front and rear valve seats is tightly attached to a ball body 6 to form sealing; one end of the valve rod 21 extending into the valve body penetrates through the second bearing 16 in the lengthened valve cover 20 and then is sleeved with the wear-resistant gasket 15 and then is connected with the top surface of the ball body, the lengthened valve cover 20 and the valve body 1 are locked together through a fastening piece 19, and a middle Lip-seal17 and a middle gasket 18 are arranged between the lengthened valve cover 20 and the valve body 1 for double sealing.
The single piston Lip-seal12 is fixed on the front valve seat 9 by the fixing block 39, as shown in fig. 3, the area difference is formed after the pressure of the middle cavity rises, and the self-pressure-relief function is realized.
The double-piston Lip-seal13 is formed by two Lip-shaped openings with opposite directions as shown in fig. 4, so that a double-piston effect is formed, and a double-partition function is realized; meanwhile, a space for moving the valve seat rightwards is reserved, so that the ball body can be conveniently taken out and maintained on line.
The periphery of the lengthened valve cover 20 is also provided with a water dripping disc 22, and the water dripping disc 22 and the lengthened valve cover 20 are fully welded to form a whole, so that condensate cannot permeate into the heat insulation layer.
The lower edge of the packing bolt 28 is designed with a butterfly spring group 29, as shown in fig. 2, the packing can be automatically compensated when being contracted under the influence of a low-temperature medium.
The front and rear valve seats are provided with fire-proof rings 11 which can seal in case of fire, and the fire-proof rings 11 are shown in fig. 3 and 4.
As shown in fig. 1 and 5, the first bearing 5 and the second bearing 16 are made of stainless steel material lining PCTFE, and have low friction coefficient and good wear resistance.
The wear-resistant gasket 15 is made of stainless steel material and is surface-lined with PCTFE.
The spacing fixed ball valve structure of ultra-low temperature upper assembling formula of crescent that this embodiment provided, its spacing principle of switch:
according to the switch identification on the crescent connecting sheet 34, the operating handle 30 drives the valve rod 21, the limiting sheet 35 and the ball body 6 to rotate, when the valve rod rotates 90 degrees to the closed state 38, the outer boundary of the limiting sheet 35 is contacted with the bolt head of the hexagon socket head screw 31 for limiting, and the same is carried out when the valve is opened; the lock can be used for locking in an open position or a closed position according to the mining requirements.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing shows and describes the basic principles and principal features of the invention, together with the advantages thereof. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A crescent-shaped limiting ultra-low temperature top-mounted fixed ball valve structure is characterized by comprising a valve body, a lengthened valve cover, a valve rod, filler, a filler pressing sleeve, a filler pressing plate, a handle, a limiting piece and a limiting mechanism arranged on the top surface of the lengthened valve cover, wherein one end of the valve rod extends into the valve body along the lengthened valve cover and is connected with a ball body in the valve body; the limiting mechanism comprises two inner hexagon bolts in threaded connection with the lengthened valve cover and a crescent connecting piece connected between the two inner hexagon bolts, the distance between the bolt head of each inner hexagon bolt and the top surface of the lengthened valve cover is adjustable, and the lower ends of the inner hexagon bolts are fixedly locked by first nuts.
2. The crescent-shaped limited ultra-low temperature top-mounted fixed ball valve structure as claimed in claim 1, further comprising a lower valve rod, a ball, a spring, a front valve seat and a fastener in the valve body, wherein the front valve seat mounted at the left end of the valve body forms a seal with the valve body through a single piston Lip-seal; the right end of the valve body is arranged in a rear valve seat, and the valve body is sealed through a double-piston Lip-seal; the ball body is tightly matched with the lower valve rod and is placed in the valve body; a first bearing and an antistatic device are designed between the lower valve rod and the valve body; threads are designed on the outer rings of the front and rear valve seats, and the adjusting nut is supported by a spring in the spring seat, so that the sealing rings at the tail ends of the front and rear valve seats are tightly attached to the ball body; one end of the valve rod extending into the valve body penetrates through a second bearing in the lengthened valve cover and then is sleeved with the wear-resistant gasket and then is connected with the top surface of the ball body, the lengthened valve cover and the valve body are locked together through a fastening piece, and a middle Lip-seal and a middle gasket are arranged between the lengthened valve cover and the valve body for double sealing.
3. The crescent limited ultra-low temperature upper-mounted fixed ball valve structure as claimed in claim 1, wherein the crescent connecting plate and the limiting plate are provided with two lock holes, and the two lock holes correspond to the fully open and fully closed positions of the valve respectively.
4. The crescent-shaped limiting ultra-low temperature top-mounted fixed ball valve structure as claimed in claim 3, wherein the crescent-shaped connecting piece is provided with O and S characters and arrow marks.
5. The crescent-shaped limited ultra-low temperature top-mounted fixed ball valve structure as claimed in claim 2, wherein the single piston Lip-seal is fixed on the front valve seat by a fixing block.
6. The crescent-shaped limited ultra-low temperature top-loading fixed ball valve structure as claimed in claim 2, wherein the double piston Lip-seal has two Lip-shaped openings in opposite directions.
7. The crescent-shaped limiting ultra-low temperature upper-mounted fixed ball valve structure as claimed in claim 1, wherein a drip tray is further arranged on the periphery of the lengthened valve cover, and the drip tray is in full-welding with the lengthened valve cover.
8. The crescent-shaped limiting ultra-low temperature top-mounted fixed ball valve structure as claimed in claim 1, wherein a butterfly spring set is designed below the packing bolt.
9. The crescent-shaped limiting ultra-low temperature top-mounted fixed ball valve structure as claimed in claim 2, wherein the front and rear valve seats are designed with fire rings.
10. The crescent-shaped spacing ultra-low temperature top-loading fixed ball valve structure as claimed in claim 2, wherein the first bearing and the second bearing are made of stainless steel material lining PCTFE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220812795.6U CN217234596U (en) | 2022-04-08 | 2022-04-08 | Ball valve structure is fixed to spacing ultra-low temperature upper assembling of crescent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220812795.6U CN217234596U (en) | 2022-04-08 | 2022-04-08 | Ball valve structure is fixed to spacing ultra-low temperature upper assembling of crescent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217234596U true CN217234596U (en) | 2022-08-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220812795.6U Withdrawn - After Issue CN217234596U (en) | 2022-04-08 | 2022-04-08 | Ball valve structure is fixed to spacing ultra-low temperature upper assembling of crescent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217234596U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115614514A (en) * | 2022-11-10 | 2023-01-17 | 上海瑞控阀门有限公司 | Ultra-low temperature three-way ball valve |
-
2022
- 2022-04-08 CN CN202220812795.6U patent/CN217234596U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115614514A (en) * | 2022-11-10 | 2023-01-17 | 上海瑞控阀门有限公司 | Ultra-low temperature three-way ball valve |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20220819 Effective date of abandoning: 20231218 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20220819 Effective date of abandoning: 20231218 |