CN109798384A - A kind of valve body of polyethylene ball valve - Google Patents
A kind of valve body of polyethylene ball valve Download PDFInfo
- Publication number
- CN109798384A CN109798384A CN201910162443.3A CN201910162443A CN109798384A CN 109798384 A CN109798384 A CN 109798384A CN 201910162443 A CN201910162443 A CN 201910162443A CN 109798384 A CN109798384 A CN 109798384A
- Authority
- CN
- China
- Prior art keywords
- spool
- valve
- section
- sliding sleeve
- medium channel
- 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.)
- Granted
Links
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 15
- -1 polyethylene Polymers 0.000 title claims abstract description 15
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 44
- 238000009826 distribution Methods 0.000 claims abstract description 13
- 238000004026 adhesive bonding Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 238000012856 packing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The invention discloses a kind of valve bodies of polyethylene ball valve, it is related to polyethylene ball valve technical field, the spool including at least valve seat, in valve seat and the valve rod for driving spool, valve seat is interior to be equipped with medium channel, spool is set in the medium channel of valve seat, further includes one leaking hunting capping；One end in the medium channel is embedded with a sliding sleeve, and the sliding sleeve and medium channel are coaxially disposed, and sliding sleeve outer wall and the sealing of medium channel inner wall are fixed, and internal thread segment and smooth section is equipped in sliding sleeve, internal thread segment is located at the medium channel end opening side；The capping of leaking hunting is divided into seal section, external thread section and limit section, the seal section from front to back to be slidingly sealed cooperation with the smooth section in sliding sleeve；The external thread section can screw togather fixation with the internal thread segment in sliding sleeve；It leaks hunting to cover and is equipped with a gas distribution channel through front/rear end.The present invention propose it is a kind of when spool shift can also reduce leakage may and can facilitate carry out air tightness test polyethylene ball valve valve body.
Description
Technical field
The present invention relates to polyethylene ball valve technical field more particularly to a kind of valve bodies of polyethylene ball valve.
Background technique
Polyethylene ball valve be plastic material ball valve, be mainly used in gas distributing system, have it is easy for installation, not vulnerable to corruption
The advantages that erosion.
In use, when spool is in closed state, the air pressure size being subject to due to spool two sides is or not such ball valve
Together, spool can shift to the small side of air pressure, at this point, the extruding between the spool and the side seal circle of the big side of air pressure
Power can reduce, and have the possibility of leakage.Also, when spool shifts, the valve rod connecting with spool will receive a transverse direction
Shearing stress is not only easily damaged valve rod, is also easy to cause the leakage of valve rod junction.
Polyethylene ball valve assembling is improper in order to prevent, and above several leakage problems, each ball valve factory are occurred as soon as before factory
Preceding all obtain passes through stringent air tightness test.
Summary of the invention
The present invention to solve the above-mentioned problems, proposes a kind of can also reduce leakage when spool shifts and may and can facilitate
Carry out the valve body of the polyethylene ball valve of air tightness test.
To achieve the goals above, the invention adopts the following technical scheme: a kind of valve body of polyethylene ball valve, includes at least
Valve seat, the spool in valve seat and the valve rod for driving spool, valve seat is interior to be equipped with medium channel, and spool is set to Jie of valve seat
It further include one leaking hunting capping in matter channel；
One end in the medium channel is embedded with a sliding sleeve, and the sliding sleeve and medium channel are coaxially disposed, sliding sleeve outer wall and Jie
The sealing of matter vias inner walls is fixed, and internal thread segment and smooth section are equipped in sliding sleeve, and internal thread segment is located at the medium channel end opening side；
It is described leak hunting capping be divided into from front to back seal section, external thread section and limit section, the seal section can in sliding sleeve
Smooth section be slidingly sealed cooperation；The external thread section can screw togather fixation with the internal thread segment in sliding sleeve；
It leaks hunting to cover and is equipped with a gas distribution channel through front/rear end, gas distribution channel outer openings pass through the one of tracheae and charge valve
A interface connection, another interface of charge valve are connect with external air source, and the tracheae between gas distribution channel and charge valve is equipped with
One for monitoring the pressure gauge and one of intraductal atmospheric pressure for letting out the exhaust valve except intraductal atmospheric pressure.
Preferably, be equipped with several O-ring seals on the seal section of the capping of leaking hunting, the O-ring seal with it is close
It seals section sealing to fix, the smooth section in O-ring seal and sliding sleeve is slidingly sealed cooperation.
Preferably, one end opposite with sliding sleeve is embedded with a spool thrust ring in the medium channel, the spool stops
Throw-out collar and medium channel are coaxially disposed, and the pore of sliding sleeve is divided into small-bore section and heavy caliber section, and heavy caliber section is located at court in sliding sleeve
To the side of spool thrust ring, the internal thread segment and smooth section are respectively positioned on small-bore section；
A spool positioning seat is equipped in the valve seat, in a tubular form, spool positioning seat one end stretches in sliding sleeve to the spool positioning seat
Heavy caliber section and cooperation is slidingly sealed with heavy caliber section inner wall；The spool is set in spool positioning seat, and spool two sides respectively pass through
One stop collar clamps positioning, and two stop collars are fixed with spool positioning seat inner wall, are equipped on stop collar towards spool side
First sealing ring, the first sealing ring on two stop collars with spool outer wall gluing, sealing；
The second sealing ring, second sealing ring and spool outer wall gluing, sealing are equipped with towards spool side on spool thrust ring；
The outer wall of the valve seat is vertically equipped with a containing tube, and it is accommodating cavity, accommodating cavity in containing tube that containing tube and valve seat, which are integrally formed,
Lower end is connected to medium channel, and upper end is blocked by a sealing cover, and a worm gear, a worm screw and a shaft are equipped in accommodating cavity, is held
The side wall for setting pipe opens up a valve rod location hole, and the valve rod, which runs through, to be located on valve rod location hole and rotate with valve rod location hole close
Envelope cooperation, valve rod are located at one end end face in accommodating cavity equipped with a worm screw location hole；
A shaft hole is offered on the spool positioning seat, the lower end of the shaft passes through shaft hole and connect with spool, shaft
Central axis and spool positioning seat central axis upright；
The worm gear is set in shaft and relatively fixed with shaft, the worm and wheel engagement, the central axis of worm screw with
The centerline axis parallel of spool positioning seat；One end of worm screw stretches in the worm screw positioning hole of valve rod one end, and worm screw and worm screw position
To be slidably matched between hole, worm screw can rotate with valve rod；
The locating support of shaft and worm screw is fixed on spool positioning seat.
Therefore, the invention has the following beneficial effects: 1, be provided with capping of leaking hunting, group can be installed by capping of leaking hunting
At valve body carry out air tightness test, occur leakage can do over again in time, reduce waste of material and improve production efficiency；2, work as valve
When core shifts, the first sealing ring and the same hour offset of spool being bonded with spool are ensured between spool and the first sealing ring
Extruding force reduces a possibility that leaking；3, valve rod is laterally arranged, and when spool shifts, valve rod not will receive lateral cut
Stress ensures that valve rod will not damage；4, it is provided with worm gear mechanism between valve rod and spool, reduces operator and passes through valve rod
Operating force when rotary spool.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of capping of leaking hunting in the present invention.
Fig. 3 is the cross-sectional view of capping of leaking hunting in the present invention.
Fig. 4 is the cross-sectional view in the direction A-A in Fig. 1.
Fig. 5 is the enlarged drawing in Fig. 1 at a.
Fig. 6 is the cross-sectional view of sliding sleeve in the present invention.
Fig. 7 is the structural schematic diagram of sliding sleeve in the present invention.
Fig. 8 is the cross-sectional view of spool positioning seat in the present invention.
Fig. 9 is the structural schematic diagram of spool positioning seat in the present invention.
Figure 10 is the structural schematic diagram of another angle of spool positioning seat in the present invention.
1: valve seat；101: medium channel；2: capping of leaking hunting；201: seal section；202: external thread section；203: limit section；
204: gas distribution channel；205:O type sealing ring；3: spool；4: valve rod；401: worm screw location hole；402: valve stem packing ring；5: sliding
Set；501: small-bore section；502: heavy caliber section；503: internal thread segment；504: smooth section；6: spool positioning seat；601: stop collar；
602: the first sealing rings；603: shaft hole；7: spool thrust ring；701: the second sealing rings；8: containing tube；801: accommodating cavity；9:
Sealing cover；10: worm gear；11: worm screw；12: shaft；13: locating support；14: pressure gauge；15: charge valve；16: tracheae；17: row
Air valve.
Specific embodiment
The present invention will be further described with specific embodiment with reference to the accompanying drawing.
Referring to Fig. 1 to Figure 10, a kind of valve body of polyethylene ball valve described in the present embodiment includes at least valve seat 1, is set to valve
Spool 3 in seat 1 and valve rod 4 for driving spool 3 further include one leaking hunting capping 2, are equipped with medium channel 101 in valve seat 1,
Spool 3 is set in the medium channel 101 of valve seat 1.
One end in the medium channel 101 is embedded with a sliding sleeve 5, and the sliding sleeve 5 is coaxially disposed with medium channel 101,
5 outer wall of sliding sleeve and the sealing of 101 inner wall of medium channel are fixed, and internal thread segment 503 and smooth section 504, internal thread segment are equipped in sliding sleeve 5
503 are located at the end opening side of medium channel 101.
The capping 2 of leaking hunting is divided into seal section 201, external thread section 202 and limit section 203 from front to back, described close
Envelope section 201 can be slidingly sealed cooperation with the smooth section 504 in sliding sleeve 5, if being equipped on the seal section 201 of the capping 2 of leaking hunting
Dry O-ring seal 205, the O-ring seal 205 are fixed with the sealing of seal section 201, the light in O-ring seal 205 and sliding sleeve 5
Sliding section 504 is slidingly sealed cooperation；The external thread section 202 can screw togather fixation with the internal thread segment 503 in sliding sleeve 5.
It leaks hunting to cover and is equipped with a gas distribution channel 204 through front/rear end on 2,204 outer openings of gas distribution channel pass through tracheae
16 connect with an interface of charge valve 15, another interface of charge valve 15 is connect with external air source, gas distribution channel 204 with fill
Tracheae 16 between air valve 15 is equipped with one for monitoring the pressure gauge 14 and one of intraductal atmospheric pressure for letting out the row except intraductal atmospheric pressure
Air valve 17.
One end opposite with sliding sleeve 5 is embedded with a spool thrust ring 7, the spool thrust ring 7 in the medium channel 101
It is coaxially disposed with medium channel 101, the pore of sliding sleeve 5 is divided into small-bore section 501 and heavy caliber section 502, and heavy caliber section 502 is located at
Side and 502 inner wall smooth of heavy caliber section, the internal thread segment 503 and smooth section 504 in sliding sleeve 5 towards spool thrust ring 7
It is respectively positioned on small-bore section 501.
It is equipped with a spool positioning seat 6 in the valve seat 1, the spool positioning seat 6 in a tubular form, stretch by 6 one end of spool positioning seat
In sliding sleeve 5 heavy caliber section 502 and be slidingly sealed cooperation with 502 inner wall of heavy caliber section, 6 outer cover of spool positioning seat is equipped with positioning
Seat sealing ring, the positioning seat sealing ring and the sealing of spool positioning seat 6 are fixed, and are slidingly sealed cooperation with 502 inner wall of heavy caliber section；Institute
Spool 3 is stated in the spool positioning seat 6,3 two sides of spool respectively pass through a stop collar 601 and clamp positioning, two stop collars 601 with
6 inner wall of spool positioning seat is fixed, and is equipped with the first sealing ring 602, two stop collars 601 towards 3 side of spool on stop collar 601
On the first sealing ring 602 with 3 outer wall gluing, sealing of spool.
The second sealing ring 701, second sealing ring 701 and spool 3 are equipped with towards 3 side of spool on spool thrust ring 7
Outer wall gluing, sealing.
The outer wall of the valve seat 1 is vertically equipped with a containing tube 8, and containing tube 8 and valve seat 1 are integrally formed, and is accommodating in containing tube 8
Chamber 801,801 lower end of accommodating cavity are connected to medium channel 101, and upper end is blocked by a sealing cover 9, and one is equipped in accommodating cavity 801
Worm gear 10, a worm screw 11 and a shaft 12, the side wall of containing tube 8 open up a valve rod location hole 802, and the valve rod 4 is through positioning
Cooperate on valve rod location hole 802 and with 802 rotary seal of valve rod location hole, is arranged with several valve stem packing rings on valve rod 4
402, the valve stem packing ring 402 is fixed with the sealing of valve rod 4, and valve stem packing ring 402 is matched with 802 rotary seal of valve rod location hole
It closes, valve rod 4 is located at one end end face in accommodating cavity 801 equipped with a worm screw location hole 401, and the worm screw location hole 401 is in ellipse
Round shape.
Offer a shaft hole 603 on the spool positioning seat 6, the lower end of the shaft 12 pass through shaft hole 603 and with
Spool 3 connects, and cooperates between the shaft 12 and shaft hole 603 for rotary seal, and the central axis and spool of shaft 12 position
The central axis upright of seat 6.
The worm gear 10 is set in shaft 12 and relatively fixed with shaft 12, and the worm screw 11 engages with worm gear 10, snail
The central axis of bar 11 and the centerline axis parallel of spool positioning seat 6；One end of worm screw 11 is in and the worm screw location hole on valve rod 4
401 matched ellipticities, and the end stretches in worm screw location hole 401, matches between worm screw 11 and worm screw location hole 401 for sliding
It closes, worm screw 11 can rotate with valve rod 4.
The locating support 13 of shaft 12 and worm screw 11 is fixed on spool positioning seat 6.
By rotary valve rod 4, worm screw 11, worm gear 10 and shaft 12 can be successively driven, final band movable valve plug 3 rotates, and
Turbine and worm mechanism can play preferable power-saving function.
When installing end pipe as complete ball valve in use, the one end for being equipped with sliding sleeve 5 in valve seat 1 is set as inlet end, will set
There is one end of spool thrust ring 7 to be set as outlet side, access gas distributing system uses.
When the rotation of spool 3 to closed state, the air pressure in valve seat 1 in one end equipped with sliding sleeve 5 is greater than to be stopped equipped with spool
Air pressure in one end of throw-out collar 7, spool 3 can shift toward 7 direction of spool thrust ring, increase and on spool thrust ring 7 second
The extruding force of sealing ring 701 is finally stopped to stop movement by the second sealing ring 701.During spool 3 shifts, spool is fixed
Position seat 6 is mobile with spool 3, and relative movement occurs between spool positioning seat 6 and sliding sleeve 5 but is always maintained at sealing, spool 3 and two
It remains stable extruding force between the first sealing ring 602 on a stop collar 601, reduces natural gas from spool 3 and high-pressure side
A possibility that being leaked between sealing ring.When spool positioning seat 6 is mobile with spool 3, while will drive solid with spool positioning seat 6
Fixed locating support 13 and the shaft 12 being located on locating support 13 and worm screw 11.Due to the central axis and spool of worm screw 11
The centerline axis parallel of positioning seat 6, then worm screw 11 and spool positioning seat 6 are along central axial direction and shift, worm screw
11 will relatively move with the worm screw location hole 401 on valve rod 4.Valve rod 4, which is located on valve rod location hole 802, not to be occurred partially
It moves, it is ensured that the leakproofness at valve rod 4, and valve rod 4 not will receive lateral shearing stress, can extend the service life of valve rod 4.
When valve body is completed (before unassembled end pipe), using leaking hunting, 2 pairs of valve bodies of capping carry out air tightness test, prevent
Only valve body assembly when occur as soon as leakage, if at this time discovery leak if can do over again in time, reduce subsequent waste of material and
Improve the production efficiency of operator.Concrete operations process are as follows:
When first by the rotation of spool 3 to closed state, then the seal section 201 and external thread section 202 of the capping 2 that will leak hunting are directed at sliding sleeve 5
Port protrude into, leak hunting capping 2 seal section 201 and sliding sleeve 5 smooth section 504 sealing cooperate, leak hunting capping 2 external thread section
202 screw togather fixation with the internal thread segment 503 of sliding sleeve 5, and the end face in 5 outside of limit section 203 and sliding sleeve for capping 2 of leaking hunting contradicts limit
Position.
After capping 2 of leaking hunting is installed, exhaust valve 17 is closed, opens charge valve 15, by external air source and is leaked hunting in capping 2
Gas distribution channel 204 be connected to, external air source pass sequentially through charge valve 15, tracheae 16 and leak hunting capping 2 on gas distribution channel 204 fill
Enter body cavity, intraductal atmospheric pressure is monitored by the pressure gauge 14 on tracheae 16, i.e. monitoring body cavity air pressure.Reach survey to air pressure
Examination value closes charge valve 15, at this point, be filled with the body cavity of air pressure side in a closed cavity, and the closed cavity still with pressure
Power table 14 is connected to, and stands a period of time, by observing the numerical value change of pressure gauge 14, that is, be can determine whether that the side valve body whether there is and is let out
Leakage.
After being completed, by opening exhaust valve 17, it can let out except the intracorporal air pressure of valve, then remove capping 2 of leaking hunting
Carry out the subsequent assembling procedure of ball valve.
Claims (3)
1. a kind of valve body of polyethylene ball valve, the spool including at least valve seat, in valve seat and the valve rod for driving spool,
Medium channel is equipped in valve seat, spool is set in the medium channel of valve seat, it is characterised in that: further include one leaking hunting capping；
One end in the medium channel is embedded with a sliding sleeve, and the sliding sleeve and medium channel are coaxially disposed, sliding sleeve outer wall and Jie
The sealing of matter vias inner walls is fixed, and internal thread segment and smooth section are equipped in sliding sleeve, and internal thread segment is located at the medium channel end opening side；
It is described leak hunting capping be divided into from front to back seal section, external thread section and limit section, the seal section can in sliding sleeve
Smooth section be slidingly sealed cooperation；The external thread section can screw togather fixation with the internal thread segment in sliding sleeve；
It leaks hunting to cover and is equipped with a gas distribution channel through front/rear end, gas distribution channel outer openings pass through the one of tracheae and charge valve
A interface connection, another interface of charge valve are connect with external air source, and the tracheae between gas distribution channel and charge valve is equipped with
One for monitoring the pressure gauge and one of intraductal atmospheric pressure for letting out the exhaust valve except intraductal atmospheric pressure.
2. a kind of valve body of polyethylene ball valve according to claim 1, it is characterised in that: the seal section of the capping of leaking hunting
On be equipped with several O-ring seals, the O-ring seal and seal section sealing are fixed, the smooth section in O-ring seal and sliding sleeve
It is slidingly sealed cooperation.
3. a kind of valve body of polyethylene ball valve according to claim 1, it is characterised in that: in the medium channel and sliding sleeve
Opposite one end is embedded with a spool thrust ring, and the spool thrust ring and medium channel are coaxially disposed, and the pore of sliding sleeve is divided into
Small-bore section and heavy caliber section, it is interior towards the side of spool thrust ring that heavy caliber section is located at sliding sleeve, the internal thread segment and smooth
Section is respectively positioned on small-bore section；
A spool positioning seat is equipped in the valve seat, in a tubular form, spool positioning seat one end stretches in sliding sleeve to the spool positioning seat
Heavy caliber section and cooperation is slidingly sealed with heavy caliber section inner wall；The spool is set in spool positioning seat, and spool two sides respectively pass through
One stop collar clamps positioning, and two stop collars are fixed with spool positioning seat inner wall, are equipped on stop collar towards spool side
First sealing ring, the first sealing ring on two stop collars with spool outer wall gluing, sealing；
The second sealing ring, second sealing ring and spool outer wall gluing, sealing are equipped with towards spool side on spool thrust ring；
The outer wall of the valve seat is vertically equipped with a containing tube, and it is accommodating cavity, accommodating cavity in containing tube that containing tube and valve seat, which are integrally formed,
Lower end is connected to medium channel, and upper end is blocked by a sealing cover, and a worm gear, a worm screw and a shaft are equipped in accommodating cavity, is held
The side wall for setting pipe opens up a valve rod location hole, and the valve rod, which runs through, to be located on valve rod location hole and rotate with valve rod location hole close
Envelope cooperation, valve rod are located at one end end face in accommodating cavity equipped with a worm screw location hole；
A shaft hole is offered on the spool positioning seat, the lower end of the shaft passes through shaft hole and connect with spool, shaft
Central axis and spool positioning seat central axis upright；
The worm gear is set in shaft and relatively fixed with shaft, the worm and wheel engagement, the central axis of worm screw with
The centerline axis parallel of spool positioning seat；One end of worm screw stretches in the worm screw positioning hole of valve rod one end, and worm screw and worm screw position
To be slidably matched between hole, worm screw can rotate with valve rod；
The locating support of shaft and worm screw is fixed on spool positioning seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910162443.3A CN109798384B (en) | 2019-03-05 | 2019-03-05 | Valve body of polyethylene ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910162443.3A CN109798384B (en) | 2019-03-05 | 2019-03-05 | Valve body of polyethylene ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109798384A true CN109798384A (en) | 2019-05-24 |
| CN109798384B CN109798384B (en) | 2020-01-21 |
Family
ID=66561582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910162443.3A Active CN109798384B (en) | 2019-03-05 | 2019-03-05 | Valve body of polyethylene ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109798384B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110712338A (en) * | 2019-10-18 | 2020-01-21 | 余荣芳 | Production process of coated plastic tableware |
| CN112555500A (en) * | 2020-11-07 | 2021-03-26 | 胜利油田金岛工程安装有限责任公司 | Ultra-high molecular weight polyethylene valve group |
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|---|---|---|---|---|
| US4916938A (en) * | 1988-08-25 | 1990-04-17 | Atomic Energy Of Canada Limited | Valve leakage inspection, testing and maintenance process |
| DE4324401C1 (en) * | 1993-07-21 | 1994-07-21 | Hans Runkel Fa | Leakage testing device for gas pipeline |
| DE202013001237U1 (en) * | 2013-02-11 | 2013-03-08 | Armaturenfabrik Franz Schneider GmbH + Co. KG | Ball valve device |
| CN104265933A (en) * | 2014-09-09 | 2015-01-07 | 华英伦科技(宁波)有限公司 | Totally-closed anti-ageing corrosion-resistant and long-life ball valve |
| CN207229891U (en) * | 2017-08-25 | 2018-04-13 | 中石化川气东送天然气管道有限公司 | The ball valve of the test device of leakage and its composition in a kind of ball valve |
| CN109386628A (en) * | 2018-12-24 | 2019-02-26 | 宣琦 | A kind of valve for natural gas transportation |
-
2019
- 2019-03-05 CN CN201910162443.3A patent/CN109798384B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4916938A (en) * | 1988-08-25 | 1990-04-17 | Atomic Energy Of Canada Limited | Valve leakage inspection, testing and maintenance process |
| DE4324401C1 (en) * | 1993-07-21 | 1994-07-21 | Hans Runkel Fa | Leakage testing device for gas pipeline |
| DE202013001237U1 (en) * | 2013-02-11 | 2013-03-08 | Armaturenfabrik Franz Schneider GmbH + Co. KG | Ball valve device |
| CN104265933A (en) * | 2014-09-09 | 2015-01-07 | 华英伦科技(宁波)有限公司 | Totally-closed anti-ageing corrosion-resistant and long-life ball valve |
| CN207229891U (en) * | 2017-08-25 | 2018-04-13 | 中石化川气东送天然气管道有限公司 | The ball valve of the test device of leakage and its composition in a kind of ball valve |
| CN109386628A (en) * | 2018-12-24 | 2019-02-26 | 宣琦 | A kind of valve for natural gas transportation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110712338A (en) * | 2019-10-18 | 2020-01-21 | 余荣芳 | Production process of coated plastic tableware |
| CN112555500A (en) * | 2020-11-07 | 2021-03-26 | 胜利油田金岛工程安装有限责任公司 | Ultra-high molecular weight polyethylene valve group |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109798384B (en) | 2020-01-21 |
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Effective date of registration: 20191227 Address after: 518000 Xintang Village, No. 76, 201 and 301, Jutang Community, Fucheng Street, Longhua District, Shenzhen City, Guangdong Province (i.e. Building D, 2-3, Industrial Park 76) Applicant after: SHENZHEN DECHENGWANG TECHNOLOGY Co.,Ltd. Address before: 310003 8-5-202 Rouge village, lower city, Zhejiang, Hangzhou Applicant before: Huang Xuewen |
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Effective date of registration: 20231213 Address after: 516200 B1/F, 10-12/F, Building 7, Phase 1 (Zone 1), Meilong Lake Intelligent Manufacturing Industry New City, Xinyu, Huiyang District, Huizhou City, Guangdong Province Patentee after: Guangdong dechuangxin Materials Co.,Ltd. Address before: NO.201 and 301, Xintang village, Jutang community, Fucheng street, Longhua District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN DECHENGWANG TECHNOLOGY Co.,Ltd. |