CN101387365A - Pipe end opening blockage - Google Patents
Pipe end opening blockage Download PDFInfo
- Publication number
- CN101387365A CN101387365A CNA2008102249460A CN200810224946A CN101387365A CN 101387365 A CN101387365 A CN 101387365A CN A2008102249460 A CNA2008102249460 A CN A2008102249460A CN 200810224946 A CN200810224946 A CN 200810224946A CN 101387365 A CN101387365 A CN 101387365A
- Authority
- CN
- China
- Prior art keywords
- face
- edge face
- bearing head
- pressure bearing
- extruding
- 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
Images
Landscapes
- Pipe Accessories (AREA)
Abstract
The invention discloses a pipeline port stopper, which comprises a transmission lead screw, a bearing head, an actuator plate, an extruding bowl, at least two locking sliders and a packer ring, wherein the transmission lead screw is provided with a pin joint end, a threaded section and an operating end; the bearing head is pivoted with the pin joint end of the transmission lead screw; the actuator plate has a threaded hole which is matched with the threaded section of the transmission lead screw; the extruding bowl is arranged slidably between the bearing head and the actuator plate, and has an inclined sliding conical surface and an extruding end face; the locking sliders are linked the actuator plate, the lower surfaces of the locking sliders are axially and slidably matched with the sliding conical surface of the extruding bowl, and the locking sliders are driven by the actuator plate to ascend along the sliding conical surface and are locked in a radial expanding state; and the packer ring is arranged between the bearing head and the actuator plate, and is extruded by the extruding end face of the extruding bowl to be in the radial expanding state so as to realize plugging.
Description
Technical field
The present invention is relevant for a kind of plugging device in the pipeline maintenance operation capping tools of media such as aqueous hydrocarbon, especially about a kind of manual pipe end opening blockage that can realize shutoff and de-plugging at pipe end.
Background technique
Pipeline transport is most economical, the most rational means of transportation of petroleum gas.At present, China has formed a plurality of oil gas zone pipe network, and along with the fast development of energy industry, China's oil and gas pipes construction will continue to obtain significant progress.
Along with the increase of China's pipe laying length and the growth of Years Of Service, need carry out the intensity and the leak test of pipeline, i.e. bulge test to new and old pipeline.Traditional process of suppressing is that pipe end is welded closure plate, treat that bulge test is finished after, cut off the closure plate of pipe end.This tradition is suppressed process and is had following deficiency:
One, need the end plate of welding shutoff earlier, and then slice off end plate, the workload redundancy of suppressing process is loaded down with trivial details, and the shutoff operating efficiency is low.
Two, suppress the shutoff end plate of using at every turn, owing to can influence the structure of metal after the multiple welding, can't guarantee weldability when welding as end plate once more, sealing characteristics is unreliable, and the shutoff end plate can not reuse, shutoff maintenance cost height.
Three, need use welding equipment and carry out welding process, welding precision is had higher requirements, the welding process complexity, the shutoff operation is convenient, fast inadequately.
Summary of the invention
Technical problem to be solved by this invention provides a kind of pipe end opening blockage, can implement shutoff at pipe end, traditional bulge test can be saved and the redundancy of effort that shutoff slices off again need be welded, improve the shutoff operating efficiency greatly, and plugging device can repeatedly reuse, and the shutoff operation is also very simple and efficient.
A kind of pipe end opening blockage provided by the invention is characterized in that, includes:
One drive lead screw, described drive lead screw has pivot end, thread section and operating end;
One pressure bearing head is connected with the pivot end pivot of described drive lead screw;
One final controlling element dish has tapped hole, and described tapped hole is engaged on the thread section of described drive lead screw;
One extrusion bowl, being located between described pressure bearing head and the described final controlling element dish of slip, described extrusion bowl has tilted conical slide and extruding end face;
At least two lock sliders, with described final controlling element dish interlock mutually, the lower surface of described lock slider is engaged on the conical slide of described extrusion bowl axially slidably, and described lock slider is performed device dribbling kinetic energy and rises and be the radial dilatation state and lock along conical slide;
One packing circle is located between described pressure bearing head and the described final controlling element dish, and is subjected to the extruding end face extruding of described extrusion bowl and is radial expanded state and realizes shutoff.
According to such scheme, the present invention is significant with respect to the effect of existing structure: pipe end opening blockage of the present invention, can be under the situation that does not need welding equipment, the hand rotation drive lead screw, just can implement shutoff and de-plugging at pipe end, traditional bulge test can be saved and the redundancy of effort that shutoff slices off again need be welded, improve the shutoff operating efficiency greatly, and plugging device can repeatedly reuse, the shutoff operation is also very simple and efficient, and pipe end opening blockage of the present invention is particularly suitable for the high pressure pipe line shutoff.
Description of drawings
Fig. 1 is the structural representation of the pipe end opening blockage of embodiment of the present invention 1.
Fig. 2 is the structural representation of the pipe end opening blockage of embodiment of the present invention 2.
Fig. 3 is the stereogram of the lock slider among Fig. 2 of the present invention.
Fig. 4 is the structural representation of the pipe end opening blockage of embodiment of the present invention 3.
Embodiment
Mode of execution 1
As shown in Figure 1, a kind of pipe end opening blockage provided by the invention includes:
One drive lead screw 1, drive lead screw 1 have pivot end 11, thread section 12 and operating end 13, can be provided with perforation 131 on operating end 13, are beneficial to insert throw rod and rotate drive lead screw 1;
One pressure bearing head 2 is pivotally connected to the pivot end 11 of drive lead screw 1, and this pressure bearing head 2 has interior edge face 21, exterior edge face 23 and from interior edge face 21 axially extended first portion 22; Pivot end 11 is limited in the interior edge face 21 of pressure bearing head 2, to avoid producing the leakage problem of high-pressure medium; Specifically can on the interior edge face 21 that is positioned at first portion 22 inside of bearing disc 2, fix a supporting element 25, this supporting element 25 has the end plate 251 of support, pivot end 11 passes the inside of supporting end plate 251 and being positioned at this supporting element 25, pass a side that supports end plate 251 at pivot end 11 and be provided with stop member 7, in this mode of execution, supporting element 25 is a cylinder, this pivot end 11 passes support end plate 251 and stretches in cylinder, on this pivot end 11, be provided with outside thread 110, stop member 7 can be nut, admittedly pass on the outside thread 110 of a side that supports end plate 251 at pivot end 11 by this nut spiral shell, this stop member 7 just can contact support end plate 251 on the interior edge face 252 of the interior edge face 21 of bearing disc 2 like this, certainly the outside thread 110 on the pivot end 11 not necessarily, if optical axis, can be used as stop member 7 with snap ring,, not limit as long as can replace the pulling force that relative final controlling element dish 3 is provided to bearing disc 2 on the interior edge face 252 that supports end plate 251 by stop member 7;
One final controlling element dish 3 has tapped hole 30, and tapped hole 30 is engaged on the thread section 12 of drive lead screw 1; This final controlling element dish 3 has interior edge face 31 and is nested with mutually from interior edge face 31 32, the first portions 22 of axially extended second portion and second portion 32 and forms hollow chamber 8;
One extrusion bowl 4, being located between pressure bearing head 2 and the final controlling element dish 3 of slip, extrusion bowl 4 has tilted conical slide 41 and extruding end face 42, and extrusion bowl 4 is nested with the outer circumferential face in first portion 22 or second portion 32;
At least two lock sliders 5, with final controlling element dish 3 interlock mutually, the lower surface 51 of each lock slider 5 is engaged on the conical slide 41 of extrusion bowl 4 axially slidably, also spiral shell is solid in lock slider 5 preferably to pass final controlling element dish 3 by a plurality of uniform fastening pieces 34, wherein the through hole that passes for each fastening piece 34 on the final controlling element dish 3 must be the elongated hole 35 that radially extends, being performed device dish 3 at lock slider 5 drives can be in the direction up-slip shown in the conical slide 41 upper edge arrow A time, guarantee fastening piece 34 radially outwards action and lock slider 5 can be locked in the radial displacement expansion in elongated hole 35, and lock slider 5 needs by this fastening piece 34 lock slider 5 is pulled down during along conical slide 41 decline releases; In lock slider 5 side parallel the radial location pin need be set and decide element with arrow A, dally on conical slide 41 to guarantee that final controlling element dish 3 can not drive lock slider 5 when drive lead screw 1 rotates, thereby can't make locking slide 5 along conical slide 41 risings or decline;
One packing circle 6 is located between pressure bearing head 2 and the final controlling element dish 3, and packing circle 6 is by medium-hard elastic material manufacturing, and extruding end face 42 extruding of the bowl 4 that is squeezed and be radial expanded state and realize shutoff.
As described in Figure 1, in a preferred embodiment, be make pressure bearing head 2 and final controlling element dish 3 in opposite directions near the action state the time, lock slider 5 is locked along conical slide 41 risings of extrusion bowl 4, in the middle of this structure, packing circle 6 is folded between the extruding end face 42 of the interior edge face 21 of pressure bearing head 2 and extrusion bowl 4.Certainly, according to symmetry principle, can consider to make pressure bearing head 2 and final controlling element dish 3 opposing to the time away from the state of action, allow lock slider 5 lock along conical slide 41 risings of extrusion bowl 4, in the middle of this structure, need the inclination aspect of conversion conical slide 41, packing circle 6 will be folded between the extruding end face 42 of the interior edge face 31 of final controlling element dish 3 and extrusion bowl 4.Certain this structure can make the volume of whole plugging device relatively large, is not preferred.
As shown in Figure 1, the exterior edge face 111 of this pivot end 11 has certain distance apart from the interior edge face 21 of pressure bearing head 2, pressure medium can promote pressure bearing head 2 and moves to the direction near the exterior edge face 111 of this pivot end 11 when high-pressure medium acts on pressure bearing head 2 like this, packing circle 6 is more outwards expanded, sealing and clamping ability will be kept or strengthen to the pressure reduction at plugging device two ends, makes plugging device realize the pressure reduction self-locking thereby further push packing circle 6.The shaft diameter of this pivot end 11 is less than the shaft diameter of thread section 12, thereby form positioning step 72 between the axle of the axle of pivot end 11 and thread section 12, this positioning step 72 can contact supports on the exterior edge face 253 of end plate 25 to have no limits relative to drive lead screw 1 with restriction pressure bearing head 2 and moves.
As described in Figure 1, in a preferred embodiment, lock slider 5 comprises eight and along the circumferential direction evenly distribute, to guarantee the latching force equilibrium, certainly other for example three, four, five, six, seven etc. all can, do not limit; As shown in Figure 3, each lock slider 5 is preferably by the Hard Alloy Steel manufacturing, working life is longer relatively, outer surface at lock slider 5 is provided with locking screw thread 53, locking screw thread 53 can thrust inner-walls of duct after radial dilatation, because lock slider 5 and inner surface of pipeline even contact, have only several microns so thrust the degree of depth, this thrust the degree of depth API to the cut of inner surface of pipeline within tolerance zone, like this can the equalizing main internal pressure to the thrust of plugging device, make plugging device be fixed on pipe end and can not move, realize locking reliably.
As shown in Figure 1, in a preferred embodiment, the interior edge face 21 of pressure bearing head 2 and the extruding end face of extrusion bowl 4 42 are the inclined-plane, and the distance that the extruding end face 42 of the inclined-plane of pressure bearing head 2 and extrusion bowl 4 points to along the axle center on the direction of far-end radially increases gradually.Like this when pressure bearing head 2 and the 6 formation clamping extruding of 4 pairs of packing circles of extrusion bowl, can apply axial pressure to the stressed end face 61 of packing circle 6 axial both sides, because two inclined-planes can produce radially outer component, make packing circle 6 easier radial expansions and form high press contacts with inner surface of pipeline and medium in the sealed pipe, realized shutoff, and because the effect on these two inclined-planes, in case plugging device radial expansion and contact with inner surface of pipeline realizes after the shutoff, the extruding force or the medium differential pressure of packing circle 6 both sides are big more, the component that the footpath makes progress is big more, the packing circle is more outwards expanded, sealing and clamping ability will be kept or strengthen to the pressure reduction at plugging device two ends, is easier to make plugging device to form the pressure reduction auto-lock function.
As shown in Figure 1, in a preferred embodiment, packing circle 6 is made by medium-hard elastic material, preferred polyurethane, and the easy and living reaction of fry dried food ingredients compared to the rubber packing circle of routine, polyurethane packing circle can be applicable to all high-pressure mediums such as oil, gas, water.Preferred packing circle 6, the stressed end face 61 of its axial both sides is the inclined-plane, match with the inclined-plane of the extruding end face 42 of the inclined-plane of the interior edge face 21 of pressure bearing head 2 and extrusion bowl 4 respectively, under inclined-plane clamping squeezed state, packing circle 6 be easier to radial expansion and with the high press contacts of tube wall, be easier to make plugging device to form the pressure reduction auto-lock function.Certainly, the stressed end face 61 of the interior edge face 21 of pressure bearing head 2, the extruding end face 42 of extrusion bowl 4 and packing circle 6 can not be the inclined-plane also, but normal vertical plane, can only expand by the distortion of packing circle 6 and realize the pressure reduction self-locking this moment.
When shutoff, only need to rotate the operating end 13 of drive lead screw 1, because of being connected on the pressure bearing head 2 that pivot end 11 pivots, therefore the rotation of drive lead screw 1 will drive the final controlling element dish 3 that is engaged on its thread section 12 and moves, further can drive lock slider 5 and rise and radial dilatation realizes locking, simultaneously the extruding end face 42 co-extrusion packing circles 6 of the interior edge face 21 of pressure bearing head 2 and extrusion bowl 4 and make its radial expansion and form high press contacts and realize shutoff with inner surface of pipeline along conical slide 41.When de-plugging, only need backward rotation drive lead screw 1, just can drive lock slider 5 unlocks along conical slide 41 declines, the extruding end face 42 of the interior edge face of pressure bearing head 2 and extrusion bowl 4 discharges packing circle 6 and makes its realization de-plugging that radially bounces back simultaneously, traditional bulge test can be saved and the redundancy of effort that shutoff slices off again need be welded, improve the shutoff operating efficiency greatly, and plugging device can reuse repeatedly, the shutoff operation is also very simple and efficient.
Mode of execution 2
Shown in Fig. 2,3, structure, principle and the effect of this mode of execution and mode of execution 1 are basic identical, no longer repeat, and improvements are:
The conical slide 41 of extrusion bowl 4 and the lower surface 51 of lock slider 5 are provided with the guide structure 9 of the concavo-convex cooperation of extending vertically, this guide structure 9 comprises the raised line 91 on the lower surface 51 1 that is located at conical slide 41 and whole lock sliders 5, with be located at corresponding groove 92 on another person, that is to say on conical slide 41 a plurality of raised lines or groove need be set, and a corresponding groove or raised line are set respectively on each lower surface of each lock slider 5, for example can on the conical slide 41 of extrusion bowl 4, raised line 91 be set, and a groove 92 being set at the lower surface 51 of each lock slider 5, groove 92 can be processed with milling machine; Can certainly make raised line 91 and groove 92 location swaps.Guide structure 9 not only can guarantee that lock slider 5 slides along predetermined direction, also can play the effect that lock slider 5 is connected with extrusion bowl 4, and can limit lock slider 5 by this guide structure 9 and take place radially to rotate, needn't be provided with and be used in the mode of execution 1 guaranteeing that the radial location pin that idle running takes place lock slider 5 decides element.The cross section of raised line 91 and groove 91 preferably is swallow-tail form, for connecting lock slider 5 and extrusion bowl 4 better effects if.
Operating end 13 at drive lead screw 1 is installed with baffle plate 8, can be stuck in pipe end when shutoff, can prevent that plugging device enters in the pipe fully; Pass on a baffle plate 8 and the side in operating end 13 and to be provided with stop member 7 away from thread section 12, these stop member 7 contacts are on the exterior edge face 81 of baffle plate 8, preferably 13 be provided with outside thread 132 in the operating end, this moment, stop member 7 be a nut, and spiral shell is consolidated in operating end 13 and passed on the outside thread 132 of a side of baffle plate 8.Certainly the outside thread 132 on the operating end 13 not necessarily, can be optical axis shown in Figure 1 fully, this moment, available snap ring was used as stop member 7, can be replaced by stop member 7 and avoid baffle plate 8 13 to come off and get final product from the operating end on the outer side surface 81 of baffle plate 8, did not limit.
A plurality of for example eight uniform supporting wheels that have spring 24 are set in the exterior edge face 23 of pressure bearing head 2, can make plugging device enter pipeline smoothly, can avoid owing to the plugging device action of gravity makes the wearing and tearing of packing circle, distortion of its underpart and the deficiency that pipeline below wall portion is caused damage.
Mode of execution 3
As shown in Figure 4, this mode of execution is identical with structure, principle and the effect of mode of execution 2, and difference is:
The concrete form of supporting element 25 changes.Supporting element 25 is not a cylinder in this mode of execution, but a U type frame can be provided with the support end plate 251 that is strip on this U type frame equally, and this hub switch side 11 is passed this support end plate 251 and stretched in the U type frame.Certainly, supporting element 25 among the present invention is not limited to tubular in the mode of execution 1 or the U type frame in the present embodiment, any other link, for example support end plate 251 by three pillars or four one of shore supports, such link also is fine, do not limit, any supporting frame of the pulling force of pressure bearing head 2 relative final controlling element dishes 3 that can provide all can adopt.
The raised line 91 of guide structure 9 is not directly to mill to make on the slidingsurface 41 of extrusion bowl 4, but be fixed on the slidingsurface 41 by the raised line 91 of fastening pin member 911 with a plurality of independent processing, can adopt the hardness than minor diameter so is not that very high steel are processed extrusion bowl 4, and only make raised line 91 adopt the bigger Hard Alloy Steel of hardness to make, can improve wear-resisting property, increase the service life, the cost of whole plugging device is reduced.
But the above; it only is the specific embodiment of the present invention; when not limiting scope of the invention process with this; all equivalent variations and modifications of doing according to summary of the invention of the present invention; be that anyone adopts drive lead screw to drive bearing disc and final controlling element dish generation relative displacement makes lock slider realize locking, all should belong to protection scope of the present invention.
Claims (12)
1. a pipe end opening blockage is characterized in that, includes:
One drive lead screw, described drive lead screw has pivot end, thread section and operating end;
One pressure bearing head is connected with the pivot end pivot of described drive lead screw;
One final controlling element dish has tapped hole, and described tapped hole is engaged on the thread section of described drive lead screw;
One extrusion bowl, being located between described pressure bearing head and the described final controlling element dish of slip, described extrusion bowl has tilted conical slide and extruding end face;
At least two lock sliders, with described final controlling element dish interlock mutually, the lower surface of described lock slider is engaged on the conical slide of described extrusion bowl axially slidably, and described lock slider can be performed that the device dribbling is moving rises and be the radial dilatation state and lock along conical slide;
One packing circle is located between described pressure bearing head and the described final controlling element dish, and is subjected to the extruding end face extruding of described extrusion bowl and is radial expanded state and realizes shutoff.
2. pipe end opening blockage according to claim 1, it is characterized in that, described pressure bearing head has interior edge face, exterior edge face and from axially extended first portion of described interior edge face, described final controlling element dish has interior edge face, exterior edge face and from axially extended second portion of described interior edge face, described first portion and second portion are nested with mutually and form a hollow chamber, and described extrusion bowl is nested with the outer circumferential face in described first portion or second portion.
3. pipe end opening blockage according to claim 2, it is characterized in that, when the state that described pressure bearing head and final controlling element dish move in opposite directions, described lock slider rises along the conical slide of extrusion bowl, the packing circle is folded between the extruding end face of the interior edge face of pressure bearing head and extrusion bowl, and there is certain distance the exterior edge face of the pivot end of described drive lead screw apart from the interior edge face of pressure bearing head.
4. pipe end opening blockage according to claim 3 is characterized in that, described lock slider comprises four to eight and along the circumferential direction evenly distribute, and is provided with locking screw thread at the outer surface of lock slider; On described final controlling element dish, be provided with the radially-arranged elongated hole of a plurality of each lock sliders of correspondence, pass each described elongated hole and be connected on each lock slider by a plurality of fastening pieces.
5. pipe end opening blockage according to claim 3, it is characterized in that, the conical slide of described extrusion bowl and the lower surface of lock slider are provided with the guide structure of the concavo-convex cooperation of extending vertically, described guide structure comprises the raised line on the lower surface that is located at conical slide and whole lock sliders and is located at corresponding groove on another person.
6. pipe end opening blockage according to claim 5 is characterized in that the cross section of described raised line and groove is swallow-tail form.
7. pipe end opening blockage according to claim 3, it is characterized in that, the extruding end face of the interior edge face of described pressure bearing head and extrusion bowl is the inclined-plane, the distance that the extruding end face of the interior edge face of pressure bearing head and extrusion bowl points to along the axle center on the direction of far-end radially increases gradually, the stressed end face of the axial both sides of packing circle is the inclined-plane, matches with the interior edge face of described pressure bearing head and the extruding end face of extrusion bowl respectively.
8. pipe end opening blockage according to claim 7 is characterized in that, described packing circle is made by polyurethane, and described lock slider is made by Hard Alloy Steel.
9. pipe end opening blockage according to claim 3 is characterized in that, circumferentially uniform supporting wheel of a plurality of edges is set in the exterior edge face of pressure bearing head.
10. according to any described pipe end opening blockage in the claim 1～9, it is characterized in that, described operating end is provided with baffle plate, passes on described baffle plate and the side away from thread section in described operating end and is provided with stop member, and this stop member is resisted against the exterior edge face of described baffle plate.
11. pipe end opening blockage according to claim 10, it is characterized in that, on the interior edge face that is positioned at first portion inside of described bearing disc, fix a supporting element, this supporting element has the support end plate, described pivot end passes the support end plate and is positioned at this supporting element inside, passes a side that supports end plate at pivot end and is provided with stop member.
12. pipe end opening blockage according to claim 11, it is characterized in that described supporting element is cylinder or is U type frame that this pivot end is provided with outside thread, described stop member is a nut, and described nut spiral shell passes on the outside thread of a side that supports end plate at described pivot end admittedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102249460A CN101387365B (en) | 2008-10-28 | 2008-10-28 | Pipe end opening blockage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102249460A CN101387365B (en) | 2008-10-28 | 2008-10-28 | Pipe end opening blockage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101387365A true CN101387365A (en) | 2009-03-18 |
| CN101387365B CN101387365B (en) | 2010-08-25 |
Family
ID=40476931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102249460A Expired - Fee Related CN101387365B (en) | 2008-10-28 | 2008-10-28 | Pipe end opening blockage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101387365B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865385A (en) * | 2011-07-05 | 2013-01-09 | 上海大众燃气有限公司 | Gas stand pipe plugging device |
| CN103047509A (en) * | 2012-12-24 | 2013-04-17 | 中国石油大学(北京) | Locking device of stopper inside pipe |
| CN104295851A (en) * | 2014-10-13 | 2015-01-21 | 北京市燃气集团有限责任公司 | Pipe fitting blocking device of fluid pipeline |
| CN105179871A (en) * | 2015-09-22 | 2015-12-23 | 浙江尚进电力科技有限公司 | Pipe hole blocking device |
| CN107883109A (en) * | 2017-11-10 | 2018-04-06 | 中船黄埔文冲船舶有限公司 | A kind of close examination sealing tool of ship pipe |
| CN109027508A (en) * | 2018-09-29 | 2018-12-18 | 东方电气集团东方锅炉股份有限公司 | Outer wall is the mechanical seal protective device of skewed big adapter tube |
| CN109282106A (en) * | 2018-11-13 | 2019-01-29 | 北京实利信达仪器设备有限公司 | A kind of plugging device and plugging device |
| CN109780363A (en) * | 2017-11-14 | 2019-05-21 | 中国石油天然气集团公司 | A kind of plugging device |
| CN110425372A (en) * | 2019-07-30 | 2019-11-08 | 南京兆能节能科技有限公司 | A kind of pre- apparatus for heat sealing of circumferential extension formula being easily installed and its application method |
| CN110578852A (en) * | 2019-09-23 | 2019-12-17 | 中国石油大学(华东) | Intelligent pipeline plugging device and plugging method thereof |
| CN110792872A (en) * | 2019-10-24 | 2020-02-14 | 中冶天工集团天津有限公司 | Novel inspection well pipeline plugging device and using method |
| CN111577894A (en) * | 2020-05-27 | 2020-08-25 | 福建宁德核电有限公司 | Prevent foreign matter plugging device suitable for multiple bore |
| CN112460372A (en) * | 2020-12-12 | 2021-03-09 | 江西洪都航空工业集团有限责任公司 | Self-locking type aircraft conduit plug structure |
| CN116819053A (en) * | 2023-08-29 | 2023-09-29 | 辽宁省路桥建设集团有限公司 | Online detection device and detection method for water content of concrete aggregate |
-
2008
- 2008-10-28 CN CN2008102249460A patent/CN101387365B/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865385A (en) * | 2011-07-05 | 2013-01-09 | 上海大众燃气有限公司 | Gas stand pipe plugging device |
| CN103047509A (en) * | 2012-12-24 | 2013-04-17 | 中国石油大学(北京) | Locking device of stopper inside pipe |
| CN103047509B (en) * | 2012-12-24 | 2014-10-29 | 中国石油大学(北京) | Locking device of stopper inside pipe |
| CN104295851A (en) * | 2014-10-13 | 2015-01-21 | 北京市燃气集团有限责任公司 | Pipe fitting blocking device of fluid pipeline |
| CN105179871A (en) * | 2015-09-22 | 2015-12-23 | 浙江尚进电力科技有限公司 | Pipe hole blocking device |
| CN107883109A (en) * | 2017-11-10 | 2018-04-06 | 中船黄埔文冲船舶有限公司 | A kind of close examination sealing tool of ship pipe |
| CN109780363A (en) * | 2017-11-14 | 2019-05-21 | 中国石油天然气集团公司 | A kind of plugging device |
| CN109027508A (en) * | 2018-09-29 | 2018-12-18 | 东方电气集团东方锅炉股份有限公司 | Outer wall is the mechanical seal protective device of skewed big adapter tube |
| CN109027508B (en) * | 2018-09-29 | 2023-12-08 | 东方电气集团东方锅炉股份有限公司 | Mechanical seal protection device with inclined large connecting pipe on outer wall |
| CN109282106B (en) * | 2018-11-13 | 2023-08-22 | 北京实利信达仪器设备有限公司 | Plugging device and plugging device |
| CN109282106A (en) * | 2018-11-13 | 2019-01-29 | 北京实利信达仪器设备有限公司 | A kind of plugging device and plugging device |
| CN110425372A (en) * | 2019-07-30 | 2019-11-08 | 南京兆能节能科技有限公司 | A kind of pre- apparatus for heat sealing of circumferential extension formula being easily installed and its application method |
| CN110578852A (en) * | 2019-09-23 | 2019-12-17 | 中国石油大学(华东) | Intelligent pipeline plugging device and plugging method thereof |
| CN110578852B (en) * | 2019-09-23 | 2021-08-27 | 中国石油大学(华东) | Intelligent pipeline plugging device and plugging method thereof |
| CN110792872A (en) * | 2019-10-24 | 2020-02-14 | 中冶天工集团天津有限公司 | Novel inspection well pipeline plugging device and using method |
| CN110792872B (en) * | 2019-10-24 | 2024-06-07 | 中冶天工集团天津有限公司 | Novel inspection well pipeline plugging device and use method |
| CN111577894A (en) * | 2020-05-27 | 2020-08-25 | 福建宁德核电有限公司 | Prevent foreign matter plugging device suitable for multiple bore |
| CN112460372A (en) * | 2020-12-12 | 2021-03-09 | 江西洪都航空工业集团有限责任公司 | Self-locking type aircraft conduit plug structure |
| CN112460372B (en) * | 2020-12-12 | 2022-03-15 | 江西洪都航空工业集团有限责任公司 | Self-locking type aircraft conduit plug structure |
| CN116819053A (en) * | 2023-08-29 | 2023-09-29 | 辽宁省路桥建设集团有限公司 | Online detection device and detection method for water content of concrete aggregate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101387365B (en) | 2010-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101387365B (en) | Pipe end opening blockage | |
| CN201306574Y (en) | Pipe end port plugging device | |
| CN101377259B (en) | Intelligent plugging device in tube | |
| CN102966327B (en) | expansion pipe | |
| CN207213494U (en) | A kind of New tube cleaning arrangement | |
| CN113231857A (en) | Fixing device based on stainless steel cutting | |
| CN111438284A (en) | Hydraulic pipe expanding device | |
| CN105987175A (en) | Mechanical sealing structure with combination of various holes and three-dimensional snowflake-shaped grooves | |
| CN103047509A (en) | Locking device of stopper inside pipe | |
| CN105922553A (en) | Composite pipe flaring mold | |
| CN202970603U (en) | Liner hanger seal box | |
| CN201803014U (en) | U-shaped tube hydrostatic testing tooling | |
| CN103470790A (en) | Three eccentric metal seal butterfly valve | |
| CN203585359U (en) | Triple-eccentric metal sealing butterfly valve | |
| CN114856489A (en) | Skid-mounted profile control high-pressure injection pipe structure | |
| CN206376811U (en) | Expansion type tubing plug | |
| CN206366611U (en) | A kind of new-type of hose buckle machine | |
| CN221249020U (en) | Pipeline cutting machine for pressure pipeline installation construction | |
| CN111140172A (en) | Horizontal spiral drilling machine with buffering effect | |
| CN202972363U (en) | In-pipe stopper locking device | |
| CN220013938U (en) | Inspection well interface with nest groove elastic sealing ring | |
| CN220303037U (en) | Oil transportation pipeline capable of preventing oil leakage | |
| CN202970608U (en) | expansion pipe | |
| CN202090857U (en) | Novel sucker rod centering device | |
| CN112032421B (en) | Special high-strength pipeline fastener |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20111028 |