CN109140111A - A kind of sealing structure for mechanical three-way - Google Patents

A kind of sealing structure for mechanical three-way Download PDF

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Publication number
CN109140111A
CN109140111A CN201710458185.4A CN201710458185A CN109140111A CN 109140111 A CN109140111 A CN 109140111A CN 201710458185 A CN201710458185 A CN 201710458185A CN 109140111 A CN109140111 A CN 109140111A
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CN
China
Prior art keywords
group
pair
seal
female seat
sealing
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.)
Pending
Application number
CN201710458185.4A
Other languages
Chinese (zh)
Inventor
王国超
李德宝
郝新伟
赵丽
戚雪辉
赵东辉
杨旭
陈社鹏
刘博�
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Petroleum Corp
China Petroleum Pipeline Engineering Corp
Original Assignee
China National Petroleum Corp
China Petroleum Pipeline Engineering Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China National Petroleum Corp, China Petroleum Pipeline Engineering Corp filed Critical China National Petroleum Corp
Priority to CN201710458185.4A priority Critical patent/CN109140111A/en
Publication of CN109140111A publication Critical patent/CN109140111A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/179Devices for covering leaks in pipes or hoses, e.g. hose-menders specially adapted for bends, branch units, branching pipes or the like

Abstract

The invention discloses a kind of sealing structures for mechanical three-way, belong to oil-gas pipeline field.The sealing structure includes: at least a pair of of male seal group, at least a pair of of female seat group and at least a pair of of axial seal;The male seal part is identical as the female seat number of packages amount, and at least a pair of of male seal group, at least a pair of of female seat group and at least a pair of of axial seal correspond;In use state, a pair of of male seal group and a pair of of female seat group form a pair of circumferential sealing group, it is radially symmetrically distributed in two sides inside mechanical three-way respectively, the both ends of a pair of of axial seal are connect with the outer side seal of the seam crossing of a pair of circumferential sealing group, and a pair of of axial seal is axially symmetric and is parallel to each other.The present invention by least a pair of of male seal group, at least a pair of of female seat group and at least a pair of of axial seal composition at least together with solid space effective sealing, avoid the leakage phenomenon between the inner surface of mechanical three-way and the outer surface of oil-gas pipeline.

Description

A kind of sealing structure for mechanical three-way
Technical field
The present invention relates to oil-gas pipeline field, in particular to a kind of sealing structure for mechanical three-way.
Background technique
Oil-gas pipeline is known as the lifeline of oil gas field, in the transmission process of oil gas, the safe and reliable fortune of oil-gas pipeline Row is the basic assurance of production of hydrocarbons.Micro member contained by the complexity of the natural environment as locating for oil-gas pipeline, oil gas product The case where element and pipeline itself, the destruction of oil-gas pipeline is always inevitable.After oil-gas pipeline destruction, it can be used Dimension repairing equipment is repaired, and during tieing up first-aid repair construction, mechanical three-way is very important equipment.
In the dimension first-aid repair construction of oil-gas pipeline, especially in the oil-gas pipeline dimension repairing operation of non-solder condition, only Mechanical three-way can be selected as necessary repairing equipment.Since mechanical three-way includes upper housing and lower case, the upper housing and Lower case is installed on the tapping of oil-gas pipeline in a manner of encircling, and therefore, when installing mechanical three-way, bolt spiral shell can be used The upper housing and lower case is fixed in mother plus check washer.However, since mechanical three-way and oil-gas pipeline are rigid body, Therefore, it inevitably will appear leakage problem between the inner surface of mechanical three-way and the outer surface of oil-gas pipeline.
Summary of the invention
In order to solve the problems, such as the relevant technologies, the embodiment of the invention provides a kind of sealing structures for mechanical three-way. The technical solution is as follows:
This application provides a kind of sealing structure for mechanical three-way, the sealing structure includes: at least a pair of of convex Sealing group, the male seal group include at least one male seal part;At least a pair of of female seat group, the female seat group Including at least one female seat part;And at least a pair of of axial seal;
The male seal part is identical as the female seat number of packages amount, at least a pair of of male seal group, it is described extremely Few a pair of female seat group and at least a pair of of axial seal correspond;
In use state, a pair of of male seal group and a pair of of female seat group form a pair of circumferential sealing group, a pair of of axis It is connect to the both ends of sealing element with the outer side seal of the seam crossing of the pair of circumferential sealing group, the pair of axial seal axis To symmetrical and be parallel to each other.
Optionally, the male seal part refers to that both ends are the sealing element of tongue, or refers to close by least two oblique angles The both ends of sealing composition are the sealing element of convex, and the oblique angle sealing element refers in tensional state between end face and cross section Angle is the sealing element of predetermined angle;
The female seat part refers to that both ends are the sealing element of groove, or refers to and be made of at least two oblique angle sealing elements Both ends be spill sealing element.
Optionally, the axial seal includes the axial seal of rectangular section and the axial seal of semi-circular cross-section Part;
The both ends of the axial seal of the rectangular section are connect with the outside of one end of a pair of of male seal group, and described The axial seal of rectangular section is located at the same side of the pair of male seal group, the axial seal of the semi-circular cross-section Both ends connect with the outside of one end of a pair of of female seat group, and the axial seal of the semi-circular cross-section is positioned at described one To the same side of female seat part;Alternatively,
The both ends of the axial seal of the rectangular section are connect with the outside of one end of a pair of of female seat group, and described The axial seal of rectangular section is located at the same side of the pair of female seat group, the axial seal of the semi-circular cross-section Both ends connect with the outside of one end of a pair of of male seal group, and the axial seal of the semi-circular cross-section is positioned at described one To the same side of male seal part.
Optionally, the both ends of the axial seal are S-shaped.
Optionally, the male seal group and the female seat group are semi-circular shapes.
Optionally, further include at least one straight angle sealing element in the male seal group, also wrapped in the female seat group Include at least one straight angle sealing element, the straight angle sealing element refers to be parallel to each other between end face and cross section in tensional state Sealing element.
Optionally, for the male seal group, the sealing structure further includes the steel loop of two l-shaped cross sections, described The steel loop of two l-shaped cross sections is located at the two sides of the male seal group, to be close to and wrap up the male seal group.
Optionally, for the female seat group, the sealing structure further includes the steel loop of two l-shaped cross sections, described The steel loop of two l-shaped cross sections is located at the two sides of the female seat group, to be close to and wrap up the female seat group.
Technical solution provided in an embodiment of the present invention has the benefit that in embodiments of the present invention, is using shape When state, male seal group and female seat group form ring packing group, and since male seal group includes male seal part, spill is close Envelope group includes concave sealing element, increases the contact area of the seam crossing for the ring packing group to be formed, so as to form effective Circumferential direction sealing.Further more, the both ends of axial seal are with the outer side seal of the seam crossing of circumferential sealing group by connecting, in machinery three In logical installation process, by the extruding to circumferential sealing group and axial seal, the effective solution axial direction of mechanical three-way The problem of being leaked at sealing and circumferential sealing joints.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing.
Fig. 1 is a kind of sealed structural schematic diagram figure for mechanical three-way provided in an embodiment of the present invention;
Fig. 2 (a) is a kind of top view of sealing structure for mechanical three-way provided in an embodiment of the present invention;
Fig. 2 (b) is a kind of sectional view of sealing structure for mechanical three-way provided in an embodiment of the present invention;
Fig. 3 is a kind of structural schematic diagram of axial seal provided in an embodiment of the present invention;
Fig. 4 is the structural schematic diagram of another axial seal provided in an embodiment of the present invention;
Fig. 5 is the structural schematic diagram of a kind of male seal group and female seat group provided in an embodiment of the present invention;
Fig. 6 is a kind of structural schematic diagram of oblique angle sealing element provided in an embodiment of the present invention;
Fig. 7 is a kind of structural schematic diagram of straight angle sealing element provided in an embodiment of the present invention;
Fig. 8 is a kind of structural schematic diagram of L shape steel loop provided in an embodiment of the present invention.
Appended drawing reference:
1: male seal group;11: male seal part;12: straight angle sealing element;
2: female seat group;21: female seat part;22: straight angle sealing element;
3: axial seal;4:L shape steel loop.
A-A: the axial, cross-sectional view of sealing structure;G-G: the sectional view of axial seal;H1:S curved height;H2:S is curved Highly;α: S curved angle;β: S curved angle.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention Formula is described in further detail.
Fig. 1 is a kind of sealed structural schematic diagram for mechanical three-way provided in an embodiment of the present invention.Referring to Fig. 1, this is close Seal structure includes:
At least a pair of of male seal group 1, male seal group 1 includes at least one male seal part 11;
At least a pair of of female seat group 2, female seat group 2 includes at least one female seat part 21;And
At least a pair of of axial seal 3;
Male seal part 11 is identical as 21 quantity of female seat part, and at least a pair of of male seal group 1, at least a pair of of spill are close Envelope group 2 and at least a pair of of axial seal 3 correspond;
In use state, a pair of of male seal group 1 and a pair of of female seat group 2 form a pair of circumferential sealing group, a pair of The both ends of axial seal 3 are connect with the outer side seal of the seam crossing of the circumferential sealing group of a pair, and a pair of of axial seal 3 is axial Symmetrically and it is parallel to each other.
In embodiments of the present invention, male seal group 1 and female seat group 2 can form ring packing group, due to convex Sealing group 1 includes male seal part 11, and female seat group 2 includes concave sealing element 21, makes the seam of ring packing group to be formed The contact area at place increases, so as to form effective circumferential sealing.Further more, the both ends of axial seal 3 pass through it is close with circumferential direction The outer side seal of the seam crossing of envelope group connects, and so as to form effective axial seal, in the installation process of mechanical three-way, leads to Cross the extruding to male seal group 1, female seat group 2 and axial seal 3, the effective solution axial seal of mechanical three-way The problem of with being leaked at circumferential sealing joints.
Wherein, the connection type of male seal group 1 and female seat group 2 are formed circumferential sealing group and axial seal, As shown in Fig. 2 (a) and Fig. 2 (b), for the top view and Section A-A figure of the seal architectures.
Further, in use state, since a pair of of male seal group 1 and a pair of of female seat group 2 can form one To circumferential sealing group, and a pair of of axial seal 3 can form effective sealing of solid space together with a pair of circumferential sealing group, Therefore, at least a pair of of male seal group 1, at least a pair of of female seat group 2 and at least a pair of of axial seal 3 can be with an a pair It answers.It that is to say, the quantity phase of at least a pair of of male seal group 1, at least a pair of of female seat group 2 and at least a pair of of axial seal Together.
For the ease of the installation of mechanical three-way, which may include that upper housing and lower case before the mounting can A pair of of male seal group 1 is fixed on upper housing in advance, concave sealing group 2 is fixed on lower case;It can also in advance will be convex Shape sealing group 1 is fixed on lower case, and female seat group 2 is fixed on upper housing.
Further, during the installation process, a pair of of axial seal can be placed under the upper housing and this by operator The seam crossing of enclosure interior two sides, and it is close with the seam crossing of male seal group 1 and the ring packing group of the formation of female seat group 2 Contact, it is close to squeeze male seal group 1, female seat group 2 and axial direction by being fastenedly connected to the upper housing and the lower case Sealing 3, to increase the contact area of male seal group 1 and female seat group 2, the effective solution axial direction of mechanical three-way Leakage problem at sealing and circumferential sealing joints.
In order to which effective sealing, axial seal are realized in the corner preferably to the upper housing of mechanical three-way and lower case 3 both ends can be S-shaped.
Wherein, the angle and height of the bent angle of the S-shaped between each pair of axial seal 3 can not be identical, for example, such as Fig. 3 Shown, when the sealing structure includes two pairs of axial seals 3, the bent angle α that two pairs of axial seals 3 are formed, which can be, to be not less than 30 degree and it is not more than 45 degree, bent angle β can be not less than 35 degree and be not more than 45 degree.The S of two pairs of axial seals 3 curved height h1Less than h2, and the curved height of S is determined according to the outer diameter and wall thickness of mechanical three-way.
Certainly, as shown in figure 4, the both ends of the axial seal 3 are also possible to L shape, to increase axial seal and circumferential direction The contact area of sealing element, wherein L-shaped height is determined based on the outer diameter and wall thickness of mechanical three-way.
In addition, in order to realize effective sealing at the interface of upper housing and lower case to the mechanical three-way, such as Fig. 3 institute Show, the cross section G-G of axial seal 3 can be half rectangle and half is semicircle.
Further, in order to save set-up time of mechanical three-way, axial seal 3 may include the axial direction of rectangular section Sealing element 31 and the axial seal of semi-circular cross-section 32, in order to before mechanical three-way is installed, in advance by rectangular section The both ends of axial seal 31 are connect with the outside of one end of a pair of of male seal group, and the axial seal of rectangular section 31 In the same side of a pair of of male seal group, by the both ends of the axial seal 32 of semi-circular cross-section and the one of a pair of of female seat group The outside at end connects, and the axial seal 32 of semi-circular cross-section is located at the same side of a pair of of female seat part;Alternatively,
The both ends of the axial seal 31 of rectangular section are connect with the outside of one end of a pair of of female seat group, and rectangle The axial seal 31 in section is located at the same side of the pair of female seat group, by the axial seal 32 of semi-circular cross-section Both ends are connect with the outside of one end of a pair of of male seal group, and the axial seal 32 of semi-circular cross-section is positioned at the pair of convex The same side of shape sealing element.
After the axial seal 3 for having introduced the sealing structure, next to 1 He of male seal group of the sealing structure Female seat group 2 describes in detail.
A pair of of male seal group 1 includes two male seal groups 1, and a pair of of female seat group 2 includes two female seat groups 2, when a pair of of male seal group 1, a pair of of female seat group 2 and a pair of of axial seal 3 are used cooperatively, can be formed vertical together Effective sealing in body space.Therefore, when the sealing structure includes 1, two pair of female seat group 2 and two of at least two pairs of male seal groups When to axial seal group 3, which can form effective sealing of at least twice solid space, thereby may be ensured that machinery The sealing performance of threeway.
Wherein, male seal group 1 and female seat group 2 can be placed in the upper and lower casing of mechanical three-way, the upper and lower casing Pipeline external surface is installed on by way of encircling.Therefore, male seal group 1 and female seat group 2 may each be semi-circular shape.
Further, the male seal part 11 that male seal group 1 includes can refer to that both ends are the sealing element of tongue, can also To refer to the both ends being made of at least two oblique angle sealing elements as the sealing element of convex;The female seat that female seat group 2 includes Part 21 can refer to that both ends are the sealing element of groove, may also mean that by the both ends that at least two oblique angle sealing elements form be spill Sealing element.
When male seal part 11 refers to that both ends are the sealing element of tongue, female seat part 21 refers to that both ends are the close of groove Sealing, and the salient angle of the tongue of male seal part 11 is identical as the re-entrant angle of the groove of female seat part 21.When end face is tongue When male seal part 11 and end face are that the concave sealing element 21 of groove is used cooperatively, so that male seal group 1 and female seat group 2 End face be in close contact, and increase contact area.
As shown in figure 5, being made of when male seal part 11 refers at least two oblique angle sealing elements, and female seat part 21 is When finger is made of at least two oblique angle sealing elements, the quantity of the oblique angle sealing element of male seal part 11 can be with female seat part 21 Oblique angle sealing element quantity it is identical.
Wherein, as shown in fig. 6, oblique angle sealing element refers to that the angle in tensional state between end face and cross section is default The sealing element of angle, and oblique angle sealing element can be entirety and be bent to semicircular structure, cross section is the oblique angle sealing element of rectangle. The value range of the predetermined angle is 30 degree to 60 degree, for example, the predetermined angle can be 30 degree, 45 degree or 60 degree etc., when two When the wedge angle of a oblique angle sealing element is opposite, male seal group 1 is formed, conversely, forming female seat group 2.
Further, as shown in figure 5, further including at least one straight angle sealing element 12, female seat group in male seal group 1 It further include at least one straight angle sealing element 22 in 2.
At least one straight angle sealing element 12 is Nian Jie at least one male seal part 11, at least one straight angle sealing element 22 with At least one female seat part 21 bonding.And then in straight angle sealing element, male seal part and female seat part when being used cooperatively, Intersection based on straight angle sealing element, male seal part and female seat part end face combines, effectively increase male seal group 1 with The sealing effect of 2 seam crossing of female seat group.
Wherein, straight angle sealing element is the sealing element being parallel to each other between end face and cross section.As shown in fig. 7, the straight angle seals Part can be entirety and be bent to semicircular structure, and cross section is the straight angle sealing element of rectangle.
Further, in order to avoid male seal part 11, the peaceful corner seal of female seat part 21 rectangular section rib Angle damages operator, and the corner angle of the rectangular section do chamfered.
Between at least one the male seal part 11 for including due to male seal group 1, or including at least one convex Between sealing element 11 and at least one straight angle sealing element 12 and at least one female seat part 21 that female seat group 2 includes Between, or including at least one female seat part 21 and at least one straight angle sealing element 22 between can pass through bonding Mode is fixedly connected.
However, male seal group 1 and female seat group 2 are in squeezed state after mechanical three-way is installed, into After row disassembly, the peaceful corner seal 12 of the male seal part 11 that male seal group 1 includes or concave sealing group 2 include Corner seal 12 may there is a phenomenon where stress relaxation and creep failures for 11 peace of concave sealing element.
Therefore, for male seal group 1, which can also include the steel loop 4 of two l-shaped cross sections, two L shapes The steel loop 4 of cross section is located at the two sides of male seal group 1, to be close to and wrap up male seal group 1;It is close for the spill Envelope group 2, the sealing structure further include the steel loop 4 of two l-shaped cross sections, and it is close that the steel loop 4 of two l-shaped cross sections is located at spill The two sides of envelope group 2, to be close to and wrap up female seat group 2.
As shown in figure 8, L shape steel loop 4 refers to that entirety is bent to semicircular structure, cross section is L-shaped steel loop, wherein L shape Chamfered is done by the corner of steel loop 4.
When the sealing structure is in use state, upper housing, lower case, the pipeline external surface, at least one of mechanical three-way To male seal group, at least a pair of of female seat group and at least a pair of of axial seal can be formed at least together with solid space Effectively sealing.
When use state forms at least effective sealing of twice solid space, which can also include examination Hole is pressed, in order to test by sealing effect of the pressure testing hole to the sealing structure.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (8)

1. a kind of sealing structure for mechanical three-way, which is characterized in that the sealing structure includes:
At least a pair of of male seal group, the male seal group includes at least one male seal part;
At least a pair of of female seat group, the female seat group includes at least one female seat part;And
At least a pair of of axial seal;
The male seal part is identical as the female seat number of packages amount, at least a pair of of male seal group, described at least one Female seat group and at least a pair of of axial seal are corresponded;
In use state, a pair of of male seal group and a pair of of female seat group form a pair of circumferential sealing group, a pair of axial close The both ends of sealing are connect with the outer side seal of the seam crossing of the pair of circumferential sealing group, and the pair of axial seal is axially right Claim and is parallel to each other.
2. sealing structure as described in claim 1, which is characterized in that the male seal part refers to that both ends are the sealing of tongue Part, or refer to that the both ends being made of at least two oblique angle sealing elements are the sealing element of convex, the oblique angle sealing element refers to Angle when tensional state between end face and cross section is the sealing element of predetermined angle;
The female seat part refers to that both ends are the sealing element of groove, or refers to two be made of at least two oblique angle sealing elements End is the sealing element of spill.
3. sealing structure as described in claim 1, which is characterized in that the axial seal includes that the axial direction of rectangular section is close The axial seal of sealing and semi-circular cross-section;
The both ends of the axial seal of the rectangular section are connect with the outside of one end of a pair of of male seal group, and the rectangle The axial seal in section is located at the same side of the pair of male seal group, and the two of the axial seal of the semi-circular cross-section It holds and is connect with the outside of one end of a pair of of female seat group, and the axial seal of the semi-circular cross-section is positioned at the pair of recessed The same side of shape sealing element;Alternatively,
The both ends of the axial seal of the rectangular section are connect with the outside of one end of a pair of of female seat group, and the rectangle The axial seal in section is located at the same side of the pair of female seat group, and the two of the axial seal of the semi-circular cross-section It holds and is connect with the outside of one end of a pair of of male seal group, and the axial seal of the semi-circular cross-section is positioned at the pair of convex The same side of shape sealing element.
4. sealing structure a method according to any one of claims 1-3, which is characterized in that the both ends of the axial seal are S-shaped.
5. sealing structure as described in claim 1, which is characterized in that the male seal group and the female seat group are Semi-circular shape.
6. sealing structure as described in claim 1, which is characterized in that further include at least one straight angle in the male seal group Sealing element further includes at least one straight angle sealing element in the female seat group, and the straight angle sealing element refers in tensional state When end face and cross section between the sealing element that is parallel to each other.
7. sealing structure as described in claim 1, which is characterized in that for the male seal group, the sealing structure is also Steel loop including two l-shaped cross sections, the steel loop of described two l-shaped cross sections are located at the two sides of the male seal group, To be close to and wrap up the male seal group.
8. sealing structure as claimed in claim 1 or 7, which is characterized in that for the female seat group, the sealing structure It further include the steel loop of two l-shaped cross sections, the steel loop of described two l-shaped cross sections is located at the two of the female seat group Side, to be close to and wrap up the female seat group.
CN201710458185.4A 2017-06-16 2017-06-16 A kind of sealing structure for mechanical three-way Pending CN109140111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710458185.4A CN109140111A (en) 2017-06-16 2017-06-16 A kind of sealing structure for mechanical three-way

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710458185.4A CN109140111A (en) 2017-06-16 2017-06-16 A kind of sealing structure for mechanical three-way

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Publication Number Publication Date
CN109140111A true CN109140111A (en) 2019-01-04

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2849415Y (en) * 2005-08-17 2006-12-20 康中禄 Pipeline sealing clamp
CN102121553A (en) * 2011-03-18 2011-07-13 池州恒生科技发展有限公司 High-pressure-resisting pipeline urgent repairing device
WO2015050428A1 (en) * 2013-10-01 2015-04-09 Petroliam Nasional Berhad (Petronas) Stand-off clamp for pipeline repair
CN105143735A (en) * 2012-12-07 2015-12-09 彻斯特顿公司 Split mechanical seal with axial biasing assembly
CN205026308U (en) * 2015-09-18 2016-02-10 四川德源石油天然气工程有限公司 Be applied to fixture structure of pipeline leaking stoppage
CN105423061A (en) * 2015-12-08 2016-03-23 中国石油天然气集团公司 Maintaining and first-aid repairing pipe clamp for sealing middle-high-pressure pipeline through light inner-expansion
CN105673992A (en) * 2016-04-01 2016-06-15 西南石油大学 Pipeline leakage-stopping device containing axial packing seal
CN205479958U (en) * 2016-02-29 2016-08-17 池州恒生科技发展有限公司 Tapered pipeline repairs ware
CN106439374A (en) * 2016-12-21 2017-02-22 安徽恒生科技发展集团有限公司 Pipeline repair device
CN207094060U (en) * 2017-06-16 2018-03-13 中国石油天然气集团公司 A kind of sealing structure for mechanical three-way

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2849415Y (en) * 2005-08-17 2006-12-20 康中禄 Pipeline sealing clamp
CN102121553A (en) * 2011-03-18 2011-07-13 池州恒生科技发展有限公司 High-pressure-resisting pipeline urgent repairing device
CN105143735A (en) * 2012-12-07 2015-12-09 彻斯特顿公司 Split mechanical seal with axial biasing assembly
WO2015050428A1 (en) * 2013-10-01 2015-04-09 Petroliam Nasional Berhad (Petronas) Stand-off clamp for pipeline repair
CN205026308U (en) * 2015-09-18 2016-02-10 四川德源石油天然气工程有限公司 Be applied to fixture structure of pipeline leaking stoppage
CN105423061A (en) * 2015-12-08 2016-03-23 中国石油天然气集团公司 Maintaining and first-aid repairing pipe clamp for sealing middle-high-pressure pipeline through light inner-expansion
CN205479958U (en) * 2016-02-29 2016-08-17 池州恒生科技发展有限公司 Tapered pipeline repairs ware
CN105673992A (en) * 2016-04-01 2016-06-15 西南石油大学 Pipeline leakage-stopping device containing axial packing seal
CN106439374A (en) * 2016-12-21 2017-02-22 安徽恒生科技发展集团有限公司 Pipeline repair device
CN207094060U (en) * 2017-06-16 2018-03-13 中国石油天然气集团公司 A kind of sealing structure for mechanical three-way

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