CN203847042U - Safe and reliable parallel bar protective device - Google Patents
Safe and reliable parallel bar protective device Download PDFInfo
- Publication number
- CN203847042U CN203847042U CN201420271781.3U CN201420271781U CN203847042U CN 203847042 U CN203847042 U CN 203847042U CN 201420271781 U CN201420271781 U CN 201420271781U CN 203847042 U CN203847042 U CN 203847042U
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- China
- Prior art keywords
- piston
- piston rod
- safe
- flange
- connector
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- Expired - Fee Related
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Abstract
The utility model discloses a safe and reliable parallel bar protective device. The device comprises two cylinders with the same size, a connection piece, a lower piston, a piston rod, telescoping rods, a flange disc, an upper piston, and a spacing piece. The two ends of the piston rod are respectively connected to the lower piston and the upper piston, and pass through the flange disc. The lower piston vertically passes through the connection piece. The upper piston is vertically fixed to the flange disc. The two cylinders are vertically fixed to the connection piece. Two telescoping rods are vertically connected between the connection piece and the flange disc, and symmetrical relative to the piston rod. The spacing piece sleeves the lower piston, and is disposed between the upper piston and the connection piece. The two sides of the spacing piece are respectively provided with clamp grooves used for clamping the corresponding telescoping rods. By using the above principle, the device utilizes the common effects of the telescoping rods and the spacing element to limit the piston rod to move within a certain scope, ensures pulling force balance, and prevents a bias pulling force or an overlarge pulling force from damaging the piston rod and the pistons. The device is simple in operation, safe and reliable, and improved in service lifetime.
Description
Technical field
The utility model relates to steps on oilfield applications, is specifically related to safe and reliable parallel bars protective device.
Background technology
Wellhead assembly before using needs well head to carry out pressure testing operation, can under high pressure carry out safety operation with the device that ensures production wellhead.This kind of pressure testing operation need to be carried out more preliminary preparation early stage conventionally, while preparing pressure testing material and facility, needs to check whether the material and facility of preparing damages; Check whether pressure meter damages, and whether pointer makes zero, and whether manometric range is suitable; Whether the gap size of control flange junction is consistent, and whether bolt tightens, and whether steel ring enters groove; Check whether each road pipeline connects appropriate, whether pressure testing channel valve switch is correct; Checking whether each road pipeline has breaks, leaks; Check whether relief hole closes.All more complicated of existing tree-protector structure; need professional operating personnel just can operate; and special push-pull mechanism and position-limit mechanism are not set on piston rod; piston rod in use easily departs from set direction with piston disengaging or movement locus, brings potential safety hazard and has shortened application life.
Utility model content
The utility model has overcome the deficiencies in the prior art; safe and reliable parallel bars protective device is provided; utilize the acting in conjunction of the parts such as expansion link and locating part that piston rod is limited in certain scope and is moved; ensure tension equalizer; avoid drawing partially or overexert and damage piston rod and piston; simple to operate, safe and reliable, improve application life.
For solving above-mentioned technical problem, the utility model is by the following technical solutions: safe and reliable parallel bars protective device, comprise two cylinder barrel, connector, lower piston, piston rod, expansion link, flange, upper piston and locating parts that grade is large, described piston rod two ends connect respectively lower piston and upper piston and pass flange, lower piston is vertically through connector, and upper piston is vertically fixed on flange; Two described large cylinder barrels such as grade are vertically fixed on connector, two expansion links of vertical connection between connector and flange, and two expansion links are about piston rod symmetry; Described locating part is socketed on lower piston and between upper piston and connector, draw-in groove is set respectively for expansion link corresponding to clamping on the both sides of locating part.The top card of piston rod is connected in flange, ensures can only on same straight line, move between piston rod and lower piston and upper piston, avoids drawing inclined to one side damage piston.Both sides at piston rod also arrange expansion link, and are connected in the draw-in groove on locating part below expansion link, further add and force piston rod to avoid being offset.
Described expansion link can move forward and backward in the draw-in groove of connector.
One end portion of the cylinder barrel that two described grades are large seals with a hemispherical plug respectively.Good sealing effect, firm, occur wearing and tearing and also can change it, easy to use.
Described locating part next-door neighbour connector.
Described upper piston is close to flange and is positioned at flange one side.
The large cylinder barrel of two described grades is about piston rod symmetry.The design of twin-tub cylinder has ensured the abundant supply of energy, drives piston to move.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model adopts said structure, and piston rod and piston are limited in certain scope and are moved, and ensures tension equalizer, avoids drawing partially or overexerts and damage piston rod and piston, simple to operate, safe and reliable, has improved application life.
2, coordinate to come the motion between operated piston bar, upper piston and lower piston by expansion link and flange, be more conducive to protect piston rod.
3, the design of twin-tub cylinder has ensured the abundant supply of energy, drives piston to move.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure, Reference numeral is expressed as: 1, cylinder barrel; 2, connector; 3, lower piston; 4, piston rod; 5, expansion link; 6, flange; 7, upper piston; 8, hemispherical plug; 9, locating part.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further elaborated, embodiment of the present utility model is not limited to this.
Embodiment 1:
As shown in Figure 1, the utility model comprises two cylinder barrel 1, connector 2, lower piston 3, piston rod 4, expansion link 5, flange 6, upper piston 7 and locating parts 9 that grade is large, described piston rod 4 two ends connect respectively lower piston 3 and upper piston 7 and pass flange 6, lower piston 3 is vertical through connector 2, and upper piston 7 is vertically fixed on flange 6; Described large cylinder barrel 1 such as two grades is vertically fixed on connector 2, and between connector 2 and flange 6, vertical 5, two expansion links 5 of two expansion links that connect are about piston rod 5 symmetries; Described locating part 9 is socketed on lower piston 3 and between upper piston 7 and connector 2, draw-in groove is set respectively for expansion link 5 corresponding to clamping on the both sides of locating part 9.
This device is lifted on little four-way; this device and production tree are strained and fixed with steel cable; utilize the acting in conjunction of the parts such as expansion link and locating part that piston rod is limited in certain scope and is moved; ensure tension equalizer; avoid drawing partially or overexert and damage protector and production tree; pulling force is more balanced steadily, must not draw partially or overexert and damage protector and production tree.Then, lift valve is opened, positive well-flushing, makes by expansion link and flange that piston rod is descending to be set.Open production gate, envelope is tested in pressurization, and test pressure should reach the maximum pressure of FRACTURING DESIGN.If leak, answer termination of pumping, protector piston rod to be mentioned, closing well, then pulls down protector, after replacing piston rod seal component, reinstalls protector pressure testing again.Utilize the acting in conjunction of the parts such as expansion link and locating part that piston rod is limited in certain scope and is moved, ensure tension equalizer, avoid drawing partially or overexert and damage piston rod and piston, simple to operate, safe and reliable, improve application life.
Embodiment 2:
Preferably concrete structure is as follows on the basis of embodiment 1 for the present embodiment: expansion link 5 can move forward and backward in the draw-in groove of connector 2.One end portion of the cylinder barrel 1 that two grades are large seals with a hemispherical plug 8 respectively.Good sealing effect, firm, occur wearing and tearing and also can change it, easy to use.
Locating part 9 is close to connector 2.Upper piston 7 is close to flange 6 and is positioned at flange 6 one sides.The large cylinder barrel 1 of two grades is about piston rod 4 symmetries.The design of twin-tub cylinder has ensured the abundant supply of energy, drives piston to move.
Just can realize as mentioned above this utility model.
Claims (6)
1. safe and reliable parallel bars protective device, it is characterized in that: comprise two cylinder barrel (1), connector (2), lower piston (3), piston rod (4), expansion link (5), flange (6), upper piston (7) and locating parts (9) that grade is large, described piston rod (4) two ends connect respectively lower piston (3) and upper piston (7) and pass flange (6), lower piston (3) is vertically through connector (2), and upper piston (7) is vertically fixed on flange (6); It is upper that the cylinder barrel (1) that two described grades are large is vertically fixed on connector (2), vertical two expansion links (5) that connect between connector (2) and flange (6), and two expansion links (5) are about piston rod (5) symmetry; Described locating part (9) is socketed in lower piston (3) above and is positioned between upper piston (7) and connector (2), draw-in groove is set respectively for expansion link corresponding to clamping (5) on the both sides of locating part (9).
2. safe and reliable parallel bars protective device according to claim 1, is characterized in that: described expansion link (5) can move forward and backward in the draw-in groove of connector (2).
3. safe and reliable parallel bars protective device according to claim 1, is characterized in that: one end portion of the cylinder barrel (1) that two described grades are large uses respectively a hemispherical plug (8) to seal.
4. safe and reliable parallel bars protective device according to claim 1, is characterized in that: described locating part (9) next-door neighbour's connector (2).
5. safe and reliable parallel bars protective device according to claim 1, is characterized in that: described upper piston (7) is close to flange (6) and is positioned at flange (6) one sides.
6. safe and reliable parallel bars protective device according to claim 1, is characterized in that: the large cylinder barrel (1) of two described grades is about piston rod (4) symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271781.3U CN203847042U (en) | 2014-05-27 | 2014-05-27 | Safe and reliable parallel bar protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271781.3U CN203847042U (en) | 2014-05-27 | 2014-05-27 | Safe and reliable parallel bar protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847042U true CN203847042U (en) | 2014-09-24 |
Family
ID=51560076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420271781.3U Expired - Fee Related CN203847042U (en) | 2014-05-27 | 2014-05-27 | Safe and reliable parallel bar protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847042U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018800A (en) * | 2014-05-27 | 2014-09-03 | 成都来宝石油设备有限公司 | Reliable and safe type dual-bar protector |
-
2014
- 2014-05-27 CN CN201420271781.3U patent/CN203847042U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018800A (en) * | 2014-05-27 | 2014-09-03 | 成都来宝石油设备有限公司 | Reliable and safe type dual-bar protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20150527 |
|
| EXPY | Termination of patent right or utility model |