CN202926751U - Hydraulic push device - Google Patents
Hydraulic push device Download PDFInfo
- Publication number
- CN202926751U CN202926751U CN 201220650996 CN201220650996U CN202926751U CN 202926751 U CN202926751 U CN 202926751U CN 201220650996 CN201220650996 CN 201220650996 CN 201220650996 U CN201220650996 U CN 201220650996U CN 202926751 U CN202926751 U CN 202926751U
- Authority
- CN
- China
- Prior art keywords
- piston
- large piston
- cylinder sleeve
- small
- shunting
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a hydraulic push device. An upper connector is connected with the upper part of an outer cylinder; the lower part of the outer cylinder is connected with a lower connector; a split liquid transmission connector is mounted at the upper part inside the outer cylinder; the lower part of the split liquid transmission connector is connected with a cylinder sleeve; a large piston is mounted inside the cylinder sleeve; a small piston is mounted inside the lower connector; a large-piston type sealing ring is mounted between the large piston and the cylinder sleeve; a small-piston type sealing ring is mounted between the small piston and the lower connector; an inlet is arranged in the outer cylinder; a radial hole and a channel are arranged on the split liquid transmission connector; a vertical through hole is arranged in the split liquid transmission connector; a cavity is arranged at the lower part of the large piston; when hydraulic pressure is applied in a casing pipe, an annular channel is arranged between the cylinder sleeve and the outer cylinder; the upper end of the large piston and the small end of the small piston are stressed by the casing pipe; the lower end face of the large piston is stressed by pressure inside an oil pipe; and the pressure of the casing pipe is higher than the pressure of the oil pipe, so as to generate a force of pushing the pistons downward and supplying a thrust to underground equipment for working. Therefore, the hydraulic push device provided by the utility model can be used for supplying a downward thrust by applying the hydraulic pressure in the casing pipe outside the oil pipe.
Description
Technical field
The utility model belongs to oil field well well workover, oil production equipment, is hydraulic pushing device.
Background technique
Some underground equipments need to be suppressed on the hydraulic pressure installation and produce downward thrust and could work, suppressing at present the device that produces downward thrust is all to suppress to produce downward thrust in oil pipe, when on tubing string during with blowout hookup, suppress in the oil pipe and just can not transfer the pressure on hydraulic pressure installation, underground equipment can't be worked.
Summary of the invention
The purpose of this utility model is to provide a kind of hydraulic pushing device, can suppress the downward thrust of generation in the sleeve pipe of oil pipe outside.
the purpose of this utility model is achieved in that and comprises upper connection, the shunting passes the liquid joint, large piston packing, large piston, small piston, cylinder sleeve, urceolus, the small piston seal ring, lower contact, upper connection is connected with urceolus top, the urceolus bottom is connected with lower contact, the shunting passes the liquid jiont treatment at the urceolus internal upper part, biography liquid joint bottom, shunting is connected with cylinder sleeve, large piston is arranged in cylinder sleeve, large piston is in the shunting and passes under the liquid joint, large piston outer wall coordinates with inboard wall of cylinder liner, small piston is arranged in lower contact, the small piston outer wall coordinates with the lower contact inwall, between large piston and cylinder sleeve, large piston packing is installed, be used for sealing the gap between large piston and cylinder sleeve, the small piston seal ring is installed between small piston and lower contact, be used for the gap between sealing small piston and lower contact, be with hole on urceolus, pass on the liquid joint in the shunting and be provided with radial hole, pass on the liquid joint in the shunting and be provided with passage, pass on the liquid joint in the shunting and be provided with vertical linked hole, cavity is arranged at large piston bottom, between cylinder sleeve and urceolus, annulus access is arranged, inlet hole, radial hole, passage communicates, and passage communicates with large piston upper-end surface, and upper connection is hollow structure, upper connection, vertical linked hole, annulus access, cavity communicates, large piston, small piston forms one.
The beneficial effects of the utility model are: when suppressing in the sleeve pipe, casing pressure is born in large piston upper end, small piston lower end, large piston lower surface bears the oil pipe internal pressure, the area that namely bears casing pressure equals to bear the area of tubing pressure, and the large piston of casing pressure promotion is downward, tubing pressure promotes large piston upwards, and casing pressure is higher than tubing pressure, so, can produce the downward power of pushing piston, make its work for underground equipment thrust, therefore, the utility model can be suppressed the downward thrust of generation in the sleeve pipe of oil pipe outside.
Description of drawings
Accompanying drawing is the utility model embodiment's assembling whole-cutaway view.
Embodiment
Following elder generation describes embodiment of the present utility model by reference to the accompanying drawings.
as seen from the figure, embodiment of the present utility model comprises upper connection 1, the shunting passes liquid joint 2, large piston packing 3, large piston 4, small piston 5, cylinder sleeve 6, urceolus 7, small piston seal ring 8, lower contact 9, upper connection 1 is connected with urceolus 7 tops, urceolus 7 bottoms are connected with lower contact 9, the shunting passes liquid joint 2 and is arranged on urceolus 7 internal upper parts, biography liquid joint 2 bottoms, shunting are connected with cylinder sleeve 6, large piston 4 is arranged in cylinder sleeve 6, large piston 4 is in the shunting and passes under liquid joint 2, large piston 4 outer walls coordinate with cylinder sleeve 6 inwalls, small piston 5 is arranged in lower contact 9, small piston 5 outer walls coordinate with lower contact 9 inwalls, between large piston 4 and cylinder sleeve 6, large piston packing 3 is installed, be used for sealing the gap between large piston 4 and cylinder sleeve 6, small piston seal ring 8 is installed between small piston 5 and lower contact 9, be used for the gap between sealing small piston 5 and lower contact 9, be with hole 10 on urceolus 7, pass on liquid joint 2 in the shunting and be provided with radial hole 11, pass on liquid joint 2 in the shunting and be provided with passage 13, pass on liquid joint 2 in the shunting and be provided with vertical linked hole 12, cavity 14 is arranged at large piston 4 bottoms, between cylinder sleeve 6 and urceolus 7, annulus access 15 is arranged, inlet hole 10, radial hole 11, passage 13 communicates, and passage 13 communicates with large piston 4 upper-end surfaces, and upper connection 1 is hollow structure, upper connection 1, vertical linked hole 12, annulus access 15, cavity 14 communicates, large piston 4, small piston 5 forms one.
When going into the well, the utility model is connected on underground equipment, upper connection 1 top is connected with tubing string.Beat hydraulic pressure in sleeve pipe, hydraulic pressure reaches large piston 4 upper-end surfaces from inlet hole 10, radial hole 11, passage 13, because, casing pressure is born in large piston 4 upper-end surfaces, small piston 5 lower end surfaces, and tubing pressure is born in large piston 4 lower end surfaces, because of casing pressure higher than tubing pressure, this pressure difference promotes large piston 4, small piston 5 is descending, makes underground equipment work, realizes the purpose of this utility model.
Claims (1)
1. hydraulic pushing device, comprise upper connection (1), the shunting passes liquid joint (2), large piston packing (3), large piston (4), small piston (5), cylinder sleeve (6), urceolus (7), small piston seal ring (8), lower contact (9), it is characterized in that: upper connection (1) is connected with urceolus (7) top, urceolus (7) bottom is connected with lower contact (9), the shunting passes liquid joint (2) and is arranged on urceolus (7) internal upper part, biography liquid joint (2) bottom, shunting is connected with cylinder sleeve (6), large piston (4) is arranged in cylinder sleeve (6), large piston (4) is in the shunting and passes under liquid joint (2), large piston (4) outer wall coordinates with cylinder sleeve (6) inwall, small piston (5) is arranged in lower contact (9), small piston (5) outer wall coordinates with lower contact (9) inwall, between large piston (4) and cylinder sleeve (6), large piston packing (3) is installed, be used for sealing the gap between large piston (4) and cylinder sleeve (6), small piston seal ring (8) is installed between small piston (5) and lower contact (9), be used for the gap between sealing small piston (5) and lower contact (9), be with hole on urceolus (7) (10), pass on liquid joint (2) in the shunting and be provided with radial hole (11), pass on liquid joint (2) in the shunting and be provided with passage (13), pass on liquid joint (2) in the shunting and be provided with vertical linked hole (12), cavity (14) is arranged at large piston (4) bottom, between cylinder sleeve (6) and urceolus (7), annulus access (15) is arranged, inlet hole (10), radial hole (11), passage (13) communicates, passage (13) communicates with large piston (4) upper-end surface, upper connection (1) is hollow structure, upper connection (1), vertical linked hole (12), annulus access (15), cavity (14) communicates, large piston (4), small piston (5) forms one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220650996 CN202926751U (en) | 2012-11-21 | 2012-11-21 | Hydraulic push device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220650996 CN202926751U (en) | 2012-11-21 | 2012-11-21 | Hydraulic push device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926751U true CN202926751U (en) | 2013-05-08 |
Family
ID=48216715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220650996 Expired - Fee Related CN202926751U (en) | 2012-11-21 | 2012-11-21 | Hydraulic push device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926751U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594142A (en) * | 2015-01-26 | 2015-05-06 | 安徽兴宇轨道装备有限公司 | Ejection and pushing device for detachment of whole ballast bed |
-
2012
- 2012-11-21 CN CN 201220650996 patent/CN202926751U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594142A (en) * | 2015-01-26 | 2015-05-06 | 安徽兴宇轨道装备有限公司 | Ejection and pushing device for detachment of whole ballast bed |
| CN104594142B (en) * | 2015-01-26 | 2016-09-07 | 安徽兴宇轨道装备有限公司 | A kind of thrustor for dismantling solid concrete roabed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130508 Termination date: 20131121 |