CN117072101A - Polish rod dynamic and static integrated sealing valve body and method for quickly replacing packing - Google Patents
Polish rod dynamic and static integrated sealing valve body and method for quickly replacing packing Download PDFInfo
- Publication number
- CN117072101A CN117072101A CN202311331307.5A CN202311331307A CN117072101A CN 117072101 A CN117072101 A CN 117072101A CN 202311331307 A CN202311331307 A CN 202311331307A CN 117072101 A CN117072101 A CN 117072101A
- Authority
- CN
- China
- Prior art keywords
- packing
- valve body
- sealing
- seal
- static
- 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
Links
- 238000012856 packing Methods 0.000 title claims abstract description 71
- 238000007789 sealing Methods 0.000 title claims abstract description 52
- 230000003068 static effect Effects 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000003825 pressing Methods 0.000 claims description 20
- 210000004907 gland Anatomy 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 2
- 238000010009 beating Methods 0.000 claims 1
- 238000004891 communication Methods 0.000 claims 1
- 238000005086 pumping Methods 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 description 3
- 208000001034 Frostbite Diseases 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention relates to the technical field of packing replacement of a polished rod of an oil pumping unit, in particular to a polished rod dynamic and static integrated sealing valve body and a packing quick replacement method. The invention has reasonable and compact structure and convenient use, can seal the lower part of the optical rod by arranging the static seal assembly, is connected with the pressurizing equipment by arranging the pressure release valve to press the lower side of the packing, and pushes the packing upwards in an air pressure or hydraulic mode, thereby being simple, convenient, more labor-saving and higher in efficiency and effectively reducing the labor intensity of operators.
Description
Technical Field
The invention relates to the technical field of packing replacement of a polished rod of an oil pumping unit, in particular to a polished rod dynamic and static integrated sealing valve body and a packing rapid replacement method.
Background
The oil field has high well number proportion in the thick oil production, and the sealing replacement of the packing of the oil extraction well is always difficult due to the thick oil (high viscosity), high temperature and unstable pressure, so the labor intensity is high and the time is long. In the field management process, the work related to sealing reaches more than 40% of the total work load of the oil extraction operation area. At present, in the oil extraction process of the oil pumping unit, packing in a polish rod sealing disc needs to be replaced regularly, especially in some high-pressure, high-temperature or high-water-content wells, the service life of the packing is short, the packing replacement is frequent, and the packing needs to be replaced once per month on average. The main method for replacing the packing at present is to firstly decompress the wellhead, draw out the packing in the packing box one by using a common screwdriver, a hook and other replacing tools when the pressure is not available, then fill in new packing, the operation space is narrow, the packing replacement needs more than 40 minutes, and even needs more than 2 hours in a low-temperature environment in winter. The labor intensity of operators is high, the operators are easy to slip and hurt hands, the operators are easy to frostbite in winter, safety risks exist, and the working efficiency is low.
Disclosure of Invention
The invention provides a polish rod dynamic and static integrated sealing valve body and a quick packing replacement method, which overcome the defects of the prior art, and can effectively solve the problems of time and labor waste, lower construction efficiency and potential safety hazard existing in the prior art that a worker adopts tools such as a screwdriver to replace packing.
One of the technical schemes of the invention is realized by the following measures: the utility model provides a polished rod moves, quiet integration seal valve body, including polished rod, quiet seal valve body, left portion quiet seal assembly, right side quiet seal assembly and move seal assembly, the cover is equipped with and is cross quiet seal valve body in the middle part outside the polished rod, quiet seal valve body left and right sides is equipped with left portion quiet seal assembly and right portion quiet seal assembly in the middle part outside of shutoff polished rod respectively, move seal assembly includes packing and packing box gland, the inboard packing that is equipped with the cover in the polished rod outside in quiet seal valve body upper portion, packing upper end is equipped with can compress tightly the packing and with quiet seal valve body upper end outside threaded connection's packing box gland, be equipped with inside and outside breach that link up on the quiet seal valve body of correspondence packing downside position, be equipped with the relief valve in the breach.
The following are further optimizations and/or improvements to the above-described inventive solution:
the right static seal assembly can comprise a seal valve block and a seal shaft assembly, the right end of the seal valve block is connected with the left end of the seal shaft assembly, the seal valve block can tightly hold the polished rod to seal the polished rod, the outside of the seal shaft assembly is connected with a valve body end cover through threads, the valve body end cover and the static seal valve body are fixedly arranged together through bolts, and the left static seal assembly and the right static seal assembly are identical in structure and distributed in bilateral symmetry.
Preferably, the pressure release valve is a spring-loaded check valve.
As another preferable, the pressure release valve is a needle valve.
The second technical scheme of the invention is realized by the following measures: a method for quickly replacing packing includes such steps as rotating sealing axle assembly to push sealing valve block to move inward for holding polish rod, sealing the polish rod, opening pressure valve, opening packing box, connecting pressing pipeline to pressure releasing valve, and pressing packing.
The following are further optimizations and/or improvements to the above-described inventive solution:
preferably, the pressurizing device is a hand-held pneumatic pump.
As another preferred option, the pressurizing device is a hand-held hydraulic pump.
The invention has reasonable and compact structure and convenient use, can seal the lower part of the optical rod by arranging the static seal assembly, is connected with the pressurizing equipment by arranging the pressure release valve to press the lower side of the packing, and pushes the packing upwards in an air pressure or hydraulic mode, thereby being simple, convenient, more labor-saving and higher in efficiency and effectively reducing the labor intensity of operators.
Drawings
Fig. 1 is a schematic diagram of a front cross-sectional structure of an embodiment of the present invention.
The codes in the drawings are respectively: 1 is a polish rod, 2 is a static seal valve body, 3 is a packing, 4 is a packing box gland, 5 is a pressure release valve, 6 is a seal valve block, 7 is a seal shaft assembly, 8 is a valve body end cover, 9 is a pressurizing pipeline, and 10 is pressurizing equipment.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of the front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention is further described below with reference to examples and figures:
example 1: as shown in the attached drawing 1, the polish rod dynamic and static integrated sealing valve body comprises a polish rod 1, a static sealing valve body 2, a left static sealing assembly, a right static sealing assembly and a dynamic sealing assembly, wherein the cross-shaped static sealing valve body 2 is sleeved outside the middle of the polish rod 1, the left static sealing assembly and the right static sealing assembly which can seal the outer side of the middle of the polish rod 1 are respectively arranged on the left side and the right side of the static sealing valve body 2, the dynamic sealing assembly comprises a packing 3 and a packing gland 4, the packing 3 sleeved outside the polish rod 1 is arranged on the inner side of the upper part of the static sealing valve body 2, the packing gland 4 which can compress the packing 3 and is in threaded connection with the outer side of the upper end of the static sealing valve body 2 is arranged at the upper end of the packing 3, a notch which is internally and externally communicated is arranged on the static sealing valve body 2 at the lower side of the corresponding packing 3, and a pressure release valve 5 is arranged in the notch.
When the packing box is used, the left static seal assembly and the right static seal assembly are firstly used for sealing the polished rod 1, then the pressing valve 5 is opened to observe whether the sealing is tight or not, then the packing box gland 4 is opened, the pressing device 10 is connected to the pressing valve 5 through the pressing pipeline 9, the packing 3 is pushed to move upwards by the gas or liquid pressed by the pressing device 10 from the lower part, the packing is separated from the static seal valve body 2, and a new packing 3 is installed. If the relief valve 5 is a check valve, it is necessary to open the check valve by a tool such as a screwdriver and then observe whether gas or liquid is leaked. Compared with the mode that the pressing equipment 10 is adopted to take out the packing 3 one by adopting the replacing tools such as a screwdriver, a hook and the like, the invention takes forty minutes to draw out the packing 3 in the packing 3 box one by one, and the packing 3 can be taken down and replaced only in eight minutes, thereby greatly improving the working efficiency of operators, reducing the labor intensity and reducing the frostbite risk of the operators when the packing 3 is replaced in winter.
The polish rod dynamic and static integrated sealing valve body can be further optimized or/and improved according to actual needs:
as shown in figure 1, the right part static seal assembly comprises a seal valve block 6 and a seal shaft assembly 7, the right end of the seal valve block 6 is connected with the left end of the seal shaft assembly 7, the seal valve block 6 can tightly hold the polished rod 1 to seal the polished rod 1, the outside of the seal shaft assembly 7 is connected with a valve body end cover 8 through threads, the valve body end cover 8 and the static seal valve body 2 are fixedly arranged together through bolts, and the left part static seal assembly and the right part static seal assembly are identical in structure and are distributed in bilateral symmetry.
The sealing valve block 6 is pushed by the rotary sealing shaft assembly 7 to hug the polish rod 1 tightly to seal the polish rod 1, the gap below the pressure release valve 5 is blocked, and when the polish rod 1 does not need to be sealed, the sealing shaft assembly 7 is rotated reversely to enable the sealing valve block 6 to be pulled to move outwards to loosen the polish rod 1.
As shown in fig. 1, the pressure release valve 5 is a spring-loaded check valve. Before the pressure is applied, the spring type check valve is connected with the pressure application pipeline 9 through a quick connector, so that the spring type check valve has the advantage of quick connection, but the risk of corrosion damage of an internal spring or a valve core and the like is increased after the service time is prolonged.
As shown in fig. 1, the pressure release valve 5 is a needle valve. The needle valve is simple in structure and reliable in sealing, but when the spring type check valve is used, bolts on the needle valve are required to be detached firstly, and then the pressing pipeline 9 is connected through the connector, so that the spring type check valve is long in operation time.
Example 2: as shown in fig. 1, the quick packing replacement method is performed according to the following method, firstly, a sealing shaft assembly 7 is rotated to push a sealing valve block 6 to move inwards to hold a polished rod 1 tightly, sealing is formed on the polished rod 1, then a pressing valve 5 is opened, if no gas-liquid leakage indicates that the lower part of the polished rod 1 is tightly sealed, then a packing box gland 4 is opened, a pressing pipeline 9 is connected to a pressure release valve 5, the pressing pipeline 9 is connected with a pressing device 10, and after connection is completed, the pressing device 10 is adopted to press the lower side of a packing 3, so that the packing 3 is pushed out for the last time.
The quick-change packing method can be further optimized or/and improved according to actual needs:
as shown in fig. 1, the pressurizing device 10 is a hand-held pneumatic pump. The packing 3 is pushed by means of compressed gas.
As shown in fig. 1, the pressurizing apparatus 10 is a hand-held hydraulic pump. The packing 3 is pushed hydraulically.
The technical characteristics form the embodiment of the invention, have stronger adaptability and implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (7)
1. The utility model provides a polished rod moves, quiet integration seal valve body, a serial communication port includes the polished rod, the quiet seal valve body, left side quiet seal assembly, right side quiet seal assembly and dynamic seal assembly, the cover is equipped with the quiet seal valve body that is the cross in the middle part outside of polished rod, quiet seal valve body left and right sides is equipped with the quiet seal assembly of left portion and right side quiet seal assembly that can shutoff polished rod middle part outside respectively, dynamic seal assembly includes packing and packing box gland, the inboard packing that is equipped with the cover in the polished rod outside in quiet seal valve body upper portion, the packing upper end is equipped with the packing box gland that can compress tightly the packing and with quiet seal valve body upper end outside threaded connection, be equipped with inside and outside breach that link up on the quiet seal valve body of corresponding packing downside position, be equipped with the pressure release valve in the breach, connect the pressure pipe line on the pressure release valve, pressure pipe connects the equipment of beating.
2. The polish rod dynamic and static integrated sealing valve body according to claim 1, wherein the right static sealing assembly comprises a sealing valve block and a sealing shaft assembly, the right end of the sealing valve block is connected with the left end of the sealing shaft assembly, the sealing valve block can tightly hold the polish rod to seal the polish rod, the outside of the sealing shaft assembly is connected with a valve body end cover through threads, the valve body end cover and the static sealing valve body are fixedly installed together through bolts, and the left static sealing assembly and the right static sealing assembly are identical in structure and are distributed in bilateral symmetry.
3. The polish rod dynamic and static integrated sealing valve body according to claim 1 or 2, characterized in that the pressure release valve is a spring type check valve.
4. The polish rod dynamic and static integrated sealing valve body according to claim 1 or 2, wherein the pressure release valve is a needle valve.
5. A method for quickly replacing packing of a polish rod dynamic and static integrated sealing valve body according to any one of claims 2 to 4, which is characterized in that the method comprises the steps of firstly rotating a sealing shaft assembly to push a sealing valve block to inwards move to hold a polish rod tightly, sealing the polish rod, then opening a pressing valve, opening a packing box gland if no gas-liquid leakage indicates that the lower part of the polish rod is tightly sealed, connecting a pressing pipeline on a pressure release valve, connecting a pressing device with the pressing pipeline, and pressing the packing towards the lower side of the packing by adopting the pressing device after connection is completed, so that the packing is pushed upwards once.
6. The method of claim 5, wherein the pressurizing device is a hand-held pneumatic pump.
7. The method of quickly changing packing according to claim 5, wherein the pressurizing device is a hand-held hydraulic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311331307.5A CN117072101A (en) | 2023-10-16 | 2023-10-16 | Polish rod dynamic and static integrated sealing valve body and method for quickly replacing packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311331307.5A CN117072101A (en) | 2023-10-16 | 2023-10-16 | Polish rod dynamic and static integrated sealing valve body and method for quickly replacing packing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117072101A true CN117072101A (en) | 2023-11-17 |
Family
ID=88706440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311331307.5A Pending CN117072101A (en) | 2023-10-16 | 2023-10-16 | Polish rod dynamic and static integrated sealing valve body and method for quickly replacing packing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117072101A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4230299A (en) * | 1978-07-03 | 1980-10-28 | Petroleum Designers, Inc. | Pressure balanced gate valve having selective actuator systems |
| US4289294A (en) * | 1980-01-14 | 1981-09-15 | Double-E, Inc. | Wellhead flow control devices |
| CN108843268A (en) * | 2018-09-17 | 2018-11-20 | 克拉玛依胜利高原机械有限公司 | Replaceable polished rod packing kit for thermal recovery |
| CN210289697U (en) * | 2019-07-18 | 2020-04-10 | 李钟济 | Novel well head polished rod sealing device |
| CN111305786A (en) * | 2020-04-17 | 2020-06-19 | 濮阳市大通机泵有限公司 | Automatic tight packing polished rod sealer |
| CN212716522U (en) * | 2020-08-10 | 2021-03-16 | 宝鸡汇特石油设备有限公司 | Packing box |
-
2023
- 2023-10-16 CN CN202311331307.5A patent/CN117072101A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4230299A (en) * | 1978-07-03 | 1980-10-28 | Petroleum Designers, Inc. | Pressure balanced gate valve having selective actuator systems |
| US4289294A (en) * | 1980-01-14 | 1981-09-15 | Double-E, Inc. | Wellhead flow control devices |
| CN108843268A (en) * | 2018-09-17 | 2018-11-20 | 克拉玛依胜利高原机械有限公司 | Replaceable polished rod packing kit for thermal recovery |
| CN210289697U (en) * | 2019-07-18 | 2020-04-10 | 李钟济 | Novel well head polished rod sealing device |
| CN111305786A (en) * | 2020-04-17 | 2020-06-19 | 濮阳市大通机泵有限公司 | Automatic tight packing polished rod sealer |
| CN212716522U (en) * | 2020-08-10 | 2021-03-16 | 宝鸡汇特石油设备有限公司 | Packing box |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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