CN217234527U - Bidirectional balanced pressure anti-overflow valve for downhole operation - Google Patents
Bidirectional balanced pressure anti-overflow valve for downhole operation Download PDFInfo
- Publication number
- CN217234527U CN217234527U CN202221287651.XU CN202221287651U CN217234527U CN 217234527 U CN217234527 U CN 217234527U CN 202221287651 U CN202221287651 U CN 202221287651U CN 217234527 U CN217234527 U CN 217234527U
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- Prior art keywords
- valve
- guide rod
- pressure valve
- groove
- hollow cylinder
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- Expired - Fee Related
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 4
- 239000007788 liquid Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a bidirectional balanced pressure anti-overflow valve for downhole operation, which comprises a lower joint and a female joint, wherein the lower joint and the female joint are mutually connected; a support frame is arranged in the lower joint and consists of a hollow cylinder and a support block, and a step is arranged between the hollow cylinder and the support block; still including positive pressure valve, positive pressure valve one end is connected with the guide bar, inside the cavity cylinder was passed to guide bar one end, the cover has main spring on the guide bar, main spring one end is located positive pressure valve side recess, and the main spring other end is located the ladder between cavity cylinder and the supporting shoe. The utility model discloses a technological effect and advantage: 1. the liquid in the pipeline can be throttled, the front pressure and the rear pressure of the tool are balanced, only the liquid is cut off, the pressure is not reserved, and the tool is safe and reliable. 2. In the use, the inside card pearl connected mode that adopts of instrument can not cause rotatory back-off. 3. The sealing effect is good, the service life is long, and the sealing ring does not need to be replaced.
Description
Technical Field
The utility model belongs to the technical field of borehole operation technique and specifically relates to a borehole operation is with two-way balanced pressure anti-overflow valve that says so.
Background
At present, in the well repairing construction process, sewage in a pipeline cannot be recycled, is randomly sprinkled to pollute the environment and is difficult to clean. Therefore, a tool capable of throttling liquid in a pipeline is needed, the purpose can be achieved through the check valve, however, if pressure exists in a well in the construction process, the pressure condition cannot be observed on the ground due to the use of the check valve, the pressure at the front section of the check valve cannot be judged, and high-pressure injury accidents are easily caused due to blind operation of personnel.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned defect of prior art, the utility model provides a borehole operation is with two-way balanced pressure anti-overflow valve.
In order to achieve the above object, the utility model provides a following technical scheme:
a bidirectional balanced pressure anti-overflow valve for downhole operation comprises a lower joint and a female joint, wherein the lower joint and the female joint are connected with each other;
a support frame is arranged in the lower joint and consists of a hollow cylinder and a support block, and a step is arranged between the hollow cylinder and the support block;
the hydraulic pressure regulating device is characterized by further comprising a positive pressure valve, wherein one end of the positive pressure valve is connected with a guide rod, one end of the guide rod penetrates through the inside of the hollow cylinder, a main spring is sleeved on the guide rod, one end of the main spring is located in a groove in the side face of the positive pressure valve, and the other end of the main spring is located in a ladder between the hollow cylinder and the supporting block;
a groove with an inclined side surface is formed in the other side of the positive pressure valve, a plurality of through holes are formed in the bottom surface of the groove, a matched circular truncated cone-shaped negative pressure valve is placed in the groove, one end of the negative pressure valve is connected with a guide rod, and one end of the guide rod sequentially penetrates through the positive pressure valve and the guide rod and extends out of the hollow cylinder; the part of the guide rod extending out of the hollow cylinder is sleeved with a negative pressure spring; one end of the negative pressure spring is limited by a nut, and the other end of the negative pressure spring is contacted with the end face of the guide rod;
the inner wall of the female joint is provided with an inclined plane matched with the outer surface of the positive pressure valve.
A sealing groove is formed in the outer surface of one end of the female joint, and a sealing ring is installed in the sealing groove.
The outer surface of one end part of the female joint is provided with a ball clamping groove, the side surface of the lower joint is provided with a threaded hole, a screw plug is installed in the threaded hole, and a clamping ball is arranged between the screw plug and the ball groove.
And the outer end face of the lower joint is provided with external threads.
The utility model discloses a technological effect and advantage:
1. the liquid in the pipeline can be throttled, the front pressure and the rear pressure of the tool are balanced, only the liquid is cut off, no pressure is reserved, and the device is safe and reliable.
2. In the use, the inside card pearl connected mode that adopts of instrument can not cause rotatory back-off.
3. The sealing effect is good, the service life is long, and the sealing ring does not need to be replaced.
Drawings
Fig. 1 is a schematic overall structure diagram of the present invention;
FIG. 2 is an overall sectional view;
FIG. 3 is a schematic view of the structure with the lower and female connectors removed;
FIG. 4 is a schematic view of the structure of the negative pressure valve;
FIGS. 5 and 6 are schematic views of a positive pressure valve and a guide rod;
FIG. 7 is a schematic view of a cutoff equilibrium state;
FIG. 8 is a schematic view of a forward cycle state;
fig. 9 is a schematic diagram of an inverted equilibrium state.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below clearly and completely, and it should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
A bidirectional balance pressure anti-overflow valve for downhole operation comprises a lower joint 1 and a female joint 2, wherein the lower joint 1 and the female joint 2 are connected with each other;
a support frame 3 is arranged in the lower joint 1, the support frame 3 consists of a hollow cylinder 31 and a support block 32, and a step 33 is arranged between the hollow cylinder and the support block;
the pressure regulating valve further comprises a positive pressure valve 4, one end of the positive pressure valve 4 is connected with a guide rod 41, one end of the guide rod penetrates through the hollow cylinder 31, a main spring 42 is sleeved on the guide rod 41, one end of the main spring 42 is located in a groove 43 on the side face of the positive pressure valve, and the other end of the main spring 42 is located in a step 33 between the hollow cylinder and the supporting block;
a groove 44 with an inclined side surface is formed in the other side of the positive pressure valve 4, a plurality of through holes 45 are formed in the bottom surface of the groove, a matched truncated cone-shaped negative pressure valve 5 is placed in the groove, one end of the negative pressure valve 5 is connected with a guide rod 51, and one end of the guide rod 51 sequentially penetrates through the positive pressure valve 4 and the guide rod 41 and extends out of the hollow cylinder 31; the part of the guide rod 51 extending out of the hollow cylinder is sleeved with a negative pressure spring 52; one end of the negative pressure spring 52 is limited by a nut 53, and the other end of the negative pressure spring contacts the end surface of the guide rod 41;
the inner wall of the female joint 2 is provided with an inclined surface 21 matched with the outer surface of the positive pressure valve 4.
A sealing groove 22 is formed in the outer surface of one end of the female joint 2, and a sealing ring 23 is installed in the sealing groove.
The outer surface of one end part of the female joint 2 is provided with a ball clamping groove, the side surface of the lower joint 1 is provided with a threaded hole 11, a screw plug 12 is installed in the threaded hole 11, and a clamping ball 13 is arranged between the screw plug 12 and the ball groove.
An external thread 14 is arranged on the outer end surface of the lower joint 1.
The utility model discloses there are three kinds of states:
1. the equilibrium state is stopped, and at this time, the positive pressure valve 4 is pressed against the inclined surface 21 of the inner wall of the female connector 2, as shown in fig. 7. The negative pressure valve 5 abuts against the groove 44 of the positive pressure valve 4.
2. In the forward circulation state, as shown in fig. 8, when the pressure on the right side of the positive pressure valve 4 is higher than that on the left side, the main spring 42 is compressed, the positive pressure valve 4 is separated from the inclined surface of the inner wall of the female joint 2, and the sewage in the pipeline flows from the gap between the positive pressure valve 4 and the inclined surface to the right side and to the left side, and flows as shown by the arrow in fig. 8.
3. In a reverse equilibrium state, as shown in fig. 9, when the pressure on the left side of the positive pressure valve 4 is greater than that on the right side, the negative pressure spring 52 is compressed, the positive pressure valve 4 is separated from the negative pressure valve 5, the through hole 45 is unblocked, and sewage in the pipeline flows from left to right, passes through the through hole 45, then flows out from the gap between the positive pressure valve 4 and the negative pressure valve 5, and flows to the direction shown by the arrow in fig. 9.
The foregoing is illustrative of the preferred embodiments of the present invention, and is not to be construed as limiting the invention, and any modifications, equivalent alterations, improvements and the like made within the spirit and principle of the invention are intended to be included within the scope of the invention.
Claims (5)
1. The utility model provides a two-way balanced pressure anti-overflow valve for borehole operation which characterized in that: the connector comprises a lower connector and a female connector, wherein the lower connector and the female connector are connected with each other;
a support frame is arranged in the lower joint and consists of a hollow cylinder and a support block, and a step is arranged between the hollow cylinder and the support block;
the pressure regulating valve further comprises a positive pressure valve, one end of the positive pressure valve is connected with a guide rod, one end of the guide rod penetrates through the hollow cylinder, a main spring is sleeved on the guide rod, one end of the main spring is located in a groove in the side face of the positive pressure valve, and the other end of the main spring is located in a ladder between the hollow cylinder and the supporting block;
a groove with an inclined side surface is formed in the other side of the positive pressure valve, a plurality of through holes are formed in the bottom surface of the groove, a matched truncated cone-shaped negative pressure valve is placed in the groove, one end of the negative pressure valve is connected with a guide rod, and one end of the guide rod sequentially penetrates through the positive pressure valve and the guide rod and extends out of the hollow cylinder; the part of the guide rod extending out of the hollow cylinder is sleeved with a negative pressure spring; one end of the negative pressure spring is limited by a nut, and the other end of the negative pressure spring contacts the end face of the guide rod.
2. The bidirectional balanced pressure overflow prevention valve for the downhole operation as recited in claim 1, wherein: and the inner wall of the female joint is provided with an inclined plane matched with the outer surface of the positive pressure valve.
3. The bidirectional balanced pressure overflow prevention valve for the downhole operation as recited in claim 1, wherein: a sealing groove is formed in the outer surface of one end of the female joint, and a sealing ring is installed in the sealing groove.
4. The bidirectional balanced pressure overflow prevention valve for the downhole operation as recited in claim 1, wherein: the outer surface of one end part of the female joint is provided with a ball clamping groove, the side surface of the lower joint is provided with a threaded hole, a screw plug is installed in the threaded hole, and a clamping ball is arranged between the screw plug and the ball groove.
5. The bidirectional balanced pressure overflow prevention valve for the downhole operation as recited in claim 1, wherein: and the outer end face of the lower joint is provided with external threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221287651.XU CN217234527U (en) | 2022-05-27 | 2022-05-27 | Bidirectional balanced pressure anti-overflow valve for downhole operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221287651.XU CN217234527U (en) | 2022-05-27 | 2022-05-27 | Bidirectional balanced pressure anti-overflow valve for downhole operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217234527U true CN217234527U (en) | 2022-08-19 |
Family
ID=82822552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221287651.XU Expired - Fee Related CN217234527U (en) | 2022-05-27 | 2022-05-27 | Bidirectional balanced pressure anti-overflow valve for downhole operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217234527U (en) |
-
2022
- 2022-05-27 CN CN202221287651.XU patent/CN217234527U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220819 |