CN215213436U - Leak-stopping float valve - Google Patents
Leak-stopping float valve Download PDFInfo
- Publication number
- CN215213436U CN215213436U CN202121401146.9U CN202121401146U CN215213436U CN 215213436 U CN215213436 U CN 215213436U CN 202121401146 U CN202121401146 U CN 202121401146U CN 215213436 U CN215213436 U CN 215213436U
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- clapper
- valve body
- float valve
- valve
- reset spring
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Abstract
The utility model relates to a leaking stoppage float valve, including external seal, round pin axle, reset spring, clapper, shock ring, valve body, flat pad and holding ring, be close the externally mounted of valve body one end has the external seal the shock ring is installed to the other end of valve body, be provided with the clapper of opening and close to the runner of valve body on the valve body, the one end of this clapper is installed on the valve body through round pin axle pivoted, should clap the board with the valve body between install reset spring, this reset spring makes the clapper set up along the horizontal direction. The utility model has the advantages that: a clapper type structure is adopted for innovative design, and the drift diameter d of the inner hole of the float valve is increased so as to ensure that larger particles of plugging materials pass through smoothly; the clapper structure can effectively solve the problem of the siltation of the plugging material and ensure the sealing reliability; meanwhile, the clapper sealing can realize that the plugging material does not have pressure drop.
Description
Technical Field
The utility model relates to a leaking stoppage float valve relates to the float valve field.
Background
With the development of petroleum and natural gas drilling operation in deep wells and ultra-deep wells in China, various abnormal working conditions are often encountered in the drilling process. Such as formation loss, is one of the problems often encountered in drilling operations. When encountering such a lost formation, the plugging operation must be performed. In the conventional plugging operation, large particles of plugging agents are poured into the underground, such as saw dust and fruit shells mixed with various chemical agents to form an effective plugging material, so that the leaking stratum is plugged.
Currently, the one-way check valve used in the plugging operation is an arrow-type float valve, and when the plugging material flows through an arrow-shaped component flowing through the float valve, the following disadvantages and problems exist: 1. the plugging material is easy to accumulate in the cone sealing area of the arrow-shaped part to form scale deposit, namely the transportation of the plugging material is influenced, and the sealing reliability is further influenced; 2. there is a loss of liquid energy (there is a pressure drop); 3. the effective flow area is limited. Of the above problems, the problem 1 is the most serious, and once the sealing area fails, the valve cannot be cut off for the first time when a well kick occurs, and the float valve cannot function as a safety valve, so that the consequences cannot be imagined.
SUMMERY OF THE UTILITY MODEL
For overcoming the defects of the prior art, the utility model provides a leaking stoppage float valve, the technical scheme of the utility model is that:
a leakage stoppage float valve comprises an outer seal, a pin shaft, a return spring, a clapper, a damping ring, a valve body, a flat gasket and a positioning ring, wherein the outer seal is arranged at the outer part close to one end of the valve body; when the clapper is in the horizontal direction, the clapper is attached to a flat gasket arranged at the position of the flow passage to close the flow passage, and the flat gasket is fixed on the valve body through a positioning ring; when the clapper is in the vertical direction, the clapper is placed in the clapper mounting hole on the side wall of the valve body, and the flow channel is in an open state.
The inner wall of the valve body is provided with a step groove, and the flat gasket is arranged in the step groove.
The clapper is matched with the clapper mounting hole.
The diameter d of the flow passage is 50-60 mm.
The utility model has the advantages that: a clapper type structure is adopted for innovative design, and the drift diameter d of the inner hole of the float valve is increased so as to ensure that larger particles of plugging materials pass through smoothly; the clapper structure can effectively solve the problem of the siltation of the plugging material and ensure the sealing reliability; meanwhile, the clapper sealing can realize that the plugging material does not have pressure drop. Effectively solves and overcomes the defects and problems of the arrow-structured float valve in the plugging operation, and successfully completes the driving protection navigation for the plugging operation of the oil field.
Drawings
Fig. 1 is a schematic view of the main structure of the runner in the open state of the present invention.
Fig. 2 is a schematic view of the main structure of the flow channel of the present invention in a closed state.
Detailed Description
The invention will be further described with reference to specific embodiments, the advantages and features of the invention will become more apparent as the description proceeds. These examples are merely illustrative and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
Referring to fig. 1 and 2, the utility model relates to a leaking stoppage float valve, including external seal 1, round pin axle 2, reset spring 3, clapper 4, shock ring 5, valve body 6, flat 7 and holding ring 8, close to the external installation of one end of valve body 6 has external seal 1, install shock ring 5 at the other end of valve body 6, be provided with clapper 4 that opens and close the runner of valve body 6 on the valve body 6, one end of clapper 4 is installed on valve body 6 through round pin axle 2 pivoted, is installed reset spring 3 between clapper 4 and valve body 6, and reset spring 3 makes clapper 4 set up along the horizontal direction; when the clapper 4 is in the horizontal direction, the clapper 4 is attached to a flat gasket 7 arranged at the position of the flow passage to close the flow passage, and the flat gasket 7 is fixed on the valve body 6 through a positioning ring 8; when the clapper 4 is in the vertical direction, the clapper 4 is arranged at the clapper mounting hole on the side wall of the valve body 6, and the flow passage is in an open state.
The inner wall of the valve body is provided with a step groove, and the flat gasket 7 is arranged in the step groove.
The clapper 4 is movably matched with the clapper mounting hole.
The diameter d of the flow passage is 50-60 mm.
The utility model discloses a theory of operation is:
when the plugging material is poured from the positive direction (from top to bottom), the clapper 4 rotates 90 degrees anticlockwise, so that the flow channel of the valve body is in an open state, and the plugging material can pass through without pressure drop. (as shown in FIG. 1); when liquid flow flows reversely (from bottom to top) in the underground, the clapper 4 rotates clockwise by 90 degrees along the pin shaft 2 under the elastic force operation of the return spring 3 and the action of the liquid flow below, so that the sealing function of the clapper 4 and the flat pad 7 is completed, and the down-hole stop is realized.
The leakage-stopping floating valve of the utility model adopts a clapper type structure, thus thoroughly solving the defects and problems of the floating valve with the original arrow type structure; the problem of scaling of the plugging material on the sealing surface of the float valve is solved, and the potential safety hazard of the float valve sealing is eliminated; the large drift diameter (d) design realizes that the plugging material passes through the float valve without pressure drop, and reduces energy consumption; the leakage stoppage float valve completely meets the requirement of the current leakage stoppage operation and provides powerful guarantee for the smooth completion of the leakage stoppage operation.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. A leakage stoppage float valve is characterized by comprising an outer seal, a pin shaft, a return spring, a clapper, a damping ring, a valve body, a flat gasket and a positioning ring, wherein the outer seal is arranged outside one end close to the valve body; when the clapper is in the horizontal direction, the clapper is attached to a flat gasket arranged at the position of the flow passage to close the flow passage, and the flat gasket is fixed on the valve body through a positioning ring; when the clapper is in the vertical direction, the clapper is placed in the clapper mounting hole on the side wall of the valve body, and the flow channel is in an open state.
2. The leak stoppage float valve according to claim 1, wherein a stepped groove is formed in an inner wall of the valve body, and the flat gasket is placed in the stepped groove.
3. A leaking stoppage float valve according to claim 1 or 2, wherein the clapper is fitted with the clapper mounting hole.
4. A lost circulation float valve according to claim 3, wherein the diameter d of the flow passage is 50-60 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121401146.9U CN215213436U (en) | 2021-06-23 | 2021-06-23 | Leak-stopping float valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121401146.9U CN215213436U (en) | 2021-06-23 | 2021-06-23 | Leak-stopping float valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215213436U true CN215213436U (en) | 2021-12-17 |
Family
ID=79434721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121401146.9U Active CN215213436U (en) | 2021-06-23 | 2021-06-23 | Leak-stopping float valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215213436U (en) |
-
2021
- 2021-06-23 CN CN202121401146.9U patent/CN215213436U/en active Active
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