CN112555467B - Side-mounted floating valve core and assembly method - Google Patents
Side-mounted floating valve core and assembly method Download PDFInfo
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- CN112555467B CN112555467B CN202011419316.6A CN202011419316A CN112555467B CN 112555467 B CN112555467 B CN 112555467B CN 202011419316 A CN202011419316 A CN 202011419316A CN 112555467 B CN112555467 B CN 112555467B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- 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
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (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)
- Lift Valve (AREA)
Abstract
The invention discloses a side-mounted floating valve core and an assembly method, wherein the side-mounted floating valve core comprises a valve body (1) and a valve core assembly (2); a sealing inner conical surface (5) is arranged at the upper part in the valve body, liquid flow passages (6) are arranged at two sides of the valve body below the sealing inner conical surface, a guide seat (7) is arranged at the lower part of the liquid flow passage in the inner hole of the valve body, and the guide seat and the valve body are of an integrated structure; a guide hole (8) is arranged in the center of the guide seat, and a side groove (9) is arranged on one side of the guide hole facing the liquid flow passage; the valve core assembly comprises a valve core (10), a conical cap (11) is arranged at the top end of the valve core, and a valve rod (12) is arranged at the bottom of the conical cap; the cone cap and the valve rod are of an integrated structure; the valve rod is sequentially sleeved with a sealing disc (13), an upper spring seat (14), a spring (15) and a lower spring seat (16) from top to bottom, and the lower spring seat is installed in a guide hole of the valve body. The invention improves the working reliability of the floating valve core, reduces the processing difficulty to the maximum extent, and is more convenient to assemble and disassemble, thereby overcoming the defects in the prior art.
Description
Technical Field
The invention relates to a side-mounted floating valve core and an assembly method thereof, and belongs to the technical field of blowout prevention tools in drilling of oilfield equipment.
Background
The condition that the formation pressure is higher is frequently encountered during conventional drilling, when the underground formation pressure is higher than the drilling hydraulic well pressure, well drilling accidents of well kick and blowout can occur if blowout prevention equipment or blowout prevention tools are not provided, and when a floating valve core is arranged in a drilling tool assembly, the upward flow of liquid flow in a pipe can be blocked rapidly, so that the occurrence of major accidents of well kick and blowout can be effectively prevented. A float valve core key tool is typically used downhole and may be used in conjunction with a screw stabilizer, a buttonholing device, and a float valve joint equipped with a float valve bore. The floating valve core is a one-way valve when the floating valve core works underground, and when the well drilling fluid flows downwards, the floating valve core is opened, so that the drilling fluid can flow downwards; when the underground exudation high-pressure fluid upwards surges through the water hole of the drilling tool, the reverse flow passage of the floating valve core is closed, so that the upward surge of the fluid flow in the pipe tool can be quickly blocked, and the blowout accident can be prevented.
In the prior art, a valve rod is usually connected with a valve cap through a pin shaft or a screw after penetrating into a valve seat from the rear end of a valve body. The front end of the valve rod is connected with the annular cylinder shaft pin at the rear end of the valve cap, the valve rod is an optical axis, and the annular cylinder at the rear end of the valve cap is a through hole which is penetrated in pairs. The other is screw connection between the front end of the valve rod and the cone at the front end of the valve cap. The two connecting structures have the following defects: when the valve rod is connected with the conical cap through the screw, the screw is connected upwards through three hole pin shafts, the processing technology is difficult, the coaxiality of the hole and the shaft is difficult to ensure, the eccentric is slightly caused, and the assembly is difficult or parts are scrapped; the valve rod is connected with a screw pin shaft between the valve caps, the screw is subjected to kick and frequent high pressure and vibration in the pit, the screw is frequently sheared, the valve rod falls off the conical cap, so that the function of the floating valve core is invalid, and the fallen valve rod can block a fluid flow passage of a lower screw drilling tool when the function of the floating valve core is seriously invalid, so that serious underground accidents of screw power failure are caused. Therefore, the prior art still has the defects and needs to be further improved.
Disclosure of Invention
The invention aims to provide a side-mounted floating valve core and an assembly method, which can solve the problems that in the existing structure, a screw is easy to shear, a valve rod falls off or a sealing element at the valve rod fails, so as to improve the working reliability of the floating valve core, reduce the processing difficulty to the maximum extent, and facilitate assembly and disassembly, thereby overcoming the defects in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The invention relates to a side-mounted floating valve core, which comprises a valve body and a valve core assembly; the valve body is cylindrical, the outer circle is provided with a sealing groove, and a sealing ring is arranged in the sealing groove; the upper part of the valve body is provided with a sealing inner conical surface, liquid flow passages are arranged on two sides of the valve body below the sealing inner conical surface, the liquid flow passages are rectangular through holes which radially penetrate through the valve body, a guide seat is arranged at the position, located at the lower part of the liquid flow passages, of an inner hole of the valve body, and the guide seat and the valve body are of an integrated structure; the center of the guide seat is provided with a guide hole, a side groove is formed in one side, facing the liquid flow channel, of the guide hole; the valve core assembly comprises a valve core, the top end of the valve core is provided with a cone cap, the bottom of the cone cap is provided with a valve rod; the cone cap and the valve rod are of an integrated structure; the valve rod is sleeved with a sealing disc, an upper spring seat, a spring and a lower spring seat from top to bottom in sequence, and the lower spring seat is installed in a guide hole of the valve body.
In the side-mounted floating valve core, the outer conical surface of the conical cap is tightly abutted against the sealing inner conical surface of the valve body through a spring; sealing between external conical surface and internal circle of valve body the taper of the conical surfaces is the same and the conical surfaces are connected in a matched manner.
In the side-mounted floating valve core, the axial section shape of the upper spring seat is T-shaped, an annular boss is arranged on the upper portion of the upper spring seat, and a spring limiting boss is arranged at the bottom of the annular boss.
In the side-mounted floating valve core, the axial section shape of the lower spring seat is cross-shaped; the middle part of the lower spring seat is provided with an annular boss, the top of the annular boss is provided with a spring limiting boss, and the bottom of the annular boss is provided with a guide boss; the guide boss is installed in the guiding hole of guide holder.
In the side-mounted floating valve core, the outer diameters of the annular bosses on the upper spring seat and the lower spring seat are both larger than the outer diameter of the spring, the outer diameter of the limiting boss of the spring is slightly smaller than the inner diameter of the spring, and the outer circle of the guide boss of the upper valve body of the lower spring seat is in clearance fit with the guide hole on the valve body.
In the side-mounted floating valve core, the sum of the heights of the spring limiting bosses on the upper spring seat and the lower spring seat is larger than the pressing height of the spring.
In the side-mounted floating valve core, the opening width of the upper side groove of the guide seat is larger than the outer diameter of the valve rod of the valve core.
In the side-mounted floating valve core, an assembly hole for installing a valve core assembly is formed in a valve rod of the valve core.
The invention relates to an assembling method for the side-mounted floating valve core, which comprises the following steps of firstly assembling a valve core assembly and then integrally mounting the assembled valve core assembly in the valve core, wherein the specific assembling steps are as follows:
step one, sleeving a sealing disc, an upper spring seat, a spring and a lower spring seat on a valve rod from one end of the valve rod in sequence;
Step two, holding the annular boss of the lower spring seat to apply force to one end of the conical cap to enable the assembly hole on the valve rod to expose the end face of the guide boss, then inserting a shaft-shaped assembly tool into the assembly hole to clamp the lower spring seat, preventing the spring from rebounding, and completing the assembly of the valve core assembly;
step three, one end of a cone cap of the assembled valve core assembly is obliquely inserted into the inner cavity of the valve body from one side of a liquid flow channel with a side groove, and the cone cap is in primary contact with a sealed inner cone surface in the inner cavity of the valve body;
Holding a guide boss of a lower spring seat in the valve core assembly by hand to compress a spring downwards to enable one end of a valve rod to be exposed out of the end face of the guide boss, pushing the valve rod into a guide hole from a side groove of a guide seat, and then taking out a shaft-shaped assembly tool from an assembly hole;
And step five, loosening a guide boss of a lower spring seat in the valve core assembly, and making the guide boss at the lower end of the lower spring seat rebound and push into a guide hole under the action of a spring to complete the assembly of the side-mounted floating valve core.
Due to the adoption of the technical scheme, the valve core adopts an integral structure, the cone cap and the valve rod are of an integral structure, the technical processability and the structural strength of the valve core are improved, the valve rod obliquely passes through the side groove of the valve body, the guide boss arranged on the lower spring seat of the valve core is arranged in the guide hole of the valve body, and the outer diameter of the guide boss is larger than that of the side groove arranged in the guide hole, so that the valve core assembly axially moves in the valve rod under the action of spring force and structural limitation, and the phenomenon that the screw in the original valve rod and cone cap split structure shears the valve rod to fall off the valve core to fail is solved; the valve body is provided with the side groove, so that the problem of difficult valve core assembly is solved, meanwhile, a valve rod gap enters the valve body guide hole through the side groove, and then the guide boss on the valve core enters the guide hole again without separating from the guide hole. The valve core of the integral structure does not need screw connection, so that the connection part has no sealing requirement, and the risk of sealing failure caused by shearing of the screw is avoided. The annular boss and the guide boss are arranged on the lower spring seat of the guide sleeve, the outer diameter of the annular boss of the lower spring seat is larger than the inner diameter of the guide hole on the guide seat of the valve body, the guide boss is in clearance fit with the guide hole of the valve body, when the upper spring seat is in downward contact with the upper end face of the lower spring seat, the lower end face of the limit boss of the upper spring seat is in contact with the upper end face of the limit boss of the lower spring seat, the valve core stroke is limited, the compression parallel stroke of the valve core stroke is smaller than that of the spring, the spring is effectively protected, the spring is not unstable and compressed in the whole process, the spring is prevented from losing efficacy, and the service life of the spring is prolonged.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the valve body structure of the present invention;
FIG. 3 is a schematic illustration of the spool assembly of the present invention;
FIG. 4 is a schematic illustration of the assembly of the valve cartridge of the present invention.
The marks in the drawings are: 1-valve body, 2-valve core assembly, 3-seal groove, 4-sealing ring, 5-sealed inner conical surface, 6-liquid flow channel, 7-guide seat, 8-guide hole, 9-side groove, 10-valve core, 11-conical cap, 12-valve rod, 13-sealing disk, 14-upper spring seat, 15-spring, 16-lower spring seat, 17-outer conical surface, 18-annular boss, 19-spring limit boss, 20-guide boss and 21-assembly hole.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
The invention relates to a side-mounted floating valve core, which comprises a valve body 1 and a valve core assembly 2; as shown in fig. 2, the valve body 1 is cylindrical, the outer circle of the valve body 1 is provided with a sealing groove 3, and a sealing ring 4 is arranged in the sealing groove 3; the upper part of the inner circle of the valve body 1 is provided with a sealing inner conical surface 5, two sides of the valve body 1 below the sealing inner conical surface 5 are provided with liquid flow channels 6, the liquid flow channels 6 are rectangular through holes penetrating through the valve body 1 in the radial direction, the lower part of the liquid flow channels 6 of the inner hole of the valve body 1 is provided with a guide seat 7, and the guide seat 7 and the valve body 1 are of an integrated structure; the center of the guide seat 7 is provided with a guide hole 8, and one side of the guide hole 8 facing the liquid flow channel 6 is provided with a side groove 9; valve core assembly 2 as shown in fig. 3, the valve core assembly 2 comprises a valve core 10, a conical cap 11 is arranged at the top end of the valve core 10, and a valve rod 12 is arranged at the bottom of the conical cap 11; the cone cap 11 and the valve rod 12 are of an integrated structure; the valve rod 12 is sequentially sleeved with a sealing disc 13, an upper spring seat 14, a spring 15 and a lower spring seat 16 from top to bottom, and the lower spring seat 16 is arranged in the guide hole 8 of the valve body 1. The outer conical surface 17 of the conical cap 11 is tightly abutted against the sealing inner conical surface 5 of the valve body 1 through the spring 15; the outer conical surface 17 is sealed with the inner circle of the valve body 1 the taper of the conical surface 5 is the same and is matched and connected. The axial section shape of the upper spring seat 14 is T-shaped, an annular boss 18 is arranged at the upper part of the upper spring seat 14, and a spring limiting boss 19 is arranged at the bottom of the annular boss 18. The lower spring seat 16 has a cross-shaped axial section; the middle part of the lower spring seat 16 is provided with an annular boss 18, the top of the annular boss 18 is provided with a spring limiting boss 19, and the bottom of the annular boss 18 is provided with a guide boss 20; the guide boss 20 is installed in the guide hole 8 of the guide seat 7. The outer diameters of the annular bosses 18 on the upper spring seat 14 and the lower spring seat 16 are larger than the outer diameter of the spring 15, the outer diameter of the spring limiting boss 19 is slightly smaller than the inner diameter of the spring 15, and the outer circle of the guide boss 20 of the valve body 1 on the lower spring seat 16 is in clearance fit with the guide hole 8 on the valve body 1. The sum of the heights of the spring limit bosses 19 on the upper spring seat 14 and the lower spring seat 16 is greater than the pressing height of the spring 15. The opening width of the upper groove 9 of the guide seat 7 is larger than the outer diameter of the valve rod 12 of the valve core 10. The valve rod 12 of the valve core 10 is provided with an assembly hole 21 for installing the valve core assembly 2.
The invention relates to an assembling method for the side-mounted floating valve core, which comprises the steps of firstly assembling a valve core assembly 2 during assembling, and then integrally installing the assembled valve core assembly 2 in the valve core 1, wherein the specific assembling steps are as follows:
Step one, as shown in fig. 4, sleeving a sealing disc 13, an upper spring seat 14, a spring 15 and a lower spring seat 16 on a valve rod 12 from one end of the valve rod 12 in sequence;
Step two, holding the annular boss 18 of the lower spring seat 16 to apply force to one end of the conical cap 11 to enable the assembly hole 21 on the valve rod 12 to expose the end face of the guide boss 20, then inserting a shaft-shaped assembly tool (not shown in the figure) into the assembly hole 21 to clamp the lower spring seat 16, preventing the spring 15 from rebounding, and completing the assembly of the valve core assembly 2;
step three, one end of a cone cap 11 of the assembled valve core assembly 2 is obliquely inserted into the inner cavity of the valve body 1 from the side of the liquid flow channel 6 provided with the side groove 9, and the cone cap 11 is in primary contact with a sealed inner conical surface 5 in the inner cavity of the valve body 1;
step four, holding a guide boss 20 of a lower spring seat 16 in the valve core assembly 2 to compress a spring 15 downwards so that one end of a valve rod 12 is exposed out of the end face of the guide boss 20, pushing the valve rod 12 into a guide hole 8 from a side groove 9 of a guide seat 7, and then taking out a shaft-shaped assembly tool from an assembly hole 21;
And step five, loosening the guide boss 20 of the lower spring seat 16 in the valve core assembly 2, and making the guide boss 20 at the lower end of the lower spring seat 16 rebound and push into the guide hole 8 under the action of the spring 15 to complete the assembly of the side-mounted floating valve core.
The working process and principle of the invention are further described below:
When the drilling fluid flows to the outer conical surface 17 of the conical cap 11 at the top end of the valve core assembly 2, the high-pressure fluid pushes the valve core 10 to move downwards, the valve core 10 drives the sealing disc 13 and the upper spring seat 14 to move downwards, the upper spring seat 14 compresses the spring 15, and when the lower end surface of the upper spring seat 14 contacts with the upper end surface of the lower spring seat 16, the valve core 10 stops moving downwards, and at the moment, the drilling fluid can flow downwards through the liquid flow channel 6 at the side surface of the valve body 1. When the pressure of the outer conical surface 17 of the valve core 10 is eliminated after the pump is stopped, the spring 15 is reset and stretched, the spring 15 pushes the upper spring seat 14, the sealing disc 13 and the valve core 10 to move upwards, the outer conical surface 17 of the valve core 10 is tightly contacted with the sealing inner conical surface 5 in the inner circle of the valve body 1, and the floating valve is closed. When drilling is normal, when the well pressure provided by the drilling fluid is smaller than the underground stratum pressure, fluid in the stratum and the drilling fluid in the tubular column are pressed to return by the stratum pressure, at the moment, the fluid in the tubular column pushes the valve core 10, the upper spring seat 14 and the sealing disc 13 to ascend, the outer conical surface 17 of the valve core 10 is tightly contacted with the sealing inner conical surface 5 in the inner circle of the valve body 1, the floating valve is closed, the ascending channel of the stratum pressure in the tubular column is cut off, and the occurrence of well kick or blowout accidents is effectively prevented.
The assembly method comprises the following steps: during assembly, the guide boss 20 of the lower spring seat 16 is held by hand to press the spring 15 upwards, the end face of the guide boss 20 of the lower spring seat 16 is exposed out of the assembly hole 21 on the valve rod 12, and a special or proper tool is inserted into the assembly hole 21 of the valve rod 12 to jointly form an assembly body of the valve core assembly 2; the conical cap 11 end of the valve core assembly 2 assembly is obliquely inserted into the sealed inner conical surface 5 of the valve body 1 from the liquid flow channel 6 with the side of the guide hole 8 of the valve body 1, the conical cap 11 is contacted with the sealed inner conical surface 5, the lower spring seat 16 in the valve core assembly 2 is pushed again to compress the spring 15, the end face of the guide boss 20 of the lower spring seat 16 is higher than the upper end face of the guide seat 7 in the valve body 1, the valve rod 12 of the valve core 10 slides into the guide hole 8 from the side face of the side groove 9 of the valve body 1, then the shaft-shaped assembly tool is taken out from the assembly hole 21, and the guide boss 20 in the valve core assembly 2 is guided into the guide hole 8 from the inner cavity of the valve body 1 to the upper side, so that the assembly of the side-mounted floating valve core is completed.
The valve core adopts an integral structure of the valve rod and the conical cap, so that pin shaft connection of the conical cap and the valve rod in the prior art is eliminated, and the process processability of the valve core is improved. The valve core with the valve rod and the cone cap in an integral structure is not connected by a screw, so that the connecting part has no sealing requirement, and the risk of sealing failure caused by shearing of the screw is avoided; and meanwhile, the structural strength and the safety and reliability are improved. In addition, an annular boss and a guide boss are arranged on the lower spring seat, the guide boss is clamped into a guide hole of the valve body, the valve core assembly is arranged in the inner cavity of the valve body, and the valve core assembly cannot be separated from the valve body and needs to be taken out by a tool. In addition, when the upper spring seat is in downward contact with the upper end face of the lower spring seat, the lower end face of the spring limit boss of the upper spring seat is in contact with the upper end face of the spring limit boss of the lower spring seat, so that the valve core stroke is limited, the spring is effectively protected, the spring is not unstable and does not have pressure and state in the whole process, the spring is prevented from losing efficacy, and the service life of the spring is prolonged.
Claims (8)
1. The assembly method of the side-mounted floating valve core comprises a valve body (1) and a valve core assembly (2); the method is characterized in that: the valve body (1) is cylindrical, the outer circle is provided with a sealing groove (3), and a sealing ring (4) is arranged in the sealing groove (3); the upper part of the inner circle of the valve body (1) is provided with a sealing inner conical surface (5), two sides of the valve body (1) below the sealing inner conical surface (5) are provided with liquid flow channels (6), the liquid flow channels (6) are rectangular through holes which radially penetrate through the valve body (1), the inner hole of the valve body (1) is positioned at the lower part of the liquid flow channels (6) and is provided with a guide seat (7), and the guide seat (7) and the valve body (1) are of an integrated structure; a guide hole (8) is arranged in the center of the guide seat (7), and a side groove (9) is arranged on one side of the guide hole (8) facing the liquid flow channel (6); the valve core assembly (2) comprises a valve core (10), a conical cap (11) is arranged at the top end of the valve core (10), and a valve rod (12) is arranged at the bottom of the conical cap (11); the cone cap (11) and the valve rod (12) are of an integrated structure; the valve rod (12) is sequentially sleeved with a sealing disc (13), an upper spring seat (14), a spring (15) and a lower spring seat (16) from top to bottom, and the lower spring seat (16) is arranged in a guide hole (8) of the valve body (1); during assembly, the valve core assembly (2) is assembled firstly, and then the assembled valve core assembly (2) is integrally installed in the valve body (1), and the specific assembly steps are as follows:
step one, sleeving a sealing disc (13), an upper spring seat (14), a spring (15) and a lower spring seat (16) on a valve rod (12) from one end of the valve rod (12) in sequence;
step two, holding an annular boss (18) of a lower spring seat (16) to apply force to one end of a conical cap (11) to enable an assembly hole (21) on a valve rod (12) to be exposed out of the end face of a guide boss (20), then inserting a shaft-shaped assembly tool into the assembly hole (21) to clamp the lower spring seat (16), preventing the spring (15) from rebounding, and completing the assembly of the valve core assembly (2);
step three, one end of a cone cap (11) of the assembled valve core assembly (2) is obliquely inserted into the inner cavity of the valve body (1) from one side of a liquid flow channel (6) provided with a side groove (9), and the cone cap (11) is in primary contact with a sealing inner conical surface (5) in the inner cavity of the valve body (1);
step four, a guide boss (20) of a lower spring seat (16) in the valve core assembly (2) is held by hand to downwards compress a spring (15) so that one end of a valve rod (12) is exposed out of the end face of the guide boss (20), the valve rod (12) is pushed into a guide hole (8) from a side groove (9) of a guide seat (7), and then a shaft-shaped assembly tool is taken out from an assembly hole (21);
And step five, loosening a guide boss (20) of a lower spring seat (16) in the valve core assembly (2), and making the guide boss (20) at the lower end of the lower spring seat (16) rebound and push into a guide hole (8) under the action of a spring (15) to complete the assembly of the side-mounted floating valve core.
2. The method of assembling a side-mounted floating spool according to claim 1, wherein: the outer conical surface (17) of the conical cap (11) is tightly abutted against the sealing inner conical surface (5) of the valve body (1) through a spring (15); the taper of the outer conical surface (17) is the same as that of the sealing inner conical surface (5) of the inner circle of the valve body (1) and is connected in a matched manner.
3. The method of assembling a side-mounted floating spool according to claim 1, wherein: the axial section shape of the upper spring seat (14) is T-shaped, an annular boss (18) is arranged on the upper portion of the upper spring seat (14), and a spring limiting boss (19) is arranged at the bottom of the annular boss (18).
4. The method of assembling a side-mounted floating spool according to claim 1, wherein: the axial section shape of the lower spring seat (16) is cross-shaped; an annular boss (18) is arranged in the middle of the lower spring seat (16), a spring limiting boss (19) is arranged at the top of the annular boss (18), and a guide boss (20) is arranged at the bottom of the annular boss (18); the guide boss (20) is arranged in the guide hole (8) of the guide seat (7).
5. The method of assembling a side-mounted floating spool according to claim 1, wherein: the outer diameters of annular bosses (18) on the upper spring seat (14) and the lower spring seat (16) are both larger than the outer diameter of the spring (15), the outer diameter of a spring limiting boss (19) is slightly smaller than the inner diameter of the spring (15), and the outer circle of a guide boss (20) on the lower spring seat (16) is in clearance fit with a guide hole (8) on the valve body (1).
6. The method of assembling a side-mounted floating spool according to claim 1, wherein: the sum of the heights of the spring limit bosses (19) on the upper spring seat (14) and the lower spring seat (16) is larger than the pressing height of the spring (15).
7. The method of assembling a side-mounted floating spool according to claim 1, wherein: the opening width of the upper groove (9) of the guide seat (7) is larger than the outer diameter of the valve rod (12) of the valve core (10).
8. The method of assembling a side-mounted floating spool according to claim 1, wherein: the valve rod (12) of the valve core (10) is provided with an assembly hole (21) for installing the valve core assembly (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011419316.6A CN112555467B (en) | 2020-12-07 | 2020-12-07 | Side-mounted floating valve core and assembly method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011419316.6A CN112555467B (en) | 2020-12-07 | 2020-12-07 | Side-mounted floating valve core and assembly method |
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| Publication Number | Publication Date |
|---|---|
| CN112555467A CN112555467A (en) | 2021-03-26 |
| CN112555467B true CN112555467B (en) | 2024-11-26 |
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| CN202011419316.6A Active CN112555467B (en) | 2020-12-07 | 2020-12-07 | Side-mounted floating valve core and assembly method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113915186A (en) * | 2021-10-12 | 2022-01-11 | 山东大学 | Hydraulic one-way valve |
| CN113882820B (en) * | 2021-12-08 | 2022-02-22 | 西南石油大学 | Blowout prevention valve in drilling tool |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214063894U (en) * | 2020-12-07 | 2021-08-27 | 贵州高峰石油机械股份有限公司 | Side-mounted floating valve core |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB813183A (en) * | 1956-03-16 | 1959-05-13 | Baker Oil Tools Inc | Drill pipe non-return valve |
| GB1266306A (en) * | 1969-04-22 | 1972-03-08 | ||
| CN106089135A (en) * | 2016-08-29 | 2016-11-09 | 东营市创元石油机械制造有限公司 | Oil drilling arrow formula drilling tool float valve |
| CA3084462A1 (en) * | 2017-10-16 | 2019-04-25 | Pamala Ranee CRESS | High pressure float valve |
| CN207486144U (en) * | 2017-11-27 | 2018-06-12 | 贵州高峰石油机械股份有限公司 | A kind of float valve core drilling tool check valves |
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2020
- 2020-12-07 CN CN202011419316.6A patent/CN112555467B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214063894U (en) * | 2020-12-07 | 2021-08-27 | 贵州高峰石油机械股份有限公司 | Side-mounted floating valve core |
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