CN211667185U - Cock valve with pressure switch - Google Patents
Cock valve with pressure switch Download PDFInfo
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- CN211667185U CN211667185U CN202020027024.7U CN202020027024U CN211667185U CN 211667185 U CN211667185 U CN 211667185U CN 202020027024 U CN202020027024 U CN 202020027024U CN 211667185 U CN211667185 U CN 211667185U
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- shifting block
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Abstract
The utility model provides a simple structure, convenient operation's area pressure switch plug valve when pressure is higher, reduces the required dynamics of switch valve, guarantees the timely switch of ooff valve. The technical scheme includes that the valve comprises a valve body, a valve core assembly and a rotating assembly; the valve core assembly comprises a support sleeve, a positioning clamping valve, a lower valve seat, a valve core and an upper valve seat, wherein the lower valve seat, the valve core and the upper valve seat are arranged between the support sleeve and the positioning clamping valve; the rotary component comprises a knob and a shifting block, the knob is in rotary linkage fit with the valve core through the shifting block, a positioning shaft is arranged at the axial corresponding end of the joint of the valve core and the shifting block, the positioning shaft is coaxial with the shifting block, and the positioning shaft and the inner wall of the valve body between the upper valve seat and the lower valve seat form limiting fit. The utility model has the advantages of reasonable design, processing and simple to use effectively improve plug valve switching efficiency and reliability.
Description
Technical Field
The utility model relates to a take pressure switch plug valve among the valve technical field, the specially adapted is in well drilling and workover construction operation construction.
Background
The plug valve is used as an internal blowout prevention ball valve of a drilling tool, is widely applied to drilling and workover construction operation at home and abroad, and is used for isolating or communicating liquid in a drill string water hole. Such as: the drilling fluid is opened to enter the drill string in the normal drilling process, and the drilling fluid can be prevented from splashing on a well platform by closing the valve when a single joint is connected, so that the waste of the drilling fluid is avoided, and the environment-friendly requirement is met; when accidents such as well kick, blowout and the like occur underground, the valve is closed in time, so that combustible gas or liquid can be prevented from overflowing out of a well mouth, and casualties and property loss are prevented. To address the above problems, a push-to-open plug valve is required.
Chinese patent CN109488783A discloses a plug valve with pressure switch and its using method, which includes a valve body, a combination of valve core, a valve needle and an operation assembly for rotating the valve core, a bypass for circulation is provided in the valve body, the bypass has two outlet ends and communicates the fluid on the two sides of the valve core, the valve needle is installed in the valve body, the first end of the valve needle is clamped into the bypass, the second end of the valve needle is used for operating the clamping bypass, the valve needle seals and blocks the liquid circulation in the bypass by clamping into the bypass, a lubricating liquid is provided in the bypass, the valve core is located in the valve body, one end of the operation assembly is connected to the valve core and. This patent application also discloses the following technical features:
the plug valve with the pressure switch further comprises a lower ball seat, a wave spring, an upper ball seat, an upper splicing ring, a lower splicing ring, a support ring connected with the top of the upper splicing ring and an elastic retainer ring for a hole positioned at the top of the support ring, wherein the lower ball seat is arranged in the valve body, the upper ball seat is connected to the top of the valve core, and the wave spring is arranged at the bottom of the lower ball seat; the operating assembly is provided with one or two opposite positions and comprises operating keys, operating key sleeves positioned outside the operating keys and ten bytes connected with the operating keys.
The first end of the valve needle is clamped and blocked by the bypass in a jacking mode, and the width or the diameter of the first end of the valve needle is larger than the section of the bypass; or the first end of the valve needle is clamped and the bypass is blocked in a rotating mode, and the second end of the valve needle is provided with a clamping line for rotating and clamping the tool; furthermore, the first end of the valve needle is conical, the second end face of the valve needle is inwards concave to form a big-end inner hexagonal, and the side face of the second end of the valve needle is provided with threads.
The plug valve with the pressure switch further comprises an annular safety clamp, the safety clamp is provided with a needle hole for an insertion tool to clamp the backward movement of the valve needle, the needle hole is communicated with the inner side surface and the outer side surface of the safety clamp, and the size of the needle hole is smaller than the size of the section of the second end of the valve needle; the inner side of the safety clamp is also provided with a limit sinking platform for limiting the valve needle to withdraw.
In a preferred embodiment of the present invention, the safety band includes a first semi-hoop body and a second semi-hoop body, the first semi-hoop body and the second semi-hoop body are fixed to each other outside the valve body by a locking member, and the needle hole is disposed in the first semi-hoop body.
The valve core is a ball core, and the ball core is provided with a through hole which is communicated with liquid inside and outside the ball core when the two ends of the valve body are opened by the ball valve.
The pressure switch plug valve further comprises a valve needle sealing ring, the valve needle sealing ring is arranged on the outer side of the second end of the valve needle, and a gap between the bypass and the valve needle is sealed by the valve needle sealing ring.
The bypass valve has the advantages that the bypass is arranged on the valve body, liquid at two ends of the valve core is dredged, pressure difference is balanced, meanwhile, the valve is used for sealing the bypass, the bypass can be opened by rotating and unscrewing the valve needle when the bypass valve is used, the withdrawing process of the valve needle is limited through the safety clamp, the effect of safe implementation is achieved, the valve core is rotated through the operation assembly to perform switching operation, so that the bypass is effectively switched on and off in a high-pressure state, the pressure of the upper cavity and the lower cavity of the switch valve can be balanced, the switch valve is easily opened and closed under pressure, and the bypass valve is particularly suitable for occasions needing the switch under pressure, so that the construction of well drilling, well killing and the like is facilitated, and the safety and the capability.
However, although the invention solves the problem of opening and closing the plug valve under the high-pressure condition, the following problems are brought about: firstly, the valve body is additionally provided with a pipeline, which brings difficulty to processing and manufacturing; secondly, the opening and closing of the bypass requires the valve needle to be matched with the bypass, so that the operation content is increased; thirdly, the whole structure is complex and the operation is complex.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the problem that prior art exists, provide a simple structure, convenient operation's area and press switch plug valve, when pressure is higher, reduce the required dynamics of ooff valve, guarantee the timely switch of ooff valve.
The technical scheme is as follows:
a plug valve with a pressure switch comprises a valve body, a valve core assembly and a rotating assembly; the valve core assembly comprises a support sleeve, a positioning clamping valve, a lower valve seat, a valve core and an upper valve seat, wherein the lower valve seat, the valve core and the upper valve seat are arranged between the support sleeve and the positioning clamping valve; the rotary component comprises a knob and a shifting block, the knob is in rotary linkage fit with the valve core through the shifting block, a positioning shaft is arranged at the axial corresponding end of the joint of the valve core and the shifting block, the positioning shaft is coaxial with the shifting block, and the positioning shaft and the inner wall of the valve body between the upper valve seat and the lower valve seat form limiting fit.
The above scheme further comprises:
a groove for installing a positioning shaft is formed in the inner wall of the valve body, and the positioning shaft is installed in the groove.
And a thrust bearing is arranged in the groove and connected with the positioning shaft.
An upper protecting cover is arranged between the positioning clamping flap and the upper valve seat, the upper protecting cover is of an annular structure with a central through hole, the lower end of the upper protecting cover is in plug-in sealing fit with the upper valve seat, the upper end of the upper protecting cover is in limit fit with the positioning clamping flap, and the outer periphery of the upper protecting cover is in sealing fit with the inner wall of the valve body.
The rotating joint part of the shifting block and the valve body is provided with a resistance reducing sheet.
And sealing rings or a combination of the sealing rings and check rings are arranged among the contact surfaces of the supporting sleeve, the lower valve seat, the upper protecting cover and the valve body.
The valve body is provided with an annular clamping groove matched with the positioning clamping clack in a clamping mode, and the positioning clamping clack is clamped in the annular clamping groove of the valve body through the combination of the spring clamp and the retaining ring.
The joint of the upper valve seat and the valve body is also provided with a stop clip.
The utility model has the advantages that:
the positioning shaft is additionally arranged at the joint of the valve core and the valve body, so that the cock is kept at the central position when the pressure is higher, the increase of the frictional resistance between the cock and the valve seat due to uneven stress is prevented, the rotation resistance generated by the valve core and the valve seat due to high pressure is reduced to the maximum extent, and the problem that the cock is difficult to open and close due to high pressure in a pipe in the drilling and workover construction operation can be effectively solved by matching with other improvements; the overall structure is reasonable in design, the processing and the use are simple, and the switching efficiency and the reliability of the plug valve are effectively improved.
Drawings
Fig. 1 is a schematic overall structure diagram of an exemplary embodiment of the present invention;
in the figure, 1 is a valve body, 2 is a support sleeve, 3 is a resistance reducing sheet, 4/8/10/23/26 is a sealing ring, 5/9/11/24/27 is a retaining ring, 6 is a knob, 7 is a shifting block, 12 is an upper protective cover, 13 is a positioning clamping flap, 14 is a spring clip, 15 is a retaining ring, 16/25 is a U-shaped ring, 17 is an upper valve seat, 18 is a stop clip, 19 is a positioning shaft, 20 is a valve core, 21 is a filler and 22 is a lower valve seat.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
Example 1
A plug valve with a pressure switch comprises a valve body 1, a valve core assembly and a rotating assembly; the valve core assembly comprises a support sleeve 2, a positioning clamping clack 13, a lower valve seat 22 arranged between the support sleeve 2 and the positioning clamping clack 13, a valve core 20 and an upper valve seat 17; the rotating assembly comprises a knob 6 and a shifting block 7, the knob 6 is in rotary linkage fit with the valve core 20 through the shifting block 7, and the above parts are the existing plug valve mechanism. On the basis, the improvement of the embodiment is that a positioning shaft 19 is arranged on the valve core 6 at the axial corresponding end of the joint of the valve core 20 and the shifting block 7, the positioning shaft 19 is coaxial with the shifting block 7, and the positioning shaft 19 forms limit fit with the inner wall of the valve body 6 between the upper valve seat and the lower valve seat.
Furthermore, a groove for installing a positioning shaft is formed in the inner wall of the valve body, and the positioning shaft is installed in the groove. And a thrust bearing is arranged in the groove and connected with the positioning shaft.
The embodiment solves the problem that the friction resistance of the valve core and the valve seat is increased by adding the positioning shaft on the valve core and the positioning matching of the valve body.
Example 2
On the basis of the embodiment 1, the valve core assembly is further optimized around the valve core assembly, so that the sealing performance and the operability of the valve core assembly and the valve body are improved. The method comprises the following steps:
an upper protecting cover 12 is arranged between the positioning clamping flap 13 and the upper valve seat 17, the upper protecting cover 12 is of an annular structure with a central through hole, the lower end of the upper protecting cover is in plug-in sealing fit with the upper valve seat 17, the upper end of the upper protecting cover is in limit fit with the positioning clamping flap 13, and the outer periphery of the upper protecting cover is in sealing fit with the inner wall of the valve body 1.
A drag reduction sheet 3 is arranged at the rotary joint part of the shifting block 7 and the valve body 1.
And sealing rings or the combination of the sealing rings (4/8/10/23/26) and check rings (5/9/11/24/27) are arranged among the contact surfaces of the support sleeve 2, the lower valve seat 22, the upper valve seat 17, the upper protective cover 12 and the valve body 1.
The valve body 1 is provided with an annular clamping groove matched with the positioning clamping clack 13 in a clamping mode, and the positioning clamping clack 13 is clamped in the annular clamping groove of the valve body through the combination of the spring clamp 14 and the retaining ring 15.
A stop catch 18 is also provided at the junction of the upper valve seat 17 and the valve body 1.
Exemplary embodiment 3
The cock with the pressure switch shown in figure 1 comprises a valve body 1, a valve core assembly and a rotating assembly.
The valve core assembly comprises a support sleeve 2, a positioning clamping clack 13, a lower valve seat 22 arranged between the support sleeve 2 and the positioning clamping clack 13, a valve core 20 and an upper valve seat 17.
The rotating assembly comprises a knob 6 and a shifting block 7, the knob 6 is in rotary linkage fit with the valve core 20 through the shifting block 7, and the above parts are the existing plug valve mechanism. The valve core 6 at the axial corresponding end of the joint of the valve core 20 and the shifting block 7 is provided with a positioning shaft 19, the positioning shaft 19 is coaxial with the shifting block 7, and the positioning shaft 19 forms limit fit with the inner wall of the valve body 6 between the upper valve seat and the lower valve seat. The valve body is provided with a groove for installing a positioning shaft on the inner wall, and the positioning shaft is arranged in the groove. And a thrust bearing is arranged in the groove and connected with the positioning shaft. An upper protecting cover 12 is arranged between the positioning clamping flap 13 and the upper valve seat 17, the upper protecting cover 12 is of an annular structure with a central through hole, the lower end of the upper protecting cover is in plug-in sealing fit with the upper valve seat 17, the upper end of the upper protecting cover is in limit fit with the positioning clamping flap 13, and the outer periphery of the upper protecting cover is in sealing fit with the inner wall of the valve body 1. A drag reduction sheet 3 is arranged at the rotary joint part of the shifting block 7 and the valve body 1. And sealing rings or the combination of the sealing rings (4/8/10/23/26) and check rings (5/9/11/24/27) are arranged among the contact surfaces of the support sleeve 2, the lower valve seat 22, the upper valve seat 17, the upper protective cover 12 and the valve body 1. The valve body 1 is provided with an annular clamping groove matched with the positioning clamping clack 13 in a clamping mode, and the positioning clamping clack 13 is clamped in the annular clamping groove of the valve body through the combination of the spring clamp 14 and the retaining ring 15. A stop catch 18 is also provided at the junction of the upper valve seat 17 and the valve body 1.
Claims (8)
1. A plug valve with a pressure switch comprises a valve body, a valve core assembly and a rotating assembly; the valve core assembly comprises a support sleeve, a positioning clamping valve, a lower valve seat, a valve core and an upper valve seat, wherein the lower valve seat, the valve core and the upper valve seat are arranged between the support sleeve and the positioning clamping valve; the rotary component comprises a knob and a shifting block, the knob is in rotary linkage fit with the valve core through the shifting block, and the rotary component is characterized in that a positioning shaft is arranged at the axial corresponding end of the joint of the valve core and the shifting block, the positioning shaft is coaxial with the shifting block, and the positioning shaft and the inner wall of the valve body between the upper valve seat and the lower valve seat form limit fit.
2. A plug valve with pressure switch as claimed in claim 1, wherein the inner wall of the valve body is provided with a groove for mounting the positioning shaft, and the positioning shaft is mounted in the groove.
3. The plug valve with pressure switch of claim 2, wherein a thrust bearing is arranged in the groove, and the thrust bearing is connected with the positioning shaft.
4. A plug valve with pressure switch according to claim 1, 2 or 3, characterized in that an upper protecting cover is arranged between the positioning clip flap and the upper valve seat, the upper protecting cover is a ring structure with a central through hole, the lower end of the upper protecting cover forms a plug-in sealing fit with the upper valve seat, the upper end of the upper protecting cover forms a limit fit with the positioning clip flap, and the outer periphery of the upper protecting cover forms a sealing fit with the inner wall of the valve body.
5. A plug valve with pressure switch according to claim 1, 2 or 3, characterized in that the rotation joint of the shifting block and the valve body is provided with a resistance reducing sheet.
6. A plug valve with pressure switch according to claim 4, characterized in that a sealing ring or a combination of the sealing ring and a retaining ring is arranged between the contact surfaces of the supporting sleeve, the lower valve seat, the upper protecting cover and the valve body.
7. A plug valve with pressure switch according to claims 1, 2 and 3, characterized in that the valve body is provided with an annular clamping groove matched with the positioning clamping flap in a clamping way, and the positioning clamping flap is clamped in the annular clamping groove of the valve body through the combination of a spring clip and a retaining ring.
8. A plug valve with pressure switch as claimed in claim 1, 2 or 3, wherein the joint of the upper valve seat and the valve body is further provided with a stop clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020027024.7U CN211667185U (en) | 2020-01-07 | 2020-01-07 | Cock valve with pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020027024.7U CN211667185U (en) | 2020-01-07 | 2020-01-07 | Cock valve with pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211667185U true CN211667185U (en) | 2020-10-13 |
Family
ID=72738602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020027024.7U Active CN211667185U (en) | 2020-01-07 | 2020-01-07 | Cock valve with pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211667185U (en) |
-
2020
- 2020-01-07 CN CN202020027024.7U patent/CN211667185U/en active Active
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