CN114486058A

CN114486058A - Instrument oil pressure seat capable of preventing petroleum leakage for oil field

Info

Publication number: CN114486058A
Application number: CN202210234643.7A
Authority: CN
Inventors: 仝津津
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-05-13

Abstract

The invention relates to the technical field of oil pipe measuring equipment, in particular to an instrument oil pressure seat capable of preventing oil leakage for an oil field. The technical problem of the invention is that: the instrument oil pressure seat is convenient to assemble and disassemble and capable of manually relieving pressure and preventing oil leakage for the oil field. The technical scheme is as follows: the utility model provides an instrument oil pressure seat that oil field was revealed with preventing oil, is equipped with locking mechanical system including oil pressure seat, locking mechanical system, sealing mechanism, closing mechanism and pressure release mechanism in the top of oil pressure seat, and the last sealing mechanism that is provided with of locking mechanical system is provided with closing mechanism in the oil pressure seat, the last pressure release mechanism that is provided with of closing mechanism. The device is quickly mounted and dismounted through the locking mechanism, the multistage high sealing performance of the device is realized through the sealing mechanism, and the pressure relief mechanism is used for discharging and relieving the pressure of the sealed oil on the upper part of the oil pressure seat.

Description

Instrument oil pressure seat capable of preventing petroleum leakage for oil field

Technical Field

The invention relates to the technical field of oil pipe measuring equipment, in particular to an instrument oil pressure seat capable of preventing oil leakage for an oil field.

Background

In the process of oil exploitation, an oil pressure seat is required to be arranged on an oil transportation pipeline, and instruments such as a pressure transmitter are mounted at the upper end of the oil pressure seat, so that pressure detection is convenient for the transported oil.

When the existing oil pressure seat is used for installing a pressure transmitter, the pressure transmitter is fixedly connected to the upper end of the oil pressure seat through bolt connection, because the pressure of oil in the transportation process continuously fluctuates, along with discontinuous impact of the pressure, the sealing property between the pressure transmitter and the oil pressure seat is poor, the oil leakage pollutes the environment, meanwhile, the installation mode of fixing the pressure transmitter through bolts is complicated, the tightening force of all bolts and the fastening mode of the bolts need to be constantly paid attention, if the fastening mode of the bolts is not synchronously pushed, the pressure transmitter and the oil pressure seat can be inclined, the sealing property is poor, the oil leakage is caused, and when the pressure transmitter on the oil pressure seat is replaced, along with the closing of the oil pressure seat, the oil with larger pressure still exists between the oil pressure transmitter and the oil pressure seat, the bolts are directly loosened to take down the pressure transmitter, the oil under high pressure can injure operators by mistake and cause environmental pollution when being sprayed outwards.

Therefore, the instrument oil pressure seat which is convenient to assemble and disassemble and can be manually decompressed and used for the oil field and can prevent oil leakage is provided.

Disclosure of Invention

In order to overcome the defects that the sealing performance between the oil pressure seat and the pressure transmitter is poor, the bolt fixing mode between the oil pressure seat and the pressure transmitter is complicated, and the oil between the oil pressure seat and the oil pressure seat has larger pressure when the pressure transmitter is disassembled, the technical problems of the invention are as follows: the instrument oil pressure seat is convenient to assemble and disassemble and capable of manually relieving pressure and used for the oil field and preventing oil leakage.

The technical scheme is as follows: the utility model provides an oil field is with instrument oil pressure seat that can prevent oil and reveal, including the oil pressure seat, locking mechanical system, sealing mechanism, closing mechanism and pressure relief mechanism, the top of oil pressure seat is equipped with and is provided with locking mechanical system, locking mechanical system is used for making this device fix, the last sealing mechanism that is provided with of locking mechanical system, sealing mechanism is used for increasing the leakproofness between locking mechanism and the oil pressure seat, be provided with closing mechanism in the oil pressure seat, closing mechanism is used for making oil pressure seat and oil transportation pipeline intercommunication and closed, the last pressure relief mechanism that is provided with of closing mechanism, pressure relief mechanism is used for discharging the pressure relief to the oil in the oil pressure seat.

More preferably, the locking mechanism comprises a fixed cover, a first rotating ring, locking blocks, a first sealing ring, a first straight gear, a second rotating ring, a pressure transmitter, a slide rail and an n-shaped fixed frame, wherein the inner side wall of the upper end of the oil pressure seat is provided with a convex block, the outer side wall of the upper end of the oil pressure seat is uniformly provided with three convex blocks, the upper end of the oil pressure seat is slidably provided with the fixed cover, the right side wall of the lower part of the fixed cover is provided with a rectangular chute, the convex block of the oil pressure seat is positioned in the rectangular chute and used for positioning the device, the outer side wall of the fixed cover is rotatably provided with the first rotating ring, the lower end of the first rotating ring is uniformly and fixedly connected with three locking blocks, the lower end of the fixed cover is fixedly connected with the first sealing ring, the inner side wall of the first sealing ring is arranged in an inclined plane, the inclined plane of the first sealing ring is used for increasing the contact area with the oil, and the first straight gear is rotatably arranged inside the fixed cover, the inside of first straight gear rotates and is provided with the second rotating ring, and the middle part of second rotating ring is fixed with pressure transmitter, and pressure transmitter's lower part is seted up flutedly, and the even rigid coupling in first rotating ring upper end has three slide rail, and the one end rigid coupling of three n shape mount is in the upper end of second rotating ring, and the other end of three n shape mount slides on three slide rail respectively, three n shape mount circumference evenly distributed.

More preferably, the sealing mechanism comprises a first sliding ring, a second sealing ring, a third sliding ring, a fourth sliding ring, a first spring, a sliding block and a triangular convex ring, a first annular groove is formed in the lower end of the fixed cover, the first sliding ring is arranged in the first annular groove in a sliding manner, a second annular groove is formed in the lower end of the fixed cover, the second annular groove is located on the outer ring of the first annular groove, six first cylindrical holes are formed in the middle of the fixed cover and are uniformly distributed, each first cylindrical hole is respectively communicated with the first annular groove and the second annular groove, a second sliding ring and a second sealing ring are arranged in the second annular groove in a sliding manner, the second sealing ring is located below the second sliding ring, the inner side wall of the fixed cover is provided with a second sealing ring, a plurality of second cylindrical holes are formed in the groove of the fixed cover, each second cylindrical hole is respectively communicated with the groove of the fixed cover and the first annular groove, the fixed cover, the third sealing ring, the second cylindrical hole, the first ring groove, the first sliding ring, the first cylindrical hole, the second ring groove and the second sliding ring form a chamber, the cavity is filled with hydraulic oil, the upper end of the hydraulic seat is provided with a third sliding ring in a sliding manner, the third sliding ring is provided with a fourth sliding ring in a sliding manner, a plurality of first springs are fixedly connected between the third sliding ring and the fourth sliding ring, the lower ends of three convex blocks of the hydraulic seat are provided with first sliding chutes, each first sliding chute is internally provided with a sliding block in a sliding manner, the upper parts of the three sliding blocks penetrate through the hydraulic seat, the upper ends of the three sliding blocks are fixedly connected with the fourth sliding ring, the lower ends of the sliding blocks are arranged in an inclined plane manner, the locking block is convenient to rotate and located below the convex block of the oil pressure seat, a triangular convex ring is fixedly connected to the upper end of the oil pressure seat, a triangular groove is formed in the lower end of the fixing cover, and the triangular groove is located between the first annular groove and the second annular groove.

More preferably, the third seal ring has inclined upper and lower end surfaces for increasing sealability between the third seal ring and the fixed cover and the first spur gear.

More preferably, the closing mechanism comprises a first fixed block, a fourth sealing ring, a first rotating block, a first convex column, a rotating sleeve, a first sliding block, a fifth sealing ring, a second sliding block, a third rotating ring and a second rotating block, the middle part of the inner side wall of the oil pressure seat is fixedly connected with the first fixed block, three first fan-shaped through holes are uniformly formed in the first fixed block, the lower part of each first fan-shaped through hole is fixedly connected with the fourth sealing ring, the inner side wall of the fourth sealing ring is an inclined plane for increasing the sealing property between the fourth sealing ring and the first rotating block, three arc-shaped chutes are uniformly formed in the upper end of the first fixed block, the first rotating block is rotatably arranged in the first fixed block, the three first convex columns are uniformly and fixedly connected to the upper end of the first rotating block, the three first convex columns are respectively positioned in the three arc-shaped chutes, the three second fan-shaped through holes are uniformly formed in the first rotating block, first fan-shaped through-hole and the fan-shaped through-hole of second are crisscross, the middle part rigid coupling of first rotating block has the rotation cover, the rotation cover pierces through first fixed block and rather than rotating the setting, three second spout is evenly seted up to the upper portion inside wall of rotation cover, it is provided with first sliding block to slide in the three second spout, the lower extreme rigid coupling of first sliding block has the fifth sealing ring, the upper end rigid coupling of first sliding block has the second sliding block, the upper end of rotating the cover rotates and is provided with the third swivel becket, the lateral wall of third swivel becket and oil pressure seat rotates the setting, the upper end of third swivel becket rotates and is provided with the second rotating block, the third spout has been seted up in the second rotating block lower part, the upper end of second sliding block is located and slides in the third spout.

More preferably, the pressure relief mechanism comprises a second straight gear, a first fixed column, a cylindrical shell, an L-shaped piston rod, a third convex column, a second fixed column, a blind hole fixed column, a first tension spring, a frustum fixed block, a fixed assembly and a positioning assembly, wherein the upper end of the right part of the fixed cover is rotatably provided with the second straight gear, the eccentric part of the upper end of the second straight gear is rotatably provided with a handle, the second straight gear is meshed with the first straight gear, the fixed assembly is arranged above the second straight gear, the lower end of the first straight gear is uniformly and fixedly connected with three first fixed columns, the third rotating ring is uniformly provided with three second cylindrical through holes, the upper end of each second cylindrical through hole is provided with a chamfer, the lower part of the first fixed column penetrates through the second cylindrical through holes, the lower end of the third rotating ring is provided with three groups of positioning assemblies, the three groups of positioning assemblies are respectively positioned below the three second cylindrical through holes, the lower end face of the third rotating ring is provided with a special-shaped annular groove, the middle side wall of the rotating sleeve is uniformly and fixedly connected with three cylindrical shells, the middle side wall of the rotating sleeve is uniformly provided with three through holes, the three through holes of the rotating sleeve are respectively opposite to the middle parts of the three cylindrical shells, the middle part of each cylindrical shell is provided with an L-shaped piston rod in a sliding manner, the upper ends of the three L-shaped piston rods are all positioned in the special-shaped annular groove, the side wall of the third rotating ring is uniformly and fixedly connected with three third convex columns, the side wall of the second sliding block is provided with a guide groove, the three third convex columns are all positioned in the guide groove, the upper side wall of the rotating sleeve is uniformly provided with three rectangular through holes, the lower end of the first sliding block is fixedly connected with a second fixing column, the lower part of the second fixing column is provided with a blind hole fixing column in a sliding manner, a first tension spring is fixedly connected between the second fixing column and the blind hole fixing column, and the lower end of the blind hole is fixedly connected with a frustum fixing column, the inner side wall of the lower end of the rotating sleeve is an inclined plane, and the inclined plane of the rotating sleeve is matched with the frustum fixing block.

More preferably, the section of the arc of the special-shaped ring groove closest to the center of the third rotating ring and the section of the arc of the special-shaped ring groove farthest from the center of the third rotating ring are both circular arcs, other parts are connected through smooth arcs to form a closed special-shaped ring groove for enabling the L-shaped piston rod to perform intermittent reciprocating motion, and the guide groove is matched with the special-shaped ring groove for enabling oil in the oil pressure seat to be discharged.

More preferably, the fixing assembly comprises a third fixing column, a fixing rod and a second tension spring, the third fixing column is arranged in each of the two n-shaped fixing frames on the right in a sliding mode, the fixing rod is fixedly connected to the upper end of the third fixing column, the second tension spring is fixedly connected between the fixing rod and the two n-shaped fixing frames, the two second tension springs are respectively sleeved on the adjacent third fixing columns, two third cylindrical through holes are formed in the first straight gear, the lower portions of the two third fixing columns are respectively located in the two third cylindrical through holes, and the fixing assembly is used for enabling the closing mechanism and the pressure relief mechanism to rotate together.

More preferably, locating component is including the second fixed block, the third sliding block, the second projection, fourth sliding block and second spring, the left part lower extreme rigid coupling of third swivel becket, the fourth spout has been seted up to the left side wall of second fixed block, it is provided with the third sliding block to slide in the fourth spout, the third sliding block is located second cylinder through-hole under, the equal rigid coupling in both sides has the second projection around the left part of third sliding block, the inside of second fixed block slides and is provided with the fourth sliding block, the right flank of fourth sliding block is coarse arc, two fifth spouts have been seted up to the left part of fourth sliding block, fifth spout slope sets up, two second projections are located two fifth spouts respectively, the rigid coupling has the second spring between second fixed block and the fourth sliding block.

More preferably, still including self-locking mechanism, the right part of oil pressure seat is provided with self-locking mechanism, self-locking mechanism is including L shape cylinder pipe, the piston slide bar, first fixed frame and slip post, the right side wall intercommunication of oil pressure seat has L shape cylinder pipe, the right part slip of L shape cylinder pipe is provided with the piston slide bar, the lower part of piston slide bar is provided with the sealing ring, the upper end rigid coupling of piston slide bar has first fixed frame, the left part upper end rigid coupling of first fixed frame has two slip posts, two first cylinder through-holes have been seted up to the latch segment of right part, two cylinder blind holes have been seted up to the left part lug of oil pressure seat, adjacent first cylinder through-hole and cylinder blind hole cooperation, be used for making the slip post stretch into first cylinder through-hole and cylinder blind hole in locking this device.

The invention has the beneficial effects that: the invention realizes the initial sealing of the device by matching the triangular convex ring and the triangular groove in the sealing mechanism, the second sealing ring is matched with the third sliding ring to realize the further sealing of the device, when the device is impacted by oil pressure, the second sliding ring moves downwards to push the second sealing ring, and simultaneously, the second sealing ring and the third sliding ring are still tightly matched under the action of the first spring to realize the multistage high sealing performance of the device, the special-shaped ring groove in the pressure relief mechanism is matched with the guide groove to ensure that the lower end of the rotating sleeve and the rectangular through hole are alternately opened, and simultaneously, the intermittent reciprocating motion of the L-shaped piston rod is matched to realize the pressure relief of the oil sealed at the upper part of the oil pressure seat.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the split structure of the present invention;

FIG. 3 is a partial cross-sectional view of the locking mechanism of the present invention;

FIG. 4 is a first partial cross-sectional view of the sealing mechanism of the present invention;

FIG. 5 is a second partial cross-sectional view of the sealing mechanism of the present invention;

FIG. 6 is a first partial cross-sectional view of the closure mechanism of the present invention;

FIG. 7 is a second partial cross-sectional view of the closure mechanism of the present invention;

FIG. 8 is a third partial cross-sectional view of the closure mechanism of the present invention;

FIG. 9 is a first partial cross-sectional view of the pressure relief mechanism of the present invention;

FIG. 10 is a second partial cross-sectional view of the pressure relief mechanism of the present invention;

FIG. 11 is a schematic view of a positioning assembly according to the present invention;

FIG. 12 is a partial cross-sectional view of the self-locking mechanism of the present invention;

in the figure: 1. an oil pressure seat, 2, a fixed cover, 201, a first rotating ring, 202, a locking block, 203, a first sealing ring, 204, a first straight gear, 205, a second rotating ring, 206, a pressure transmitter, 207, a slide rail, 208, an n-shaped fixed frame, 201a, a rectangular sliding groove, 3, a first ring groove, 301, a first sliding ring, 302, a second ring groove, 303, a first cylindrical hole, 304, a second sliding ring, 305, a second sealing ring, 306, a third sealing ring, 307, a second cylindrical hole, 308, a third sliding ring, 309, a fourth sliding ring, 310, a first spring, 311, a first sliding groove, 312, a sliding block, 313, a triangular convex ring, 314, a triangular groove, 4, a first fixed block, 401, a first fan-shaped through hole, 401a, a fourth sealing ring, 402, an arc-shaped sliding groove, 403, a first rotating block, 404, a first convex column, 405, a second fan-shaped through hole, 406, a rotating sleeve, 407, a second sliding groove, 408. a first sliding block, 408a, a fifth sealing ring, 409, a second sliding block, 410, a third rotating ring, 411, a second rotating block, 412, a third chute, 5, an L-shaped cylindrical tube, 501, a piston slide rod, 502, a fixing frame, 503, a sliding column, 504, a first cylindrical through hole, 505, a cylindrical blind hole, 6, a second spur gear, 601, a first fixing column, 602, a second cylindrical through hole, 603, a special-shaped ring groove, 604, a cylindrical shell, 605, an L-shaped piston rod, 606, a third convex column, 607, a guide groove, 608, a rectangular through hole, 609, a second fixing column, 610, a blind hole fixing column, 611, a first tension spring, 612, a frustum fixing block, 613, a third fixing column, 614, a fixing rod, 615, a second tension spring, 616, a third cylindrical through hole, 7, a second fixing block, 701, a fourth chute, 702, a third sliding block, 703, a second convex column, 704, a fourth sliding block, a third sliding groove, a piston rod, a, A fifth runner, 706, a second spring.

Detailed Description

Although the present invention may be described with respect to particular applications or industries, those skilled in the art will recognize the broader applicability of the invention. Those of ordinary skill in the art will recognize other factors such as: terms such as above, below, upward, downward, and the like are used to describe the accompanying drawings and are not meant to limit the scope of the invention, which is defined by the appended claims. Such as: any numerical designation of first or second, and the like, is merely exemplary and is not intended to limit the scope of the invention in any way.

Example 1

An instrument oil pressure seat capable of preventing oil leakage for an oil field is disclosed, as shown in figures 1 and 6, and comprises an oil pressure seat 1, a locking mechanism, a sealing mechanism, a closing mechanism and a pressure relief mechanism, wherein the locking mechanism is arranged above the oil pressure seat 1 and is used for fixing the device so as to facilitate the installation of an operator, the sealing mechanism is arranged on the locking mechanism and is used for increasing the sealing property between the locking mechanism and the oil pressure seat 1 so as to prevent the device from being impacted by the oil pressure and loosening between the locking mechanism and the oil pressure seat 1 to cause the waste of the oil leakage and pollute the environment, the closing mechanism is arranged in the oil pressure seat 1 and is used for communicating and closing the oil pressure seat 1 and an oil transportation pipeline, the pressure relief mechanism is arranged on the closing mechanism and is used for discharging and relieving the oil in the oil pressure seat 1 so as to prevent the operator from disassembling the locking mechanism, the high-pressure petroleum is sprayed out from the oil pressure seat 1 to injure operators by mistake and cause environmental pollution and energy waste.

When the petroleum transportation pipeline is installed, an operator firstly flange-connects the petroleum transportation pipeline with the hydraulic seat 1, then the operator places the locking mechanism on the upper end of the petroleum transportation pipeline, and simultaneously presses the locking mechanism downwards and rotates the locking mechanism, because the closing mechanism and the pressure relief mechanism are in an initial state, the closing mechanism and the pressure relief mechanism rotate together along with the rotation of the locking mechanism, at the moment, the closing mechanism rotates to be opened, so that the petroleum in the petroleum transportation pipeline enters the upper part of the petroleum transportation pipeline through the closing mechanism, because the closing mechanism and the pressure relief mechanism rotate together, at the moment, the pressure relief mechanism can not work, and along with the completion of the rotation of the locking mechanism, the locking mechanism extrudes the sealing mechanism, the extrusion of the sealing mechanism increases the sealing performance between the locking mechanism and the hydraulic seat 1, and simultaneously, after the petroleum completely enters the upper part of the petroleum transportation pipeline, the petroleum extrudes the sealing mechanism, the sealing property between the lock mechanism and the oil pressure seat 1 is further increased.

When the parts in the locking mechanism need to be replaced, an operator closes the closing mechanism by rotating the locking mechanism, so that the upper part of the oil pressure seat 1 is separated from the inside of the petroleum transportation pipeline, then the pressure relief mechanism rotates the pressure relief mechanism, the pressure in the upper part of the oil pressure seat 1 is adjusted to be initial pressure along with the work of the pressure relief mechanism, the locking mechanism is rotated again along with the operator, the locking mechanism is taken down from the upper end of the oil pressure seat 1, the parts in the locking mechanism are updated, and finally the operator can repeat the above operation and install the locking mechanism on the oil pressure seat 1 again.

Example 2

On the basis of embodiment 1, as shown in fig. 1 to 3, the locking mechanism includes a fixed cover 2, a first rotating ring 201, locking blocks 202, a first sealing ring 203, a first straight gear 204, a second rotating ring 205, a pressure transmitter 206, a sliding rail 207 and an n-shaped fixed mount 208, the inner side wall of the upper end of the oil pressure seat 1 is provided with a convex block, the outer side wall of the upper end of the oil pressure seat 1 is uniformly provided with three convex blocks, the upper end of the oil pressure seat 1 is slidably provided with the fixed cover 2, the right side wall of the lower portion of the fixed cover 2 is provided with a rectangular sliding chute 201a, the convex block of the oil pressure seat 1 is positioned in the rectangular sliding chute 201a for positioning the apparatus, the outer side wall of the fixed cover 2 is rotatably provided with the first rotating ring 201, the lower end of the first rotating ring 201 is uniformly and fixedly connected with the three locking blocks 202, the lower end of the fixed cover 2 is fixedly connected with the first sealing ring 203, the inner side wall of the first sealing ring 203 is arranged as an inclined plane, the inclined plane of first sealing ring 203 is used for increasing the area of contact with oil, make oil fill oil pressure seat 1, receive the oil pressure effect, first sealing ring 203 and the inner wall in close contact with of oil pressure seat 1, less oil gets into between fixed lid 2 and the oil pressure seat, the inside of fixed lid 2 rotates and is provided with first straight gear 204, the inside of first straight gear 204 rotates and is provided with second rotating ring 205, the middle part of second rotating ring 205 is fixed with pressure transmitter 206, the lower part of pressure transmitter 206 is seted up flutedly, the even rigid coupling in first rotating ring 201 upper end has three slide rail 207, the one end rigid coupling of three n-shaped mount 208 is in the upper end of second rotating ring 205, the other end of three n-shaped mount 208 slides on three slide rail 207 respectively, three n-shaped mount 208 circumference evenly distributed.

As shown in fig. 4, 5 and 6, the sealing mechanism includes a first slip ring 301, a second slip ring 304, a second sealing ring 305, a third sealing ring 306, a third slip ring 308, a fourth slip ring 309, a first spring 310, a slider 312 and a triangular convex ring 313, the lower end of the fixed cover 2 is provided with a first ring groove 3, the first ring groove 3 is provided with the first slip ring 301 in a sliding manner, the lower end of the fixed cover 2 is provided with the second ring groove 302, the second ring groove 302 is located at the outer ring of the first ring groove 3, the middle part of the fixed cover 2 is provided with six first cylindrical holes 303, the six first cylindrical holes 303 are uniformly distributed, each first cylindrical hole 303 is respectively communicated with the first ring groove 3 and the second ring groove 302, the second ring groove 302 is provided with the second slip ring 304 and the second sealing ring 305 in a sliding manner, the second sealing ring 305 is located below the second slip ring 304, the inner side wall of the fixed cover 2 is provided with a groove, the third sealing ring 306 is arranged in the groove of the fixed cover 2, the upper end surface and the lower end surface of the third sealing ring 306 are arranged in an inclined surface manner and are used for increasing the sealing performance between the third sealing ring 306 and the fixed cover 2 as well as between the fixed cover 2 and the first straight gear 204, a plurality of second cylindrical holes 307 are arranged in the fixed cover 2, each second cylindrical hole 307 is respectively communicated with the groove of the fixed cover 2 and the first ring groove 3, the fixed cover 2, the third sealing ring 306, the second cylindrical holes 307, the first ring groove 3, the first sliding ring 301, the first cylindrical hole 303, the second ring groove 302 and the second sliding ring 304 form a cavity, the cavity is filled with hydraulic oil, the upper end of the oil pressure base 1 is provided with a third sliding ring 308 in a sliding manner, a fourth sliding ring 309 is arranged in the third sliding ring 308 in a sliding manner, a plurality of first springs 310 are fixedly connected between the third sliding ring 308 and the fourth sliding ring 309, the lower ends of three convex blocks of the oil pressure base 1 are provided with first sliding grooves 311, and each first sliding block 312 is arranged in each first sliding groove 311 in a sliding manner, the upper parts of the three sliding blocks 312 penetrate through the oil pressure seat 1, the upper ends of the three sliding blocks 312 are fixedly connected with the fourth sliding ring 309, the lower ends of the sliding blocks 312 are arranged in an inclined plane for facilitating the rotation of the locking block 202 and are positioned below the convex block of the oil pressure seat 1, along with the fixation of the device, the sliding blocks 312 are extruded to drive the fourth sliding ring 309 to move upwards to compress the first spring 310, under the action of the first spring 310, the third sliding ring 308 is tightly contacted with the second sealing ring 305, meanwhile, when the oil pressure seat 1 is filled with oil, under the action of the oil pressure, the second sliding ring 304 extrudes the second sealing ring 305 downwards, the sealing performance between the third sliding ring 308 and the second sealing ring 305 is further increased, the oil is prevented from leaking from the device, the upper end of the oil pressure seat 1 is fixedly connected with a triangular convex ring 313, the lower end of the fixed cover 2 is provided with a triangular groove 314, the triangular groove 314 is positioned between the first annular groove 3 and the second annular groove 302, the triangular convex ring 313 and the triangular groove 314 are matched to realize the primary sealing of the device.

As shown in fig. 6-8, the closing mechanism includes a first fixed block 4, a fourth sealing ring 401a, a first rotating block 403, a first protruding column 404, a rotating sleeve 406, a first sliding block 408, a fifth sealing ring 408a, a second sliding block 409, a third rotating ring 410 and a second rotating block 411, the first fixed block 4 is fixedly connected to the middle portion of the inner side wall of the oil pressure seat 1, three first fan-shaped through holes 401 are uniformly formed on the first fixed block 4, the fourth sealing ring 401a is fixedly connected to the lower portion of each first fan-shaped through hole 401, the inner side wall of the fourth sealing ring 401a is arranged as an inclined plane to increase the sealing performance between the fourth sealing ring 401a and the first rotating block, three arc-shaped sliding grooves 402 are uniformly formed at the upper end of the first fixed block 4, the first rotating block 403 is rotatably disposed in the first fixed block 4, the three first protruding columns 404 are uniformly fixedly connected to the upper end of the first rotating block 403, the three first convex columns 404 are respectively positioned in the three arc-shaped sliding chutes 402, the arc-shaped sliding chutes 402 are used for limiting the rotation angle between the first rotating blocks 403, the first rotating blocks 403 are uniformly provided with three second fan-shaped through holes 405, the first fan-shaped through holes 401 and the second fan-shaped through holes 405 are staggered, the rotation of the first rotating blocks 403 enables the first fan-shaped through holes 401 and the second fan-shaped through holes 405 to be communicated or staggered, so that the oil pressure seat 1 is closed and communicated, an operator can conveniently replace the pressure transmitter 206 in the normal transportation process of oil, the middle part of the first rotating blocks 403 is fixedly connected with a rotating sleeve 406, the rotating sleeve 406 penetrates through the first fixing block 4 and is rotatably arranged with the first fixing block, the inner side wall of the upper part of the rotating sleeve 406 is uniformly provided with three second sliding chutes 407, the three second sliding chutes 407 are slidably provided with first sliding blocks 408, the lower end of the first sliding block 408 is fixedly connected with a fifth sealing ring 408a, the inner side wall of the lower end of the fifth sealing ring 408a is arranged as an inclined plane, and is acted by oil pressure, so that the fifth sealing ring 408a is in close contact with the rotating sleeve 406, the upper end of the first sliding block 408 is fixedly connected with a second sliding block 409, the upper end of the rotating sleeve 406 is rotatably provided with a third rotating ring 410, the third rotating ring 410 is rotatably arranged with the outer side wall of the oil pressure seat 1, the upper end of the third rotating ring 410 is rotatably provided with a second rotating block 411, a third sliding groove 412 is formed in the lower part of the second rotating block 411, and the upper end of the second sliding block 409 is positioned in the third sliding groove 412 and slides.

As shown in fig. 6-10, the pressure relief mechanism includes a second spur gear 6, a first fixing column 601, a cylindrical shell 604, an L-shaped piston rod 605, a third protruding column 606, a second fixing column 609, a blind hole fixing column 610, a first tension spring 611, a frustum fixing block 612, a fixing assembly and a positioning assembly, the upper end of the right portion of the fixing cover 2 is rotatably provided with the second spur gear 6, the upper end of the second spur gear 6 is rotatably provided with a handle, the second spur gear 6 is engaged with the first spur gear 204, the fixing assembly is arranged above the second spur gear 6, the lower end of the first spur gear 204 is uniformly and fixedly connected with three first fixing columns 601, the third rotating ring 410 is uniformly provided with three second cylindrical through holes 602, the upper end of each second cylindrical through hole 602 is provided with a chamfer 601, the lower portion of the first fixing column passes through the second cylindrical through hole 602, the lower end of the third rotating ring 410 is provided with three sets of positioning assemblies, the three groups of positioning components are respectively positioned below three second cylindrical through holes 602, the lower end face of the third rotating ring 410 is provided with a special-shaped annular groove 603, the side wall of the middle part of the rotating sleeve 406 is uniformly and fixedly connected with three cylindrical shells 604, the side wall of the middle part of the rotating sleeve 406 is uniformly and fixedly provided with three through holes, the three through holes of the rotating sleeve 406 are respectively opposite to the middle parts of the three cylindrical shells 604, the middle part of each cylindrical shell 604 is provided with an L-shaped piston rod 605 in a sliding manner, the upper ends of the three L-shaped piston rods 605 are positioned in the special-shaped annular groove 603, the side wall of the third rotating ring 410 is uniformly and fixedly connected with three third convex columns 606, the side wall of the second sliding block 409 is provided with a guide groove 607, the three third convex columns 606 are all positioned in the guide groove 607, the side wall of the upper part of the rotating sleeve 406 is uniformly provided with three rectangular through holes 608, the lower end of the first sliding block 408 is fixedly connected with a second fixed column 609, and the lower part of the second fixed column 609 is provided with a blind hole 610 in a sliding manner, a first tension spring 611 is fixedly connected between the second fixing column 609 and the blind hole fixing column 610, a frustum fixing block 612 is fixedly connected to the lower end of the blind hole fixing column 610, the inner side wall of the lower end of the rotating sleeve 406 is arranged in an inclined plane, the inclined plane of the rotating sleeve 406 is matched with the frustum fixing block 612, the arc section closest to the center of the third rotating ring 410 and the arc section farthest from the special-shaped ring groove 603 are both circular arcs, and the other parts are connected through smooth arcs to form a closed special-shaped ring groove 603 for enabling the L-shaped piston rod 605 to perform intermittent reciprocating motion, and the guide groove 607 is matched with the special-shaped ring groove 603 for enabling oil in the oil pressure seat 1 to be discharged.

As shown in fig. 4 and 6, the fixing component includes a third fixing column 613, a fixing rod 614 and a second tension spring 615, the third fixing column 613 is slidably disposed in each of the two n-shaped fixing frames 208 on the right, the fixing rod 614 is fixedly connected to the upper end of the third fixing column 613, the second tension spring 615 is fixedly connected between the fixing rod 614 and each of the two n-shaped fixing frames 208, the two second tension springs 615 are respectively sleeved on the adjacent third fixing columns 613, two third cylindrical through holes 616 are disposed on the first straight gear 204, the lower portions of the two third fixing columns 613 are respectively located in the two third cylindrical through holes 616, and the fixing component is configured to enable the closing mechanism and the pressure relief mechanism to rotate together, so as to prevent the pressure relief mechanism from rotating due to the operation of the closing mechanism and affecting the subsequent normal operation of the pressure relief mechanism.

As shown in fig. 9 and 11, the positioning assembly includes a second fixed block 7, a third sliding block 702, a second protruding column 703, a fourth sliding block 704 and a second spring 706, the lower end of the left portion of the third rotating ring 410 is fixedly connected with the second fixed block 7, the left side wall of the second fixed block 7 is provided with a fourth sliding slot 701, the fourth sliding slot 701 is provided with the third sliding block 702 in a sliding manner, the third sliding block 702 is located right below the second cylindrical through hole 602, the front and rear sides of the left portion of the third sliding block 702 are fixedly connected with the second protruding column 703, the inside of the second fixed block 7 is provided with the fourth sliding block 704 in a sliding manner, the right side of the fourth sliding block 704 is in a rough arc shape, the left portion of the fourth sliding block 704 is provided with two fifth sliding slots, the fifth sliding slots are obliquely arranged, so that the third sliding block 705 slides downwards to push the fourth sliding block 704 to slide leftwards, the two second protruding columns 703 are respectively located in the two fifth sliding slots 705, a second spring 706 is fixedly connected between the second fixed block 7 and the fourth sliding block 704, under the action of the second spring 706, the fourth sliding block 704 is fixed in close contact with the rotating sleeve 406, so that when the device is installed, the first fixed column 601 extends into the second cylindrical through hole 602, and the pressure transmitter 206 is matched with the second rotating block 411.

After an operator connects the oil pressure seat 1 to the oil transportation pipeline, the operator holds the whole of the fixed cover 2 and places the whole of the fixed cover 2 onto the oil pressure seat 1, when placing, the rectangular sliding groove 201a is opposite to the convex block on the inner side wall of the oil pressure seat 1, the locking mechanism is placed at the upper end of the oil pressure seat 1, the triangular convex ring 313 enters the triangular groove 314 to increase the sealing performance between the fixed cover 2 and the oil pressure seat 1, at the moment, under the action of the second spring 706, the fourth sliding block 704 extrudes the rotating sleeve 406 inwards, the third rotating ring 410 and the second rotating block 411 keep the initial state, along with the downward movement of the locking mechanism, the lower part of the first fixed column 601 enters the second cylindrical through hole 602, the first fixed column 601 extrudes the third sliding block 702 to move downwards, along with the downward movement of the third sliding block 702, under the action of the fifth sliding groove 705, the fourth sliding block 704 slides outwards to compress the second spring 706, so that the fourth sliding block 704 releases the fixation on the rotating sleeve 406, while the locking mechanism moves down, the lower portion of the pressure transmitter 206 is engaged with the upper portion of the second rotating block 411.

Then the operator presses the locking mechanism downwards and rotates the three n-shaped fixing frames 208 clockwise, at this time, the lower portions of the third fixing columns 613 are located in the third cylindrical through holes 616, and the n-shaped fixing frames 208 are located at one end of the sliding rail 207, then as the three n-shaped fixing frames 208 rotate clockwise, the n-shaped fixing frames 208 drive the second rotating ring 205 and the first straight gear 204 to rotate clockwise together, at the same time, the n-shaped fixing frames 208 drive the first rotating ring 201 to rotate clockwise through the sliding rail 207, while the second rotating ring 205 rotates clockwise to drive the pressure transmitter 206 to rotate clockwise, the pressure transmitter 206 rotates clockwise to drive the rotating sleeve 406 to rotate clockwise together with the parts thereon through the second rotating block 411, the second sliding block 409 and the first sliding block 408, and the rotating sleeve 406 rotates clockwise to drive the first rotating block 403 to rotate clockwise, so that the second fan-shaped through hole 405 is aligned with the first fan-shaped through hole 401, meanwhile, the first fixed column 601 is driven to rotate by the rotation of the first straight gear 204, and because the lower portion of the first fixed column 601 is located in the second cylindrical through hole 602, the third rotating ring 410 is driven to rotate clockwise by the rotation of the first fixed column 601 and rotate clockwise together with the parts on the third rotating ring 410, and the pressure relief mechanism does not work at this time because the rotating sleeve 406 and the third rotating ring 410 rotate clockwise together.

Meanwhile, the clockwise rotation of the first rotating ring 201 drives the locking block 202 to rotate clockwise, so that the locking block 202 is enabled to clamp the convex block on the outer side wall of the oil pressure seat 1, thereby realizing the rapid installation and fixation of the device, and as the locking block 202 rotates to clamp the convex block on the outer side wall of the oil pressure seat 1, the locking block 202 extrudes the sliding block 312 to move upwards, the sliding block 312 moves upwards to push the fourth sliding ring 309 to move upwards to compress the first spring 310, the third sliding ring 308 is enabled to cling to the second sealing ring 305 under the action of the elastic force of the first spring 310, then the sliding block is opened along with the clockwise rotation of the first rotating block 403, oil enters the upper part of the oil pressure seat 1 through the first fan-shaped through hole 401 and the second fan-shaped through hole 405, the oil pushes the fixed cover 2 to move upwards, the fixed cover 2 drives the locking block 202 to move upwards through the first rotating ring 201, so that the locking block 202 is in close contact with the convex block on the outer side wall of the oil pressure seat 1 and is acted by the pressure of the oil, the first sliding ring 301 of oil extrusion upwards moves, along with the extrusion hydraulic oil of first sliding ring 301 rebound, hydraulic oil extrudes third sealing ring 306 through second cylinder hole 307, make third sealing ring 306 hug closely first right-hand gear 204, the inclined plane setting of both ends about the third sealing ring 306 simultaneously, make third sealing ring 306 hug closely fixed cover 2, improve the leakproofness between third sealing ring 306 and first right-hand gear 204 and fixed cover 2, hydraulic oil gets into second sliding ring 304 of extrusion in the second ring groove 302 through first cylinder hole 303 simultaneously, second sliding ring 304 is extrudeed the second sealing ring 305 by the extrusion lapse, increase the leakproofness between second sealing ring 305 and the third sliding ring 308, pressure transmitter 206 measures the pressure of oil transportation pipeline afterwards.

When the pressure transmitter 206 is out of order and needs to be replaced, an operator holds the three n-shaped fixing frames 208 to rotate counterclockwise, because the lower portions of the third fixing columns 613 are still located in the third cylindrical through holes 616, then the n-shaped fixing frames 208 rotate counterclockwise along with the three n-shaped fixing frames 208, the n-shaped fixing frames 208 drive the second rotating ring 205 and the first straight gear 204 to rotate counterclockwise together, at this time, the n-shaped fixing frames 208 rotate counterclockwise, the outer ends of the n-shaped fixing frames 208 are located on the sliding rails 207 to rotate counterclockwise, the second rotating ring 205 and the first straight gear 204 rotate counterclockwise to perform the above reverse operation, finally, the first rotating block 403 rotates counterclockwise, the second fan-shaped through holes 405 and the first fan-shaped through holes 401 are staggered to be closed, at this time, under the action of oil pressure in the oil transportation pipeline, the oil presses the fourth sealing ring 401a, and the sealing performance between the first fixing block 4 and the first rotating block 403 is increased, at this time, the oil on the upper part of the oil pressure seat 1 is still in a large pressure state.

Then, the operator holds the fixing rod 614 to lift upward, so that the lower portion of the third fixing column 613 is separated from the third cylindrical through hole 616, and at the same time, the operator holds the handle of the second spur gear 6 to rotate, so that the second spur gear 6 rotates counterclockwise, and the second spur gear 6 drives the first spur gear 204 to rotate clockwise, at this time, the n-shaped fixing frame 208 slides to the other end of the sliding rail 207, the first spur gear 204 rotates clockwise, so that the pressure transmitter 206 cannot rotate clockwise, the first spur gear 204 rotates clockwise, the first fixing column 601 drives the third rotating ring 410 to rotate clockwise, as the third rotating ring 410 rotates clockwise, the third rotating ring 410 drives the third protruding column 606 to rotate clockwise, under the action of the guide groove 607, the third protruding column 606 rotates clockwise, so that the second sliding block 409 moves downward, and under the action of the special-shaped annular groove 603, the L-shaped piston rod 605 does not move, the second sliding block 409 moves downwards to drive the first sliding block 408 and the fifth sealing ring 408a to move downwards, so that the first sliding block 408 shields the three rectangular through holes 608, when the first sliding block 408 shields the rectangular through holes 608, the first sliding block 408 continuously moves downwards, the second fixing column 609 is driven by the first sliding block 408 to move downwards, the first tension spring 611 contracts partially, the tension of the second fixing column 609 on the blind hole fixing column 610 and the frustum fixing block 612 is reduced, the third rotating ring 410 continuously rotates clockwise to not drive the second sliding block 409 to move, but the L-shaped piston rod 605 moves inwards under the action of the special-shaped ring groove 603, and the L-shaped piston rod 605 moves inwards to push the oil in the rotating sleeve 406 to push the frustum fixing block 612 to move downwards to open, so that the oil enters the oil transportation pipeline.

Then, the third rotating ring 410 continues to rotate the L-shaped piston rod 605 clockwise, but as the third rotating ring 410 drives the third protruding column 606 to rotate clockwise, the second sliding block 409 moves upward under the action of the guide groove 607, and as the second sliding block 409 moves upward, the second sliding block 409 moves upward to drive the first sliding block 408 and the second fixing column 609 to move upward, so that the first tension spring 611 stretches, then the frustum fixing block 612 and the blind hole fixing column 610 move upward under the action of the first tension spring 611, so that the frustum fixing block 612 is in close contact with the rotating sleeve 406 to achieve sealing again, and then the second sliding block 409 continues to move upward to drive the first sliding block 408 and the fifth sealing ring 408a to move upward, so that the first sliding block 408 is separated from the rectangular through hole 608.

Then, the third rotating ring 410 continues to rotate clockwise, at which time the second sliding block 409 does not move, the third rotating ring 410 continues to rotate clockwise, the L-shaped piston rod 605 moves outwards under the action of the special-shaped ring groove 603, so that the oil enters the rotating sleeve 406, then the operations are repeated to discharge the petroleum in the upper part of the oil pressure seat 1, reduce the pressure in the upper part of the oil pressure seat 1, avoid the petroleum ejection error of the operator in the oil pressure seat 1 after the fixed cover 2 is disassembled, meanwhile, the environment is polluted, when the pressure in the oil pressure recovery device is recovered to the initial state, the operator holds the first rotating ring 201 to rotate anticlockwise, so that the locking block 202 releases the limitation on the convex block on the outer side wall of the oil pressure seat 1, then the operator takes down the fixed cover 2 and the parts fixedly connected with the fixed cover together, the pressure transmitter 206 is replaced and then mounted on the oil pressure base 1 again by repeating the above operation.

Example 3

On the basis of embodiment 2, as shown in fig. 6 and 12, the hydraulic pressure seat further comprises a self-locking mechanism, the right portion of the hydraulic pressure seat 1 is provided with the self-locking mechanism, the self-locking mechanism comprises an L-shaped cylindrical tube 5, a piston slide rod 501, a first fixing frame 502 and a slide column 503, the right side wall of the hydraulic pressure seat 1 is communicated with the L-shaped cylindrical tube 5, the right portion of the L-shaped cylindrical tube 5 is slidably provided with the piston slide rod 501, the lower portion of the piston slide rod 501 is provided with a sealing ring, the upper end of the piston slide rod 501 is fixedly connected with the first fixing frame 502, the upper end of the left portion of the first fixing frame 502 is fixedly connected with the two slide columns 503, the locking block 202 of the right portion is provided with two first cylindrical through holes 504, the left portion of the hydraulic pressure seat 1 is provided with two cylindrical blind holes 505, the adjacent first cylindrical through holes 504 are matched with the cylindrical blind holes 505, so that the slide columns 503 extend into the first cylindrical through holes 504 and the cylindrical blind holes 505 to lock the hydraulic pressure seat, avoid the oil pressure in the upper portion of oil pressure seat 1 to put in place for the pressure release and make, operating personnel rotates first rotating ring 201 by force and opens this device, leads to oil to leak the polluted environment.

Along with the oil entering the upper part of the oil pressure seat 1, the oil is gradually filled in the oil pressure seat 1, the oil enters the L-shaped cylindrical pipe 5 to squeeze the piston slide rod 501 to move upwards, the piston slide rod 501 drives the slide column 503 to move upwards through the first fixing frame 502, the slide column 503 is inserted upwards into the first cylindrical through hole 504 and the cylindrical blind hole 505, the fixing between the locking block 202 and the oil pressure seat 1 is completed, when the oil pressure seat 1 has large pressure inside, an operator cannot directly rotate the first rotating ring 201, the locking mechanism is taken down from the oil pressure seat 1, the operation is repeated, the oil in the upper part of the oil pressure seat 1 is discharged, the pressure in the upper part of the oil pressure seat 1 is recovered to the initial state, at the moment, the piston slide rod 501 acts to recover the downward movement to the initial state under the pressure, the slide column 503 is withdrawn from the first cylindrical through hole 504 and the cylindrical blind hole 505, and then the operator holds the three n-shaped fixing frames 208 to continue to rotate anticlockwise, with the counterclockwise rotation of the n-shaped fixing frame 208, the n-shaped fixing frame 208 drives the locking block 202 to rotate counterclockwise through the first rotating ring 201, so that the locking block 202 releases the limitation on the convex block on the outer side wall of the oil pressure seat 1, and then an operator takes down the fixing cover 2 together with the parts fixedly connected with the fixing cover and performs subsequent operations.

It should be understood that this example is only for illustrating the present invention and is not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides an oil field is with instrument oil pressure seat that can prevent oil and reveal, characterized by, including oil pressure seat (1), locking mechanical system, sealing mechanism, closing mechanism and pressure relief mechanism, the top of oil pressure seat (1) is equipped with and is provided with locking mechanical system, locking mechanical system is used for making this device fix, the last sealing mechanism that is provided with of locking mechanical system, sealing mechanism is used for increasing the leakproofness between locking mechanical system and oil pressure seat (1), be provided with closing mechanism in oil pressure seat (1), closing mechanism is used for making oil pressure seat (1) and oil transportation pipeline intercommunication and closure, the last pressure relief mechanism that is provided with of closing mechanism, pressure relief mechanism is used for discharging the pressure release to the oil in oil pressure seat (1).

2. The oil field instrument oil pressure seat capable of preventing oil leakage according to claim 1, wherein the locking mechanism comprises a fixed cover (2), a first rotating ring (201), a locking block (202), a first sealing ring (203), a first straight gear (204), a second rotating ring (205), a pressure transmitter (206), a sliding rail (207) and an n-shaped fixing frame (208), the inner side wall of the upper end of the oil pressure seat (1) is provided with a convex block, the outer side wall of the upper end of the oil pressure seat (1) is uniformly provided with three convex blocks, the upper end of the oil pressure seat (1) is provided with the fixed cover (2) in a sliding manner, the right side wall of the lower part of the fixed cover (2) is provided with a rectangular sliding groove (201 a), the convex block of the oil pressure seat (1) is positioned in the rectangular sliding groove (201 a) and used for positioning the device, the outer side wall of the fixed cover (2) is provided with the first rotating ring (201) in a rotating manner, the lower end of the first rotating ring (201) is uniformly and fixedly connected with three locking blocks (202), the lower end of the fixed cover (2) is fixedly connected with a first sealing ring (203), the inner side wall of the first sealing ring (203) is arranged in an inclined plane, the inclined plane of the first sealing ring (203) is used for increasing the contact area with petroleum, a first straight gear (204) is rotatably arranged in the fixed cover (2), a second rotating ring (205) is rotatably arranged in the first straight gear (204), the middle part of the second rotating ring (205) is fixedly provided with a pressure transmitter (206), the lower part of the pressure transmitter (206) is provided with a groove, the upper end of the first rotating ring (201) is uniformly and fixedly connected with three sliding rails (207), one ends of three n-shaped fixing frames (208) are fixedly connected with the upper end of the second rotating ring (205), and the other ends of the three n-shaped fixing frames (208) respectively slide on the three sliding rails (207), three n-shaped fixing frames (208) are uniformly distributed in the circumferential direction.

3. The instrument oil pressure seat capable of preventing oil leakage for the oil field according to claim 2, wherein the sealing mechanism comprises a first sliding ring (301), a second sliding ring (304), a second sealing ring (305), a third sealing ring (306), a third sliding ring (308), a fourth sliding ring (309), a first spring (310), a sliding block (312) and a triangular convex ring (313), a first ring groove (3) is formed at the lower end of the fixed cover (2), the first sliding ring (301) is arranged in the first ring groove (3) in a sliding manner, a second ring groove (302) is formed at the lower end of the fixed cover (2), the second ring groove (302) is positioned at the outer ring of the first ring groove (3), six first cylindrical holes (303) are formed in the middle of the fixed cover (2), the six first cylindrical holes (303) are uniformly distributed in the circumferential direction, each first cylindrical hole (303) is respectively communicated with the first ring groove (3) and the second ring groove (302), a second slip ring (304) and a second sealing ring (305) are arranged in the second ring groove (302) in a sliding manner, the second sealing ring (305) is positioned below the second slip ring (304), a groove is formed in the inner side wall of the fixed cover (2), a third sealing ring (306) is arranged in the groove of the fixed cover (2), a plurality of second cylindrical holes (307) are formed in the fixed cover (2), each second cylindrical hole (307) is respectively communicated with the groove of the fixed cover (2) and the first ring groove (3), the fixed cover (2), the third sealing ring (306), the second cylindrical holes (307), the first ring groove (3), the first slip ring (301), the first cylindrical holes (303), the second ring groove (302) and the second slip ring (304) form a cavity, the cavity is filled with hydraulic oil, a third slip ring (308) is arranged at the upper end of the oil pressure base (1) in a sliding manner, and a fourth slip ring (309) is arranged in the third slip ring (308) in a sliding manner, the rigid coupling has a plurality of first spring (310) between third sliding ring (308) and fourth sliding ring (309), first spout (311) have been seted up to the three lug lower extreme of oil pressure seat (1), it is provided with slider (312) all to slide in every first spout (311), oil pressure seat (1) has all been worn to the upper portion of three slider (312), and the upper end of three slider (312) all with fourth sliding ring (309) rigid coupling, the lower extreme of slider (312) is the inclined plane setting, be used for making things convenient for latch segment (202) to rotate the lug below that is located oil pressure seat (1), the upper end rigid coupling of oil pressure seat (1) has triangle-shaped bulge loop (313), triangle-shaped recess (314) have been seted up to the lower extreme of fixed cover (2), triangle-shaped recess (314) are located between first annular (3) and second annular (302).

4. The instrument oil pressure seat capable of preventing oil leakage for the oil field as claimed in claim 3, wherein the upper and lower end faces of the third seal ring (306) are provided with inclined surfaces for increasing the sealing performance between the third seal ring (306) and the fixed cover (2) and the first spur gear (204).

5. The oil field instrument oil pressure seat capable of preventing oil leakage according to claim 3, wherein the closing mechanism comprises a first fixed block (4), a fourth sealing ring (401 a), a first rotating block (403), a first convex column (404), a rotating sleeve (406), a first sliding block (408), a fifth sealing ring (408 a), a second sliding block (409), a third rotating ring (410) and a second rotating block (411), the middle part of the inner side wall of the oil pressure seat (1) is fixedly connected with the first fixed block (4), three first fan-shaped through holes (401) are uniformly formed in the first fixed block (4), the lower part of each first fan-shaped through hole (401) is fixedly connected with the fourth sealing ring (401 a), the inner side wall of the fourth sealing ring (401 a) is arranged in an inclined plane to increase the sealing performance between the fourth sealing ring (401 a) and the first rotating block (403), the upper end of a first fixed block (4) is uniformly provided with three arc-shaped sliding chutes (402), the first fixed block (4) is rotatably provided with a first rotating block (403), the upper end of the first rotating block (403) is uniformly and fixedly connected with three first convex columns (404), the three first convex columns (404) are respectively positioned in the three arc-shaped sliding chutes (402), the first rotating block (403) is uniformly provided with three second fan-shaped through holes (405), the first fan-shaped through holes (401) and the second fan-shaped through holes (405) are staggered, the middle part of the first rotating block (403) is fixedly connected with a rotating sleeve (406), the rotating sleeve (406) penetrates through the first fixed block (4) and is rotatably arranged with the first fixed block, the inner side wall of the upper part of the rotating sleeve (406) is uniformly provided with three second sliding chutes (407), the three second sliding chutes (407) are internally provided with first sliding blocks (408), the lower end of the first sliding block (408) is fixedly connected with a fifth sealing ring (408 a), the upper end of the first sliding block (408) is fixedly connected with a second sliding block (409), the upper end of the rotating sleeve (406) is rotatably provided with a third rotating ring (410), the third rotating ring (410) is rotatably arranged with the outer side wall of the oil pressure seat (1), the upper end of the third rotating ring (410) is rotatably provided with a second rotating block (411), a third sliding groove (412) is formed in the lower portion of the second rotating block (411), and the upper end of the second sliding block (409) is located in the third sliding groove (412) to slide.

6. The instrument oil pressure seat capable of preventing oil leakage for the oil field as claimed in claim 5, wherein the pressure relief mechanism comprises a second spur gear (6), a first fixing column (601), a cylindrical shell (604), an L-shaped piston rod (605), a third protruding column (606), a second fixing column (609), a blind hole fixing column (610), a first tension spring (611), a frustum fixing block (612), a fixing component and a positioning component, the upper end of the right part of the fixing cover (2) is rotatably provided with the second spur gear (6), the eccentric position of the upper end of the second spur gear (6) is rotatably provided with a handle, the second spur gear (6) is meshed with the first spur gear (204), the fixing component is arranged above the second spur gear (6), the lower end of the first spur gear (204) is uniformly and fixedly connected with three first fixing columns (601), the third rotating ring (410) is uniformly provided with three second cylindrical through holes (602), the upper end of each second cylindrical through hole (602) is provided with a chamfer, the lower part of each first fixing column (601) penetrates through the second cylindrical through hole (602), the lower end of each third rotating ring (410) is provided with three groups of positioning assemblies, the three groups of positioning assemblies are respectively positioned below the three second cylindrical through holes (602), the lower end face of each third rotating ring (410) is provided with a special-shaped ring groove (603), the middle side wall of each rotating sleeve (406) is uniformly and fixedly connected with three cylindrical shells (604), the middle side wall of each rotating sleeve (406) is uniformly provided with three through holes, the three through holes of each rotating sleeve (406) are respectively and oppositely aligned to the middle parts of the three cylindrical shells (604), the middle part of each cylindrical shell (604) is provided with an L-shaped piston rod (605) in a sliding manner, the upper ends of the three L-shaped piston rods (605) are all positioned in the special-shaped ring grooves (603), and the side wall of each third rotating ring (410) is uniformly and fixedly connected with three third convex columns (606), guide way (607) have been seted up on the lateral wall of second sliding block (409), three third projection (606) all are located guide way (607), three rectangle through-hole (608) have evenly been seted up to the upper portion lateral wall that rotates cover (406), the lower extreme rigid coupling of first sliding block (408) has second fixed column (609), the lower part slip of second fixed column (609) is provided with blind hole fixed column (610), the rigid coupling has first extension spring (611) between second fixed column (609) and blind hole fixed column (610), the lower extreme rigid coupling of blind hole fixed column (610) has frustum fixed block (612), it sets up for the inclined plane to rotate cover (406) lower extreme inside wall, the inclined plane and the cooperation of frustum fixed block (612) that rotate cover (406).

7. The oil field instrument oil pressure seat capable of preventing oil leakage according to claim 6, wherein the arc section of the special-shaped ring groove (603) closest to the center of the third rotating ring (410) and the arc section of the special-shaped ring groove farthest from the center are circular arcs, the other parts are connected through smooth arcs to form a closed special-shaped ring groove (603) for enabling the L-shaped piston rod (605) to perform intermittent reciprocating motion, and the guide groove (607) is matched with the special-shaped ring groove (603) for enabling oil in the oil pressure seat (1) to be discharged.

8. The oil field instrument oil pressure seat capable of preventing oil leakage according to claim 6, wherein the fixing assembly comprises a third fixing column (613), a fixing rod (614) and a second tension spring (615), the third fixing column (613) is slidably arranged in each of the two n-shaped fixing frames (208) on the right side, the fixing rod (614) is fixedly connected to the upper end of the third fixing column (613), the second tension spring (615) is fixedly connected between the fixing rod (614) and the two n-shaped fixing frames (208), the two second tension springs (615) are respectively sleeved on the adjacent third fixing columns (613), two third cylindrical through holes (616) are formed in the first straight gear (204), the lower portions of the two third fixing columns (613) are respectively located in the two third cylindrical through holes (616), and the fixing assembly is used for enabling the closing mechanism and the pressure relief mechanism to rotate together.

9. The oil field instrument oil pressure seat capable of preventing oil leakage according to claim 6, wherein the positioning assembly comprises a second fixed block (7), a third sliding block (702), a second convex column (703), a fourth sliding block (704) and a second spring (706), the lower end of the left part of the third rotating ring (410) is fixedly connected with the second fixed block (7), the left side wall of the second fixed block (7) is provided with a fourth sliding groove (701), the fourth sliding groove (701) is internally provided with the third sliding block (702) in a sliding manner, the third sliding block (702) is positioned under the second cylindrical through hole (602), the front and back sides of the left part of the third sliding block (702) are fixedly connected with the second convex column (703), the inside of the second fixed block (7) is provided with the fourth sliding block (704) in a sliding manner, the right side surface of the fourth sliding block (704) is in a rough arc shape, the left part of the fourth sliding block (704) is provided with two fifth sliding grooves (705), the fifth sliding groove (705) is obliquely arranged, the two second convex columns (703) are respectively positioned in the two fifth sliding grooves (705), and a second spring (706) is fixedly connected between the second fixed block (7) and the fourth sliding block (704).

10. The oil field instrument oil pressure seat capable of preventing oil leakage for the oil field according to claim 1, characterized by further comprising a self-locking mechanism, the right part of the oil pressure seat (1) is provided with the self-locking mechanism, the self-locking mechanism comprises an L-shaped cylindrical tube (5), a piston slide rod (501), a first fixing frame (502) and a sliding column (503), the right side wall of the oil pressure seat (1) is communicated with the L-shaped cylindrical tube (5), the right part of the L-shaped cylindrical tube (5) is slidably provided with the piston slide rod (501), the lower part of the piston slide rod (501) is provided with a sealing ring, the upper end of the piston slide rod (501) is fixedly connected with the first fixing frame (502), the upper end of the left part of the first fixing frame (502) is fixedly connected with the two sliding columns (503), the locking block (202) of the right part is provided with the two first cylindrical through holes (504), the left part of the oil pressure seat (1) is provided with the two cylindrical blind holes (505), the adjacent first cylindrical through hole (504) and the cylindrical blind hole (505) are matched, so that the sliding column (503) extends into the first cylindrical through hole (504) and the cylindrical blind hole (505) to lock the device.