CN217783752U - Double-sealing type plunger box body assembly - Google Patents

Abstract

The utility model discloses a double-sealing plunger letter body component, which comprises a self-aligning plunger, an external letter body, a front self-adjusting sealing component, a rear manual built-in sealing component and a cone one-way oil injection valve group, wherein the external letter body is sleeved outside the self-aligning plunger, and the rear manual built-in sealing component is sleeved at one end of the self-aligning plunger and the internal side of the external letter body; through setting up the integral plunger box body seal assembly of bi-polar, can be manual and automatic two-way pretension seal assembly, the life of sealing reliability and vulnerable part has been improved greatly, carry out accurate lubrication to plunger and filler through setting up the one-way oiling valve group of toper, prevent that the too high medium of pressure from splashing, improve the plunger, the life of filler, through the design of the integral seal assembly of twin-unit, it is sealed accurate, vulnerable part life improves greatly, reduce maintenance frequency and cost of maintenance, improve equipment's availability factor and life.

Description

Double-sealing type plunger box body assembly

Technical Field

The utility model belongs to the technical field of the plunger letter body subassembly, concretely relates to double containment formula plunger letter body subassembly.

Background

The existing high-pressure reciprocating plunger pump is used as the main equipment for secondary and tertiary oil recovery in oil fields, is widely applied to various large oil fields, and is usually used for water injection or polymer injection to supplement the formation energy so as to improve the oil recovery rate. The plunger body component is a core component of a high-pressure plunger pump, no matter water injection or polymers and other media, the plunger body component is usually sealed by a packing ring, the compression degree of the packing is controlled by artificially adjusting the pretightening force, so that the leakage amount is controlled, the mode can meet the field use, but certain problems also exist, in the use process, the abrasion of the sealing packing is fast due to the difference of the media, pressure, flow and temperature and the comprehensive reasons such as coaxiality errors of processing, assembly and the like among related components, the leakage amount is large, frequent shutdown and replacement are caused, sometimes the leakage amount wins over, the power end is extruded, the engine oil is emulsified, the personal harm is caused, and the normal production of an oil field is influenced, so that the double-sealed plunger body component is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a double containment formula plunger letter body subassembly to in solving the above-mentioned background art in the use that proposes, because of the difference of medium, pressure, flow, temperature, comprehensive reasons such as axiality errors such as processing, assembly between the relevant subassembly cause the sealed filler wearing and tearing fast, the leakage quantity is great, frequently the machine halt is changed, leak the leakage quantity and win sometimes, crowd into the power end, cause the machine oil emulsification, what more does not cause personal harm, the problem of the normal production in oil field has been influenced.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a double containment formula plunger letter body subassembly, includes from aligning formula plunger, external big letter body, front end from debugging seal assembly, the manual built-in seal assembly of rear end and the one-way oiling valves of cone center, external big letter body cover is established and is installed from the outside of aligning formula plunger, just the manual built-in seal assembly suit of rear end is in from aligning formula plunger and the inboard one end of external big letter body, the front end is from debugging seal assembly suit and is in from the inboard other end of aligning formula plunger and external big letter body.

The external big letter body comprises a rear-end manual built-in sealing component mounting hole, an oiling valve group mounting taper hole and a front-end self-debugging sealing component mounting hole, the oiling valve group mounting taper hole is formed in the top of the external big letter body, the rear-end manual built-in sealing component mounting hole is formed in one end of the inner side of the external big letter body, the front-end self-debugging sealing component mounting hole is formed in the other end of the inner side of the external big letter body, the front-end self-debugging sealing component comprises a thread positioning sleeve, a spacer ring I, a filler I, a front-end guide sleeve, an adjusting spring and a front-end inner letter body, the thread positioning sleeve is arranged at one end of the front-end inner letter body, the front-end guide sleeve is arranged at the other end of the inner side of the front-end letter body, four fillers I and one spacer ring I are arranged between the thread positioning sleeve and the front-end guide sleeve, the spacer rings are symmetrically arranged among the four first fillers, the adjusting spring is arranged at the edge of the front end guide sleeve in a penetrating mode, one end, outside the front end self-debugging sealing assembly, of the front end self-debugging sealing assembly is sealed in an oblique angle mode, for better sealing use, the rear end manual built-in sealing assembly comprises an external thread box body, a rear end guide sleeve I, a spacer ring II, a filler II, a rear end guide sleeve II, a guide sealing groove and a pre-tightening thread, the guide sealing groove is formed in the surface of the external thread box body, the pre-tightening thread is formed in one end of the guide sealing groove and is located at one end of the outer surface of the external thread box body, the rear end guide sleeve I is arranged at one end of the inner side of the external thread box body, the rear end guide sleeve II is arranged at the other end of the inner side of the external thread box body, and the spacer ring II and the filler II are arranged between the rear end guide sleeve I and the rear end guide sleeve II, the one-way oiling valve of cone center group includes oil valve bonnet, oil disk seat, resistant oily rubber seal, one-way case and oil valve spring, the oil valve bonnet passes through the bolt with the oil valve bonnet and establishes fixedly soon, just one-way case installs the inboard of oil valve bonnet, the oil valve spring suit is in the bottom of one-way case, just resistant oily rubber seal pad is established on the binding face of oil disk seat and oil valve bonnet, simultaneously the inboard of oil disk seat is provided with the toper helicitic texture, the outside one end of the external big letter body is provided with conical surface structure, the one end of the external big letter body compresses tightly sealed cooperation through the cylinder conical surface.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) Through the design of external big letter body cylinder conical surface syntropy, guarantee that the convenient whole plunger seal assembly of axiality dismantles, through setting up the integral plunger letter body seal assembly of bi-polar, can manually and automatic two-way pretension seal assembly, the life of sealing reliability and vulnerable part has been improved greatly, carry out accurate lubrication to plunger and filler through setting up the one-way oiling valve group of toper, prevent that the too high medium of pressure from splashing, improve the plunger, the life of filler, through the design of the integral seal assembly of twin-unit, it is sealed accurate, vulnerable part life improves greatly, reduce maintenance frequency and cost of maintenance, improve equipment's availability factor and life.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the external letter of the present invention;

fig. 3 is a schematic structural view of the front-end self-debugging sealing assembly of the present invention;

fig. 4 is a schematic structural view of the rear manual built-in seal assembly of the present invention;

FIG. 5 is a schematic structural view of the conical center one-way oiling valve set of the present invention;

in the figure: 1. a self-aligning plunger; 2. an external big letter body; 3. the front end self-adjusting seal assembly; 4. the rear end is a manual built-in sealing component; 5. a cone center one-way oil injection valve group; 6. a rear-end manual built-in seal assembly mounting hole; 7. the oil injection valve group is provided with a taper hole; 8. the front end is self-adjusting to the sealing component mounting hole; 10. a thread positioning sleeve; 11. a first spacer ring; 12. filling one; 13. a front end guide sleeve; 14. adjusting the spring; 15. a front end inner body; 16. an external thread box body; 17. a first rear end guide sleeve; 18. a second spacer ring; 19. a second filler; 20. a second rear guide sleeve; 21. a guide sealing groove; 22. pre-tightening the threads; 23. an oil valve cover; 24. an oil valve seat; 25. an oil-resistant rubber seal ring; 26. a one-way valve core; 27. and an oil valve spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the present invention provides a technical solution: the utility model provides a double containment formula plunger letter body subassembly, including self-aligning plunger 1, external big letter body 2, front end self-debugging seal assembly 3, the manual built-in seal assembly 4 of rear end and the one-way oiling valves of cone center 5, external big letter body 2 cover is established and is installed in the outside from self-aligning plunger 1, and the manual built-in seal assembly 4 suit of rear end is in the inboard one end of self-aligning plunger 1 and external big letter body 2, front end self-debugging seal assembly 3 suit is at the inboard other end from self-aligning plunger 1 and external big letter body 2, this structural component mode of setting, when using, wearing parts life improves greatly, reduce maintenance frequency and cost, improve the availability factor and the life of equipment.

The external big letter body 2 comprises a rear-end manual built-in sealing assembly mounting hole 6, an oiling valve group mounting taper hole 7 and a front-end self-debugging sealing assembly mounting hole 8, the oiling valve group mounting taper hole 7 is formed in the top of the external big letter body 2, the rear-end manual built-in sealing assembly mounting hole 6 is formed in one end of the inner side of the external big letter body 2, the front-end self-debugging sealing assembly mounting hole 8 is formed in the other end of the inner side of the external big letter body 2, the front-end self-debugging sealing assembly 3 comprises a threaded positioning sleeve 10, a spacer ring I11, a packing I12, a front-end guide sleeve 13, an adjusting spring 14 and a front-end inner letter body 15, wherein one end of the outer side of the front-end self-debugging sealing assembly 3 is sealed in an oblique angle mode to guarantee a sealing effect, the threaded positioning sleeve 10 is arranged at one end of the front-end inner letter body 15, and the front-end guide sleeve 13 is arranged at the other end of the inner letter body 15, four first packing 12 and a first spacer ring 11 are arranged between the thread positioning sleeve 10 and the front end guide sleeve 13, the first spacer ring 11 is symmetrically arranged between the four first packing 12, meanwhile, the adjusting spring 14 is arranged at the edge of the front end guide sleeve 13 in a penetrating way, the rear end manual built-in sealing component 4 comprises an external thread box body 16, a rear end guide sleeve 17, a second spacer ring 18, a second packing 19, a rear end guide sleeve 20, a guide sealing groove 21 and a pre-tightening thread 22, the guide sealing groove 21 is arranged on the surface of the external thread box body 16, the pre-tightening thread 22 is arranged at one end of the guide sealing groove 21, the pre-tightening thread 22 is positioned at one end of the outer surface of the external thread box body 16, the rear end guide sleeve 17 is arranged at one end of the inner side of the external thread box body 16, the rear end guide sleeve 20 is arranged at the other end of the inner side of the external thread box body 16, the second spacer ring 18 and the second packing 19 are arranged between the rear end guide sleeve 17 and the rear end guide sleeve 20, wherein the installation interval mode of spacer ring two 18 and packing two 19 is one-to-two interval mode, the one-way oiling valves of cone heart 5 includes oil valve casing 23, oil valve seat 24, resistant oil rubber seal 25, check valve core 26 and oil valve spring 27, oil valve casing 23 establishes fixedly through the bolt soon with oil valve seat 24, and check valve core 26 installs the inboard at oil valve casing 23, oil valve spring 27 suit is in the bottom of check valve core 26, and resistant oil rubber seal 25 pads establishes on the binding face of oil valve seat 24 and oil valve casing 23, the inboard of oil valve seat 24 is provided with the toper helicitic texture simultaneously, the outside one end of external big letter body 2 is provided with the conical surface structure, the one end of external big letter body 2 compresses tightly sealed cooperation through the cylinder conical surface.

The utility model discloses a theory of operation and use flow: the device is composed of an external big letter body 2, a front end self-adjusting sealing component 3, a rear end manual built-in sealing component 4, a self-aligning plunger 1 and a cone center one-way oiling valve group 5, wherein the front end big cylindrical column of the external big letter body 2 is designed, the cylindrical outer circle is provided with a sealing groove, a rubber sealing ring is installed and is in sealing positioning fit with a pump head spigot, the rear end of the front end big cylindrical column of the external big letter body 2 is designed to be taper, the size of a big head is the same as the diameter of the front end cylindrical column, the effective length of a cone surface is ensured, the external conical surface of the external big letter body 2 is mainly installed in fit with the internal conical surface of a letter body pressing plate, the external big letter body 2 is fixed on a pump head through a big pressing plate, the front end cylindrical column of the external big letter body 2 is designed to be positioned with an inner hole of the pump head, and the conical surface is in press fit, the coaxiality of the letter body and the pump head can be ensured, the problem of eccentric wear of the plunger in the reciprocating motion process can be ensured, the inner hole of the external big letter body 2 is designed in a cavity-separated mode, a big cylindrical precise hole close to one side of a pump head is formed, threads are arranged at the front end of the external big letter body 2, the external big letter body 2 is mainly used for being integrally disassembled from the front end of the pump head, a transition hole is formed in the rear end of a cylindrical hole and is larger than the diameter of a plunger by about 3mm, a slope lubricating hole is formed in the center of the length dimension of the transition hole, a tapered threaded hole is formed in the upper end of the lubricating hole and is used for installing a cone center one-way valve group 5, the rear end of the middle transition hole of the external big letter body 2 is a cylindrical threaded hole, an internal thread design is formed in the position close to the transition hole, the rear end of the threads is a high-precision cylindrical hole, the cylinder precise hole in the front and the back of a cavity of the external big letter body 2 guarantees the coaxiality requirements of the outer cylinder and the outer cone, a front-end self-adjusting sealing component 3 is installed in the front-cavity-front-end cylindrical precise hole of the external big letter body 2, and the front-end self-adjusting sealing component 3 is formed by a front-end inner letter body 15, the front end guide sleeve 13, the thread positioning sleeve 10, the spacer ring I11, the packing I12, the adjusting spring 14, the sealing element and the like, the excircle of the front end inner box body 15 is designed into a precise cylinder, the excircle is precisely matched with the front end inner hole of the external big box body 2, namely a front end self-debugging sealing component mounting hole 8, the sealing design adopts an end surface bevel angle rubber part for sealing, the sealing reliability is ensured by convenient installation, the inner hole of the front end inner box body 15 is designed into a long cylindrical front thread, the dimensional tolerance and the roughness are ensured, the behavior tolerance with the excircle is ensured at the same time, a plurality of adjusting spring mounting holes are uniformly distributed at the rear end of the big inner hole, the mounting holes are designed into steps, the rear end is a small hole, the rear end of each spring mounting hole is a threaded inner hole, the assembly is convenient to integrally disassemble, the adjusting spring 14 is sequentially installed in the big inner hole of the front end inner box body 15, the number of the adjusting spring 14 is designed into a reasonable spring specific pressure value, the adjusting spring 14 is contacted with the front end guide sleeve 13, the front end of the front end guide sleeve 13 is provided with a filler I12, a spacer ring I11 and a thread positioning sleeve 10, the outer circle of the thread positioning sleeve 10 is in a thread-through design, the outer end surface of the thread positioning sleeve 10 is provided with a small thread hole which is convenient to screw in the inner thread of the front end inner box body 15, the front end self-adjusting sealing component 3 is integrally installed, the front end self-adjusting sealing component is installed in the inner hole of the front end of the external big box body 2 after being integrally installed under a thread, the rear end manual built-in sealing component installation hole 6 of the external big box body 2 is provided with a rear end manual built-in sealing component 4, the rear end manual built-in sealing component 4 comprises an external thread box body 16, a rear end guide sleeve II 20, a filler II 19, a spacer ring II 18, a rear end guide sleeve I17, a sealing element and the like, the external thread box body 16 is in a three-step design, the front end step large outer circle short cylinder ensures enough strength, the large outer circle front end precision cylinder is designed, the outer circle is provided with a guide seal groove 21, the front end of the guide seal groove 21 is provided with a pre-tightening thread 22, the major diameter of the pre-tightening thread 22 is smaller than the diameter of a cylinder, the front end surface of the external screw box body 16 is provided with a plurality of small holes, the inner hole of the external screw box body 16 is also designed into a step hole, a large precise inner hole is designed in the same direction with the thread, the size, the tolerance, the behavior tolerance and the surface roughness of a precise outer circle are ensured, the diameter size of the rear end cylinder hole is more than three millimeters larger than the diameter of a plunger, a rear end guide sleeve I17, a plurality of fillers II 18, a spacer ring II 19 and a rear end guide sleeve II 20 are sequentially arranged in the large cylinder hole at the front end of the external screw box body 16, the rear end guide sleeve II 20 and the rear end guide sleeve I17 are designed into annular sleeves, the thickness of each size of the appearance is different, the other tolerance sizes are the same, the outer circle is matched with the large external screw box body 2, the inner hole is matched with the outer circle of the plunger, the outer circle, the precise matching and the guiding are both precise, and the fillers II 19 are formed into an annular shape, the leakage amount is controlled in a compression deformation mode, the second spacer ring 18 is a soft non-metal annular gasket and mainly assists in pre-tightening the filler, reducing the temperature and lubricating the plunger, a conical one-way oil injection valve group 5 is mounted at the upper end of an inclined hole of a spacer cavity in the external big box body 2 and consists of an oil valve seat 24, a one-way valve core 26, an oil valve cover 23 and an oil valve spring 27, the outer circle of the oil valve seat 24 is flange-shaped, a plurality of handle and holes are distributed on the section of the big outer circle, the front end of the big outer circle is precisely designed into a small cylinder, a sealing groove is designed into the outer circle, an inner hole at the front end is designed into a 90-degree sealing surface, the rear end of the conical pipe is designed into a conical pipe thread so as to be convenient for connecting an oil pipe, the large cylindrical surface of the one-way valve core 26 is designed into a 90-degree oblique angle sealing surface at the front end so as to ensure the length of the sealing surface, the front end surface is flat, small threads are arranged on the end surface, so as to be convenient for mounting tools, the small outer circle at the upper end of the big outer circle of the one-way valve core 26 is mainly used for mounting the oil valve spring 27, with the cooperation installation of oil valve spring 27 hole, the little hole guide fit of the little cylindrical precision design of upper end and oil valve cover 23, the design of the big excircle hexagonal of oil valve cover 23 front end, easy to assemble, the design of lower extreme excircle pipe thread, with the installation of external big letter body 2 screw thread seal, a plurality of screw holes of the big excircle section distribution of oil valve cover 23 front end, centre-to-centre spacing is the same with oil valve seat 24 via holes, a plurality of discharge orifices of lower extreme pipe thread section distribution, guarantee that lubricating oil overflows, the big inner bore precision design of oil valve cover 23, with the sealed cooperation of oil valve seat 24 excircle guide, big inner bore lower extreme is the design of annular cylinder hole, big hole and little hole guarantee size and position tolerance, the outer cylinder of little hole is installed with the cooperation of oil valve spring 27 hole, length size guarantees that check valve core 26 has certain decrement after installing, and check valve core 26's working space.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a double containment formula plunger letter body subassembly, includes from aligning formula plunger (1), external big letter body (2), front end from debugging seal assembly (3), manual built-in seal assembly of rear end (4) and one-way oiling valves of center of cone (5), its characterized in that: external big letter body (2) cover is established and is installed from the outside of aligning formula plunger (1), just manual built-in seal assembly (4) suit in the rear end is from the inboard one end of aligning formula plunger (1) and external big letter body (2), front end is from debugging seal assembly (3) suit in from the inboard other end of aligning formula plunger (1) and external big letter body (2).

2. The dual seal plunger capsule assembly of claim 1, wherein: the external big letter body (2) includes manual built-in seal assembly mounting hole (6) of rear end, oiling valves installation taper hole (7) and front end self-debugging seal assembly mounting hole (8), the top at external big letter body (2) is seted up in oiling valves installation taper hole (7), manual built-in seal assembly mounting hole (6) of rear end are seted up the inboard one end of external big letter body (2), front end self-debugging seal assembly mounting hole (8) are seted up the inboard other end of external big letter body (2).

3. The dual seal plunger capsule assembly of claim 1, wherein: front end self-debugging seal assembly (3) includes screw thread position sleeve (10), spacer ring (11), packs one (12), front end uide bushing (13), adjusting spring (14) and front end interior letter body (15), screw thread position sleeve (10) is installed the one end of front end interior letter body (15), just front end uide bushing (13) is installed the inboard other end of front end interior letter body (15), install four between screw thread position sleeve (10) and front end uide bushing (13) pack one (12) and one spacer ring (11), just spacer ring (11) symmetry is installed four pack between (12), simultaneously adjusting spring (14) run through install the edge of front end uide bushing (13).

4. The dual seal plunger capsule assembly of claim 1, wherein: manual built-in seal assembly of rear end (4) include the external screw thread box body (16), rear end uide bushing (17), spacer ring two (18), pack two (19), rear end uide bushing two (20), direction seal groove (21) and pretension screw thread (22), set up in direction seal groove (21) the surface of the external screw thread box body (16), pretension screw thread (22) are set up in the one end of direction seal groove (21), just pretension screw thread (22) are located the surface one end of external screw thread box body (16), install rear end uide bushing one (17) the inboard one end of the external screw thread box body (16), install rear end uide bushing two (20) the inboard other end of external screw thread box body (16), just spacer ring two (18) and two (19) of packing are installed rear end uide bushing one (17) with between the rear end uide bushing two (20).

5. A dual seal plunger housing assembly according to claim 1, wherein: one-way oiling valves of cone center (5) include oil valve bonnet (23), oil valve seat (24), resistant oily rubber seal (25), check valve core (26) and oil valve spring (27), oil valve bonnet (23) are established fixedly through the bolt soon with oil valve seat (24), just check valve core (26) are installed the inboard of oil valve bonnet (23), oil valve spring (27) suit is in the bottom of check valve core (26), just resistant oily rubber seal (25) pad is established on the binding face of oil valve seat (24) and oil valve bonnet (23), simultaneously the inboard of oil valve seat (24) is provided with the toper helicitic texture.

6. A dual seal plunger housing assembly according to claim 1, wherein: one end of the outer side of the front-end self-debugging sealing assembly (3) is sealed in an oblique angle mode.

7. The dual seal plunger capsule assembly of claim 1, wherein: the outer end of the large external letter body (2) is provided with a conical surface structure, and one end of the large external letter body (2) is in compression sealing fit with the cylindrical conical surface.

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