WO2023060665A1 - 法兰结构以及柱塞泵 - Google Patents

法兰结构以及柱塞泵 Download PDF

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Publication number
WO2023060665A1
WO2023060665A1 PCT/CN2021/128144 CN2021128144W WO2023060665A1 WO 2023060665 A1 WO2023060665 A1 WO 2023060665A1 CN 2021128144 W CN2021128144 W CN 2021128144W WO 2023060665 A1 WO2023060665 A1 WO 2023060665A1
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WO
WIPO (PCT)
Prior art keywords
hole
ring
outer ring
flange
end surface
Prior art date
Application number
PCT/CN2021/128144
Other languages
English (en)
French (fr)
Inventor
田志飞
崔文平
李朋
王继鑫
张树林
Original Assignee
烟台杰瑞石油装备技术有限公司
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Publication date
Application filed by 烟台杰瑞石油装备技术有限公司 filed Critical 烟台杰瑞石油装备技术有限公司
Publication of WO2023060665A1 publication Critical patent/WO2023060665A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • At least one embodiment of the present disclosure relates to a flange structure and a plunger pump.
  • plunger pumps are often used in cementing, acidizing, and fracturing operations, and are usually assembled on complete equipment in the form of carts or skids.
  • the plunger pump is driven by an external power source such as a diesel engine or a motor to drive the gear pair or reduction box of the plunger pump to run, and then drive the plunger pump to operate to realize the pumping of high-pressure liquid.
  • the driving flange of the plunger pump is connected with the gear pair or the reduction box of the plunger pump, and is usually connected with the gear pair or the reduction box in the form of a flat key structure or a spline structure.
  • the driving flange is connected to the driving shaft of the plunger pump, and is connected to an external power source such as a diesel engine or an electric motor through the driving shaft, so that the external power source drives the plunger to operate.
  • At least one embodiment of the present disclosure provides a flange structure, which includes a flange main body, a connecting ring structure and a connecting piece.
  • the flange main body has a first end surface and a second end surface opposite to each other in the axial direction, and includes a main body hole passing through the first end surface and the second end surface, and the main body hole includes an inner hole and the inner hole A through outer hole, the diameter of the outer hole is larger than the diameter of the inner hole, wherein the outer hole has a bottom surface intersecting with the inner hole and an inner surface intersecting with the bottom surface;
  • the connecting ring structure is at least partially located In the outer hole of the flange main body, and including a connecting ring hole penetrating with the inner hole of the flange main body along the axial direction;
  • the connecting ring structure has a first outer end surface close to the bottom surface of the outer hole , a second outer end surface opposite to the first outer end surface and an outer surface intersecting the first outer end surface and the second outer
  • the connecting ring structure includes an inner ring and an outer ring, and the outer ring is sleeved on the outside of the inner ring;
  • the outer ring has a The first outer ring end face of the bottom surface and the outer surface intersecting with the first outer ring end face and extending along the axial direction, the first outer ring end face of the outer ring serves as the first outer end face of the connecting ring structure , the outer surface of the outer ring is used as the outer surface of the connecting ring structure;
  • the installation hole penetrates the inner ring and the outer ring along the axial direction, and the connecting piece connects the inner ring and the The outer ring is connected so that pressure along the radial direction is generated between the outer ring and the surfaces of the outer ring nested with each other.
  • the outer ring includes a first outer ring hole and a second outer ring hole, and the second outer ring hole is located far from the first outer ring hole.
  • One side of the inner hole of the flange main body is connected with the first outer ring hole along the axial direction, and the diameter of the second outer ring hole is larger than that of the first outer ring hole;
  • the second The outer ring hole has a bottom surface intersecting with the first outer ring hole and an inner surface intersecting with the bottom surface;
  • the inner ring includes a first inner ring end surface close to the bottom surface of the second outer ring hole and on the shaft a second inner ring end face upwardly opposite to the first inner ring end face, and having an inner ring hole passing through the first inner ring end face and the second inner ring end face along the axial direction, the inner ring
  • the hole has an outer surface surrounding the axial direction and close to the inner surface of the second outer ring hole; the inner ring is at least partially
  • connection holes the second connection hole is connected with the first connection hole;
  • the installation hole includes the first connection hole and the second connection hole, and the end surface of the first outer ring serves as the first The outer end surface, the second inner ring end surface is used as the second outer end surface;
  • the connecting piece passes through the second connection hole and the first connection hole in sequence and connects with the second connection hole and the first connection hole
  • a connection hole is mated and connected to connect the inner ring and the outer ring and make the inner surface of the second outer ring hole and the outer surface of the inner ring hole exert pressure on each other along the radial direction.
  • the diameter of the first outer ring hole and the diameter of the inner ring hole are equal to the diameter of the inner hole of the flange main body.
  • the first connecting hole is a threaded hole
  • the second connecting hole is a non-threaded hole
  • a part of the bolt that is matched with the second connection hole has threads
  • a part of the bolt that is matched with the second connection hole has no threads.
  • the flange structure includes a plurality of connecting pieces, a plurality of first connecting holes and a plurality of connecting holes corresponding to the connecting pieces one by one.
  • the second connecting hole, the plurality of connecting pieces surround the inner ring hole.
  • the inner surface of the second outer ring hole and the outer surface of the inner ring hole are both tapered surfaces.
  • both the second outer ring hole and the inner ring hole are tapered holes; In the direction of the second outer ring hole, the diameter of the second outer ring hole gradually increases, and the diameter of the inner ring hole gradually increases.
  • the hole wall of the second outer ring hole has a second outer ring end face opposite to the first outer ring end face, and the outer surface of the inner ring hole
  • One end away from the bottom surface of the second outer ring hole has a first step, and the first step has a first stepped surface opposite to the end surface of the second outer ring;
  • the working state there is a first gap between the bottom surface of the second outer ring hole and the first inner ring end face of the inner ring, and there is a second gap between the second outer ring end face and the first stepped surface.
  • the dimension of the first slit along the axial direction is equal to the dimension of the second slit along the axial direction; when the flange structure is in the assembled working state, the second outer ring hole
  • the bottom surface is attached to the first inner ring end surface of the inner ring, and the second outer ring end surface is attached to the first stepped surface.
  • the outer ring has a first slit, and the first slit extends along the axial direction and The body is broken; the inner ring has a second slit extending along the said inner ring and breaking the ring body of the inner ring around the axial direction.
  • At least one embodiment of the present disclosure further provides a plunger pump, and the plunger pump includes any flange structure provided by the embodiments of the present disclosure.
  • a plunger pump provided by an embodiment of the present disclosure includes a plunger, a first drive shaft, and a drive device.
  • the drive shaft is configured to be rotatable to drive the plunger to move, the first end of the flange main body has the first end face, the second end of the flange main body has the second end face, the first The end of the drive shaft is located at the first end of the flange main body and the first drive shaft passes through the inner hole of the flange structure and the connecting ring hole in sequence, and the inner hole of the inner hole around the axial direction
  • the surface and the inner surface of the connecting ring hole around the axial direction are in contact with the outer surface of the first drive shaft and exert radial pressure on each other to fix the first drive shaft;
  • the drive device includes a second Two driving shafts, the end of the second driving shaft is located at the first end of the flange main body and located in the outer hole, connected with the flange structure, and configured to be rotatable to drive the first The drive shaft
  • the inner surface of the connecting ring hole and the outer side of the first drive shaft face each other and exert a greater pressure than the inner surface of the inner hole of the flange body.
  • the surface and the outer side of the first drive shaft face the pressure exerted on each other.
  • the inner hole of the flange body is located at the second end of the flange body;
  • the first drive shaft includes a second step, and the second step has The second stepped surface facing the second end surface is in contact with the first end surface.
  • FIG. 1 is a schematic disassembly diagram of a flange structure and a plunger pump provided by an embodiment of the present disclosure
  • Fig. 2 is a schematic diagram of an inner ring and an outer ring of a flange structure provided by an embodiment of the present disclosure
  • Fig. 3 is a schematic diagram of a flange structure provided by an embodiment of the present disclosure in a non-working state of incomplete assembly
  • Fig. 4 is a schematic diagram of a flange structure provided by an embodiment of the present disclosure in a working state of complete assembly
  • Fig. 5 is an enlarged schematic diagram of a part L in Fig. 3;
  • Fig. 6A is a schematic diagram of a power end of a plunger pump provided by an embodiment of the present disclosure
  • Fig. 6B is a schematic diagram of the plunger pump after combining the fluid end with the power end shown in Fig. 6A.
  • the diameter of a hole refers to the size of the hole perpendicular to the axial direction.
  • the driving flange used in traditional plunger pumps is usually connected to the gear pair or reduction box of the plunger pump by a flat key connection or a spline connection, that is, the drive flange is connected to the plunger pump through a flat key or spline.
  • the drive shaft is connected, for example, through an external power source such as a diesel engine or a motor to drive the drive flange to rotate, and the drive flange drives the drive shaft of the plunger pump to rotate through a flat key or spline to realize the transmission function of the drive drive shaft.
  • the flat key structure connection form or the spline structure connection form of the driving flange has the following deficiencies.
  • the driving flange with flat key structure or spline structure used in traditional plunger pumps has no overload protection function. When the external power source input load is overloaded, the plunger pump is easily damaged.
  • At least one embodiment of the present disclosure provides a flange structure, which includes a flange main body, a connecting ring structure and a connecting piece.
  • the flange main body has a first end surface and a second end surface opposite to each other in the axial direction, and includes a main body hole passing through the first end surface and the second end surface, and the main body hole includes an inner hole and the inner hole A through outer hole, the diameter of the outer hole is larger than the diameter of the inner hole, wherein the outer hole has a bottom surface intersecting with the inner hole and an inner surface intersecting with the bottom surface;
  • the connecting ring structure is at least partially located In the outer hole of the flange main body, and including a connecting ring hole penetrating with the inner hole of the flange main body along the axial direction;
  • the connecting ring structure has a first outer end surface close to the bottom surface of the outer hole , a second outer end surface opposite to the first outer end surface and an outer surface intersecting the first outer end surface and the second outer
  • the flange structure can be used to connect the drive shaft of the plunger pump and the drive shaft of the driving device.
  • the drive flange of the plunger pump the keyless connection between the flange structure and the drive shaft of the plunger pump is realized, and the above-mentioned solution through flat
  • At least one embodiment of the present disclosure further provides a plunger pump, and the plunger pump includes any flange structure provided by the embodiments of the present disclosure.
  • Fig. 1 is a disassembled schematic diagram of a flange structure and a plunger pump provided by an embodiment of the present disclosure
  • Fig. 4 is a working state of a flange structure provided by an embodiment of the present disclosure in an assembled state schematic diagram
  • the flange structure includes a flange main body 1 , a connecting ring structure 200 and a connecting piece 4
  • the flange main body 1 has a first end surface 11 and a second end surface 12 opposite to each other in the axial direction, and includes a body hole H0 passing through the first end surface 11 and the second end surface 12
  • the main body hole H0 includes an inner hole H1 and an outer hole H2 passing through the inner hole H1.
  • the diameter of the outer hole H2 is larger than that of the inner hole H1, that is, the inner hole H1 and the outer hole H2 are axially connected.
  • the outer hole H2 has a bottom surface 01 that intersects with the inner hole H1 and an inner surface 02 that intersects with the bottom surface 01, that is, the bottom surface 01 is the part of the outer hole H2 that does not overlap with the inner hole H1 in the axial direction and deviates from the inner hole H1 in the axial direction. surface, the inner surface 02 surrounds the axial direction.
  • the connection ring structure 200 is at least partially located in the outer hole H2 of the flange body 1 and includes a connection ring hole axially penetrating through the inner hole H1 of the flange body 1 .
  • the connecting ring structure 200 has a first outer end surface 201 close to the bottom surface 01 of the outer hole H2, a second outer end surface 202 opposite to the first outer end surface 201, and an outer surface intersecting the first outer end surface 201 and the second outer end surface 202 203, the outer end surface of the connecting ring structure 200 is attached to the bottom surface 01 of the outer hole H2, as shown in Figure 4, the outer surface 203 of the connecting ring structure 200 is attached to the inner surface 02 of the outer hole H2;
  • the mounting holes axially pass through the first outer end surface 201 and the second outer end surface 202 .
  • the connecting piece 4 passes through the mounting hole and is mated with the mounting hole so that the inner surface 02 of the outer hole H2 and the outer surface 203 of the connecting ring structure 200 exert radial pressure on each other, and the radial direction is perpendicular to the axial direction.
  • the flange structure can be used to connect the driving shaft of the plunger pump (hereinafter referred to as the first driving shaft) and the driving shaft of the driving device (hereinafter referred to as the second driving shaft), as the driving flange of the plunger pump.
  • the first drive shaft 5 of the plunger pump can be set in the inner hole H1 of the flange main body 1 and the hole of the connecting ring that pass through each other.
  • the drive shaft is fixed by the above-mentioned huge friction force and the power from the power source is transmitted to the first drive shaft 5.
  • the power source is connected to the first end of the driving flange 1, that is, the end with the first end face 11 to drive the flange structure to rotate, and the flange structure drives the first end through the huge friction between the inner surface 36 of the connecting ring hole and the drive shaft.
  • a drive shaft 5 rotates to provide power to the plunger pump, that is, to transmit torque and load through the above-mentioned friction force.
  • the first end surface 11 of the first end of the driving flange 1 is designed with a notch structure and a threaded hole structure, and the notch structure and the threaded hole structure are configured to be connected to an external power source, which is a column Plug pump provides power.
  • the spigot structure is connected to an external power source such as a diesel engine or a motor, such as the motor shaft of the motor, for positioning;
  • the threaded hole is connected to an external power source such as a diesel engine or a motor, such as connected to the motor shaft of the motor, and is used for shock absorption with silicone oil
  • the device is connected to play the role of fixing the external power source and the silicone oil shock absorber.
  • Fig. 2 is a schematic diagram of an inner ring and an outer ring of a flange structure provided by an embodiment of the present disclosure
  • Fig. 3 is a schematic diagram of a flange structure provided by an embodiment of the present disclosure in a non-working state of incomplete assembly .
  • connection ring structure 200 includes an inner ring 2 and an outer ring 3, and the outer ring 3 is sleeved on the outside of the inner ring 2; the outer ring 3 has a first outer ring end surface close to the bottom surface 01 of the outer hole H2 21 and the outer surface 22 intersecting with the first outer ring end face 21 and extending in the axial direction, the first outer ring end face 21 of the outer ring 3 serves as the first outer end face 201 of the connecting ring structure 200, and the outer surface 22 of the outer ring 3 serves as The outer side 203 of the ring structure 200 is connected.
  • the installation hole runs through the inner ring 3 and the outer ring 2 in the axial direction, and the connecting piece 4 connects the inner ring 3 and the outer ring 2 so that the inner ring 3 and the outer ring 2 are nested with each other and surround the axial surface 24/33.
  • Pressure in the radial direction so that in the working state after the flange structure is assembled on the first drive shaft 5, the inner ring 3 and the outer ring 2 sleeve each other and surround each other between the axial faces 24/33 tension.
  • the outer ring 2 includes a first outer ring hole H3 and a second outer ring hole H4, and the second outer ring hole H4 is located at the inner hole H1 of the first outer ring hole H3 away from the flange main body 1.
  • One side is axially connected with the first outer ring hole H3, and the diameter of the second outer ring hole H4 is larger than that of the first outer ring hole H3; the second outer ring hole H4 has a The bottom surface 23 and the inner surface 24 intersecting with the bottom surface 23 and surrounding the axial direction.
  • the inner ring 3 includes a first inner ring end surface 31 close to the bottom surface 23 of the second outer ring hole H4 and a second inner ring end surface 32 opposite to the first inner ring end surface 31 in the axial direction, and has an axially penetrating
  • the inner ring hole H5 of the first inner ring end surface 31 and the second inner ring end face 32 has an outer surface 33 around the axial direction and close to the inner surface 24 of the second outer ring hole H4 .
  • the inner ring 3 is at least partly located in the second outer ring hole H4, the inner surface 24 of the second outer ring hole H4 is sleeved on the outer surface 33 of the inner ring hole H5 and attached to the outer surface 33 of the inner ring hole H5, and , the inner ring hole H5 and the first outer ring hole H3 pass through in the axial direction;
  • the connecting ring hole includes the first outer ring hole H3 and the inner ring hole H5, and the outer surface 22 of the outer ring constitutes the outer surface and the first outer ring hole H3 The outer surface of the second outer ring hole H4.
  • the outer ring 2 includes a first connecting hole V1 penetrating through the bottom surface 23 of the second outer ring hole H4 and the first outer ring end face 21
  • the inner ring includes a second connecting hole passing through the first inner ring end face 31 and the second inner ring end face 32 V2, the second connection hole V2 passes through the first connection hole V1;
  • the installation hole includes the first connection hole V1 and the second connection hole V2, the first outer ring end face 21 serves as the first outer end face 201, and the second inner ring end face 32 serves as The second outer end surface 202 .
  • the connecting piece 4 passes through the second connecting hole V2 and the first connecting hole V1 in turn and is mated with the second connecting hole V2 and the first connecting hole V1 to connect the inner ring 3 and the outer ring 2 and make the second outer ring hole H4
  • the inner surface 24 of the inner ring hole H5 and the outer surface 33 of the inner ring hole H5 exert radial pressure on each other, so that in the working state after the flange structure is assembled on the first drive shaft 5, the second outer ring hole H4
  • the inner surface 24 of the ring structure 200 and the outer surface 33 of the inner ring hole H5 are in tension with each other, so that a huge holding force is generated between the outer surface 203 of the connecting ring structure 200 and the inner surface 02 of the outer hole H2 to tension each other, and the connection A huge holding force is generated between the inner surface 36 of the annular hole and the first drive shaft 5 to tension each other.
  • the bolt 4 When the flange structure is in working condition, the bolt 4 is tightened. As the bolt 4 is tightened, the inner ring 3 and the outer ring 2 are gradually tensed, the outer surface 203 of the connecting ring structure 200 and the inner surface 02 of the outer hole H2 are gradually tensed, and the inner surface 36 of the connecting ring hole is connected to the first drive shaft. The outer surface of 5 is gradually tensioned.
  • the diameter of the first outer ring hole H3 and the inner ring hole H5 are equal to the diameter of the inner hole H1 of the flange main body 1 .
  • the first drive shaft 5 can pass through the inner hole H1 of the flange main body 1, the first outer ring hole H3 and the inner ring hole H5 in sequence, and the inner side wall of the inner ring hole H5 and the inner side wall 26 of the first outer ring hole H3
  • the inner side wall 36 of the inner ring hole H5 is in contact with the outer side of the first driving shaft 5 and exerts a huge holding force on the outer side of the first driving shaft 5 .
  • first connection hole V1 and the second connection hole V2 are bolt holes.
  • first connection hole V1 is a threaded hole
  • second connection hole V2 is a non-threaded hole
  • the connector 4 is a bolt, such as a high-strength tension bolt, and the part of the bolt 4 that is matched with the first connection hole V1 has threads, and the bolt The part of 4 that matches and connects with the second connecting hole V2 has no thread.
  • connection ring structure 200 A huge holding force is generated between the outer surface 203 and the inner surface 02 of the outer hole H2 to tension each other, and a huge holding force is generated between the inner surface 36 of the connecting ring hole and the first drive shaft 5 to tension each other.
  • the inner surface 24 of the second outer ring hole H4 and the outer surface 33 of the inner ring hole H5 are in tension with each other; and the part of the bolt 4 that is matched with the first connection hole V1 has a thread that can make the bolt 4 and the outer ring 2
  • the connected ends are firmly fixed to ensure the stability of the combination of the outer ring 2 and the inner ring 3 .
  • the flange structure includes a plurality of connecting parts 4 and a plurality of first connecting holes V1 and a plurality of second connecting holes V2 corresponding to the plurality of connecting parts 4 , and the plurality of connecting parts 4 surrounds the inner ring hole H5 .
  • a plurality of connecting pieces 4 are arranged around the inner ring hole H5 and the first outer ring hole H3 to further increase the radial pressure exerted on each other by the inner surface 24 of the second outer ring hole H4 and the outer surface 33 of the inner ring hole H5 , thereby increasing the frictional force driving the rotation of the first drive shaft 5, improving the connection and transmission effect of the flange structure, and improving the reliability of the flange structure.
  • a plurality of connecting pieces 4 are distributed symmetrically with respect to the axial direction.
  • the number of connecting pieces 4 distributed symmetrically with respect to the axial direction is at least four, so as to ensure the reliability of the flange structure.
  • the present disclosure does not specifically limit the number of connecting pieces 4 .
  • the inner surface 24 of the second outer ring hole H4 and the outer surface 33 of the inner ring hole H5 are tapered surfaces, so that the inner surface 24 of the second outer ring hole H4 and the inner ring hole
  • the pressure generated by the outer surface 33 of H5 on each other has a radial component force, so that the inner surface 24 of the second outer ring hole H4 and the inner ring hole H5 are tensioned (fitted and hugged) to each other in the radial direction, and further Specifically, the outer surface 203 of the connecting ring structure 200 and the inner surface 02 of the outer hole H2 are tensioned to each other in the radial direction, and the inner surface 36 of the connecting ring hole and the first drive shaft 5 are tensioned to each other in the radial direction.
  • the above-mentioned conical surface is, for example, a conical surface. Compared with other conical surfaces, the conical surface can generate uniform lateral pressure at each position of the conical surface.
  • the second outer ring hole H4 and the inner ring hole H5 are tapered holes, and, in the axial direction and along the direction from the first outer ring hole H3 to the second outer ring hole H4
  • the aperture diameter of the second outer ring hole H4 gradually increases
  • the aperture diameter of the inner ring hole H5 gradually increases, so as to reduce the difficulty of installing the inner ring 3 and the outer ring 2, and facilitate the outer surface of the inner ring 3 to be far away from the outer ring.
  • the first step 30 at the end of the ring 2 (see below for details) makes the first step 30 and the second outer ring end surface 25 contact and close to each other.
  • the hole wall of the second outer ring hole H4 has a second outer ring end face 25 opposite to the first outer ring end face 21, and one end of the outer surface 33 of the inner ring hole H5 away from the bottom surface 23 of the second outer ring hole H4 has
  • the first step 30 has a first stepped surface 34 opposite to the second outer ring end surface 25 .
  • FIG. 5 is an enlarged schematic view of a part L in FIG. 3 . 3 and 5, in the non-working state of the flange structure incomplete assembly, there is a first gap between the bottom surface 23 of the second outer ring hole H4 and the first inner ring end face 31 of the inner ring (the first gap refers to In Fig. 3, the blank part between the bottom surface 23 of the second outer ring hole H4 and the first inner ring end face 31 of the inner ring), there is a second gap between the second outer ring end face 25 and the first stepped surface 34 (first The gap refers to the blank part between the second outer ring end surface 25 and the first stepped surface 34 in FIG.
  • the angle between the inner surface 24 of the ring hole H4 and the outer surface 33 of the inner ring hole H5 is equal to the axial direction and the length along the axial direction is equal.
  • the outer ring 2 has a first slit C1, the first slit C1 extends axially and disconnects the ring body of the outer ring 2 around the axial direction; the inner ring has a second slit C2, The second cutout C2 extends along and breaks off the ring body of the inner ring 3 around the axial direction.
  • the first notch C1 and the second notch C2 are used to adjust the amount of deformation of the inner ring 3 and the outer ring 2 during tensioning.
  • At least one embodiment of the present disclosure further provides a plunger pump, and the plunger pump includes any flange structure provided by the embodiments of the present disclosure.
  • FIG. 6A is a schematic diagram of a power end of a plunger pump provided by an embodiment of the present disclosure
  • FIG. 6B is a schematic diagram of a plunger pump after combining a fluid end with the power end shown in FIG. 6A
  • the plunger pump includes a power end 6 and a fluid end 7 .
  • the power end 6 includes a drive device and a transmission mechanism 61, the first drive shaft 5 is connected to the transmission mechanism 61;
  • the drive device includes a second drive shaft, the first end of the flange body 1 has a first end face 11, and the first end of the flange body 1
  • the two ends have a second end surface 12, the end of the second drive shaft is located at the first end of the flange main body 1 and in the outer hole H2, connected to the flange structure, for example, connected to the end of the first drive shaft 5, and the second
  • the two drive shafts are configured to be rotatable to drive the first drive shaft 5 to rotate.
  • the plunger is located in the working chamber of the fluid end (not shown), and the end of the transmission mechanism 61 close to the fluid end 7 is connected to the plunger, and the plunger is driven by the driving device and the transmission mechanism 61 in the working chamber.
  • Perform reciprocating motion to realize the change of the working volume of the working cavity provided with the Vers valve and the opening and closing of the Vers valve to realize the pumping of high-pressure liquid such as oil.
  • the first drive shaft 5 rotates to drive the plunger to move.
  • the power end 6 includes multiple power end cylinders 60
  • the fluid end 7 includes multiple fluid end cylinders 70
  • Each liquid end cylinder 70 includes a working chamber and a plunger located in the working chamber.
  • transmission shaft 61 connected to the plunger of the transmission mechanism is shown here to schematically represent the transmission mechanism.
  • Other structures of the transmission mechanism are not shown and can be designed according to conventional techniques in the art.
  • FIG. 6B takes a five-cylinder plunger pump as an example, that is, the power end 6 includes five power end cylinders 60 , and the fluid end 7 includes five fluid end cylinders 70 .
  • the embodiments of the present disclosure do not limit the numbers of cylinders at the power end and cylinders at the liquid end of the plunger pump.
  • the end of the first drive shaft 5 is located at the first end of the flange body 1 and passes through the inner hole H1 of the flange structure and the connecting ring hole in turn, for example, through the inner hole of the flange structure in turn H1, the first outer ring hole H3 of the outer ring 2 and the inner ring hole H5 of the inner ring 3, the inner surface of the inner hole H1 around the axial direction and the inner surface of the connecting ring hole around the axial direction are all connected to the first drive shaft 5
  • the outer surfaces of the first drive shaft 5 are in contact with each other and exert radial pressure on each other to fix the first drive shaft 5.
  • the specific working process is as described in the previous embodiment and will not be repeated here.
  • the inner surface of the connecting ring hole and the outer side of the first drive shaft 5 exert a greater pressure on each other than the inner surface 100 of the inner hole H1 and the side of the drive shaft exert on each other.
  • the inner hole H1 of the flange main body 1 is located at the first end of the flange main body 1, and the inner hole H1 of the flange main body 1 is located at the second end of the flange main body 1;
  • the second step has a second stepped surface 51 facing the second end surface 12 , and the second stepped surface 51 is in contact with the second end surface 12 to limit the flange main body 1 through the second stepped surface 51 .

Abstract

一种法兰结构以及柱塞泵，在法兰结构中，法兰主体（1）具有在轴向上彼此相对的第一端面（11）和第二端面（12），且包括贯穿第一端面（11）和第二端面（12）的主体孔（H0），主体孔（H0）包括内孔（H1）和与内孔（H1）贯通的外孔（H2），外孔（H2）的孔径大于内孔（H1）的孔径；外孔（H2）具有与内孔（H1）相交的底面（01）和与底面（01）相交的内侧面（02）；连接环结构（200）位于法兰主体（1）的外孔（H2）中，且包括与法兰主体（1）的内孔（H1）沿轴向贯通的连接环孔；连接环结构（200）具有第一外端面（201）、第二外端面（202）和外侧面（203），连接环结构（200）的外端面与外孔（H2）的底面（01）贴合，连接环结构（200）的外侧面（203）与外孔（H2）的内侧面（02）贴合；连接环结构（200）包括沿轴向贯穿第一外端面（201）和第二外端面（202）的安装孔；连接件（4）穿过安装孔且与安装孔匹配连接以使外孔（H2）的内侧面（02）与连接环结构（200）的外侧面（203）彼此施加沿径向的压力，径向垂直于轴向。

Description

法兰结构以及柱塞泵
本申请要求于2021年10月14日递交的中国专利申请第202111197742.4号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开至少一实施例涉及一种法兰结构以及柱塞泵。
背景技术
柱塞泵作为油田作业的核心部件，常用于固井、酸化、压裂作业中，通常以车或者撬的形式装配在整机设备上。柱塞泵在现场工作中，柱塞泵在外部动力源例如柴油机或电机的驱动下，带动柱塞泵的齿轮副或减速箱运转，进而带动柱塞泵运行工作，实现高压液体的泵送。
柱塞泵用驱动法兰，与柱塞泵的齿轮副或减速箱连接在一起，通常是以平键结构形式或花键结构形式与齿轮副或减速箱连接在一起。同时，驱动法兰与柱塞泵的驱动轴连接，并通过驱动轴与外部动力源例如柴油机或电机连接，实现外部动力源驱动柱塞运行工作。
发明内容
本公开至少一实施例提供一种法兰结构，该法兰结构包括法兰主体、连接环结构和连接件。法兰主体具有在轴向上彼此相对的第一端面和第二端面，且包括贯穿所述第一端面和所述第二端面的主体孔，所述主体孔包括内孔和与所述内孔贯通的外孔，所述外孔的孔径大于所述内孔的孔径，其中，所述外孔具有与所述内孔相交的底面和与所述底面相交的内侧面；连接环结构至少部分位于所述法兰主体的外孔中，且包括与所述法兰主体的内孔沿所述轴向贯通的连接环孔；所述连接环结构具有靠近所述外孔的底面的第一外端面、与所述第一外端面相对的第二外端面和与所述第一外端面以及所述第二外端 面相交的外侧面，所述连接环结构的外端面与所述外孔的底面贴合，所述连接环结构的外侧面与所述外孔的内侧面贴合；所述连接环结构包括沿所述轴向贯穿所述第一外端面和所述第二外端面的安装孔；所述连接件穿过所述安装孔且与所述安装孔匹配连接以使所述外孔的内侧面与所述连接环结构的外侧面彼此施加沿径向的压力，所述径向垂直于所述轴向。
例如，本公开一实施例提供的法兰结构中，所述连接环结构包括内环和外环，所述外环套设于所述内环的外侧；所述外环具有靠近所述外孔的底面的第一外环端面和与所述第一外环端面相交且沿所述轴向延伸的外表面，所述外环的第一外环端面作为所述连接环结构的第一外端面，所述外环的外表面作为所述连接环结构的外侧面；所述安装孔沿所述轴向贯穿所述内环和所述外环，所述连接件将所述内环与所述外环连接并使得所述外环与所述外环彼此套设的面之间产生沿所述径向的压力。
例如，本公开一实施例提供的法兰结构中，所述外环包括第一外环孔和第二外环孔，所述第二外环孔位于所述第一外环孔的远离所述法兰主体的内孔的一侧且与所述第一外环孔沿所述轴向贯通，且所述第二外环孔的孔径大于所述第一外环孔的孔径；所述第二外环孔具有与所述第一外环孔相交的底面和与该底面相交的内侧面；所述内环包括靠近所述第二外环孔的底面的第一内环端面和在所述轴向上与所述第一内环端面相对的第二内环端面，且具有沿所述轴向贯穿所述第一内环端面和所述第二内环端面的内环孔，所述内环孔具有围绕所述轴向且靠近所述第二外环孔的内侧面的外表面；所述内环至少部分位于所述第二外环孔中，所述第二外环孔的内侧面套设于所述内环孔的外表面上且与所述内环孔的所述外表面贴合，并且，所述内环孔与所述第一外环孔沿所述轴向贯通；所述连接环孔包括所述第一外环孔和所述内环孔，所述外环的外表面构成所述第一外环孔的外表面和所述第二外环孔的外表面；所述外环包括贯穿所述第二外环孔的底面和所述第一外环端面的第一连接孔，所述内环包括贯穿所述第一内环端面和所述第二内环端面的第二连接孔，所述第二连接孔与所述第一连接孔贯通；所述安装孔包括所述第一连接孔和所述第二连接孔，所述第一外环端面作为所述第一外端面，所述第二内环端面作为所述第二外端面；所述连接件依次穿过所述第二连接孔和所述 第一连接孔且与所述第二连接孔和所述第一连接孔匹配连接，以连接所述内环与所述外环并使所述第二外环孔的内侧面与所述内环孔的外表面对彼此施加沿所述径向的压力。
例如，本公开一实施例提供的法兰结构中，所述第一外环孔的孔径、所述内环孔的孔径与所述法兰主体的内孔的孔径相等。
例如，本公开一实施例提供的法兰结构中，所述第一连接孔为螺纹孔，所述第二连接孔为非螺纹孔；所述连接件为螺栓，所述螺栓的与所述第一连接孔匹配连接的部分具有螺纹，所述螺栓的与所述第二连接孔匹配连接的部分不具有螺纹。
例如，本公开一实施例提供的法兰结构中，所述法兰结构包括多个所述连接件和与所述多个连接件一一对应的多个所述第一连接孔和多个所述第二连接孔，所述多个连接件围绕所述内环孔。
例如，本公开一实施例提供的法兰结构中，所述第二外环孔的内侧面与所述内环孔的外表面均为锥形面。
例如，本公开一实施例提供的法兰结构中，所述第二外环孔和所述内环孔均为锥形孔；在沿所述轴向且沿从所述第一外环孔到所述第二外环孔的方向上，所述第二外环孔的孔径逐渐增大，且所述内环孔的孔径逐渐增大。
例如，本公开一实施例提供的法兰结构中，所述第二外环孔的孔壁具有与所述第一外环端面相对的第二外环端面，所述内环孔的外表面的远离所述第二外环孔的底面的一端具有第一台阶，所述第一台阶具有与所述第二外环端面彼此相对的第一台阶面；所述法兰结构在未完成装配的非工作状态下，所述第二外环孔的底面与所述内环的第一内环端面之间存在第一缝隙，所述第二外环端面与所述第一台阶面之间存在第二缝隙，所述第一缝隙沿所述轴向的尺寸与所述第二缝隙沿所述轴向的尺寸相等；所述法兰结构在完成装配的工作状态下，所述第二外环孔的底面与所述内环的第一内环端面贴合，所述第二外环端面与所述第一台阶面贴合。
例如，本公开一实施例提供的法兰结构中，所述外环具有第一切口，所述第一切口沿所述轴向延伸并将所述外环的围绕所述轴向的环体断开；所述内环具有第二切口，所述第二切口沿所述延伸并将所述内环的围绕所述轴向 的环体断开。
本公开至少一实施例还提供一种柱塞泵，该柱塞泵包括本公开实施例提供的任意一种法兰结构。
例如，本公开一实施例提供的柱塞泵包括柱塞、第一驱动轴和驱动装置。驱动轴配置为可转动以驱动所述柱塞运动，所述法兰主体的第一端具有所述第一端面，所述法兰主体的第二端具有所述第二端面，所述第一驱动轴的端部位于所述法兰主体的第一端且所述第一驱动轴依次穿过所述法兰结构的内孔和连接环孔，所述内孔的围绕所述轴向的内表面以及所述连接环孔的围绕所述轴向的内表面均与所述第一驱动轴的外侧面接触且对彼此施加沿径向的压力以固定所述第一驱动轴；驱动装置包括第二驱动轴，所述第二驱动轴的端部位于所述法兰主体的第一端且位于所述外孔中，与所述法兰结构连接，且配置为可转动以驱动所述第一驱动轴转动。
例如，本公开一实施例提供的柱塞泵中，所述连接环孔的内表面与所述第一驱动轴的外侧面对彼此施加的压力大于所述法兰主体的所述内孔的内表面与所述第一驱动轴的外侧面对彼此施加的压力。
例如，本公开一实施例提供的柱塞泵中，所述法兰主体的内孔位于所述法兰主体的第二端；所述第一驱动轴包括第二台阶，所述第二台阶具有朝向所述第二端面的第二台阶面，所述第二台阶面与所述第一端面接触。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1为本公开一实施例提供的一种法兰结构和柱塞泵的拆解示意图；
图2为本公开一实施例提供的一种法兰结构的内环和外环的示意图；
图3为本公开一实施例提供的一种法兰结构在未完成装配的非工作状态下的示意图；
图4为本公开一实施例提供的一种法兰结构在完成装配的工作状态下的示意图；
图5为图3中的局部L的放大示意图；
图6A为本公开一实施例提供的一种柱塞泵的动力端的示意图；
图6B为将液力端与图6A所示的动力端结合后的柱塞泵的示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其它实施例，都属于本发明保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本发明专利申请说明书以及权利要求书中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“内”、“外”、“上”、“下”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
本公开中的附图并不是严格按实际比例绘制，法兰结构中连接件的个数也不是限定为图中所示的数量，连接件的具体数量、以及各个结构的具体尺寸可根据实际需要进行确定。本公开中所描述的附图仅是结构示意图。
需要说明的是，本公开中孔(例如内孔、外孔、第一外环孔、第二外环孔、内环孔)的孔径是指该孔的在垂直于轴向上的尺寸。
传统的柱塞泵用的驱动法兰，与柱塞泵的齿轮副或减速箱的连接方式，通常为平键连接或花键连接，即通过平键或花键将驱动法兰与柱塞泵的驱动轴连接，例如通过外部动力源例如柴油机或电机驱动驱动法兰转动，驱动法兰通过平键或花键驱动柱塞泵的驱动轴转动，以实现传动驱动轴的传动功能。在油田长时间作业过程中，驱动法兰的平键结构连接形式或花键结构连接形式存在出如下的不足。
(1)平键连接形式结构的驱动法兰，平键与驱动法兰、驱动轴上的平键槽过盈紧配合，装配过程通常需借助大锤等工具将平键装入驱动法兰与驱动轴上的平键槽中，油田中长时间运行后，平键结构会与驱动法兰及驱动轴产生长时间的挤压，造成一定的变形量，同时，在复杂恶劣的油田现场，驱动法兰长时间运行中外界的沙土等杂质也会渗入键槽中，再考虑到平键等结构产生的锈蚀，使得柱塞泵在维保时，驱动法兰难以拆解，增加柱塞泵维保的难度。
(2)花键连接形式结构的驱动法兰，驱动法兰与驱动轴通过花键结构连接在一起，装配过程相比于平键结构形式的驱动法兰变得容易，在现场维保中，也不存在驱动法兰难拆解的问题，但是花键结构形式的驱动法兰，结构形式相对复杂，加工精度要求高，加工成本高，加工时间长。
(3)传统柱塞泵用的平键结构或者花键结构的驱动法兰，没有过载保护功能，当外部的动力源输入荷载超载，柱塞泵容易受到损害。
本公开至少一实施例提供一种法兰结构，该法兰结构包括法兰主体、连接环结构和连接件。法兰主体具有在轴向上彼此相对的第一端面和第二端面，且包括贯穿所述第一端面和所述第二端面的主体孔，所述主体孔包括内孔和与所述内孔贯通的外孔，所述外孔的孔径大于所述内孔的孔径，其中，所述外孔具有与所述内孔相交的底面和与所述底面相交的内侧面；连接环结构至少部分位于所述法兰主体的外孔中，且包括与所述法兰主体的内孔沿所述轴向贯通的连接环孔；所述连接环结构具有靠近所述外孔的底面的第一外端面、与所述第一外端面相对的第二外端面和与所述第一外端面以及所述第二外端面相交的外侧面，所述连接环结构的外端面与所述外孔的底面贴合，所述连接环结构的外侧面与所述外孔的内侧面贴合；所述连接环结构包括沿所述轴向贯穿所述第一外端面和所述第二外端面的安装孔；所述连接件穿过所述安装孔且与所述安装孔匹配连接以使所述外孔的内侧面与所述连接环结构的外侧面彼此施加沿径向的压力，所述径向垂直于所述轴向。该法兰结构可用于连接柱塞泵的驱动轴与驱动装置的驱动轴，作为柱塞泵的驱动法兰，实现了法兰结构与柱塞泵的驱动轴的无键联结，解决上述通过平键或花键将驱动法兰与柱塞泵的驱动轴连接带来的技术问题。
本公开至少一实施例还提供一种柱塞泵，该柱塞泵包括本公开实施例提供的任意一种法兰结构。
示例性地，图1为本公开一实施例提供的一种法兰结构和柱塞泵的拆解示意图，图4为本公开一实施例提供的一种法兰结构在完成装配的工作状态下的示意图。如图1和图4所示，该法兰结构包括法兰主体1、连接环结构200和连接件4。法兰主体1具有在轴向上彼此相对的第一端面11和第二端面12，且包括贯穿第一端面11和第二端面12的主体孔H0。主体孔H0包括内孔H1和与内孔H1贯通的外孔H2，外孔H2的孔径大于内孔H1的孔径，即内孔H1与外孔H2沿轴向贯通。外孔H2具有与内孔H1相交的底面01和与底面01相交的内侧面02，即底面01是外孔H2在轴向上不与内孔H1重叠的部分的沿轴向背离内孔H1的面，内侧面02围绕轴向。连接环结构200至少部分位于法兰主体1的外孔H2中，且包括与法兰主体1的内孔H1沿轴向贯通的连接环孔。连接环结构200具有靠近外孔H2的底面01的第一外端面201、与第一外端面201相对的第二外端面202、和与第一外端面201以及第二外端面202相交的外侧面203，连接环结构200的外端面与外孔H2的底面01贴合，如图4所示，连接环结构200的外侧面203与外孔H2的内侧面02贴合；连接环结构200包括沿轴向贯穿第一外端面201和第二外端面202的安装孔。连接件4穿过安装孔且与安装孔匹配连接以使外孔H2的内侧面02与连接环结构200的外侧面203彼此施加沿径向的压力，径向垂直于轴向。
例如，该法兰结构可用于连接柱塞泵的驱动轴(下文中称第一驱动轴)与驱动装置的驱动轴(下文中称第二驱动轴)，作为柱塞泵的驱动法兰。可将柱塞泵的第一驱动轴5设置于彼此贯通的法兰主体1的内孔H1和连接环孔中，随着螺栓4的拧紧，内环3和外环2逐渐张紧，连接环结构200的外侧面203与外孔H2的内侧面02之间产生巨大的抱紧力(沿径向的压力)以彼此张紧，且连接环孔的内侧面36与第一驱动轴5之间产生巨大的抱紧力(沿径向的压力)以彼此张紧，从而在柱塞泵的工作过程中，在连接环结构200的外侧面203与外孔H2的内侧面02之间的巨大的摩擦力，且在连接环孔的内侧面36与第一驱动轴5之间产生巨大的摩擦力，通过上述巨大的摩擦力将驱动轴固定以及实现将来自动力源的动力传递给第一驱动轴5。例如动力源 与驱动法兰1的第一端即具有第一端面11的一端连接以驱动法兰结构转动，法兰结构通过连接环孔的内侧面36与驱动轴之间巨大的摩擦力驱动第一驱动轴5转动，从而给柱塞泵提供动力，即通过上述摩擦力传递扭矩，传递负载。如此，实现了法兰结构与柱塞泵的第一驱动轴5的无键联结，解决上述通过平键或花键将驱动法兰与柱塞泵的驱动轴连接带来的技术问题。
如图1所示，例如，驱动法兰1的第一端的第一端面11设计有止口结构和螺纹孔结构，有止口结构和螺纹孔结构配置为与外部动力源的连接，为柱塞泵提供动力。止口结构与外部动力源例如柴油机或电机连接例如与电机的电机轴连接，起到定位的作用；螺纹孔与外部动力源例如柴油机或电机连接例如与电机的电机轴连接，以及与硅油减震器连接，起到固定外部动力源和硅油减震器的作用。
图2为本公开一实施例提供的一种法兰结构的内环和外环的示意图，图3为本公开一实施例提供的一种法兰结构在未完成装配的非工作状态下的示意图。结合图1-4，例如，连接环结构200包括内环2和外环3，外环3套设于内环2的外侧；外环3具有靠近外孔H2的底面01的第一外环端面21和与第一外环端面21相交且沿轴向延伸的外表面22，外环3的第一外环端面21作为连接环结构200的第一外端面201，外环3的外表面22作为连接环结构200的外侧面203。安装孔沿轴向贯穿内环3和外环2，连接件4将内环3与外环2连接并使得内环3与外环2彼此套设且围绕轴向的面24/33之间产生沿径向的压力，以使在加将法兰结构装配于第一驱动轴5上之后的工作状态下，内环3与外环2彼此套设且围绕轴向的面24/33之间彼此张紧。
例如，如图2所示，外环2包括第一外环孔H3和第二外环孔H4，第二外环孔H4位于第一外环孔H3的远离法兰主体1的内孔H1的一侧且与第一外环孔H3沿轴向贯通，且第二外环孔H4的孔径大于第一外环孔H3的孔径；第二外环孔H4具有与第一外环孔H3相交的底面23和与该底面23相交且围绕轴向的内侧面24。例如，内环3包括靠近第二外环孔H4的底面23的第一内环端面31和在轴向上与第一内环端面31相对的第二内环端面32，且具有沿轴向贯穿第一内环端面31和第二内环端面32的内环孔H5，内环孔H5具有围绕轴向且靠近第二外环孔H4的内侧面24的外表面33。内环3至少部分 位于第二外环孔H4中，第二外环孔H4的内侧面24套设于内环孔H5的外表面33上且与内环孔H5的外表面33贴合，并且，内环孔H5与第一外环孔H3沿轴向贯通；连接环孔包括第一外环孔H3和内环孔H5，外环的外表面22构成第一外环孔H3的外表面和第二外环孔H4的外表面。外环2包括贯穿第二外环孔H4的底面23和第一外环端面21的第一连接孔V1，内环包括贯穿第一内环端面31和第二内环端面32的第二连接孔V2，第二连接孔V2与第一连接孔V1贯通；安装孔包括第一连接孔V1和第二连接孔V2，第一外环端面21作为第一外端面201，第二内环端面32作为第二外端面202。连接件4依次穿过第二连接孔V2和第一连接孔V1且与第二连接孔V2和第一连接孔V1匹配连接，以连接内环3与外环2并使第二外环孔H4的内侧面24与内环孔H5的外表面33对彼此施加沿径向的压力，以使在加将法兰结构装配于第一驱动轴5上之后的工作状态下，第二外环孔H4的内侧面24与内环孔H5的外表面33彼此张紧，从而使连接环结构200的外侧面203与外孔H2的内侧面02之间产生巨大的抱紧力以彼此张紧，且连接环孔的内侧面36与第一驱动轴5之间产生巨大的抱紧力以彼此张紧。法兰结构在工作状态下，螺栓4被拧紧。随着螺栓4的拧紧，内环3和外环2逐渐张紧，连接环结构200的外侧面203与外孔H2的内侧面02逐渐张紧，连接环孔的内侧面36与第一驱动轴5的外表面逐渐张紧。
如图3-4所示，例如，第一外环孔H3的孔径、内环孔H5的孔径与法兰主体1的内孔H1的孔径相等。如此，第一驱动轴5可依次穿过法兰主体1的内孔H1、第一外环孔H3和内环孔H5且内环孔H5的内侧壁、第一外环孔H3的内侧壁26和内环孔H5的内侧壁36均与第一驱动轴5的外侧面接触且对第一驱动轴5的外侧面施加巨大的抱紧力。
例如，第一连接孔V1和第二连接孔V2是螺栓孔。例如，第一连接孔V1为螺纹孔，第二连接孔V2为非螺纹孔；连接件4为螺栓，例如高强度拉力螺栓，螺栓4的与第一连接孔V1匹配连接的部分具有螺纹，螺栓4的与第二连接孔V2匹配连接的部分不具有螺纹。如此，当将螺栓4拧紧之后，螺栓4的与第二连接孔V2匹配连接的部分可更好地对第二连接孔V2的与螺栓4接触的内壁施加压力即张力，使得连接环结构200的外侧面203与外孔 H2的内侧面02之间产生巨大的抱紧力以彼此张紧，连接环孔的内侧面36与第一驱动轴5之间产生巨大的抱紧力以彼此张紧，且第二外环孔H4的内侧面24与内环孔H5的外表面33彼此张紧；并且，螺栓4的与第一连接孔V1匹配连接的部分具有螺纹可使螺栓4的与外环2连接的端部强有力地固定，保证外环2和内环3结合的稳定性。
例如，法兰结构包括多个连接件4和与多个连接件4一一对应的多个第一连接孔V1和多个第二连接孔V2，多个连接件4围绕内环孔H5。多个连接件4围绕内环孔H5和第一外环孔H3设置，以进一步增大第二外环孔H4的内侧面24与内环孔H5的外表面33对彼此施加沿径向的压力，从而增大驱动第一驱动轴5转动的摩擦力，提高法兰结构的连接和传动效果，提高法兰结构的可靠性。例如多个连接件4相对于轴向对称分布。例如，相对于轴向对称分布的连接件4的数量至少为4个，以保证法兰结构的可靠性。当然，本公开对连接件4的数量不作具体限定。
结合图2和图3，例如，第二外环孔H4的内侧面24与内环孔H5的外表面33均为锥形面，如此，第二外环孔H4的内侧面24与内环孔H5的外表面33对彼此产生的压力具有沿径向的分力，从而使第二外环孔H4的内侧面24与内环孔H5在径向上彼此张紧(贴合且抱紧)，进一步地，使连接环结构200的外侧面203与外孔H2的内侧面02在径向上彼此张紧，连接环孔的内侧面36与第一驱动轴5在径向上彼此张紧。例如，上述锥形面例如为圆锥面，相比于其他锥面，该圆锥面可以在圆锥面各个位置产生均匀的沿横向的压力。
结合图2和图3，例如，第二外环孔H4和内环孔H5均为锥形孔，并且，在沿轴向且沿从第一外环孔H3到第二外环孔H4的方向上，第二外环孔H4的孔径逐渐增大，且内环孔H5的孔径逐渐增大，以降低内环3与外环2的安装难度，且便于位于内环3的外侧面的远离外环2的端部的第一台阶30(详见下文)且使该第一台阶30与第二外环端面25彼此接触且靠紧。
例如，第二外环孔H4的孔壁具有与第一外环端面21相对的第二外环端面25，内环孔H5的外表面33的远离第二外环孔H4的底面23的一端具有第一台阶30，第一台阶具30有与第二外环端面25彼此相对的第一台阶面34。
图5为图3中的局部L的放大示意图。结合图3和图5，法兰结构在未完成装配的非工作状态下，第二外环孔H4的底面23与内环的第一内环端面31之间存在第一缝隙(第一缝隙指图3中第二外环孔H4的底面23与内环的第一内环端面31之间的空白部分)，第二外环端面25与第一台阶面34之间存在第二缝隙(第一缝隙指图3中，第二外环端面25与第一台阶面34之间的空白部分)，第一缝隙沿轴向的尺寸h1与第二缝隙沿轴向的尺寸h2相等，例如第二外环孔H4的内侧面24与内环孔H5的外表面33这两个锥面与轴向的夹角相等且沿轴向的长度相等，法兰结构在完成装配的工作状态下，螺栓4拧紧，在螺栓4拧紧的作用下，第二外环孔H4的底面23与内环的第一内环端面31贴合，且第二外环端面25与第一台阶面34贴合，即，第二外环孔H4的底面23与内环的第一内环端面31之间不存在缝隙，且第二外环端面25与第一台阶面34之间不存在缝隙，从而，第二外环孔H4的内侧面24与内环孔H5的外表面33这两个锥面彼此贴合且张紧配合，并且在轴向上的两端均可与相应的抵挡面接触且压紧，即，第二外环孔H4的底面23与内环的第一内环端面31贴合且压紧，第二外环端面25与第一台阶面34贴合且压紧，利于法兰结构工作的可靠性和稳定性。第一台阶30作为限位结构，该设计保证了内环3和外环2的锥面可以实现定量的涨紧程度，满足所需的使用要求。
例如，如图2所示，外环2具有第一切口C1，第一切口C1沿轴向延伸并将外环2的围绕轴向的环体断开；内环具有第二切口C2，第二切口C2沿延伸并将内环3的围绕轴向的环体断开。第一切口C1和第二切口C2用于调节内环3和外环2在张紧过程中的变形量。
本公开至少一实施例还提供一种柱塞泵，该柱塞泵包括本公开实施例提供的任意一种法兰结构。
示例性地，图6A为本公开一实施例提供的一种柱塞泵的动力端的示意图，图6B为将液力端与图6A所示的动力端结合后的柱塞泵的示意图。如图6A-6B所示，柱塞泵包括动力端6和液力端7。动力端6包括驱动装置和传动机构61，第一驱动轴5与传动机构61连接；驱动装置包括第二驱动轴，法兰主体1的第一端具有第一端面11，法兰主体1的第二端具有第二端面12，第二驱动轴的端部位于法兰主体1的第一端且位于外孔H2中，与法兰结构 连接例如与第一驱动轴5的端部连接，且第二驱动轴配置为可转动以驱动第一驱动轴5转动。柱塞位于液力端(未示出)的工作腔体中，传动机构61的靠近液力端7的一端与柱塞连接，柱塞在驱动装置和传动机构61的驱动下在工作腔体中做往复运动，以实现设置有凡尔体阀的工作腔体的工作容积变化以及凡尔体阀的开与关，实现高压液体例如油体的泵送。例如第一驱动轴5转动以驱动柱塞运动。如图6B所示，动力端6包括多个动力端缸体60，液力端7包括多个液力端缸体70，多个液力端缸体70与多个动力端缸体60一一对应。每个液力端缸体70包括工作腔体和位于工作腔体中的柱塞。
需要说明的是，这里只示出传动机构的与柱塞连接的传动轴61，以此来示意性代表传动机构，传动机构的其他结构未示出，可根据本领域常规技术进行设计。
图6B以五缸柱塞泵作为示例，即动力端6包括五个动力端缸体60，液力端7包括五个液力端缸体70。当然，本公开实施例对柱塞泵的动力端缸体和液力端缸体的数量不作限定。
结合图4和图2，第一驱动轴5的端部位于法兰主体1的第一端且依次穿过法兰结构的内孔H1和连接环孔，例如依次穿过法兰结构的内孔H1、外环2的第一外环孔H3以及内环3的内环孔H5，内孔H1的围绕轴向的内表面以及连接环孔的围绕轴向的内表面均与第一驱动轴5的外侧面接触且对彼此施加沿径向的压力以固定第一驱动轴5，具体的工作过程如之前的实施例中所述，在此不再重复。例如，连接环孔的内表面与第一驱动轴5的外侧面对彼此施加的压力大于内孔H1的内表面100与驱动轴的侧面对彼此施加的压力。
例如，法兰主体1的内孔H1位于法兰主体1的第一端，法兰主体1的内孔H1位于法兰主体1的第二端；第一驱动轴5包括第二台阶50，第二台阶具有朝向第二端面12的第二台阶面51，第二台阶面51与第二端面12接触，以通过第二台阶面51对法兰主体1起到限位作用。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。

Claims (14)

  1. 一种法兰结构，包括：
    法兰主体，具有在轴向上彼此相对的第一端面和第二端面，且包括贯穿所述第一端面和所述第二端面的主体孔，其中，所述主体孔包括内孔和与所述内孔贯通的外孔，所述外孔的孔径大于所述内孔的孔径，其中，所述外孔具有与所述内孔相交的底面和与所述底面相交的内侧面；
    连接环结构，至少部分位于所述法兰主体的外孔中，且包括与所述法兰主体的内孔沿所述轴向贯通的连接环孔，其中，所述连接环结构具有靠近所述外孔的底面的第一外端面、与所述第一外端面相对的第二外端面和与所述第一外端面以及所述第二外端面相交的外侧面，所述连接环结构的外端面与所述外孔的底面贴合，所述连接环结构的外侧面与所述外孔的内侧面贴合；所述连接环结构包括沿所述轴向贯穿所述第一外端面和所述第二外端面的安装孔；以及
    连接件，所述连接件穿过所述安装孔且与所述安装孔匹配连接以使所述外孔的内侧面与所述连接环结构的外侧面彼此施加沿径向的压力，所述径向垂直于所述轴向。
  2. 根据权利要求1所述的法兰结构，其中，所述连接环结构包括内环和外环，所述外环套设于所述内环的外侧；
    所述外环具有靠近所述外孔的底面的第一外环端面和与所述第一外环端面相交且沿所述轴向延伸的外表面，所述外环的第一外环端面作为所述连接环结构的第一外端面，所述外环的外表面作为所述连接环结构的外侧面；
    所述安装孔沿所述轴向贯穿所述内环和所述外环，所述连接件将所述内环与所述外环连接并使得所述外环与所述外环彼此套设的面之间产生沿所述径向的压力。
  3. 根据权利要求2所述的法兰结构，其中，
    所述外环包括第一外环孔和第二外环孔，所述第二外环孔位于所述第一外环孔的远离所述法兰主体的内孔的一侧且与所述第一外环孔沿所述轴向贯通，且所述第二外环孔的孔径大于所述第一外环孔的孔径；所述第二外环孔 具有与所述第一外环孔相交的底面和与该底面相交的内侧面；
    所述内环包括靠近所述第二外环孔的底面的第一内环端面和在所述轴向上与所述第一内环端面相对的第二内环端面，且具有沿所述轴向贯穿所述第一内环端面和所述第二内环端面的内环孔，所述内环孔具有围绕所述轴向且靠近所述第二外环孔的内侧面的外表面；
    所述内环至少部分位于所述第二外环孔中，所述第二外环孔的内侧面套设于所述内环孔的外表面上且与所述内环孔的所述外表面贴合，并且，所述内环孔与所述第一外环孔沿所述轴向贯通；所述连接环孔包括所述第一外环孔和所述内环孔，所述外环的外表面构成所述第一外环孔的外表面和所述第二外环孔的外表面；
    所述外环包括贯穿所述第二外环孔的底面和所述第一外环端面的第一连接孔，所述内环包括贯穿所述第一内环端面和所述第二内环端面的第二连接孔，所述第二连接孔与所述第一连接孔贯通；所述安装孔包括所述第一连接孔和所述第二连接孔，所述第一外环端面作为所述第一外端面，所述第二内环端面作为所述第二外端面；所述连接件依次穿过所述第二连接孔和所述第一连接孔且与所述第二连接孔和所述第一连接孔匹配连接，以连接所述内环与所述外环并使所述第二外环孔的内侧面与所述内环孔的外表面对彼此施加沿所述径向的压力。
  4. 根据权利要求3所述的法兰结构，其中，所述第一外环孔的孔径、所述内环孔的孔径与所述法兰主体的内孔的孔径相等。
  5. 根据权利要求3或4所述的法兰结构，其中，所述第一连接孔为螺纹孔，所述第二连接孔为非螺纹孔；
    所述连接件为螺栓，所述螺栓的与所述第一连接孔匹配连接的部分具有螺纹，所述螺栓的与所述第二连接孔匹配连接的部分不具有螺纹。
  6. 根据权利要求3-5任一所述的法兰结构，其中，所述法兰结构包括多个所述连接件和与所述多个连接件一一对应的多个所述第一连接孔和多个所述第二连接孔，所述多个连接件围绕所述内环孔。
  7. 根据权利要求3的法兰结构，其中，所述第二外环孔的内侧面与所述内环孔的外表面均为锥形面。
  8. 根据权利要求7所述的法兰结构，其中，所述第二外环孔和所述内环孔均为锥形孔；
    在沿所述轴向且沿从所述第一外环孔到所述第二外环孔的方向上，所述第二外环孔的孔径逐渐增大，且所述内环孔的孔径逐渐增大。
  9. 根据权利要求3-8任一所述的法兰结构，其中，所述第二外环孔的孔壁具有与所述第一外环端面相对的第二外环端面，所述内环孔的外表面的远离所述第二外环孔的底面的一端具有第一台阶，所述第一台阶具有与所述第二外环端面彼此相对的第一台阶面；
    所述法兰结构在未完成装配的非工作状态下，所述第二外环孔的底面与所述内环的第一内环端面之间存在第一缝隙，所述第二外环端面与所述第一台阶面之间存在第二缝隙，所述第一缝隙沿所述轴向的尺寸与所述第二缝隙沿所述轴向的尺寸相等；
    所述法兰结构在完成装配的工作状态下，所述第二外环孔的底面与所述内环的第一内环端面贴合，所述第二外环端面与所述第一台阶面贴合。
  10. 根据权利要求3-9任一所述的法兰结构，其中，所述外环具有第一切口，所述第一切口沿所述轴向延伸并将所述外环的围绕所述轴向的环体断开；
    所述内环具有第二切口，所述第二切口沿所述延伸并将所述内环的围绕所述轴向的环体断开。
  11. 一种柱塞泵，包括权利要求1-10任一所述的法兰结构。
  12. 根据权利要求11所述的柱塞泵，包括：
    柱塞；
    第一驱动轴，配置为可转动以驱动所述柱塞运动，其中，所述法兰主体的第一端具有所述第一端面，所述法兰主体的第二端具有所述第二端面，所述第一驱动轴的端部位于所述法兰主体的第一端且所述第一驱动轴依次穿过所述法兰结构的所述内孔和所述连接环孔，所述内孔的围绕所述轴向的内表面以及所述连接环孔的围绕所述轴向的内表面均与所述第一驱动轴的外侧面接触且对彼此施加沿径向的压力以固定所述第一驱动轴；以及
    驱动装置，包括第二驱动轴，其中，所述第二驱动轴的端部位于所述法 兰主体的第一端且位于所述法兰主体的所述外孔中，与所述法兰结构连接，且所述第二驱动轴配置为可转动以驱动所述法兰结构以及所述第一驱动轴转动。
  13. 根据权利要求12所述的柱塞泵，其中，所述连接环孔的内表面与所述第一驱动轴的外侧面对彼此施加的压力大于所述法兰主体的所述内孔的内表面与所述第一驱动轴的外侧面对彼此施加的压力。
  14. 根据权利要求12或13所述的柱塞泵，其中，所述法兰主体的内孔位于所述法兰主体的第二端；
    所述第一驱动轴包括第二台阶，所述第二台阶具有朝向所述第二端面的第二台阶面，所述第二台阶面与所述第二端面接触。
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5457065A (en) * 1977-10-17 1979-05-08 Tsubakimoto Chain Co Shaft ans boss fastening device
CN101936342A (zh) * 2010-08-31 2011-01-05 溧阳市威联传动机械有限公司 一种单向精密膜片弹性联轴器
CN206860701U (zh) * 2017-05-19 2018-01-09 宁德时代电机科技有限公司 一种集成组合式密封圈的胀套式联轴器装置
CN207297663U (zh) * 2017-09-12 2018-05-01 玉环飞特机械制造有限公司 一种锁紧联轴器
CN207935308U (zh) * 2018-01-15 2018-10-02 苏州朗高电机有限公司 一种新能源汽车的传动法兰结构
CN208565295U (zh) * 2018-06-28 2019-03-01 广州精传科技有限公司 止口式胀套法兰
CN209294282U (zh) * 2018-11-02 2019-08-23 武汉正通传动技术有限公司 风力发电机组用高速大扭矩联轴器
CN210889802U (zh) * 2019-09-16 2020-06-30 耐力股份有限公司 一种马达试验用半联轴器及联轴器
CN112727721A (zh) * 2021-02-06 2021-04-30 秦皇岛诚捷科技有限公司 一种永磁盘式封闭型斜盘式轴向柱塞泵及其工作方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2405327A1 (de) * 1974-02-05 1975-08-07 Peter Oskar E Spannsatz zur nabenbefestigung aus konischen spannringen mit zentrieransatz
CN105370744A (zh) * 2014-08-11 2016-03-02 孙翠翠 一种双向精密膜片弹性联轴器
CN104405785A (zh) * 2014-11-28 2015-03-11 杭庆永 一种挠性联轴器
CN104533741A (zh) * 2014-12-30 2015-04-22 南京萨伯工业设计研究院有限公司 伺服控制变量柱塞泵及其控制方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5457065A (en) * 1977-10-17 1979-05-08 Tsubakimoto Chain Co Shaft ans boss fastening device
CN101936342A (zh) * 2010-08-31 2011-01-05 溧阳市威联传动机械有限公司 一种单向精密膜片弹性联轴器
CN206860701U (zh) * 2017-05-19 2018-01-09 宁德时代电机科技有限公司 一种集成组合式密封圈的胀套式联轴器装置
CN207297663U (zh) * 2017-09-12 2018-05-01 玉环飞特机械制造有限公司 一种锁紧联轴器
CN207935308U (zh) * 2018-01-15 2018-10-02 苏州朗高电机有限公司 一种新能源汽车的传动法兰结构
CN208565295U (zh) * 2018-06-28 2019-03-01 广州精传科技有限公司 止口式胀套法兰
CN209294282U (zh) * 2018-11-02 2019-08-23 武汉正通传动技术有限公司 风力发电机组用高速大扭矩联轴器
CN210889802U (zh) * 2019-09-16 2020-06-30 耐力股份有限公司 一种马达试验用半联轴器及联轴器
CN112727721A (zh) * 2021-02-06 2021-04-30 秦皇岛诚捷科技有限公司 一种永磁盘式封闭型斜盘式轴向柱塞泵及其工作方法

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