CN214577562U - Reciprocating water injection pump convenient to maintain fast - Google Patents

Abstract

The utility model relates to a reciprocating type water injection pump convenient to maintain fast, be equipped with the plunger in the pump head central pore, the pump head left end is fixed with the filler seat, the filler seat inner chamber is equipped with the hand-basket, the middle section of plunger passes from the hand-basket centre bore, the hand-basket outer port is equipped with the hand-basket flange and presses on the outer terminal surface of filler seat, the port is equipped with the interior flange of hand-basket in the hand-basket, it has the multichannel to pack to fill in the annular space between hand-basket and the plunger, the innermost filler supports and leans on the interior step of the interior flange of hand-basket, the right-hand member of the interior flange of hand-basket has pressed the pressure spring of packing, the left end of packing is equipped with the gland that compresses tightly the filler, gland connects on the left end external screw thread of filler seat soon. The basket is surrounded by two halves of symmetry and forms, and the outer terminal surface of two halves basket flange is equipped with respectively along the basket screw of axial extension, and two basket screws use the surrounding interface to set up as central symmetry and lie in the same root diameter of basket. The water injection pump has the advantages of small disassembly range when leakage is overhauled, time and labor saving and improvement of operation safety.

Description

Reciprocating water injection pump convenient to maintain fast

Technical Field

The utility model relates to a reciprocating type water injection pump especially relates to a reciprocating type water injection pump convenient to maintain fast, belongs to oil field water injection pump technical field.

Background

The plunger pump is the main equipment of oil field water injection at present, mainly includes power end (core position) and hydraulic end, and the power end mainly comprises parts such as crankcase, bent axle, axle bush, connecting rod, cross head, intermediate lever and oil blanket, and the hydraulic end mainly includes the pump head of plunger pump, and the intermediate lever of power end is connected with the plunger of hydraulic end, and the connection point is arranged in the intermediate box body between power end and the hydraulic end, and the upper end of intermediate box body is uncovered to do the usefulness of overhauing.

The crank throw of the crankshaft drives the big end of the connecting rod to do circular motion, the small end of the connecting rod drives the crosshead to do left-right reciprocating motion through the connecting rod pin, the crosshead drives the plunger of the pump head to do reciprocating motion through the intermediate rod, and the reciprocating motion of the plunger enables the pump head to complete water injection. The middle section of plunger is arranged in the filler seat, and it has the multichannel to pack in the filler seat and realizes sealing with the plunger, and after operation a period, the filler can take place wearing and tearing, and wearing and tearing reach the certain degree and can take place the seepage, must stop the pump this moment and overhaul, the filler of renewal. If the change of packing is untimely, can take place strong thorn when serious, lead to a large amount of water injection to gush into middle box, the seal receptacle between submergence intermediate lever and the crankcase, in the water injection infiltration crankcase, lead to lubricating oil emulsification inefficacy, the discovery can not cause the bigger loss of equipment in time.

Because the filler is arranged in the deep cavity of the filler seat, the filler is easy to press in and difficult to take out, only the upper part of the filler can be operated by maintainers, and the two sides of the filler are walls of the middle box body or adjacent plungers, so that the space is very limited. The middle rod is arranged in front of the axial direction, and no space exists, so that the work of taking the filler is time-consuming and labor-consuming. Often the parts in the peripheral space need to be dismantled in a large number to the operative employee, just can operate, and the inner chamber of filler seat still can't be looked directly to eyes, only can rely on the sensation on the hand to get the filler by hook. Even so, the packing of packing seat box deepest still is difficult to take out, leads to easily that old packing to get unclean just begins to impress new packing, has influenced sealed effect, has also shortened the maintenance cycle. Every time, after the filler is replaced, peripheral parts are required to be restored and installed, the workload is high, the maintenance is frequent, and the production efficiency of the oil field is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that exists among the prior art, provide a reciprocating type water injection pump convenient to maintain fast, when the seepage was overhauld, the dismantlement scope was little, and labour saving and time saving improves the security of operation, can improve the maintenance efficiency of water injection pump greatly.

In order to solve the technical problem, the reciprocating water injection pump convenient for rapid maintenance of the utility model comprises a power end, a middle box body and a hydraulic end in sequence from left to right, the hydraulic end comprises a pump head, a plunger is arranged in a central pore passage of the pump head, a filler seat is fixed at the left end of the pump head, a basket is arranged in an inner cavity of the filler seat, the middle section of the plunger passes through a central hole of the basket, an outer port of the basket is provided with an outward-turned basket flange, the basket flange is pressed on the outer end surface of the filler seat, an inner port of the basket is provided with an inward-folded basket inner flange, a plurality of fillers are filled in an annular space between the basket and the plunger, the innermost filler is supported against an inner step of the basket inner flange, a pressure spring is pressed at the right end of the basket inner flange, a filler gland is arranged at the left end of the filler, the packing gland is screwed on the external thread at the left end of the packing seat.

Compared with the prior art, the utility model discloses following beneficial effect has been obtained: set up the hand-basket in the inner chamber of packing seat, the interior step of hand-basket inner flange provides the right side location for each packing, and the packing pressure spring provides thrust left, and gland compresses tightly the packing from the left side, and the hand-basket flange both can prevent that the hand-basket from sinking into the packing seat completely, is convenient for again take out the hand-basket. All the fillers are placed in the inner cavity of the basket, when the fillers are replaced, the whole basket can be pulled out only by disassembling the filler gland, all the fillers are integrally taken out along with the filler gland, the fillers do not need to be drawn out from the deep cavity, the disassembly range is small, and the influence of peripheral parts is small.

As the utility model discloses an improvement, the hand-basket is enclosed by the two halves of symmetry and forms, and the outer terminal surface of two halves hand-basket flange is equipped with respectively along axially extended hand-basket screw, and two hand-basket screws use to enclose the interface and set up and be located the same root diameter of hand-basket as central symmetry. The basket is divided into two halves, so that the basket can be conveniently separated from two sides of the plunger and does not need to be sleeved in from the end head of the plunger, and a basket screw hole in the basket flange is convenient for screwing in a basket screw, so that a force application point is provided for pulling out the basket.

As a further improvement, the right-hand member of packing pressure spring supports in the left step of little letter body, little letter body inlay in the central pore of pump head, the feed liquor spring has been pressed to the right step of little letter body, the left end at the feed liquor valve block is pressed to the right-hand member of feed liquor spring, the right-hand member of feed liquor valve block supports and leans on the valve body assembly, the right-hand member of valve body assembly supports and leans on the valve body end cap, the right-hand member of valve body end cap is fixed the centre bore right-hand member of pump head. The small box body provides a drawing and inserting space for the plunger and provides a supporting space for the packing pressure spring and the liquid inlet spring, when the plunger moves leftwards, the inner cavity of the small box body generates negative pressure, the liquid inlet valve plate is opened, and the valve body assembly finishes water absorption; when the plunger moves towards the driven part, the liquid inlet valve plate is closed, and the valve body assembly completes water injection.

As a further improvement of the utility model, a plunger convex ring is arranged at the left end of the plunger; the right-hand member head of intermediate lever is equipped with the protruding circle of intermediate lever, the protruding circle of intermediate lever passes through the square joint interconnect with the plunger protruding circle, the square joint is the half structure through flange and screw interconnect, the protruding circle of intermediate lever and plunger are located the circular inner chamber of square joint jointly. The connecting square clamp clamps the middle rod convex ring and the plunger convex ring in a self circular inner cavity together, so that the middle rod can drive the plunger to horizontally reciprocate, but torque is not transmitted; the connecting square clamp is mutually connected through a flange and a screw, so that the connecting and the disassembling during the overhauling are very convenient during the work.

As a further improvement, be equipped with the dish that blocks water on the right part circumference of intermediate lever, the dish that blocks water is located the left side of connecting the square card, and the external diameter that blocks water the dish is greater than more than the twice of intermediate lever diameter. The water blocking disc is isolated at the right end of the middle rod, and a water film from the pump head cannot cross the water blocking disc to reach the middle section of the middle rod easily, so that a first water blocking device is formed.

As the utility model discloses a further improvement, during the dismantlement, connect the basket screw in two basket screws respectively soon, two jaw left sides that the forked sled board was pushed down respectively to the screwhead of two basket screws, the upper end suit of forked sled board is on can dismantling the screw rod, can dismantle the both ends of screw rod and support and be in between the wallboard about middle box, the right side of forked sled board is supported and is leaned on there is the kicking block, the kicking block suit is in can dismantle on the screw rod, the right side of kicking block is supported and is leaned on there being big nut, big nut connects soon can dismantle on the screw rod. During the dismantlement, will dismantle the screw rod top between the wallboard about the middle box, maintain the end, can will dismantle the screw rod and unload, to the big nut of left turn, big nut is pushing away the kicking block and is moving left, and the kicking block is pushing up the upper portion translation left of Y-shaped sled board, and two forks of Y-shaped sled board lower part are taken out left through two basket screws pulling baskets, avoid artifical the danger that prizes and arouse the injury.

As a further improvement, the middle section of the detachable screw rod is provided with a positive and negative thread adjusting screw sleeve, and the two ends of the detachable screw rod are respectively provided with an amplified screw rod support leg. The length that can dismantle the screw rod can be adjusted to positive and negative tooth regulation swivel nut, is convenient for push up between the wallboard about middle box, dismantlement when also being convenient for, and the screw rod stabilizer blade can increase the lifting surface area who can dismantle the screw rod both ends, makes the support that can dismantle the screw rod more stable.

As a further improvement of the utility model, the two fork heads of the fork-shaped prying plate are respectively provided with a waist-shaped groove for the basket screw to be embedded and the lower end of the waist-shaped groove is opened. The kidney-shaped groove is embedded into the screw of the basket, and provides an adjustable space for the supporting height and the position of the detachable screw rod.

As a further improvement of the utility model, the top of the fork-shaped prying plate is provided with a handle extending upwards. The handle not only is convenient for an operator to hold, but also can pry the lifting basket by taking the top block as a fulcrum through the handle, so that the lifting basket is pried by means of external force when being clamped.

Drawings

The invention will be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration purposes only and are not intended to limit the invention.

Fig. 1 is a perspective view of the reciprocating water injection pump convenient for quick maintenance.

Figure 2 is the front view of the reciprocating water injection pump convenient for quick maintenance of the present invention.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a three-dimensional enlarged view of the pump head of the present invention.

Fig. 5 is a half perspective view of the basket of the present invention.

Fig. 6 is an enlarged view of the pump head of fig. 2.

Fig. 7 is a working state diagram when the lifting basket is disassembled.

Fig. 8 is a working state diagram of the fork-shaped pry plate.

In the figure: 1. a pump head; 2. a plunger; 2a, plunger convex ring; 3. a packing gland; 4. a filler seat; 5. lifting a basket; 5a, a basket flange; 5b, lifting an inner flange of the basket; 5c, a screw hole of the basket; 6. a filler; 7. a packing compression spring; 8. a small letter body; 9. a liquid inlet spring; 10. a liquid inlet valve plate; 11. a valve body assembly; 12. a valve body plug; 13. an intermediate lever; 13a, a middle rod convex ring; 14. an oil seal box; 15. a water blocking tray; 16. connecting a square card; 17. a crankcase; 18. a crankshaft; 19. a connecting rod; 20. a link pin; 21. a crosshead; 22. a cylinder liner; 23. the screw rod can be disassembled; screw foot 23 a; 24. the positive and negative teeth adjusting screw sleeve; 25. a large nut; 26. a top block; 27. a fork-shaped pry plate; kidney slot 27 a; 27b, a handle; 28. a basket screw.

Detailed Description

As shown in fig. 1 to 6, the utility model discloses reciprocating water injection pump convenient to maintain fast includes power end, middle box and hydraulic end from the left hand right side in proper order. The power end includes crankcase 17, install bent axle 18 in the crankcase 17, the one end of bent axle 18 stretches out outside crankcase 17 and installs the belt pulley, connecting rod 19 is installed respectively to the crank punishment of bent axle 18, the tip of each connecting rod 19 articulates through connecting rod round pin 20 respectively has cross head 21, cross head 21 is arranged in cylinder liner 22 and can be followed cylinder liner 22 and make horizontal reciprocating motion, it has a plurality of cylinder liner oilholes that radially link up to distribute on the circumference of cylinder liner 22, the connecting rod has been connect with the intermediate lever in the central screw thread seat of cross head 21 right-hand member, the middle section of intermediate lever is worn out from oil blanket box 14, oil blanket box 14 is fixed on the right wall of crankcase 17, the right-hand member drive fluid end of intermediate lever.

The hydraulic end comprises a pump head 1, a plunger 2 is arranged in a central hole channel of the pump head 1, a packing seat 4 is fixed at the left end of the pump head 1, a basket 5 is arranged in an inner cavity of the packing seat 4, the middle section of the plunger 2 penetrates through a central hole of the basket 5, an outward-turned basket flange 5a is arranged at an outer port of the basket 5, the basket flange 5a is pressed on the outer end face of the packing seat 4, an inward-turned basket inner flange 5b is arranged at an inner port of the basket 5, a plurality of packing 6 are filled in an annular space between the basket 5 and the plunger 2, the innermost packing 6 abuts against an inner step of the basket inner flange 5b, a packing pressure spring 7 is pressed at the right end of the basket inner flange 5b, a packing gland 3 for pressing the packing 6 is arranged at the left end of the packing 6, and the packing gland 3 is screwed on an external thread at the left end of the packing seat 4.

Add basket 5 in the inner chamber of packing seat 4, the interior step of basket inner flange 5b provides the right side location for each packing 6, and packing pressure spring 7 provides thrust left, and gland 3 compresses tightly packing 6 from the left side, and basket flange 5a both can prevent that basket 5 from sinking into packing seat 4 completely, is convenient for again take out basket 5. All the fillers 6 are placed in the inner cavity of the basket 5, when the fillers 6 are replaced, the basket 5 can be integrally drawn out only by disassembling the packing gland 3, all the fillers 6 are integrally taken out along with the disassembly, the fillers 6 do not need to be drawn out from the deep cavity, the disassembly range is small, and the influence of peripheral parts is small.

The basket 5 is surrounded by two symmetrical halves, basket screw holes 5c extending along the axial direction are respectively arranged on the outer end faces of the two halves of the basket flange 5a, and the two basket screw holes 5c are symmetrically arranged by taking the surrounding interface as the center and are positioned on the same diameter of the basket 5. The basket 5 is divided into two halves, so that the basket can be conveniently separated from two sides of the plunger 2 and does not need to be sleeved in from the end of the plunger 2, and the basket screw holes 5c on the basket flange 5a are convenient for screwing in basket screws 28, so that a force point is provided for the extraction of the basket 5.

The right-hand member of packing pressure spring 7 supports in the left step of little letter 8, and little letter 8 inlays in the central hole of pump head 1, and it has feed liquor spring 9 to press on the right step of little letter 8, and feed liquor spring 9's right-hand member is pressed at the left end of feed liquor valve block 10, and the right-hand member of feed liquor valve block 10 supports and leans on valve body assembly 11, and the right-hand member of valve body assembly 11 supports and leans on valve body end cap 12, and the right-hand member of valve body end cap 12 is fixed at the centre bore right-hand member of pump head 1. The small box body 8 provides a drawing and inserting space for the plunger 2 and provides a supporting space for the packing pressure spring 7 and the liquid inlet spring 9, when the plunger 2 moves leftwards, the inner cavity of the small box body 8 generates negative pressure, the liquid inlet valve plate 10 is opened, and the valve body assembly 11 finishes water absorption; when the plunger 2 moves towards the first direction, the liquid inlet valve plate 10 is closed, and the valve body assembly 11 completes water injection.

A plunger convex ring 2a is arranged at the left end of the plunger 2; the right end of the middle rod 13 is provided with a middle rod convex ring 13a, the middle rod convex ring 13a and the plunger convex ring 2a are connected with each other through a connecting square clamp 16, the connecting square clamp 16 is a half structure which is connected with each other through a flange and a screw, and the middle rod convex ring 13a and the plunger convex ring 2a are located in a circular inner cavity of the connecting square clamp 16. The connecting square clamp 16 clamps the middle rod convex ring 13a and the plunger convex ring 2a together in a circular inner cavity of the connecting square clamp, so that the middle rod 13 can drive the plunger 2 to horizontally reciprocate, but torque is not transmitted; the connecting square clamps 16 are connected with each other through flanges and screws, so that the connecting and the disassembling during the overhauling are very convenient during the work.

The right circumference of the middle rod 13 is provided with a water blocking disc 15, the water blocking disc 15 is positioned on the left side of the connecting square clamp 16, and the outer diameter of the water blocking disc 15 is more than twice of the diameter of the middle rod. The water blocking disc 15 is isolated at the right end of the intermediate rod 13, and a water film from the pump head 1 is difficult to cross the water blocking disc 15 to reach the middle section of the intermediate rod 13, so that a first water blocking device is formed.

As shown in fig. 7 and 8, during disassembly, basket screws 28 are screwed in the two basket screw holes 5c respectively, screw heads of the two basket screws 28 press the left sides of two fork heads of the fork-shaped pry plate 27 respectively, the upper end of the fork-shaped pry plate 27 is sleeved on the detachable screw 23, two ends of the detachable screw 23 are supported between the left wall plate and the right wall plate of the middle box body, the right side of the fork-shaped pry plate 27 is abutted against a top block 26, the top block 26 is sleeved on the detachable screw 23, the right side of the top block 26 is abutted against a large nut 25, and the large nut 25 is screwed on the detachable screw 23. During the dismantlement, will dismantle screw rod 23 and push up between the wallboard about the middle box, maintain the end, can dismantle screw rod 23 can dismantle, to the large nut 25 of turning left, large nut 25 is pushing away kicking block 26 and is moving left, and kicking block 26 is pushing against the upper portion translation left of forked sled board 27, and the two forks head of forked sled board 27 lower part draws basket 5 left through two basket screws 28 pulling and takes out, avoids the danger that manual prying arouses the injury.

The middle section of the detachable screw rod 23 is provided with a positive and negative tooth adjusting threaded sleeve 24, and two ends of the detachable screw rod 23 are respectively provided with an enlarged screw rod supporting leg 23a. The length that can dismantle screw rod 23 can be adjusted to screw sleeve 24 is adjusted to positive and negative tooth, is convenient for push up between the wallboard about the middle box, dismantlement when also being convenient for to accomplish, and screw rod stabilizer blade 23a can increase the lifting surface area who can dismantle screw rod 23 both ends, makes the support that can dismantle screw rod 23 more stable.

The two prongs of the fork-shaped pry plate 27 are respectively provided with a waist-shaped groove 27a into which the basket screw 28 is inserted and which is open at the lower end. The slots 27a are embedded in the basket screws 28 to provide adjustable space for the support height and position of the removable screw 23.

The top of the fork-shaped pry plate 27 is provided with an upwardly extending handle 27b. The handle 27b is convenient for an operator to hold and can pry the lifting basket 5 through the handle 27b by taking the top block 26 as a fulcrum, so that the lifting basket 5 is pried by external force when being clamped.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention. The undescribed technical features of the present invention can be realized by or using the prior art, and are not described herein again.

Claims (9)

1. The utility model provides a reciprocating type water injection pump convenient to maintain fast includes power end, middle box and fluid end in proper order from the left hand right side, fluid end includes the pump head, be equipped with plunger, its characterized in that in the central hole of pump head: the pump head comprises a pump head, and is characterized in that a packing seat is fixed at the left end of the pump head, a basket is arranged in an inner cavity of the packing seat, the middle section of a plunger penetrates through a central hole of the basket, an outward-turned basket flange is arranged at an outer port of the basket, the basket flange is pressed on an outer end face of the packing seat, an inward-turned basket inner flange is arranged at an inner port of the basket, a plurality of packings are filled in an annular space between the basket and the plunger, the innermost packing abuts against an inner step of the basket inner flange, a packing pressure spring is pressed at the right end of the basket inner flange, a packing gland for compressing the packing is arranged at the left end of the packing, and the packing gland is screwed on an external thread at the left end of the packing seat.

2. The reciprocating water injection pump facilitating rapid maintenance according to claim 1, wherein: the lifting basket is formed by two symmetrical halves in a surrounding mode, the outer end faces of two half lifting basket flanges are respectively provided with lifting basket screw holes extending along the axial direction, and the two lifting basket screw holes are symmetrically arranged by taking a surrounding interface as a center and are located on the same diameter of the lifting basket.

3. The reciprocating water injection pump facilitating rapid maintenance according to claim 1, wherein: the right-hand member of packing pressure spring supports in the left step of little letter body, little letter body inlay in the central hole of pump head, the right step of little letter body is gone up to press has the feed liquor spring, the right-hand member of feed liquor spring is pressed at the left end of feed liquor valve block, the right-hand member of feed liquor valve block supports and leans on the valve body assembly, the right-hand member of valve body assembly supports and leans on the valve body end plug, the right-hand member of valve body end plug is fixed the centre bore right-hand member of pump head.

4. The reciprocating water injection pump facilitating rapid maintenance according to claim 1, wherein: a plunger convex ring is arranged at the left end head of the plunger; the right-hand member head of intermediate lever is equipped with the protruding circle of intermediate lever, the protruding circle of intermediate lever passes through the square joint interconnect with the plunger protruding circle, the square joint is the half structure through flange and screw interconnect, the protruding circle of intermediate lever and plunger are located the circular inner chamber of square joint jointly.

5. The reciprocating water injection pump facilitating rapid maintenance according to claim 4, wherein: the water blocking device is characterized in that a water blocking disc is arranged on the right circumference of the middle rod and located on the left side of the connecting square clamp, and the outer diameter of the water blocking disc is more than two times larger than the diameter of the middle rod.

6. The reciprocating water injection pump facilitating rapid maintenance according to claim 2, wherein: during the dismantlement, connect the basket screw in two basket screws respectively soon, two jaw left sides that forked sled board was pushed down respectively to the screwhead of two basket screws, the upper end suit of forked sled board is on can dismantling the screw rod, can dismantle the both ends of screw rod and support between the wallboard about the middle box, the right side of forked sled board is supported and is leaned on there is the kicking block, the kicking block suit is in can dismantling on the screw rod, the right side of kicking block is supported and is leaned on there being big nut, big nut connects soon can dismantle on the screw rod.

7. The reciprocating water injection pump facilitating rapid maintenance of claim 6, wherein: the middle section of the detachable screw rod is provided with a positive and negative tooth adjusting threaded sleeve, and two ends of the detachable screw rod are respectively provided with an amplified screw rod supporting leg.

8. The reciprocating water injection pump facilitating rapid maintenance of claim 6, wherein: two fork heads of the fork-shaped prying plate are respectively provided with a kidney-shaped groove for embedding a basket lifting screw and having an opening at the lower end.

9. The reciprocating water injection pump facilitating rapid maintenance of claim 6, wherein: and a handle extending upwards is arranged at the top of the fork-shaped pry plate.

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