CN200961570Y

CN200961570Y - Five-cylinder pump case

Info

Publication number: CN200961570Y
Application number: CN 200620099178
Authority: CN
Inventors: 游艇; 李蓉; 周向东; 王荣修; 李德清
Original assignee: SJ Petroleum Machinery Co
Current assignee: SJ Petroleum Machinery Co
Priority date: 2006-09-24
Filing date: 2006-09-24
Publication date: 2007-10-17
Anticipated expiration: 2016-09-24

Abstract

A five-cylinder pump shell relates to a component of the reciprocating pump, comprising installing holes of a supporting crankshaft and a transmission shaft, a cylinder liner guiding for a crosshead, and a cover shell of a gear pair which is arranged on the two sides of the pump shell and transfers the power for the transmission shaft; wherein the shaft line of the installing hole of the transmission shaft is paralleled with that of the installing hole of the crankshaft; the shaft line of the cylinder liner is vertical with that of the installing hole of the crankshaft; the utility model also has six upright plates vertical with the shaft line of the installing hole of the crankshaft, and the six upright plates is welded together with a end plate which is vertical to the upright plates as a whole; each upright plate is opened with the installing hole of the crankshaft, and each hole is welded with a bearing race of the supporting crankshaft; the cylinder liner is welded between the upright plates on the end plate ; the bottom parts of the cylinder liners on the six upright plates are separately opened with the installing holes of the transmission shaft; the holes of the upright plates on the two sides are welded with the bearing races for supporting the transmission shaft; and the exterior margins of the six upright plates are welded with connection plates. The utility model has smaller volume and lighter weight than the three-cylinder pump shell with the same displacement and is convenient for vehicle carrying, the structure is an integral structure, and the rigidity is good. The utility model is beneficial to ensuring the installing precision and the operating precision of the pump.

Description

Five cylinder pump pump cases

Technical field

The utility model relates to the parts of reciprocating pump, particularly housing.

Background technique

In oil drilling, well cementation, fracturing work, all to use reciprocating pump, for example slurry pump.Pump case is the vitals that provides support and play the guiding role to the bent axle in the reciprocating pump, the first-class moving element of cross.At present, the reciprocating pump that use in domestic oil field all is a triplex pump, and its pump case is long cylinder sleeve, big cylinder diameter.Because the cylinder number is few, be again long stroke, big cylinder diameter, thus pump when work, it is very big pulse, pump vibrations severity; Long cylinder sleeve, big cylinder diameter, and big vibrations also make the requirement to pump case intensity improve, and cause housing abundant, and materials are many, and the pump case volume is big and heavy.In addition, pump case is made up of two-part up and down, and crankshaft bearing seat and cylinder sleeve are split type structure, and this descends the rigidity of stressed and motive position, is unfavorable for pump in high pressure, greatly reliably working under the discharge capacity.Along with the development of oil field compression fracture technology, in supporting acidifying, the fracturing unit, need high pressure, big discharge capacity, stable working, and volume is little, in light weight is convenient to vehicle-mounted reciprocating pump.Therefore, need corresponding pump case.

Summary of the invention

The purpose of this utility model is, a kind of five cylinder pump pump cases are provided, make a kind of high-power, high pressure, big discharge capacity, and little, in light weight possibility that be designed to of being convenient to five vehicle-mounted cylinder reciprocating pumps of volume, thus solve some problems of triplex pump existence.

Five cylinder pump pump cases provided by the utility model, have the mounting hole that supports bent axle and transmission shaft and be the cylinder sleeve of cross-head guide, has the case that is arranged on the pump case both sides for the gear pair of transmission shaft transferring power, the axis of transmission shaft mounting hole parallels with the axis in crankshaft installed hole, the axis in the axis of cylinder sleeve and crankshaft installed hole is perpendicular, it is characterized in that, six risers with vertical crankshaft mounting hole axis, six risers and perpendicular end plate are integrally welded, have the crankshaft installed hole on each riser, be welded with the bearing race that supports bent axle on each hole, between each riser, be welded with a cylinder sleeve on the described end plate, on six risers, below cylinder sleeve, respectively have the transmission shaft mounting hole, be welded with the bearing race of supporting shaft on the hole of vertical plates on both sides, the outer rim of six risers is welded with connecting plate.

The utility model has the advantages that

1, five cylinder pump pump cases, the cylinder sleeve number increases, and the robust motion of pump is strengthened, vibrations greatly descend, and, under equal discharge capacity, the length of cylinder sleeve can shorten, and cylinder diameter can reduce, these factors, pump housing materials are greatly reduced, and volume significantly diminishes, and is greatly light, both can satisfy the production requirement of high-power, high pressure, big discharge capacity, and can be fitted in the operating vehicle again and move with it, the existing vibrations of triplex pump that overcome equal discharge capacity are big, volume is big, and heaviness is unsuitable for vehicle-mounted defective.

2, pump case is the integral solder part, and crankshaft bearing seat and cylinder sleeve are monolithic construction, good rigidly not only, and be convenient to processing, help guaranteeing the installation precision and the running precision of pump.

Description of drawings

Fig. 1 is the utility model sectional view;

Fig. 2 is Figure 1A-A sectional view (including the B-B partial sectional view).

Embodiment

Referring to Fig. 1, Fig. 2, six risers are made up of 4 middle risers 10 and 2 cant boards 9, integrally welded with it with the end plate 6 that six risers are perpendicular in the one end, 5 full circle cylinder sleeves 3 are welded on the end plate 6 between the every riser, have crankshaft installed hole 12 and transmission shaft mounting hole 4 on the every riser, transmission shaft mounting hole 4 is positioned at the below of cylinder sleeve 3, welding crankshaft bearing seat ring 11 on each crankshaft installed hole 12, welding transmission shaft bearing seat ring 5 on the transmission shaft mounting hole 4 on the vertical plates on both sides 9, the parallel axes of the axis of crankshaft bearing seat ring and transmission shaft bearing seat ring, the axis of each cylinder sleeve one by one with the axis normal of crankshaft bearing seat ring, provide the case 7 of the gear pair of power to be welded on the outside of vertical plates on both sides 9 respectively for transmission shaft, the edge joint weld of the middle riser 10 between vertical plates on both sides 9 is fishplate bar in succession, connecting plate is divided into header board 2 and back plate 1, the former uses thin material, the latter uses thick material, respectively leave peep hole 16 and 17 on both, header board 2 interrupts at the cylinder sleeve place, and interruptions is welded with end plate 6 up and down in cylinder sleeve mutually with slab 18; For the volume that makes pump case reduces as far as possible, lighter, can take two side millings that each cylinder sleeve is adjacent flat, the plane is drawn close, and risers 10 in the middle of 4 are left in this place abdicate cylinder sleeve and contacted with it gap 13, five cylinder sleeves are welded into one together with riser, the centre distance of each cylinder is diminished, to reduce the width of pump case, see the B-B partial cutaway; Dismounting for convenience at the pump case width direction, is left the hole 14 that connects six risers and five cylinder sleeves; In order to strengthen rigidity, between six risers,, under end plate 6, be welded to connect the stiffening plate 8 of six risers in the upper and lower gusset 15 that is welded to connect each riser in crankshaft installed hole 12.

Claims

1, five cylinder pump pump cases, have the mounting hole that supports bent axle and transmission shaft and be the cylinder sleeve of cross-head guide, has the case that is arranged on the pump case both sides for the gear pair of transmission shaft transferring power, the axis of transmission shaft mounting hole parallels with the axis in crankshaft installed hole, the axis in the axis of cylinder sleeve and crankshaft installed hole is perpendicular, it is characterized in that, six risers with vertical crankshaft mounting hole axis, six risers and a perpendicular end plate are integrally welded, have the crankshaft installed hole on each riser, be welded with the bearing race that supports bent axle on each hole, between each riser, be welded with a cylinder sleeve on the described end plate, on six risers, below cylinder sleeve, respectively have the transmission shaft mounting hole, be welded with the bearing race of supporting shaft on the hole of vertical plates on both sides, the outer rim of six risers is welded with connecting plate.

2, five cylinder pump pump cases according to claim 1 is characterized in that there is the plane both sides that each cylinder sleeve is adjacent, leave on the riser and the contacted gap of cylinder sleeve, and five cylinder sleeves are welded into one at side plane.

3, five cylinder pump pump cases according to claim 1 and 2 is characterized in that, have the hole that connects six risers and five cylinder sleeves at the pump case width direction.

4, five cylinder pump pump cases according to claim 1 and 2 is characterized in that, in the upper and lower gusset that is welded to connect each riser in crankshaft installed hole, under end plate, are welded to connect the stiffening plate of six risers between six risers.