CN113638876A - Frame structure of reciprocating pump for saving lubricating oil quantity - Google Patents
Frame structure of reciprocating pump for saving lubricating oil quantity Download PDFInfo
- Publication number
- CN113638876A CN113638876A CN202111110050.1A CN202111110050A CN113638876A CN 113638876 A CN113638876 A CN 113638876A CN 202111110050 A CN202111110050 A CN 202111110050A CN 113638876 A CN113638876 A CN 113638876A
- Authority
- CN
- China
- Prior art keywords
- cavity
- lubricating oil
- reciprocating pump
- crosshead
- crankshaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000004062 sedimentation Methods 0.000 claims abstract description 22
- 239000000314 lubricant Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000012360 testing method Methods 0.000 abstract description 6
- 239000003208 petroleum Substances 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 14
- 239000003921 oil Substances 0.000 description 12
- 238000013461 design Methods 0.000 description 8
- 238000005461 lubrication Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 239000002199 base oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- 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
- F04B53/18—Lubricating
-
- 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
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Abstract
The invention discloses a frame structure for saving lubricating oil quantity of a reciprocating pump, which relates to the field of petroleum engineering equipment, in particular to a frame structure for saving lubricating oil quantity of a reciprocating pump, and comprises a crankshaft cavity, a crosshead cavity, a crankshaft cavity bottom surface, a crosshead cavity bottom surface, a water sedimentation cavity, a water outlet, an improved crankshaft cavity bottom surface, an improved crosshead cavity bottom surface and the like in a frame, wherein the water sedimentation cavity of the crosshead cavity in the frame of the novel reciprocating pump is cancelled, so that the novel reciprocating pump saves unnecessary 30 liters of lubricating oil in the test and user use of a manufacturing enterprise, the improved crankshaft cavity bottom surface and the improved crosshead cavity bottom surface in the frame are designed into slopes of 2-3 degrees, the number of 10 liters of lubricating oil can be reduced for the manufacturing enterprise and the user, the user of the novel reciprocating pump can more thoroughly replace new lubricating oil, and the service life of parts can be prolonged, the manufacturing cost of manufacturing enterprises and the running cost of users are reduced.
Description
Technical Field
The invention relates to the field of petroleum engineering equipment, in particular to a frame structure of a reciprocating pump for saving lubricating oil.
Background
A novel reciprocating pump appears in the field of current petroleum engineering equipment, a reciprocating pump and a fracturing pump in the field of petroleum engineering equipment are related to, a bearing between a power end crankshaft connecting rod journal and a connecting rod big end inner hole, a sliding bearing is replaced from a traditional rolling bearing between a connecting rod small end inner hole and a cross head pin, the size of the original rolling bearing reciprocating pump is greatly reduced, the weight is greatly reduced, the problem that the traditional reciprocating pump cannot work under the rated power for a long time is thoroughly solved, and the quality improvement of other aspects such as short service life of parts of the traditional reciprocating pump is overcome. However, because the reciprocating pump has low rotating speed and large pressure, strict requirements are put on lubricating oil, the quantity of the lubricating oil is required to be large, and the quantity of the lubricating oil added at one time is 600 liters; the one-time use time of the lubricating oil is required to be short, namely the quality cycle time of the lubricating oil is short; the lubricating oil has high requirements on the quality, the imported Mobil lubricating oil or Shell lubricating oil has high requirements on the viscosity value of the oil, so the price is high, and the price is high and is over 100 yuan/liter; in the production process, a large amount of lubricating oil is wasted, for example, factory experiments in a company are required before factory shipment, the amount of added lubricating oil is 600 liters, after the experiments are finished, the amount of extracted lubricating oil is much less than the amount of added lubricating oil, 50 liters of lubricating oil is reduced at most, namely 50 liters of lubricating oil is consumed in one experiment, the value is 5000 yuan, and the number of lubricating oil experiments cannot exceed 3 times, so that the manufacturing cost is increased; when the application instruction requires a user to use a new reciprocating pump for the first time, the lubricating oil needs to be replaced within 1 month or 100 hours, the lubricating oil needs to be replaced after the reciprocating pump works for 1000 hours or 3 months normally, the quantity of the lubricating oil added each time is 600 liters, so that the user feels that the operation cost is high, and certain resistance is brought to the popularization of the novel reciprocating pump.
The number of the lubricating oil is large due to a plurality of reasons, wherein the structural design of the frame does not consider the requirement of saving the lubricating oil, so that the frame structure constitutes one of the reasons of wasting the lubricating oil, therefore, the production cost of a manufacturing enterprise of the reciprocating pump and the operation cost of a user of the reciprocating pump need to be saved, and the research of the frame structure of the reciprocating pump for saving the quantity of the lubricating oil becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a frame structure of a reciprocating pump for saving the quantity of lubricating oil.
The technical scheme of the invention is as follows:
analyzing the reason of the waste of the lubricating oil quantity and then taking corresponding measures.
The power end of the traditional reciprocating pump is not only that the bearings at two ends of a crankshaft are rolling bearings, but also that the bearings between a crankshaft connecting rod journal and a connecting rod large-end inner hole, and the bearings between a connecting rod small-end inner hole and a crosshead pin are rolling bearings, lubricating oil for lubricating the bearings is stored in a crankshaft cavity, a large gear and a small gear are also in the crankshaft cavity, the main lubricating mode of the large gear and the small gear and the rolling bearings is that the large gear is used for splashing lubrication, the lubricating oil is continuously splashed into the crosshead cavity and then flows back into the crankshaft cavity, the lubricating oil circulates in the crankshaft cavity and the crosshead cavity in a reciprocating mode, basically most of the lubricating oil needs to pass through the crosshead cavity, and because a water sedimentation cavity cannot be designed in the crankshaft cavity, only a water sedimentation cavity can be designed in the crosshead cavity, and water is discharged from a water outlet of the water sedimentation cavity; because the lubricating oil of the traditional reciprocating pump is stored in a crankshaft cavity in a rack, a crosshead cavity is very close to the crankshaft cavity, and the quantity of the lubricating oil is large, the bottom surfaces of the crankshaft cavity and the crosshead cavity are horizontal.
The structure of original traditional reciprocating pump frame has been used for reference in the frame design to current novel reciprocating pump, consequently, two water sedimentation chambeies have still been designed, the volume of two water sedimentation chambeies is very big, 30 liters, this water sedimentation chamber is whole to be possessed by lubricating oil at reciprocating pump operation initial stage, the effective use quantity 30 liters that begin to reduce lubricating oil, this just causes the waste of lubricating oil, the bent axle chamber bottom surface of traditional reciprocating pump, cross head chamber bottom surface all is the horizontally, still be used for reference equally, two very big water sedimentation chambeies in space have also been designed specially in the cross head intracavity, rivers that contain in the lubricating oil are to the water sedimentation case on both sides.
The structure of the present novel reciprocating pump is changed greatly, the bearing between power end crankshaft connecting rod journal and connecting rod big end hole, the bearing has all been changed into slide bearing from traditional antifriction bearing between connecting rod little end hole and the cross head round pin, big pinion is outside the bent axle chamber, the lubricating-oil tank is not in the bent axle intracavity, it has gone to transfer to in the new base, all bearings and gears all rely on pressure lubrication, no longer splash lubrication, the water sedimentation chamber still designs at the cross head chamber just not exact design, consequently give the cancellation, handle the processing that contains water in the lubricating oil with other better modes in the base oil tank of new design, consequently cancel the water sedimentation chamber in cross head chamber, alright practice thrift 30 liters of lubricating oil quantity.
The inclination of cross head chamber bottom surface is 2 ~ 3 after the improvement, and lubricating oil just flows into the bent axle intracavity from the cross head chamber easily like this, and bent axle chamber bottom surface also designs into inclination 2 ~ 3 after the improvement, and the lubricating oil in bent axle chamber just flows into the oil tank of base through returning oil chamber easily in, and the oil tank speed that lubricating oil refluxes the base is faster, and the speed of lubricating oil turnover is faster, alright in order to reduce the quantity of lubricating oil. The reciprocating pump has the advantages that the factory test which is necessary to be carried out after the manufacturing of the reciprocating pump is finished is carried out, lubricating oil needs to be pumped out from the oil tank after the test is finished, the inner cavity of the rack is cleaned, the lubricating oil used by the novel reciprocating pump is high in viscosity value and strong in capability of adhering to the metal surface, the adhesion of the lubricating oil on the bottom surface of the horizontal crankshaft cavity and the bottom surface of the crosshead cavity reaches 10 liters originally, and the lubricating oil is wasted. At the user, the user needs to replace the new lubricating oil regularly, and the user does not clean the crankshaft cavity and the crosshead cavity due to condition limitation, so that the lubricating oil adhered to the bottom surface of the crankshaft cavity and the bottom surface of the crosshead cavity pollutes the new lubricating oil, and the service life of parts of the reciprocating pump is adversely affected. The original situation can be overcome by improvement.
Drawings
FIG. 1-power end partial perspective view of a reciprocating pump housing;
FIG. 2-section A of FIG. 1;
FIG. 3-section B-B of FIG. 2;
FIG. 4-the C-C section view of FIG. 3;
FIG. 5 is a cross-sectional view of a reciprocating pump housing configuration that conserves lubricant volume;
FIG. 6-a schematic view of a crankshaft cavity and crosshead cavity of a conventional reciprocating pump.
The reference numbers are as follows:
1-crankshaft cavity, 2-crosshead cavity, 3-crankshaft cavity bottom, 4-crosshead cavity bottom, 5-water sedimentation cavity, 6-water outlet, 7-improved crankshaft cavity bottom, 8-improved crosshead cavity bottom, 9-oil return cavity, 10-crankshaft cavity, 11-crosshead cavity, 12-connecting rod, 13-crankshaft cavity bottom, 14-crosshead cavity bottom, 15-base, 16-rolling bearing, 17-big gear and 18-rolling bearing.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
The embodiments of the present invention are not limited to the following examples, and various changes made without departing from the spirit of the present invention are within the scope of the present invention.
Referring to fig. 1 to 6, the frame structure for saving lubricant oil of a reciprocating pump of this embodiment includes a crankshaft cavity 1, a crosshead cavity 2, a crankshaft cavity bottom surface 3, a crosshead cavity bottom surface 4, a water sedimentation cavity 5, a water discharge port 6, an improved rear crankshaft cavity bottom surface 7, an improved rear crosshead cavity bottom surface 8, an oil return cavity 9, a crankshaft cavity 10, a crosshead cavity 11, a connecting rod 12, a crankshaft cavity bottom surface 13, a crosshead cavity bottom surface 14, a base 15, a rolling bearing 16, a large gear 17, and a rolling bearing 18.
Please refer to fig. 6, analyze the reason of the amount of the lubricant wasted in the prior reciprocating pump, and then take corresponding measures, the power end of the conventional reciprocating pump is not only that the bearings at the two ends of the crankshaft are rolling bearings, but also that the rolling bearing 16 is arranged between the journal of the crankshaft and the bore of the big end of the connecting rod, the rolling bearing 18 is arranged between the bore of the small end of the connecting rod and the crosshead pin, the lubricant for lubricating these bearings is stored in the crankshaft cavity 10, the big gear 17 and the small gear are also in the crankshaft cavity 10, one of the main forms of lubrication of the big gear and the small gear and the rolling bearing is the splash lubrication of the big gear 17, the lubricant is splashed into the crosshead cavity 11 continuously and then flows back to the crankshaft cavity, the lubricant circulates in the crankshaft cavity and the crosshead cavity in a reciprocating manner, basically, most of the lubricant passes through the crosshead cavity, because a water precipitation cavity cannot be designed in the crankshaft cavity, only two water precipitation cavities with large space are specially designed in the crosshead cavity 11, the lubricating oil in the traditional reciprocating pump is stored in a crankshaft cavity 10 in a frame, a crosshead cavity is very close to the crankshaft cavity, the quantity of the lubricating oil is large, and therefore the bottom surface 13 of the crankshaft cavity and the bottom surface 14 of the crosshead cavity are both horizontal.
Referring to fig. 1 to 4, the frame structure of the original conventional reciprocating pump is used as a reference for the conventional reciprocating pump in the frame design, so that two water sedimentation chambers 5 are still designed, the volume of the two water sedimentation chambers 5 is large and 30 liters, the water sedimentation chamber 5 is completely occupied by lubricating oil at the initial stage of the operation of the reciprocating pump, and the effective use amount of the lubricating oil is reduced by 30 liters at the beginning, which causes the waste of the lubricating oil, and the crankshaft chamber bottom surface 13 and the crosshead chamber bottom surface 14 of the conventional reciprocating pump are both horizontal and are also used as a reference.
Referring to fig. 5, the structure of the present novel reciprocating pump is changed greatly, the bearings between the power end crankshaft connecting rod journal and the connecting rod large end inner hole, and the bearings between the connecting rod small end inner hole and the cross head pin are all changed from the traditional rolling bearing into sliding bearings, the large gear and the small gear are outside the crankshaft cavity, the lubricating oil tank is not in the crankshaft cavity 1, and is transferred to a new base, all the bearings and gears are lubricated by pressure and are not lubricated by splashing, the water sedimentation cavity 6 is also designed in the cross head cavity 2 or is not designed correctly, so the water sedimentation cavity 5 in the cross head cavity 2 is eliminated, and the quantity of 30 liters of lubricating oil is saved.
Referring to fig. 5, the slope of the bottom surface 8 of the improved crosshead cavity is 2 to 3 degrees, so that the lubricating oil can easily flow into the crankshaft cavity 1 from the crosshead cavity 2, the slope of the bottom surface 7 of the improved crankshaft cavity is also designed to be 2 to 3 degrees, the lubricating oil in the crankshaft cavity 1 can easily flow into the oil tank of the base through the oil return cavity 9, the reason why the slope is 2 to 3 degrees is that if the slope is too small, the flow rate of the lubricating oil is too slow, the slope is too large, the space of the frame can be increased, the speed of the lubricating oil flowing back to the oil tank of the base is higher, the turnover speed of the lubricating oil is higher, the quantity of the lubricating oil can be reduced, a factory test which needs to be performed after the manufacturing of the reciprocating pump is completed, the lubricating oil needs to be pumped out from the oil tank after the test is completed, the inner cavity of the frame is cleaned, and the lubricating oil has strong ability of adhering to the metal surface due to the high viscosity of the lubricating oil used by the novel reciprocating pump, the original condition can be avoided by improving that 10 liters of lubricating oil is adhered to the bottom surface of the horizontal crankshaft cavity and the bottom surface 4 of the crosshead cavity, and users need to replace the lubricating oil regularly at the user, and the lubricating oil is not cleaned by the users due to condition limitation, so that the lubricating oil adhered to the bottom surfaces 3 and 4 of the crankshaft cavity and the crosshead cavity in the figure 2 can pollute the new lubricating oil and bring adverse effect to the service life of parts of the reciprocating pump.
The invention cancels the water sedimentation cavity 5 of the novel reciprocating pump crosshead cavity 2, so that the reciprocating pump saves unnecessary 30 liters of lubricating oil in the test and the use of users of manufacturing enterprises, designs the inclination of the improved crankshaft cavity bottom 7 and the improved crosshead cavity bottom 8 to be 2-3 degrees, can reduce the amount of 10 liters of lubricating oil for manufacturing enterprises and users, can ensure that users of the reciprocating pump can more thoroughly replace new lubricating oil, and prolongs the service life of parts.
The above detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art, and these changes are within the protection of the present invention and also within the protection scope of the present invention.
Claims (3)
1. A frame structure of a reciprocating pump for saving lubricating oil is characterized in that a crankshaft cavity (1), a crosshead cavity (2), a water sedimentation cavity (5), a water outlet (6), an improved crankshaft cavity bottom surface (7) and an improved crosshead cavity bottom surface (8).
2. The frame structure of a reciprocating pump for saving the amount of lubricating oil as claimed in claim 1, wherein the water sedimentation chamber (5) of the crosshead chamber (2) of the original novel reciprocating pump is eliminated.
3. The structure of a reciprocating pump for saving the amount of lubricant according to claim 1, wherein the modified crank chamber bottom 7 and the modified crosshead chamber bottom 8 are designed to have a slope of 2 ° to 3 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111110050.1A CN113638876A (en) | 2021-09-23 | 2021-09-23 | Frame structure of reciprocating pump for saving lubricating oil quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111110050.1A CN113638876A (en) | 2021-09-23 | 2021-09-23 | Frame structure of reciprocating pump for saving lubricating oil quantity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113638876A true CN113638876A (en) | 2021-11-12 |
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ID=78426195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111110050.1A Pending CN113638876A (en) | 2021-09-23 | 2021-09-23 | Frame structure of reciprocating pump for saving lubricating oil quantity |
Country Status (1)
| Country | Link |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0557370U (en) * | 1992-01-07 | 1993-07-30 | 株式会社丸山製作所 | Reciprocating pump |
| JP2000130355A (en) * | 1998-10-26 | 2000-05-12 | Maruyama Mfg Co Ltd | Pump |
| JP2002266765A (en) * | 2001-03-08 | 2002-09-18 | Maruyama Mfg Co Ltd | Crankcase for reciprocating machine |
| EP2025937A1 (en) * | 2007-08-07 | 2009-02-18 | Three Es S.r.l. | Reciprocating pump |
| US20120058000A1 (en) * | 2010-09-06 | 2012-03-08 | National Oilwell Varco, L.P. | Self-Aligning Rod Seal |
| CN209324643U (en) * | 2018-11-03 | 2019-08-30 | 山东恒利矿场设备有限公司 | It is a kind of improve crankcase structure pass through pump |
| CN211039010U (en) * | 2019-11-18 | 2020-07-17 | 胜瑞兰工业设备（苏州）有限公司 | Reciprocating pump crankcase |
| US20200386222A1 (en) * | 2019-06-07 | 2020-12-10 | Schlumberger Technology Corporation | Reciprocating Pump Trunnions Connecting Crosshead and Connecting Rod |
-
2021
- 2021-09-23 CN CN202111110050.1A patent/CN113638876A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0557370U (en) * | 1992-01-07 | 1993-07-30 | 株式会社丸山製作所 | Reciprocating pump |
| JP2000130355A (en) * | 1998-10-26 | 2000-05-12 | Maruyama Mfg Co Ltd | Pump |
| JP2002266765A (en) * | 2001-03-08 | 2002-09-18 | Maruyama Mfg Co Ltd | Crankcase for reciprocating machine |
| EP2025937A1 (en) * | 2007-08-07 | 2009-02-18 | Three Es S.r.l. | Reciprocating pump |
| US20120058000A1 (en) * | 2010-09-06 | 2012-03-08 | National Oilwell Varco, L.P. | Self-Aligning Rod Seal |
| CN209324643U (en) * | 2018-11-03 | 2019-08-30 | 山东恒利矿场设备有限公司 | It is a kind of improve crankcase structure pass through pump |
| US20200386222A1 (en) * | 2019-06-07 | 2020-12-10 | Schlumberger Technology Corporation | Reciprocating Pump Trunnions Connecting Crosshead and Connecting Rod |
| CN211039010U (en) * | 2019-11-18 | 2020-07-17 | 胜瑞兰工业设备（苏州）有限公司 | Reciprocating pump crankcase |
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