CN102418681A - Reciprocating plunger pump containing crosshead central block - Google Patents
Reciprocating plunger pump containing crosshead central block Download PDFInfo
- Publication number
- CN102418681A CN102418681A CN2011104071977A CN201110407197A CN102418681A CN 102418681 A CN102418681 A CN 102418681A CN 2011104071977 A CN2011104071977 A CN 2011104071977A CN 201110407197 A CN201110407197 A CN 201110407197A CN 102418681 A CN102418681 A CN 102418681A
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- CN
- China
- Prior art keywords
- crosshead
- connecting rod
- central block
- pitman shaft
- shaft bearing
- Prior art date
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- Reciprocating Pumps (AREA)
Abstract
The invention relates to a reciprocating plunger pump, and provides the reciprocating plunger pump which contains a crosshead central block and is capable of bearing a heavy load. The reciprocating plunger pump comprises a shell, a crank shaft, a connecting rod component and a crosshead component, wherein the connecting rod component comprises a connecting rod bearing seat and a connecting rod; the crosshead component comprises a crosshead and the crosshead central block; a connecting rod small-head tile is arranged between an arc boss of the connecting rod and an arc groove of the crosshead central block; oil storage grooves are formed on an excircle surface of the crosshead and the connecting rod small-head tile; oil channel holes are formed on the connecting rod, the crosshead and the crosshead central block and are communicated to a friction surface of the connecting small-head tile; and a pin shaft passes through the connecting rod and the crosshead. The reciprocating plunger pump is a high-power plunger pump which is simple in structure and convenient to use, and can bear a large thrust load.
Description
Technical field
The present invention relates to a kind of reciprocating pump, particularly a kind of reciprocating pump that contains the crosshead central block that can bear heavy load.
Background technique
Reciprocating plunger pump like well cementation, acidifying, pressure break etc., is installed on car or the sled in being usually used in oil field operation usually, is dragged to the oil field work on the spot.Reciprocating plunger pump needs prime mover that motivational drive is provided, thereby the fluid pressurized of usual pressure is become the high-pressure liquid of different pressures.Different according to job requirements, each operating time of pump is also different, from several hrs, does not wait by tens hours, and sometimes, only work was several times in one month.Many times,, need a plurality of parallels connection of pumps be worked simultaneously, to obtain the high-pressure liquid of bigger discharge capacity according to job requirements.Along with the development of oil recovery technique, the power requirements of plunger pump is increasing, and the suffered load of its main load parts connecting rod is also increasing, causes bearing pin and copper sheathing thereof to bear, and is destroyed, thereby influences operation.
Summary of the invention
The object of the invention is exactly in order to overcome the deficiency of above-mentioned existing technology, and a kind of reciprocating pump that contains the crosshead central block is provided, and is a kind of simple in structure, easy to use, can bear the high-power plunger pump than high thrust load.
The objective of the invention is to realize through following technical measures: a kind of reciprocating pump that contains the crosshead central block, comprise housing, bent axle, link assembly, crosshead assembly, said bent axle, link assembly, crosshead assembly are located at enclosure interior; Said link assembly comprises pitman shaft bearing and connecting rod, pitman shaft bearing hoop on a crank throw of bent axle, connecting rod one end and the removable mechanical connection of pitman shaft bearing, the connecting rod the other end is an arc cam, boss side surfaces is provided with bearing pin and passes through the hole; Said crosshead assembly comprises crosshead and crosshead central block, and said crosshead is logical cylindric in being, the middle part is provided with bearing pin and passes through the hole; The end is provided with positioning spigot; Crosshead central block one end is a boss, stretches in the crosshead, with the removable mechanical connection of crosshead; Boss is provided with circular groove, and the other end is mechanically connected to push rod or plunger; Be provided with connecting rod small end watt between the arc groove of the arc boss of connecting rod and crosshead central block; Crosshead periphery and connecting rod small end watt are provided with oil storage tank; Connecting rod, crosshead and crosshead central block are provided with oil channel hole, and oil channel hole is communicated to the rubbing surface of connecting rod small end watt; Bearing pin passes connecting rod and crosshead.
In technique scheme, said pitman shaft bearing is two semicircular structures, and hoop is provided with disconnectable Sliding bush during merging in the pitman shaft bearing on a crank throw of bent axle, and pitman shaft bearing end is provided with positioning spigot, with connecting rod detachable mechanical connection.
In technique scheme, the arc cam side of said connecting rod is provided with bearing pin through the hole, edge bearing pin copper sheathing in the hole.
The present invention compared with prior art has the following advantages:
1. detachable structure in many places is simply light, convenient disassembly.Such as the mechanical connection of crosshead centerbody and crosshead, can be after pulling down clack box directly dismounting, just can expose connecting rod small end watt.
2. combining plunger pump is the characteristics of thrust stroke acting, has designed connecting rod arc cam and connecting rod small end watt.Make the loaded area maximization of the face of being slidingly matched, make it to bear higher load, thereby make plunger pump can export the more fluid of high pressure, satisfy the needs of the big discharge capacity high pressure of oil field operation.
3. bigger sliding friction surface cooperates specially designed lubricating oil pipeline, can prolong uninterrupted working time.
4. with traditional integral formula crosshead, be split up into crosshead and crosshead centerbody.Improved the loaded area of the face that is slidingly matched, also convenient simultaneously the manufacturing.
Description of drawings
Fig. 1 contains the structural representation of the reciprocating pump of crosshead central block for the present invention.
Wherein: 1. connecting rod, 2. crosshead, 3. connecting rod small end watt, 4. bearing pin, 5. bearing pin copper sheathing, 6. crosshead central block, 7. pitman shaft bearing, 8. housing, 9. bent axle, 10. push rod, 11. clack boxes.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further description.
As shown in Figure 1, present embodiment provides a kind of reciprocating pump that contains the crosshead central block, comprises housing 8, bent axle 9, link assembly, crosshead assembly, and said bent axle 9, link assembly, crosshead assembly are located at housing 8 inside; Said link assembly comprises pitman shaft bearing 7 and connecting rod 1; Pitman shaft bearing 7 is bound round on a crank throw of bent axle 9, connecting rod 1 one ends and pitman shaft bearing 7 removable mechanical connections, and connecting rod 1 the other end is an arc cam; Boss side surfaces is provided with bearing pin through the hole, edge bearing pin copper sheathing 5 in the hole.Said crosshead assembly comprises crosshead 2 and crosshead central block 6, and said crosshead 2 is logical cylindric in being, the middle part is provided with bearing pin and passes through the hole; The end is provided with positioning spigot; Crosshead central block 6 one ends are boss, stretch in the crosshead 2, with crosshead 2 removable mechanical connections; Smooth and hard circular groove is arranged on the boss, and the other end is mechanically connected to push rod 10; Be provided with connecting rod small end watts 3 between the arc groove of the arc boss of connecting rod 1 and crosshead central block 6; Crosshead 2 peripheries and connecting rod small end watts 3 is provided with oil storage tank; Connecting rod 1, crosshead 2 and crosshead central block 6 are provided with oil channel hole, and oil channel hole is communicated to the rubbing surface of connecting rod small end watts 3; Bearing pin 4 passes the bearing pin copper sheathing 5 and crosshead 2 in the connecting rod 1.
In the above-described embodiments; Said pitman shaft bearing 7 is two semicircular structures, and hoop is provided with disconnectable Sliding bush during merging in the pitman shaft bearing 7 on a crank throw of bent axle 9; Pitman shaft bearing 7 ends are provided with positioning spigot, with connecting rod 1 detachable mechanical connection.
During the running of present embodiment plunger pump, bent axle 9 rotates in housing 8, and crosshead 2 moves reciprocatingly in housing 8; Connecting rod 1 left end rotates with bent axle 9, and connecting rod 1 right-hand member is done left and right sides to-and-fro motion with crosshead 2 simultaneously around bearing pin 4 rotations.Crosshead 2 is when left movement, and clack box 11 is a sucting stage, and push rod 10 does not stress; When crosshead 2 moves right; Clack box 11 is the discharge stage; Push rod 10 is stressed, and the load that push rod 10 passes over mainly acts on the crosshead central block 6, and forms sliding friction pairs with connecting rod small end watts 3; Directly and connecting rod 1 transmitted load, bearing pin 4 and bearing pin copper sheathing 5 stress destructions have been avoided in the process.Crosshead 2 receives the radial component that crosshead central block 6 transmits.
Claims (3)
1. a reciprocating pump that contains the crosshead central block comprises housing, bent axle, link assembly, crosshead assembly, it is characterized in that: said bent axle, link assembly, crosshead assembly are located at enclosure interior; Said link assembly comprises pitman shaft bearing and connecting rod, pitman shaft bearing hoop on a crank throw of bent axle, connecting rod one end and the removable mechanical connection of pitman shaft bearing, the connecting rod the other end is an arc cam, boss side surfaces is provided with bearing pin and passes through the hole; Said crosshead assembly comprises crosshead and crosshead central block, and said crosshead is logical cylindric in being, the middle part is provided with bearing pin and passes through the hole; The end is provided with positioning spigot, and crosshead central block one end is a boss, stretches in the crosshead; With the removable mechanical connection of crosshead, boss is provided with circular groove; Be provided with connecting rod small end watt between the arc groove of the arc boss of connecting rod and crosshead central block; Crosshead periphery and connecting rod small end watt are provided with oil storage tank; Connecting rod, crosshead and crosshead central block are provided with oil channel hole, and oil channel hole is communicated to the rubbing surface of connecting rod small end watt; Bearing pin passes connecting rod and crosshead.
2. the reciprocating pump that contains the crosshead central block according to claim 1; It is characterized in that: said pitman shaft bearing is two semicircular structures; Hoop is on a crank throw of bent axle during merging; Be provided with disconnectable Sliding bush in the pitman shaft bearing, pitman shaft bearing end is provided with positioning spigot, with connecting rod detachable mechanical connection.
3. the reciprocating pump that contains the crosshead central block according to claim 1 is characterized in that: the arc cam side of said connecting rod is provided with bearing pin through the hole, edge bearing pin copper sheathing in the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104071977A CN102418681A (en) | 2011-12-09 | 2011-12-09 | Reciprocating plunger pump containing crosshead central block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104071977A CN102418681A (en) | 2011-12-09 | 2011-12-09 | Reciprocating plunger pump containing crosshead central block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102418681A true CN102418681A (en) | 2012-04-18 |
Family
ID=45943263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104071977A Pending CN102418681A (en) | 2011-12-09 | 2011-12-09 | Reciprocating plunger pump containing crosshead central block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102418681A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013163788A1 (en) * | 2012-04-29 | 2013-11-07 | 四川宏华石油设备有限公司 | Connecting structure for connecting rod and crosshead and assembling method therefor |
| CN111156155A (en) * | 2019-12-29 | 2020-05-15 | 陕西航天动力高科技股份有限公司 | Prevent extravagant seal structure of diaphragm pump fluid |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5078580A (en) * | 1991-03-29 | 1992-01-07 | Dresser-Rand Company | Plural-stage gas compressor |
| JPH08177722A (en) * | 1994-12-27 | 1996-07-12 | Toshiba Corp | Connecting rod of reciprocating compressor |
| CN201273251Y (en) * | 2008-09-04 | 2009-07-15 | 中国石化集团江汉石油管理局第四机械厂 | Easily detachable five-cylinder plunger pump |
| US20100172778A1 (en) * | 2009-01-08 | 2010-07-08 | Weir Spm, Inc. | Connecting rod without wrist pin |
| US20100322802A1 (en) * | 2009-06-23 | 2010-12-23 | Weir Spm, Inc. | Readily Removable Pump Crosshead |
| CN102213209A (en) * | 2011-06-16 | 2011-10-12 | 上海齐耀动力技术有限公司 | T-shape link mechanism |
| CN202360315U (en) * | 2011-12-09 | 2012-08-01 | 四机赛瓦石油钻采设备有限公司 | Reciprocating plunger pump containing crosshead central block |
-
2011
- 2011-12-09 CN CN2011104071977A patent/CN102418681A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5078580A (en) * | 1991-03-29 | 1992-01-07 | Dresser-Rand Company | Plural-stage gas compressor |
| JPH08177722A (en) * | 1994-12-27 | 1996-07-12 | Toshiba Corp | Connecting rod of reciprocating compressor |
| CN201273251Y (en) * | 2008-09-04 | 2009-07-15 | 中国石化集团江汉石油管理局第四机械厂 | Easily detachable five-cylinder plunger pump |
| US20100172778A1 (en) * | 2009-01-08 | 2010-07-08 | Weir Spm, Inc. | Connecting rod without wrist pin |
| US20100322802A1 (en) * | 2009-06-23 | 2010-12-23 | Weir Spm, Inc. | Readily Removable Pump Crosshead |
| CN102213209A (en) * | 2011-06-16 | 2011-10-12 | 上海齐耀动力技术有限公司 | T-shape link mechanism |
| CN202360315U (en) * | 2011-12-09 | 2012-08-01 | 四机赛瓦石油钻采设备有限公司 | Reciprocating plunger pump containing crosshead central block |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013163788A1 (en) * | 2012-04-29 | 2013-11-07 | 四川宏华石油设备有限公司 | Connecting structure for connecting rod and crosshead and assembling method therefor |
| CN111156155A (en) * | 2019-12-29 | 2020-05-15 | 陕西航天动力高科技股份有限公司 | Prevent extravagant seal structure of diaphragm pump fluid |
| CN111156155B (en) * | 2019-12-29 | 2021-11-12 | 陕西航天动力高科技股份有限公司 | Prevent extravagant seal structure of diaphragm pump fluid |
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| PB01 | Publication | ||
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Application publication date: 20120418 |