CN107061216B - Liquid nitrogen pump hot junction - Google Patents
Liquid nitrogen pump hot junction Download PDFInfo
- Publication number
- CN107061216B CN107061216B CN201710427782.0A CN201710427782A CN107061216B CN 107061216 B CN107061216 B CN 107061216B CN 201710427782 A CN201710427782 A CN 201710427782A CN 107061216 B CN107061216 B CN 107061216B
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- Prior art keywords
- lubricating
- pump
- crosshead
- connecting rod
- liquid nitrogen
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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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
- F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
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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
-
- 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
- F04B53/14—Pistons, piston-rods or piston-rod connections
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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
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
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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
- F04B53/18—Lubricating
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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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
- F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
- F04B2015/081—Liquefied gases
- F04B2015/0824—Nitrogen
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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
- F04B53/006—Crankshafts
Abstract
The invention discloses a hot end of a liquid nitrogen pump, which comprises a pump shell assembly, a transmission system assembly, a lubricating system assembly and a cold end connecting structure. The two sides of each eccentric disc are respectively supported by the bearings, so that the rigidity of the main shaft is increased, and the lubricating system is pressure-lubricated and can respectively perform spray lubrication on the bearings and the crosshead; through the lubricating oil channel arranged in the connecting rod, the large end and the small end of the connecting rod are provided with enough lubricating oil, and the lubricating reliability is improved. The connecting rod is integral, and compared with a split connecting rod, the deformation of the large end of the connecting rod is reduced, and the reliability is improved; the bearing seat is split, so that the transmission system is convenient to install; connect through the cold junction and be the flange structure, can be connected with foreign liquid nitrogen pump cold junction like this, and only need change cold junction flange in the ability within range of pump, can form a complete set corresponding liquid nitrogen pump cold junction.
Description
Technical Field
The invention relates to a liquid nitrogen pump, in particular to a hot end of the liquid nitrogen pump.
Background
At present, the main function of a conventional liquid nitrogen pump is to pressurize liquid nitrogen and inject the liquid nitrogen into a storage bottle, so that the working pressure is low, and the discharge pressure is usually not more than 16.5 MPa. The working process of the pump is similar to that of a common reciprocating pump, the volume of a liquid cavity is changed through the reciprocating motion of a plunger, and the low-pressure suction and high-pressure discharge functions of the pump are completed by matching with a suction one-way valve and a discharge one-way valve at a hydraulic end. The conventional liquid nitrogen pump has a limited range of use due to its low pressure. The existing oil field operation process requires a liquid nitrogen pump to reach higher pressure, and the pressure range is generally 45MPa to 120 MPa. As the discharge pressure of the liquid nitrogen pump is increased, the stress of a power transmission mechanism at the hot end of the liquid nitrogen pump is increased, so that higher requirements are put on the lubrication of moving parts and friction parts.
The demand for high-pressure liquid nitrogen pump is urgent on the oil field at present, and the liquid nitrogen pump that liquid nitrogen pump complete sets used is imported, and its cold junction is also modularization abroad, so just require to design a liquid nitrogen pump hot junction, make it not only can reliable operation under high discharge pressure, can be connected with foreign cold junction moreover.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the hot end of the liquid nitrogen pump, which has the advantages of compact structure, safety, reliability, good lubricating effect, convenience in disassembly and assembly, capability of working under high discharge pressure, and capability of being accurately connected with cold ends of different models.
The technical scheme of the invention is as follows: a hot end of a liquid nitrogen pump comprises a pump shell assembly, a transmission system assembly, a lubricating system assembly and a cold end connecting structure, wherein the pump shell assembly comprises a pump shell frame, a pump shell upper cover is mounted on the pump shell frame, a mounting inner cavity for mounting a bearing and a main shaft is formed by the pump shell upper cover and the pump shell frame, a bearing seat upper cover and a bearing seat lower part which are connected through a connecting stud are arranged in the mounting inner cavity, the bearing seat lower part is fixedly connected with the pump shell frame, a crosshead sliding sleeve is fixedly arranged between the pump shell upper cover and the cold end connecting structure in the pump shell frame, and the cold end connecting structure is connected with one side of the pump shell frame;
the transmission system assembly comprises a main shaft, wherein three eccentric discs are arranged on the main shaft at intervals in the axis direction, the three eccentric discs are distributed at a phase position of 120 degrees in the circumferential direction, the main shaft and the eccentric discs are connected together through a connecting key, two sides of each eccentric disc are respectively provided with a bearing arranged on the main shaft, the bearings are arranged in inner holes formed in an upper cover of a bearing seat and the lower part of the bearing seat, the eccentric discs are rotatably connected with a crosshead through connecting rods, and the crosshead is slidably arranged in a crosshead sleeve;
lubricating system assembly is including fixing the lubricated pipe of bearing, the lubricated pipe of cross head and lubricated house steward on pump case frame respectively, the hole both ends of the lubricated pipe of bearing communicate with lubricated house steward and bearing respectively, the lubricated pipe of cross head and lubricated house steward pass through the lubricated hose connection of cross head, the hole of the lubricated pipe of cross head communicates with the inner chamber of cross head sliding sleeve, the lubricated house steward one end of lubricated house steward is passed through the main shaft and is connected with rotary joint.
The hot end of the liquid nitrogen pump further comprises a speed measuring device fixed on the main shaft through a bolt, the speed measuring device is a gear pulse velometer, and the rotary joint is installed on the gear pulse velometer.
The connecting rod comprises a connecting rod big end and a connecting rod small end, wherein the connecting rod big end is sleeved on the outer surface of the eccentric disc and is rotationally connected with the eccentric disc, and the connecting rod small end is rotationally connected with the crosshead through a connecting rod pin.
And a lubricating oil passage communicated with the inner cavity of the crosshead sliding sleeve is arranged in the connecting rod, and two ends of the lubricating oil passage are respectively communicated with the large end of the connecting rod and the small end of the connecting rod.
The pump shell upper cover is also provided with a peeping cover for observing the lubricating condition in the pump body.
The bearing is a cylindrical roller bearing.
The cold end connecting structure is a flange structure with one end arranged in the pump shell frame and connected through a bolt.
The lower part of the bearing seat is connected with the upper cover of the bearing seat through a connecting stud, and the assembly surface of the lower part of the bearing seat and the upper cover of the bearing seat and the central line of the bearing seat hole are on the same plane.
Compared with the prior art, the invention has the following advantages: the structure is compact, the two sides of each eccentric disc are supported by bearings, the rigidity of the main shaft is increased, and the lubricating system is pressure-lubricated and can respectively perform spray lubrication on the bearings and the crosshead; through the lubricating oil channel arranged in the connecting rod, the large end and the small end of the connecting rod are provided with enough lubricating oil, and the lubricating reliability is improved. The connecting rod is integral, and compared with a split connecting rod, the deformation of the large end of the connecting rod is reduced, and the reliability is improved; the bearing seat is split, so that the transmission system is convenient to install; connect through the cold junction and be the flange structure, can be connected with foreign liquid nitrogen pump cold junction like this, and only need change cold junction flange in the ability within range of pump, can form a complete set corresponding liquid nitrogen pump cold junction.
Drawings
The invention is further illustrated below with reference to the figures and examples.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the pump casing assembly of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a cross-sectional view A-A of the present invention;
FIG. 5 is a cross-sectional view B-B of the present invention;
in the figure: 100. pump case assembly, 101, pump case frame, 102, crosshead lubrication pipe, 103, pump case upper cover, 104, lubrication manifold, 105, peep cover, 106, connecting stud, 107, bearing seat upper cover, 108, bearing seat lower part, 109, crosshead sliding sleeve, 200, transmission system assembly, 201, main shaft, 202, eccentric disc, 203, bearing, 204, connecting rod, 205, connecting rod pin, 206, crosshead, 207, connecting key, 208, connecting rod big end, 209, connecting rod small end, 210, crosshead lubrication channel, 300, lubrication system assembly, 301, lubrication hose, 302, main shaft lubrication manifold, 303, rotary joint, 304, bearing lubrication pipe, 400, cold end connection structure, 500, speed measuring device.
Detailed Description
Referring to fig. 1 and 2, the hot end of the liquid nitrogen pump comprises a pump shell assembly 100, a transmission system assembly 200, a lubricating system assembly 300 and a cold end connecting structure 400.
The pump casing assembly 100 includes a pump casing frame 101, a pump casing upper cover 103 is mounted on the pump casing frame 101, and the pump casing upper cover 103 and the pump casing frame 101 are connected by bolts and pins. The pump casing upper cover 103 and the pump casing frame 101 form an installation inner cavity 111 for installing the bearing 203 and the main shaft 201, a bearing seat upper cover 107 and a bearing seat lower part 108 which are connected through a connecting stud 106 are arranged in the installation inner cavity 111, the bearing seat lower part 108 and the pump casing frame 101 are welded together, and a split surface of the bearing seat lower part 108 and the bearing seat upper cover 107 passes through a bearing seat hole center line, namely an assembly surface of the bearing seat lower part 108 and the bearing seat upper cover 107 and the center line of the bearing seat hole are on the same plane. The bearing seat upper cover 107 and the pump shell upper cover 103 are not in strict assembly relation, so that the bearing seat upper cover 107 and the pump shell upper cover 103 are separately machined and are easy to machine and assemble. A crosshead sliding sleeve 109 is fixedly arranged between the pump case upper cover 103 and the cold end connecting structure 400 in the pump case frame 101, the cold end connecting structure 400 is connected with one side of the pump case frame 101, the crosshead sliding sleeve 109 is made of copper alloy materials, and the outer circle of the crosshead sliding sleeve is embedded in the pump case frame 101 in an interference fit mode.
The drive train assembly comprises a main shaft 201, an eccentric disc 202, a bearing 203, a connecting rod 204, a connecting rod pin 205, a cross head 206 and a connecting key 207. The bearing 203 is a cylindrical roller bearing.
The eccentric discs 202 are arranged on the main shaft 201 in the axial direction and are arranged in three at intervals, the three eccentric discs 202 are distributed in a 120-degree phase position in the circumferential direction, and the main shaft 201 and the eccentric discs 202 are connected together through a connecting key 207, so that the eccentric discs 202 can be driven to rotate through the main shaft 201. The combined crankshaft formed by the eccentric disc 202 and the main shaft 201 can change the eccentric size of the eccentric disc 202 when needed, thereby changing the discharge capacity of the liquid nitrogen pump.
Both sides of each eccentric disc 202 are respectively provided with bearings 203 mounted on the main shaft 201, so that both sides of the eccentric disc 202 are provided with a cylindrical roller bearing 203, thereby increasing the rigidity of the main shaft 201. The bearing 203 is installed in an inner hole formed by the bearing housing upper cover 107 and the bearing housing lower portion 108, thereby forming a crank link mechanism that drives the crosshead 206 to linearly reciprocate when the main shaft rotates.
The eccentric disc 202 is rotatably connected with a cross head 206 through a connecting rod 204, and the cross head 206 is slidably arranged in the cross head sliding sleeve 109; the connecting rod 204 comprises a connecting rod big end 208 which is sleeved on the outer surface of the eccentric disc 202 and is rotatably connected with the eccentric disc 202 and a connecting rod small end 209 which is rotatably connected with the crosshead 206 through a connecting rod pin 205. The crosshead 206 slides linearly within a crosshead shoe 109 within the pump casing frame 101.
A lubricating oil channel 210 communicated with the inner cavity of the crosshead slide sleeve 109 is arranged in the connecting rod 204, and two ends of the lubricating oil channel 210 are respectively communicated with the connecting rod large end 208 and the connecting rod small end 209.
As shown in fig. 2, 3 and 5, the lubrication system assembly includes a bearing lubrication pipe 304, a crosshead lubrication pipe 102 and a lubrication manifold 104 respectively fixed on the pump casing frame 101, wherein both ends of an inner hole of the bearing lubrication pipe 304 are respectively communicated with the lubrication manifold 104 and the bearing 203, the crosshead lubrication pipe 102 and the lubrication manifold 104 are connected through a crosshead lubrication hose 301, the inner hole of the crosshead lubrication pipe 102 is communicated with an inner cavity of the crosshead sliding sleeve 109, and one end of the lubrication manifold 104 is connected with a rotary joint 303 through a main shaft lubrication manifold 302. Lubrication may enter from the lubrication manifold 104 and be diverted to the crosshead lubrication hoses 301, the spindle lubrication tubes 302, the bearing lubrication tubes 110, thereby completing lubrication of the crosshead 206, the connecting rod large end 208 of the connecting rod 204, the connecting rod small end 209, and the cylindrical roller bearings 203.
The hot end of the liquid nitrogen pump further comprises a speed measuring device 500 fixed on the main shaft 201 through a bolt, the speed measuring device 500 is of a gear type structure, the speed measuring device 500 is a gear pulse velometer, and the rotary joint 303 is installed on the gear pulse velometer. The speed measurement can be performed by installing a gear pulse velometer.
A peep cover 105 is further provided on the pump housing upper cover 103, and the lubrication inside the pump body can be observed through the peep cover 105.
The cold end connection structure 400 is a flange structure having one end disposed in the pump case frame 101 and connected by bolts. Cold end connection structure 400 is flange formula structure, and it passes through bolted connection with pump case frame 101 to make cold end connection structure 400 and pump case assembly 100 can adopt different materials, cold end connection structure 400 outwards installs from pump case frame 101 in, make the cold end connection pad can be with the power effect on pump case frame 101 when receiving thrust, but not the connecting bolt atress. The cold end connection structure 400 is made of 304N austenitic stainless steel, so that the cold end connection structure can resist low temperature of 196 ℃ below zero and has higher mechanical property than 304.
When the pump shell frame works, the eccentric disc 202 is driven to rotate through the rotation of the main shaft 201, and the eccentric disc 202 drives the connecting rod 204 to drag the crosshead 206 to linearly slide in the crosshead sliding sleeve 109 in the pump shell frame 101. At the same time, the lubrication oil may enter from the lubrication manifold 104 and be diverted to the crosshead lubrication hoses 301, the spindle lubrication tubes 302, the bearing lubrication tubes 110, thereby completing the lubrication of the crosshead 206, the connecting rod large end 208 of the connecting rod 204, the connecting rod small end 209, the cylindrical roller bearings 203. In the invention, because the two sides of each eccentric disc 202 are supported by the cylindrical roller bearings 203, the rigidity of the main shaft 201 is increased, the lubricating system is pressure lubrication, the bearing lubricating pipe 110 is arranged to spray and lubricate each cylindrical roller bearing 203, and the connecting rod 204 is provided with the lubricating oil channel 210, so that the large end and the small end of the connecting rod 204 are provided with enough lubricating oil, and the lubricating reliability is increased. The connecting rod 204 is monolithic, which reduces the amount of deformation of the connecting rod big end 208 and increases reliability relative to a split connecting rod. The bearing seat is of a split type and is divided into a bearing seat upper cover 107 and a bearing seat lower part 108, so that the transmission system is convenient to install. Through cold junction flange, it can be connected with foreign liquid nitrogen pump cold junction, and only need change cold junction flange in the ability within range of the pump, can form a complete set corresponding liquid nitrogen pump cold junction.
The present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention, and the contents of the changes still fall within the scope of the present invention.
Claims (5)
1. The utility model provides a liquid nitrogen pump hot junction, includes pump case assembly, transmission system assembly, lubricating system assembly and cold junction connection structure, its characterized in that: the pump shell assembly comprises a pump shell frame, an upper pump shell cover is mounted on the pump shell frame, a mounting inner cavity for mounting a bearing and a main shaft is formed by the upper pump shell cover and the pump shell frame, an upper bearing seat cover and a lower bearing seat part which are connected through a connecting stud are arranged in the mounting inner cavity, the lower part of the bearing seat is fixedly connected with the pump shell frame, a crosshead sliding sleeve is fixedly arranged between the upper pump shell cover and a cold end connecting structure in the pump shell frame, and the cold end connecting structure is connected with one side of the pump shell frame;
the transmission system assembly comprises a main shaft, wherein three eccentric discs are arranged on the main shaft at intervals in the axis direction, the three eccentric discs are distributed at a phase position of 120 degrees in the circumferential direction, the main shaft and the eccentric discs are connected together through a connecting key, two sides of each eccentric disc are respectively provided with a bearing arranged on the main shaft, the bearings are arranged in inner holes formed in an upper cover of a bearing seat and the lower part of the bearing seat, the eccentric discs are rotatably connected with a crosshead through connecting rods, and the crosshead is slidably arranged in a crosshead sleeve;
the lubricating system assembly comprises a bearing lubricating pipe, a crosshead lubricating pipe and a lubricating main pipe which are respectively fixed on a pump shell frame, two ends of an inner hole of the bearing lubricating pipe are respectively communicated with the lubricating main pipe and the bearing, the crosshead lubricating pipe and the lubricating main pipe are connected through a crosshead lubricating hose, the inner hole of the crosshead lubricating pipe is communicated with an inner cavity of a crosshead sliding sleeve, and one end of the lubricating main pipe is connected with a rotary joint through a main shaft lubricating main pipe;
the connecting rod comprises a connecting rod large end which is sleeved on the outer surface of the eccentric disc and is rotationally connected with the eccentric disc and a connecting rod small end which is rotationally connected with the crosshead through a connecting rod pin;
a lubricating oil passage communicated with the inner cavity of the crosshead slide sleeve is arranged in the connecting rod, and two ends of the lubricating oil passage are respectively communicated with the large end and the small end of the connecting rod;
the cold end connecting structure is a flange structure with one end arranged in the pump shell frame and connected through a bolt.
2. The hot end of the liquid nitrogen pump according to claim 1, wherein: the hot end of the liquid nitrogen pump further comprises a speed measuring device fixed on the main shaft through a bolt, the speed measuring device is a gear pulse velometer, and the rotary joint is installed on the gear pulse velometer.
3. The hot end of the liquid nitrogen pump according to claim 1, wherein: the pump shell upper cover is also provided with a peeping cover for observing the lubricating condition in the pump body.
4. The hot end of the liquid nitrogen pump according to claim 1, wherein: the bearing is a cylindrical roller bearing.
5. The hot end of the liquid nitrogen pump according to claim 1, wherein: the lower part of the bearing seat is connected with the upper cover of the bearing seat through a connecting stud, and the assembly surface of the lower part of the bearing seat and the upper cover of the bearing seat and the central line of the bearing seat hole are on the same plane.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038375 | 2017-01-19 | ||
| CN2017100383750 | 2017-01-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107061216A CN107061216A (en) | 2017-08-18 |
| CN107061216B true CN107061216B (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710427782.0A Active CN107061216B (en) | 2017-01-19 | 2017-06-08 | Liquid nitrogen pump hot junction |
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| CN (1) | CN107061216B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547766A (en) * | 2018-05-29 | 2018-09-18 | 烟台杰瑞石油装备技术有限公司 | A kind of liquid nitrogen pump power end assembly |
| CN112412777A (en) * | 2020-12-01 | 2021-02-26 | 烟台杰瑞石油装备技术有限公司 | Lubricating system for plunger pump and plunger pump |
| CN114001138A (en) * | 2021-10-26 | 2022-02-01 | 南京六煤机械有限公司 | Crankshaft based on multi-point support and large-flow emulsion pump station |
| CN113864179A (en) * | 2021-11-09 | 2021-12-31 | 黄秀芳 | Reciprocating pump coil joint oil inlet channel and connecting structure |
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| CN201306275Y (en) * | 2008-12-02 | 2009-09-09 | 江苏大学 | Crankshaft connecting rod movement device |
| CN202187877U (en) * | 2010-06-21 | 2012-04-11 | 法伍克赖奥迈科股份有限公司 | Driving unit of reciprocating piston pump |
| CN102889191A (en) * | 2011-07-21 | 2013-01-23 | 烟台杰瑞石油装备技术有限公司 | Plunger pump used for pumping ultralow-temperature liquid nitrogen |
| CN203809273U (en) * | 2013-12-12 | 2014-09-03 | 北京中清能发动机技术有限公司 | Reciprocating type plunger pump |
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| GB447426A (en) * | 1934-11-24 | 1936-05-19 | Bromilow & Edwards Ltd | Improvements relating to hydraulic and like pumps |
| CN201953705U (en) * | 2011-03-18 | 2011-08-31 | 重庆齿轮箱有限责任公司 | Combined bearing for vertical planetary gear box of nuclear power circulating water pump |
| CN106089617B (en) * | 2016-08-02 | 2018-09-28 | 山东科瑞泵业有限公司 | A kind of drilling mud shaking pump |
| CN206957890U (en) * | 2017-01-19 | 2018-02-02 | 山东科瑞泵业有限公司 | A kind of liquid nitrogen pump hot junction |
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2017
- 2017-06-08 CN CN201710427782.0A patent/CN107061216B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201306275Y (en) * | 2008-12-02 | 2009-09-09 | 江苏大学 | Crankshaft connecting rod movement device |
| CN202187877U (en) * | 2010-06-21 | 2012-04-11 | 法伍克赖奥迈科股份有限公司 | Driving unit of reciprocating piston pump |
| CN102889191A (en) * | 2011-07-21 | 2013-01-23 | 烟台杰瑞石油装备技术有限公司 | Plunger pump used for pumping ultralow-temperature liquid nitrogen |
| CN203809273U (en) * | 2013-12-12 | 2014-09-03 | 北京中清能发动机技术有限公司 | Reciprocating type plunger pump |
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| CN107061216A (en) | 2017-08-18 |
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Address after: 257100 Shengli Industrial Zone, Dongying District, Shandong, Dongying Patentee after: Shandong Kerui oil and gas equipment Co.,Ltd. Address before: 257000 Shandong city of Dongying province No. 1002 East Xi Liu Lu Patentee before: SHANDONG KERUI PUMP Co.,Ltd. |