CN201043513Y - Synchronous returning rinsing oil isolation structure of particle coal liquid medium reciprocating pump - Google Patents
Synchronous returning rinsing oil isolation structure of particle coal liquid medium reciprocating pump Download PDFInfo
- Publication number
- CN201043513Y CN201043513Y CNU2007200692578U CN200720069257U CN201043513Y CN 201043513 Y CN201043513 Y CN 201043513Y CN U2007200692578 U CNU2007200692578 U CN U2007200692578U CN 200720069257 U CN200720069257 U CN 200720069257U CN 201043513 Y CN201043513 Y CN 201043513Y
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- Prior art keywords
- plunger
- reciprocating pump
- isolation structure
- washing
- seal box
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- Reciprocating Pumps (AREA)
Abstract
The utility model relates to a synchronous return washing oil isolation structure of a granular coal slurry medium reciprocating pump, which comprises a piston, a pump body, a seal box, a seal box washing sleeve, a high-pressure washing oil injection orifice and an auxiliary seal box, wherein, the seal box washing sleeve is of a double-screw thread structure, and a cleaning oil inlet and a cleaning oil outlet are arranged between the high-pressure washing oil injection orifice and the auxiliary seal box. Compared with the prior art, the utility model can greatly reduce the quantity of granular coal slurry medium washing liquid, improve the washing efficiency of the washing liquid and increase the service life of the seal box.
Description
Technical field
The utility model relates to the reciprocating pump flushing oil isolation structure that use in fields such as a kind of oil, chemical industry, generating, especially relates to a kind of flushing oil isolation structure of particle coal slurry medium reciprocating pump.
Background technique
Reciprocating pump is a kind of of displacement pump, is made up of the pump housing, plunger, sealed letter, liquid suction valve and driving mechanism.Reciprocating pump is with the to-and-fro motion in the pump housing of its plunger, the swept volume of the airtight fluid cylinder of periodic variation, periodically will be sucked in the active chamber through liquid sucting valve by the liquor charging body, in the displacement of air-tight state lower plunger, give fed sheet of a media with the energy transfer of prime mover, make by the pressure of liquor charging body directly to raise, after reaching required force value, through liquid discharging valve medium is entered pipe-line system, repeat said process, promptly finish the conveying of liquid.In this process, small amount of liquid can leak out the pump housing through sealed letter when high pressure.
Prior art is provided with the total travel flushing to carrying particle slip sealed letter place, and supporting washing solution tri-plunger high pressure pump, washing solution pressure are all the time than the high 2～5bar of particle slip head pressure.All the plunger sealed letter is washed no matter still discharge the particle slip, its role is to: 1. avoid the particle slip to enter in sealed letter and the plunger, destroy sealed letter in the main pump suction; 2. the slipper seal to plunger is lubricated; 3. sealed letter is cooled off.The general flow of fluid-pump of configuration is got 8%～10% main flow, adds orifice plate on the pressure employing flushing line and controls, if flushing dose is less than 6%, causes that then pump seal lost efficacy.Most of granule stock pumps do not limit flushing dose, require 8%～10% as chemical industry water coal slurry medium washing solution water flow, and power plant's ash coal slurry medium washing solution water flow does not limit.
The flushing match equipment of prior art is simple, but its flushing dose is big, is 8%～10% main flow, therefore can't be applicable to the technology that some requires the restriction flushing dose.
DCL/Direct coal liquefaction technology is that China is for solving the new process that the oil problem is developed, need to adopt coal slurry medium (solid weight concentration is 25%～52%) reciprocating pump of High Temperature High Pressure in this tooling, for guaranteeing reciprocating pump working life, the reciprocating pump that needs the configuration flushing mechanism, washing solution is neutral viscosity liquefied coal coil, owing to be the coal oil-producing technique, technological requirement pump flush oil mass is the smaller the better, requires flushing dose≤3% main flow.To this, aforementioned sealed letter flushing mechanism (as shown in Figure 1) just can't be suitable for.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of flushing liquid measure that can significantly reduce in order to overcome the defective that exists in the prior art, improves flush efficiency, improves the synchronous backhaul flushing oil isolation structure of the particle coal slurry medium reciprocating pump of sealed letter operating life.
The purpose of this utility model can be achieved through the following technical solutions: the synchronous backhaul flushing oil isolation structure of particle coal slurry medium reciprocating pump, comprise plunger, the pump housing, sealed letter, sealed letter irrigating sleeve, high pressure washing oil inlet, auxiliary seal letter, it is characterized in that, described sealed letter irrigating sleeve is two worm structures, is provided with wash oil between described high pressure washing oil inlet and the auxiliary seal letter and imports and exports.
Supporting one the three plunger flushingpump of three plunger seals of described reciprocating pump, each flushingpump plunger case are to plunger seal of reciprocating pump, and two pumps adopt an axle, 180 ° of a corresponding plunger crankshaft crank with reciprocating pump of plunger of flushingpump phase differences.
Compared with prior art, the utility model significantly reduces particle slip medium flushing liquid measure, only be≤2%, go for requiring to limit the technology of flushing dose, simultaneously flushing is packed into the capable washing solution flush efficiency that improves, and wash oil is set imports and exports, coupled columns edge beyond the Great Wall cleans, and plays cooling, lubrication, improves the operating life of plunger seal letter.
Description of drawings
Fig. 1 is the schematic representation of existing flushing oil isolation structure;
Fig. 2 is the schematic representation of the utility model flushing oil isolation structure.
Embodiment
The utility model sealed letter place is provided with by backhaul injects flushing mechanism, supporting one the three plunger flushingpump of three plunger seals of shurry pump, each flushingpump plunger case is to plunger seal of shurry pump, two pumps adopt an axle, 180 ° of a corresponding plunger crankshaft crank with shurry pump of plunger of flushingpump phase differences.When the shurry pump plunger when sucking slip, the flushingpump plunger action seals the shurry pump plunger packing and washes, be that backhaul injection flushing oil will play plunger and Sealing and the both strong transmission of coal slurry medium, oily Isolated Shield effect is arranged again, make the coal slurry medium be difficult to sneak in plunger and the Sealing, the while plunger is got back lubricated, the working life of improving plunger and Sealing greatly; When the shurry pump plunger when discharging slip, the flushingpump plunger action sucks flushing oil, sealing is not washed to the shurry pump plunger packing, so just reduces half flushing oil mass.
The sealed letter irrigating sleeve is designed to two worm structure forms, and the gap reduces 10%～20%, can guarantee better like this flushing is packed into the omnidistance flushing of row, does not stay the dead angle, and the gap is more little, and flushing dose is few more.
The contrast drawings and the specific embodiments are described further the utility model below.
As shown in Figure 2, a kind of synchronous backhaul flushing oil isolation structure of particle coal slurry medium reciprocating pump, this structure comprises plunger 1, the pump housing 2, sealed letter 3, sealed letter irrigating sleeve 4, high pressure washing oil inlet 5, auxiliary seal letter 6, described sealed letter irrigating sleeve 4 is two worm structures, be provided with wash oil between described high pressure washing oil inlet 5 and the auxiliary seal letter 6 and import and export 7,8; Supporting one the three plunger flushingpump of three plunger seals of described reciprocating pump, each flushingpump plunger case are to plunger seal of reciprocating pump, and two pumps adopt an axle, 180 ° of a corresponding plunger crankshaft crank with reciprocating pump of plunger of flushingpump phase differences; When described reciprocating pump plunger 1 sucked slip, the flushingpump plunger action was washed reciprocating pump plunger seal letter 3, and when reciprocating pump plunger 1 was discharged slip, the flushingpump plunger action sucked flushing oil, reciprocal plunger seal letter 3 is not washed.
Claims (2)
1. the synchronous backhaul flushing oil isolation structure of particle coal slurry medium reciprocating pump, comprise plunger, the pump housing, sealed letter, sealed letter irrigating sleeve, high pressure washing oil inlet, auxiliary seal letter, it is characterized in that, described sealed letter irrigating sleeve is two worm structures, is provided with wash oil between described high pressure washing oil inlet and the auxiliary seal letter and imports and exports.
2. the synchronous backhaul flushing oil isolation structure of particle coal slurry medium reciprocating pump according to claim 1, it is characterized in that, supporting one the three plunger flushingpump of three plunger seals of described reciprocating pump, each flushingpump plunger case is to plunger seal of reciprocating pump, two pumps adopt an axle, 180 ° of a corresponding plunger crankshaft crank with reciprocating pump of plunger of flushingpump phase differences.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200692578U CN201043513Y (en) | 2007-04-24 | 2007-04-24 | Synchronous returning rinsing oil isolation structure of particle coal liquid medium reciprocating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200692578U CN201043513Y (en) | 2007-04-24 | 2007-04-24 | Synchronous returning rinsing oil isolation structure of particle coal liquid medium reciprocating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201043513Y true CN201043513Y (en) | 2008-04-02 |
Family
ID=39258407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200692578U Expired - Lifetime CN201043513Y (en) | 2007-04-24 | 2007-04-24 | Synchronous returning rinsing oil isolation structure of particle coal liquid medium reciprocating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201043513Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653547A (en) * | 2015-02-15 | 2015-05-27 | 常州海宏液压设备有限公司 | Self-cleaning silt-resistant durable active drag head hydraulic oil cylinder |
| CN108167176A (en) * | 2018-01-30 | 2018-06-15 | 浙江大农实业股份有限公司 | The stuffing-box of high-pressure plunger pump with self-cleaning function |
| CN108266368A (en) * | 2018-01-30 | 2018-07-10 | 浙江大农实业股份有限公司 | 100KW grade high-pressure plunger pumps with self-cleaning function |
| US10287522B2 (en) | 2013-01-31 | 2019-05-14 | General Electric Company | System and method for preparing coal water slurry |
-
2007
- 2007-04-24 CN CNU2007200692578U patent/CN201043513Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10287522B2 (en) | 2013-01-31 | 2019-05-14 | General Electric Company | System and method for preparing coal water slurry |
| CN104653547A (en) * | 2015-02-15 | 2015-05-27 | 常州海宏液压设备有限公司 | Self-cleaning silt-resistant durable active drag head hydraulic oil cylinder |
| CN108167176A (en) * | 2018-01-30 | 2018-06-15 | 浙江大农实业股份有限公司 | The stuffing-box of high-pressure plunger pump with self-cleaning function |
| CN108266368A (en) * | 2018-01-30 | 2018-07-10 | 浙江大农实业股份有限公司 | 100KW grade high-pressure plunger pumps with self-cleaning function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080402 |
|
| CX01 | Expiry of patent term |