CN101799005B - Circulating oil path control system of middle or high pressure oil-injecting screw unit - Google Patents

Circulating oil path control system of middle or high pressure oil-injecting screw unit Download PDF

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CN101799005B
CN101799005B CN 201010152926 CN201010152926A CN101799005B CN 101799005 B CN101799005 B CN 101799005B CN 201010152926 CN201010152926 CN 201010152926 CN 201010152926 A CN201010152926 A CN 201010152926A CN 101799005 B CN101799005 B CN 101799005B
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oil
valve
joint chair
special
low pressure
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CN101799005A (en
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赵仪田
杨国健
谢志强
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Wuxi Xiya Compressor Co ltd
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Wuxi Compressor Co Ltd
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Abstract

The invention provides a circulating oil path control system of a middle or high pressure oil-injecting screw unit. The circulating oil path control system of the unit is not only simple, but also ensures the functionality, the practicability and the generality. The circulating oil path control system comprises a two-stage compressed oil-injecting screw main machine, an oil-gas separator and an oil filter assembly and is characterized by also comprising an oil cut-off valve, a pressure reducing valve and a special joint seat; the oil-gas separator is communicated with an inlet of the oil filter assembly through an oil tube; an outlet of the oil filter assembly is connected with an inlet of the oil cut-off valve; an output of the oil cut-off valve is connected with an inlet of the special joint seat; the pressure reducing valve is supported on the special joint seat; a pipeline inside the special joint seat is communicated with a pipeline inside the pressure reducing valve; the external of the special joint seat is respectively connected with a corresponding oil injecting port of the two-stage compressed oil-injecting screw main machine; and a pressure tapping point of an exhaust port on a two-stage main machine of the two-stage compressed oil-injecting screw main machine is conducted with a control switch of the oil cut-off valve.

Description

A kind of mesohigh oil-injection screw unit circulating oil circuit control system
Technical field
The present invention relates to exhaust end base of oil injection threaded bolt circulating oil path control technique field, be specially a kind of mesohigh oil-injection screw unit circulating oil circuit control system.
Background technique
Mesohigh screw rod unit refers to exhaust pressure at 1.8~2.5MPa even the exhaust end base of oil injection threaded bolt unit more than the 3.5MPa, and this unit has following characteristics: one, atm number, high pressure; Two, generally adopt the exhaust end base of oil injection threaded bolt main frame of two stage compression, drive the two-stage main frame by single input shaft.Lubricant oil compression after mixes with gas after one-level main frame jet sprays into directly enters the secondary main frame from an one-level main frame row mouthful discharge and compresses, and finally discharges from secondary main exhaust mouth.Have the compression efficiency height, avoided that the single-stage pressure ratio is high, efficient is low, wasted work is large, the final high shortcoming of delivery temperature, energy loss-rate single stage compression reduce by 10~15% approximately; Three, according to lubricated needs, the relevant lubricating point of main frame need inject the lubricant oil of different pressures.
Fig. 1 is the structural representation of the exhaust end base of oil injection threaded bolt main frame of existing two stage compression, it comprises return opening 1, one-level main exhaust side lubricant oil decanting point 2, secondary main exhaust side lubricant oil decanting point 3, gear box lubricating oil decanting point 4, main jet oil-in 5, secondary main exhaust mouth pressure point 6, one-level main exhaust side lubricant oil decanting point 2 wherein, gear box lubricating oil decanting point 4, the lubricant oil that main jet oil-in 5 is injected is low-pressure lubricant oil with respect to one-level main exhaust pressure, and secondary main exhaust side lubricant oil decanting point 3 is high pressure lubricant oil with respect to secondary main exhaust pressure.
In the prior art, in order to ensure the lubrication oil circulation of exhaust end base of oil injection threaded bolt unit, common unit is nothing more than adopting following several modes: one, screw host carries the oil pump assembly, and by host driven, it is that enforced lubricating oil circulates that main frame one rotates; Two, unit additional configuration oil pump is driven by separate electrical motor, finishes lubrication oil circulation by electrical control; Three, unit oil-less pump drives lubricant oil by system pressure and circulates.
Carry the unit that oil pump assembly or unit additional configuration oil pump drive lubrication oil circulation for screw host, its defective is that set structure is complicated, and power consumption increases, and the unit likelihood of failure increases; Although and it is structurally fairly simple to drive the unit of lubricant oil by system pressure, the fault point is few, but need to realize flow control at each lubricant oil decanting point configure dedicated decompression nozzle, throttle pipe or valve, need in circulation oil line system, increase the break-make that oil cut-off valve or other similar functions element are realized circulating oil path simultaneously.
Summary of the invention
For the problems referred to above, the invention provides a kind of mesohigh oil-injection screw unit circulating oil circuit control system, it makes the simple while of unit circulation oil line system, guarantees functional, practicability, versatility.
Its technological scheme is such: it comprises the exhaust end base of oil injection threaded bolt main frame of two stage compression, deaerator, the oil strainer assembly, it is characterized in that: it also comprises oil cut-off valve, reduction valve, special-purpose joint chair, described deaerator is communicated with the import of described oil strainer assembly by oil pipe, the outlet of described oil strainer assembly connects described oil cut-off valve import, described oil cut-off valve outlet connects the import of described special-purpose joint chair, described reduction valve is supported on the described special-purpose joint chair, pipeline and described reduction valve internal duct in the described special-purpose joint chair communicate, described special-purpose joint chair outside connects respectively the corresponding pouring orifice of the exhaust end base of oil injection threaded bolt main frame of described two stage compression, the control switch of the described oil cut-off valve of secondary main exhaust mouth pressure point conducting on the exhaust end base of oil injection threaded bolt main frame of described two stage compression.
It is further characterized in that: described special-purpose joint chair comprises high pressure oil entrance, high-voltage oil cavity, low pressure oil pocket, low pressure oil outlet, described high-voltage oil cavity is communicated with the import of described reduction valve, the outlet of described reduction valve is communicated with described low pressure oil pocket, the outer wall of described special-purpose joint chair has high pressure oil outlet, low pressure oil outlet, described high pressure oil outlet is communicated with described high-voltage oil cavity, and described low pressure oil outlet is communicated with described low pressure oil pocket;
Secondary main exhaust mouth pressure point on the exhaust end base of oil injection threaded bolt main frame of described two stage compression connects the control switch of described oil cut-off valve by control oil pipe;
The bottom of described reduction valve is installed on the fixed hole of the upper surface of described special-purpose joint chair by the bolt correspondence, and the bottom of described reduction valve is positioned the pin-and-hole of described special-purpose joint chair by the bearing pin correspondence;
Described special-purpose joint chair has the control return opening, the described reduction valve of described control return opening conducting unload pressure oil groove, described control return opening is connected to the exhaust end base of oil injection threaded bolt main frame of two stage compression by pipeline;
The exhaust end base of oil injection threaded bolt main frame of two stage compression comprises return opening, one-level main exhaust side lubricant oil decanting point, secondary main exhaust side lubricant oil decanting point, gear box lubricating oil decanting point, main jet oil-in, secondary main exhaust mouth pressure point, described low pressure oil outlet is communicated with described main jet oil-in by low pressure fuel pipe, described low pressure oil outlet is communicated with respectively one-level main exhaust side lubricant oil decanting point, gear box lubricating oil decanting point by low pressure fuel pipe, and described high pressure oil outlet is communicated with secondary main exhaust side lubricant oil decanting point by high-pressure oil pipe;
The described oil pipe at the thermostat valve after being connected in parallel, the two ends of cooler connects respectively the import of described deaerator, described oil filtration assembly;
The jointing of the exhaust end base of oil injection threaded bolt main frame of described two stage compression, reduction valve, deaerator, oil strainer assembly, oil cut-off valve, special-purpose joint chair, thermostat valve, cooler is equipped with fluid coupling.
After adopting said system of the present invention, owing to added oil cut-off valve, and the control switch of the described oil cut-off valve of secondary main exhaust mouth pressure point conducting on the exhaust end base of oil injection threaded bolt main frame of described two stage compression, secondary main exhaust mouth disposes one-way valve, and oil cut-off valve will in time cut out and cut off circulating oil path; Realize the break-make of circulating oil path with the pressure-driven oil cut-off valve of secondary main exhaust mouth pressure point, controllability is strong; And the setting of special-purpose joint chair, all are integrated on the special-purpose joint chair with the pipeline that each lubricating point of exhaust end base of oil injection threaded bolt main frame of two stage compression is connected, and its structure is simpler, compact, has reduced the fault point; Because reduction valve, oil cut-off valve, special-purpose joint chair, system pressure drive the setting of circulating oil path, the exhaust end base of oil injection threaded bolt main frame band oil pump that system need not to arrange independent oil pump assembly or two stage compression drives oil circuit, and system is simple, practical; Circulation oil line system need not to use special-purpose decompression nozzle, throttle pipe or stop valve in circulation oil line system, only need the conventional fluid coupling of configuration to get final product, and has better versatility, applicable different type of machines; Described system makes the simple while of unit circulation oil line system, guarantees functional, practicability, versatility.
Description of drawings
Fig. 1 is for being the structural representation of the exhaust end base of oil injection threaded bolt main frame of existing two stage compression;
Fig. 2 is plan view structural representation of the present invention;
Fig. 3 is the assembling schematic representation of reduction valve of the present invention and special-purpose joint chair;
Fig. 4 is the plan view structural representation of special-purpose joint chair among the present invention.
Embodiment
See Fig. 2, Fig. 3, Fig. 4, the present invention includes the exhaust end base of oil injection threaded bolt main frame 7 of two stage compression, reduction valve 8, deaerator 9, oil strainer assembly 10, oil cut-off valve 11, special-purpose joint chair 12, deaerator 9 is communicated with oil strainer assembly import 13 by oil pipe 33, the outlet 14 of oil strainer assembly 10 connects oil cut-off valve import 15, oil cut-off valve outlet 16 connects the import of special-purpose joint chair 12, reduction valve 8 is supported on the special-purpose joint chair 12, pipeline and reduction valve 8 internal duct in the special-purpose joint chair 12 communicate, special-purpose joint chair 12 outsides connect respectively the corresponding pouring orifice of the exhaust end base of oil injection threaded bolt main frame 7 of two stage compression, and the secondary main exhaust mouth pressure point 6 on the exhaust end base of oil injection threaded bolt main frame 7 of two stage compression connects the control switch 17 of oil cut-off valve 11 by control oil pipe 36;
Special-purpose joint chair 12 comprises high pressure oil entrance 18, high-voltage oil cavity 19, low pressure oil pocket 20, low pressure oil outlet 21, high-voltage oil cavity 19 is communicated with reduction valve import 22 by passage 34, reduction valve outlet 23 is communicated with low pressure oil pocket 20 by passage 35, the outer wall of special-purpose joint chair 12 has high pressure oil outlet 24, low pressure oil outlet 25, high pressure oil outlet 24 is communicated with high-voltage oil cavity 19, and low pressure oil outlet 25 is communicated with low pressure oil pocket 20;
The bottom of reduction valve 8 (belongs to existing mature structure by bolt, not shown in FIG.) correspondence is installed on the fixed hole 26 of the upper surface of special-purpose joint chair 12, the bottom of reduction valve 8 is positioned the pin-and-hole 27 of special-purpose joint chair 12 by bearing pin (belonging to existing mature structure, not shown in FIG.) correspondence;
Special-purpose joint chair 12 is equipped with control return opening 28, control return opening 28 conducting reduction valve 8 unload pressure oil groove 39, control return opening 28 is connected to (belonging to existing mature structure, not shown in FIG.) the exhaust end base of oil injection threaded bolt main frame 7 of two stage compression by pipeline;
The exhaust end base of oil injection threaded bolt main frame of two stage compression comprises return opening 1, one-level main exhaust side lubricant oil decanting point 2, secondary main exhaust side lubricant oil decanting point 3, gear box lubricating oil decanting point 4, main jet oil-in 5, secondary main exhaust mouth pressure point 6, low pressure oil outlet 21 is communicated with main jet oil-in 5 by low pressure fuel pipe 29, low pressure oil outlet 25 is communicated with respectively one-level main exhaust side lubricant oil decanting point 2, gear box lubricating oil decanting point 4 by low pressure fuel pipe 29, and high pressure oil outlet 24 is communicated with secondary main exhaust side lubricant oil decanting point 3 by high-pressure oil pipe 30;
The oil pipe 33 at the thermostat valve 31 after being connected in parallel, the two ends of cooler 32 connects respectively deaerator 9, oil filters assembly import 13;
The jointing of the exhaust end base of oil injection threaded bolt main frame 7 of two stage compression, reduction valve 8, deaerator 9, oil strainer assembly 10, oil cut-off valve 11, special-purpose joint chair 12, thermostat valve 31, cooler 32 is equipped with fluid coupling (for existing mature technology, not shown in FIG.); The direction of arrow among Fig. 2 is the flow direction of lubricant oil; Among Fig. 2 37 for gas mixture enter deaerator passage, 38 for minimum pressure valve, 39 for safety valve, 40 for secondary main exhaust mouth.
Its working principle is as follows: the passage 37 that the gas mixture of discharging after exhaust end base of oil injection threaded bolt main frame 7 compression through two stage compression enters deaerator by gas mixture enters deaerator 9 to be separated, pressurized gas are discharged through minimum pressure valve 38, lubricant oil after the separation amasss the bottom at deaerator 9, under the effect of system pressure, enter cooler 32 or thermostat valve 31 through oil pipe 33, finally all to arrive in the oil strainer assembly 10 through lubricant oil that supercooler 32 is cooled or through the lubricant oil of thermostat valve 31 to be filtered, lubricant oil after the filtration enters the high-voltage oil cavity 19 of special-purpose joint chair 12 by oil cut-off valve 11, part high pressure oil is by high pressure oil outlet 24, high-pressure oil pipe 30 injects secondary main exhaust side lubricant oil decanting point 3, other high pressure oil is communicated with reduction valve import 22 by passage 34, after high pressure oil flows through reduction valve 8 inside afterwards, from reduction valve outlet 23, passage 35 flows into low pressure oil pocket 20, part low pressure oil is by low pressure oil outlet 21, low pressure fuel pipe 29 flows into main jet oil-in 5, and other low pressure oil is by low pressure oil outlet 25, low pressure fuel pipe 29 flows into respectively one-level main exhaust side lubricant oil decanting point 2, gear box lubricating oil decanting point 4;
The gas-liquid mixture of secondary main exhaust mouth pressure point 6 opens oil cut-off valve 11 by the control switch 17 that control oil pipe 36 flows to oil cut-off valve 11, guarantee that lubricant oil in time arrives exhaust end base of oil injection threaded bolt main frame 7 each lubricating point of two stage compression, secondary main exhaust mouth 40 disposes one-way valve (belonging to existing maturing appts), in case the exhaust end base of oil injection threaded bolt main frame 7 of two stage compression shuts down, secondary main exhaust mouth 40 will no longer include Output pressure, secondary main exhaust mouth pressure point 6 is consistent with secondary main exhaust mouth 40 pressure, secondary main exhaust mouth pressure point 6 does not have gas-liquid mixture and flows to the control switch 17 of oil cut-off valve 11 by control valve, and oil cut-off valve 11 will in time cut out and cut off circulating oil path.

Claims (7)

1. mesohigh oil-injection screw unit circulating oil circuit control system, it comprises the exhaust end base of oil injection threaded bolt main frame of two stage compression, deaerator, the oil strainer assembly, it is characterized in that: it also comprises oil cut-off valve, reduction valve, special-purpose joint chair, described deaerator is communicated with the import of described oil strainer assembly by oil pipe, the outlet of described oil strainer assembly connects described oil cut-off valve import, described oil cut-off valve outlet connects the import of described special-purpose joint chair, described reduction valve is supported on the described special-purpose joint chair, pipeline and described reduction valve internal duct in the described special-purpose joint chair communicate, described special-purpose joint chair outside connects respectively the corresponding pouring orifice of the exhaust end base of oil injection threaded bolt main frame of described two stage compression, the control switch of the described oil cut-off valve of secondary main exhaust mouth pressure point conducting on the exhaust end base of oil injection threaded bolt main frame of described two stage compression; Described special-purpose joint chair comprises high pressure oil entrance, high-voltage oil cavity, low pressure oil pocket, low pressure oil outlet, described high-voltage oil cavity is communicated with the import of described reduction valve, the outlet of described reduction valve is communicated with described low pressure oil pocket, the outer wall of described special-purpose joint chair has high pressure oil outlet, low pressure oil outlet, described high pressure oil outlet is communicated with described high-voltage oil cavity, and described low pressure oil outlet is communicated with described low pressure oil pocket.
2. a kind of mesohigh oil-injection screw unit circulating oil circuit control system according to claim 1, it is characterized in that: the secondary main exhaust mouth pressure point on the exhaust end base of oil injection threaded bolt main frame of described two stage compression connects the control switch of described oil cut-off valve by control oil pipe.
3. a kind of mesohigh oil-injection screw unit circulating oil circuit control system according to claim 1, it is characterized in that: the bottom of described reduction valve is installed on the fixed hole of the upper surface of described special-purpose joint chair by the bolt correspondence, and the bottom of described reduction valve is positioned the pin-and-hole of described special-purpose joint chair by the bearing pin correspondence.
4. a kind of mesohigh oil-injection screw unit circulating oil circuit control system according to claim 3, it is characterized in that: described special-purpose joint chair has the control return opening, the described reduction valve of described control return opening conducting unload pressure oil groove, described control return opening is connected to the gear-box of the exhaust end base of oil injection threaded bolt main frame inside of two stage compression by pipeline.
5. a kind of mesohigh oil-injection screw unit circulating oil circuit control system according to claim 1, it is characterized in that: the exhaust end base of oil injection threaded bolt main frame of two stage compression comprises return opening, one-level main exhaust side lubricant oil decanting point, secondary main exhaust side lubricant oil decanting point, the gear box lubricating oil decanting point, the main jet oil-in, secondary main exhaust mouth pressure point, described low pressure oil outlet is communicated with described main jet oil-in by low pressure fuel pipe, described low pressure oil outlet is communicated with respectively one-level main exhaust side lubricant oil decanting point by low pressure fuel pipe, the gear box lubricating oil decanting point, described high pressure oil outlet is communicated with secondary main exhaust side lubricant oil decanting point by high-pressure oil pipe.
6. a kind of mesohigh oil-injection screw unit circulating oil circuit control system according to claim 1 is characterized in that: the described oil pipe at the thermostat valve after being connected in parallel, the two ends of cooler connects respectively the import that described deaerator, described oil filter assembly.
7. a kind of mesohigh oil-injection screw unit circulating oil circuit control system according to claim 6, it is characterized in that: the jointing of the exhaust end base of oil injection threaded bolt main frame of described two stage compression, reduction valve, deaerator, oil strainer assembly, oil cut-off valve, special-purpose joint chair, thermostat valve, cooler is equipped with fluid coupling.
CN 201010152926 2010-04-22 2010-04-22 Circulating oil path control system of middle or high pressure oil-injecting screw unit Active CN101799005B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110345048A (en) * 2019-07-15 2019-10-18 中铁隧道集团三处有限公司 A kind of air compressor system
CN115507034B (en) * 2022-10-24 2023-03-31 冰轮环境技术股份有限公司 Lubricating oil circulation system of oil injection screw compressor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5803715A (en) * 1991-10-14 1998-09-08 Cash Engineering Research Pty. Ltd. Inlet control combination for a compressor system
JP2007255864A (en) * 2006-03-27 2007-10-04 Mitsubishi Electric Corp Two-stage compression type refrigerating device
CN201412336Y (en) * 2009-06-22 2010-02-24 浙江志高机械有限公司 Oil-line control system of two-stage compression twin-screw air compressor
CN201705666U (en) * 2010-04-22 2011-01-12 无锡压缩机股份有限公司 Medium and high pressure oil-injection screw unit circulating oil circuit control structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5803715A (en) * 1991-10-14 1998-09-08 Cash Engineering Research Pty. Ltd. Inlet control combination for a compressor system
JP2007255864A (en) * 2006-03-27 2007-10-04 Mitsubishi Electric Corp Two-stage compression type refrigerating device
CN201412336Y (en) * 2009-06-22 2010-02-24 浙江志高机械有限公司 Oil-line control system of two-stage compression twin-screw air compressor
CN201705666U (en) * 2010-04-22 2011-01-12 无锡压缩机股份有限公司 Medium and high pressure oil-injection screw unit circulating oil circuit control structure

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Effective date of registration: 20181108

Address after: 214000 No. 199, Hong Xie Road, hung Shan Street, new Wu District, Wuxi, Jiangsu

Patentee after: WUXI XIYA COMPRESSOR CO.,LTD.

Address before: 214145 Jiangsu Wuxi new town Photoelectric Industrial Park 1

Patentee before: WUXI COMPRESSOR Co.,Ltd.

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Denomination of invention: A circulating oil circuit control system for medium and high pressure fuel injection screw units

Granted publication date: 20130313

Pledgee: Wuxi Xinwu sub branch of Agricultural Bank of China Ltd.

Pledgor: WUXI XIYA COMPRESSOR CO.,LTD.

Registration number: Y2024980010540

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