CN100425839C - Single-unit two-stage screw refrigeration compressor set and using method therefor - Google Patents
Single-unit two-stage screw refrigeration compressor set and using method therefor Download PDFInfo
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- CN100425839C CN100425839C CNB2006100702739A CN200610070273A CN100425839C CN 100425839 C CN100425839 C CN 100425839C CN B2006100702739 A CNB2006100702739 A CN B2006100702739A CN 200610070273 A CN200610070273 A CN 200610070273A CN 100425839 C CN100425839 C CN 100425839C
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Abstract
The single machine dual screw compressor comprises a main motor (5) connecting with the machine through a coupler, air absorbing filter connecting with the machine's absorbing opening, exhaust of the middle cooling machine connecting with the high and low pressure joint pipe of the machine through middle filter, its exhaust connecting with the oil extractor, with a branch of the shell pass of the middle cooling machine connecting its tube pass, and the oil extractor connecting with the oil cooler. It can replace dual screw cooling compressor for low temperature cooling. It has eliminated a set of oil extractor, oil cooler, main motor with great reduction of cost. It is compact, with small land occupation and convenient for delivery and packing.
Description
Technical field
The present invention relates to a kind of brand-new single machine two-stage screw bolt refrigerant compressor group, and relate to its application process, belong to refrigeration technology field.
Background technique
Spiral Lobe Refrigeration Compressor in the cryogenic refrigerating system owing to operate under high pressure ratio, the big pressure reduction operating mode, adopts the single stage screw unit can make that refrigerating efficiency reduces greatly, and compressor reliability reduces.From Economy and reliability consideration, twin-stage occurs and matched the screw bolt refrigerant system, it is to make high and low press respectively with two Spiral Lobe Refrigeration Compressors, refrigeration working medium is compressed to intermediate pressure by low press, again with system in the medium temperature and medium pressure refrigerant gas that comes of interstage cooler be mixed into high-pressure unit and carry out secondary compression.High and low press has improved the compressor operating condition because pressure ratio, pressure reduction reduce, and because the cold specific refrigerating effect that increased of mistake of the highly pressurised liquid that interstage cooler comes out to condenser makes the coefficient of refrigeration of whole system improve.Yet from initial cost, the cost that obvious two twin-stages match unit will be higher than the cost of a single-stage unit, adds that boundary dimension is huge, and this has just restricted the application of two-bed system greatly.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, and a kind of brand-new single machine two-stage screw bolt refrigerant compressor group and application process thereof are provided.Technical problem to be solved is, can bring into play the advantage that above-mentioned twin-stage matches energy saving of system, can save cost to greatest extent again.
The technical solution adopted for the present invention to solve the technical problems is with as follows:
A kind of single machine two-stage screw bolt refrigerant compressor group comprises oil pump, air-breathing filter, coupling, main motor, oil separator, interstage cooler, oil cooler, operating console, oil strainer and intermediate filter, single machine two-stage screw bolt refrigerant compressor; The high pressure stage of single machine two-stage screw bolt refrigerant compressor drives between rotor with two of low pressure stages and connects by built-in coupling.The high pressure stage of single machine two-stage screw bolt refrigerant compressor comprises high pressure stage energy indicator, high pressure stage oil piston, the high pressure stage energy adjustment guiding valve that connects successively, also comprise high pressure stage suction end base, high pressure stage body, high pressure stage female rotor, high pressure stage male rotor and high pressure stage exhausting end base, wherein, high pressure stage female rotor, high pressure stage male rotor are installed in the high pressure stage housing of being made up of high pressure stage suction end base, high pressure stage body, high pressure stage exhausting end base; The low pressure stage of single machine two-stage screw bolt refrigerant compressor comprises low pressure stage energy adjustment guiding valve, low pressure stage oil piston, the low pressure stage energy indicator that connects successively, also comprise low pressure stage suction end base, low pressure stage body, low pressure stage female rotor, low pressure stage male rotor, low pressure stage exhausting end base, wherein, low pressure stage female rotor, low pressure stage male rotor are installed in the low pressure stage housing of suction end base, low pressure stage body, low pressure stage exhausting end base composition.
Main motor is connected with single machine two-stage screw bolt refrigerant compressor by coupling, air-breathing filter links to each other with the intakeport of single machine two-stage compressor, the steam outlet pipe of interstage cooler links to each other with the high and low pressure level connecting tube of single machine two-stage screw bolt refrigerant compressor by intermediate filter, the relief opening of single machine two-stage screw bolt refrigerant compressor links to each other with oil separator, the interstage cooler shell side has one to be connected with the tube side of interstage cooler along separate routes, and oil separator links to each other with oil cooler.
Main motor is imported power by coupling to single machine two-stage screw bolt refrigerant compressor, the low pressure stage that the low temperature and low pressure steam that comes from low service system enters behind air-breathing filter the single machine two-stage screw bolt refrigerant compressor is compressed, the high pressure stage that enters in the single machine two-stage screw bolt refrigerant compressor after the medium temperature and medium pressure gas that comes with interstage cooler after the compression mixes is compressed into high temperature and high pressure gas once more, enter oil separator, in oil separator, discharge through after the Oil-gas Separation.
The highly pressurised liquid that comes from cistern enters the interstage cooler shell side, draws one tunnel tube side that enters interstage cooler after the throttling step-down, and evaporation is after intermediate filter is filtered the back and the low pressure stage exhaust in the single machine two-stage screw bolt refrigerant compressor mixes; Remainder is crossed and is entered vaporizer after cold; Refrigerator oil in the oil separator is after oil cooler cooling, oil strainer filter, a part enters low pressure stage rotor chamber in the single machine two-stage screw bolt refrigerant compressor under the effect of pressure reduction, another part by the oil pump supercharging after bearing of compressor, axle envelope and equalizing piston place enter rotor chamber at different levels; Refrigerator oil in the rotor chamber with together compressed after the steam of suction mixes by the low pressure stage of unit two-stage screw bolt refrigerant compressor and high pressure stage after entered oil separator and carried out Oil-gas Separation.
Compared with the prior art the present invention has following good effect: (1), each component organically are integrated into a unit by getting in touch each other, make compact structure, and take up an area of for a short time, are convenient to transportation and install.(2), an integral body forming by two compressors of single machine two-stage screw bolt refrigerant compressor, has only a power intake, therefore on the unit constituent elements, reduce a cover oil separator, oil cooler, motor, greatly reduce cost than conventional two-stage screw unit.(3), the most of parts of single machine two-stage screw bolt refrigerant compressor use is the parts of two single stage screw refrigeration compressors, universal component degree height is suitable for producing in batches, also helps reducing design and drops into.
Description of drawings
Fig. 1 is the structural representation of single machine two-stage compressor bank of the present invention.
Fig. 2 is the schematic side view of single machine two-stage compressor bank of the present invention.
Fig. 3 is that the A of Fig. 2 is to view.
Fig. 4 is the structural representation of the single machine two-stage screw bolt refrigerant compressor among the present invention.
Fig. 5 is the A-A sectional view of Fig. 4.
Embodiment
Below in conjunction with accompanying drawing the present invention is elaborated.
As shown in Figure 1, 2, 3, single machine two-stage screw bolt refrigerant compressor 1, main motor 5 are installed on the oil separator 7, oil cooler 12 is installed on the oil separator 7 side bearings, and interstage cooler 11 is installed on the oil cooler 12, and operating console 13 is installed on the compressor bearing of oil separator 7.All parts are formed a single machine two-stage screw bolt refrigerant compressor group according to the inner link of flow process.The driving rotor (male rotor) of two independent high and low Spiral Lobe Refrigeration Compressors of arbitrarily downgrading connects transferring power by built-in coupling 24, makes it become a single machine two-stage screw bolt refrigerant compressor, and power is imported from the low pressure stage male rotor.
Fig. 4, single machine two-stage screw bolt refrigerant compressor shown in Figure 5 are the core components of this unit, and its critical piece has: high pressure stage energy indicator 16, high pressure stage oil piston 17, high pressure stage suction end base 18, high pressure stage energy adjustment guiding valve 19, high pressure stage body 20, high pressure stage female rotor 21, high pressure stage male rotor 22, high pressure stage exhausting end base 23 are formed high pressure stage.Low pressure stage suction end base 26, low pressure stage body 27, low pressure stage energy adjustment guiding valve 25, low pressure stage female rotor 28, low pressure stage male rotor 29, low pressure stage exhausting end base 30, low pressure stage oil piston 31, low pressure stage energy indicator 32 are formed low pressure stage.Low pressure stage male rotor 29 connects high pressure stage male rotor 22 and transmits driving force to it by built-in coupling 24.High pressure stage female rotor 21 and high pressure stage male rotor 22 and low pressure stage female rotor 28 and low pressure stage male rotor 29 are meshing with each other respectively, by stable drive ratio rotation, form active chamber with high pressure stage body 20, low pressure stage body 27 respectively.High pressure stage suction end base 18, high pressure stage exhausting end base 23, high pressure stage body 20, and low pressure stage suction end base 26, low pressure stage exhausting end base 30, low pressure stage body 27 on be respectively equipped with suction, relief opening and oilhole.The workflow of single machine two-stage compressor is during work: low temperature and low pressure steam enters from low pressure stage suction end base 26 and is discharged by low pressure stage exhausting end base 30 after the active chamber of forming with low pressure stage female rotor 28, low pressure stage male rotor 29 on the low pressure stage body 27 is compressed to intermediate pressure, enter high pressure stage suction end base 18 subsequently, and the active chamber of forming through high pressure stage body 20, high pressure stage female rotor 21, high pressure stage male rotor 22 is compressed into high temperature and high pressure gas, discharges through high pressure stage exhausting end base 23.Turnover by control high pressure stage oil piston 17, low pressure stage oil piston 31 both sides lubricant oil, change the pressure of oily piston both sides, driving high pressure stage energy adjustment guiding valve 19, low pressure stage energy adjustment guiding valve 25 is respectively moving in the rotor chamber separately, thereby change effective active length of rotor, realize the energy step-less adjustment of high and low pressure stage compressor.High pressure stage energy indicator 16, low pressure stage energy indicator 32 are indicated high and low energy position of arbitrarily downgrading respectively.
The concrete structure of single machine two-stage screw bolt refrigerant compressor 1 is that its high pressure stage drives between rotor with two of low pressure stages and connects by built-in coupling 24; Wherein, high pressure stage comprises high pressure stage energy indicator 16, high pressure stage oil piston 17, the high pressure stage energy adjustment guiding valve 19 that connects successively, also comprise high pressure stage suction end base 18, high pressure stage body 20, high pressure stage female rotor 21, high pressure stage male rotor 22 and high pressure stage exhausting end base 23, wherein, high pressure stage female rotor 21, high pressure stage male rotor 22 are installed in the high pressure stage housing of being made up of high pressure stage suction end base 18, high pressure stage body 20, high pressure stage exhausting end base 23; Low pressure stage comprises low pressure stage energy adjustment guiding valve 25, low pressure stage oil piston 31, the low pressure stage energy indicator 32 that connects successively, also comprise low pressure stage suction end base 26, low pressure stage body 27, low pressure stage female rotor 28, low pressure stage male rotor 29, low pressure stage exhausting end base 30, wherein, low pressure stage female rotor 28, low pressure stage male rotor 29 are installed in the low pressure stage housing of low pressure stage suction end base 26, low pressure stage body 27, low pressure stage exhausting end base 30 compositions.
The highly pressurised liquid that comes from cistern enters interstage cooler 11 shell sides, draws one tunnel tube side that enters interstage cooler 11 after the throttling step-down, and evaporation is after intermediate filter 14 filters the back and the low pressure stage exhaust in the unit screw bolt refrigerant compound compressor 1 mixes; Remainder is crossed and is entered vaporizer after cold.Refrigerator oil in the oil separator 7 is after oil cooler 12 coolings, oil strainer 8 filter, a part enters low pressure stage rotor chamber in the single machine two-stage compressor 1 under the effect of pressure reduction, another part by oil pump 9 superchargings after bearing of compressor, axle envelope and equalizing piston etc. locate to enter rotor chamber at different levels.Refrigerator oil in the rotor chamber with together compressed after the steam of suction mixes by the low pressure stage of unit two-stage screw bolt refrigerant compressor 1 and high pressure stage after entered oil separator 7 and carried out Oil-gas Separation, circulate successively.The effect of air-breathing safety check 3, venting check valve 6, line check valve 15 is to reverse when preventing compressor emergency shutdown.The effect of oil pressure adjusting valve 10 has been effects of adjusting oil pump 9 back pressure.
Claims (4)
1, a kind of single machine two-stage screw bolt refrigerant compressor group, comprise oil pump (9), air-breathing filter (2), coupling (4), main motor (5), oil separator (7), interstage cooler (11), oil cooler (12), operating console (13), oil strainer (8) and intermediate filter (14), it is characterized in that: also comprise single machine two-stage screw bolt refrigerant compressor (1); The high pressure stage of single machine two-stage screw bolt refrigerant compressor (1) drives between rotor with two of low pressure stages and connects by built-in coupling (24); High pressure stage comprises high pressure stage energy indicator (16), high pressure stage oil piston (17), the high pressure stage energy adjustment guiding valve (19) that connects successively, also comprise high pressure stage suction end base (18), high pressure stage body (20), high pressure stage female rotor (21), high pressure stage male rotor (22) and high pressure stage exhausting end base (23), wherein, high pressure stage female rotor (21), high pressure stage male rotor (22) are installed in the high pressure stage housing of being made up of high pressure stage suction end base (18), high pressure stage body (20), high pressure stage exhausting end base (23); Low pressure stage comprises low pressure stage energy adjustment guiding valve (25), low pressure stage oil piston (31), the low pressure stage energy indicator (32) that connects successively, also comprise low pressure stage suction end base (26), low pressure stage body (27), low pressure stage female rotor (28), low pressure stage male rotor (29), low pressure stage exhausting end base (30), wherein, low pressure stage female rotor (28), low pressure stage male rotor (29) are installed in the low pressure stage housing of low pressure stage suction end base (26), low pressure stage body (27), low pressure stage exhausting end base (30) composition.
2, single machine two-stage screw bolt refrigerant compressor group according to claim 1, it is characterized in that: main motor (5) is connected with single machine two-stage screw bolt refrigerant compressor (1) by coupling (4), air-breathing filter (2) links to each other with the intakeport of single machine two-stage compressor (1), the steam outlet pipe of interstage cooler (11) is by the height of intermediate filter (14) with single machine two-stage screw bolt refrigerant compressor (1), the low pressure stage connecting tube links to each other, the relief opening of single machine two-stage screw bolt refrigerant compressor (1) links to each other with oil separator (7), interstage cooler (11) shell side has one to be connected with the tube side of interstage cooler along separate routes, and oil separator (7) links to each other with oil cooler (12).
3, the using method of single machine two-stage screw bolt refrigerant compressor group according to claim 1 and 2, it is characterized in that: main motor (5) is imported power by coupling (4) to single machine two-stage screw bolt refrigerant compressor (1), the low pressure stage that the low temperature and low pressure steam that comes from low service system enters behind air-breathing filter (2) the single machine two-stage screw bolt refrigerant compressor (1) is compressed, the high pressure stage that enters in the single machine two-stage screw bolt refrigerant compressor (1) after the medium temperature and medium pressure gas that comes with interstage cooler (11) after the compression mixes is compressed into high temperature and high pressure gas once more, enter oil separator (7), in oil separator (7), discharge through after the Oil-gas Separation.
4, the using method of single machine two-stage screw bolt refrigerant compressor group according to claim 3, it is characterized in that: the highly pressurised liquid that comes from cistern enters interstage cooler (11) shell side, draw one tunnel tube side that enters interstage cooler (11) after the throttling step-down, evaporation is after intermediate filter (14) is filtered the back and the low pressure stage exhaust in the single machine two-stage screw bolt refrigerant compressor (1) mixes; Remainder is crossed and is entered vaporizer after cold; Refrigerator oil in the oil separator (7) is after oil cooler (12) cooling, oil strainer (8) filter, a part enters low pressure stage rotor chamber in the single machine two-stage screw bolt refrigerant compressor (1) under the effect of pressure reduction, another part by oil pump (9) supercharging after bearing of compressor, axle seals and the equalizing piston place enters rotor chamber at different levels; Refrigerator oil in the rotor chamber with together compressed after the steam of suction mixes by the low pressure stage of unit two-stage screw bolt refrigerant compressor (1) and high pressure stage after entered oil separator (7) and carried out Oil-gas Separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100702739A CN100425839C (en) | 2006-11-15 | 2006-11-15 | Single-unit two-stage screw refrigeration compressor set and using method therefor |
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| CNB2006100702739A CN100425839C (en) | 2006-11-15 | 2006-11-15 | Single-unit two-stage screw refrigeration compressor set and using method therefor |
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| CN1966982A CN1966982A (en) | 2007-05-23 |
| CN100425839C true CN100425839C (en) | 2008-10-15 |
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| CN102788021A (en) * | 2012-08-16 | 2012-11-21 | 大连亿斯德制冷设备有限公司 | Ammonia semi-enclosed screw refrigerating compressor unit |
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| CN103321910B (en) * | 2013-06-19 | 2016-01-13 | 西安交通大学 | A kind of intercooler unit of two-stage screw compressor and cooling means |
| CN103410733B (en) * | 2013-08-26 | 2015-10-28 | 天津商业大学 | High low pressure regulates the two-stage screw bolt refrigerant compressor of displacement simultaneously |
| CN105715548A (en) * | 2016-04-01 | 2016-06-29 | 浙江开山凯文螺杆机械有限公司 | Two-grade screw rod compressor with flexible slide valve |
| CN108167189A (en) * | 2018-03-05 | 2018-06-15 | 珠海格力电器股份有限公司 | Compressor and air conditioning unit |
| US11415342B2 (en) * | 2018-09-28 | 2022-08-16 | Daikin Industries, Ltd. | Multistage compression system |
| CN110397589B (en) * | 2019-08-26 | 2023-10-10 | 珠海格力电器股份有限公司 | Double-stage screw compressor with axial force balancing function and air conditioning unit |
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2006
- 2006-11-15 CN CNB2006100702739A patent/CN100425839C/en not_active Expired - Fee Related
Patent Citations (7)
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| JPH03121277A (en) * | 1989-10-05 | 1991-05-23 | Hitachi Ltd | Apparatus for separating and recovering oil of oil injection type two-stage compressor |
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| CN1966982A (en) | 2007-05-23 |
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