CN202326119U - Air compressor set for centrifugal compressor and piston-type compressor serially connected - Google Patents
Air compressor set for centrifugal compressor and piston-type compressor serially connected Download PDFInfo
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- CN202326119U CN202326119U CN2011204899009U CN201120489900U CN202326119U CN 202326119 U CN202326119 U CN 202326119U CN 2011204899009 U CN2011204899009 U CN 2011204899009U CN 201120489900 U CN201120489900 U CN 201120489900U CN 202326119 U CN202326119 U CN 202326119U
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Abstract
The utility model relates to an air compressor set for centrifugal compressor and piston-type compressor serially connected. The air compressor set comprises the centrifugal compressor and the piston-type compressor, wherein the centrifugal compressor is coaxially connected with a speed increaser which is connected with a first motor; the piston-type compressor is connected with a second motor; an outlet pipeline of the centrifugal compressor is connected with an inlet of the piston-type compressor; the compressed air generated by the centrifugal compressor which is driven to rotate by the first motor through the speed increaser enters into the piston-type compressor; and the pressure of the compressed air is increased to the needed value by the piston-type compressor driven by the second motor. The size of the air compressor set is relatively reduced, the weight of the air compressor set is lightened, the investment cost for compressor bodies, a plant and the like can be lowered, the compressor efficiency is high, the reliability is good, and the running cost and the maintenance cost are reduced.
Description
Technical field
The utility model belongs to Power Machinery Engineering compressor professional domain, more particularly, relates to a kind of centrifugal mesohigh air compressor unit that is composed in series with piston compressor.
Background technique
Air compressor is the machinery that is used for improving gas pressure and conveying gas, and it is the device that the mechanical energy of prime mover (normally motor) is converted to the gas pressure ability, is compressed-air actuated air pressure generating means.
Existing piston type compressed function reaches higher pressure ratio, has advantages such as the higher thermal efficiency, adaptability are strong; But when flow was big, the piston compressor low-pressure cylinder was too huge, caused the machine volume big and heavy, factory building foundation construction, compressor operating and maintenance cost are sharply increased, thereby piston compressor was not suitable for the occasion of big flow.
Centrifugal compressor has characteristics such as rotating speed height, volume are little, in light weight, efficient height; But when the compressor pressure ratio is higher, because volumetric flow of gas is very little, need to adopt multistage and microminiature centrifugal impeller, manufacturing expense is high, and compressor efficiency significantly descends, thereby centrifugal compressor is only applicable to the situation of low pressure, big flow.
The model utility content
The purpose of the utility model is the air compressor unit of a kind of centrifugal compressor of design and piston compressor series connection; The low pressure stage of realizing compressor is compressed by centrifugal compressor and the mesohigh section adopts the compress mode of the centrifugal and Piston Compression series connection of piston compressor, the performance that can improve compressor with reduce the production maintenance cost.
For realizing above-mentioned purpose, the air compressor unit that the centrifugal and piston type that the utility model provides is connected comprises:
Centrifugal compressor, coaxial connection one speed increaser, this speed increaser connects first motor;
Piston compressor, this piston compressor connects second motor;
Said centrifugal compressor outlet conduit connects the piston compressor import;
First motor drives the pressurized air that the centrifugal compressor rotation produces through speed increaser and gets into piston compressor, by the second driven by motor piston compressor with gas boosting to required pressure.
Said centrifugal air compressor unit of connecting with piston type, wherein, pipeline is connected with cooler and knock out drum between centrifugal compressor outlet and the piston compressor import.
Said centrifugal air compressor unit of connecting with piston type, wherein, centrifugal compressor is a plural serial stage, the outlet of previous stage centrifugal compressor connects the import of next stage centrifugal compressor; Piston compressor is a plural serial stage, and the outlet of previous stage piston compressor connects the import of next stage piston compressor; Be connected with interstage cooler between each grade centrifugal compressor and between each grade piston compressor.
Said centrifugal air compressor unit of connecting with piston type, wherein, pipeline is connected with cooler and knock out drum between outlet of afterbody centrifugal compressor and the import of first order piston compressor.
Said centrifugal air compressor unit of connecting with piston type, wherein, the interstage cooler between centrifugal compressor outlet and the piston compressor import and the pipeline of knock out drum are through flange, high pressure joint or be welded to connect.
Said centrifugal air compressor unit of connecting with piston type, wherein, interstage cooler and cooler are plate and fin type, tube still type or coil pipe type.
Said centrifugal air compressor unit of connecting with piston type, wherein, knock out drum is cylindrical shape or sphere, setting type is vertical or horizontal.
Said centrifugal air compressor unit of connecting with piston type; Wherein, The centrifugal compressor import is provided with adjustable vane, and the centrifugal compressor outlet is provided with bypassing reflux stream valve and bypass valve, realizes the adjusting to the centrifugal compressor operating conditions through regulating adjustable vane and bypassing reflux stream valve.
The utility model adopts centrifugal compressor when low pressure stage, adopt piston compressor during high pressure section, advantage that can comprehensive two kinds of compressors.Centrifugal compressor is operated in the high efficient area of low pressure, big volume flowrate; Behind centrifugal compressor, volume of air reduces, and again by the piston compressor supercharging, makes piston compressor be operated in the less relatively middle and high pressure high efficient area of volume flowrate.Can realize of the efficient operation of whole compressor group like this in the whole pressure range of basic, normal, high nip; Reduce unit volume and weight; Reduce workshop building and compressor cost of production, improve the efficient and the reliability of unit simultaneously, reduce unit operation and maintenance cost.
Description of drawings
Fig. 1 is the air compressor unit structural representation that the centrifugal and piston type of the utility model is connected.
Mark symbol description in the accompanying drawing:
1001 drive first motor of centrifugal compressor;
1002 speed increasers;
1003 centrifugal compressors;
1004 coolers;
1005 knock out drums;
1006 piston compressors;
Second motor of 1007 driven plunger formula compressors;
1008 centrifugal compressor bypass valve;
1009 centrifugal compressor bypassing reflux stream valves.
Embodiment
Centrifugal and the piston tandem air compressor of the utility model comprises: centrifugal compressor, piston compressor, motor, speed increaser, cooler, bypassing reflux stream valve, bypass valve, knock out drum.
First motor that drives centrifugal compressor is connected with speed increaser (like known gear speeder), and speed increaser links to each other with coaxial centrifugal compressor, thereby drives centrifugal compressor rotation pressurized air; Air after centrifugal compressor compression gets into cooler cooling back and gets into knock out drum, gets into piston compressor again, by the second driven by motor piston compressor with gas boosting to the required pressure of user, offer user's use at last.
Some other characteristics of the utility model are: between centrifugal compressor outlet and the piston compressor import knock out drum (like known gas holder) is arranged, the centrifugal compressor outlet is provided with bypass valve.The gas that knock out drum can be eliminated the downstream piston compressor makes centrifugal compressor outlet back pressure stable to the influence of fluctuations of centrifugal compressor outlet air pressure, guarantees that centrifugal compressor can safe and stable operation; Bypass valve then can bypass be exitted when the centrifugal compressor outlet pressure surpasses warning pressure, avoids the compressor overload.
Centrifugal compressor and piston compressor can also adopt the mode of multistage compression and carry out the inter-stage cooling according to user's request, make it as far as possible near isothermal compression, reduce the compressor power consumption.Promptly; A plurality of centrifugal compressors (piston compressor) series connection is used; Previous stage centrifugal compressor (piston compressor) outlet connects back first-stage centrifugal formula compressor (piston compressor) import, and the centrifugal compressor outlet of afterbody connects the import of first order piston compressor.Between each grade centrifugal compressor (piston compressor), be provided with interstage cooler.
The centrifugal compressor import is provided with adjustable vane, realizes the adjusting more in a large number to the centrifugal compressor operating conditions, and regulation range can reach the 60-120% of design conditions point; Through regulating centrifugal compressor outlet bypassing reflux stream valve, then can realize the trace of compressor operating operating mode is regulated, regulation range is about 5%.Through adjusting to the operating conditions of centrifugal compressor, the operating mode of the piston compressor that can conveniently realize connecting with it, thus realize regulating working conditions flexibly simply to whole compressor group.Relevant to utilize the bypassing reflux stream valve that the centrifugal compressor operating conditions is regulated be a known technology, so the present invention does not describe in detail.
Centrifugal and the piston tandem air compressor unit of the utility model; Can satisfy industrial quarters to big flow, the compressed-air actuated demand of mesohigh, compare, the characteristics that it has, and volume is less relatively, weight is light, cost of investment is lower with pot type piston formula compressor; And compressor reliability improves; Operation expense reduces, and has variable working condition characteristic preferably, can be used for industries such as chemical industry, empty branch, mine, energy storage.
Adiabatic efficiency with respect to present known medium-and-large-sized piston compressor is generally 60-75%; And the adiabatic efficiency of medium-and-large-sized centrifugal compressor is generally 80-85%; The utility model adopts has the low pressure (LP) cylinder that more high efficiency centrifugal compressor replaces the relatively low piston compressor of efficient; Then can improve the efficient of compressor bank, cut down the consumption of energy and reduce the compressor operating cost.
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
Air compressor unit of connecting for the centrifugal and piston type that adopts the utility model shown in Figure 1; Comprise motor 1001 that drives centrifugal compressor and the speed increaser 1002 that is attached thereto; Centrifugal compressor 1003 links to each other with speed increaser 1002, and speed increaser 1002 drives the coaxial with it rotation pressurized air of centrifugal compressor 1003; Pressurized air gets into knock out drum 1005 and keeps constant pressure after cooler 1004 cooling, and pressurized air gets into piston compressor 1006 again, by motor 1007 driven plunger formula compressors air further is pressurized to the required pressure of user.Centrifugal compressor 1003 outlets are provided with bypass valve 1008, and between centrifugal compressor 1003 export and imports, are connected in series a bypass reflux valve 1009.
Knock out drum 1005 between centrifugal compressor 1003 and the piston compressor 1006 can be eliminated the influence of piston compressor pressure pulsation to centrifugal compressor, makes centrifugal compressor outlet back pressure constant, guarantees security of system stable operation; When the centrifugal compressor outlet pressure surpasses warning pressure, open the bypass valve 1008 of centrifugal compressor outlet, prevent the compressor overload.
Embodiment 1
When the user's request air mass flow less than 15000Nm
3During/h; Centrifugal compressor is the centrifugal compressor of 1-3 level band interstage cooler; Air is compressed to about 3-15bar from normal pressure, and pressurized air cools in cooler then, gets into surge tank again; Stablize air pressure and reduce the gas pressure pulsation, last air gets into piston compressor and further is pressurized to the required pressure of user.
When user's request pressure was 60-100bar, piston compressor was 2 grades and has interstage cooler, will be pressurized to the required pressure of user through the centrifugal compressor air compressed by piston compressor.
When user's request pressure position 100-200bar, piston compressor is 3 grades and has interstage cooler, will be pressurized to the required pressure of user through the centrifugal compressor air compressed by piston compressor.
When user's request pressure is 200bar when above, piston compressor is more than 4 grades and has interstage cooler, will be pressurized to the required pressure of user through the centrifugal compressor air compressed by piston compressor.
Embodiment 2
When the user's request air mass flow is greater than 15000Nm
3During/h; Centrifugal compressor is the centrifugal compressor of 4 grades of band interstage coolers; Air is compressed to about 15-25bar from normal pressure; Get into surge tank again after air cools then in cooler, stablize air pressure and reduce the gas pressure pulsation, last air gets into piston compressor and further is pressurized to the required pressure of user.
When user's request pressure was 60-80bar, piston compressor was 1 grade and is with cooler, will be pressurized to the required pressure of user through the centrifugal compressor air compressed by piston compressor.
When user's request pressure was 80-230bar, piston compressor was 2 grades and has interstage cooler, will be pressurized to the required pressure of user through the centrifugal compressor air compressed by piston compressor.
When user's request pressure is 230bar when above, piston compressor is more than 3 grades and has interstage cooler, will be pressurized to the required pressure of user through the centrifugal compressor air compressed by piston compressor.
Claims (10)
1. a centrifugal air compressor unit of connecting with piston type is characterized in that, comprising:
Centrifugal compressor, coaxial connection one speed increaser, this speed increaser connects first motor;
Piston compressor, this piston compressor connects second motor;
Said centrifugal compressor outlet conduit connects the piston compressor import.
2. according to the said centrifugal air compressor unit of connecting of claim 1, it is characterized in that wherein pipeline is connected with cooler and knock out drum between centrifugal compressor outlet and the piston compressor import with piston type.
3. according to the said centrifugal air compressor unit of connecting with piston type of claim 1, it is characterized in that wherein centrifugal compressor is a plural serial stage, the outlet of previous stage centrifugal compressor connects the import of next stage centrifugal compressor; Piston compressor is a plural serial stage, and the outlet of previous stage piston compressor connects the import of next stage piston compressor; Be connected with interstage cooler between machine and each grade piston compressor between the centrifugal compression of each grade.
4. according to the said centrifugal air compressor unit of connecting of claim 3, it is characterized in that wherein interstage cooler is plate and fin type, tube still type or coil pipe type with piston type.
5. according to the said centrifugal air compressor unit of connecting of claim 3, it is characterized in that wherein pipeline is connected with cooler and knock out drum between outlet of afterbody centrifugal compressor and the import of first order piston compressor with piston type.
6. according to claim 2 or 5 said centrifugal air compressor unit of connecting, it is characterized in that wherein the cooler between centrifugal compressor outlet and the piston compressor import and the pipeline of knock out drum are flange, high pressure joint or are welded to connect with piston type.
7. according to the said centrifugal air compressor unit of connecting of claim 6, it is characterized in that wherein cooler is plate and fin type, tube still type or coil pipe type with piston type.
8. according to the said centrifugal air compressor unit of connecting with piston type of claim 6, it is characterized in that wherein knock out drum is cylindrical shape or sphere, setting type is vertical or horizontal.
9. according to claim 1,2,3 or 5 said centrifugal air compressor unit of connecting with piston type, it is characterized in that wherein the centrifugal compressor import is provided with adjustable vane, the centrifugal compressor outlet is provided with bypass valve.
10. according to the said centrifugal air compressor unit of connecting of claim 9, it is characterized in that, wherein be serially connected with the bypassing reflux stream valve between the export and import of centrifugal compressor with piston type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204899009U CN202326119U (en) | 2011-11-30 | 2011-11-30 | Air compressor set for centrifugal compressor and piston-type compressor serially connected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204899009U CN202326119U (en) | 2011-11-30 | 2011-11-30 | Air compressor set for centrifugal compressor and piston-type compressor serially connected |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202326119U true CN202326119U (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204899009U Expired - Lifetime CN202326119U (en) | 2011-11-30 | 2011-11-30 | Air compressor set for centrifugal compressor and piston-type compressor serially connected |
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| CN (1) | CN202326119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975472A (en) * | 2017-11-23 | 2018-05-01 | 宁波杭州湾新区祥源动力供应有限公司 | A kind of high-low pressure air compresses combined system |
-
2011
- 2011-11-30 CN CN2011204899009U patent/CN202326119U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975472A (en) * | 2017-11-23 | 2018-05-01 | 宁波杭州湾新区祥源动力供应有限公司 | A kind of high-low pressure air compresses combined system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CAS SHUANGLIANG ENERGY STORAGE TECHNOLOGY (BEIJING Free format text: FORMER OWNER: ENGINEERING THERMO-PHYSICS INST., CHINESE ACADEMY OF SCIENCES Effective date: 20150429 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100190 HAIDIAN, BEIJING TO: 100044 HAIDIAN, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150429 Address after: 100044 Beijing city Haidian District Road 9 No. 7 building 15 layer 1701 Patentee after: The division Shuangliang energy storage technology (Beijing) Co., Ltd. Address before: 100190 Beijing City, North Fourth Ring Road West, No. 11, No. Patentee before: Institute of Engineering Thermophysics, Chinese Academy of Sciences |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100044 Beijing city Haidian District Road 9 No. 7 building 15 layer 1701 Patentee after: Gezhouba Dam Zhongke Energy Storage Technology Co., Ltd. Address before: 100044 Beijing city Haidian District Road 9 No. 7 building 15 layer 1701 Patentee before: The division Shuangliang energy storage technology (Beijing) Co., Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Air compressor set with centrifugal air compressor and piston air compressor connected with each other in series Effective date of registration: 20181220 Granted publication date: 20120711 Pledgee: China Gezhouba Group Equipment Industry Co., Ltd. Pledgor: Gezhouba Dam Zhongke Energy Storage Technology Co., Ltd. Registration number: 2018990001237 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |