CN104950933A - Device for stabilizing steam pressure of system - Google Patents
Device for stabilizing steam pressure of system Download PDFInfo
- Publication number
- CN104950933A CN104950933A CN201510285447.2A CN201510285447A CN104950933A CN 104950933 A CN104950933 A CN 104950933A CN 201510285447 A CN201510285447 A CN 201510285447A CN 104950933 A CN104950933 A CN 104950933A
- Authority
- CN
- China
- Prior art keywords
- compressor
- steam
- pressure
- plc
- steam pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
A device for stabilizing steam pressure of a system comprises a compressor and a PLC (programmable logic controller). The device is characterized in that a first pressure sensor is arranged at a position where an inlet of the compressor and a steam supply end of a steam pipeline are connected, a second pressure sensor is arranged at a position where an outlet of the compressor is connected with a steam consuming end of the steam pipeline, the compressor is connected with an output end of a frequency changer which controls rotating speed of the compressor, a signal input end of the frequency changer is connected with an output end of the PLC, and a signal input end the output end of the PLC are connected with the first pressure sensor and the second pressure sensor. The device is safe and reasonable in structure and stable in steam pressure, and working efficiency is improved. Compared with the prior art, the device has the advantages that stability in steam pressure of the system is realized, so that negative influence, on production, caused by steam pressure fluctuation is avoided; a pressurizing method is utilized to stabilize steam pressure, and work that the compressor makes to steam can be converted into internal energy of steam to be recycled.
Description
Technical field
The invention belongs to pressure control equipment technical field, particularly relate to a kind of stabilising arrangement of System steam pressure.
Background technology
At present, for a lot of middle-size and small-size chemical enterprise, along with the lifting of production capacity, steam often occurs that steam supply is inadequate, and vapor pressure fluctuation is comparatively large and affect normally carrying out of production.Particularly existing batch production has again quantity-produced chemical enterprise, continuous seepage workshop section needs stable vapor pressure, and batch production workshop section one opens, then System steam pressure will immediately decline to a great extent, batch production workshop section one stops, then System steam pressure has and suddenly rises, very unfavorable to continuous seepage workshop section like this.This not only can cause continuous seepage workshop section often to need to regulate, and vapor pressure rises suddenly and sharply suddenly and also there is potential safety hazard.
For the fluctuation of vapor pressure, mainly increase boiler at present and increase steam supply amount, then carry out stable vapor pressure by controlling opening of valve.Increase boiler and can bring cost of investment and running cost, secondly, the benefit of boiler also can decrease, but can not give full play of the effect of boiler; And the too little meeting of valve opening causes vapor pressure in boiler excessive, reduces heat-transfer effect and also brings potential safety hazard.
Summary of the invention
The invention provides a kind of stabilising arrangement of System steam pressure, in order to solve the technical matters such as vapor pressure instability, the supply of steam interval.
In order to solve the problem, the technical solution adopted in the present invention is: a kind of stabilising arrangement of System steam pressure, comprise compressor, PLC, it is characterized in that the import of described compressor and the steam supply end junction of jet chimney are provided with the first pressure transducer, the outlet of compressor and the consumption vapour end junction of jet chimney are provided with the second pressure transducer, described compressor is connected with the output terminal of the frequency converter controlling compressor rotary speed, the signal input part of frequency converter is connected with the output terminal of PLC, the signal input part of PLC and output terminal are respectively with first, second pressure transducer connects.
As preferably, described compressor is high-speed centrifugal compressor, and compressor enters, place's mouth is equipped with retaining valve.
The present invention has that structural safety is reasonable, vapor pressure is stablized, increases work efficiency.Compared to the prior art, the present invention realizes the stable of System steam pressure, avoiding vapor pressure fluctuation to producing the negative effect brought, using the method for supercharging to carry out stable vapor pressure, compressor changes energy in steam into the trade union that steam does and is reused; The low pressure of compressor inlet is more conducive to steam and comes from boiler conveying, can reduce vapor pressure in boiler simultaneously, more be conducive to the vaporization of water in boiler, to produce more steam, finally play the effect improving boiler efficiency.
Accompanying drawing explanation
Fig. 1 is device schematic diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in further detail.
Shown in composition graphs 1, the stabilising arrangement of this System steam pressure is by compressor 1, frequency converter 4, PLC 5 and first, second pressure transducer 2, 3 compositions, the import of its compressor 1 and steam supply end 60 junction of jet chimney are provided with the first pressure transducer 2, the outlet of compressor 1 and consumption vapour end 61 junction of jet chimney are provided with the second pressure transducer 3, compressor 1 is connected with the output terminal of the frequency converter 4 controlling compressor rotary speed, the signal input part of frequency converter 4 is connected with the output terminal of PLC 5, compressor 1 enters, place's mouth is equipped with retaining valve 8, prevent steam flow from flowing backwards, following steps setting is carried out to jet chimney:
Step one, on jet chimney the stabilising arrangement of installation system vapor pressure, first, second pressure transducer 2,3 detects the vapor pressure in jet chimney, ensures the lasting supply of steam simultaneously;
Step 2, the vapor pressure determining needed for normal production, vapor pressure needed for it is that each consumption vapour equipment runs well the minimum vapor pressure needed;
Step 3, using compressor 1 top hole pressure as controlled variable, compressor 1 inlet pressure is as feed forward variable, compressor 1 rotating speed is as performance variable, compressor 1 exit pressure levels is set to 0 ~ 0.02Mpa higher than required vapour pressure force value, the mxm. of compressor 1 rotational speed operation scope is the maximum speed of compressor apparatus, the signal input part of PLC 5 and output terminal are respectively with first, second pressure transducer 2, 3 connect, first, second pressure transducer 2, the vapor pressure of detection is passed to PLC 5 by 3, PLC 5 can regulate compressor 1 compressed capability at compressor 1 top hole pressure below or above increasing or reduce frequency converter 4 frequency during required pressure,
Step 4, setting compressor 1 rotational speed operation scope, compressor 1 rotational speed operation range set is 100 ~ 40000r/min, and compressor 1 is high-speed centrifugal compressor, and vapor pressure is promoted 0 ~ 0.3Mpa.
In whole process, System steam pressure surge is in 0.05Mpa, and pressure only needs 2 ~ 12 minutes used times from dropping to recovery, and continuous workshop section is influenced less.
Taking when vapor pressure meets production work, compressor quits work, and without the need to carrying out current limliting or supercharging to steam flow, steam flow directly passes through compressor.
Finally, it should be pointed out that above embodiment is only the more representational example of the present invention.Obviously, the invention is not restricted to above-mentioned embodiment, many distortion can also be had.Every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all should think and belong to protection scope of the present invention.
Claims (2)
1. the stabilising arrangement of a System steam pressure, comprise compressor, PLC, it is characterized in that the import of described compressor and the steam supply end junction of jet chimney are provided with the first pressure transducer, the outlet of compressor and the consumption vapour end junction of jet chimney are provided with the second pressure transducer, described compressor is connected with the output terminal of the frequency converter controlling compressor rotary speed, the signal input part of frequency converter is connected with the output terminal of PLC, and the signal input part of PLC is connected with first, second pressure transducer respectively with output terminal.
2. the stabilising arrangement of a kind of System steam pressure according to claim 1, it is characterized in that described compressor is high-speed centrifugal compressor, compressor enter, place mouth be equipped with retaining valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510285447.2A CN104950933B (en) | 2015-05-29 | 2015-05-29 | Stabilizer for system steam pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510285447.2A CN104950933B (en) | 2015-05-29 | 2015-05-29 | Stabilizer for system steam pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104950933A true CN104950933A (en) | 2015-09-30 |
| CN104950933B CN104950933B (en) | 2020-07-14 |
Family
ID=54165650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510285447.2A Active CN104950933B (en) | 2015-05-29 | 2015-05-29 | Stabilizer for system steam pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104950933B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305929A (en) * | 2015-11-18 | 2016-02-03 | 苏州信利昌电子材料有限公司 | Variable-frequency speed regulation device |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0565808A (en) * | 1991-09-04 | 1993-03-19 | Fuji Electric Co Ltd | Steam turbine plant supplying heat |
| US20040221591A1 (en) * | 2003-05-05 | 2004-11-11 | Alexander Lifson | Vapor compression system performance enhancement and discharge temperature reduction in the unloaded mode of operation |
| CN1910361A (en) * | 2004-01-22 | 2007-02-07 | 卡尔克内工程公司 | A method and a system for control of a device for compression |
| CN1926390A (en) * | 2003-12-19 | 2007-03-07 | 开利公司 | Vapor compression startup method and system |
| CN101280695A (en) * | 2007-04-05 | 2008-10-08 | 株式会社神户制钢所 | Steam recovery apparatus |
| CN202199130U (en) * | 2011-08-12 | 2012-04-25 | 启东神农机械有限公司 | Mechanical recompression evaporator |
| CN102434991A (en) * | 2010-09-23 | 2012-05-02 | 热之王公司 | Control of transcritical vapor compression system |
| CN202274285U (en) * | 2011-07-06 | 2012-06-13 | 中国寰球工程公司 | Pressure control system of liquefied natural gas storage tank |
| US20120205231A1 (en) * | 2011-02-15 | 2012-08-16 | Batty J Clair | Controlled-gradient, accelerated-vapor-recompression apparatus and method |
| CN102781536A (en) * | 2010-02-12 | 2012-11-14 | 瑞典诺迪克有限公司 | Compressed air supply for the operation of moving bed filters |
| CN102840136A (en) * | 2011-06-22 | 2012-12-26 | 株式会社神户制钢所 | Steam drive type compression device |
| CN202822807U (en) * | 2012-07-31 | 2013-03-27 | 广东正力精密机械有限公司 | Mechanical steam re-compressing system |
| CN203585805U (en) * | 2013-08-22 | 2014-05-07 | 天津华迈燃气装备股份有限公司 | Natural gas flashing vapour recovery device of liquefied natural gas (LNG) liquid adding station |
| US20140144355A1 (en) * | 2010-12-10 | 2014-05-29 | Power Systems Synectics Limited | Oxy-fuel plant with flue gas compression and method |
| CN203835683U (en) * | 2014-03-25 | 2014-09-17 | 重庆耐德能源装备集成有限公司 | Flash steam variable frequency compressor system and natural gas liquefaction system applied same |
| CN203861927U (en) * | 2014-02-13 | 2014-10-08 | 滨州市力之源生物科技有限公司 | Mechanical recompression evaporator |
| CA2698049C (en) * | 2007-08-27 | 2014-10-28 | Larry D. Sanderson | System and method for purifying an aqueous stream |
| CN204731600U (en) * | 2015-05-29 | 2015-10-28 | 湖北绿色家园精细化工股份有限公司 | A kind of stabilising arrangement of System steam pressure |
-
2015
- 2015-05-29 CN CN201510285447.2A patent/CN104950933B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0565808A (en) * | 1991-09-04 | 1993-03-19 | Fuji Electric Co Ltd | Steam turbine plant supplying heat |
| US20040221591A1 (en) * | 2003-05-05 | 2004-11-11 | Alexander Lifson | Vapor compression system performance enhancement and discharge temperature reduction in the unloaded mode of operation |
| CN1926390A (en) * | 2003-12-19 | 2007-03-07 | 开利公司 | Vapor compression startup method and system |
| CN1910361A (en) * | 2004-01-22 | 2007-02-07 | 卡尔克内工程公司 | A method and a system for control of a device for compression |
| CN101280695A (en) * | 2007-04-05 | 2008-10-08 | 株式会社神户制钢所 | Steam recovery apparatus |
| CA2698049C (en) * | 2007-08-27 | 2014-10-28 | Larry D. Sanderson | System and method for purifying an aqueous stream |
| CN102781536A (en) * | 2010-02-12 | 2012-11-14 | 瑞典诺迪克有限公司 | Compressed air supply for the operation of moving bed filters |
| CN102434991A (en) * | 2010-09-23 | 2012-05-02 | 热之王公司 | Control of transcritical vapor compression system |
| US20140144355A1 (en) * | 2010-12-10 | 2014-05-29 | Power Systems Synectics Limited | Oxy-fuel plant with flue gas compression and method |
| US20120205231A1 (en) * | 2011-02-15 | 2012-08-16 | Batty J Clair | Controlled-gradient, accelerated-vapor-recompression apparatus and method |
| CN102840136A (en) * | 2011-06-22 | 2012-12-26 | 株式会社神户制钢所 | Steam drive type compression device |
| CN202274285U (en) * | 2011-07-06 | 2012-06-13 | 中国寰球工程公司 | Pressure control system of liquefied natural gas storage tank |
| CN202199130U (en) * | 2011-08-12 | 2012-04-25 | 启东神农机械有限公司 | Mechanical recompression evaporator |
| CN202822807U (en) * | 2012-07-31 | 2013-03-27 | 广东正力精密机械有限公司 | Mechanical steam re-compressing system |
| CN203585805U (en) * | 2013-08-22 | 2014-05-07 | 天津华迈燃气装备股份有限公司 | Natural gas flashing vapour recovery device of liquefied natural gas (LNG) liquid adding station |
| CN203861927U (en) * | 2014-02-13 | 2014-10-08 | 滨州市力之源生物科技有限公司 | Mechanical recompression evaporator |
| CN203835683U (en) * | 2014-03-25 | 2014-09-17 | 重庆耐德能源装备集成有限公司 | Flash steam variable frequency compressor system and natural gas liquefaction system applied same |
| CN204731600U (en) * | 2015-05-29 | 2015-10-28 | 湖北绿色家园精细化工股份有限公司 | A kind of stabilising arrangement of System steam pressure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305929A (en) * | 2015-11-18 | 2016-02-03 | 苏州信利昌电子材料有限公司 | Variable-frequency speed regulation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104950933B (en) | 2020-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105543443B (en) | A method of being used for coal gas of converter pressuring machine antisurge control system | |
| CN102297149A (en) | Device and method for widening stable operation area of centrifugal compressor, and centrifugal compressor | |
| CN107956519B (en) | Water spraying system for rear cylinder of low-pressure cylinder of steam turbine and adjusting method | |
| CN210236436U (en) | Dynamic energy-saving control system for motor frequency of wind power feeding system | |
| CN204731600U (en) | A kind of stabilising arrangement of System steam pressure | |
| CN202579361U (en) | Automatic control type steam jet heat pump | |
| CN104950933A (en) | Device for stabilizing steam pressure of system | |
| CN202280642U (en) | Device for expanding stable running area of centrifugal compressor and centrifugal compressor | |
| CN204663593U (en) | The filling control system of Power Plant Feedwater mercury vapour turbine | |
| CN207813924U (en) | Double-drive permanent-magnet frequency conversion two stages of compression screw air compressor control device | |
| CN107560451B (en) | Energy-saving vacuum device | |
| CN204805180U (en) | Steam -jet ejector heat pump with adjustable | |
| CN103644090B (en) | A kind of liquid vapour jet-type takes out negative pressure system and controlling method thereof | |
| CN206268119U (en) | A kind of compressor anti-surge installation of MVR vaporising devices | |
| CN106288602A (en) | A kind of industrial cooling circulating water system and control method thereof | |
| CN211503824U (en) | Water turbine operation condition adjusting device for driving cooling tower fan | |
| CN104610058A (en) | Recycling technology for byproduct steam of dimethyl oxalate synthetic process | |
| CN211371929U (en) | Input steam pressure adjusting device of steam vacuum pump | |
| CN203162545U (en) | Pre-cooling type cooling and pressure reduction device | |
| CN103320563B (en) | A kind of COREX shaft furnace stock gas treatment system and treatment process thereof | |
| CN112796983A (en) | Diesel engine test run cooling system and multiple hot water pump linkage control device thereof | |
| CN109798260A (en) | A kind of gas-blowing engine device | |
| CN104405457A (en) | Energy cascade utilization system of back pressure turbine heating | |
| CN203582885U (en) | Flow stabilizing system of blast furnace oxygen enriching process | |
| CN203615819U (en) | Work protection control system for diphenylamine slice cooling and refrigerating unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 60 No. 433000 Hubei province Xiantao Xiantao office Sha Tsui Road Applicant after: Hubei green home materials technology Limited by Share Ltd Address before: 60 No. 433000 Hubei province Xiantao Xiantao office Sha Tsui Road Applicant before: HUBEI GREENHOME FINE CHEMICAL CO., LTD. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |