CN202614421U - Device used for on-line measurement of low pressure cylinder exhaust enthalpy - Google Patents
Device used for on-line measurement of low pressure cylinder exhaust enthalpy Download PDFInfo
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- CN202614421U CN202614421U CN 201220248165 CN201220248165U CN202614421U CN 202614421 U CN202614421 U CN 202614421U CN 201220248165 CN201220248165 CN 201220248165 CN 201220248165 U CN201220248165 U CN 201220248165U CN 202614421 U CN202614421 U CN 202614421U
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Abstract
The utility model discloses a device used for an on-line measurement of low pressure cylinder exhaust enthalpy comprising a DCS system, a server used for real-time data acquisition, a forward-direction isolation device, a server provided with a PI real-time database system, a server used for providing a real-time data calculation service, a server provided with a sp1 server 2003 database software, and a display. The DCS system, the server used for the real-time data acquisition, the forward-direction isolation device, the server provided with the PI real-time database system, the server used for providing the real-time data calculation service, and the display are connected together sequentially, and the server provided with the sp1 server 2003 database software is connected with the server used for providing the real-time data calculation service. The device can be used for the accurate on-line measurement of the low pressure cylinder exhaust enthalpy.
Description
Technical field
The utility model relates to a kind of measurement mechanism, relates in particular to a kind of exhaust enthalpy of low pressure cylinder of steam turbine on-line measurement device.
Background technology
Steam turbine is being carried out in the process of economic analysis, must confirm the thermodynamic state of steam turbine last stage, under normal conditions; Steam turbine all belongs to wet-steam region from the last one-level turbine discharge that draws gas, and at wet-steam region, pressure and temperature no longer is an independent variable; The mass dryness fraction parameter of the auxiliary wet steam of needs could be confirmed the state of wet steam; And no matter present online low pressure dryness measurement device is from measuring accuracy, measuring speed, still on cost investment, also has a lot of problems, for the thermodynamic state of online acquisition steam turbine afterbody steam; Must carry out variable working condition to steam turbine calculates; The design parameter that Under Variable Conditions of Steam Turbine is calculated equipment needed thereby, geometric parameter and necessity is a lot, and needs loop iteration to calculate, and loop iteration calculates owing to multiple reason can not restrain; Even can restrain, its computing velocity does not reach the rate request of unit on-line monitoring far away yet.
At present, the device of on-line measurement exhaust enthalpy of low pressure cylinder of steam turbine (low row enthalpy) still be a blank, develop a kind of can the low device of arranging enthalpy of on-line measurement, become the problem that the online economic analysis of steam turbine must solve.
Summary of the invention
The utility model technical matters to be solved is to the prior art deficiency, a kind of device of on-line measurement low pressure (LP) cylinder exhaust enthalpy to be provided, exactly the on-line measurement exhaust enthalpy of low pressure cylinder of steam turbine.
For solving the problems of the technologies described above; The technical scheme that the utility model adopted is: a kind of device of on-line measurement low pressure (LP) cylinder exhaust enthalpy; Comprise the DCS system, be used for server, the forward spacer assembly of real-time data acquisition, the server that the PI real-time dataBase system is housed, the server that the real time data calculation services is provided, the server that sp1 server2003 database software is housed, display; DCS system, the server that is used for real-time data acquisition, forward spacer assembly, be equipped with the PI real-time dataBase system server, provide the server of real time data calculation services, display to connect successively, the server that sp1 server2003 database software is housed is connected with the server that the real time data calculation services is provided.
The beneficial effect of the utility model is: data acquisition, calculating, demonstration are all accomplished automatically, need not manually-operated; Versatility is wide, applicability is strong, simple to operate, computation period weak point consuming time, computational accuracy are high; Set up new mathematics computing model, than existing computation model science more; Can call the historic state of checking real time data and computational data, make things convenient for the operations staff that data are analysed and compared.
Description of drawings
Fig. 1 is the utility model one example structure block diagram;
Wherein:
The 1:DCS system; 2: the server that is used for real-time data acquisition; 3: the forward spacer assembly; 4: the server that the PI real-time dataBase system is housed; 5: the server that the real time data calculation services is provided; 6: display; 7: the server that sp1 server2003 database software is housed.
Embodiment
As shown in Figure 1; The utility model one embodiment comprises DCS system 1, is used for the server 2 (acquisition server) of real-time data acquisition, forward spacer assembly 3, be equipped with the PI real-time dataBase system server 4 (real time data server), provide the real time data calculation services server 5 (computation model server), server 7 (relational database server), the display 6 of sp1 server2003 database software are housed; DCS system 1, the server 2 that is used for real-time data acquisition, forward spacer assembly 3, the server 4 that the PI real-time dataBase system is housed, the server 5 that the real time data calculation services is provided, display 6 connect successively, and the server 7 that sp1 server2003 database software is housed is connected with the server that the real time data calculation services is provided 5.
The DCS system of DCS system representation thermal power plant.
The server 2 that is used for real-time data acquisition adopts and is prone to the scientific and technological data acquisition software that traces back; Operate on 32 windows2000/windows2003 network platform; Can articulate LAN or wide area network, from the DCS system, gather the required data that participate in the calculating, its configuration is following basically:
(1) more than the CPU:P4 2.4G; (2) more than the RAM:521MB; (3) hard disk: more than the 50GB; (4) CRT:XVGA15 " (differentiate >=1024*768) more than; (5) CD-ROM drive: four times more than the speed; (6) software: be prone to the scientific and technological data acquisition software that traces back; (7) operating system: windows2000/windows2003; (8) network: Ethemet network interface card, MODEM etc.; (9) other: other multimedia accessories such as mouse, keyboard.
Forward spacer assembly 3 adopts the DDC-GAP-C5000 intelligence number Cai Tong-forward spacer assembly of Datang Science and Technology Ltd. research and development earlier; This device can carry out physical isolation with Power Plant DCS System (internal network) and external network, thereby guarantees the Power Plant DCS System safety of data;
The server 4 that the PI real-time dataBase system is housed adopts the PI real-time data base of U.S. OSI Software company; Operate on 32 windows2000/windows2003 network platforms; Can articulate LAN or wide area network, storage real-time field data of DCS and historical record, its configuration is following basically:
(1) more than the CPU:P4 2.4G; (2) more than the RAM:521MB; (3) hard disk: more than the 800GB; (4) CRT:XVGA15 " (differentiate >=1024*768) more than; (5) CD-ROM drive: four times more than the speed; (6) software: the PI real-time data base of OSI Software company; (7) operating system: windows2000/windows2003; (8) network: Ethemet network interface card, MODEM etc.; (9) other: other multimedia accessories such as mouse, keyboard.
Provide the server 5 of real time data calculation services to operate on 32 windows2000/windows2003 network platforms; Can hang LAN or wide area network is connected with real-time data base server, client computer; Utilization Thermal Power Station principle is carried out calculation of parameter, and its basic configuration is following:
(1) more than the CPU:P4 2.4G; (2) more than the RAM:521MB; (3) hard disk: more than the 80GB; (4) CRT:XVGA15 " (differentiate >=1024*768) more than; (5) CD-ROM drive: four times more than the speed; (6) software: combine turbine low pressure cylinder internal efficiency ratio, power equation and Fu Liugeer formula etc. to calculate the online software for calculation of principle; (7) operating system: windows2000/windows2003; (8) network: Ethemet network interface card, MODEM etc.; (9) other: other multimedia accessories such as mouse, keyboard.
The server 7 that sp1 server2003 database software is housed operates on 32 windows2000/windows2003 network platforms; Can hang LAN or wide area network; The low row of steam turbine enthalpy data and its historical record that storage calculates through computation model, its basic configuration is following:
(1) more than the CPU:P4 2.4G; (2) more than the RAM:521MB; (3) hard disk: more than the 80GB; (4) CRT:XVGA15 " (differentiate >=1024*768) more than; (5) CD-ROM drive: four times more than the speed; (6) software: the sp1 server2003 database software of microsoft software company; (7) operating system: windows2000/windows2003; (8) network: Ethemet network interface card, MODEM etc.; (9) other: other multimedia accessories such as mouse, keyboard.
This device is showed from the real-time data acquisition to result of calculation and is mainly contained following step:
The first step: real-time data acquisition; The server that is used for real-time data acquisition mainly is connected with Power Plant DCS System through the form of interface; Directly need participate in the real time data the calculating of low row's enthalpy, such as main steam flow, main steam temperature, main steam pressure, low pressure (LP) cylinder admission flow, low pressure (LP) cylinder throttle (steam) temperature, low pressure (LP) cylinder initial steam pressure or the like from the Power Plant DCS System collection;
Second step: the real time data pre-service, in the server that the real time data calculation services is provided, the real time data that is kept in the real-time data base is screened, pick out the real time data that satisfies online calculation requirement;
The 3rd step: real time data is calculated, and according to low row's enthalpy calculation mathematic model of setting up, will be incorporated into the computation model from DCS system acquisition, the pretreated real time data of process data, calculates the low row of steam turbine enthalpy in real time;
The 4th step: result of calculation is showed, is showed the low row's enthalpy that calculates the user to check with directly perceived, movement form;
The 5th step: data are preserved backup, mainly comprise real time data is preserved and the operation result data are preserved storage and backup, and the user can inquire historical data at any time, for the user's data analysis facilitates.
This device is to the shortcoming of the existing computation model of the low row of turbine low pressure cylinder enthalpy; In conjunction with turbine low pressure cylinder internal efficiency ratio, power equation and Fu Liugeer formula; Rebulid mathematical model: calculate steam turbine height, the actual internal power of intermediate pressure cylinder earlier, with its substitution steam turbine power balance equation, obtain the actual internal efficiency of low pressure (LP) cylinder then; According to the anti-low pressure (LP) cylinder exhaust enthalpy that pushes away of low pressure (LP) cylinder internal power equation, its calculation procedure all is installed in the server that the real time data calculation services is provided again.
Claims (3)
1. the device of an on-line measurement low pressure (LP) cylinder exhaust enthalpy; It is characterized in that; Comprise the DCS system, be used for server, the forward spacer assembly of real-time data acquisition, the server that the PI real-time dataBase system is housed, the server that the real time data calculation services is provided, the server that sp1 server2003 database software is housed, display; DCS system, the server that is used for real-time data acquisition, forward spacer assembly, be equipped with the PI real-time dataBase system server, provide the server of real time data calculation services, display to connect successively, the server that sp1 server2003 database software is housed is connected with the server that the real time data calculation services is provided.
2. the device of on-line measurement low pressure (LP) cylinder exhaust enthalpy according to claim 1 is characterized in that, said forward spacer assembly is that DDC-GAP-C5000 intelligence number is adopted logical forward spacer assembly.
3. the device of on-line measurement low pressure (LP) cylinder exhaust enthalpy according to claim 1 is characterized in that, said display is 17 cun LCDs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220248165 CN202614421U (en) | 2012-05-30 | 2012-05-30 | Device used for on-line measurement of low pressure cylinder exhaust enthalpy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220248165 CN202614421U (en) | 2012-05-30 | 2012-05-30 | Device used for on-line measurement of low pressure cylinder exhaust enthalpy |
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| Publication Number | Publication Date |
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| CN202614421U true CN202614421U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220248165 Expired - Lifetime CN202614421U (en) | 2012-05-30 | 2012-05-30 | Device used for on-line measurement of low pressure cylinder exhaust enthalpy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895977A (en) * | 2017-03-13 | 2017-06-27 | 华北电力大学 | A kind of low pressure (LP) cylinder final stage exhaust enthalpy measurement apparatus and computational methods |
-
2012
- 2012-05-30 CN CN 201220248165 patent/CN202614421U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895977A (en) * | 2017-03-13 | 2017-06-27 | 华北电力大学 | A kind of low pressure (LP) cylinder final stage exhaust enthalpy measurement apparatus and computational methods |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |