CN201408370Y - Liquid-level monitoring device for boiler drum - Google Patents
Liquid-level monitoring device for boiler drum Download PDFInfo
- Publication number
- CN201408370Y CN201408370Y CN2009203030253U CN200920303025U CN201408370Y CN 201408370 Y CN201408370 Y CN 201408370Y CN 2009203030253 U CN2009203030253 U CN 2009203030253U CN 200920303025 U CN200920303025 U CN 200920303025U CN 201408370 Y CN201408370 Y CN 201408370Y
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- electric contact
- water level
- level
- dcs
- transmission device
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- 239000007788 liquid Substances 0.000 title claims abstract description 14
- 238000012806 monitoring device Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000012544 monitoring process Methods 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
The utility model relates to a water-level detection technology for a boiler drum. The utility model solves the problem of low accuracy of water-level monitoring and controlling for the prior DCS steam drum and provides a liquid-level monitoring device for a boiler drum. The utility model adopts the technical scheme that the liquid-level monitoring device for a boiler drum comprises a DCS monitoring module and further comprises an electric contact water level meter and an electric contact water level local display instrument with a remote transmission device, wherein the electric contact waterlevel meter is connected with the electric contact water level local display instrument with the remote transmission device, and the electric contact water level local display instrument with the remote transmission device is connected with the DCS monitoring module. The utility model has the benefits that the liquid-level monitoring device enables the water-level monitoring for the boiler drum to be more reliable and is suitable for a DCS monitoring system for water level of the boiler drum.
Description
Technical field
The utility model relates to the boiler drum level detection technique, particularly the DCS of steam water-level (DistributedControl System, Distributed Control System (DCS)) supervisory system.
Background technology
The sensor that is used for water level detecting at present comprises differential pressure water level gauge, electric contact point fluviograph, two-colour fluviograph, glass-tube water level gauge, and introduce the DCS supervisory system just have only differential pressure water level gauge.Differential pressure water level gauge utilization equalizing reservoir and differential pressure transmitter will measured liquid level signal convert 4 to 20mA analog signals to and deliver to the DCS supervisory system and control and monitoring parameter as DCS, but, differential pressure water level gauge is because the characteristics decision of himself has following shortcoming: 1. working condition is bigger to its influence, has shortcomings such as zero point drift, linear deflection under different working conditions; 2. cause water level normally to show at the boiler operatiopn initial stage owing to the equalizing reservoir structure; 3. be subjected to climate effect bigger, under the situation of variation of ambient temperature, there are shortcomings such as zero point drift and linear deflection equally, therefore cause the supervision and the precise control reduction of existing DCS steam water-level, and the contact point signal of existing electric contact point fluviograph can not directly import the DCS supervisory system into, and required number of cables is bigger.The DCS watch-dog of existing boiler drum level generally comprises level sensor and DCS monitoring module, wherein, level sensor is used for sensed water level to be changed, and signal (being generally the analog current signal of 4～20mA) the input DCS monitoring module that is converted into DCS monitoring module compatibility is handled.
The utility model content
The purpose of this utility model is supervision and the not high shortcoming of precise control that overcomes existing DCS steam water-level, and a kind of boiler-steam dome liquid level monitoring device is provided.
The utility model solves its technical matters, the technical scheme that adopts is, a kind of boiler-steam dome liquid level monitoring device, comprise the DCS monitoring module, the electric contact water level Displaying Meter on the spot that also comprises electric contact point fluviograph, band remote transmission device, the electric contact water level of described electric contact point fluviograph and band remote transmission device Displaying Meter on the spot is connected, and the electric contact water level of being with remote transmission device Displaying Meter on the spot is connected with the DCS monitoring module.
Further, the band remote transmission device the electric contact water level on the spot the Displaying Meter output signal be the simulating signal of 4～20mA.
Concrete, also comprising differential pressure type water level detecting module, described differential pressure type water level detecting module is connected with the DCS monitoring module.
The beneficial effects of the utility model are, electric contact point fluviograph is introduced the DCS supervisory system with its reference variable as supervision of boiler drum level and control, the characteristics of utilization electric contact point fluviograph self combine with differential pressure type water level detecting module, same energy effective monitoring steam water-level when working condition changes, the boiler operatiopn initial stage also can be real-time the monitoring steam water-level, and be not subjected to the influence of environment temperature water level detecting, make the steam water-level monitoring more reliable.
Description of drawings
Fig. 1 is the system chart of embodiment.
Embodiment
Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.
The utility model with electric contact point fluviograph with the band remote transmission device the electric contact water level on the spot Displaying Meter be connected, the electric contact water level of band remote transmission device Displaying Meter and DCS monitoring module on the spot connects to form a kind of boiler-steam dome liquid level monitoring device, and it is more reliable to utilize electric contact point fluviograph that steam water-level is monitored.
Embodiment
This example with electric contact point fluviograph by the band remote transmission device the electric contact water level on the spot Displaying Meter be connected with the DCS monitoring module, simultaneously, differential pressure type water level detecting module is connected with the DCS monitoring module, its system chart such as Fig. 1.
At first differential pressure type water level detecting module is connected with the DCS monitoring module, Displaying Meter and DCS monitoring module connect to form a kind of boiler-steam dome liquid level monitoring device to the electric contact water level of electric contact point fluviograph by the band remote transmission device on the spot.Because the contact point signal of electric contact point fluviograph can not directly import the DCS monitoring module into, and needed number of cables is bigger, therefore the electric contact water level of giving the band remote transmission device by cable transmission with the electric contact signal of electric contact point fluviograph output Displaying Meter on the spot, electric contact water level by band remote transmission device Displaying Meter on the spot becomes the electric contact conversion of signals simulating signal of 4～20mA, and insert the DCS monitoring module by a spot of cable and be used for of control and the supervision of this boiler-steam dome liquid level monitoring device steam water-level, and the electric contact water level of band remote transmission device on the spot Displaying Meter on boiler next door, then, also can see on the boiler next door not only in the other value that can see steam water-level of DCS monitoring module.
The electric contact water level of the band remote transmission device effect of Displaying Meter on the spot is exactly the value that shows steam water-level nearby, and becomes the analog signal transmission of 4～20mA to give the DCS monitoring module electric contact conversion of signals of electric contact point fluviograph output.
Because the each several part circuit in the technical solutions of the utility model belongs to prior art, no longer describe in detail herein.Those of ordinary skill in the art according to foregoing description, can adopt various circuit to realize the technical solution of the utility model, and it all belongs to protection domain of the present utility model.
Claims (3)
1. boiler-steam dome liquid level monitoring device, comprise the DCS monitoring module, it is characterized in that, the electric contact water level Displaying Meter on the spot that also comprises electric contact point fluviograph, band remote transmission device, the electric contact water level of described electric contact point fluviograph and band remote transmission device Displaying Meter on the spot is connected, and the electric contact water level of being with remote transmission device Displaying Meter on the spot is connected with the DCS monitoring module.
2. according to the described a kind of boiler-steam dome liquid level monitoring device of claim 1, it is characterized in that the electric contact water level of described band remote transmission device Displaying Meter output signal on the spot is the simulating signal of 4～20mA.
3. according to claim 1 or 2 described a kind of boiler-steam dome liquid level monitoring devices, it is characterized in that also comprise differential pressure type water level detecting module, described differential pressure type water level detecting module is connected with the DCS monitoring module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203030253U CN201408370Y (en) | 2009-05-11 | 2009-05-11 | Liquid-level monitoring device for boiler drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203030253U CN201408370Y (en) | 2009-05-11 | 2009-05-11 | Liquid-level monitoring device for boiler drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201408370Y true CN201408370Y (en) | 2010-02-17 |
Family
ID=41679309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203030253U Expired - Fee Related CN201408370Y (en) | 2009-05-11 | 2009-05-11 | Liquid-level monitoring device for boiler drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201408370Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048288A (en) * | 2014-06-19 | 2014-09-17 | 牛永杰 | Boiler with liquid level monitoring function |
| CN104964268A (en) * | 2015-07-23 | 2015-10-07 | 济南裕兴化工有限责任公司 | Automatic water feeding method, using electric contact water level indicator signal, of boiler DSC system |
| CN105423278A (en) * | 2015-12-25 | 2016-03-23 | 华北电力科学研究院有限责任公司 | Whole-process control system for boiler water level |
-
2009
- 2009-05-11 CN CN2009203030253U patent/CN201408370Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048288A (en) * | 2014-06-19 | 2014-09-17 | 牛永杰 | Boiler with liquid level monitoring function |
| CN104964268A (en) * | 2015-07-23 | 2015-10-07 | 济南裕兴化工有限责任公司 | Automatic water feeding method, using electric contact water level indicator signal, of boiler DSC system |
| CN104964268B (en) * | 2015-07-23 | 2017-03-15 | 济南裕兴化工有限责任公司 | The method that Boiler DCS System realizes automatic loading water using electric contact point fluviograph signal |
| CN105423278A (en) * | 2015-12-25 | 2016-03-23 | 华北电力科学研究院有限责任公司 | Whole-process control system for boiler water level |
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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: CHENGDU STONE NEW ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: CHENGDU STONE TECHNOLOGY INVESTMENT CO., LTD. Effective date: 20101109 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 610041 3/F, NATIONAL 863 SOFTWARE INCUBATOR(SICHUAN) BASE, NO.3, CHENGKE WEST ROAD, CHENGDU CITY, SICHUAN PROVINCE TO: 610041 3/F, NATIONAL 863 SOFTWARE INCUBATOR SICHUAN BASE, NO.3, CHENGKE WEST ROAD, SECTION 4 OF RENMIN SOUTH ROAD, WUHOU DISTRICT, CHENGDU CITY, SICHUAN PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20101109 Address after: The people of Wuhou District road Chengdu city Sichuan province 610041 four Branch Road No. 3 National 863 software incubator base in Sichuan on the third floor Patentee after: Chengdu Stone New Energy Technology Co., Ltd. Address before: Chengdu City, Sichuan Province Branch Road 610041 No. 3 National 863 software incubator base in Sichuan 3 floor Patentee before: CSG Holding Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU HOT NEW ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER NAME: CHENGDU STONE NEW ENERGY TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: The people of Wuhou District road Chengdu city Sichuan province 610041 four Branch Road No. 3 National 863 software incubator base in Sichuan on the third floor Patentee after: Chengdu Hot New Energy Technology Co., Ltd. Address before: The people of Wuhou District road Chengdu city Sichuan province 610041 four Branch Road No. 3 National 863 software incubator base in Sichuan on the third floor Patentee before: Chengdu Stone New Energy Technology Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: The people of Wuhou District road Chengdu city Sichuan province 610041 four Branch Road No. 3 Patentee after: Chengdu Hot New Energy Technology Co., Ltd. Address before: The people of Wuhou District road Chengdu city Sichuan province 610041 four Branch Road No. 3 National 863 software incubator base in Sichuan on the third floor Patentee before: Chengdu Hot New Energy Technology Co., Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Liquid-level monitoring device for boiler drum Effective date of registration: 20140208 Granted publication date: 20100217 Pledgee: The Agricultural Bank of Chengdu branch of Limited by Share Ltd Chinese Sichuan Pledgor: Chengdu Hot New Energy Technology Co., Ltd. Registration number: 2014510000003 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20160511 |