CN201382399Y - Automatic monitoring device for continuous blowdown of boiler - Google Patents
Automatic monitoring device for continuous blowdown of boiler Download PDFInfo
- Publication number
- CN201382399Y CN201382399Y CN200920140791U CN200920140791U CN201382399Y CN 201382399 Y CN201382399 Y CN 201382399Y CN 200920140791 U CN200920140791 U CN 200920140791U CN 200920140791 U CN200920140791 U CN 200920140791U CN 201382399 Y CN201382399 Y CN 201382399Y
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- pipeline
- boiler
- blowdown
- continuous blowdown
- valve
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Abstract
The utility model relates to an automatic monitoring device for continuous blowdown of a boiler, which is installed on a boiler continuous blowdown main pipe and comprises a sampling on-line monitoring pipeline, an emergency blowdown pipeline and a normal continuous blowdown pipeline. The boiler continuous blowdown automatic monitoring device is characterized in that the sampling on-line monitoring pipeline, the emergency blowdown pipeline and the normal continuous blowdown pipeline are all connected with the boiler continuous blowdown main pipe in parallel; a sampling valve, a boiler water cooler and an electrical-conductivity on-line monitoring meter are arranged on the sampling on-line monitoring pipeline, and a sampling collecting tank is connected at an outlet of the pipeline; a maintenance shut-off valve and an automatic control valve are arranged on the emergency blowdown pipeline, and a blowdown expander is connected at an outlet of the emergency blowdown pipeline; and a maintenance shut-off valve 9, a flowmeter 10 and a regulating valve 11 are arranged on the normal continuous blowdown pipeline, and an outlet of the normal continuous blowdown pipeline is connected with the outlet of the emergency blowdown pipeline in parallel. The device with continuous blowdown and emergency blowdown functions has the advantages of energy saving, emission reduction, reliable working, convenient installation, etc.
Description
Technical field
The utility model relates to a kind of boiler blow-off automaton, particularly a kind of continuous blowdown system of boiler automatic monitoring device that is used for.
Background technology
At present, the blowdown rate of sugar refinery boiler is 5%-15%, is far longer than the station boiler standard.The blowdown of boiler always will be lost a part of heat, practice shows: the every increase by 1% of boiler blowdown rate, may make the consumption of fuel increase by 0.3%, blowdown rate is big more, the heat of loss is big more, the economic loss that then causes is big more, so guaranteeing should to reduce the blowdown rate of boiler under the qualified situation of Boiler Steam quality as far as possible.
The size of the blowdown flow rate of boiler is directly related with the quality of feedwater and blowdown operation mode, and sugar refinery boiler blow-off relies on artificial regulatory fully, and the operative employee is for guaranteeing the Boiler Steam quality, and excessive blowdown problem is just very outstanding.
Relevant open source literature has been reported some boiler blow-offs method of control automatically, for example: the Xu Qingxin of China aluminum Co., Ltd. GuiZhou branch Co., Ltd mentions in " improving continuous blowdown system of boiler control and energy efficiency " (periodical name " Industrial Boiler " .2007 (2) .-48-51): the autocontrol method of continuous blowdown system of boiler is the actual conductivity by electrical conductivity inductor continuous measurement pot water, signal is input to the blowdown controller and compares with setting value, if measured value is lower than setting value, then keep blowoff valve to close.If measured value is higher than and sets value then output signal is opened blowoff valve to actuator and carried out blowdown.The concentration of dissolved solid in pot water (TDS value) is lower than setting value and just closes blowoff valve.
But there are some problems in the autocontrol method of the continuous blowdown system of boiler that above-mentioned document proposes: become the gap blowdown as continuous blowdown, can cause that the pot water liquid fluctuating of boiler is bigger; Normal blowdown flow rate can not measure etc.
Summary of the invention
For there is the gap blowdown in the autocontrol method that solves existing continuous blowdown system of boiler, problems such as normal blowdown flow rate can not measure, the utility model provides a kind of continuous blowdown system of boiler automatic monitoring device, but this device is in-service monitoring boiler pot electrical conductivity of water not only, normal continuous blowdown also, and read blowdown flow simultaneously, the boiler feedwater electrical conductivity exceeds standard and causes when boiler pot water conductivity surpasses setting value, can drop into urgent blowdown automatically, give the alarm prompting simultaneously.
The utility model is achieved in that the continuous blowdown system of boiler automatic monitoring device, is installed on the continuous blowdown system of boiler house steward, comprises sampling in-service monitoring pipeline, urgent blowoff line, normal continuous blowdown pipeline.Be characterized in: sampling in-service monitoring pipeline, urgent blowoff line, normal continuous blowdown pipeline all are connected in parallel with the continuous blowdown system of boiler house steward.Sample valve, pot water cooler, online electrical conductivity monitor are set on the sampling in-service monitoring pipeline, and the pipeline outlet accesses the sample feeder; Maintenance shut off valve, autocontrol valve are set on the urgent blowoff line, and pipeline exports the dirty expander that runs in; Maintenance shut off valve 9, flowmeter 10, control valve 11 are set on the normal continuous blowdown pipeline, and the pipeline outlet is connected in parallel with urgent blowoff line outlet.
Above-described pot water cooler can be heat exchangers such as board-like, shell-and-tube, bushing type, is used for cooling down high-temperature pot water.
Above-described online electrical conductivity monitor is TDS monitor also, is used for monitoring and controlling the concentration of the dissolved solid (TDS value) of boiler pot water.
Above-described autocontrol valve can be motor-driven valve or pneumatic operated valve, and it can be opened or close after receiving instruction, is used for controlling the urgent blowdown that boiler feedwater exceeds standard.
The utility model has the advantages that:
1. continuous blowdown: in normal running, boiler keeps continuous blowdown, pot water liquid level stabilizing, and blowdown flow rate is measurable, can regulate.
2. urgent blowdown: when boiler feedwater exceeds standard,, can increase blowdown flow rate automatically, carry out urgent blowdown, report to the police simultaneously for guaranteeing the Boiler Steam quality.
3. energy-saving and emission-reduction: this device can accurately be controlled the continuous blowdown amount of boiler, is guaranteeing the continuous blowdown amount can be controlled at minimum under the preceding topic of Boiler Steam quality.
4. reliable operation: this device technique maturation, simple in structure, reliable operation.
5. easy for installation: this device can be reequiped on the continuous blowdown pipeline of boiler, and quantities is few, is convenient to install.
Description of drawings
Fig. 1 is the structural representation of continuous blowdown system of boiler automatic monitoring device of the present utility model.
As shown in Figure 1, automatic monitoring device for continuous blowdown of boiler is by sample valve 2, pot water cooler 3, online electrical conductivity monitoring Instrument 4, maintenance shut off valve 6, autocontrol valve 7, maintenance shut off valve 9, flowmeter 10, control valve 11 form, and sampling is online Monitor that pipeline 1, urgent blowoff line 5, normal continuous blowdown pipeline 8 all are connected in parallel with continuous blowdown system of boiler house steward 0.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
Can see in the structural representation of the present utility model as shown in Figure 1, during the work of continuous blowdown system of boiler automatic monitoring device, sample valve 2 can be regulated the probe tube flow, pot water cooler 3 arrives normal temperature with the pot water cooling, so that online electrical conductivity monitor 4 can accurately be measured a pot electrical conductivity of water, online electrical conductivity monitor 4 can be set the water-soluble upper and lower bound of separating solid content of pot, arrive higher limit and just open autocontrol valve 7 urgent blowdowns, separate solid content when being returned to lower limit when pot is water-soluble, just close autocontrol valve 7 immediately, finish urgent blowdown.When the normal continuous blowdown of boiler was worked, control valve 11 was set the continuous blowdown system of boiler flow, and flowmeter 10 shows the continuous blowdown flows.Standard-sized sheet during maintenance shut off valve 6,9 operate as normal is just closed when the pipeline emergency maintenance.
Claims (4)
1, a kind of continuous blowdown system of boiler automatic monitoring device, be installed on the continuous blowdown system of boiler house steward (0), comprise sampling in-service monitoring pipeline (1), urgent blowoff line (5), normal continuous blowdown pipeline (8), it is characterized in that: sampling in-service monitoring pipeline (1), urgent blowoff line (5), normal continuous blowdown pipeline (8) all are connected in parallel with continuous blowdown system of boiler house steward (0), sampling in-service monitoring pipeline (1) is provided with sample valve (2), pot water cooler (3), online electrical conductivity monitor (4), and the pipeline outlet accesses the sample feeder; Urgent blowoff line (5) is provided with maintenance shut off valve (6), autocontrol valve (7), and pipeline exports the dirty expander that runs in; Normal continuous blowdown pipeline (8) is provided with maintenance shut off valve (9), flowmeter (10), control valve (11), and the pipeline outlet is connected in parallel with urgent blowoff line outlet.
2, continuous blowdown system of boiler automatic monitoring device according to claim 1 is characterized in that: a pot water cooler (3) can be heat exchangers such as board-like, shell-and-tube, bushing type.
3, continuous blowdown system of boiler automatic monitoring device according to claim 1 is characterized in that: online electrical conductivity monitor (4) is TDS monitor also.
4, continuous blowdown system of boiler automatic monitoring device according to claim 1 is characterized in that: autocontrol valve (7) can be motor-driven valve or pneumatic operated valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920140791U CN201382399Y (en) | 2009-04-30 | 2009-04-30 | Automatic monitoring device for continuous blowdown of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920140791U CN201382399Y (en) | 2009-04-30 | 2009-04-30 | Automatic monitoring device for continuous blowdown of boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201382399Y true CN201382399Y (en) | 2010-01-13 |
Family
ID=41525872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920140791U Expired - Fee Related CN201382399Y (en) | 2009-04-30 | 2009-04-30 | Automatic monitoring device for continuous blowdown of boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201382399Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080820A (en) * | 2011-01-06 | 2011-06-01 | 西安交大思源科技股份有限公司 | Optimal energy-saving control method for surface pollution discharge of steam boiler |
| CN103418562A (en) * | 2013-08-09 | 2013-12-04 | 国家电网公司 | Water-cooled wall chemical cleaning monitoring tube |
| CN113137594A (en) * | 2021-03-18 | 2021-07-20 | 国家能源集团国源电力有限公司 | Boiler drum pollution discharge control method and device |
| CN113551220A (en) * | 2021-07-22 | 2021-10-26 | 广东鸿业建材科技有限公司 | Based on boiler waste heat recovery utilizes system |
-
2009
- 2009-04-30 CN CN200920140791U patent/CN201382399Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080820A (en) * | 2011-01-06 | 2011-06-01 | 西安交大思源科技股份有限公司 | Optimal energy-saving control method for surface pollution discharge of steam boiler |
| CN103418562A (en) * | 2013-08-09 | 2013-12-04 | 国家电网公司 | Water-cooled wall chemical cleaning monitoring tube |
| CN113137594A (en) * | 2021-03-18 | 2021-07-20 | 国家能源集团国源电力有限公司 | Boiler drum pollution discharge control method and device |
| CN113551220A (en) * | 2021-07-22 | 2021-10-26 | 广东鸿业建材科技有限公司 | Based on boiler waste heat recovery utilizes system |
| CN113551220B (en) * | 2021-07-22 | 2022-04-01 | 广东鸿业建材科技有限公司 | Based on boiler waste heat recovery utilizes system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20110430 |