CN103672847A - Steam injection boiler with convection section high-temperature alarm device and alarm method thereof - Google Patents
Steam injection boiler with convection section high-temperature alarm device and alarm method thereof Download PDFInfo
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- CN103672847A CN103672847A CN201310706035.2A CN201310706035A CN103672847A CN 103672847 A CN103672847 A CN 103672847A CN 201310706035 A CN201310706035 A CN 201310706035A CN 103672847 A CN103672847 A CN 103672847A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010793 Steam injection (oil industry) Methods 0.000 title abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 230000005855 radiation Effects 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims description 42
- 239000007924 injection Substances 0.000 claims description 42
- 238000007664 blowing Methods 0.000 claims description 7
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
The invention provides a steam injection boiler with a convection section high-temperature alarm device and an alarm method thereof. Steam injection boiler includes through feedwater preheater and heat exchanger, steam injection boiler still includes convection current section high temperature alarm device, convection current section high temperature alarm device includes: the temperature control device comprises a first temperature measuring element, a second temperature measuring element, a third temperature measuring element, a temperature transmitter and a control element, wherein the input end of the control element is connected with the output end of the temperature transmitter through a lead and used for receiving a temperature signal of the temperature transmitter, and when a temperature value corresponding to the temperature signal exceeds a preset alarm temperature value, the control element sends an alarm signal and a fire extinguishing and blowing-out instruction to a control system of the steam injection boiler. According to the invention, three parameters of the temperature of the convection section inlet, the convection section outlet and the radiation section inlet are monitored and controlled according to the water shortage phenomenon of the convection section, and early warning is carried out on hidden troubles after internal leakage of the preheater and the heat exchanger, so that major accidents are avoided.
Description
Technical field
The present invention relates to a kind of warning device, relate in particular to a kind of injection boiler and alarm method thereof with convection section high-temperature alarming device.
Background technology
Feedwater preheater is one of key equipment of injection boiler, belongs to high pressure inner and outer pipes structure, cannot detect, and has certain potential safety hazard.And, existing injection boiler has convection section, changeover portion and the radiant section being communicated with successively, boiler heat-exchanger stress or corrosion cause the ftractureing phenomenon of interior leakage happens occasionally on injection boiler, once process not in time, the serious consequence such as will cause that injection boiler convection section scaling loss is scrapped, brings great economic loss.
Because the technology hidden danger that above-mentioned existing injection boiler exists, this art designs people is based on research for many years and field experience and professional knowledge, after leaking in heat exchanger during in conjunction with actual use, will cause hot and cold water to be directly mixed into radiant section, convection section only has a small amount of water, certainly will cause like this variation characteristic into, outlet temperature, positive improvement and bring new ideas in addition, a kind ofly can carry out to the recessive hidden danger of preheater the injection boiler with convection section high-temperature alarming device and the alarm method of early warning to realizing.
Summary of the invention
The object of this invention is to provide and a kind ofly can carry out to the recessive hidden danger of preheater the injection boiler with convection section high-temperature alarming device of early warning.
Another object of the present invention is to provide a kind of alarm method that uses above-mentioned injection boiler convection section high-temperature alarming device.
For achieving the above object, the present invention proposes a kind of injection boiler with convection section high-temperature alarming device, described injection boiler comprises feed water preheater and the heat exchanger being connected by pipeline, described feed water preheater comprises outer tube and inner tube, described heat exchanger comprises convection section, changeover portion and the radiant section being communicated with successively, described injection boiler also comprises convection section high-temperature alarming device, and described convection section high-temperature alarming device comprises:
The first temperature element, is arranged in the outer tube outlet and the pipeline between the entrance of described convection section of described feed water preheater, for measuring the water temperature of convection section porch;
The second temperature element, is arranged on the pipeline between the outlet of described convection section and the interior tube inlet of described feed water preheater, for measuring the water temperature in convection section exit;
The 3rd temperature element, is arranged in the inner tube outlet and the pipeline between described radiant section entrance of described feed water preheater, for the water temperature of measuring radiation section porch;
Temperature transmitter, the input of described temperature transmitter is connected with described the first temperature element, the second temperature element, the 3rd temperature element respectively by wire, for the treatment of the temperature sensor signal of described the first temperature element, the second temperature element, the 3rd temperature element output, and be converted into temperature signal;
Control element, the input of described control element is connected by wire with the output of described temperature transmitter, for receiving the temperature signal of described temperature transmitter, when the corresponding temperature value of described temperature signal exceeds preset alarm temperature value, described control element sends alarm signal and fire extinguishing blowing out instruction to the control system of injection boiler.
The injection boiler with convection section high-temperature alarming device as above, wherein, described the first temperature element, the second temperature element, the 3rd temperature element are thermocouple.
The injection boiler with convection section high-temperature alarming device as above, wherein, described control element is Programmable Logic Controller.
The injection boiler with convection section high-temperature alarming device as above, wherein, described wire is two-wire system shielding compensating wire.
The injection boiler with convection section high-temperature alarming device as above, wherein, described temperature sensor signal is voltage signal, described temperature signal is current signal.
The present invention also provides a kind of injection boiler convection section high temperature alarm method, and this alarm method is used in the above-mentioned injection boiler with convection section high-temperature alarming device, and described alarm method comprises:
Step a: the first temperature element, the second temperature element, the 3rd temperature element gather respectively the temperature of convection section entrance, convection section outlet, radiant section entrance, generate temperature sensor signal separately and are delivered to temperature transmitter;
Step b: temperature transmitter is converted into temperature sensor signal described in each temperature signal and is delivered to control element;
Step c: control element receives the temperature signal of described temperature transmitter and processes, when the corresponding temperature value of described temperature signal exceeds preset alarm temperature value, described control element sends alarm signal and fire extinguishing blowing out instruction to the control system of injection boiler.
Injection boiler convection section high temperature alarm method as above, wherein, described temperature sensor signal is voltage signal, described temperature signal is current signal.
Compared with prior art, the present invention has following characteristics and advantage:
The present invention, according to convection section lack of water phenomenon, carries out Monitoring and Controlling from convection section entrance, convection section outlet, three parameters of radiant section inlet temperature, and the recessive hidden danger after leaking in preheater and heat exchanger is carried out to early warning, avoids major accident to occur.
Accompanying drawing explanation
Accompanying drawing described here is only for task of explanation, and is not intended to limit by any way scope disclosed by the invention.In addition, the shape of each parts in figure and proportional sizes etc. are only schematically, for helping the understanding of the present invention, are not shape and the proportional sizes that specifically limits each parts of the present invention.Those skilled in the art, under instruction of the present invention, can select various possible shapes and proportional sizes to implement the present invention as the case may be.
Fig. 1 is the structural representation that the present invention has the injection boiler of convection section high-temperature alarming device.
Description of reference numerals:
1-feed water preheater; 2-heat exchanger; 3-convection section; 4-changeover portion; 5-radiant section; 6-temperature transmitter; 7-control element; 8-wire; 10-pipeline; 11-the first temperature element; 12-the second temperature element; 13-the 3rd temperature element.
The specific embodiment
With the description of the specific embodiment of the invention, can more be well understood to details of the present invention by reference to the accompanying drawings.But the specific embodiment of the present invention described here,, for explaining object of the present invention, is only limitation of the present invention and can not be understood as by any way.Under instruction of the present invention, technical staff can conceive based on possible distortion arbitrarily of the present invention, and these all should be regarded as belonging to scope of the present invention.
Please refer to Fig. 1, for the present invention has the structural representation of the injection boiler of convection section high-temperature alarming device.As shown in Figure 1, the injection boiler with convection section high-temperature alarming device of the present invention, comprise the feed water preheater 1 and the heat exchanger 2 that by pipeline 10, are connected, feed water preheater 1 comprises outer tube and inner tube, heat exchanger 2 comprises convection section 3, changeover portion 4 and the radiant section 5 being communicated with successively, described injection boiler also comprises convection section high-temperature alarming device, and described convection section high-temperature alarming device comprises: the first temperature element 11, the second temperature element 12, the 3rd temperature element 13, temperature transmitter 6 and control element 7.Boiler feedwater is introduced into the outer tube of feed water preheater 1 via pipeline, then enters convection section 4, then flows out the inner tube that convection section 4 enters feed water preheater 1 again, and finally the inner tube by feed water preheater 1 flows out into radiant section 5.Wherein, the first temperature element 11 is arranged in the outer tube outlet and the pipeline between the entrance of convection section 4 of feed water preheater 1, for measuring the water temperature of convection section 3 porch; The second temperature element 12 is arranged on the pipeline between the outlet of convection section 3 and the interior tube inlet of feed water preheater 1, for measuring the water temperature in convection section 3 exits; The 3rd temperature element 13 is arranged in the inner tube outlet and the pipeline between radiant section 5 entrances of feed water preheater 1, for the water temperature of measuring radiation section 5 porch; The first temperature element 11, the second temperature element 12, the 3rd temperature element 13 are temperature sensor signal (voltage signal) separately by its measured temperature inversion.The input of temperature transmitter 6 is connected with the first temperature element 11, the second temperature element 12, the 3rd temperature element 13 respectively by wire 8, for the treatment of the temperature sensor signal of the first temperature element 11, the second temperature element 12, the 3rd temperature element 13 outputs, and be converted into temperature signal (current signal); The input of control element 7 is connected by wire 8 with the output of temperature transmitter 6, for receiving the temperature signal of temperature transmitter 6 and this temperature signal being converted to corresponding current signal, is delivered to display unit.When the corresponding temperature value of temperature signal exceeds the interior preset alarm temperature value of control element 7, control element 7 sends alarm signal and fire extinguishing blowing out instruction to the control system of injection boiler.
In the present embodiment, the first temperature element 11, the second temperature element 12, the 3rd temperature element 13 are thermocouple.
In the present embodiment, control element 7 is Programmable Logic Controller (PLC).Certainly, also can adopt other known control element, as long as can realize desired function of the present invention.
Further, wire 8 adopts two-wire system shielding compensating wire, to guarantee the transmission of signal data.
The present invention is according to convection section 3 lack of water phenomenons, from convection section 3 entrances, convection section 3 outlets, three parameters of radiant section 5 inlet temperature, carry out Monitoring and Controlling, on the pipeline between feed water preheater 1 outer tube outlet and boiler convection section 3, a point for measuring temperature is installed, is settled a thermocouple temperature measurement element; And enter, export respectively to install a point for measuring temperature in feed water preheater inner tube, settle a thermocouple temperature measurement element.Thermocouple adopts two-wire system shielding compensating wire, is connected to temperature transmitter 6 signal input parts, and output is delivered to PLC by signal.After PLC calculates by processing, touching screen display real-time temperature.Simultaneously PLC can the high alarming value of set temperature, when the temperature value measuring surpasses preset alarm temperature value, to the control system of injection boiler, sends alarm signal and fire extinguishing blowing out instruction.
The present invention also provides a kind of injection boiler convection section high temperature alarm method, and this alarm method is used in the above-mentioned injection boiler with convection section high-temperature alarming device, and this alarm method comprises:
Step a: the first temperature element, the second temperature element, the 3rd temperature element gather respectively the temperature of convection section entrance, convection section outlet, radiant section entrance, generate temperature sensor signal (voltage signal) separately and are delivered to temperature transmitter;
Step b: temperature transmitter described in each temperature sensor signal be converted into temperature signal (current signal) and be delivered to control element;
Step c: control element receives the temperature signal of temperature transmitter and processes, and judge whether the corresponding temperature value of this temperature signal is greater than preset alarm temperature value in control element, when the corresponding temperature value of described temperature sensor signal exceeds preset alarm temperature value, control element sends alarm signal and fire extinguishing blowing out instruction to the control system of injection boiler.
Detailed explanation for the respective embodiments described above, its object is only the present invention to make an explanation, so that can understand better the present invention, but, it is limitation of the present invention that these descriptions can not be construed to any reason, particularly, each feature of describing in different embodiments also can be combined mutually, thereby form other embodiments, except there being clearly contrary description, these features should be understood to can be applied in any one embodiment, and are also not only confined to described embodiment.
Claims (7)
1. an injection boiler with convection section high-temperature alarming device, described injection boiler comprises feed water preheater and the heat exchanger being connected by pipeline, described feed water preheater comprises outer tube and inner tube, described heat exchanger comprises convection section, changeover portion and the radiant section being communicated with successively, it is characterized in that, described injection boiler also comprises convection section high-temperature alarming device, and described convection section high-temperature alarming device comprises:
The first temperature element, is arranged in the outer tube outlet and the pipeline between the entrance of described convection section of described feed water preheater, for measuring the water temperature of convection section porch;
The second temperature element, is arranged on the pipeline between the outlet of described convection section and the interior tube inlet of described feed water preheater, for measuring the water temperature in convection section exit;
The 3rd temperature element, is arranged in the inner tube outlet and the pipeline between described radiant section entrance of described feed water preheater, for the water temperature of measuring radiation section porch;
Temperature transmitter, the input of described temperature transmitter is connected with described the first temperature element, the second temperature element, the 3rd temperature element respectively by wire, for the treatment of the temperature sensor signal of described the first temperature element, the second temperature element, the 3rd temperature element output, and be converted into temperature signal;
Control element, the input of described control element is connected by wire with the output of described temperature transmitter, for receiving the temperature signal of described temperature transmitter, when the corresponding temperature value of described temperature signal exceeds preset alarm temperature value, described control element sends alarm signal and fire extinguishing blowing out instruction to the control system of injection boiler.
2. the injection boiler with convection section high-temperature alarming device as claimed in claim 1, is characterized in that, described the first temperature element, the second temperature element, the 3rd temperature element are thermocouple.
3. the injection boiler with convection section high-temperature alarming device as claimed in claim 1, is characterized in that, described control element is Programmable Logic Controller.
4. the injection boiler with convection section high-temperature alarming device as claimed in claim 1, is characterized in that, described wire is two-wire system shielding compensating wire.
5. the injection boiler with convection section high-temperature alarming device as claimed in claim 1, is characterized in that, described temperature sensor signal is voltage signal, and described temperature signal is current signal.
6. an injection boiler convection section high temperature alarm method, is characterized in that, described alarm method comprises:
Step a: the first temperature element, the second temperature element, the 3rd temperature element gather respectively the temperature of convection section entrance, convection section outlet, radiant section entrance, generate temperature sensor signal separately and are delivered to temperature transmitter;
Step b: temperature transmitter is converted into temperature sensor signal described in each temperature signal and is delivered to control element;
Step c: control element receives the temperature signal of described temperature transmitter and processes, when the corresponding temperature value of described temperature signal exceeds preset alarm temperature value, described control element sends alarm signal and fire extinguishing blowing out instruction to the control system of injection boiler.
7. injection boiler convection section high temperature alarm method as claimed in claim 6, is characterized in that, described temperature sensor signal is voltage signal, and described temperature signal is current signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310706035.2A CN103672847B (en) | 2013-12-19 | 2013-12-19 | Steam injection boiler with convection section high-temperature alarm device and alarm method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310706035.2A CN103672847B (en) | 2013-12-19 | 2013-12-19 | Steam injection boiler with convection section high-temperature alarm device and alarm method thereof |
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| CN103672847A true CN103672847A (en) | 2014-03-26 |
| CN103672847B CN103672847B (en) | 2015-07-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178618A (en) * | 2019-07-02 | 2021-01-05 | 中国石油天然气股份有限公司 | Steam injection boiler fault alarm method, device and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4375273A (en) * | 1980-05-19 | 1983-03-01 | Samson Aktiengesellschaft | Combustion automatic control system |
| JP2736344B2 (en) * | 1988-05-20 | 1998-04-02 | ウエスチングハウス・エレクトリック・コーポレーション | Measuring system to monitor fluid condition |
| US20090056649A1 (en) * | 2007-08-31 | 2009-03-05 | Mackenzie Bruce G | Boiler Protection Apparatus and Method |
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| CN103216812A (en) * | 2013-04-15 | 2013-07-24 | 王衡 | Method for on-line monitoring and alarming of convection heating face flue gas temperature field of power station boiler |
| CN103388816A (en) * | 2013-07-29 | 2013-11-13 | 哈尔滨鑫北源电站设备制造有限公司 | Oil field steam-injection boiler overheated steam injection system |
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-
2013
- 2013-12-19 CN CN201310706035.2A patent/CN103672847B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4375273A (en) * | 1980-05-19 | 1983-03-01 | Samson Aktiengesellschaft | Combustion automatic control system |
| JP2736344B2 (en) * | 1988-05-20 | 1998-04-02 | ウエスチングハウス・エレクトリック・コーポレーション | Measuring system to monitor fluid condition |
| US20090056649A1 (en) * | 2007-08-31 | 2009-03-05 | Mackenzie Bruce G | Boiler Protection Apparatus and Method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178618A (en) * | 2019-07-02 | 2021-01-05 | 中国石油天然气股份有限公司 | Steam injection boiler fault alarm method, device and system |
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| CN103672847B (en) | 2015-07-08 |
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