CN204479245U - A kind of H type low-level (stack-gas) economizer leak detecting device - Google Patents
A kind of H type low-level (stack-gas) economizer leak detecting device Download PDFInfo
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- CN204479245U CN204479245U CN201520137892.XU CN201520137892U CN204479245U CN 204479245 U CN204479245 U CN 204479245U CN 201520137892 U CN201520137892 U CN 201520137892U CN 204479245 U CN204479245 U CN 204479245U
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Abstract
The utility model relates to a kind of H type low-level (stack-gas) economizer leak detecting device, and be provided with several or ten several stopple coupons, the air intake opening end of this stopple coupon is arranged on the leeward side of H type low-level (stack-gas) economizer, and the other end of stopple coupon stretches out outside flue; Stopple coupon outside flue is sequentially provided with from inside to outside flue gas filter screen, scavenging duct, sampling pump and online humidity sensor; The gas outlet end of the stopple coupon outside flue is communicated with the air intake opening of the female pipe of a gas outlet and the return-air be communicated with in flue; The tube wall of the stopple coupon in described flue is provided with many full aspirating holes; Be provided with control box in addition to carry out switch control rule with described sampling pump, scavenging duct and be connected, carry out signal with described humidity sensor and be connected; This controller and Power Plant DCS real-time system for monitoring and pre-warning carry out signal and control linkage.The utility model is applicable to the Leak Detection of the H type economizer of power plant's flue, and structure is simple; Accuracy in detection is high; Real-Time Monitoring; Can abnormal alarm; Automatic cleaning stopple coupon pipeline; Energy consumption is little; Life-span is long; Safeguard simple.
Description
Technical field
The utility model relates to a kind of utility appliance of economizing on coal of large coal-fired boiler, specifically a kind of H type economizer leakage monitoring device.Belong to residual heat of electric power plant to reclaim, energy-conserving and environment-protective technical field.
Background technology
Along with the anxiety of electricity coal supply and the situation of AND ENERGY RESOURCES CONSUMPTION IN CHINA further severe, country is more strict to energy-saving and cost-reducing requirement, and each large Power Group is all utilizing various means to reduce coal consumption.Meanwhile, along with the whole world is to the raising day by day of environmental protection requirement, China is also more and more higher to the standard of environmental protection.Within 2011, country has promulgated new " fossil-fuel power plant atmospheric pollutant emission standard " (GB13223-2011), and 2012 play enforcement.Relative to former standard, further increase thermal power plant SO
2, NOx and flue dust emission standard, reach and be even better than international advanced standard.
Domestic thermal power plant existing environmental protection equipment great majority can not meet new emission standard requirement, face the green technology transformation of a new round.Be seen as from present case and meet stricter NO
x, SO
2and dust emission standard, power plant needs the transformation carried out to have: low nitrogen burning transformation, denitrating flue gas transformation, cleaner reform, desulfurizing fly ash etc. in stove.In stove, low nitrogen burning transformation can cause exhaust gas temperature to raise in various degree, and denitrating flue gas, desulfurizing fly ash and cleaner reform all have certain requirement to exit gas temperature.Therefore, reducing exhaust gas temperature by rational means not only can Mist heat recovering, can also provide convenience for environmental transformation.
H type low-level (stack-gas) economizer technology is applied more and more in Large-scale fire-electricity unit.Under normal circumstances, be arranged in the H type low-level (stack-gas) economizer heat exchanger tube row in flue and mostly be aqueous medium, once leak, the safe operation of unit will be affected.Particularly be arranged in the H type low-level (stack-gas) economizer before fly-ash separator, occur to be easy to the damage causing upstream device, as electric precipitation, induced draft fan etc. when leaking.Therefore, find in time to leak, take appropriate measures as early as possible, avoid fault spread, in the application of H type low-level (stack-gas) economizer, become particularly important.Therefore need to propose structure more reasonable, Monitoring and Controlling is leakage monitoring control device more accurately.
Utility model content
The purpose of this utility model is to solve the problems of the technologies described above, a kind of H type economizer leakage pick-up unit is proposed, this device is based on domestic H type economizer behaviour in service with to the abundant for many years practical experience such as this type of product design, manufacture, installation, practicality, carries out that positive research and innovation completes.When occurring to leak according to H type economizer device; the humidity of flue gas changes; by being arranged in the Humidity Detection sampler of set of heat exchange tubes leeward side; the change of monitoring humidity, can realize effectively, timely, accurately, steady in a long-term premature leak heat exchanger tube being detected, thus the very first time taken measures; shorten stop time; reduce the damage of upstream device, reduce maintenance cost, improve unit operation reliability.
The utility model is realized by following technical scheme.
A kind of H type low-level (stack-gas) economizer leak detecting device, it is characterized in that: be provided with several or ten several stopple coupons, the air intake opening end of this stopple coupon is arranged on the leeward side of the H type low-level (stack-gas) economizer in large coal-fired boiler smokejack, i.e. smoke side, the other end and the gas outlet end of stopple coupon stretch out outside flue; Stopple coupon outside flue is sequentially provided with from inside to outside the flue gas filter screen filtering exhaust gas dust, the scavenging duct cleaning described flue gas filter screen, extracts the sampling pump of flue gas sample and detect the online humidity sensor of smoke moisture; The gas outlet end of the stopple coupon outside flue is communicated with the air intake opening of the female pipe of a return-air, and the gas outlet of the female pipe of this return-air is communicated with in flue; The tube wall of the stopple coupon in described flue is provided with many full aspirating holes; Be provided with control box in addition, this control box carries out switch control rule with described sampling pump, scavenging duct and is connected, and carries out signal be connected with described humidity sensor; This control box and Power Plant DCS real-time system for monitoring and pre-warning carry out signal and control linkage, and the structure of this signal and control linkage is: control box integrated signal sends DCS real-time system for monitoring and pre-warning to, for scavenging duct, sampling pump and humidity sensor are powered; DCS real-time system for monitoring and pre-warning provides real time data on computers for operations staff, also sends instruction simultaneously and operates and operation exception early warning H type low-level (stack-gas) economizer leak detection apparatus.
The utility model improves further and the additional project of enforcement is:
Leeward side in described flue and smoke side bottom are provided with catch basin and draining valve.
The body that described stopple coupon stretches into flue portion is the stainless-steel tube of wear resistant corrosion resistant, and the body outside flue is plain carbon steel pipe.
Described aspirating hole place is provided with slightly, fine dust screen membrane.
The utility model has significantly following advantage compared with existing product:
1) structure is simple; 2) accuracy in detection is high; 3) Real-Time Monitoring is realized; 4) can abnormal alarm; 5) automatic cleaning stopple coupon pipeline; 6) energy consumption is little; 7) applied widely; 8) can judge whether economizer body is revealed intuitively.9) operation life is long; 10) safeguard simply; 11) in running, the accumulation can discharged in flue is leaked.
Profile of the present utility model is not by the restriction of this accompanying drawing, and the only change of profile, also belongs to the protection domain of this patent.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described: embodiment: see accompanying drawing, a kind of H type low-level (stack-gas) economizer leak detecting device, be provided with ten stopple coupons 1, the air intake opening end of this stopple coupon is arranged on the leeward side of the H type low-level (stack-gas) economizer 10 in large coal-fired boiler smokejack 8, i.e. smoke side, the other end and the gas outlet end of stopple coupon stretch out outside flue; Stopple coupon outside flue is sequentially provided with from inside to outside the flue gas filter screen 2 filtering exhaust gas dust, the scavenging duct 3 cleaning described flue gas filter screen, extracts the sampling pump 4 of flue gas sample and detect the online humidity sensor 5 of smoke moisture; The gas outlet end of the stopple coupon outside flue is communicated with the air intake opening of the female pipe 11 of a return-air, and the gas outlet of the female pipe of this return-air is communicated with in flue; The tube wall of the stopple coupon in described flue is provided with many full aspirating holes; Be provided with control box 6 in addition, this control box carries out switch control rule with described sampling pump, scavenging duct and is connected, and carries out signal be connected with described humidity sensor; This control box and Power Plant DCS real-time system for monitoring and pre-warning 7 carry out signal and control linkage, and the structure of this signal and control linkage is: control box integrated signal sends DCS real-time system for monitoring and pre-warning to, for scavenging duct, sampling pump and humidity sensor are powered; DCS real-time system for monitoring and pre-warning provides real time data on computers for operations staff, also sends instruction simultaneously and operates and operation exception early warning H type low-level (stack-gas) economizer leak detection apparatus.Leeward side in described flue and smoke side bottom are provided with catch basin and draining valve 9.The body that described stopple coupon stretches into flue portion is the stainless-steel tube of wear resistant corrosion resistant, and the body outside flue is plain carbon steel pipe.Described aspirating hole place is provided with slightly, fine dust screen membrane.
It should be pointed out that under the prerequisite not departing from the new basic structure of this practicality, can also make some improvement and change, these improve and change the protection domain that also should be considered as this patent.
Claims (4)
1. a H type low-level (stack-gas) economizer leak detecting device, it is characterized in that: be provided with several or ten several stopple coupons (1), the air intake opening end of this stopple coupon is arranged on the leeward side of the H type low-level (stack-gas) economizer (10) in large coal-fired boiler smokejack (8), i.e. smoke side, the other end and the gas outlet end of stopple coupon stretch out outside flue; Stopple coupon outside flue is sequentially provided with from inside to outside the flue gas filter screen (2) filtering exhaust gas dust, the scavenging duct (3) cleaning described flue gas filter screen, extracts the sampling pump (4) of flue gas sample and detect the online humidity sensor (5) of smoke moisture; The air intake opening that gas outlet end and a return-air mother of the stopple coupon outside flue manage (11) is communicated with, and the gas outlet of the female pipe of this return-air is communicated with in flue; The tube wall of the stopple coupon in described flue is provided with many full aspirating holes; Be provided with control box (6) in addition, this control box carries out switch control rule with described sampling pump, scavenging duct and is connected, and carries out signal be connected with described humidity sensor; This control box and Power Plant DCS real-time system for monitoring and pre-warning (7) carry out signal and control linkage, the structure of this signal and control linkage is: control box integrated signal sends DCS real-time system for monitoring and pre-warning to, for scavenging duct, sampling pump and humidity sensor are powered; DCS real-time system for monitoring and pre-warning provides real time data on computers for operations staff, also sends instruction simultaneously and operates and operation exception early warning H type low-level (stack-gas) economizer leak detection apparatus.
2. pick-up unit according to claim 1, is characterized in that: the leeward side in described flue and smoke side bottom are provided with catch basin and draining valve (9).
3. pick-up unit according to claim 1, is characterized in that: the body that described stopple coupon stretches into flue portion is the stainless-steel tube of wear resistant corrosion resistant, and the body outside flue is plain carbon steel pipe.
4. pick-up unit according to claim 1, is characterized in that: described aspirating hole place is provided with slightly, fine dust screen membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520137892.XU CN204479245U (en) | 2015-03-11 | 2015-03-11 | A kind of H type low-level (stack-gas) economizer leak detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520137892.XU CN204479245U (en) | 2015-03-11 | 2015-03-11 | A kind of H type low-level (stack-gas) economizer leak detecting device |
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| CN204479245U true CN204479245U (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520137892.XU Expired - Fee Related CN204479245U (en) | 2015-03-11 | 2015-03-11 | A kind of H type low-level (stack-gas) economizer leak detecting device |
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| CN (1) | CN204479245U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953988A (en) * | 2016-05-30 | 2016-09-21 | 中国神华能源股份有限公司 | Boiler and method and device for detecting internal leakage of heating surface thereof |
| CN106247311A (en) * | 2016-10-08 | 2016-12-21 | 陕西南梁矿业有限公司 | Leak out monitoring device, leak out automatic blowing-out device and economizer |
| CN106768656A (en) * | 2016-12-27 | 2017-05-31 | 烟台龙源电力技术股份有限公司 | A kind of cooler module leak detecting device |
| CN108020386A (en) * | 2018-01-24 | 2018-05-11 | 青岛达能环保设备股份有限公司 | The pre- leak detection system of large-scale low-temperature economizer |
| CN108318186A (en) * | 2018-04-06 | 2018-07-24 | 宜兴港华燃气有限公司 | A kind of forced-ventilated water heater flue check device and its application method |
| CN109752221A (en) * | 2018-12-30 | 2019-05-14 | 光力科技股份有限公司 | Probe tube and flue gas inspection device, the flue component for using the probe tube |
| CN113063551A (en) * | 2021-04-14 | 2021-07-02 | 建投邢台热电有限责任公司 | Device and method for judging quantity of leakage pipe bundles of heat pipe type low-temperature economizer |
-
2015
- 2015-03-11 CN CN201520137892.XU patent/CN204479245U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953988A (en) * | 2016-05-30 | 2016-09-21 | 中国神华能源股份有限公司 | Boiler and method and device for detecting internal leakage of heating surface thereof |
| CN106247311A (en) * | 2016-10-08 | 2016-12-21 | 陕西南梁矿业有限公司 | Leak out monitoring device, leak out automatic blowing-out device and economizer |
| CN106768656A (en) * | 2016-12-27 | 2017-05-31 | 烟台龙源电力技术股份有限公司 | A kind of cooler module leak detecting device |
| CN106768656B (en) * | 2016-12-27 | 2023-06-30 | 烟台龙源电力技术股份有限公司 | Cooler module leakage detection device |
| CN108020386A (en) * | 2018-01-24 | 2018-05-11 | 青岛达能环保设备股份有限公司 | The pre- leak detection system of large-scale low-temperature economizer |
| CN108318186A (en) * | 2018-04-06 | 2018-07-24 | 宜兴港华燃气有限公司 | A kind of forced-ventilated water heater flue check device and its application method |
| CN108318186B (en) * | 2018-04-06 | 2024-03-26 | 宜兴港华燃气有限公司 | Forced-ventilated type water heater flue checking device and application method thereof |
| CN109752221A (en) * | 2018-12-30 | 2019-05-14 | 光力科技股份有限公司 | Probe tube and flue gas inspection device, the flue component for using the probe tube |
| CN113063551A (en) * | 2021-04-14 | 2021-07-02 | 建投邢台热电有限责任公司 | Device and method for judging quantity of leakage pipe bundles of heat pipe type low-temperature economizer |
| CN113063551B (en) * | 2021-04-14 | 2023-08-15 | 建投邢台热电有限责任公司 | Device and method for judging number of leakage tube bundles of heat pipe type low-temperature economizer |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20150715 Termination date: 20190311 |