CN101957166B - Long-distance high-temperature gap measuring probe - Google Patents
Long-distance high-temperature gap measuring probe Download PDFInfo
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- CN101957166B CN101957166B CN 201010264645 CN201010264645A CN101957166B CN 101957166 B CN101957166 B CN 101957166B CN 201010264645 CN201010264645 CN 201010264645 CN 201010264645 A CN201010264645 A CN 201010264645A CN 101957166 B CN101957166 B CN 101957166B
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- plug
- solenoid
- housing
- adapter sleeve
- connecting sleeve
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Abstract
The invention relates to a long-distance high-temperature gap measuring device which comprises a signal processor, a bottleneck-shaped connecting sleeve and a solenoid, wherein the bottleneck-shaped connecting sleeve is arranged in a shell and provided with a heavy caliber and a small caliber, the solenoid for winding a signal wire is arranged below the connecting sleeve, the upper part of the solenoid is sleeved with the heavy caliber of the connecting sleeve, a plug with the upper part positioned in the connecting sleeve is arranged in the solenoid, the middle of the plug is provided with a pin capable of fixing the plug on the connecting sleeve and the upper part of the same is provided with a pressure sheet fixing the upper part of the solenoid, the lower part of the plug is provided with a gasket and the bottom is provided with a liner, a heat isolating layer is arranged in the shell, a seal plate and a nut cap are arranged at a lower port of the shell, the nut cap is used for fixing the seal plate through threads, and the top of the shell is provided with a sealing nut cap enabling the signal wire to penetrate out of the middle of the shell. Through measuring and adjusting a gap between a fan-shaped plate at the upper part of an air preheater and a radial sealing sheet of a rotor, a gap between the upper part of the fan-shaped plate and the radial sealing sheet of the rotor is kept minimum, thus the air leakage is reduced, the purposes of saving energy and reducing consumption are achieved, the detection distance can reach 0-20mm; and the invention has the advantages of good linearity and high precision, and is suitable for high-temperature gap detection.
Description
Technical field
The present invention relates to a kind of length apart from the high temperature gap measuring apparatus, be particularly useful for the gap detection between station boiler rotary regenerative air preheater fanning strip and the apex seal.
Background technology
Rotary regenerative air preheater is meant rotor and the counterrotating a kind of air preheater of fan housing.When the high-temperature flue gas of boiler furnace discharge is flowed through primary heater rotor one side from top to bottom, the heat accumulating element in the high-temperature flue gas heating rotor.When the heat accumulating element that has heated forwarded opposite side (air side) to rotor, the cold air heat accumulating element of flowing through was from the bottom up taken away heat, thereby reached the purpose of preheating cold air.Because there is the temperature difference up and down in rotor when being heated, mushroom deformation takes place, the gap between top fanning strip and rotor radial seal sheet is increased.
Because seal clearance increases, cause the inleakage of air preheater to increase, thereby influence the efficient of boiler.If the rotor that can kinetic measurement causes because of boiler load fluctuates and the variation of fan housing spacing, the spacing of real-time regulated rotor and fan housing is kept minimum, has also just controlled inleakage, just can improve the efficient of boiler.
High temperature clearance measurement probe is the key equipment of air-heater leakage gap adjustment control system gap detection; This device is according to eddy current effect (the distance difference of the relative checkout equipment of coil of coil; Current vortex intensity is different); When the rotor flange face gap that gap probe detects relatively changes (increase or reduce), the gap probe cooperates signal processor to export analog signals according to a certain percentage, and this analog signals is as the logic determines condition of gap adjustment control system.
High temperature gap detection probe major function is to be responsible for gathering the signal in gap, and the situation of target gap is collected, and converts corresponding electric signal output to through signal processor.The gap detection probe general measure distance of home or overseas producer making at present is little, and heatproof is low, can't satisfy the requirement of big load boiler (more than the 600MW, containing 600MW) air preheater heat accumulating element change-detection, cannot control effectively to inleakage.
Summary of the invention
Technical matters: the objective of the invention is to overcome the weak point in the prior art, provide a kind of simple in structure, easy to use, the length that can enlarge signal acquisition range is apart from the high temperature gap measuring apparatus.
Technical scheme: length of the present invention comprises signal processor apart from the high temperature gap measuring apparatus, also comprises housing; Be provided with one small-bore greatly, as to be bottleneck shape adapter sleeve in the housing, adapter sleeve top is provided with the screw that fixes with housing, and the adapter sleeve below is provided with the solenoid that twines signal wire; Solenoid top and adapter sleeve heavy caliber be fit mutually, is provided with the plug that its top is positioned at adapter sleeve in the solenoid, and the middle part of plug is provided with the pin that is fixed on the adapter sleeve; Its top is provided with the compressing tablet on stationary solenoids top, and the bottom of plug is provided with pad, and the bottom is provided with liner; Be provided with thermofin in the housing; Its lower port place is provided with shrouding, and is provided with the nut that the shrouding screw thread is fixing, and the top of housing is provided with the sealing nut that signal wire passes from the center.
Described housing constitutes by a sleeve with through the overhead gage that is bolted on the mounting bracket; Described plug constitutes by insulating base with the Connection Block of insulating base tabling.
Beneficial effect: the present invention is through measuring and regulate the gap between air preheater top fanning strip and the rotor radial seal sheet; To guarantee under any operating condition; Minimum is kept in gap between shape plate top and the rotor radial seal sheet; Thereby reduced inleakage, reached energy-saving and cost-reducing, improved the purpose of whole unit efficiency.Detect distance and can reach 0～20mm, linear good, accuracy of detection >=0.5mm, precision is high, and heatproof can reach 550 ℃, is applicable to the high temperature gap detection.
Description of drawings
Accompanying drawing is a structural drawing of the present invention.
Among the figure: 1-housing, 2-adapter sleeve, 3-plug, 4-solenoid, 5-shrouding, 6-pad; The 7-pin, the 8-liner, the 9-compressing tablet, the 10-nut, 11-connects sealing nut; The 12-mounting bracket, 13-thermofin, 14-attachment screw, 15-overhead gage, 16-high-temperature insulation asbestos layer.
Embodiment
Below in conjunction with accompanying drawing one embodiment of the present of invention are done further to describe:
Shown in the accompanying drawing, the long probe apart from the high temperature clearance measurement mainly is made up of housing 1, adapter sleeve 2, plug 3, solenoid 4, shrouding 5, pad 6, pin 7, liner 8, compressing tablet 9, nut 10, connection sealing nut 11.Housing 1 constitutes by sleeve with through the overhead gage 15 that is bolted on the mounting bracket 12, and the side plate of mounting bracket 12 is welded on the air preheater fanning strip.One small-bore greatly, as to be bottleneck shape adapter sleeve 2 is housed in the sleeve of housing 1, and adapter sleeve 2 outside big small-bore junctions are provided with the shoulder that leans against on the overhead gage 15, are fixed together through attachment screw 14.Adapter sleeve 2 lower ends are provided with and its heavy caliber solenoid 4 of fit mutually; Be provided with the high-temperature insulation asbestos layer 16 of isolation signals line in the solenoid 4; Be provided with the plug 3 that stretches in the adapter sleeve 2 in the high-temperature insulation asbestos layer 16, plug 3 constitutes by insulating base with the Connection Block of insulating base tabling; The top of plug 3 is provided with the pin 7 that is fixed on the adapter sleeve 2; The top is provided with the compressing tablet 9 on stationary solenoids 4 tops; The insulating base of plug 3 is provided with the pad 6 that insulating base is fixing, and the bottom of plug 3 is provided with liner 8, is provided with insulating layer of asbestos 13 in the housing 1; Its lower port place is provided with the ring sealing plate 5 of high temperature wear resistant ceramic, and ring sealing plate 5 is provided with its screw thread is fixed on the nut 10 on the housing 1.To be hedged off from the outer world except that the enclosure interior space the solenoid 4 through shrouding 5, prevent that foreign matter from getting into enclosure interior, avoid enclosure interior equipment to be collided or corrode; Liner 8 is installed in solenoid 4 lower bottom parts, and isolated solenoid 4 inside and outside directly contact, and prevents that small foreign body intrusion solenoid 4 tops from consequently influencing the generation of signal; Connect sealing nut 11 and connect together through screw thread and adapter sleeve, the signal wire that links to each other with signal processor passes from being connected sealing nut 11, avoids foreign matter to get into adapter sleeve.
During installation, solenoid 4 is installed in the central authorities of probing shell 1, and vertical bottom face will guarantee to pop one's head in the bottom surface over against gap detection target upper surface during on-the-spot the installation.When detector gap changed, gap signal changed thereupon, changed the 4～20mA standard electric signal corresponding with the gap into and carried out logic determines and control through being installed in signal transmitting device in the external control cabinet.
Claims (3)
1. one kind long comprises signal processor apart from the high temperature gap measuring apparatus, it is characterized in that: it comprises housing (1); Be provided with bore in the housing (1) and go up the adapter sleeve (2) that bore is little, be the bottleneck shape greatly, adapter sleeve (2) top is provided with the screw (14) that fixes with housing (1), and adapter sleeve (2) below is provided with the solenoid (4) that twines signal wire; Solenoid (4) top and adapter sleeve (2) heavy caliber be fit mutually; Be provided with the plug (3) that its top is positioned at adapter sleeve (2) in the solenoid (4), the middle part of plug (3) is provided with is fixed in the pin (7) on the adapter sleeve (2) with plug (3), and plug (3) top is provided with the compressing tablet (9) on stationary solenoids (4) top; The bottom of plug (3) is provided with pad (6); The bottom is provided with liner (8), is provided with thermofin (13) in the housing (1), and housing (1) lower port place is provided with shrouding (5); And being provided with the nut (10) that shrouding (5) screw thread is fixing, the top of housing (1) is provided with the sealing nut (11) that signal wire passes from the center.
2. length according to claim 1 is characterized in that apart from the high temperature gap measuring apparatus: described housing (1) constitutes by a sleeve with through the overhead gage that is bolted on the mounting bracket (12).
3. length according to claim 1 is characterized in that apart from the high temperature gap measuring apparatus: described plug (3) constitutes by insulating base with the Connection Block of insulating base tabling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010264645 CN101957166B (en) | 2010-08-27 | 2010-08-27 | Long-distance high-temperature gap measuring probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010264645 CN101957166B (en) | 2010-08-27 | 2010-08-27 | Long-distance high-temperature gap measuring probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101957166A CN101957166A (en) | 2011-01-26 |
| CN101957166B true CN101957166B (en) | 2012-07-04 |
Family
ID=43484640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010264645 Expired - Fee Related CN101957166B (en) | 2010-08-27 | 2010-08-27 | Long-distance high-temperature gap measuring probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101957166B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104932289A (en) * | 2014-03-18 | 2015-09-23 | 沈阳铝镁设计研究院有限公司 | Device and method for monitoring gap between rolling ring and cylinder of high-temperature rotary equipment |
| CN110530303B (en) * | 2019-08-28 | 2021-12-24 | 深圳东方锅炉控制有限公司 | Air leakage gap control system of pneumatic air preheater and control method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8320962D0 (en) * | 1983-08-03 | 1983-09-07 | Davidson & Co Ltd | Inductance sensor |
| GB8325512D0 (en) * | 1983-09-23 | 1983-10-26 | Davidson & Co Ltd | Controlling seal systems |
| CN1221779C (en) * | 2003-04-01 | 2005-10-05 | 上海东方机电科技公司 | Power station boiler rotary air preheater gap sensor |
| CN201764944U (en) * | 2010-08-27 | 2011-03-16 | 徐州燃控科技股份有限公司 | Long-distance high-temperature clearance measurement probe |
-
2010
- 2010-08-27 CN CN 201010264645 patent/CN101957166B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101957166A (en) | 2011-01-26 |
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| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 221004 No. 12 Yang Shan Road, Xuzhou Economic Development Zone, Jiangsu, China Patentee after: XUZHOU KERONG ENVIRONMENTAL RESOURCES Co.,Ltd. Address before: 221004 No. 12 Yang Shan Road, Xuzhou Economic Development Zone, Jiangsu, China Patentee before: XUZHOU COMBUSTION CONTROL TECHNOLOGY Co.,Ltd. |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhou Na Document name: payment instructions |
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| 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: 20120704 Termination date: 20210827 |