CN2575406Y - Lubricating device for concrete convey pump - Google Patents

Lubricating device for concrete convey pump Download PDF

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Publication number
CN2575406Y
CN2575406Y CN 02245819 CN02245819U CN2575406Y CN 2575406 Y CN2575406 Y CN 2575406Y CN 02245819 CN02245819 CN 02245819 CN 02245819 U CN02245819 U CN 02245819U CN 2575406 Y CN2575406 Y CN 2575406Y
Authority
CN
China
Prior art keywords
air preheater
pipe
press
expansion plug
expansion
Prior art date
Application number
CN 02245819
Other languages
Chinese (zh)
Inventor
胡新桥
Original Assignee
胡新桥
秦卫强
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 胡新桥, 秦卫强 filed Critical 胡新桥
Priority to CN 02245819 priority Critical patent/CN2575406Y/en
Application granted granted Critical
Publication of CN2575406Y publication Critical patent/CN2575406Y/en

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Abstract

The utility model relates to an expansion plug of an air preheater for eliminating the leakage of a pipe type air preheater. The utility model uses a screw bolt as a basal body, and a screw nut, an elastic washer, a circular lower pressing plate, a cylindrical sealing expansion body, a circular upper pressing plate, a screw protecting sleeve barrel, a circular cover plate plastered with a sealing washer, a spring washer and a screw nut are orderly arranged on the screw bolt. The expansion plug of an air preheater is placed in an air preheater pipe which is needed to be sealed, the screw nut outside the cover plate is tightly screwed, one end of the air preheater pipe can be closed, and the end can be caused to be tight without air leakage.

Description

The air preheater expansion plug
Affiliated technical field
The utility model relates to a kind of air preheater expansion plug that a kind of industrial boiler tubular air preheater is suitable for, especially a kind of adjustable, resistant to elevated temperatures, as to be used to improve efficiency of boiler air preheater expansion plug that expands.
Background technique
The pre-device of tubular type air is to utilize the flue gas heat of boiler tail to come a kind of heat-transfer heat transmission equipment of heated air.Its main function is: reduce temperature of exhaust fume, improve efficiency of boiler; Improve air temperature, improve combustion condition.The flue gas of boiler tail flows through in the pipe of air preheater, heats the air that is positioned at air preheater bobbin carriage lateral flow by pipe, air temperature is brought up to the temperature of boiler design.Because flue gas flows with higher speed in pipe year in year out, the coal ash that carries in the flue gas usually galls the pipe in the air preheater, leaks out.The method that present domestic each power plant obstruction tubular air preheater commonly used leaks out is, with the diameter garden steel bigger slightly than air preheat organ pipe, one end is cut into the grooves at 75 degree angles on lathe, certain length under the car forms the garden cylindricality stopper that an end has certain slope then.Then stopper is placed on the mouth of pipe of the air preheater pipe that leaks out, with electric welding with stopper spot welding or full weld on this tube mouth.This stopper leak stopping has following shortcoming.1, must there be ironworker and qualified welder to cooperate just and can finish the work, complex process, labor strength is big.2, owing to the work under bad environment in the stove, dust stratification is more around the welded tube, and weld bond usually has defectives such as slagging scorification, pore, the pipe that tube wall is thin burn, and can not thoroughly eliminate pipe leaks out; With the superincumbent pipe of stopper spot welding, more never leak out in Han imprecision place, and situation is more serious.Even 3 weld seams are tight, still might pass through worn out abrasionproof short tube, leak out by the crack of the outer refractory concrete of tube wall.
Summary of the invention
For overcome original stopper complex process, labor intensity big, and the welding back shortcoming of leaking easily takes place, the utility model provides a kind of air preheater expansion plug, not only weld with this expansion plug leak stopping without the welder, and labor intensity is little, as long as a common laborer has a spanner, can finish the obstruction in an air preheater hole in tens of seconds.Stifled back good sealing effect does not have air leakage phenomena to take place.
The technical scheme in the invention for solving the technical problem is: with a common double hook bolt as matrix, on the appropriate location of bolt, coiling the is high temperature resistant good sealing material of rubbing property, the heat resisting temperature of material should be at 450 degree between 500 degree, the expander that turns to becomes the garden cylindricality, it is solid to fit between each layer, and the both ends of the surface rule is neat.Diameter is suitable with the internal diameter of the air preheater pipe that will stop up, about the about 70mm of length.Go out the brachycephaly of expander then at bolt, put press table, spring washer successively, a nut is screwed on and award suitable tight power.Go out the long end of expander at bolt, put cover plate, the spring washer of top board, screw protection sleeve, band sealing gasket successively, another nut is screwed on, award suitable tight power, can form an air preheater expansion plug.The working principle of its foundation mainly is vertical compression lateral expansion of general sealing material.When the air preheater expansion plug of making is put into the air preheater tube interior that will stop up, between the last press table of tube inner wall and expansion plug, and between the bolt, form an airtight space; The cover plate of band sealing gasket covers at the air preheater mouth of pipe, elastic washer, nut, and an end of bolt be exposed on the outside.When using spanner turn nut in the outside, owing between bolt and the sealing material, between sealing material and the tube wall, exist friction.Make nut with respect to bolt turn (bolt is owing to the effect of static friction power can not be rotated), move on the bolt, drive to press down to pull simultaneously and move, the axial compression sealing material, make the sealing material lateral expansion, with bigger pressure press to tube wall, on press down pull and bolt between, thereby the circulation passage of hot air is blocked, reach the purpose of sealing.Friction between sealing material and the air preheater tube wall; act on bolt, the lid of band sealing gasket is wrenched on the mouth of pipe that is pressed in air preheater tightly, form the sealing of second road; when leaking appears in the pipeline section of contingency dress screw protection sleeve, then the sealing of second road is worked.Change the screw protection sleeve of different length and can adjust the diverse location of expansion plug in pipe, to satisfy the pipe that stops up different needs.
The beneficial effects of the utility model are, also can carry out the plugging work of air preheater without the welder, and plugging speed is fast, and labor intensity is little.Adopt unique secondary seal, can thoroughly eliminate leaking out that leakage because of the air preheat organ pipe causes,, reduce the purpose of gross coal consumption rate to reach the raising boiler operating efficiency.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is a sectional view of the present utility model.
1. bolts among the figure, 2. nut 1, and 3. spring washer 1,4. presses down and pulls, and 5. expander is pressed on 6. and is pulled, 7. screw protecting jacket, 8. sealing gasket, 9. cover plate, 10. spring washer 2,11. nuts 2.
Embodiment
In the embodiment shown in fig. 1, as matrix, on one side short in reach apart from bolt end face 22mm place, begins usefulness high temperature sealing material coiling expander (5), the about 37mm of diameter, length 77mm with the bolt (1) of M12.Expander requires the two sides concordant, and quality is solid to be good.At the short end of screw thread, suit presses down and pulls (4) successively then, and spring washer (3) screws on nut (2), and adds suitable tight power.At the other end of bolt, cover is loaded onto to press and is pulled (6) successively, screw protection sleeve (7), and the lid that has sealing gasket (8) is pulled (9), and spring washer (10) screws on nut (11), and in addition suitable tight power.Last pressure is pulled (6) and is pressed down and pulls the measure-alike of (4), the about 36.5mm of diameter, and the hole of center drill diameter 12.5, thickness is 3mm.Screw protection sleeve external diameter 17mm, internal diameter 13mm, the about 14mm of length.The about 41mm of external diameter of sealing gasket (8), thickness 2mm.The external diameter that lid is pulled (9) is 41mm, internal diameter 12.5mm, the about 4mm of thickness.Sealing gasket (8) sticks on lid and pulls on (9).
With this air preheater expansion plug that makes, being loaded on the pipe specification is in the air preheater pipe of φ 40 * 1.5, with spanner turn nut (11), can make expander (5) radial expansion, stops up hot-air channel; The pulling force of bolt is pulled (9) by lid sealing gasket is pressed on the mouth of pipe simultaneously, and this pipe is shut, and it is not tightly leaked out.

Claims (3)

1. air preheater expansion plug; be used for the leak stopping of tubular air preheater; it is characterized in that: with a common double hook bolt as matrix; the columniform sealed expansion body of coiling thereon; the upward pressure of respectively overlapping a circle up and down of expander is pulled and is pressed down and pulls; press down to pull by elastic washer and nut and fix, the last pressure pulled circular cover, spring washer and the nut that is set with columnar screw protection sleeve, band gasket seal successively.
2. air preheater expansion plug according to claim 1 is characterized in that: top board and press table are measure-alike, parallel sleeve be contained in the sealed expansion body about; Be pasted with sealing gasket on the cover plate, outside dimension is greater than the external diameter of top board and press table and the air preheater pipe that will stop up, and parallel with press table with top board.
3. air preheater expansion plug according to claim 1 is characterized in that: the screw protection sleeve is housed between cover plate and the top board, between its internal diameter and the bolt certain clearance is arranged, both ends of the surface processing is smooth; Change the screw protection sleeve of different length, can adjust the position of expansion plug in pipe, to adapt to dissimilar plugging requirements.
CN 02245819 2002-08-26 2002-08-26 Lubricating device for concrete convey pump CN2575406Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02245819 CN2575406Y (en) 2002-08-26 2002-08-26 Lubricating device for concrete convey pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 02245819 CN2575406Y (en) 2002-08-26 2002-08-26 Lubricating device for concrete convey pump

Publications (1)

Publication Number Publication Date
CN2575406Y true CN2575406Y (en) 2003-09-24

Family

ID=33717312

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 02245819 CN2575406Y (en) 2002-08-26 2002-08-26 Lubricating device for concrete convey pump

Country Status (1)

Country Link
CN (1) CN2575406Y (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8584864B2 (en) 2010-11-19 2013-11-19 Coldcrete, Inc. Eliminating screens using a perforated wet belt and system and method for cement cooling
CN104197013A (en) * 2014-09-12 2014-12-10 上海电气核电设备有限公司 Small-connecting-pipe mechanical sealing structure and sealing method
CN105156673A (en) * 2015-09-14 2015-12-16 江西洪都航空工业集团有限责任公司 Big aperture blanking cap
US9738562B2 (en) 2013-06-25 2017-08-22 Carboncure Technologies Inc. Methods and compositions for concrete production
US9758437B2 (en) 2013-06-25 2017-09-12 Carboncure Technologies Inc. Apparatus for delivery of carbon dioxide to a concrete mix in a mixer and determining flow rate
US9790131B2 (en) 2013-02-04 2017-10-17 Carboncure Technologies Inc. System and method of applying carbon dioxide during the production of concrete
US10246379B2 (en) 2013-06-25 2019-04-02 Carboncure Technologies Inc. Methods and compositions for concrete production
US10350787B2 (en) 2014-02-18 2019-07-16 Carboncure Technologies Inc. Carbonation of cement mixes
US10570064B2 (en) 2014-04-07 2020-02-25 Carboncure Technologies Inc. Integrated carbon dioxide capture
US10654191B2 (en) 2012-10-25 2020-05-19 Carboncure Technologies Inc. Carbon dioxide treatment of concrete upstream from product mold
US10927042B2 (en) 2013-06-25 2021-02-23 Carboncure Technologies, Inc. Methods and compositions for concrete production

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8584864B2 (en) 2010-11-19 2013-11-19 Coldcrete, Inc. Eliminating screens using a perforated wet belt and system and method for cement cooling
US10654191B2 (en) 2012-10-25 2020-05-19 Carboncure Technologies Inc. Carbon dioxide treatment of concrete upstream from product mold
US10683237B2 (en) 2013-02-04 2020-06-16 Carboncure Technologies Inc. System and method of applying carbon dioxide during the production of concrete
US9790131B2 (en) 2013-02-04 2017-10-17 Carboncure Technologies Inc. System and method of applying carbon dioxide during the production of concrete
US10246379B2 (en) 2013-06-25 2019-04-02 Carboncure Technologies Inc. Methods and compositions for concrete production
US9738562B2 (en) 2013-06-25 2017-08-22 Carboncure Technologies Inc. Methods and compositions for concrete production
US9758437B2 (en) 2013-06-25 2017-09-12 Carboncure Technologies Inc. Apparatus for delivery of carbon dioxide to a concrete mix in a mixer and determining flow rate
US10927042B2 (en) 2013-06-25 2021-02-23 Carboncure Technologies, Inc. Methods and compositions for concrete production
US10350787B2 (en) 2014-02-18 2019-07-16 Carboncure Technologies Inc. Carbonation of cement mixes
US10570064B2 (en) 2014-04-07 2020-02-25 Carboncure Technologies Inc. Integrated carbon dioxide capture
CN104197013A (en) * 2014-09-12 2014-12-10 上海电气核电设备有限公司 Small-connecting-pipe mechanical sealing structure and sealing method
CN105156673A (en) * 2015-09-14 2015-12-16 江西洪都航空工业集团有限责任公司 Big aperture blanking cap

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