CN201124321Y - Grinder for high pressure pipe mouth sealing face - Google Patents

Grinder for high pressure pipe mouth sealing face Download PDF

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Publication number
CN201124321Y
CN201124321Y CNU2007201176514U CN200720117651U CN201124321Y CN 201124321 Y CN201124321 Y CN 201124321Y CN U2007201176514 U CNU2007201176514 U CN U2007201176514U CN 200720117651 U CN200720117651 U CN 200720117651U CN 201124321 Y CN201124321 Y CN 201124321Y
Authority
CN
China
Prior art keywords
pipe
ring
sleeve
mouth
mold
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CNU2007201176514U
Other languages
Chinese (zh)
Inventor
贾红波
张箭飞
张晓东
李嘉平
李彩霞
窦雪峰
张松
Original Assignee
李冬梅
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 李冬梅 filed Critical 李冬梅
Priority to CNU2007201176514U priority Critical patent/CN201124321Y/en
Application granted granted Critical
Publication of CN201124321Y publication Critical patent/CN201124321Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a high-pressure pipe seal surface lapping machine which belongs to rotary equipment for lapping seal surface of high-pressure pipe. The lapping machine comprises a sleeve, a center positioning wedge and a die body. The sleeve has an inner thread at the small pipe mouth end, and the inner thread is connected with the end thread buckle of a workpiece. A stopper ring, a bearing ring, a stopper ring and a press ring are respectively loaded in the large pipe mouth of the sleeve, and the cap of a screw embedded in the sleeve wall is pressed on the press ring. The outer circle of the center positioning wedge consistently embedded into the inner circle of the workpiece; the outer circle of the die body is consistently embedded into the inner circle of the bearing ring; a lapping head in front of the die body butts against positioning wedge and the pipe mouth of the workpiece; and a connection head is embedded into the axis center at the tail end of the die body. A locking screw is successively inserted into the center positioning wedge and the die body along the axis and is screwed in and fixed with the inner screw base of the connection head; and the connection head has a groove with inner edges in the center of the tail end, and a mandril is wedged in the groove. The lapping machine has the advantages of prolonged service life of pipe flange, saved cost for flange replacement, ensured lapping accuracy, less time consumption, less error and low labor intensity.

Description

High pressure mouth of pipe sealing surface grinder
Technical field
The utility model belongs to the rotating machinery that high pressure mouth of pipe sealing surface grinds, and particularly relates to a kind of at high pressure or the designed high pressure mouth of pipe sealing surface grinder of ultra-high pressure pipeline thread connection flange mouth of pipe defect repair.
Background technology
It mainly is that screwed flange connects that high pressure or ultra-high pressure pipeline connect, and particularly flange mouth of pipe sealing surface defect repair is the bottleneck problem of chemical field always.Traditional underhand polish is mainly rotated for axial power of mold simultaneously slowly with hand and is ground mold, cause sealing surface unbalance stress or power to departing from easily, brings artificial error, thereby the extend labour time, has increased labour intensity.Moreover tradition is ground location, the inner footpath of mold, the mold body can radially rock, many caliber circularity are not high, bore and sealing surface disalignment, cause the mold body can not be circumferentially grinding-in face uniformly, often sealing surface is ground step, circumferentially be uneven, precision is low, causes high pressure or super-pressure flange to scrap.Particularly to grind the probability of step bigger for the flange that makes progress of flange sealing surface out of plumb, circumferentially is uneven and influenced the service life of pipe flange thereby repeatedly grind the back sealing surface.The more important thing is that for the high pressure U type elbow mouth of pipe because of its special process structure, this grinds tradition and has proposed challenge.
Summary of the invention
The utility model is intended to overcome the deficiencies in the prior art, and the final operation (mouth of pipe screw thread is coaxial with the ferrule face) of processing with pressure piping is a starting point, and the high pressure mouth of pipe sealing surface grinder of a kind of screw thread location is provided.
High pressure mouth of pipe sealing surface grinder of the present utility model is made of sleeve, centralized positioning wedge, mold body.At the little nose end of sleeve the pipe end screwed connection of internal thread and workpiece is arranged, the nut that is respectively charged into the screw in ring washer, race ring, ring washer, pressure ring, the embedding sleeve wall in the big mouth of pipe of sleeve is pressed on the pressure ring.The match grinding head of embedding, its front end and the mouth of pipe of locating wedge and workpiece of the circle wedging that matches in the cylindrical of centralized positioning wedge and the pipe of workpiece, the interior circle of the cylindrical of mold body and race ring offsets, at the tail end axle center of mold body embedding connector.The tie down screw axis inserts the centralized positioning wedge in succession and is tightened mutually with the mold body and with the interior screw socket of connector, and the tail end center of connector is the inside corner groove, wherein wedges push rod.
As further improvement of the utility model, apposition abrasive sand on the end face of grinding head.
As further improvement of the utility model, at the recessed sealing ring that is embedded with of the race ring side of ring washer.
The effect of above-mentioned each parts is as follows: sleeve is provided with internal thread, itself and high pressure mouth of pipe threaded engagement are played make mold body and the coaxial effect of workpiece (the high pressure mouth of pipe) sealing surface, be drilled with the hole of 6 ∮ 6 at sleeve, be used to get rid of and grind the sand grains that iron filings that the mouth of pipe falls down and emery cloth come off.Debug heart race ring in the sleeve and guarantee that mold body and mouth of pipe screw thread, ferrule face are coaxial, and can micro-aligning and rub when reducing the rotation of mold body; Sealing ring, ring washer prevent that dirt from entering race ring; Baffle ring is pressed in soket head cap screw and plays the bearing positioning action on the sleeve; Emery cloth is clipped between centralized positioning wedge and mold body and by soket head cap screw, connector, packing ring two parts is clamped; Electric hand drill is clipped on the push rod and inserts connector and drive the centralized positioning wedge that accompanies emery cloth and rotate with the mold body high pressure mouth of pipe is ground reparation.
High pressure mouth of pipe sealing surface of the present utility model grinds facility and uses the overcoat internal thread to be connected locate mode with high pressure or ultra-high pressure pipeline external screw thread, guaranteed that the mold body is coaxial with high pressure or ultra-high pressure pipeline sealing surface, can not radially rock, can only circumferentially rotate grinding-in face uniformly, avoided step, prolonged pipe flange service life, saved the fund of changing flange, guaranteed the precision of grinding and consuming time less, error is little, labour intensity is little.
Description of drawings
Figure of description is the structural representation of high pressure mouth of pipe sealing surface grinder of the present utility model.
The specific embodiment
High pressure mouth of pipe sealing surface grinder of the present utility model is made of sleeve 1, centralized positioning wedge 2, mold body 3.The pipe end screwed connection of internal thread and workpiece 5 is arranged at the little nose end of sleeve 1, the ring washer 6 of packing in the big mouth of pipe of sleeve 1, race ring 7, ring washer 8, pressure ring 9, the nut that embeds the screw 10 in sleeve 1 wall is pressed on the pressure ring 9, the round wedging that matches in the pipe of the cylindrical of centralized positioning wedge 2 and workpiece 5, the embedding that matches of the interior circle of the cylindrical of mold body 3 and race ring 7, grinding head 11 before it offsets with the mouth of pipe of locating wedge 3 and workpiece 5, tail end axle center at mold body 3 embeds connector 12, tie down screw 13 axis insert centralized positioning wedge 2 and mold body 3 in succession, and be tightened mutually with the interior screw socket of connector 12, the tail end center of connector 12 is the inside corner groove, wherein wedge push rod 14.Wherein apposition abrasive sand on the end face of grinding head 11.The recessed sealing ring 15 that is embedded with in race ring 7 sides of ring washer 6,8.
Its using method is:
1, centralized positioning wedge and mold body are extracted out from race ring, unclamped hex screw and connector centralized positioning wedge and mold body are disintegrated, folder is gone up emery cloth betwixt;
2, with in centralized positioning wedge and the assembling of mold body, that hex screw and connector is fastening good;
3, sleeve and assembly thereof are screwed on the high pressure mouth of pipe screw thread;
4, insert centralized positioning wedge and mold body;
5, electric hand drill is clamped push rod, opens the electric drill switch and emery cloth is well contacted for simultaneously an axial force with the mouth of pipe.In the process of lapping, will flow out the hole of emery cloth sand grains from sleeve that have iron filings and come off;
6, grind certain hour,, stop the replaceable emery cloth of hand drill (repeating 1,2 operating procedures) when sensation emery cloth sand grains comes off seriously.The emery cloth replacement cycle is relevant with the axial force size that applies, and axial force is big, and emery cloth comes off soon, and the replacement cycle is short.
7, repeat aforesaid operations, repair fully up to the ferrule planar defect, it is qualified until the ferrule face to change the crosus cloth smooth grinding then.

Claims (3)

1, high pressure mouth of pipe sealing surface grinder is by sleeve (1), centralized positioning wedge (2), mold body (3) constitutes, the little nose end that it is characterized in that sleeve (1) has the pipe end screwed connection of internal thread and workpiece (5), the ring washer (6) of in the big mouth of pipe of sleeve (1), packing into, race ring (7), ring washer (8), pressure ring (9), the nut that embeds the screw (10) in sleeve (1) wall is pressed on the pressure ring (9), the round wedging that matches in the pipe of the cylindrical of centralized positioning wedge (2) and workpiece (5), the embedding that matches of the interior circle of the cylindrical of mold body (3) and race ring (7), the grinding head of its front end (11) offsets with the mouth of pipe of locating wedge (3) and workpiece (5), tail end axle center at mold body (3) embeds connector (12), tie down screw (13) axis inserts centralized positioning wedge (2) and mold body (3) in succession, and be tightened mutually with the interior screw socket of connector (12), the tail end center of connector (12) is the inside corner groove, wherein wedge push rod (14).
2, high pressure mouth of pipe sealing surface grinder as claimed in claim 1 is characterized in that apposition abrasive sand on the end face of grinding head (11).
3, high pressure mouth of pipe sealing surface grinder as claimed in claim 1 is characterized in that the recessed sealing ring (15) that is embedded with in race ring (7) side of ring washer (6), (8).
CNU2007201176514U 2007-12-12 2007-12-12 Grinder for high pressure pipe mouth sealing face Expired - Fee Related CN201124321Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201176514U CN201124321Y (en) 2007-12-12 2007-12-12 Grinder for high pressure pipe mouth sealing face

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201176514U CN201124321Y (en) 2007-12-12 2007-12-12 Grinder for high pressure pipe mouth sealing face

Publications (1)

Publication Number Publication Date
CN201124321Y true CN201124321Y (en) 2008-10-01

Family

ID=39997737

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201176514U Expired - Fee Related CN201124321Y (en) 2007-12-12 2007-12-12 Grinder for high pressure pipe mouth sealing face

Country Status (1)

Country Link
CN (1) CN201124321Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101407034B (en) * 2008-11-26 2010-06-09 滕州市三合机械有限公司 Pipes end-face grinder
CN106737123A (en) * 2016-11-25 2017-05-31 中航动力股份有限公司 A kind of aero-engine exterior line conical surface seal grinds prosthetic device and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101407034B (en) * 2008-11-26 2010-06-09 滕州市三合机械有限公司 Pipes end-face grinder
CN106737123A (en) * 2016-11-25 2017-05-31 中航动力股份有限公司 A kind of aero-engine exterior line conical surface seal grinds prosthetic device and method

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee
C19 Lapse of patent right due to non-payment of the annual fee