CN205298942U - Combined casing cap - Google Patents

Combined casing cap Download PDF

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Publication number
CN205298942U
CN205298942U CN201620076909.XU CN201620076909U CN205298942U CN 205298942 U CN205298942 U CN 205298942U CN 201620076909 U CN201620076909 U CN 201620076909U CN 205298942 U CN205298942 U CN 205298942U
Authority
CN
China
Prior art keywords
expansion sleeve
awl
stifled
thread
spring pad
Prior art date
Application number
CN201620076909.XU
Other languages
Chinese (zh)
Inventor
彭元波
杨尚峰
张海勇
Original Assignee
兖矿鲁南化肥厂
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 兖矿鲁南化肥厂 filed Critical 兖矿鲁南化肥厂
Priority to CN201620076909.XU priority Critical patent/CN205298942U/en
Application granted granted Critical
Publication of CN205298942U publication Critical patent/CN205298942U/en

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Abstract

The utility model relates to a combined casing cap. Including inflation cover, the inside of inflation cover has a taper bolt, the thread end protrusion of taper bolt in the inflation cover, flat shim and spring pad overlap in the thread end, and the nut pass through screw thread adjutant flat shim and spring pad fasten in the inflation is sheathe in. The utility model discloses a design brand -new structure, make it be adapted to welding, expanded joint, expanded and welded tube joint type tube sheet awl is stifled, can enough ensure the stifled effect of the tubulation awl reliability stifled with the awl, can avoid the stifled stress defect of bringing of welding awl again.

Description

A kind of combined pipe plug
Technical field
The utility model relates to heat exchange equipment sealing correlative technology field, specifically, relates to a kind of combined pipe plug.
Background technology
At present, in industrial production, shell and tube heat exchanger is most widely used a kind of interchanger, due to compact equipment, firm, and multiple material can be selected to manufacture, therefore adaptability is relatively strong, is especially used widely in large-scale plant and high temperature, high pressure. Due to the reason such as design of heat exchanger, manufacturing defect and environment for use be severe, tube leaking is very common in Chemical Manufacture, complete assembly is often caused to stop, interchanger once occur fault, not only affect the economy of production, also usually directly threaten the safe operation of main frame or other equipment, even cause serious equipment damage accident.
Owing to interchanger integral replacing economy is unreasonable, major part all adopts cone blocking seepage tubulation or welding process again. The tapered plug that the conventional heat exchanger tube cone blocking method of this kind of method mainly adopts hardness higher, the corresponding tubulation mouth of pipe is squeezed into by external force, likely cause when external force is excessive neighbouring panel weld stress excessive, form crackle and make it that new leakage occurs, external force is crossed a hour equipment running process tapered plug and is easily come off, do not reach plugging effect, and tapered plug is unfavorable for equipment steady running with the medium system of entering.
Adopt cone blocking leak tubulation again welding process mostly be site operation, vertical position welding, overhead welding operational difficulty big, very easily cause tube sheet local heating during stainless heat exchanger welding plug, shrink when weld metal cools and be easy to make surrounding barrel and tube sheet produce stress deformation ftracture by thermal stretch.
Practical novel content
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, it is provided that a kind of combined pipe plug. The utility model is by the brand-new structure of design so that it is is adapted to welding, swollen connects, swollen weldering type tube sheet cone blocking, can either guarantee the reliability of tubulation cone blocking effect and cone blocking, can avoid again welding the stress defect that cone blocking is brought.
In order to reach above-mentioned purpose, the utility model adopts following technical scheme:
A kind of combined pipe plug, comprises expansion sleeve, and the inside of expansion sleeve has tapered bolt, and the thread end of tapered bolt protrudes from described expansion sleeve;
Flat gasket and spring pad are placed on described thread end, and flat gasket and spring pad are anchored on described expansion sleeve by nut by screw thread pair.
Preferably, described expansion sleeve is four fluorine materials.
Preferably, the inside of described expansion sleeve has the tapered hole of 10:1.
Preferably, the tapering of the conical ends of described tapered bolt is 10:1.
Preferably, described nut is hex-nut.
Preferably, the other end of described tapered bolt also protrudes from described expansion sleeve.
The beneficial effects of the utility model are:
(1) cone blocking is reliable, this pipe plug selects four fluorine materials of band tapering as expansion sleeve, good stopping property can be kept with tubulation under-100-250 DEG C of environment, the tapering of 10:1 considerably increases the contact area inside expansion sleeve and tubulation guarantee expansion effect simultaneously, improve frictional force, this pipe plug is not easily deviate from, ensures that cone blocking is reliable.
(2) use negative impact little, owing to four fluorine material hardness are much smaller than heat exchanger tube hardness, newly-increased stress defect can not be brought to heat exchanger tube sheet when this pipe plug uses, avoid neighbouring panel weld crackle.
(3) structure is simple, cost is low, easy to use, this pipe plug composition parts can be mass-produced according to various caliber specification, pad, releasing spring pad selection standard part, only with spanner, this pipe plug need to be anchored on nozzle position during use, it is not necessary to welding, the tool material such as bonding.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1, expansion sleeve, 2, tapered bolt, 3, flat gasket, 4, spring pad, 5, hex-nut.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
Embodiment: a kind of combined pipe plug, its structure as shown in Figure 1, comprises expansion sleeve 1, tapered bolt 2, flat gasket 3, spring pad 4 and hex-nut 5.
It is inner that tapered bolt 2 is inserted into expansion sleeve 1, and conical ends and thread end are all exposed to described expansion sleeve 1. Thread end is installed smooth cover successively from the inside to surface and has flat gasket 3, spring pad 4 and hex-nut 5.
Wherein, expansion sleeve 1 adopts four fluorine materials of corrosion-and high-temp-resistant, length is generally not less than 3 times of cone blocking tubulation internal diameter, this expansion sleeve 1 cylindrical is with the tapering of 10:1, large head external diameter is 1.1 times of tubulation internal diameter, is applied to tubulation cone blocking under this tapering, it is possible to make to fit tightly with tubulation inwall outside expansion sleeve, increase contact area and improve frictional force, ensure that sealing is reliable and stable.
Be the taper hole of 10:1 inside expansion sleeve 1, with inner circle with the use of be band cone head tapered bolt 2, this another side of bolt one headband silk is 10:1 cone, stainless steel.
Expansion sleeve 1 and tapered bolt 2 with the use of time, expansion sleeve 1 does not move, conical bolt 2 moves axially along with the fastening of hex-nut 5, the cone head end of such bolt just rises out by expansion sleeve 1, it is made to fill up whole tubulation, the frictional force formed prevents deviating from of tapered plug, thus reaches tubulation cone blocking effect.
Flat gasket 3 and spring pad 4 it is furnished with, it is possible to the bolt looseness giving equipment temperature distortion and cause compensates, thus reaches the reliable cone blocking effect of tubulation inside hex-nut 5.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are enable to realize or use the utility model. To be apparent for those skilled in the art to the multiple amendment of embodiment, General Principle as defined herein can when not departing from spirit or scope of the present utility model, realize in other embodiments, it is not described in detail the part presented with partial enlargement, for prior art, do not repeat at this. Therefore, the utility model can not be limited in these embodiments shown in this article, but be met the widest scope consistent with principle disclosed herein and feature.

Claims (5)

1. a combined pipe plug, it is characterised in that, comprise expansion sleeve, the inside of expansion sleeve has tapered bolt, and the thread end of tapered bolt protrudes from described expansion sleeve;
Flat gasket and spring pad are placed on described thread end, and flat gasket and spring pad are anchored on described expansion sleeve by nut by screw thread pair.
2. combined pipe plug according to claim 1, it is characterised in that, described expansion sleeve is four fluorine materials.
3. combined pipe plug according to claim 1, it is characterised in that, the inside of described expansion sleeve has the tapered hole of 10:1
4. combined pipe plug according to claim 3, it is characterised in that, the tapering of the conical ends of described tapered bolt is 10:1.
5. combined pipe plug according to claim 1, it is characterised in that, described nut is hex-nut.
CN201620076909.XU 2016-01-26 2016-01-26 Combined casing cap CN205298942U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620076909.XU CN205298942U (en) 2016-01-26 2016-01-26 Combined casing cap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620076909.XU CN205298942U (en) 2016-01-26 2016-01-26 Combined casing cap

Publications (1)

Publication Number Publication Date
CN205298942U true CN205298942U (en) 2016-06-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620076909.XU CN205298942U (en) 2016-01-26 2016-01-26 Combined casing cap

Country Status (1)

Country Link
CN (1) CN205298942U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106119511A (en) * 2016-08-31 2016-11-16 马鞍山市恒泰重工机械有限公司 9Cr2Mo smoothing roll heat treatment method based on aerofluxus quenching technical
CN106119510A (en) * 2016-08-31 2016-11-16 马鞍山市恒泰重工机械有限公司 A kind of smoothing roll quenching process
CN108167570A (en) * 2017-12-25 2018-06-15 武汉静磁栅机电制造有限公司 A kind of pipe sealing device
CN109238570A (en) * 2018-10-16 2019-01-18 安徽江淮汽车集团股份有限公司 A kind of opposite plugging mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106119511A (en) * 2016-08-31 2016-11-16 马鞍山市恒泰重工机械有限公司 9Cr2Mo smoothing roll heat treatment method based on aerofluxus quenching technical
CN106119510A (en) * 2016-08-31 2016-11-16 马鞍山市恒泰重工机械有限公司 A kind of smoothing roll quenching process
CN106119511B (en) * 2016-08-31 2017-10-13 马鞍山市恒泰重工机械有限公司 9Cr2Mo smoothing roll heat treatment methods based on exhaust quenching technical
CN108167570A (en) * 2017-12-25 2018-06-15 武汉静磁栅机电制造有限公司 A kind of pipe sealing device
CN109238570A (en) * 2018-10-16 2019-01-18 安徽江淮汽车集团股份有限公司 A kind of opposite plugging mechanism

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160608

Termination date: 20170126

CF01 Termination of patent right due to non-payment of annual fee