CN205470862U - Industrial boiler collection case hand hole device - Google Patents

Industrial boiler collection case hand hole device Download PDF

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Publication number
CN205470862U
CN205470862U CN201620253066.6U CN201620253066U CN205470862U CN 205470862 U CN205470862 U CN 205470862U CN 201620253066 U CN201620253066 U CN 201620253066U CN 205470862 U CN205470862 U CN 205470862U
Authority
CN
China
Prior art keywords
flange
hand hole
hole
maintenance
industrial boiler
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
CN201620253066.6U
Other languages
Chinese (zh)
Inventor
高友智
王宏军
张永旺
刁呈振
胡泽云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xuanhua Iron and Steel Group Co Ltd
Original Assignee
Xuanhua Iron and Steel Group Co Ltd
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 Xuanhua Iron and Steel Group Co Ltd filed Critical Xuanhua Iron and Steel Group Co Ltd
Priority to CN201620253066.6U priority Critical patent/CN205470862U/en
Application granted granted Critical
Publication of CN205470862U publication Critical patent/CN205470862U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides an industrial boiler collection case hand hole device, belongs to industrial boiler equipment technical field, because quick convenient the maintenance. Its technical scheme is: the one end of hand hole joint and the hand hole welded connection on the boiler collection case lateral wall, the other end and lower flange welded connection that the hand hole connects, mounting pad between lower flange and the last flange, circular head welded connection go up flange and lower flange by the flange bolt fastening connection in the flange hole of last flange. The utility model discloses a formula of epitaxy hand hole device, daily just directly perceived, maintenance change degree of difficulty reduction of procuratorial organ, the hand hole device adopts the flange joint structure, maintenance convenient and fast, overhaul at every turn only need to change the gasket can, avoided processes such as cutting and welding, the use of the spare parts that have also significantly reduced, the hand hole is changed into circularly by the ellipse, hand hole circle atress is even, has improved its ability of resisting tired thermal stress. The utility model discloses simple structure, maintenance convenience, safe and reliable, long service life have wide application prospect on industrial boiler.

Description

A kind of Industrial Boiler header hand hole device
Technical field
This utility model relates to the hand hole device of a kind of Industrial Boiler header, belongs to Industrial Boiler equipment technical field.
Background technology
The header of Industrial Boiler system is provided with hand hole device, checks collection chamber interior wall situation, the passage of cleaning grain slag when hand hole device is boiler shutdown, and each header is divided into three sections or four sections by its structure, and every section is respectively mounted a hand hole device.
In Mu Qian, the header common configuration of low-pressure boiler be built-in oval hand hole device, the sealing surface of hand hole device is in header, and hand hole cover is in header.The shortcoming of this hand hole device is: first, and hand hole is with gasket seal, easily causes leakage after operation Intermediate gasket is aging, is damaged by hand hole sealing surface, because sealing surface is repaired highly difficult in header from water or the steam of leakage point ejection at a high speed;Secondly, the many places, hand hole lap welding road that are in operation, repeatedly crackle occurs, welding bead need to be polished during each blowing out, repair welding, not only affect the safe operation of boiler but also add maintenance workload.
High-pressure boiler header does not use the built-in oval hand hole device of gasket seal, and use welded hand hole, need to be opened by hand hole gas cutting when checking, after inspection, use welding to recover, but this mode gas cutting repeatedly, welding, it is desirable to solder technology level is higher and can not be repeated multiple times.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Industrial Boiler header hand hole device, and this hand hole device is easy to open and inspect and change, and can extend hand hole device service life, it is to avoid frequently carry out during maintenance cutting and weld job, reduce maintenance difficulty.
The technical scheme solving above-mentioned technical problem is:
A kind of Industrial Boiler header hand hole device, it is made up of handhole nipple, upper flange, lower flange, pad, flange bolt, circular head, handhole nipple is pipe joint, one end of handhole nipple is welded to connect with the hand hole on boiler header sidewall, the other end of handhole nipple is welded to connect with lower flange, installing pad between lower flange and upper flange, circular head is welded to connect in the flange hole of upper flange, and upper flange and lower flange are connected by flange bolt fastening.
Above-mentioned Industrial Boiler header hand hole device, the hand hole on described header sidewall is circular port, and the internal diameter of handhole nipple is more than the diameter of hand hole circular hole, and handhole nipple inner wall surrounding is connected with header sidewall weld at the circular port periphery of hand hole, the excircle of handhole nipple.
The beneficial effects of the utility model are:
Original internal placed man aperture apparatus is changed into extensional mode hand hole device by this utility model, convenient directly perceived, the maintenance replacing difficulty reduction of daily spot check;Hand hole device uses flange connection, and dimension inspection is convenient and swift, every time maintenance only need to change pad, it is to avoid the operation such as cutting and welding, also greatly reduces the use of spare part;Hand hole is changed into circle, hand hole circle uniform force by ellipse, improves the ability of its resisting fatigue thermal stress.
This utility model simple in construction, maintenance are convenient, safe and reliable, have that cost of manufacture is low, service life is long, and the feature that usability is strong has broad application prospects on Industrial Boiler.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, labelling is as follows: handhole nipple 1, lower flange 2, pad 3, flange bolt 4, upper flange 5, circular head 6, header sidewall 7, hand hole 8.
Detailed description of the invention
This utility model is made up of handhole nipple 1, upper flange 5, lower flange 2, pad 3, flange bolt 4, circular head 6.
Showing in figure, this utility model is changed the hand hole 8 of header sidewall 7 into circle by ellipse, and it is φ 107 circular hole that former header 102*88 ellipse hand hole expands, and hand hole circle uniform force improves the ability of its resisting fatigue thermal stress.
Showing in figure, handhole nipple 1 is pipe joint, and one end of handhole nipple 1 is welded to connect with the hand hole 8 on boiler header sidewall 7.The internal diameter of handhole nipple 1 is more than the diameter of hand hole 8 circular hole, and handhole nipple 1 inner wall surrounding is welded to connect with header sidewall 7 at the circular port periphery of hand hole 8, the excircle of handhole nipple 1.
Showing in figure, the other end of handhole nipple 1 is welded to connect with lower flange 2, installs pad 3 between lower flange 2 and upper flange 5, and pad 3 is Graphite pad.Circular head 6 is welded to connect in the flange hole of upper flange 5, and upper flange 5 and lower flange 2 are fastenedly connected by flange bolt 4, and flange bolt 4 is M30*8 bolt.
When maintenance, only need to unclamp flange bolt 4, change pad 3, it is to avoid the operation such as cutting and welding, simplify maintenance process flow process, decrease maintenance time, improve maintenance efficiency.
Installation process of the present utility model is as follows:
First, excise the elliptical tube joint of hand hole in former header, oxygen-acetylene torch cutting or plasma cutting can be used;
Secondly, centered by the center of former elliptical aperture, mowing becomes the circular hand hole 8 of Φ 107-, the circular hand hole 8 of Φ 107 cuts out the double V-groove of 45 °, does not stay root face;Metallic luster is seen in the range of polishing groove face and groove surrounding 20mm;
Finally, being assembled with corresponding circular hand hole 8 by handhole nipple 1, handhole nipple is Φ 133*13 pipe joint, should ensure that surrounding gap uniformity, and symmetrical spot welding four point during assembling, and welding uses manual argon arc welding;Postwelding carries out visual examination, and carries out magnetic powder (or coloring) inspection, and the girth joint of end cap uses x-ray inspection, carries out Hydrostatic test.

Claims (2)

1. an Industrial Boiler header hand hole device, it is characterized in that: it is by handhole nipple (1), upper flange (5), lower flange (2), pad (3), flange bolt (4), circular head (6) forms, handhole nipple (1) is pipe joint, one end of handhole nipple (1) is welded to connect with the hand hole (8) on boiler header sidewall (7), the other end of handhole nipple (1) is welded to connect with lower flange (2), pad (3) is installed between lower flange (2) and upper flange (5), circular head (6) is welded to connect in the flange hole of upper flange (5), upper flange (5) and lower flange (2) are fastenedly connected by flange bolt (4).
Industrial Boiler header hand hole device the most according to claim 1, it is characterized in that: the hand hole (8) on described header sidewall (7) is circular port, the internal diameter of handhole nipple (1) is more than the diameter of hand hole (8) circular hole, handhole nipple (1) inner wall surrounding is welded to connect with header sidewall (7) at the circular port periphery of hand hole (8), the excircle of handhole nipple (1).
CN201620253066.6U 2016-03-30 2016-03-30 Industrial boiler collection case hand hole device Expired - Fee Related CN205470862U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620253066.6U CN205470862U (en) 2016-03-30 2016-03-30 Industrial boiler collection case hand hole device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620253066.6U CN205470862U (en) 2016-03-30 2016-03-30 Industrial boiler collection case hand hole device

Publications (1)

Publication Number Publication Date
CN205470862U true CN205470862U (en) 2016-08-17

Family

ID=56647600

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620253066.6U Expired - Fee Related CN205470862U (en) 2016-03-30 2016-03-30 Industrial boiler collection case hand hole device

Country Status (1)

Country Link
CN (1) CN205470862U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109323067A (en) * 2018-09-14 2019-02-12 哈尔滨锅炉厂有限责任公司 Connecting flange hydraulic cover structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109323067A (en) * 2018-09-14 2019-02-12 哈尔滨锅炉厂有限责任公司 Connecting flange hydraulic cover structure

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Date Code Title Description
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: 20160817

Termination date: 20180330