CN103776594B - A kind of device and method detecting single boiler convection sealing of tube quality - Google Patents
A kind of device and method detecting single boiler convection sealing of tube quality Download PDFInfo
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- CN103776594B CN103776594B CN201410078047.XA CN201410078047A CN103776594B CN 103776594 B CN103776594 B CN 103776594B CN 201410078047 A CN201410078047 A CN 201410078047A CN 103776594 B CN103776594 B CN 103776594B
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Abstract
The present invention proposes a kind of device detecting single boiler convection sealing of tube quality, including jack, also includes pressure fluid transmitter, supporting steel pipe and curved plate；Described pressure fluid transmitter one end has concave shaped cavity, and the end face at concave shaped cavity outer rim described in this end is consistent with drum internal chamber wall curvature and can fit on described internal chamber wall, and this end face is provided with the groove being mounted with sealing ring；Having through transfer passage, described transfer passage one end to be positioned at the pipe port in convection tube to be measured when being and use inside described pressure fluid transmitter, the other end is connection mouth；The body of described pipe port bottom is provided with locating ring；Invention also provides a kind of method detecting single boiler convection sealing of tube quality；The present invention has the advantage such as handling ease, safe and reliable, easy accessibility, in use without changing accessory, can be widely applied to the single water pressure test after the boiler convection sealing of tube of all size in boiler plant installation process.
Description
Technical field
The present invention relates to energy conversion field, particularly to a kind of dress detecting single boiler convection sealing of tube quality
Put and method.
Background technology
In the in-site installation of boiler, the comb formed with many steel pipes (convection tube) is needed to be connected by two drums, often
The two ends of root convection tube constitute be tightly connected with corresponding connection mouth welding reserved on two drums to be connected respectively, welding
(see figure 1) is implemented at weld bond (15) place.
In boiler manfacturing installation process, need to solve the difficult problem that boiler convection sealing of tube quality confirms in time.Ratio
Such as the convection tube No. 20 seamless steel pipe manufactures of φ 51 × 3.5 of certain engineering construction, it is longitudinally arranged 36 rows, lateral arrangement along drum
16 rows, pipe transverse pitch 74mm, longitudinal pitch 98mm, the long 80mm of drum tube joint.Vertically and horizontally arrange closely due to comb, often
Road weld bond there are about the vision blind spot of about 15mm, and welding quality is difficult to ensure that, simultaneously because what existing Dynamic Non-Destruction Measurement existed
Deficiency, inconvenience detects in time, and there is the possible problem of dtmf distortion DTMF of testing result；During as utilized ray Non-Destructive Testing, need to execute
Workman person withdraws scene, and testing result is delayed, is greatly prolonged the construction period and reduces efficiency of construction, and testing cost is bigger.As
Confirm welding quality not in time, until problems of welded quality occurring during boiler Hydrostatic test, particular on relatively centre position
Soldered quality problems occur, then convection tube good for multiple rows of for outside welding must be cut off, could be to defective in quality
Weld seam is reprocessed, and causes later second time welding quality to be more difficult to ensure.
Through retrieval, disclose one at Chinese patent application prospectus CN202580378U and " try for pipeline pressure
The internal-expansion type sealing and connecting device tested ", but it is generally used for internal diameter and must corresponding one advise less than DN50 pipeline, each internal diameter
The detection device of lattice, there is multiple accessory being easily damaged in this device simultaneously, in use needs to change.
Summary of the invention
Based on the deficiencies in the prior art, one of the problem to be solved in the present invention is to provide the single boiler convection pipe of a kind of detection
The device of welding quality.
The two of the problem to be solved in the present invention are to provide a kind of method detecting single boiler convection sealing of tube quality.
For solving one of above-mentioned technical problem, the present invention provides a kind of dress detecting single boiler convection sealing of tube quality
Put, including jack, also include pressure fluid transmitter, supporting steel pipe and curved plate；Described pressure fluid transmitter one end
Having concave shaped cavity, the end face at concave shaped cavity outer rim described in this end is consistent with drum internal chamber wall curvature and can fit in described internal chamber wall
On, and this end face is provided with the groove being mounted with sealing ring；Through transfer passage, institute is had inside described pressure fluid transmitter
Stating when transfer passage one end is and uses and be positioned at the pipe port in convection tube to be measured, the other end is connection mouth；Described pipe port bottom
Body be provided with locating ring；During use, the telescopic end of described jack contacts with the other end of described pressure fluid transmitter；
The other end of the supporting steel pipe that one end is welded with curved plate is with the base contacts of jack.
As the improvement on the one hand of a kind of device detecting single boiler convection sealing of tube quality of the present invention: described detection
Device also includes the coupling being placed between jack and supporting steel pipe when using, and this coupling has steel plate, described steel plate one side
Being fixed with the first spacing collar for putting into jack telescopic end, described steel plate another side is fixed with for putting into pressure fluid biography
Second spacing collar of the defeated device other end.This coupling ensure that the position of jack and pressure fluid transmitter is relatively fixed,
Preferably to transmit pressure.
For solving the two of the problems referred to above, the present invention provides a kind of method detecting single boiler convection sealing of tube quality, its
Comprise the following steps:
A convection tube to be measured that () welds with steamdrum and water drum respectively for two ends, in this position, convection tube two ends to be measured
Described detection device it is respectively mounted in the steamdrum put and water drum；Mounting means is: supporting steel pipe, jack, pressure fluid
Transmitter is sequentially connected with, or supporting steel pipe, coupling, jack, pressure fluid transmitter are sequentially connected with, pressure fluid transmitter
End face at concave shaped cavity outer rim fits on drum internal chamber wall, and described pipe port is positioned in convection tube to be measured and locating ring is also positioned at
Convection tube to be measured make pressure fluid transmitter can not radially wobble relative to convection tube to be measured；Supporting steel pipe one end
Curved plate is placed on the drum inwall of convection tube offside to be measured；
B () operation jack, forms compressing to described pressure fluid transmitter, makes the pressure fluid transmitter of sealing ring
Port is in close contact with drum internal chamber wall, and formation is tightly connected；
C the connection mouth of the detection device in one of them drum is closed by (), will detect the company of device in another drum
Connect nozzle to be connected with high pressure water connector；In convection tube to be measured, inject water under high pressure, keep inner pipe water pressure no less than five minutes；
D () is observed whether convection tube welding position to be measured has drainage, is i.e. realized the welding quality to convection tube to be measured
Detection.
Compared with prior art, the present invention has the advantage such as handling ease, safe and reliable, easy accessibility, is using
During without changing accessory, after can be widely applied to the boiler convection sealing of tube of all size in boiler plant installation process
The single water pressure test.
Describing the present invention below in conjunction with the accompanying drawings in detail, it, as the part of this specification, illustrates this by embodiment
The principle of invention, other aspects of the present invention, feature and advantage thereof will be become apparent from by this detailed description.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of pressure fluid transmitter in the present invention.
In Fig. 1-2, the corresponding relation of reference is:
1-pipe port, 2-locating ring, 3-sealing ring,
4-pressure fluid transmitter, 5-transfer passage, 6-connection mouth,
7-convection tube to be measured,
8-drum, 9-the second spacing collar, 10-steel plate,
11-the first spacing collar, 12-jack, 13-supporting steel pipe,
14-curved plate, 15-weld bond.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Combination mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Below in conjunction with embodiment, the present invention is described further.It is that one of the present invention detects single boiler shown in Fig. 1
The structural representation of the device of convection tube welding quality.For brevity, figure only illustrates substructure of this detection device, save
Omit superstructure symmetrical therewith.Fig. 2 is the structural representation of pressure fluid transmitter 4.
As depicted in figs. 1 and 2, a kind of device detecting single boiler convection sealing of tube quality, including jack 12, also wraps
Include pressure fluid transmitter 4, supporting steel pipe 13 and curved plate 14；Described pressure fluid transmitter 4 one end has concave shaped cavity, should
Hold the end face at described concave shaped cavity outer rim consistent with drum 8 internal chamber wall curvature and can fit on described internal chamber wall, and this end
Face is provided with the groove being mounted with sealing ring 3；Described pressure fluid transmitter 4 is internal through transfer passage 5, and described conveying is led to
One end, road 5 is positioned at the pipe port 1 in convection tube 7 to be measured when being and use, and the other end is connection mouth 6；The pipe of described pipe port 1 bottom
Body is provided with locating ring 2；During use, the telescopic end of described jack 12 contacts with the other end of described pressure fluid transmitter 4；
The other end of the supporting steel pipe 13 that one end is welded with curved plate 14 is with the base contacts of jack 12.
Above-mentioned detection device also includes when using, be placed in the coupling between jack 12 and supporting steel pipe 13, this connection
Device has steel plate 10, described steel plate 10 one side to be fixed with the first spacing collar 11 for putting into jack 12 telescopic end, described steel plate
10 another sides are fixed with the second spacing collar 9 for putting into pressure fluid transmitter 4 other end.
Present invention simultaneously provides a kind of method using said apparatus to detect single boiler convection sealing of tube quality, it includes
Following steps:
A convection tube to be measured 7 that () welds with steamdrum and water drum respectively for two ends, at these convection tube 7 two ends to be measured
Described detection device it is respectively mounted in the steamdrum of position and water drum；Mounting means is: supporting steel pipe 13, jack 12, pressure
Power fluid transmitter 4 is sequentially connected with, or supporting steel pipe 13, coupling, jack 12, pressure fluid transmitter 4 are sequentially connected with, pressure
End face at power fluid transmitter 4 concave shaped cavity outer rim fits on drum 8 internal chamber wall, and described pipe port 1 is positioned at convection tube 7 to be measured
In and locating ring 2 be also positioned at and convection tube 7 to be measured make pressure fluid transmitter 4, relative to convection tube 7 to be measured, footpath can not occur
To swing；The curved plate 14 of supporting steel pipe 13 one end is placed on drum 8 inwall of convection tube 7 offside to be measured；
B () operation jack 12, forms compressing to described pressure fluid transmitter 4, makes the pressure fluid of sealing ring 3 pass
Defeated device 4 port is in close contact with drum 8 internal chamber wall, and formation is tightly connected；
C the connection mouth 6 of the detection device in one of them drum is closed by (), will detect the company of device in another drum
Connect nozzle 6 to be connected with high pressure water connector；In convection tube 7 to be measured, inject water under high pressure, keep inner pipe water pressure no less than five minutes (pressure
For drum operating pressure 1.25 times)；Along with the rising of pressure in water pressure test convection tube to be measured 7, suitably regulation jack 12,
The counteracted by pressure making jack 12 produce carries out several tons of pressure of formation during pressure test, and sealing ring 3 produces bigger bullet
Property expansion and with drum 8 inwall be in close contact, it is ensured that seal intact to meet the closure requirement of the water pressure test；
D () is observed whether convection tube 7 welding position to be measured has drainage, is i.e. realized the welding matter to convection tube 7 to be measured
The detection of amount.As with or without drainage, then illustrate that this convection tube 7 to be measured is qualified, can continue to weld surrounding conduit；If any leaking
Phenomenon, then need to check, after problem to be solved, then continues detection with this detection device, until qualified.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (3)
1. detect a device for single boiler convection sealing of tube quality, including jack (12), it is characterised in that: also include pressure
Power fluid transmitter (4), supporting steel pipe (13) and curved plate (14)；Described pressure fluid transmitter (4) one end has spill
Chamber, the end face at concave shaped cavity outer rim described in this end is consistent with drum (8) internal chamber wall curvature and can fit on described internal chamber wall, and
And this end face is provided with the groove being mounted with sealing ring (3)；Described pressure fluid transmitter (4) is internal through transfer passage
(5), the pipe port (1) that described transfer passage (5) one end is positioned in convection tube to be measured (7) when being and use, the other end is connection mouth
(6)；The body of described pipe port (1) bottom is provided with locating ring (2)；During use, the same institute of telescopic end of described jack (12)
State the other end contact of pressure fluid transmitter (4)；The other end of the supporting steel pipe (13) that the same curved plate in one end (14) is welded
The base contacts of same jack (12).
The device of detection the most according to claim 1 single boiler convection sealing of tube quality, it is characterised in that it also includes
Being placed in the coupling between jack (12) and pressure fluid transmitter (4) during use, this coupling has steel plate (10), described steel
Plate (10) one side is fixed with the first spacing collar (11) for putting into jack (12) telescopic end, and described steel plate (10) another side is solid
Surely there is the second spacing collar (9) for putting into pressure fluid transmitter (4) other end.
3. using the method that device described in claim 1 or 2 detects single boiler convection sealing of tube quality, its feature exists
In, comprise the following steps:
A convection tube to be measured (7) that () welds with steamdrum and water drum respectively for two ends, at these convection tube to be measured (7) two ends
Described detection device it is respectively mounted in the steamdrum of position and water drum；Mounting means is: supporting steel pipe (13), jack
(12), pressure fluid transmitter (4) be sequentially connected with, or supporting steel pipe (13), jack (12), coupling, pressure fluid transmission
Device (4) is sequentially connected with, and the end face at pressure fluid transmitter (4) concave shaped cavity outer rim fits on drum (8) internal chamber wall, described pipe
Port (1) is positioned in convection tube to be measured (7) and locating ring (2) is also positioned at and makes pressure fluid transmitter in convection tube to be measured (7)
(4) can not radially wobble relative to convection tube to be measured (7)；The curved plate (14) of supporting steel pipe (13) one end is placed in be measured
On drum (8) inwall of convection tube (7) offside；
B () operation jack (12), forms compressing to described pressure fluid transmitter (4), makes the pressure fluid of sealing ring (3)
Transmitter (4) port is in close contact with drum (8) internal chamber wall, and formation is tightly connected；
C the connection mouth (6) of the detection device in one of them drum is closed by (), will detect the connection of device in another drum
Nozzle (6) is connected with high pressure water connector；In convection tube to be measured (7), inject water under high pressure, keep inner pipe water pressure no less than five minutes；
D () is observed whether convection tube to be measured (7) welding position has drainage, is i.e. realized the welding matter to convection tube to be measured (7)
The detection of amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410078047.XA CN103776594B (en) | 2014-03-05 | 2014-03-05 | A kind of device and method detecting single boiler convection sealing of tube quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410078047.XA CN103776594B (en) | 2014-03-05 | 2014-03-05 | A kind of device and method detecting single boiler convection sealing of tube quality |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103776594A CN103776594A (en) | 2014-05-07 |
| CN103776594B true CN103776594B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410078047.XA Active CN103776594B (en) | 2014-03-05 | 2014-03-05 | A kind of device and method detecting single boiler convection sealing of tube quality |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941438A (en) * | 2017-12-22 | 2018-04-20 | 南京新核复合材料有限公司 | A kind of device and detection method for detecting sealing leakage in GRP pipe hand paste |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2276621Y (en) * | 1996-03-31 | 1998-03-18 | 李百忍 | Heat pipe phase change type no-dirt water heater |
| CA2223247A1 (en) * | 1996-04-02 | 1997-10-09 | Guy Berube | Weld testing assembly |
| CN201302524Y (en) * | 2008-10-10 | 2009-09-02 | 安徽海螺川崎节能设备制造有限公司 | Water-pressure test unit for large-diameter thick-wall pipe joint of boiler-steam dome |
| JP2011141085A (en) * | 2010-01-07 | 2011-07-21 | Chugoku Electric Power Co Inc:The | Tube leakage detection method |
| CN202580378U (en) * | 2012-05-14 | 2012-12-05 | 湖南省工业设备安装有限公司 | Internal expanding type sealing connection device for pipeline pressure test |
| CN203745149U (en) * | 2014-03-05 | 2014-07-30 | 湖南省工业设备安装有限公司 | Device for detecting welding quality of single boiler convection tube |
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