CN207036743U - The p-type boiler heating surface swollen rough detection device of austenite heat-resistance steel pipe external diameter - Google Patents
The p-type boiler heating surface swollen rough detection device of austenite heat-resistance steel pipe external diameter Download PDFInfo
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- CN207036743U CN207036743U CN201720702931.5U CN201720702931U CN207036743U CN 207036743 U CN207036743 U CN 207036743U CN 201720702931 U CN201720702931 U CN 201720702931U CN 207036743 U CN207036743 U CN 207036743U
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Abstract
The utility model belongs to technical field of nondestructive testing, is related to a kind of swollen rough detection device of p-type boiler heating surface austenite heat-resistance steel pipe external diameter.Including upper limit position block, lower position block, slewing limit block and handle.The upper limit position block is perpendicularly fixed on handle with lower position block；Described slewing limit block one end is connected with upper limit position block rotary type, and one end is detachably connected with lower position block.Upper limit position block, lower position block, slewing limit block form the detection zone of square with handle.It is swollen thick that the detection means both can fast and effeciently detect boiler heating surface austenite heat-resistance steel pipe external diameter, and directly judge swollen thick whether exceeded, determine whether to change pipeline section, again not because testing staff's capacity and caused by judge by accident, can be widely applied to the abrasionproof explosion-proof check of Thermal generation unit boiler heating surface austenite heat-resistance steel pipe.The structure of the detecting device is simple and convenient to operate, can Reusability.
Description
Technical field
The utility model belongs to technical field of nondestructive testing, and in particular to p-type boiler heating surface austenite heat-resistance steel pipe
External diameter is swollen rough detection device.
Background technology
Heating surface tubes in boilers is run under high temperature, hyperbaric environment for a long time, in factors such as flue dust, steam, high temperature, extraneous stress
Under comprehensive function, surface state, the structure property of these parts are gradually degraded, and the weak part external diameter of part can be caused when serious
Generation creep is swollen slightly to wait Dangerous defect, and causes it to extend rapidly and cause major accident, influences unit safety, economy, ring
Protect ground operation.The standard schedules such as DL/T 438, DL/T 939 are required to thick carry out in time of rising to heating surface tubes in boilers external diameter creep
Tracing detection, and pipeline section is changed in time.Wherein, DL/T 438《Thermal power plant alloying technology supervision code》In 9.3.19
Bar provides, when finding following situations a period of time, should change pipeline section in time：Austenite heat-resistance steel pipe external diameter creep should be greater than 4.5%.
For a long time, it is the most frequently used one kind side to the swollen rough detection of heating surface tubes in boilers external diameter creep using slide measure
Method, still, because boiler heating surface quantity is more, measuring point scope is wide, the boiler wear resistant explosion-proof check working time is tight, and workload is big,
Task weight, especially unit be non-stops during, the abrasionproof explosion-proof check time only has a few days, using slide measure detect boiler by
It is thick that hot facial canal external diameter is swollen, and one side job schedule is slow, and on the other hand, each reading may also be due to testing staff's ability level not
Calculate mistake together and cause to judge by accident, many difficulties are brought to the work of abrasionproof explosion-proof check.
In Publication No. CN202013180U Chinese patent, a kind of Power Station Boiler Heating Surface pipe laser diameter measurement is disclosed
Instrument, the top of its inverted trough-shaped housing are provided with cross slide way side by side, are set with sliding block on guide rail, sliding block can on guide rail left and right
Mobile, the bottom of the front and back ends of sliding block is respectively fixedly connected with two vertical suspension rods, and the bottom of one of suspension rod is provided with
Light emitters, the bottom of another suspension rod are provided with light sensor, and the upper surface of inverted trough-shaped housing is provided with one
The horizontal groove of bar, the upper surface of sliding block are provided with connecting rod, and connecting rod is through horizontal groove and is located at inverted flute profile shell
The controller connection of the top of body upper surface, a certain number of magnetic table is provided with the lower end of the medial surface of inverted trough-shaped housing
Seat, controller is interior to be provided with detection circuit.Its is complicated, with high costs, and equipment maintenance is complicated, and detection speed can not meet
Thick testing requirements that heating surface tubes in boilers external diameter creep is swollen, it is swollen thick whether exceeded heating surface tubes in boilers external diameter creep is not suitable for
Judge.
In Publication No. CN2274756 Chinese patent, a kind of compacted swollen measuring instrument of heating surface tubes in boilers is disclosed, including visit
Head and instrument.By by it is swollen it is thick after measured tube and scale between gap be converted into electric signal, read from meter reading.It is tied
Structure is complicated, with high costs, and equipment maintenance is complicated, and detection speed can not meet the swollen thick inspection of heating surface tubes in boilers external diameter creep
Survey and require, be not suitable for heating surface tubes in boilers external diameter creep it is swollen it is thick whether exceeded judgement.
Utility model content
The utility model aims to solve the problem that the problem of prior art is present, and is advised in boiler heating surface with austenite heat-resistance steel pipe
Under the conditions of lattice, particularly pipe external diameter are known, there is provided a kind of that the swollen thick detection of its external diameter can be effectively detected with fast and easy
Device.
To solve the above problems, technical scheme is used by the utility model：
A kind of p-type boiler heating surface swollen rough detection device of austenite heat-resistance steel pipe external diameter, including upper limit position block, lower limit
Block, slewing limit block and handle, one end of the upper limit position block are fixedly connected with handle front end, and upper limit position block is perpendicular to hand
Handle, one end of the lower position block are fixedly connected with handle, and lower position block is perpendicular to handle, the upper limit position block and lower position block
Between form localization region；The other end of the upper limit position block is connected with one end rotary type of slewing limit block, the revolution limit
The other end of the other end and the lower position block of position block is detachably connected with；The upper limit position block, lower position block, slewing limit
Detection zone is formed between block, handle；The handle free end is Handheld Division.The detection means is similar to p-type structure.
The upper limit position block sets pin-and-hole with slewing limit block junction, and the diameter of the pin-and-hole is less than the width of upper limit position block
Degree.
The slewing limit block both ends set pin-and-hole, and the diameter of the pin-and-hole is less than the width of slewing limit block.
The lower position block sets pin-and-hole with slewing limit block junction, and the diameter of the pin-and-hole is less than the width of lower position block
Degree.
The slewing limit block realizes that rotary type is connected with upper limit position block by rotating pin, and the slewing limit block is with
Limited block is detachably connected with by movable pin.
The distance between described upper limit position block and lower position block meet relational expression：L=D×（1+X%）, L be upper limit position block with
Spacing between lower position block；For D to treat test tube external diameter, X% is that existing power industry standard provides that Austenitic stainless steel pipe maximum is compacted
Variable coefficient.
Described relational expression：L=D×（1+X%）In, X% value is 4.5%.
The length of the slewing limit block is equal to the distance between upper and lower limited block, the width of upper limit position block, lower position block
Width three summation.
When the slewing limit block is in closure state, the distance between slewing limit block and handle be equal to upper limit position block and
The distance between lower position block.
The boiler heating surface is as follows with the detecting step of the swollen rough detection device of austenite heat-resistance steel pipe external diameter：
Step 1, opening activity pin, revolution limited block is rotated, the detection means is opened；
Step 2, the localization region by pipe clamp to be measured between upper limit position block and lower position block, against handle, localization region
Distance up and down be L, treat a diameter of D of test tube, X% is the regulation Austenitic stainless steel pipe maximum creep of existing power industry standard
Coefficient, L and D meet relationship below：L=D×（1+X%）, wherein X% value is 4.5%；
Step 3, revolution limited block is rotated, detection means is closed by movable pin and fixed, makes to treat that test tube is in detection
Region；
Step 4, the Handheld Division of handle of stopping is held, by the detection means along treating that test tube slides axially, in the event of bite,
Expression treats that the swollen extra coarse of test tube has crossed power industry standard regulation Austenitic stainless steel pipe maximum creep coefficient 4.5%, is judged to not conforming to
Lattice are, it is necessary to be changed；If can smoothly slide, it is swollen thick or swollen slightly less than power industry standard rule that expression treats that test tube does not have
Determine Austenitic stainless steel pipe maximum creep coefficient 4.5%, it is qualified to be determined as.
The utility model has advantages below and effect compared with prior art：The detection means both can be fast and effeciently
It is swollen thick with austenite heat-resistance steel pipe external diameter to detect boiler heating surface, and directly judges whether it is exceeded, it is determined whether to the pipeline section
Change, judged by accident caused by can not occurring to calculate mistake because of the influence of testing staff's ability level again, the structure of the detecting device is simple, behaviour
Facilitate, can Reusability, the abrasionproof that can be widely applied to Thermal generation unit boiler heating surface austenite heat-resistance steel pipe prevents
Quick-fried inspection.The length of described slewing limit block is equal to the distance between upper and lower limited block, the width of upper limit position block, lower limit
The summation of the width three of block, it is reasonable in design, can be easy to carry and store.
Brief description of the drawings
Fig. 1 is the swollen rough detection schematic device of the utility model p-type boiler heating surface austenite heat-resistance steel pipe external diameter.
In figure, 1 is upper limit position block, and 2 be lower position block, and 3 be slewing limit block, and 4 be handle, and 5 is rotate pin, and 6 be work
Dynamic pin.
Embodiment
It is described in further detail below in conjunction with the accompanying drawings and by embodiment to the technical solution of the utility model, below
Embodiment be to it is of the present utility model explanation and the utility model is not limited to following examples.
Specific embodiment.
Referring to Fig. 1, the utility model is a kind of swollen rough detection dress of p-type boiler heating surface austenite heat-resistance steel pipe external diameter
Put, including upper limit position block 1, lower position block 2, slewing limit block 3 and handle 4, one end of the upper limit position block 1 and handle 4 most before
End is fixedly connected, and upper limit position block 1 is fixedly connected perpendicular to handle 4, one end of the lower position block 2 with handle 4, lower position block 2
Perpendicular to handle 4, localization region is formed between the upper limit position block 1 and lower position block 2；The other end of the upper limit position block 1 with
One end rotary type connection of slewing limit block 3, the other end of the other end of the slewing limit block 3 and the lower position block 2 are torn open
Unload formula connection；Detection zone is formed between the upper limit position block 1, lower position block 2, slewing limit block 3, handle 4；The handle 4
Free end is Handheld Division.The detection means is similar to p-type structure.
In the present embodiment, upper limit position block 1 sets pin-and-hole with the junction of slewing limit block 3, and the pin-and-hole diameter is less than the upper limit
The width of position block 1, i.e. R value is less than L in Fig. 12Value.
In the present embodiment, the both ends of slewing limit block 3 set pin-and-hole, and the pin-and-hole diameter is less than the width of slewing limit block 3,
That is R value is less than L in Fig. 12Value.
In the present embodiment, lower position block 2 sets pin-and-hole with the junction of slewing limit block 3, and the pin-and-hole diameter is less than lower limit
The width of position block 2, i.e. R value is less than L in Fig. 12Value.
In the present embodiment, the slewing limit block 3 realizes that rotary type is connected with upper limit position block 1 by rotating pin 5, described
Slewing limit block 3 is detachably connected with lower position block 2 by movable pin 6.
In the present embodiment, the distance between described upper limit position block 1 and lower position block 2 meet relational expression：L1=D×（1+
4.5%）, L1For the spacing between upper limit position block 1 and lower position block 2；For D to treat test tube external diameter, 4.5% is existing power industry standard
Austenitic stainless steel pipe maximum creep coefficient is provided, when Austenitic stainless steel pipe maximum creep coefficient occurs in power industry standard
During change, its numerical value updates therewith.
In the present embodiment, the length of the slewing limit block 3 be equal to the distance between upper limit position block 1 and lower position block 2, on
The width of limited block 1, the summation of the width three of lower position block 2.
In the present embodiment, when slewing limit block 3 is in closure state, the distance between slewing limit block 3 and handle 4 are equal to
The distance between upper limit position block 1 and lower position block 2.
The described boiler heating surface swollen rough detection device of austenite heat-resistance steel pipe external diameter, its detecting step are as follows：
Step 1, opening activity pin 6, revolution limited block 3 is rotated, the detection means is opened；
Step 2, the localization region by pipe clamp to be measured between upper limit position block 1 and lower position block 2, against handle 4, positioning area
The distance up and down in domain is L1, a diameter of D of test tube is treated, 4.5% is that existing power industry standard provides that Austenitic stainless steel pipe is maximum
Creep coefficient, when Austenitic stainless steel pipe maximum creep coefficient changes in power industry standard, its numerical value updates therewith,
L1Meet relationship below with D：L1=D×（1+4.5%）；
Step 3, revolution limited block 3 is rotated, detection means is closed by movable pin 6 and fixed, makes to treat that test tube is in inspection
Survey region；
Step 4, the Handheld Division of handle 4 of stopping is held, by the detection means along treating that test tube slides axially, in the event of blocking
Puckery, expression treats that the swollen extra coarse of test tube has crossed power industry standard regulation Austenitic stainless steel pipe maximum creep coefficient 4.5%, is determined as
It is unqualified, it is necessary to be changed；If can smoothly slide, expression treats that test tube does not have swollen thick or swollen is slightly less than power industry mark
Quasi- regulation Austenitic stainless steel pipe maximum creep coefficient 4.5%, it is qualified to be determined as.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, it is named
Title etc. can be different, and the above content described in this specification is only to the utility model example explanation.It is all according to
The equivalence changes or simple change done according to the utility model patent design described construction, feature and principle, are included in
In the protection domain of the utility model patent.The utility model person of ordinary skill in the field can be to described specific
Embodiment is made various modifications or supplement or substituted using similar mode, without departing from structure of the present utility model or
Person surmounts scope defined in the claims, all should belong to the scope of protection of the utility model.
Claims (10)
1. a kind of p-type boiler heating surface swollen rough detection device of austenite heat-resistance steel pipe external diameter, it is characterised in that including upper limit
Block, lower position block, slewing limit block and handle, one end of the upper limit position block are fixedly connected with handle front end, upper limit position block
Perpendicular to handle, one end of the lower position block is fixedly connected with handle, lower position block perpendicular to handle, the upper limit position block with
Localization region is formed between lower position block；The other end of the upper limit position block is connected with one end rotary type of slewing limit block, institute
The other end for stating the other end and the lower position block of slewing limit block is detachably connected with；The upper limit position block, lower position block, return
Turn to form detection zone between limited block, handle；The free end of the handle is Handheld Division.
2. the p-type boiler heating surface according to claim 1 swollen rough detection device of austenite heat-resistance steel pipe external diameter, its feature
It is, upper limit position block sets pin-and-hole with slewing limit block junction, and the diameter of the pin-and-hole is less than the width of upper limit position block.
3. the p-type boiler heating surface according to claim 1 swollen rough detection device of austenite heat-resistance steel pipe external diameter, its feature
It is, slewing limit block both ends set pin-and-hole, and the diameter of the pin-and-hole is less than the width of slewing limit block.
4. the p-type boiler heating surface according to claim 1 swollen rough detection device of austenite heat-resistance steel pipe external diameter, its feature
It is, lower position block sets pin-and-hole with slewing limit block junction, and the diameter of the pin-and-hole is less than the width of lower position block.
5. the p-type boiler heating surface according to claim 1 swollen rough detection device of austenite heat-resistance steel pipe external diameter, its feature
It is, the slewing limit block realizes that rotary type is connected with upper limit position block by rotating pin.
6. the p-type boiler heating surface according to claim 1 swollen rough detection device of austenite heat-resistance steel pipe external diameter, its feature
It is, the slewing limit block is detachably connected with lower position block by movable pin.
7. the p-type boiler heating surface according to claim 1 swollen rough detection device of austenite heat-resistance steel pipe external diameter, its feature
It is, the distance between described upper limit position block and lower position block meet relational expression：L=D×（1+X%）, L is upper limit position block and lower limit
Spacing between the block of position；For D to treat test tube external diameter, X% is that existing power industry standard provides Austenitic stainless steel pipe maximum creep system
Number.
8. the p-type boiler heating surface according to claim 7 swollen rough detection device of austenite heat-resistance steel pipe external diameter, its feature
It is, the value of the X% is 4.5%.
9. the p-type boiler heating surface according to claim 1 swollen rough detection device of austenite heat-resistance steel pipe external diameter, its feature
It is, the length of the slewing limit block is equal to the distance between upper and lower limited block, the width of upper limit position block, lower position block
The summation of width three.
10. the p-type boiler heating surface according to claim 1 swollen rough detection device of austenite heat-resistance steel pipe external diameter, it is special
Sign is, when the slewing limit block is in closure state, the distance between slewing limit block and handle be equal to upper limit position block and
The distance between lower position block.
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| CN201720702931.5U CN207036743U (en) | 2017-06-16 | 2017-06-16 | The p-type boiler heating surface swollen rough detection device of austenite heat-resistance steel pipe external diameter |
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| CN201720702931.5U CN207036743U (en) | 2017-06-16 | 2017-06-16 | The p-type boiler heating surface swollen rough detection device of austenite heat-resistance steel pipe external diameter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219250A (en) * | 2017-06-16 | 2017-09-29 | 华电电力科学研究院 | The p-type boiler heating surface swollen rough detection device and method of austenite heat-resistance steel pipe external diameter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219250A (en) * | 2017-06-16 | 2017-09-29 | 华电电力科学研究院 | The p-type boiler heating surface swollen rough detection device and method of austenite heat-resistance steel pipe external diameter |
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