CN209639909U - The scissor airtight leakage detecting device of girth joint - Google Patents
The scissor airtight leakage detecting device of girth joint Download PDFInfo
- Publication number
- CN209639909U CN209639909U CN201920703935.4U CN201920703935U CN209639909U CN 209639909 U CN209639909 U CN 209639909U CN 201920703935 U CN201920703935 U CN 201920703935U CN 209639909 U CN209639909 U CN 209639909U
- Authority
- CN
- China
- Prior art keywords
- clamping
- scissor
- pin shaft
- girth joint
- detecting device
- 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.)
- Active
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model provides a kind of airtight leakage detecting device of scissor girth joint comprising clamping unit, and the lifting unit for driving clamping unit to go up and down along longitudinal direction；Two clamping limbs of clamping unit, which intersect and are articulated as one by pin shaft, forms scissor-like structure, and pin shaft is fixed in positioning plate, and two clamping limbs, which are located between the upper end of the clamping upper arm above pin shaft, is hinged with an open-and-close mechanism that can be stretched in the horizontal direction；The clamping lower arm that two clamping limbs are located at below pin shaft is arc-shaped, and the lower end of each clamping lower arm is hinged with a detection cover box；Detection cover box is connected to by suction gun pipeline with leak detector.This scissor airtight leakage detecting device of girth joint is by designing specific scissor clamping unit, it can satisfy the circumference weld inspection of compatible different-diameter, realize flexible demand design, and simple and compact for structure, economic and reliable, detection error is effectively reduced, greatly facilitates repair and maintenance and the parts replacement of equipment.
Description
Technical field
The utility model belongs to air tightness detection equipment technical field, is related to one kind and is suitable for detection circular weld, such as
The airtight leakage detecting device of scissor girth joint of the girth joint of water heater liner.
Background technique
Circular weld abbreviation girth joint, the quality of air-tightness directly decide the service life of corresponding product.With ring
The typical products of weld seam, water heater liner as shown in Figure 1, generally by cylinder, both ends capping and nut are constituted, using welding
2 instruction in technological forming, girth joint such as figure.The airtight detection for how fast and accurately completing girth joint, is always in water heater
The key technology in gallbladder leak detection field.
The liner of different modes leaks hunting, and fast and accurately blocks to workpiece and positioning requirements are consistent.Currently, liner
Airtight detection there are mainly two types of method: one is Horizontal enclosed clamping tools, i.e., by side, capping is positioned liner, separately
Side capping is clamped, and is clamped so that liner be positioned, and the intake-outlet at top is sealed by lead screw and handwheel adjustment.
This mode only takes into account the closure of intake-outlet and sewage draining exit, carries out quantitative airtight detection, cannot achieve detection and localization.It is another
Kind method is vertical sealed clamping tool, i.e., is disposed vertically liner, and bottom is positioned by the profiling jig of capping, top
It is clamped using cylinder vertical depression.Meanwhile using rotating mechanism and electric cylinders, the inspection to girth joint and vertical welded seam is realized
It surveys.But since there are dimensional discrepancys for the manufacturing process of liner, cause the vertical centering of which poor.Moreover, girth joint
Detection device is excessively complicated, and for the liner of different size especially different-diameter girth joint, the time of remodeling is long, and maintenance is difficult.
By the analysis of both the above method it is found that how fast and accurately to complete the airtight test at liner girth joint, how to accomplish
The liner of same set of leak detection tool equipment compatible many kinds of specification is the technical problem in the field.
Utility model content
In view of this, the utility model is directed to a kind of airtight leakage detecting device of scissor girth joint comprising clamping is single
Member, and the lifting unit for driving clamping unit to go up and down along longitudinal direction；
Clamping unit includes two clamping limbs, and two clamping limbs, which intersect and are articulated as one by pin shaft, forms scissor knot
Structure, pin shaft are fixed in positioning plate, two clamping limbs be located at be hinged with one between the upper end of the clamping upper arm above pin shaft can be along water
Square to flexible open-and-close mechanism；
The clamping lower arm that two clamping limbs are located at below pin shaft is arc-shaped, and the lower end of each clamping lower arm is hinged with a detection
Cover box；Detection cover box is connected to by suction gun pipeline with leak detector.
Further, open-and-close mechanism is a folding cylinder, and the cylinder bottom and piston rod top end for opening and closing cylinder are respectively and in two clampings
It is hinged between the upper end of arm.
Further, the hinging pin shaft axle center for detecting the hinged axle center and two clamping limbs between cover box and clamping limb is mutually flat
Row.
Further, the lifting unit is fixed in using the screw-nut pair being driven by motor, the positioning plate of clamping unit
On screw.
Further, positioning plate is fixedly provided with above pin shaft prevents when open-and-close mechanism bounces back to most in short-term to limit clamping limb
Only its limited block around pin shaft deflection.
Further, guide roller is respectively provided at left and right sides of each detection cover box, when guide roller contradicts liner, detection cover
There are gaps between box and girth joint.
It further, further include the positioning and clamping mechanism for clamping liner positioning.
Compared with the existing technology, the airtight leakage detecting device of scissor girth joint of the utility model is by designing specific scissors
Formula clamping unit can satisfy the circumference weld inspection of the liner of compatible different-diameter, realize flexible demand design.The mechanism simultaneously
It is simple and compact for structure, it avoids that detection error is effectively reduced using complicated transmission mechanism.In addition, structure economics are reliable, greatly
Facilitate repair and maintenance and the parts replacement of equipment, further promotes the development of the airtight industry of leaking hunting of water heater liner.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.In
In attached drawing:
Fig. 1 is the schematic diagram of liner 1；
Fig. 2 is the stereoscopic schematic diagram of the airtight leakage detecting device of scissor girth joint；
Fig. 3 is the airtight leakage detecting device detecting state progression schematic diagram of scissor girth joint.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The airtight leak detection of girth joint of the liner of the compatible multiple diameter of mechanism, below in conjunction with the knot of Detailed description of the invention mechanism
Structure and working principle.
Mechanism includes clamping unit and lifting unit；The effect of lifting unit is that clamping unit is driven to go up and down along longitudinal direction；
As shown in Fig. 2, clamping unit includes two clamping limbs 11, two clamping limbs 11 intersect and hinged by pin shaft 113
It is formed as one scissor-like structure, pin shaft 113 is fixed in positioning plate 9, and two clamping limbs are located at the clamping upper arm 111 above pin shaft
Upper end between be hinged with an open-and-close mechanism that can be stretched in the horizontal direction；Open-and-close mechanism can be selected various structures and realize gas along water
Square to flexible function, it is preferred that in the present embodiment, what open-and-close mechanism was selected is a folding cylinder 10, opens and closes the cylinder of cylinder
Bottom and piston rod top end are hinged between the upper end of two clamping upper arm 111 respectively；
The clamping lower arm 112 that two clamping limbs 11 are located at 113 lower section of pin shaft is arc-shaped, the lower end of each clamping lower arm 112
It is hinged with a detection cover box 14, detects the hinged axle center between cover box 14 and clamping limb 11 and the hinging pin shaft axle center of two clamping limbs
It is parallel to each other；By rationally designing the bending radius of clamping lower arm 112, it is compatible that the detection to more specification inner liners may be implemented.Inspection
It surveys cover box 14 to be connected to by suction gun pipeline 15 with leak detector, detection cover box 14 is used to absorb the nitrogen hydrogen mixeding gas of leak source.
Lifting unit can be selected various structures and realize by driving positioning plate 9 to go up and down along longitudinal direction, to drive clamping unit
It goes up and down along longitudinal direction；Preferably, as shown in Fig. 2, in the present embodiment, lifting unit using be driven by motor screw-nut pair 8 (or
Referred to as electric cylinders), positioning plate 9 is fixed on screw, and fixed plate 7 is used to screw-nut pair 8 being fixed on other component.
Detection process of the mechanism to girth joint are as follows:
Original state as shown in Figure 3: liner carries out positioning clamping by other auxiliary bodies, and make mechanism be located to
The surface of girth joint is detected, open-and-close mechanism (folding cylinder 10) is in retracted mode, two detection cover box distances at this time
It is minimum；Preferably, positioning plate 9 is fixedly provided with the limited block 12 to clamping limb limit in the top of pin shaft 113, to prevent initial shape
When state, the deflection around pin shaft 13 occurs for clamping unit；Lifting unit (screw-nut pair 8) is rotated by motor rotate driving lead screw,
To drive screw to decline, the positioning plate 9 being fixed on screw declines therewith, to make clamping unit decline, until left and right two
A detection cover box 14 is down to the surface of corresponding girth joint and is reached within the scope of detecting distance with girth joint close to distance, preferably
, the left and right sides of each detection cover box 14 is respectively provided with guide roller 13 (as shown in Figure 2), liner is contradicted by guide roller 13,
Both ensure to detect the distance between cover box and girth joint and meet testing requirements, can also maintain the distance, moreover it is possible to avoid detection cover box
It is in contact when being relatively moved with girth joint, reduces the friction and damage to liner exemplar, while can effectively avoid welding slag etc.
Local crowning defect；
Screw-nut pair 8 continues to drive clamping unit downwards, the driving gas source of folding cylinder 10 is closed, so that clamping limb 11
And folding cylinder 10 fully relies on the reaction force that clamping limb 11 is contacted with liner and slowly opens, in the guidance of guide roller 13
Under, detection cover box 14 carries out tracking detection close to liner girth joint 2.When detecting the detection of 14 tracking of cover box, suction gun pipeline 15 and inspection
Leakage instrument is also turned on, and carries out real-time detection and localization to leak source；
Referring to shown in Fig. 3, after reaching intermediate state, is provided in the driving mouth side that control folding cylinder 10 retracts and stablize pressure
Power promotes folding cylinder 10 to start to retract, carries out the detection of lower half circumferential ring weld seam；Until the final state of Fig. 3, left and right two
It detects cover box 14 and reaches liner lowermost end.
There are two girth joints for liner tool, mechanism can be used to detect two weld seams respectively, bracket or other forms can also be used,
Two mechanisms are equipped with, while detecting two girth joints of a liner, repeats no more herein.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (7)
1. the scissor airtight leakage detecting device of girth joint, which is characterized in that
Including clamping unit, and the lifting unit for driving clamping unit to go up and down along longitudinal direction；
Clamping unit includes two clamping limbs, and two clamping limbs, which intersect and are articulated as one by pin shaft, forms scissor-like structure,
Pin shaft is fixed in positioning plate, two clamping limbs be located at be hinged with one between the upper end of the clamping upper arm above pin shaft can be along level side
To flexible open-and-close mechanism；
The clamping lower arm that two clamping limbs are located at below pin shaft is arc-shaped, and the lower end of each clamping lower arm is hinged with a detection cover
Box；Detection cover box is connected to by suction gun pipeline with leak detector.
2. the airtight leakage detecting device of scissor girth joint according to claim 1, which is characterized in that open-and-close mechanism is a folding
Cylinder, cylinder bottom and the piston rod top end for opening and closing cylinder are hinged between the upper end of two clamping upper arm respectively.
3. the airtight leakage detecting device of scissor girth joint according to claim 1, which is characterized in that detection cover box and clamping limb
Between hinged axle center and the hinging pin shaft axle center of two clamping limbs be parallel to each other.
4. the airtight leakage detecting device of scissor girth joint according to claim 1, which is characterized in that the lifting unit uses
The screw-nut pair being driven by motor, the positioning plate of clamping unit are fixed on screw.
5. the airtight leakage detecting device of scissor girth joint according to claim 1, which is characterized in that positioning plate is in the upper of pin shaft
Side is fixedly provided with most prevents it around the limited block of pin shaft deflection clamping limb limit in short-term when open-and-close mechanism bounces back to.
6. the airtight leakage detecting device of scissor girth joint according to claim 1, which is characterized in that a left side for each detection cover box
Right two sides are respectively provided with guide roller, and when guide roller contradicts liner, there are gaps between detection cover box and girth joint.
7. the airtight leakage detecting device of scissor girth joint according to claim 1, which is characterized in that further include positioning liner
The positioning and clamping mechanism of clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920703935.4U CN209639909U (en) | 2019-05-16 | 2019-05-16 | The scissor airtight leakage detecting device of girth joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920703935.4U CN209639909U (en) | 2019-05-16 | 2019-05-16 | The scissor airtight leakage detecting device of girth joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209639909U true CN209639909U (en) | 2019-11-15 |
Family
ID=68498552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920703935.4U Active CN209639909U (en) | 2019-05-16 | 2019-05-16 | The scissor airtight leakage detecting device of girth joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209639909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990950A (en) * | 2019-05-16 | 2019-07-09 | 天津博益气动股份有限公司 | The airtight leakage detecting device of scissor girth joint and detection method |
-
2019
- 2019-05-16 CN CN201920703935.4U patent/CN209639909U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990950A (en) * | 2019-05-16 | 2019-07-09 | 天津博益气动股份有限公司 | The airtight leakage detecting device of scissor girth joint and detection method |
| CN109990950B (en) * | 2019-05-16 | 2023-09-08 | 天津博益气动股份有限公司 | Scissor type girth weld airtight leakage detecting mechanism and detecting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105973986B (en) | Robot and detection method for the comprehensive detection of big volume Flat bottom container bottom plate defect | |
| CN109298077B (en) | Nonrust steel pipe butt weld detection device | |
| CN110017947A (en) | A kind of airtight leakage detection apparatus of girth joint being compatible with more specification inner liners and detection method | |
| CN104048801B (en) | Charge air cooler visual detection pressure testing table | |
| CN209639909U (en) | The scissor airtight leakage detecting device of girth joint | |
| CN208322377U (en) | Underwater pipeline dry-type automatic soldering device | |
| CN204479495U (en) | There is the x-ray detection device of laser positioning function | |
| CN209639908U (en) | A kind of airtight leakage detection apparatus of girth joint being compatible with more specification inner liners | |
| CN109990950A (en) | The airtight leakage detecting device of scissor girth joint and detection method | |
| RU177782U1 (en) | LOCAL IMMERSION BATH (LIV) FOR ULTRASONIC CONTROL OF PIPES, PREPARATIONS AND VARIETIES FOR RENT ANY FORM | |
| CN207318010U (en) | A kind of full-automatic ball valve gas measurement equipment | |
| CN203572783U (en) | X-ray real-time imaging detection welding seam tracking and correcting device for small-diameter steel tube | |
| CN117405310A (en) | Rubber ring sealing performance detection device | |
| CN110594581B (en) | Pressure test system and device | |
| CN104979027A (en) | Eddy current scanner for lower omega-shaped weld seam of control rod drive assembly of nuclear power plant | |
| CN111189851A (en) | Nondestructive testing device for interiors of metal pipeline and pressure vessel and working method | |
| CN103624373A (en) | Welding seam tracking and deviation rectification device for small-diameter steel tube X-ray real-time imaging detection | |
| CN216462563U (en) | Tubular product circumferential weld welding set | |
| CN207114141U (en) | A kind of combined valve detects automatic fixture device | |
| CN209664615U (en) | It is a kind of for pipe cutting and the device of welding | |
| CN109489731A (en) | A kind of quality detecting method after bellows assembling | |
| CN112665799A (en) | Pressure vessel weld joint detection tool and detection method | |
| CN104165928B (en) | A kind of seam inspection device based on straight line and circular tracking mode | |
| CN208704980U (en) | A kind of steel drum tests leakage machine | |
| CN220040427U (en) | Welding seam testing device for natural gas pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |