CN201051084Y - Pipeline welding seam detection device - Google Patents
Pipeline welding seam detection device Download PDFInfo
- Publication number
- CN201051084Y CN201051084Y CNU2007200798178U CN200720079817U CN201051084Y CN 201051084 Y CN201051084 Y CN 201051084Y CN U2007200798178 U CNU2007200798178 U CN U2007200798178U CN 200720079817 U CN200720079817 U CN 200720079817U CN 201051084 Y CN201051084 Y CN 201051084Y
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- support
- welding seam
- pipeline
- rubber tire
- pipe welding
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- 238000003466 welding Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 title abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The utility model discloses a pipeline welding seam detection device, including computer, ray source and detector are adorned respectively on support A and support B, and support A and support B articulate to become to be greater than 180 degrees circular arc and encircle on the pipeline, are provided with the rubber tyer on the support, the rubber tyer through locking mechanism control support B's degree of opening and shutting and pipeline paste tightly, actuating mechanism's rubber tyer is rotary motion by the drive of driver. The whole detection device can automatically move along the circumference of the pipeline under the drive of the driving mechanism; the utility model discloses a no track friction drive, simple structure, manufacturing cost is lower.
Description
Technical field
The utility model belongs to the field of nondestructive examination checkout equipment, is specifically related to a kind of pipe welding seam pick-up unit.
Background technology
In the construction of aspects such as oil, chemical industry, iron and steel, bridge, urban construction, relate to a large amount of pipeline laying work, the connection between the pipeline adopts welding method to construct mostly.For the construction quality that guarantees to weld, just need butt welded seam to carry out Non-Destructive Testing.General now radiographic inspection and the UT (Ultrasonic Testing) of adopting surveyed for butt welded seam carries out full week, and defect-detecting equipment will be full Zhou Yundong at pipe surface.At present, defect-detecting equipment is to finish by the artificial mode that moves along the circumferential movement of pipe surface, and just after the detection a bit, manual mobile defect-detecting equipment is detected a flaw to down a bit again.The weak point of this mode is that the manual workload that moves is too big, inefficiency, and easily the healthy of site operation personnel impacted.
Summary of the invention
For overcome the inefficiency that exists in the above-mentioned prior art, the manual workload that moves of defect-detecting equipment big, avoid the ray influence healthy, the utility model to the site operation personnel provide a kind of can be along the pipe surface automatic shift, can increase work efficiency, make the site operation personnel away from radiogenic pipe welding seam pick-up unit greatly.
Pipe welding seam pick-up unit of the present utility model mainly comprises computing machine, radiographic source and detector, and described radiographic source and detector are fixedly mounted on respectively on support A and the support B, and support A and support B are hinged to greater than the circular arc of 180 degree and are looped around on the pipeline; One end of latch mechanism links to each other with support A, and its other end links to each other with support B.Driving mechanism comprises driver and rubber tire, and rubber tire is driven the device driving and rotates.Rubber tire is fixedly installed on the support, and rubber tire is adjacent to by folding degree and the pipeline of latch mechanism control support B.
Be provided with each one group on the capacity eccentric bearing of wobbler action and bearing in the eccentric frame of described latch mechanism, and it is hinged with support A by axle, connecting plate and eccentric frame fix up, pivoted frame is hinged by axle and eccentric frame, one end and the fulcrum on the support B of check lock lever are hinged, the other end of check lock lever links to each other with pivoted frame, the dish spring that makes rubber tire that pretightning force be arranged on pipeline is housed below the pivoted frame, and the adjusting of check lock lever by nut is to change the distance of check lock lever between fulcrum and pivoted frame.
Computing machine is to work order under the radiographic source, and radiographic source is started working, and radiogenic ray passes pipe welding seam and gets on the detector, and detector transmits back computing machine with the ray signal that receives and carries out signal analysis; Computing machine sends work order to driving mechanism then, and driving mechanism rotates and makes radiographic source and detector forward next station to.
Rubber tire in the utility model is adjacent to by folding degree and the pipeline of latch mechanism control support B, along with the difference of the folding degree size of support B, to satisfy the detection needs of multiple diameter pipeline.
In the utility model,, make whole device do circumferential movement along pipeline automatically, avoided the workload of manual mobile device, improved the efficient of flaw detection work widely owing to adopted the driver drives rubber tire to rotate; And rubber tire can operate by Long-distance Control, makes the site operation personnel needn't carry out closely operation, thereby reduced the harm of the ray of defect-detecting equipment to operating personnel's health; In addition, the utility model has adopted no track friction gearing principle, and simple in structure, manufacturing cost is lower.
Description of drawings
Fig. 1 is the structural representation perpendicular to the pipeline axial direction of the present utility model
Fig. 2 is the structural representation along the pipeline axial direction of the present utility model
Fig. 3 is a work system block diagram of the present utility model
Fig. 4 is the structural representation of the latch mechanism in the utility model
Fig. 5 is the structural representation of the driving mechanism in the utility model
1. 26. 51. support A of radiographic source 2. detector 3. driving mechanisms, 4. latch mechanism 5. supports, 6. excentric shaft 7. bearings, 8. bearing 9. butterfly springs, 10. rubber tire 11. pivoted frames, 12. check lock lever 13. handles, 14. eccentric frame 15. bearings, 16. driver 17. wheel carriers, 18. keys 19. 20. pipelines, 21. fulcrums 22. 23. clamp rings, 24. nuts, 25. connecting plates, 52. support B
Embodiment
Below in conjunction with accompanying drawing a kind of pipe welding seam pick-up unit of the present utility model is described in detail.
From Fig. 1 and Fig. 2 as can be seen, in the utility model, the pipe welding seam pick-up unit mainly comprises computing machine, radiographic source 1, detector 2; Support 5 is made up of support A51 and support B52, and support A51 and support B52 are by being articulated and connected, and radiographic source 1 and detector 2 are contained in respectively on support A51 and the support B52; During work, the circular arc that support A51 and support B52 form greater than 180 degree can not fall down from pipeline 20 to guarantee whole pipe weld seam detection device.
As shown in Figure 5, for whole pipe weld seam detection device can will arranged three covers or the rubber tire 10 more than three covers, and preferably be distributed on the support 5 at least around pipeline 20 rotations on the support 5.Driving mechanism 3 by 19 on axle on the end of support 5, driver 16 links to each other with wheel carrier 17 with axle 19 by key 18, and rubber tire 10 is fixedlyed connected with wheel carrier 17 and is supported on the bearing 15, the outer peripheral face of rubber tire 10 contacts with pipeline 20, and driver 16 rotates drive rubber tire 10 and does circumferential movement at pipeline 20; But will really make whole pipe weld seam detection device get up also must make rubber tire 10 that enough adhesion is arranged on pipeline 20 in motion on the pipeline 20, this just needs latch mechanism 4 and adjusts the adhesion of rubber tire 10 on pipeline 20.
As shown in Figure 4, the bearing 7 of wobbler action and bearing 8 each one group has been housed in the eccentric frame 14 of latch mechanism 4, and hinged by excentric shaft 6 with support A51, and connecting plate 25 fixes up with eccentric frame 14, pivoted frame 11 is hinged by axle 26 and eccentric frame 14, and handle 13 is affixed with connecting plate 25.One end and the fulcrum 21 on the support B52 of the check lock lever 12 of latch mechanism 4 are hinged, the other end of check lock lever 12 links to each other with pivoted frame 11, butterfly spring 9 is housed so that rubber tire 10 has pretightning force on pipeline 20 below the pivoted frame 11, butterfly spring 9 can make butterfly spring 9 move along axle 22 by the adjusting of clamp ring 23, to adjust the adhesion of rubber tire 10 on pipeline 20; Check lock lever 12 also can pass through the adjusting of nut 24 with the distance of change check lock lever 12 between fulcrum 21 and pivoted frame 11, thereby the folding degree of realization support B52 is to adjust the pretightning force of rubber tire 10 on pipeline 20.If space structure is unrestricted, butterfly spring 9 also can be the spring of other form.
In the utility model, detector 2 adopts the amorphous silicon flat panel detector.The amorphous silicon flat panel detector image-forming is the novel ray detection technology that grows up the nineties in 20th century.As present state-of-the-art digitalized image technology, many advantages are arranged, as do not have edge geometry deformation, whole imaging area to have uniform sensitivity and resolution, bigger dynamic range, big imaging area and real-time video imaging etc., be unique technology that can comprehensively replace film camera.The amorphous silicon detector is a kind of ray detector based on amorphous silicon photodiodes, the same with general low-light level imaging device, be a kind of mode imaging with light, electronics accumulation, it comprises three parts: the one, and the scintillator film of submillimeter level thickness, material is generally Gd202S or CsI; The 2nd, with the direct-coupled extensive integrated photodiode array (TFT) of scintillator film; The 3rd, visit first sensing circuit, A/D conversion and amplifying circuit.The amorphous silicon flat panel detector is close to the mode of coupling with scintillator to the photoelectric diode panel, has improved ray photons conversion efficiency and the contrast that is integrated into picture effectively; Convert photoelectron stored charge image to digital signal in real time simultaneously and transmitted, effectively suppressed transmitted noise.
In the utility model, radiographic source 1 adopts the metal ceramic tube mobile X-ray unit, and concrete model is circumferential machine of Smart 300HP and Smart 200PC Direction Finder.Main cause is: metal ceramic tube is with the stainless steel instead of glass, and as insulating medium, it is firm that this structure has structure with pottery, long service life, and characteristics such as in light weight have greatly improved the performance of ray tube, have reduced the ray tube volume.The penetration capacity of X-ray machine is except outside the Pass having with ray energy, and is also relevant with the high pressure ripple, i.e. high-voltage stability.Smart series of X ray machine high-voltage power supply adopts 100kHz HF switch technology, voltage ripple less than 6V/mA about.
Fig. 3 is a system of the present utility model control block diagram.The testing of first station of pipe welding seam is such: computing machine is given 1 time work order of radiographic source, radiographic source 1 is started working, the ray of radiographic source 1 passes pipe welding seam and gets on the detector 2, detector 2 transmits back computing machine with the ray signal that receives and carries out signal analysis, through after the analysis of computing machine, computing machine butt welded seam quality makes a determination and estimates; Computing machine sends work order for driving mechanism 3 then, and driving mechanism 3 rotates and makes radiographic source 1 forward next station to, repeats the testing of first station then; Like this pipe welding seam is carried out full week and detect, thereby avoided the inconvenience of artificial mobile sniffer, and make the personnel of working site avoid the threat of x radiation x.
In the utility model, the application of latch mechanism, detector, radiographic source and driving mechanism also can be selected other type or alternate manner, as long as can reach the purpose of this utility model, all belongs to protection category of the present utility model.
Claims (7)
1. pipe welding seam pick-up unit, comprise computing machine, radiographic source (1) and detector (2), it is characterized in that: radiographic source of described pick-up unit (1) and detector (2) are fixedly mounted on respectively on support A (51) and the support B (52), and support A (51) and support B (52) are looped around on the pipeline (20) by the circular arc of hinged formation greater than 180 degree; Support (5) is provided with driving mechanism (3); One end of latch mechanism (4) links to each other with support A (51), and its other end links to each other with support B (52); Driving mechanism (3) comprises driver (16) and rubber tire (10), and rubber tire (10) is driven device (16) driving and rotates; Rubber tire (10) is adjacent to by folding degree and the pipeline (20) of latch mechanism (4) control support B (52).
2. pipe welding seam pick-up unit according to claim 1, it is characterized in that: the bearing pack (7 that has been provided with wobbler action in the eccentric frame (14) of described latch mechanism (4), 8), and it is hinged with support A (51) by axle (6), connecting plate (25) fixes up with eccentric frame (14), pivoted frame (11) is hinged by axle (26) and eccentric frame (14), fulcrum (21) on one end of check lock lever (12) and the support B (52) is hinged, the other end of check lock lever (12) links to each other with pivoted frame (11), the dish spring (9) that makes rubber tire (10) that pretightning force be arranged on pipeline (20) is housed below the pivoted frame (11), and check lock lever (12) passes through the adjusting of nut (24) to change the distance of check lock lever (12) between fulcrum (21) and pivoted frame (11).
3. rotational motion mechanism according to claim 2 is characterized in that: described butterfly spring (9) makes butterfly spring (9) move along axle (22) by the adjusting of clamp ring (23).
4. pipe welding seam pick-up unit according to claim 1 is characterized in that: described rubber tire (10) is distributed on the support (5).
5. according to claim 1 or 3 described pipe welding seam pick-up units, it is characterized in that: the quantity of described rubber tire (10) is more than three covers or three overlap.
6. pipe welding seam pick-up unit according to claim 1 is characterized in that: described radiographic source (1) adopts the metal ceramic tube mobile X-ray unit.
7. pipe welding seam pick-up unit according to claim 1 is characterized in that: described detector (2) adopts the amorphous silicon flat panel detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200798178U CN201051084Y (en) | 2007-06-05 | 2007-06-05 | Pipeline welding seam detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200798178U CN201051084Y (en) | 2007-06-05 | 2007-06-05 | Pipeline welding seam detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201051084Y true CN201051084Y (en) | 2008-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200798178U Expired - Lifetime CN201051084Y (en) | 2007-06-05 | 2007-06-05 | Pipeline welding seam detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201051084Y (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135505A (en) * | 2010-01-27 | 2011-07-27 | 鸿富锦精密工业（深圳）有限公司 | Non-destructive detection method of soldering crack |
| CN102706909A (en) * | 2012-06-17 | 2012-10-03 | 无锡市优耐特石化装备有限公司 | Circumferential detection device for circular seam of thin-walled container |
| CN102768218A (en) * | 2012-07-17 | 2012-11-07 | 中广核检测技术有限公司 | Radiographic inspection tool rack for nozzle welding line of voltage stabilizer in nuclear power station |
| CN104864272A (en) * | 2015-04-18 | 2015-08-26 | 中国矿业大学 | Automatic scanning device for oil and gas pipeline phased array ultrasonic testing |
| CN105842403A (en) * | 2016-05-13 | 2016-08-10 | 苏州精美科光电材料有限公司 | Detection device for tube target inner wall |
| CN105889761A (en) * | 2016-04-25 | 2016-08-24 | 朱德仲 | Expansion coefficient detector for natural gas pipeline |
| CN107076686A (en) * | 2014-07-11 | 2017-08-18 | 萨比亚股份有限公司 | Prompt fission gammas's neutron activation species analysis instrument |
| CN107328796A (en) * | 2017-07-31 | 2017-11-07 | 南京佳业检测工程有限公司 | A kind of angle welding ray detecting apparatus |
| CN107561096A (en) * | 2016-11-02 | 2018-01-09 | 湖北航天化学技术研究所 | Automatic controlling and positioning device for rocket engine Non-Destructive Testing |
| CN108195857A (en) * | 2018-03-28 | 2018-06-22 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of auxiliary device for different-diameter pipeline non-destructive testing |
| CN109580674A (en) * | 2019-01-22 | 2019-04-05 | 淇淩智能科技(上海)有限公司 | A kind of online solder joint of self-shileding, weld inspection system |
| CN109799249A (en) * | 2019-02-27 | 2019-05-24 | 中国工程物理研究院机械制造工艺研究所 | A kind of vehicle-mounted CT nondestructive detection system |
| CN110132977A (en) * | 2019-04-26 | 2019-08-16 | 嘉兴市建设工程质量检测有限公司 | A kind of Steel Structure Weld detection device |
| CN111347392A (en) * | 2020-03-17 | 2020-06-30 | 深圳市人工智能与机器人研究院 | Detection robot |
| CN111610196A (en) * | 2019-02-22 | 2020-09-01 | 汉阳Eng株式会社 | Weld bead inspection device for welded pipe |
-
2007
- 2007-06-05 CN CNU2007200798178U patent/CN201051084Y/en not_active Expired - Lifetime
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135505A (en) * | 2010-01-27 | 2011-07-27 | 鸿富锦精密工业（深圳）有限公司 | Non-destructive detection method of soldering crack |
| CN102706909A (en) * | 2012-06-17 | 2012-10-03 | 无锡市优耐特石化装备有限公司 | Circumferential detection device for circular seam of thin-walled container |
| CN102768218A (en) * | 2012-07-17 | 2012-11-07 | 中广核检测技术有限公司 | Radiographic inspection tool rack for nozzle welding line of voltage stabilizer in nuclear power station |
| CN107076686A (en) * | 2014-07-11 | 2017-08-18 | 萨比亚股份有限公司 | Prompt fission gammas's neutron activation species analysis instrument |
| CN104864272A (en) * | 2015-04-18 | 2015-08-26 | 中国矿业大学 | Automatic scanning device for oil and gas pipeline phased array ultrasonic testing |
| CN105889761A (en) * | 2016-04-25 | 2016-08-24 | 朱德仲 | Expansion coefficient detector for natural gas pipeline |
| CN105842403A (en) * | 2016-05-13 | 2016-08-10 | 苏州精美科光电材料有限公司 | Detection device for tube target inner wall |
| CN107561096A (en) * | 2016-11-02 | 2018-01-09 | 湖北航天化学技术研究所 | Automatic controlling and positioning device for rocket engine Non-Destructive Testing |
| CN107561096B (en) * | 2016-11-02 | 2023-03-17 | 湖北航天化学技术研究所 | Self-control positioning device for nondestructive testing of rocket engine |
| CN107328796A (en) * | 2017-07-31 | 2017-11-07 | 南京佳业检测工程有限公司 | A kind of angle welding ray detecting apparatus |
| CN108195857A (en) * | 2018-03-28 | 2018-06-22 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of auxiliary device for different-diameter pipeline non-destructive testing |
| CN109580674A (en) * | 2019-01-22 | 2019-04-05 | 淇淩智能科技(上海)有限公司 | A kind of online solder joint of self-shileding, weld inspection system |
| CN111610196A (en) * | 2019-02-22 | 2020-09-01 | 汉阳Eng株式会社 | Weld bead inspection device for welded pipe |
| CN111610196B (en) * | 2019-02-22 | 2023-10-27 | 汉阳Eng株式会社 | Weld bead inspection device for welded pipe |
| CN109799249A (en) * | 2019-02-27 | 2019-05-24 | 中国工程物理研究院机械制造工艺研究所 | A kind of vehicle-mounted CT nondestructive detection system |
| CN109799249B (en) * | 2019-02-27 | 2024-02-23 | 中国工程物理研究院机械制造工艺研究所 | Vehicle-mounted CT nondestructive testing system |
| CN110132977A (en) * | 2019-04-26 | 2019-08-16 | 嘉兴市建设工程质量检测有限公司 | A kind of Steel Structure Weld detection device |
| CN110132977B (en) * | 2019-04-26 | 2021-10-01 | 嘉兴市建设工程质量检测有限公司 | Steel construction welding seam detection device |
| CN111347392A (en) * | 2020-03-17 | 2020-06-30 | 深圳市人工智能与机器人研究院 | Detection robot |
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Owner name: SICHUAN ZHONGWU INSTRUMENT CO., LTD. Free format text: FORMER OWNER: JIULI TECHNOLOGY INDUSTRIAL CO., LTD., SCIENCE CITY, SICHUAN PROVINCE Effective date: 20101118 Owner name: JIULI TECHNOLOGY INDUSTRIAL CO., LTD., SCIENCE CIT Free format text: FORMER OWNER: APPLIED ELECTRONICS INST., CHINESE ENGINEERING PHYSICS INST. Effective date: 20101118 |
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Effective date of registration: 20101118 Address after: Mianyang City, Sichuan Province, 621900 Mountain Road No. 64 Patentee after: Sichuan Zhong Yi Instrument Co.,Ltd. Address before: Mianyang City, Sichuan Province, 621900 Mountain Road No. 64 Patentee before: Sichuan Science City Jiuli Technology Industrial Co.,Ltd. Effective date of registration: 20101118 Address after: Mianyang City, Sichuan Province, 621900 Mountain Road No. 64 Patentee after: Sichuan Science City Jiuli Technology Industrial Co.,Ltd. Address before: 919 box 1015, box 621900, Mianyang City, Sichuan Province Patentee before: INSTITUTE OF APPLIED ELECTRONICS, CAEP |
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Owner name: SICHUAN JIUJIU RUIDI DIGITAL IMAGING TECHNOLOGY CO Free format text: FORMER NAME: SICHUAN ZHONGWU INSTRUMENTS CO., LTD. |
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Address after: Mianyang City, Sichuan Province, 621900 Mountain Road No. 64 Patentee after: SICHUAN DNDR DIGITAL RADIOGRAPHY TECHNOLOGY Co.,Ltd. Address before: Mianyang City, Sichuan Province, 621900 Mountain Road No. 64 Patentee before: Sichuan Zhong Yi Instrument Co.,Ltd. |
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| ASS | Succession or assignment of patent right |
Owner name: SICHUAN DPRI TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SICHUAN JIUJIU RUIDI DIGITAL IMAGING TECHNOLOGY CO., LTD. Effective date: 20130709 |
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Free format text: CORRECT: ADDRESS; FROM: 621900 MIANYANG, SICHUAN PROVINCE TO: 621000 MIANYANG, SICHUAN PROVINCE |
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Effective date of registration: 20130709 Address after: 621000 Mianyang city of Sichuan province Mianyang Branch Chong Park Middle Road No. 237 Patentee after: SICHUAN DPRI TECHNOLOGY CO.,LTD. Address before: Mianyang City, Sichuan Province, 621900 Mountain Road No. 64 Patentee before: SICHUAN DNDR DIGITAL RADIOGRAPHY TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term |
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