CN216049686U - Length and outer diameter measuring device for nuclear fuel cladding tube or fuel rod - Google Patents
Length and outer diameter measuring device for nuclear fuel cladding tube or fuel rod Download PDFInfo
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- CN216049686U CN216049686U CN202122457339.2U CN202122457339U CN216049686U CN 216049686 U CN216049686 U CN 216049686U CN 202122457339 U CN202122457339 U CN 202122457339U CN 216049686 U CN216049686 U CN 216049686U
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- cladding tube
- rotating wheel
- fuel rod
- outer diameter
- length
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model discloses a length and outer diameter measuring device for a nuclear fuel cladding tube or a fuel rod, which comprises a rotating wheel mechanism for bearing the nuclear fuel cladding tube or the fuel rod to be detected, a linear module arranged side by side with the rotating wheel mechanism, a detection bracket arranged on the movable end of the linear module, and an optical measuring assembly arranged on the detection bracket and used for detecting the length and the outer diameter of the nuclear fuel cladding tube or the fuel rod. The rotating wheel mechanism is used as a support of the long cylindrical nuclear fuel element cladding tube or the fuel rod, the outer diameter and the length of the cladding tube or the fuel rod are measured through the optical measuring assemblies arranged on the linear module and the detecting support, the automatic detection operation of the geometric dimension parameters of the cladding tube or the fuel rod is realized, and the measuring efficiency of the length and the outer diameter of the cladding tube or the fuel rod is effectively improved.
Description
Technical Field
The present invention relates to a cladding tube inspection apparatus, and in particular to a length and outer diameter measuring device for a nuclear fuel cladding tube or fuel rod.
Background
The detection of the nuclear fuel element cladding tube comprises the detection of the length, the outer diameter, the inner diameter, the wall thickness, the defects of the inner wall and the outer wall of the cladding tube and the like, and the lack of effective automatic means in the current detection is an important research direction for the technicians in the field. For example, in length and external diameter detection, only place the cladding pipe on testing platform, use visual measurement instrument or diameter measuring instrument to detect the external diameter at cladding pipe tip, the cladding pipe is generally longer in addition, and difficult instrument detection that utilizes, consequently current cladding pipe length and external diameter detect the operation comparatively loaded down with trivial details, and the testing result is accurate inadequately, and detection efficiency is lower, can't satisfy current industrial production needs, consequently need improve urgently.
SUMMERY OF THE UTILITY MODEL
In view of the above technical problems, the present invention provides a length and outer diameter measuring device for a nuclear fuel cladding tube or a fuel rod, which is efficient and accurate in detection and can meet the requirement of industrial detection, and is suitable for measuring and detecting the length values and the outer diameter values of a plurality of positions of nuclear fuel cladding tubes or fuel rods with different lengths.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a length and outer diameter measuring device for a nuclear fuel cladding tube or a fuel rod comprises a rotating wheel mechanism for bearing the nuclear fuel cladding tube or the fuel rod to be detected, a linear module arranged side by side with the rotating wheel mechanism, a detection bracket arranged on the movable end of the linear module, and an optical measuring assembly arranged on the detection bracket and used for detecting the length and the outer diameter of the nuclear fuel cladding tube or the fuel rod;
the rotating wheel mechanism comprises a bottom frame arranged side by side with the linear module, a servo motor and a speed reducer arranged at one end of the bottom frame through a motor mounting plate, a driving shaft connected with an output shaft of the speed reducer through a coupler, and a plurality of rotating supporting mechanisms which are arranged on the bottom frame at equal intervals and are in transmission connection with the driving shaft and used for bearing a nuclear fuel element cladding tube or a fuel rod.
Specifically, the rotary supporting mechanism comprises a supporting machine body connected with a bottom frame, a main transmission assembly arranged at the lower part of the supporting machine body and connected with a driving shaft, a secondary transmission assembly arranged in the supporting machine body and connected with the main transmission assembly in a transmission manner, and two rotating wheel assemblies arranged on the upper part of the supporting machine body side by side and connected with the secondary transmission assembly, wherein the rotating shaft of the two rotating wheel assemblies is axially in the same direction as the driving shaft, the outer edges of the two rotating wheel assemblies are close to a supporting part for supporting a nuclear fuel element cladding tube, and the driving shaft penetrates through the lower part of the supporting machine body.
Furthermore, cavities for accommodating the main transmission assembly and the auxiliary transmission assembly are arranged in the supporting machine body, and a sealing strip installation groove is formed in a cavity cover of each cavity, so that lubrication of gears of the transmission assemblies in the cavities is guaranteed.
Furthermore, the main transmission assembly comprises a transmission shaft sleeve which is sleeved on the driving shaft and penetrates through the supporting machine body, a main transmission gear which is sleeved on the transmission shaft sleeve and is positioned in the supporting machine body and is in transmission connection with the auxiliary transmission assembly, an elastic flap body which is formed at the end part of the transmission shaft sleeve by strip-shaped notches which are arranged on the side walls of the two ends of the transmission shaft sleeve along the axial direction, and a clasping ring which is sleeved at the end part of the transmission shaft sleeve and is matched with the elastic flap body.
Further, the auxiliary transmission assembly comprises an auxiliary transmission shaft arranged in the cavity of the supporting machine body, an auxiliary transmission gear arranged on the auxiliary transmission shaft and in transmission connection with the main transmission gear, a sub-transmission shaft arranged at the upper part in the cavity of the supporting machine body, and a sub-transmission gear arranged on the sub-transmission shaft and in transmission connection with the auxiliary transmission gear, wherein the sub-transmission shafts are arranged side by side, and one end of each of the two sub-transmission shafts extends out of the supporting machine body and is used for arranging the rotating wheel assembly.
Furthermore, the runner assembly includes a runner connector sleeved on the end of the sub-transmission shaft extending out of the supporting mechanism, a runner body sleeved on the runner connector, and a runner cushion layer made of polyurethane material and arranged on the rotating outer edge of the runner body, wherein the rotating outer edges of the runner body are close to each other.
Further, the optical measurement assembly comprises a telecentric parallel light source and a double telecentric lens industrial camera which are arranged on the detection bracket and are opposite in the forward direction, and the rotating wheel mechanism is positioned between the telecentric parallel light source and the double telecentric lens industrial camera.
Furthermore, a photoelectric switch is also arranged on the rotating wheel mechanism.
Furthermore, a grating ruler is further arranged on the linear module.
Compared with the prior art, the utility model has the following beneficial effects:
(1) the utility model adopts the rotating wheel mechanism as the support of the long cylindrical nuclear fuel element cladding tube or the fuel rod, and measures the outer diameter and the length of the cladding tube or the fuel rod through the optical measurement assembly arranged on the linear module and the detection bracket, thereby realizing the automatic detection operation of the parameters of the cladding tube or the fuel rod and effectively improving the measurement efficiency of the length and the outer diameter of the cladding tube or the fuel rod. The utility model has the advantages of ingenious design, simple structure and convenient use, and is suitable for measuring the length and the outer diameter of the nuclear fuel element cladding tube or the fuel rod.
(2) The rotary wheel mechanism provided by the utility model effectively supports the elongated nuclear fuel element cladding tube by using the plurality of rotary supporting mechanisms, and synchronously drives the rotary supporting mechanisms to rotate by using the servo motor and the driving shaft, so that the automatic axial rotation in cladding tube detection is effectively realized, the rotational stability of the cladding tube/fuel rod is ensured, and the length and diameter values in a plurality of different projection directions on the circumferential surface of the cladding tube/fuel rod can be measured, thereby improving the detection accuracy.
(3) The rotating wheel mechanism of the utility model skillfully designs the main transmission component which can be sleeved and clamped with the driving shaft, and improves the transmission efficiency of the driving shaft to the maximum extent on the basis of ensuring stable and reliable transmission.
(4) The optical measurement assembly provided by the utility model adopts a telecentric parallel light source to irradiate the cladding tube or the fuel rod, projects the outer diameter profile to the double telecentric lens industrial camera, realizes effective and accurate measurement of the outer diameter of the cladding tube or the fuel rod, simultaneously positions the end position image of the cladding tube or the fuel rod by the movement of the optical measurement assembly along the linear module, and effectively realizes the length measurement of the cladding tube or the fuel rod by combining the record of the grating ruler on the movement distance.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of an end of a rotating wheel mechanism according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a rotation support mechanism according to an embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of the inside of the rotary support mechanism in the embodiment of the present invention.
FIG. 5 is a schematic cross-sectional view of a portion of the main drive assembly of an embodiment of the present invention.
Fig. 6 is an exploded view of a portion of a wheel assembly in an embodiment of the present invention.
FIG. 7 is a schematic diagram of an optical measurement assembly according to an embodiment of the present invention.
Detailed Description
The present invention is further illustrated by the following figures and examples, which include, but are not limited to, the following examples.
Examples
As shown in fig. 1 to 7, the length and outer diameter measuring device for a nuclear fuel cladding or a fuel rod includes a rotating wheel mechanism for carrying the nuclear fuel cladding or the fuel rod to be detected, a linear module 11 disposed side by side with the rotating wheel mechanism, a detection bracket 12 disposed on a movable end of the linear module, and an optical measuring assembly 13 disposed on the detection bracket for detecting the length and outer diameter of the nuclear fuel cladding or the fuel rod.
The rotating wheel mechanism comprises a bottom frame 1 arranged side by side with the linear module, a servo motor 3 and a speed reducer 4 arranged at one end of the bottom frame through a motor mounting plate 2, a driving shaft 5 connected with an output shaft of the speed reducer through a coupler 6, and a plurality of rotating supporting mechanisms 100 which are arranged on the bottom frame at equal intervals and are in transmission connection with the driving shaft and used for bearing a nuclear fuel element cladding tube 10 or a fuel rod.
Specifically, the rotary support mechanism 100 includes a support body 101 having a bottom connected to a bottom frame and a lower portion through which a driving shaft passes, a main transmission assembly 110 disposed at the lower portion of the support body and connected to the driving shaft, a sub transmission assembly 120 disposed in the support body and connected to the main transmission assembly in a transmission manner, a chamber 102 disposed in the support body and used for accommodating the main transmission assembly and the sub transmission assembly, and two rotating wheel assemblies 130 disposed side by side at the upper portion of the support body and connected to the sub transmission assembly, wherein the rotating shaft of the two rotating wheel assemblies is axially aligned with the axial direction of the driving shaft, and the outer edges of the two rotating wheel assemblies are adjacent to a support portion 103 forming a support for a nuclear fuel element cladding tube, and the support portion is shaped like a V-groove.
Specifically, the main transmission assembly 110 includes a transmission shaft sleeve 111 disposed on the driving shaft and penetrating through the supporting body, a main transmission gear 112 disposed on the transmission shaft sleeve and located in the supporting body and connected to the driven transmission assembly in a transmission manner, an elastic flap 113 formed at an end of the transmission shaft sleeve by a strip notch axially opened on side walls at two ends of the transmission shaft sleeve, and a clasping ring 114 disposed at an end of the transmission shaft sleeve and matched with the elastic flap. The secondary transmission assembly 120 includes a secondary transmission shaft 121 disposed in the cavity of the support body, a secondary transmission gear 122 disposed on the secondary transmission shaft and in transmission connection with the primary transmission gear, a sub-transmission shaft 123 disposed at an upper portion in the cavity of the support body, and a sub-transmission gear 124 disposed on the sub-transmission shaft and in transmission connection with the secondary transmission gear, wherein the sub-transmission shafts are disposed side by side, and one end of each of the two sub-transmission shafts extends out of the support body for mounting the rotating wheel assembly. The rotating wheel assembly 130 comprises a rotating wheel connector 131, a rotating wheel body 132 and a rotating wheel cushion layer 133, wherein the rotating wheel connector 131 is sleeved at the end part of the sub-transmission shaft extending out of the supporting mechanism, the rotating wheel body is sleeved on the rotating wheel connector, the rotating wheel cushion layer 133 is made of polyurethane materials and is arranged on the rotating outer edge of the rotating wheel body, and the rotating outer edges of the rotating wheel body are close to each other. In the main transmission assembly, the auxiliary transmission assembly and the rotating wheel assembly, the shaft member, the shaft sleeve member, the gear member and the support body can be mounted and connected in a conventional mounting manner, for example, by conventional components such as a bearing, a bearing cover and a key, which is not described again in this embodiment.
The optical measurement assembly 13 comprises a telecentric parallel light source 15 and a double telecentric lens industrial camera 14 which are arranged on the detection bracket and are opposite in the forward direction, and the rotating wheel mechanism is positioned between the telecentric parallel light source and the double telecentric lens industrial camera. And the rotating wheel mechanism is also provided with a photoelectric switch. And a grating ruler is further arranged on the linear module.
When the device is used, aiming at length measurement, when a workpiece enters a length size measurement module to collect an image area, the measurement module has a trigger signal to start to collect length data, a telecentric parallel light source irradiates to a tube, the outer diameter profile of the tube is projected to a double telecentric lens industrial camera, a measurement device is arranged on a mobile platform, a grating ruler is arranged on the whole moving stroke of the mobile platform to record each position, two ends of a single tube are respectively provided with a set of measurement device to finish the collection of the outer diameter of the tube with an end face, the grating ruler is combined to record the physical position relation of the measurement devices at two ends and the two end faces of the tube, and the product length measurement is realized by an image processing algorithm. After the length measurement is finished, according to the measuring result, dividing 4 axial positions of the pipe equally, the control system automatically moves the measuring device to the equally divided positions, the rotating assembly rotates for 4 circumferential equally divided angles of each equally divided position, the outer diameter profile is measured respectively, and finally 16 outer diameter detection values are output.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, but all changes that can be made by applying the principles of the present invention and performing non-inventive work on the basis of the principles shall fall within the scope of the present invention.
Claims (9)
1. A length and outer diameter measuring device for a nuclear fuel cladding tube or a fuel rod is characterized by comprising a rotating wheel mechanism for bearing the nuclear fuel cladding tube or the fuel rod to be detected, a linear module arranged side by side with the rotating wheel mechanism, a detection bracket arranged on the movable end of the linear module, and an optical measuring assembly arranged on the detection bracket and used for detecting the length and the outer diameter of the nuclear fuel cladding tube or the fuel rod;
the rotating wheel mechanism comprises a bottom frame arranged side by side with the linear module, a servo motor and a speed reducer arranged at one end of the bottom frame through a motor mounting plate, a driving shaft connected with an output shaft of the speed reducer through a coupler, and a plurality of rotating supporting mechanisms arranged on the bottom frame at intervals and in transmission connection with the driving shaft and used for bearing a nuclear fuel element cladding tube or a fuel rod.
2. The length and outer diameter measuring device for a nuclear fuel cladding tube or fuel rod according to claim 1, wherein the rotation support mechanism comprises a support body connected to the underframe, a primary drive assembly disposed at a lower portion of the support body and connected to the driving shaft, a secondary drive assembly disposed in the support body and connected to the primary drive assembly in a driving manner, and two wheel assemblies disposed side by side at an upper portion of the support body and connected to the secondary drive assembly, wherein a rotation axis of the two wheel assemblies is axially aligned with an axial direction of the driving shaft, and outer edges of the two wheel assemblies are adjacent to a support portion forming a support for the nuclear fuel element cladding tube, and the driving shaft is disposed through the lower portion of the support body.
3. The length and outer diameter measuring device for a nuclear fuel cladding tube or fuel rod according to claim 2, wherein a cavity for placing a master transmission assembly and a slave transmission assembly is provided in the support body.
4. The length and outer diameter measuring device for a nuclear fuel cladding tube or fuel rod as claimed in claim 3, wherein the main transmission assembly comprises a transmission sleeve disposed on the driving shaft and penetrating through the support body, a main transmission gear disposed on the transmission sleeve and located in the support body and in transmission connection with the sub transmission assembly, a flexible flap body formed at an end of the transmission sleeve by a strip-shaped notch axially opened on a side wall of both ends of the transmission sleeve, and a clasping ring disposed at an end of the transmission sleeve and matched with the flexible flap body.
5. The length and outer diameter measuring device for a nuclear fuel cladding tube or fuel rod according to claim 4, wherein the slave transmission assembly includes a slave transmission shaft disposed in the cavity of the support body, a slave transmission gear disposed on the slave transmission shaft and drivingly connected with the master transmission gear, a sub transmission shaft disposed at an upper portion in the cavity of the support body, and a sub transmission gear disposed on the sub transmission shaft and drivingly connected with the slave transmission gear, wherein the sub transmission shafts are two disposed side by side, and one end of each of the two sub transmission shafts protrudes out of the support body for mounting the rotating wheel assembly.
6. The length and outer diameter measuring device for a nuclear fuel cladding tube or fuel rod according to claim 5, wherein the rotating wheel assembly comprises a rotating wheel connector sleeved on the end of the sub-transmission shaft extending out of the supporting mechanism, a rotating wheel body sleeved on the rotating wheel connector, and a rotating wheel cushion layer made of polyurethane material arranged on the rotating outer edge of the rotating wheel body, wherein the rotating outer edges of the two rotating wheel bodies are close to each other.
7. The length and outer diameter measuring device for a nuclear fuel cladding tube or fuel rod according to any one of claims 1 to 6, wherein the optical measuring assembly comprises a telecentric parallel light source and a double telecentric lens industrial camera, both disposed on the inspection bracket and in a forward direction, and the rotating wheel mechanism is located between the telecentric parallel light source and the double telecentric lens industrial camera.
8. A length and outer diameter measuring device for a nuclear fuel cladding tube or fuel rod as claimed in claim 7, wherein an electro-optical switch is further provided on the rotating wheel mechanism.
9. A length and outer diameter measuring device for a nuclear fuel cladding tube or fuel rod as claimed in claim 7, wherein a grating ruler is further provided on the linear module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122457339.2U CN216049686U (en) | 2021-10-13 | 2021-10-13 | Length and outer diameter measuring device for nuclear fuel cladding tube or fuel rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122457339.2U CN216049686U (en) | 2021-10-13 | 2021-10-13 | Length and outer diameter measuring device for nuclear fuel cladding tube or fuel rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216049686U true CN216049686U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122457339.2U Active CN216049686U (en) | 2021-10-13 | 2021-10-13 | Length and outer diameter measuring device for nuclear fuel cladding tube or fuel rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216049686U (en) |
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2021
- 2021-10-13 CN CN202122457339.2U patent/CN216049686U/en active Active
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