CN211669985U - Fuel rod tension measuring mechanism and fuel rod traction device - Google Patents
Fuel rod tension measuring mechanism and fuel rod traction device Download PDFInfo
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- CN211669985U CN211669985U CN202020003130.1U CN202020003130U CN211669985U CN 211669985 U CN211669985 U CN 211669985U CN 202020003130 U CN202020003130 U CN 202020003130U CN 211669985 U CN211669985 U CN 211669985U
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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 provides a fuel rod tension measuring mechanism and fuel rod tractive device, wherein, tension measuring mechanism includes: the pull plate assembly is detachably connected with the pull rod assembly for driving the fuel rods and is used for transmitting the driving force of the driving mechanism to the pull rod assembly so as to drive the fuel rods to enter the grillwork; and the sensor assembly is used for acquiring the force borne by the pulling plate assembly when the pulling plate assembly is stressed and converting the force into an electric signal to be output. The tension measuring mechanism of the utility model obtains the force born by the pulling plate component through the sensor component, then indirectly obtains the tension received by the fuel rod in the process of entering the grillwork, and then can obtain the problem of the size of the grillwork or the outer diameter of the fuel rod through analyzing the tension condition received by the fuel rod, thereby better monitoring the production link and controlling the product quality of the fuel component; the traction device can not only pull the fuel rods into the assembly grillwork, but also measure the tensile force applied to the fuel rods in the process of entering the assembly grillwork in real time.
Description
Technical Field
The utility model relates to a nuclear fuel technical field, concretely relates to fuel rod tension measuring mechanism to and fuel rod tractive device.
Background
With the rapid development of nuclear power industry, the demand of China on nuclear fuel assemblies is continuously increased, and the assembly of fuel rods on a production line has very important influence on the production efficiency, the quality and the like of the fuel assemblies.
One of the main processes in the production of fuel assemblies is the pulling of fuel rods into the assembly skeleton. The assembly framework is formed by spot welding of a plurality of grids, guide tubes and the like, the fuel rods penetrate through corresponding square fuel rod hole sites on the grids one by one under the action of tensile force, the hole sites are formed by strips with springs, the springs on the strips can tightly clamp the fuel rods, and in the process, the spring force on the strips needs to be overcome when the fuel rods enter the grids. The problem with the grid size or the outer diameter of the fuel rods is indicated when the fuel rods are subjected to too much or too little tension, in which case the fuel assembly produced may be problematic.
However, the related art only considers how the fuel rods are pulled into the grids, and lacks a solution to monitor the tension experienced by the fuel rods during the pulling of the fuel rods into the grids.
SUMMERY OF THE UTILITY MODEL
The present invention has been made to solve, at least in part, the technical problems occurring in the prior art.
Solve the utility model discloses the technical scheme that technical problem adopted is:
the utility model provides a fuel rod tension measuring mechanism, it includes:
the pull plate assembly is detachably connected with the pull rod assembly for driving the fuel rods and is used for transmitting the driving force of the driving mechanism to the pull rod assembly so as to drive the fuel rods to enter the grillwork; and the number of the first and second groups,
and the sensor assembly is used for acquiring the force borne by the pulling plate assembly when the pulling plate assembly is stressed and converting the force into an electric signal to be output.
Optionally, the pulling plate assembly comprises:
the bottom of the pull plate is provided with at least one protrusion, the pull plate is positioned above the pull rod assembly, and the pull rod assembly is provided with at least one groove matched with the protrusion;
a shaft horizontally passing through the lower portion of the tie plate in a direction perpendicular to the fuel rod; and the number of the first and second groups,
the bearing is sleeved on the shaft, so that the shaft is rotatably connected with the lower part of the pulling plate through the bearing;
wherein the sensor assembly is disposed proximate to a side of the pull plate and parallel to the shaft.
Optionally, in the axial direction of the fuel rod, the upper part and the lower part of the pulling plate extend in opposite directions;
the tension measuring mechanism further comprises: and the balance assembly is connected with the side surface of the upper part of the pulling plate and is used for balancing the gravity of the upper part of the pulling plate.
Optionally, the balancing assembly comprises:
one end of the connecting piece is connected with the side surface of the upper part of the pulling plate which is relatively back in the extending direction;
one end of the tension spring is connected with the other end of the connecting piece;
one end of the connecting rod is connected with the other end of the tension spring; and the number of the first and second groups,
the top end of the supporting plate is connected with the other end of the connecting rod, and the bottom end of the supporting plate is connected with the lower portion of the pulling plate.
Optionally, the balancing assembly further comprises: adjusting the nut;
the connecting rod is provided with threads, and the other end of the connecting rod penetrates through the upper end of the supporting plate and then is connected with the adjusting nut through the threads.
Optionally, the sensor assembly comprises:
a lower base plate;
a plurality of pressure sensors horizontally disposed side by side on the lower shim plate and arranged in a direction perpendicular to an axial direction of the fuel rods; and the number of the first and second groups,
and the upper end cover covers the pressure sensors and is detachably connected with the lower cushion plate.
Optionally, a plurality of fastening bolts penetrating through each pressure sensor are respectively arranged between the upper end cover and the lower backing plate at positions corresponding to each pressure sensor.
The utility model also provides a fuel rod tractive device, it includes: the fuel rod tension measuring mechanism, the slide carriage and the driving mechanism are arranged on the support; the slide carriage is respectively detachably connected with a pull plate assembly and a sensor assembly of the tension measuring mechanism; the driving mechanism is connected with the slide carriage and used for driving the fuel rods to enter the grillwork sequentially through the slide carriage, the pull plate assembly and the pull rod assembly.
Has the advantages that:
the fuel rod tension measuring mechanism of the utility model acquires the force born by the pulling plate component through the sensor component, and then indirectly acquires the tension received by the fuel rod in the process of entering the grillwork, so that the problems of the size of the grillwork or the outer diameter of the fuel rod can be known by analyzing the tension condition received by the fuel rod subsequently, thereby better monitoring the production link and controlling the product quality of the fuel component; fuel rod tractive device both can stimulate the fuel rod and get into the subassembly grillwork, can get into the pulling force that subassembly grillwork in-process fuel rod received again by real-time measurement.
Drawings
Fig. 1 is a schematic structural diagram of a fuel rod pulling device using a fuel rod tension measuring mechanism according to an embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of the sensor assembly of FIG. 1;
fig. 3 is a left side view of the sensor assembly of fig. 1.
In the figure: 1-a support plate; 2-adjusting the nut; 3-a connecting rod; 4-a tension spring; 5-a connector; 6-pulling a plate; 7-slide carriage; 8-a tie rod assembly; 9-a sensor assembly; 10-axis; 11-a bearing; 12-a groove; 13-upper end cap; 14-a fastening bolt; 15-lower backing plate; 16-a miniature pressure sensor; 17-fixing the bolt; 18-lower fixing bolt.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.
In the following description, numerous specific details are set forth to provide an understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described, and the scope of the present invention is not limited by the specific embodiments disclosed below.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by various orientation terms is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
Lack the scheme of the tensile force that the in-process monitoring fuel rod receives at the pulling fuel rod entering screen work among the correlation technique, the embodiment of the utility model provides a fuel rod tension measurement mechanism for the tensile force that the fuel rod received is measured in real time to the nuclear fuel assembly assembling-process.
As shown in fig. 1 to 3, the tension measuring mechanism includes: a pull plate assembly and a sensor assembly 9.
The tie plate assembly is detachably connected with a tie rod assembly 8 for driving the fuel rods, and is used for transmitting the driving force of the driving mechanism to the tie rod assembly 8 so as to drive the fuel rods to enter the grids. The sensor assembly 9 is used for acquiring the force borne by the pulling plate assembly when the pulling plate assembly is stressed, and converting the force into an electric signal to be output.
In this embodiment, acquire the power that the arm-tie subassembly bore through the sensor subassembly, then indirectly acquire the pulling force that the fuel rod got into the grillwork in-process and received, then the pulling force condition that follow-up accessible analysis fuel rod received learns the problem that grillwork size or fuel rod external diameter exist to can monitor the production link better, control fuel assembly's product quality.
As shown in fig. 1, the pulling plate assembly includes: a pulling plate 6, a shaft 10 and a bearing 11. The pulling plate 6 can be made of stainless steel.
The bottom of the pulling plate 6 is provided with at least one protrusion, the pulling plate 6 is positioned on the pull rod assembly 8, and the pull rod assembly 8 is provided with at least one groove 12 matched with the protrusion. In this embodiment, the protrusions are matched with the grooves 12, that is, the protrusions and the grooves 12 are equal in number and correspond in position, and each protrusion is matched with the shape and size of the corresponding groove 12.
The shaft 10 horizontally passes through the lower portion of the tie plate 6 in a direction perpendicular to the fuel rods. The bearing 11 is fitted over the shaft 10, so that the shaft 10 is rotatably connected to the lower end 6 of the pulling plate via the bearing 11. The sensor assembly 9 is disposed close to the side of the pulling plate 6 and parallel to the axis 10.
In this embodiment, because the bottom of the pulling plate 6 is provided with the protrusion, the groove 12 is formed in the pull rod assembly 8, the protrusion and the groove 12 are clamped to realize the connection between the pulling plate 6 and the pull rod assembly 8, the pulling plate 6 transmits the driving force to the pulling plate assembly 8, the lower part of the pulling plate 6 rotates around the shaft 10 due to the stress, the side surface of the pulling plate 6 contacts with the sensor assembly 9 arranged close to the side surface of the pulling plate 6, the force borne by the pulling plate 6 is transmitted to the sensor assembly 9, and the sensor assembly 9 is converted into an electric signal to be output.
Although the sensor assembly 9 is disposed on the right side of the pulling plate 6 in fig. 1, in practical applications, the sensor assembly 9 may be disposed on the left side of the pulling plate 6, because the pulling plate 6 can transmit the force received by the pulling plate to the sensor assembly 9 located on the left side of the pulling plate when rotating.
In this embodiment, the sensor assembly 9 may be connected to an upper computer, and outputs an electrical signal to the upper computer; the host computer analyzes the received electric signal, and then obtains the tension condition received by the fuel rod in the process of entering the grid, and further analyzes the size of the grid or the outer diameter of the fuel rod.
Further, as shown in fig. 1, when the upper portion and the lower portion of the tie plate 6 extend in opposite directions in the axial direction of the fuel rod, the centers of gravity of the upper portion and the lower portion of the tie plate 6 are not on a vertical line, and the tie plate is light, for this reason, in this embodiment, the tension measuring mechanism further includes: and the balance assembly is connected with the side surface of the upper part of the pulling plate 6 and is used for balancing the self gravity of the upper part of the pulling plate 6.
In this embodiment, the pulling plate 6 is designed into a special shape and is provided with a balance assembly, so that the flexibility of the pulling plate can be increased, and the pulling plate is prevented from being stuck, so that the stress can be more accurately transmitted to the sensor assembly 9 when the pulling plate 6 is stressed.
Specifically, as shown in fig. 1, the balancing assembly includes: connecting piece 5, extension spring 4, connecting rod 3 and backup pad 1.
Wherein, one end of the connecting piece 5 is connected with the side surface (namely the left side surface of the upper part of the pulling plate 6 in figure 1) which is relatively back in the extending direction of the upper part of the pulling plate 6; one end of the tension spring 4 is connected with the other end of the connecting piece 5; one end of the connecting rod 3 is connected with the other end of the tension spring 4; the top end of the supporting plate 1 is connected with the other end of the connecting rod 3, and the bottom end of the supporting plate 1 is connected with the lower part of the pulling plate 6.
In some embodiments, as shown in fig. 1, the balancing assembly further comprises: the nut 2 is adjusted.
The connecting rod 3 is provided with threads, and the other end of the connecting rod passes through the upper end of the supporting plate 1 and then is in threaded connection with the adjusting nut 2, so that the length of the tension spring 4 can be adjusted by rotating the adjusting nut 2.
As shown in fig. 2 and 3, the sensor assembly 9 includes: a lower backing plate 15, a plurality of pressure sensors and an upper end cap 13. In this embodiment, pressure sensor adopts current miniature pressure sensor of standard 16, and it has advantages such as the precision is high, good reproducibility, stability and interference killing feature are strong, of course, also can adopt other types of pressure sensor, the utility model discloses do not do the restriction to this. As for the number of the micro pressure sensors 16, it can be determined by those skilled in the art according to the actual situation, and although seventeen micro pressure sensors are shown in fig. 3, the present invention is not limited thereto, and a greater or lesser number of micro pressure sensors should be within the scope of the present invention, for example, the number of the micro pressure sensors may be 10-20.
The sensor assembly 9 is installed by a special design, wherein each miniature pressure sensor 16 is horizontally arranged on the lower backing plate 15 side by side and is arranged along the direction vertical to the axial direction of the fuel rod; the upper end cap 13 covers each micro pressure sensor 16 and is detachably connected to the lower pad 15.
In this embodiment, the lower backing plate 15 is fixedly connected to the upper end cap 13 through the lower fixing bolt 18, so that the micro pressure sensors 16 located therebetween are fixed in the vertical direction, and are convenient to mount and dismount.
Further, as shown in fig. 2, a plurality of fastening bolts 14 penetrating through each of the micro pressure sensors 16 are respectively provided between the upper end cap 13 and the lower shim plate 15 at positions corresponding to each of the micro pressure sensors 16, so that the fixation of each of the micro pressure sensors 16 in the horizontal direction (i.e., the axial direction of the fuel rod) is achieved by the fastening bolts 14, facilitating the mounting and dismounting.
In this embodiment, the fixing of the micro pressure sensor 16 in the vertical direction and the horizontal direction is realized by providing the lower fixing bolt 18 and the fastening bolt 14, which is convenient for fixing, dismounting and daily maintenance and repair of the position of the sensor assembly 9.
The embodiment of the utility model provides an adopt aforementioned fuel rod tension measuring mechanism's fuel rod tractive device is still provided for at nuclear fuel assembly equipment in-process, both can stimulate the fuel rod and get into the subassembly grillwork, the pulling force that can real-time measurement get into subassembly grillwork in-process fuel rod and receive again.
As shown in fig. 1 to 3, the fuel rod drawing device includes: a fuel rod tension measuring mechanism, a slide carriage 7 and a driving mechanism (not shown in the figure).
Wherein the slide carriage 7 is detachably connected with a pulling plate component and a sensor component 9 of the pulling force measuring mechanism respectively.
Specifically, as shown in fig. 3, the sensor assembly 9 is disposed on the carriage 7 and is fixedly coupled to the carriage 7 by an upper fixing bolt 17. The lower part of the pulling plate 6 is arranged on the slide carriage 7 through a shaft 10 and a bearing 11, and the shaft 10 is fixed on the slide carriage 7; the upper part of the pulling plate 6 is connected with a tension spring 4 through a connecting piece 5, and the tension spring 4 is connected with a supporting plate 1 fixed on a slide carriage 7 through a connecting rod 3.
The driving mechanism is arranged at the bottom of the slide carriage 7 and connected with the slide carriage 7 and used for driving the slide carriage 7 to do linear motion, so that the fuel rods are driven to enter the grillwork through the slide carriage 7, the pull plate assembly and the pull rod assembly 8 in sequence.
The working principle of the fuel rod drawing device according to the present embodiment is described below with reference to fig. 1:
the driving mechanism drives the slide carriage 7 to do linear motion, then the slide carriage 7 drives the pulling plate 6, the pulling plate 6 drives the pull rod assembly 8, and the pull rod assembly 8 drives the fuel rods to enter the assembly grillwork; in the process, the pull rod assembly 8 and the fuel rods are pulled, so that the bottom of the pull plate 6 is raised and stressed, the miniature pressure sensor 16 is stressed, the miniature pressure sensor 16 converts the stress of the fuel rods into a measurable electric signal and sends the measurable electric signal to the upper computer, and the upper computer performs data processing on the measurable electric signal to obtain a pulling force value.
To sum up, fuel rod tractive device can stimulate the fuel rod and get into the subassembly screen work at nuclear fuel assembly assembling process, simultaneously, utilizes the pulling force that fuel rod tension measuring mechanism can receive at whole assembly in-process real-time measurement fuel rod.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (8)
1. A fuel rod tension measuring mechanism, comprising:
the pull plate assembly is detachably connected with the pull rod assembly for driving the fuel rods and is used for transmitting the driving force of the driving mechanism to the pull rod assembly so as to drive the fuel rods to enter the grillwork; and the number of the first and second groups,
and the sensor assembly is used for acquiring the force borne by the pulling plate assembly when the pulling plate assembly is stressed and converting the force into an electric signal to be output.
2. The tension measuring mechanism of claim 1, wherein the pull plate assembly comprises:
the bottom of the pull plate is provided with at least one protrusion, the pull plate is positioned above the pull rod assembly, and the pull rod assembly is provided with at least one groove matched with the protrusion;
a shaft horizontally passing through the lower portion of the tie plate in a direction perpendicular to the fuel rod; and the number of the first and second groups,
the bearing is sleeved on the shaft, so that the shaft is rotatably connected with the lower part of the pulling plate through the bearing;
wherein the sensor assembly is disposed proximate to a side of the pull plate and parallel to the shaft.
3. The tension measuring mechanism according to claim 2, wherein the pull plate has upper and lower portions extending in opposite directions in the axial direction of the fuel rod;
the tension measuring mechanism further comprises: and the balance assembly is connected with the side surface of the upper part of the pulling plate and is used for balancing the gravity of the upper part of the pulling plate.
4. The tension measuring mechanism of claim 3, wherein the counterbalance assembly comprises:
one end of the connecting piece is connected with the side surface of the upper part of the pulling plate which is relatively back in the extending direction;
one end of the tension spring is connected with the other end of the connecting piece;
one end of the connecting rod is connected with the other end of the tension spring; and the number of the first and second groups,
the top end of the supporting plate is connected with the other end of the connecting rod, and the bottom end of the supporting plate is connected with the lower portion of the pulling plate.
5. The tension measuring mechanism of claim 4, wherein the counterbalance assembly further comprises: adjusting the nut;
the connecting rod is provided with threads, and the other end of the connecting rod penetrates through the upper end of the supporting plate and then is connected with the adjusting nut through the threads.
6. Tension measuring mechanism according to any of claims 1-5, wherein the sensor assembly comprises:
a lower base plate;
a plurality of pressure sensors horizontally disposed side by side on the lower shim plate and arranged in a direction perpendicular to an axial direction of the fuel rods; and the number of the first and second groups,
and the upper end cover covers the pressure sensors and is detachably connected with the lower cushion plate.
7. The tension measuring mechanism according to claim 6, wherein a plurality of fastening bolts penetrating through the respective pressure sensors are respectively provided between the upper cover and the lower bolster at positions corresponding to the respective pressure sensors.
8. A fuel rod puller device, comprising: the fuel rod tension measuring mechanism of any one of claims 1 to 7, a slide carriage and a drive mechanism; the slide carriage is respectively detachably connected with a pull plate assembly and a sensor assembly of the tension measuring mechanism; the driving mechanism is connected with the slide carriage and used for driving the fuel rods to enter the grillwork sequentially through the slide carriage, the pull plate assembly and the pull rod assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020003130.1U CN211669985U (en) | 2020-01-02 | 2020-01-02 | Fuel rod tension measuring mechanism and fuel rod traction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020003130.1U CN211669985U (en) | 2020-01-02 | 2020-01-02 | Fuel rod tension measuring mechanism and fuel rod traction device |
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| Publication Number | Publication Date |
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| CN211669985U true CN211669985U (en) | 2020-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020003130.1U Active CN211669985U (en) | 2020-01-02 | 2020-01-02 | Fuel rod tension measuring mechanism and fuel rod traction device |
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| CN (1) | CN211669985U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382416A (en) * | 2020-11-04 | 2021-02-19 | 北京新龙立自动化设备有限公司 | Slide carriage mechanism and rod pulling machine with same |
-
2020
- 2020-01-02 CN CN202020003130.1U patent/CN211669985U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382416A (en) * | 2020-11-04 | 2021-02-19 | 北京新龙立自动化设备有限公司 | Slide carriage mechanism and rod pulling machine with same |
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