CN218496370U - Underwater forced vibration test device for fuel assembly - Google Patents
Underwater forced vibration test device for fuel assembly Download PDFInfo
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- CN218496370U CN218496370U CN202222872652.7U CN202222872652U CN218496370U CN 218496370 U CN218496370 U CN 218496370U CN 202222872652 U CN202222872652 U CN 202222872652U CN 218496370 U CN218496370 U CN 218496370U
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- fuel assembly
- sealing
- underwater
- joint
- pagoda joint
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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 belongs to the technical field of nuclear technology, in particular to a fuel assembly underwater forced vibration test device, which comprises a top rod, wherein the tail end of the top rod is connected with an excitation device through an internal thread joint, and the head part of the top rod passes through a sealing pagoda joint and is connected with a fuel assembly through threads; one end of the sealing pagoda joint close to the fuel assembly is welded with the base, and the sealing pagoda joint is fixed on the fuel assembly through the base; the middle part of the ejector rod is sleeved with an ejector rod pagoda joint, and the ejector rod pagoda joint and the sealing pagoda joint are connected through a steel wire hose. After all the parts are fixed, the coaxiality needs to be ensured, so that the transmission of the exciting force is stable in the exciting process. By using the structure, the sealing structure has high sealing performance, ensures pressure sealing of at least 0.5MPa, and can conveniently and effectively transmit external excitation force to the fuel assembly in the flow channel and excite the fuel assembly.
Description
Technical Field
The utility model relates to a nuclear technology field, concretely relates to fuel assembly is forced vibration test device under water.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The fuel assembly is a basic component unit of a reactor core of a reactor system, and when a modal test method is used for carrying out forced vibration characteristic analysis on the underwater fuel assembly in the closed container, the fuel assembly is excited, and meanwhile, the response of the excitation is collected and processed. Besides arranging a measuring sensor at a proper position, a device capable of exciting the fuel assembly needs to be designed, the device can excite the fuel assembly in a flow channel, meanwhile, the device needs to have a waterproof sealing function, an O-shaped ring is mostly used as a dynamic sealing boundary in the past, and the O-shaped ring is easily abraded in a long-time friction process in the sealing mode, so that the test is forced to pause.
SUMMERY OF THE UTILITY MODEL
For overcoming the defects of the prior art, the utility model provides a fuel assembly underwater forced vibration test device.
In order to achieve the above object, one or more embodiments of the present invention provide the following technical solutions:
the utility model provides a fuel assembly underwater forced vibration test device, which comprises a top rod, wherein the tail end of the top rod is connected with an excitation device through an internal thread joint, and the head part of the top rod passes through a sealed pagoda joint and is connected with the fuel assembly through threads;
one end of the sealing pagoda joint close to the fuel assembly is welded with the base, and the sealing pagoda joint is fixed on the fuel assembly through the base;
the middle part of the ejector rod is sleeved with an ejector rod pagoda joint, and the ejector rod pagoda joint and the sealing pagoda joint are connected through a steel wire hose.
Furthermore, a top rod pagoda joint sleeved in the middle of the top rod is welded on the top rod.
Furthermore, one side of the sealing pagoda joint base close to the flow channel wall is provided with a circle of circular groove, and an O-shaped rubber ring is arranged in the groove.
Further, be equipped with the fuel assembly clamp on the fuel assembly, the welding has the nut on the side that the fuel assembly clamp just is just to the ejector pin, ejector pin head and nut threaded connection.
Further, the nut and the sealing pagoda joint are concentrically arranged.
Further, the head of the ejector rod is in threaded connection with an M10 nut, and the M10 nut is clamped with a nut on the fuel assembly clamp.
Furthermore, throat hoops are respectively arranged on the ejector rod pagoda joint and the sealing pagoda joint to fix the steel wire hoses.
Further, the total number of the hose clamps is two or more.
Furthermore, the ejector rod is perpendicular to the vibration excitation device and the fuel assembly clamp nut.
Furthermore, the sealing pagoda joint and the ejector rod pagoda joint are the same in model and size.
The above one or more technical solutions have the following beneficial effects:
an object of the utility model is to solve above-mentioned problem and provide a fuel assembly forces vibration test device under water, the device has waterproof sealing's function, guarantees 0.5 MPa's pressure seal at least, can accurately reach the fuel assembly of inside again fast with the exciting force that excitation device provided simultaneously, and excitation device can not influence fuel assembly's vibration characteristic. The device is convenient for install and dismantle, uses the wire hose as sealed boundary, has long service life, is convenient for change advantage such as.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
FIG. 1 is a schematic structural diagram of an underwater forced vibration test device for a fuel assembly in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a carrier rod according to embodiment 1 of the present invention;
fig. 3 (a) and 3 (b) are schematic structural views of a sealing pagoda joint according to embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a fuel assembly clip according to embodiment 1 of the present invention.
In the figure, 1, a push rod, 2, an internal thread joint, 3, a steel wire hose, 4, a sealing pagoda head, 5, a fuel assembly hoop, 6, a push rod pagoda joint, 7, a throat hoop, 8, M10 nuts, 9 and fuel assembly hoop nuts.
Detailed Description
The present disclosure is further illustrated by the following examples in conjunction with the accompanying drawings.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example one
As shown in fig. 1 to 4, the utility model provides an underwater forced vibration test device for fuel assemblies, which comprises a top rod 1, an internal thread joint 2, a steel wire hose 3, a sealing pagoda joint 4, a fuel assembly hoop 5, a top rod pagoda joint 6 and a throat hoop 7;
the tail end of the ejector rod is connected with an excitation device through an internal thread joint 2, the head part of the ejector rod penetrates through a sealing pagoda joint 4 to be in threaded connection with a fuel assembly, one end, close to the fuel assembly, of the sealing pagoda joint 4 is welded with a base, and the sealing pagoda joint is fixed on the fuel assembly through the base;
the middle part of the ejector rod is sleeved with an ejector rod pagoda joint 6, and the ejector rod pagoda joint 6 is connected with the sealing pagoda joint 4 through a steel wire hose 3; a top rod pagoda joint 6 sleeved in the middle of the top rod needs to be welded and fixed on the top rod 1;
the female adapter 2 needs to be sleeved and installed on the ejector rod 1, and since the tail end (left end in the drawing) of the ejector rod 1 is provided with a bulge, the ejector rod 1 needs to be cut off first, then the female adapter 2 is sleeved on the ejector rod 1, and finally the cut-off part is welded. In the welding process, the perpendicularity and the concentricity of the two sections of ejector rods 1 need to be ensured, and the tail ends of the ejector rods 1 are fixedly connected with an excitation device through the internal thread joints 2.
Set up the bolt hole on the base of sealed pagoda joint 4, the cooperation through bolt hole on bolt and the base will be sealed pagoda joint 4 and fixed with fuel assembly runner wall, and there is the circular recess of round one side that runner wall is pressed close to sealed 4 bases of pagoda head, can place O type rubber circle in the recess for prevent the liquid seepage, ensure the fixed seal of sealed pagoda head and runner.
The sealed pagoda joint 4 is consistent with the pagoda joint 6 sleeved in the middle of the ejector rod in model and size, and is characterized in that a base is welded at the bottom of the sealed pagoda joint, and four mounting holes are formed in the periphery of the base; the inside through-hole that is of sealed precious tower head makes things convenient for the reciprocating motion of ejector pin.
Be equipped with fuel assembly clamp 5 on the fuel assembly for firmly cramp fuel assembly, fuel assembly clamp 5 has the nut just to welding on the side of ejector pin 1, is convenient for let ejector pin 1 screw fixedly, and the nut needs to set up with sealed precious tower head 4 concentricity, prevents to influence measuring at excitation in-process ejector pin 1 and the contact of sealed precious tower head 4.
The head of the ejector rod is provided with threads, the M10 nut is firstly fixed on the ejector rod 1 through the threads, and after the ejector rod 1 is fixed with the fuel assembly clamp nut 9, the M10 nut rotates towards the fuel assembly side to enable the M10 nut and the nut on the fuel assembly clamp 5 to be clamped tightly.
The steel wire hose needs to be in interference fit with two pagoda connectors, two ends of the steel wire hose 3 are sleeved on the ejector rob tower head 6 and the sealing rob tower head 4 respectively, and then throat hoops need to be used for further fixing, if one throat hoop cannot clamp the pagoda connector, the number of the throat hoops on the pagoda connectors can be increased properly, and the total number of the throat hoops is two or more; the pagoda joint can effectively prevent the failure of the pressure boundary in the test process.
The vibration exciter, the ejector rod 1 and the fuel assembly clamp nut 9 must be arranged vertically, so that the fuel assembly is prevented from being subjected to transverse force during vibration excitation of the vibration exciter, and the measurement of the vibration response of the sensor to the fuel assembly is prevented from being influenced.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. The underwater forced vibration test device for the fuel assembly is characterized by comprising a push rod, wherein the tail end of the push rod is connected with a vibration excitation device through an internal thread joint, and the head part of the push rod penetrates through a sealing pagoda joint to be in threaded connection with the fuel assembly;
one end of the sealing pagoda joint close to the fuel assembly is welded with the base, and the sealing pagoda joint is fixed on the fuel assembly through the base;
the middle part of the ejector rod is sleeved with an ejector rod pagoda joint, and the ejector rod pagoda joint and the sealing pagoda joint are connected through a steel wire hose.
2. The underwater forced vibration test device for the fuel assembly as claimed in claim 1, wherein a top rod pagoda joint sleeved in the middle of the top rod is welded on the top rod.
3. The underwater forced vibration test device for the fuel assembly as claimed in claim 1, wherein a circle of circular groove is formed in one side, close to the wall of the flow channel, of the sealing cone joint base, and an O-shaped rubber ring is placed in the groove.
4. The underwater forced vibration test device for the fuel assembly as recited in claim 1, wherein the fuel assembly is provided with a fuel assembly clamp, a nut is welded on the side of the fuel assembly clamp, which faces the ejector rod, and the head of the ejector rod is in threaded connection with the nut.
5. The underwater forced vibration testing device of claim 4, wherein the nut is concentrically disposed with the sealing cone.
6. A fuel assembly underwater forced vibration test apparatus as claimed in claim 4, wherein the head of the head is threadedly connected to the M10 nut, and the M10 nut is engaged with the nut on the fuel assembly collar.
7. The underwater forced vibration test device for the fuel assembly as claimed in claim 1, wherein throat hoops are respectively arranged on the ejector pin pagoda joint and the sealing pagoda joint to fix the steel wire hoses.
8. The underwater forced vibration testing device for the fuel assembly as recited in claim 7, wherein the total number of the throat hoops is two or more.
9. The underwater forced vibration test device for the fuel assembly as claimed in claim 1, wherein the ejector rod is vertically arranged with the vibration excitation device and the fuel assembly clamp nut.
10. The fuel assembly underwater forced vibration testing apparatus of claim 1, wherein the sealing cone joint and the ram cone joint are the same in type and size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222872652.7U CN218496370U (en) | 2022-10-28 | 2022-10-28 | Underwater forced vibration test device for fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222872652.7U CN218496370U (en) | 2022-10-28 | 2022-10-28 | Underwater forced vibration test device for fuel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218496370U true CN218496370U (en) | 2023-02-17 |
Family
ID=85196418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222872652.7U Active CN218496370U (en) | 2022-10-28 | 2022-10-28 | Underwater forced vibration test device for fuel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218496370U (en) |
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2022
- 2022-10-28 CN CN202222872652.7U patent/CN218496370U/en active Active
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 102, No. 3, Building 2, No. 168, Xinsiping Road, Lingang New Area, China (Shanghai) Pilot Free Trade Zone, Pudong New Area, Shanghai in August 2012 Patentee after: Shanghai nuclear power equipment test and Verification Center Co.,Ltd. Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: Room 102, No. 3, Building 2, No. 168, Xinsiping Road, Lingang New Area, China (Shanghai) Pilot Free Trade Zone, Pudong New Area, Shanghai in August 2012 Patentee before: Shanghai nuclear power equipment test and Verification Center Co.,Ltd. Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |