CN203799679U - Device and structure for measuring pressure in rod bundle type fuel assembly guide tube - Google Patents
Device and structure for measuring pressure in rod bundle type fuel assembly guide tube Download PDFInfo
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- CN203799679U CN203799679U CN201420230390.7U CN201420230390U CN203799679U CN 203799679 U CN203799679 U CN 203799679U CN 201420230390 U CN201420230390 U CN 201420230390U CN 203799679 U CN203799679 U CN 203799679U
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- mounting pipe
- rear end
- guide pipe
- anchor ear
- pipe
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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
Abstract
The utility model discloses a device for measuring pressure in a rod bundle type fuel assembly guide tube. The device comprises an installing tube, wherein the two ends of the installing tube are open, the front end of the installing tube is provided with a threaded hole, the rear end of the installing hole is provided with a pressure leading hole, and the end portion of the rear end of the installing tube is in an arc shape matched with the outer wall of the guide tube; the device further comprises a transient pressure sensor installed in the installing tube through the threaded hole, wherein the transient pressure sensor does not stretches out of the rear end of the installing tube. The utility model further discloses a pressure for measuring the pressure in the rod bundle type fuel assembly guide tube. The device and the structure have the advantages that the sizes are small, installation is convenient, the sealing structure can be easily obtained, and the sealing effect is good.
Description
Technical field
The utility model relates to hydrodynamic pressure fields of measurement.
Background technology
According to the designing requirement of reactor fuel assemblies, fuel assembly should arrange guide pipe, for control rod provides passage, or holds burnable poison rod, neutron source rod, choke plug and In-core Instrumentation device, and for they provide enough coolant flows.Guide pipe design should be taken into account that quick scram will be summed to quick scram necessary buffering is provided, and can bear pressure instantaneous action and move by control rod the abrasion and the impact that cause, need the transient pressure carrying out under quick scram condition to measure, for guide pipe design provides test basis for this reason.When measurement, because rod cluster type fuel assembly guide pipe is the only thin walled tube of 0.5-1.5mm of wall thickness, measurement mechanism is difficult for installing, and guide pipe is distributed in the middle of the fuel rod of dense arrangement, and installing space is narrow and small.Guide pipe internal pressure measurement mechanism microminiaturized and and guide pipe between sealing be the difficult point of Design and manufacture.
The people such as Hu Jun have delivered one section of paper about the experimental study of Qinshan Phase II NPP Project Control rod drive line cold alignment for 2003 on " Nuclear Power Engineering ".But this article is only mentioned the transient pressure of the interior water of guide pipe while utilizing the dynamic pressure transducer measurement scram that is arranged in guide pipe end, measurement mechanism is not described.
Utility model content
The purpose of this utility model is to overcome measurement mechanism in prior art inconvenient deficiency is installed, and a kind of rod cluster type fuel assembly guide pipe internal pressure measurement mechanism is provided.
Another object of the present utility model is to provide a kind of rod cluster type fuel assembly guide pipe internal pressure to measure structure.
The purpose of this utility model is achieved through the following technical solutions:
A kind of rod cluster type fuel assembly guide pipe internal pressure measurement mechanism, comprise mounting pipe, the both ends open of mounting pipe, the front end of mounting pipe is threaded hole, the rear end of mounting pipe is tracting pressuring hole, the end, rear end of mounting pipe is the circular arc type mating with guide pipe outer wall, and guide pipe concordant with guide pipe inwall is inserted in the end of tracting pressuring hole; Also comprise by threaded hole and be installed on the transient pressure sensor in mounting pipe, transient pressure sensor does not stretch out the rear end of mounting pipe.
This device is installed on the outer wall of guide pipe, easy for installation, without open screw thread on guide pipe, measurement mechanism is installed, and has avoided the problem of the installation inconvenience causing because guide pipe wall thickness is little.Meanwhile, this device volume is little, between the fuel rod of dense arrangement, also can easily arrange.
Further, the rear end of described mounting pipe offers annulus seal groove, also comprises the O-ring seal being arranged in annulus seal groove.
Because installing space size is little, and guide pipe internal pressure is high, causes difficult sealing between measurement mechanism and guide pipe to realize.In order to address this problem, adopt the structure that positions, seals in mounting pipe rear end to seal, can make sealing be easy to realize, effectively improve sealing effectiveness.
Further, also comprise anchor ear A and anchor ear B, it is upper that described mounting pipe is fixed on anchor ear A, and the rear end of described mounting pipe is concordant with the inside surface of anchor ear A, and anchor ear A and anchor ear B are bolted.
By anchor ear, this device is fixed, mounts and dismounts all very easyly, avoided being welded and fixed and cause distortion, the unsteady problem of gluing connection.
Another object of the present utility model is achieved through the following technical solutions:
A kind of rod cluster type fuel assembly guide pipe internal pressure is measured structure, comprises guide pipe, and the outer wall of guide pipe offers through hole; Also comprise mounting pipe, the both ends open of mounting pipe, the front end of mounting pipe is threaded hole, the rear end of mounting pipe is tracting pressuring hole, the end, rear end of mounting pipe is the circular arc type mating with guide pipe outer wall, and the end, rear end of mounting pipe is arranged on the outer wall of guide pipe, and tracting pressuring hole is corresponding with through hole; Also comprise by threaded hole and be installed on the transient pressure sensor in mounting pipe, transient pressure sensor does not stretch out the rear end of mounting pipe.
This structure is installed on mounting pipe on the outer wall of guide pipe, easy for installation, without open screw thread on guide pipe, measurement mechanism is installed, and has avoided the problem of the installation inconvenience causing because guide pipe wall thickness is little.Meanwhile, this device volume is little, between the fuel rod of dense arrangement, also can easily arrange.
Further, the rear end of described mounting pipe offers annulus seal groove, also comprises the O-ring seal being arranged in annulus seal groove.
Because installing space size is little, and guide pipe internal pressure is high, causes difficult sealing between measurement mechanism and guide pipe to realize.In order to address this problem, adopt the structure that positions, seals in mounting pipe rear end to seal, can make sealing be easy to realize, effectively improve sealing effectiveness.
Further, also comprise anchor ear A and anchor ear B, it is upper that described mounting pipe is fixed on anchor ear A, and the rear end of described mounting pipe is concordant with the inside surface of anchor ear A, and anchor ear A and anchor ear B are bolted and encircle described guide pipe.
By anchor ear, this device is fixed, mounts and dismounts all very easyly, avoided being welded and fixed and cause distortion, the unsteady problem of gluing connection.
In sum, advantage of the present utility model and beneficial effect are:
1. the utility model volume is little, easy for installation, has solved guide pipe internal pressure in this small space of rod cluster type fuel assembly and has measured problem;
2. hermetically-sealed construction of the present utility model is easy to realize, good sealing effect;
3. the utility model is fixed by anchor ear, and installation and removal are convenient, avoided being welded and fixed bring difficult in maintenance, the problem of the destruction guide pipe tube wall that brings of being threaded.
Brief description of the drawings
In order to be illustrated more clearly in embodiment of the present utility model, will be briefly described describing the required accompanying drawing of using in the utility model embodiment below.Apparent, the accompanying drawing in the following describes is only some embodiment that record in the utility model, for a person skilled in the art, in the situation that not paying creative work, can also, according to accompanying drawing below, obtain other accompanying drawing.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the layout schematic diagram of the utility model in fuel assembly;
Wherein, the parts title that Reference numeral is corresponding is as follows:
1-transient pressure sensor, 2-mounting pipe, 3-annulus seal groove, 4-tracting pressuring hole, 5-O-ring seal, 6-anchor ear A, 7-anchor ear B, 8-bolt, 9-guide pipe, 10-through hole, 11-fuel rod.
Embodiment
In order to make those skilled in the art understand better the utility model, below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out to clear, complete description.Apparent, embodiment described below is only the part in the utility model embodiment, instead of all.The embodiment recording based on the utility model, other all embodiment that those skilled in the art obtain in the situation that not paying creative work, all in the scope of the utility model protection.
Embodiment 1:
As shown in Figure 1, a kind of rod cluster type fuel assembly guide pipe internal pressure measurement mechanism, comprise mounting pipe 2, the both ends open of mounting pipe 2, the front end of mounting pipe 2 is threaded hole, and the rear end of mounting pipe 2 is tracting pressuring hole 4, and the end, rear end of mounting pipe 2 is the circular arc type mating with guide pipe outer wall, guide pipe 9 is inserted in the end of tracting pressuring hole 4, concordant with guide pipe 9 inwalls; Also comprise by threaded hole and be installed on the transient pressure sensor 1 in mounting pipe 2, transient pressure sensor 1 does not stretch out the rear end of mounting pipe 2.
Embodiment 2:
As shown in Figure 1, the present embodiment is on the basis of embodiment 1, and the rear end of described mounting pipe 2 offers annulus seal groove 3, also comprises the O-ring seal 5 being arranged in annulus seal groove 3.
Embodiment 3:
As shown in Figure 1, the present embodiment, on the basis of embodiment 1 or 2, also comprises anchor ear A6 and anchor ear B7, and it is upper that described mounting pipe 2 is fixed on anchor ear A6, and the rear end of described mounting pipe 2 is concordant with the inside surface of anchor ear A6, and anchor ear A6 is connected by bolt 8 with anchor ear B7.
Embodiment 4:
As depicted in figs. 1 and 2, a kind of rod cluster type fuel assembly guide pipe internal pressure is measured structure, comprises guide pipe 9, and the outer wall of guide pipe 9 offers through hole 10; Also comprise mounting pipe 2, the both ends open of mounting pipe 2, the front end of mounting pipe 2 is threaded hole, the rear end of mounting pipe 2 is tracting pressuring hole 4, the end, rear end of mounting pipe 2 is the circular arc type mating with guide pipe 9 outer walls, the end, rear end of mounting pipe 2 is arranged on the outer wall of guide pipe 9, and tracting pressuring hole 4 is corresponding with through hole 10; Also comprise by threaded hole and be installed on the transient pressure sensor 1 in mounting pipe 2, transient pressure sensor 1 does not stretch out the rear end of mounting pipe 2.
Embodiment 5:
As depicted in figs. 1 and 2, the present embodiment is on the basis of embodiment 4, and the rear end of described mounting pipe 2 offers annulus seal groove 3, also comprises the O-ring seal 5 being arranged in annulus seal groove 3.
Embodiment 6:
As depicted in figs. 1 and 2, the present embodiment, on the basis of embodiment 4 or 5, also comprises anchor ear A6 and anchor ear B7, and described mounting pipe 2 is fixed on anchor ear A6, the rear end of described mounting pipe 2 is concordant with the inside surface of anchor ear A6, and anchor ear A6 is connected by bolt 8 with anchor ear B7 and encircles described guide pipe 9.
Embodiment 7:
As depicted in figs. 1 and 2, the present embodiment is on the basis of embodiment 4,5 or 6, described measurement structure in use, mounting pipe 2 is 45° angle with the straight line forming with the fuel rod 11 of a line, can reduce mounting pipe 2 occupied space diametrically, thereby reduce the change to fuel assembly inner structure, make this measurement structure more be easy to arrange.If the arrangement of mounting pipe 2 departs from more greatly 45 °, will increase radial space requirement, maybe need to increase the change to fuel assembly inner structure.
Embodiment 8:
As depicted in figs. 1 and 2, a kind of rod cluster type fuel assembly guide pipe internal pressure is measured structure, comprises guide pipe 9, and the outer wall of guide pipe 9 offers through hole 10; Also comprise mounting pipe 2, the both ends open of mounting pipe 2, the front end of mounting pipe 2 is threaded hole, the rear end of mounting pipe 2 is tracting pressuring hole 4, the end, rear end of mounting pipe 2 is the circular arc type mating with guide pipe 9 outer walls, the end, rear end of mounting pipe 2 is arranged on the outer wall of guide pipe 9, and tracting pressuring hole 4 is corresponding with through hole 10; Also comprise by threaded hole and be installed on the transient pressure sensor 1 in mounting pipe 2, transient pressure sensor 1 does not stretch out the rear end of mounting pipe 2.The rear end of described mounting pipe 2 offers annulus seal groove 3, also comprises the O-ring seal 5 being arranged in annulus seal groove 3.Also comprise anchor ear A6 and anchor ear B7, described mounting pipe 2 is fixed on that anchor ear A6 is upper, and the rear end of described mounting pipe 2 is concordant with the inside surface of anchor ear A6, and anchor ear A6 is connected by bolt 8 with anchor ear B7 and encircles described guide pipe 9.
The principle of work of the present embodiment is as follows:
When the pressure of the chilled water in guide pipe 9 produces instantaneous variation, chilled water enters mounting pipe 2 inside by through hole 10 and tracting pressuring hole 4, and the transient pressure sensor 1 in mounting pipe 2 detects the instantaneous pressure value of chilled water.Tracting pressuring hole 4, O-ring seal 5 form hermetically-sealed construction jointly with guide pipe 9 outside surfaces, prevent cooling water leakage.
As mentioned above, just can realize preferably the utility model.
Claims (6)
1. a rod cluster type fuel assembly guide pipe internal pressure measurement mechanism, is characterized in that:
Comprise mounting pipe (2), the both ends open of mounting pipe (2), the front end of mounting pipe (2) is threaded hole, the rear end of mounting pipe (2) is tracting pressuring hole (4), the end, rear end of mounting pipe (2) is the circular arc type mating with guide pipe outer wall, and guide pipe (9) concordant with guide pipe (9) inwall is inserted in the end of tracting pressuring hole (4);
Also comprise by threaded hole and be installed on the transient pressure sensor (1) in mounting pipe (2), transient pressure sensor (1) does not stretch out the rear end of mounting pipe (2).
2. a kind of rod cluster type fuel assembly guide pipe internal pressure measurement mechanism according to claim 1, is characterized in that:
The rear end of described mounting pipe (2) offers annulus seal groove (3), also comprises the O-ring seal (5) being arranged in annulus seal groove (3).
3. a kind of rod cluster type fuel assembly guide pipe internal pressure measurement mechanism according to claim 1, is characterized in that:
Also comprise anchor ear A(6) and anchor ear B(7), described mounting pipe (2) is fixed on anchor ear A(6) upper, the rear end of described mounting pipe (2) and anchor ear A(6) inside surface concordant, anchor ear A(6) with anchor ear B(7) be connected by bolt (8).
4. rod cluster type fuel assembly guide pipe internal pressure is measured a structure, it is characterized in that:
Comprise guide pipe (9), the outer wall of guide pipe (9) offers through hole (10);
Also comprise mounting pipe (2), the both ends open of mounting pipe (2), the front end of mounting pipe (2) is threaded hole, the rear end of mounting pipe (2) is tracting pressuring hole (4), the end, rear end of mounting pipe (2) is the circular arc type mating with guide pipe (9) outer wall, the end, rear end of mounting pipe (2) is arranged on the outer wall of guide pipe (9), and tracting pressuring hole (4) is corresponding with through hole (10);
Also comprise by threaded hole and be installed on the transient pressure sensor (1) in mounting pipe (2), transient pressure sensor (1) does not stretch out the rear end of mounting pipe (2).
5. a kind of rod cluster type fuel assembly guide pipe internal pressure according to claim 4 is measured structure, it is characterized in that:
The rear end of described mounting pipe (2) offers annulus seal groove (3), also comprises the O-ring seal (5) being arranged in annulus seal groove (3).
6. a kind of rod cluster type fuel assembly guide pipe internal pressure according to claim 4 is measured structure, it is characterized in that:
Also comprise anchor ear A(6) and anchor ear B(7), described mounting pipe (2) is fixed on anchor ear A(6) on, the rear end of described mounting pipe (2) and anchor ear A(6) inside surface concordant, anchor ear A(6) with anchor ear B(7) be connected and encircle described guide pipe (9) by bolt (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420230390.7U CN203799679U (en) | 2014-05-07 | 2014-05-07 | Device and structure for measuring pressure in rod bundle type fuel assembly guide tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420230390.7U CN203799679U (en) | 2014-05-07 | 2014-05-07 | Device and structure for measuring pressure in rod bundle type fuel assembly guide tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203799679U true CN203799679U (en) | 2014-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420230390.7U Active CN203799679U (en) | 2014-05-07 | 2014-05-07 | Device and structure for measuring pressure in rod bundle type fuel assembly guide tube |
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| Country | Link |
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| CN (1) | CN203799679U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683722A (en) * | 2017-02-22 | 2017-05-17 | 哈尔滨工程大学 | Rod bundle channel flow pressure measuring test device |
| CN106710647A (en) * | 2017-01-09 | 2017-05-24 | 中国核动力研究设计院 | Device and method for simulated measurement of heating rod cluster channel wall temperatures under movement conditions |
-
2014
- 2014-05-07 CN CN201420230390.7U patent/CN203799679U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710647A (en) * | 2017-01-09 | 2017-05-24 | 中国核动力研究设计院 | Device and method for simulated measurement of heating rod cluster channel wall temperatures under movement conditions |
| CN106683722A (en) * | 2017-02-22 | 2017-05-17 | 哈尔滨工程大学 | Rod bundle channel flow pressure measuring test device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |