CN208538494U - Spacer for CRDM - Google Patents
Spacer for CRDM Download PDFInfo
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- CN208538494U CN208538494U CN201821252722.6U CN201821252722U CN208538494U CN 208538494 U CN208538494 U CN 208538494U CN 201821252722 U CN201821252722 U CN 201821252722U CN 208538494 U CN208538494 U CN 208538494U
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- Prior art keywords
- spacer
- section
- crdm
- interlude
- end section
- Prior art date
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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 kind of spacer for CRDM, including tubular spacer ontology, the spacer ontology is multi-section combined structure, and each section of axis direction along spacer ontology for forming spacer ontology is successively arranged；Material positioned at the section of spacer body end is austenitic stainless steel, and the material of the section between spacer body end section is magnetic conductive metal material.The spacer is in motor-type CRDM; the spacer can not only play under hot and humid environment to the protective value of motor-type CRDM; the structure design of this programme simultaneously can optimize the electromagnetic efficiency of motor-type CRDM, while the spacer has the characteristics that easy to connect in motor-type CRDM and connection is reliable.
Description
Technical field
The utility model relates to control rod drive mechanism technical fields, more particularly to a kind of spacer for CRDM.
Background technique
CRDM is the abbreviation of " control rod drive mechanism ", it is the servo mechanism of reactor control and protection system, can
It drives C&P systems in the up and down motion of heap in-core according to instruction, C&P systems is kept to release the control in specified altitude assignment, power-off
Rod assembly simultaneously makes its quick insertion reactor core, and then completes the starting of reactor, regulation power, keeps power, normal shutdown and thing
Therefore the functions such as shutdown.
Currently, the CRDM in Marine Nuclear Power Plant reactor is mostly motor-type CRDM, however, motor-type in the prior art
CRDM haves the shortcomings that high failure rate, inconvenient for use.In the prior art, the optimization design about motor-type CRDM, occur as
Application No. is: CN201721371157.0, patent name are as follows: a kind of technical solution of shield electric machine type CRDM, the technical solution
In include technical characteristic spacer, spacer has been actually the housing of shielding action, which, which includes, avoids high temperature and humidity
Various challenges caused by CRDM decreasing insulating, electrical material are gone mouldy under environment are reactor on the water and high temperature are high
Reliably working such as provides a strong guarantee at the advantages under wet environment.
The performance for advanced optimizing motor-type CRDM is that those skilled in the art optimize control rod drive mechanism
Important directions.
Utility model content
It is that those skilled in the art drive control rod for the performance for advanced optimizing motor-type CRDM set forth above
The problem of important directions that mechanism optimizes, the utility model provide a kind of spacer for CRDM, and the spacer is used for
In motor-type CRDM, the spacer can not only be played to the protective value of motor-type CRDM under hot and humid environment, while this
The structure design of scheme can optimize the electromagnetic efficiency of motor-type CRDM, while the spacer has the connection side in motor-type CRDM
Just and reliable feature is connected.
Spacer provided by the utility model for CRDM solved the problems, such as by following technical essential, for CRDM every
Set, including tubular spacer ontology, the spacer ontology are multi-section combined structure, and form each section of spacer ontology along
The axis direction of spacer ontology is successively arranged；
Material positioned at the section of spacer body end is austenitic stainless steel, the section between spacer body end section
Material is magnetic conductive metal material.
In the prior art, stator component generally comprises base, stator winding and end cap, stator winding packet on motor-type CRDM
Winding ontology and stator core are included, electric connector is also connected on stator winding, electric connector is typically secured on base, is used for
It installs in the installation cavity of stator component and is generally additionally provided with encapsulating layer, the mover component of motor-type CRDM is mounted in pneumatic shell.
Due to the special working environment of motor-type CRDM, is designed for the structure of motor-type CRDM, propose a kind of packet in the prior art
Include the technical solution of spacer, the spacer for realizing by stator winding on stator component and extraneous hot and humid environment every
From, can eliminate CRDM decreasing insulating under hot and humid environment, electrical material go mouldy caused by various challenges scheme.
In the prior art, austenitic stainless steel is mostly used for the material of spacer, however, since austenitic stainless steel is one
Kind non-magnet material, therefore spacer, while stator component on playing protection motor-type CRDM, spacer influences the electromagnetism effect of CRDM
Rate.For this problem, in the prior art, motor-type CRDM for original no spacer or the motor-type for being designed as no spacer
CRDM is installed after spacer or using the function after having the motor-type CRDM of spacer, needed by increasing motor-type CRDM stator component
Rate, enables motor-type CRDM normal driving C&P systems.
In the present solution, be austenitic stainless steel by the material of the section for being set as spacer ontology both ends, in this way, realize every
Cover ontology when installing on motor-type CRDM, using the mode of welded connecting make the end of spacer ontology by girth joint with
Motor-type CRDM is fixedly connected, and the above girth joint is conducive to the seal isolation performance of spacer；Simultaneously as austenitic stainless steel postwelding
Even if also can guarantee between spacer and motor-type CRDM has enough bonding strengths so that spacer without any heat treatment
Reliable seal isolation protective performance can be played for a long time.And limit are as follows: the material of the section between spacer body end section
For magnetic conductive metal material, the above magnetic conductive metal material is compared to such as generally magnetic conductive metal material of austenitic stainless steel
Spacer can avoid the decline of motor-type CRDM electromagnetic efficiency or reduce the degree of motor-type CRDM electromagnetic efficiency decline, thus, not
Change motor-type CRDM stator component power or power changes in smaller situation, so that the performance of motor-type CRDM meets operating condition
It is required that；Simultaneously as beard and hair waves insulation blocking effect to spacer when in use, therefore after completing each section of splicing of spacer, it needs to guarantee
Spacer side will reach above-mentioned purpose without through hole, can be prepared by welding, snapping, bonding etc. in the prior art and be in
The spacer of tubular, and in view of the reliability of seal isolation, it is preferred to use welding scheme, and it is directed to austenitic stainless steel and magnetic conduction
Property Metal Material Welding, is located in the preparation section of spacer, end and motor-type compared to spacer due to this welding sequence
The welding of CRDM, it is thermally processable or even be repeatedly heat-treated, therefore according to welding technique in the prior art and heat treatment
Technology, the bonding strength for the section of the Duan Yuwei magnetic conductive metal material of austenitic stainless steel can guarantee.
To sum up, present solution provides a kind of spacer easy to assembly in motor-type CRDM, provide and a kind of facilitate acquisition
There is the spacer of enough bonding strengths with motor-type CRDM, provide a kind of spacer that can optimize motor-type CRDM electromagnetic efficiency.
Meanwhile be defined as end segments positioned at the section of spacer body end in this programme, compared to such as use permalloy material as every
The scheme for covering body end section, due at low cost using austenitic stainless steel material, therefore this programme additionally provides a kind of economy
The excellent spacer scheme of energy.
Preferably, it is contemplated that material is that the end segments of austenitic stainless steel can imitate motor-type CRDM electromagnetism if too long
Rate, which has an impact, even generates large effect, therefore actually end segments are designed more shorter better from electromagnetic efficiency, but
In view of spacer may influence end segments with sweating heat introduced when motor-type CRDM welded connecting and be magnetic conductive metal
The bonding strength of the section of material is pretended as those skilled in the art, and the physical length of end segments can be according to the reality of motor-type CRDM
Border size is designed, and such as according to the existing motor-type CRDM for control rod drive mechanism, is set as the above physical length
Numberical range are as follows: 5mm-50mm.
Further technical solution are as follows:
As the specific implementation form of spacer ontology, the multistage is three sections: by upper end to the lower end of spacer ontology, being divided
Not Wei upper end section, interlude and lower end section, the upper end section and lower end section material be austenitic stainless steel, the interlude
Material be magnetic conductive metal material.This programme is used, the spacer ontology is spelled by upper end section, interlude and lower end section sequence
It connects.
The upper end section, interlude and lower end section are seamless pipe.Using this programme, not only it is isolated conducive to the shielding of spacer
Performance, while being conducive to the uniformity of Distribution of Magnetic Field in motor-type CRDM circumferential direction.
As the specific implementation form of spacer ontology, the upper end section is welded to connect by girth joint in the upper of interlude
End, the lower end section are welded to connect by girth joint in the lower end of interlude.Using this programme, it is ensured that the above upper end section is in
Between do not occur penetrating through the perforation of spacer wall between section, between lower end section and interlude, shield isolation to reach conducive to spacer
The purpose of energy.
For the benefit of the service life of spacer, avoid or weaken spacer in use because corrosion etc. to motor-type CRDM
Have an adverse effect, the magnetic conductive metal material is magnetic conductivity stainless steel.
As the specific implementation of interlude, the material of the interlude be martensitic stain less steel, two-way body stainless steel,
Any one in permalloy.Preferably, the material of the interlude uses martensitic stain less steel, so that spacer has more preferably
Economy.
The lower end section is in the shape of a trumpet, and lower end lesser one end of section diameter is connected with the lower end of interlude.Existing skill
Spacer is traditionally arranged to be in isometrical cylindrical shape in art, specific to use are as follows: the upper end of spacer is fixedly connected with base, the lower end of spacer
It is fixedly connected with end cap, spacer, base, end cap three surround the closed installation cavity for being used to install stator winding.Simultaneously as
Motor-type CRDM weight is larger, general by hanging after base, spacer, end cap, stator component are connected into an entirety
The mode of dress realizes the assembly of part and pneumatic shell where motor-type CRDM stator component, in this way, due to the internal diameter of spacer itself
It is very small with pneumatic shell compatible portion outer diameter difference, while the motor-type CRDM stator component being suspended easily shakes, in this way,
During the motor-type CRDM stator component being suspended discharges downwards, spacer lower end and pneumatic shell upper end centering difficulty are high:
Spacer lower end easily causes spacer to be damaged with the collision of pneumatic shell upper end, not only influences the assembly efficiency of motor-type CRDM in this way,
Spacer is easy to appear after period of assembly is scrapped, completes the assembly of spacer simultaneously, and spacer can not play ideal isolation
The problem of energy.
Scheme provided above when using, is pacified in spacer by lower end of the one end being relatively large in diameter in the section of lower end as spacer
When loaded on motor-type CRDM, spacer is located in the hole section that end cap surrounds or positioned at the lower section of end cap, and as this field skill
Art personnel, the internal diameter of oared segrne pii above section meets the cooperation with pneumatic shell on spacer, on spacer more than oared segrne pii
Partial size or structure design use design in the prior art, using the spacer of this programme offer in assembly, by
In lower end, section bottom diameter is greater than the internal diameter of lower end section top spacer section, when carrying out motor-type CRDM assembly, due to pneumatic shell
It needs to be introduced into spacer by the lower end of spacer, as spacer occurs for the first time when the motor-type CRDM where stator component discharges downwards
When colliding with pneumatic shell, position of collision is located on the section inner wall of lower end, and end of the section inner wall surface in lower end relative to pneumatic shell at this time
Face be an inclined-plane, the guiding between spacer and pneumatic shell can be realized with ramp, not only can effectively avoid in this way spacer with it is resistance to
Pressure shell has an effect power direction in the sharp impacts of vertical direction, and spacer is caused substantially to deform or rupture, while lower end section is available
It is oriented in spacer with pneumatic shell centering, intuitively adjusts the position of the motor-type CRDM being suspended in the horizontal plane so that with resistance to
The accuracy of alignment of pressure shell is constantly further improved, and is conducive to motor-type CRDM assembly efficiency.Simultaneously in the present solution, being set as lower end
Section is in the shape of a trumpet, and the lower end relative to lower end section is in the shape of a trumpet, is more convenient integrally formed.
The reality of spacer installation region structure or shape on existing motor-type CRDM is adapted to as a kind of specific spacer ontology
Existing mode, the upper end section, interlude are in isometrical tubulose, and the internal diameter of both upper end section, interlude and outer diameter are equal, and
The internal diameter of the axis collinear of both upper end section, interlude, the lesser one end of the lower end section diameter is equal with the internal diameter of interlude,
The outer diameter of lower end lesser one end of section diameter is equal with the outer diameter of interlude.
Spacer installation region structure or shape on motor-type CRDM can be matched as one kind, can avoid spacer in installation process
Interval, which is put on, generates the implementation that stress is concentrated, can optimize lower end section collision bearing performance: one be relatively large in diameter by lower end section
End to lower end lesser one end of section diameter, the wall thickness of lower end section linearly reduce.
The utility model has the following beneficial effects:
In the present solution, be austenitic stainless steel by the material of the section for being set as spacer ontology both ends, in this way, realize every
Cover ontology when installing on motor-type CRDM, using the mode of welded connecting make the end of spacer ontology by girth joint with
Motor-type CRDM is fixedly connected, and the above girth joint is conducive to the seal isolation performance of spacer；Simultaneously as austenitic stainless steel postwelding
Even if also can guarantee between spacer and motor-type CRDM has enough bonding strengths so that spacer without any heat treatment
Reliable seal isolation protective performance can be played for a long time.And limit are as follows: the material of the section between spacer body end section
For magnetic conductive metal material, the above magnetic conductive metal material is compared to such as generally magnetic conductive metal material of austenitic stainless steel
Spacer can avoid the decline of motor-type CRDM electromagnetic efficiency or reduce the degree of motor-type CRDM electromagnetic efficiency decline, thus, not
Change motor-type CRDM stator component power or power changes in smaller situation, so that the performance of motor-type CRDM meets operating condition
It is required that；Simultaneously as beard and hair waves insulation blocking effect to spacer when in use, therefore after completing each section of splicing of spacer, it needs to guarantee
Spacer side will reach above-mentioned purpose without through hole, can be prepared by welding, snapping, bonding etc. in the prior art and be in
The spacer of tubular, and in view of the reliability of seal isolation, it is preferred to use welding scheme, and it is directed to austenitic stainless steel and magnetic conduction
Property Metal Material Welding, is located in the preparation section of spacer, end and motor-type compared to spacer due to this welding sequence
The welding of CRDM, it is thermally processable or even be repeatedly heat-treated, therefore according to welding technique in the prior art and heat treatment
Technology, the bonding strength for the section of the Duan Yuwei magnetic conductive metal material of austenitic stainless steel can guarantee.
To sum up, present solution provides a kind of spacer easy to assembly in motor-type CRDM, provide and a kind of facilitate acquisition
There is the spacer of enough bonding strengths with motor-type CRDM, provide a kind of spacer that can optimize motor-type CRDM electromagnetic efficiency.
Meanwhile the section in this programme positioned at spacer body end is defined as end segments, compared to such as using permalloy material
Expect the scheme as spacer body end section, due at low cost using austenitic stainless steel material, therefore this programme additionally provides one
The excellent spacer scheme of kind economic performance.
Detailed description of the invention
Fig. 1 is the structure sectional view of mono- specific embodiment of protection type CRDM described in the utility model.
Appended drawing reference in figure is successively are as follows: 1, interlude, 2, upper end section, 3, lower end section.
Specific embodiment
Below with reference to embodiment, the utility model is described in further detail, but the structure of the utility model is not only
It is limited to following embodiment.
Embodiment 1:
As shown in Figure 1, being used for the spacer of CRDM, including tubular spacer ontology, the spacer ontology is multistage combination
Formula structure, and each section of axis direction along spacer ontology for forming spacer ontology is successively arranged；
Material positioned at the section of spacer body end is austenitic stainless steel, the section between spacer body end section
Material is magnetic conductive metal material.
In the prior art, stator component generally comprises base, stator winding and end cap, stator winding packet on motor-type CRDM
Winding ontology and stator core are included, electric connector is also connected on stator winding, electric connector is typically secured on base, is used for
It installs in the installation cavity of stator component and is generally additionally provided with encapsulating layer, the mover component of motor-type CRDM is mounted in pneumatic shell.
Due to the special working environment of motor-type CRDM, is designed for the structure of motor-type CRDM, propose a kind of packet in the prior art
Include the technical solution of spacer, the spacer for realizing by stator winding on stator component and extraneous hot and humid environment every
From, can eliminate CRDM decreasing insulating under hot and humid environment, electrical material go mouldy caused by various challenges scheme.
In the prior art, austenitic stainless steel is mostly used for the material of spacer, however, since austenitic stainless steel is one
Kind non-magnet material, therefore spacer, while stator component on playing protection motor-type CRDM, spacer influences the electromagnetism effect of CRDM
Rate.For this problem, in the prior art, motor-type CRDM for original no spacer or the motor-type for being designed as no spacer
CRDM is installed after spacer or using the function after having the motor-type CRDM of spacer, needed by increasing motor-type CRDM stator component
Rate, enables motor-type CRDM normal driving C&P systems.
In the present solution, be austenitic stainless steel by the material of the section for being set as spacer ontology both ends, in this way, realize every
Cover ontology when installing on motor-type CRDM, using the mode of welded connecting make the end of spacer ontology by girth joint with
Motor-type CRDM is fixedly connected, and the above girth joint is conducive to the seal isolation performance of spacer；Simultaneously as austenitic stainless steel postwelding
Even if also can guarantee between spacer and motor-type CRDM has enough bonding strengths so that spacer without any heat treatment
Reliable seal isolation protective performance can be played for a long time.And limit are as follows: the material of the section between spacer body end section
For magnetic conductive metal material, the above magnetic conductive metal material is compared to such as generally magnetic conductive metal material of austenitic stainless steel
Spacer can avoid the decline of motor-type CRDM electromagnetic efficiency or reduce the degree of motor-type CRDM electromagnetic efficiency decline, thus, not
Change motor-type CRDM stator component power or power changes in smaller situation, so that the performance of motor-type CRDM meets operating condition
It is required that；Simultaneously as beard and hair waves insulation blocking effect to spacer when in use, therefore after completing each section of splicing of spacer, it needs to guarantee
Spacer side will reach above-mentioned purpose without through hole, can be prepared by welding, snapping, bonding etc. in the prior art and be in
The spacer of tubular, and in view of the reliability of seal isolation, it is preferred to use welding scheme, and it is directed to austenitic stainless steel and magnetic conduction
Property Metal Material Welding, is located in the preparation section of spacer, end and motor-type compared to spacer due to this welding sequence
The welding of CRDM, it is thermally processable or even be repeatedly heat-treated, therefore according to welding technique in the prior art and heat treatment
Technology, the bonding strength for the section of the Duan Yuwei magnetic conductive metal material of austenitic stainless steel can guarantee.
To sum up, present solution provides a kind of spacer easy to assembly in motor-type CRDM, provide and a kind of facilitate acquisition
There is the spacer of enough bonding strengths with motor-type CRDM, provide a kind of spacer that can optimize motor-type CRDM electromagnetic efficiency.
Meanwhile be defined as end segments positioned at the section of spacer body end in this programme, compared to such as use permalloy material as every
The scheme for covering body end section, due at low cost using austenitic stainless steel material, therefore this programme additionally provides a kind of economy
The excellent spacer scheme of energy.
Preferably, it is contemplated that material is that the end segments of austenitic stainless steel can imitate motor-type CRDM electromagnetism if too long
Rate, which has an impact, even generates large effect, therefore actually end segments are designed more shorter better from electromagnetic efficiency, but
In view of spacer may influence end segments with sweating heat introduced when motor-type CRDM welded connecting and be magnetic conductive metal
The bonding strength of the section of material is pretended as those skilled in the art, and the physical length of end segments can be according to the reality of motor-type CRDM
Border size is designed, and such as according to the existing motor-type CRDM for control rod drive mechanism, is set as the above physical length
Numberical range are as follows: 5mm-50mm.
Embodiment 2:
As shown in Figure 1, the present embodiment is further qualified on the basis of embodiment 1: the specific reality as spacer ontology
Existing form, the multistage are three sections: by upper end to the lower end of spacer ontology, respectively upper end section 2, interlude 1 and lower end section
3, the material of the upper end section 2 and lower end section 3 is austenitic stainless steel, and the material of the interlude 1 is magnetic conductive metal material
Material.This programme is used, the spacer ontology is formed by upper end section 2, interlude 1 and lower end 3 sequential concatenations of section.
The upper end section 2, interlude 1 and lower end section 3 are seamless pipe.Using this programme, not only it is conducive to the shielding of spacer
Isolation performance, while being conducive to the uniformity of Distribution of Magnetic Field in motor-type CRDM circumferential direction.
As the specific implementation form of spacer ontology, the upper end section 2 is welded to connect by girth joint in the upper of interlude 1
End, the lower end section 3 are welded to connect by girth joint in the lower end of interlude 1.Using this programme, it is ensured that the above upper end section 2
Do not occur penetrating through the perforation of spacer wall between interlude 1, between lower end section 3 and interlude 1, to reach conducive to spacer shielding
The purpose of isolation performance.
For the benefit of the service life of spacer, avoid or weaken spacer in use because corrosion etc. to motor-type CRDM
Have an adverse effect, the magnetic conductive metal material is magnetic conductivity stainless steel.
As the specific implementation of interlude 1, the material of the interlude 1 is martensitic stain less steel, two-way body is stainless
Any one in steel, permalloy.Preferably, the material of the interlude 1 uses martensitic stain less steel, so that spacer has
Better economy.
The lower end section 3 is in the shape of a trumpet, and lower end lesser one end of 3 diameters of section is connected with the lower end of interlude 1.It is existing
Spacer is traditionally arranged to be in isometrical cylindrical shape in technology, specific to use are as follows: the upper end of spacer is fixedly connected with base, under spacer
End is fixedly connected with end cap, and spacer, base, end cap three surround the closed installation cavity for being used to install stator winding.Meanwhile by
It is larger in motor-type CRDM weight, after base, spacer, end cap, stator component are connected into an entirety, generally pass through
The mode of lifting realizes the assembly of part and pneumatic shell where motor-type CRDM stator component, in this way, due to the internal diameter sheet of spacer
Body and pneumatic shell compatible portion outer diameter difference are very small, while the motor-type CRDM stator component being suspended easily shakes, this
Sample, during the motor-type CRDM stator component being suspended discharges downwards, spacer lower end and pneumatic shell upper end centering difficulty
High: spacer lower end easily causes spacer to be damaged with the collision of pneumatic shell upper end, not only influences the assembly effect of motor-type CRDM in this way
Rate, while spacer is easy to appear after period of assembly is scrapped, completes the assembly of spacer, spacer can not play ideal isolation
The problem of performance.
Scheme provided above when using, is pacified in spacer by lower end of the one end being relatively large in diameter in lower end section 3 as spacer
When loaded on motor-type CRDM, spacer is located in the hole section that end cap surrounds or positioned at the lower section of end cap, and as this field skill
Art personnel, the internal diameter of oared segrne pii above section meets the cooperation with pneumatic shell on spacer, on spacer more than oared segrne pii
Partial size or structure design use design in the prior art, using the spacer of this programme offer in assembly, by
In lower end, 3 bottom diameters of section are greater than the internal diameter of spacer section above lower end section 3, when carrying out motor-type CRDM assembly, due to pressure resistance
Shell needs are introduced into spacer by the lower end of spacer, as the motor-type CRDM where the stator component discharge downwards first time generation every
When set is collided with pneumatic shell, position of collision is located on 3 inner walls of section of lower end, and section 3 inner wall surfaces in lower end are relative to pneumatic shell at this time
End face be an inclined-plane, the guiding between spacer and pneumatic shell can be realized with ramp, not only can effectively avoid spacer in this way
Power direction is had an effect in the sharp impacts of vertical direction with pneumatic shell, spacer is caused substantially to deform or rupture, while lower end section 3
Can be used for spacer and pneumatic shell centering guiding, intuitively adjust the position in the horizontal plane the motor-type CRDM being suspended so that
It is constantly further improved with the accuracy of alignment of pneumatic shell, is conducive to motor-type CRDM assembly efficiency.Simultaneously in the present solution, being set as
Lower end section 3 is in the shape of a trumpet, and the lower end relative to lower end section 3 is in the shape of a trumpet, is more convenient integrally formed.
The reality of spacer installation region structure or shape on existing motor-type CRDM is adapted to as a kind of specific spacer ontology
Existing mode, the upper end section 2, interlude 1 are in isometrical tubulose, and the internal diameter of both upper end section 2, interlude 1 and outer diameter are homogeneous
Deng, and the axis collinear of both upper end section 2, interlude 1, the internal diameter and interlude 1 of the lesser one end of lower end 3 diameters of section
Internal diameter is equal, and the outer diameter of lower end lesser one end of 3 diameters of section is equal with the outer diameter of interlude 1.
Spacer installation region structure or shape on motor-type CRDM can be matched as one kind, can avoid spacer in installation process
Interval, which is put on, generates the implementation that stress is concentrated, can optimize 3 collision bearing performance of lower end section: being relatively large in diameter by lower end section 3
One end to lower end lesser one end of 3 diameters of section, the wall thickness of lower end section 3 linearly reduce.
The above content is the further descriptions made in conjunction with specific preferred embodiment to the utility model, cannot recognize
Determine specific embodiment of the present utility model to be only limited to these instructions.For the common skill of the utility model technical field
For art personnel, the other embodiments obtained in the case where not departing from the technical solution of the utility model be should be included in practical
In novel protection scope.
Claims (9)
1. being used for the spacer of CRDM, including tubular spacer ontology, which is characterized in that the spacer ontology is multi-section combined
Structure, and each section of axis direction along spacer ontology for forming spacer ontology is successively arranged；
Material positioned at the section of spacer body end is austenitic stainless steel, the material of the section between spacer body end section
For magnetic conductive metal material.
2. the spacer according to claim 1 for CRDM, which is characterized in that the multistage is three sections: by spacer sheet
The upper end of body to lower end, respectively upper end section (2), interlude (1) and lower end section (3), the upper end section (2) and lower end section (3)
Material be austenitic stainless steel, the material of the interlude (1) is magnetic conductive metal material.
3. the spacer according to claim 2 for CRDM, which is characterized in that the upper end section (2), interlude (1) and
Lower end section (3) is seamless pipe.
4. the spacer according to claim 2 for CRDM, which is characterized in that the upper end section (2) passes through boxing seam weld
It is connected to the upper end of interlude (1) in succession, the lower end section (3) is welded to connect by girth joint in the lower end of interlude (1).
5. the spacer according to claim 2 for CRDM, which is characterized in that the magnetic conductive metal material is magnetic conductivity
Stainless steel.
6. the spacer according to claim 5 for CRDM, which is characterized in that the material of the interlude (1) is geneva
Body stainless steel, two-way body stainless steel, any one in permalloy.
7. the spacer according to claim 2 for CRDM, which is characterized in that the lower end section (3) is in the shape of a trumpet, and
Lower end section lesser one end of (3) diameter is connected with the lower end of interlude (1).
8. the spacer according to claim 7 for CRDM, which is characterized in that the upper end section (2), interlude (1) are equal
In isometrical tubulose, and the internal diameter of both upper end section (2), interlude (1) and outer diameter are equal, and upper end section (2), interlude (1)
The internal diameter of the axis collinear of the two, the lesser one end of described lower end section (3) diameter is equal with the internal diameter of interlude (1), lower end section
(3) outer diameter of the lesser one end of diameter is equal with the outer diameter of interlude (1).
9. the spacer according to claim 8 for CRDM, which is characterized in that the one end being relatively large in diameter by lower end section (3)
To lower end lesser one end of section (3) diameter, the wall thickness of lower end section (3) linearly reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821252722.6U CN208538494U (en) | 2018-08-03 | 2018-08-03 | Spacer for CRDM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821252722.6U CN208538494U (en) | 2018-08-03 | 2018-08-03 | Spacer for CRDM |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208538494U true CN208538494U (en) | 2019-02-22 |
Family
ID=65386450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821252722.6U Active CN208538494U (en) | 2018-08-03 | 2018-08-03 | Spacer for CRDM |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208538494U (en) |
-
2018
- 2018-08-03 CN CN201821252722.6U patent/CN208538494U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200710 Address after: No. 328, Section 1, Changshun Avenue, Shuangliu District, Chengdu, Sichuan 610000 Patentee after: NUCLEAR POWER INSTITUTE OF CHINA Address before: Dujiangyan City, Sichuan province 610000 Cheung Road, Chengdu city of Sichuan Dujiangyan Economic Development Zone No. 5 Patentee before: Sichuan Huadu Nuclear Equipment Manufacture Co.,Ltd. |