CN207718838U - Heavy water reactor fuel handling white-out station potentiometer protective device - Google Patents
Heavy water reactor fuel handling white-out station potentiometer protective device Download PDFInfo
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- CN207718838U CN207718838U CN201721811843.5U CN201721811843U CN207718838U CN 207718838 U CN207718838 U CN 207718838U CN 201721811843 U CN201721811843 U CN 201721811843U CN 207718838 U CN207718838 U CN 207718838U
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- sealing
- plug
- potentiometer
- protective cover
- screw
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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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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model belongs to fuel for nuclear power plant operating technology field, and in particular to a kind of heavy water reactor fuel handling white-out station potentiometer protective device.It is characterized in that：It includes potentiometer tie-rod sealing circle, sealing-plug, sealing plug sealing ring, gasket, screw and protective cover；Sealing-plug is sleeved on potentiometric pull rod, is realized and is sealed by potentiometer tie-rod sealing circle between pull rod；The lower end of sealing-plug is fixedly connected by screw with protective cover；On sealing-plug, the interconnecting piece between sealing-plug and protective cover is sealed sealing-plug ring set；Gasket is sleeved on screw, is sealed to the interconnecting piece of screw and protective cover.Heavy water reactor fuel handling white-out station potentiometer protective device described in the utility model is safe and reliable, and easy to use, stability is strong; high financial profit; avoid staff by the risk of unexpected dose irradiation, it is ensured that operating personnel's safety meets the normal operation of power station fuel handling equipment.
Description
Technical field
The utility model belongs to fuel for nuclear power plant operating technology field, and in particular to a kind of heavy water reactor fuel handling white-out station
Potentiometer protective device.
Background technology
Two heavy water reactor units of Qinshan Phase II NPP, heavy water reactor advantage are exactly on-line refuelling, and refuelling system is related to a variety of set
It is standby, and with power station main system, heavy water, spentnuclear fuel direct interface, the careless slightly heavy water that will result in lets out, the events such as pollution workshop,
Wherein stock is double sets the key equipment that potentiometer is exactly fuel handling system, the operation of fuel manipulator crane feed bin Liquid level valve,
Analog signals are sent to master control room by potentiometer entirely, to confirm the normal opening and closing of valve, fuel manipulator crane operational process
In, it has a small amount of heavy water and hydraulic oil leaks into potentiometer surface, once entering inside potentiometer, it is defeated to result in potentiometer
Go out signal drift, cannot normally show the on off state of valve, while potentiometer can be caused to damage, this potentiometer by foreign countries into
Mouthful, expensive, two heavy water reactor units have nearly 30 root long bar potentiometer.Exist in view of factors above, development one need to be opened
It is a to protect the potentiometric protective device of stock, and potentiometer and miscellaneous equipment normal operation cannot be influenced, to ensure that fuel is grasped
Make the stable operation of system.
Utility model content
The purpose of this utility model is that developing a set of heavy water reactor fuel manipulator crane white-out station potentiometer protective device, can prevent
Heavy water is leaked in fuel manipulator crane operational process and hydraulic oil enters potentiometer, it is ensured that potentiometer energy normal operation feeds back positive exact figures
According to confirming valve state in time, while can also extend the stock potentiometer service life, a large amount of foreign exchange funds saved for company.
The utility model is realized in this way：
A kind of heavy water reactor fuel handling white-out station potentiometer protective device, including it is potentiometer tie-rod sealing circle, sealing-plug, close
Blocking sealing ring, gasket, screw and protective cover；Sealing-plug is sleeved on potentiometric pull rod, passes through current potential between pull rod
It counts tie-rod sealing circle and realizes sealing；The lower end of sealing-plug is fixedly connected by screw with protective cover；Sealing-plug ring set exists
On sealing-plug, the interconnecting piece between sealing-plug and protective cover is sealed；Gasket is sleeved on screw, to screw and protection
The interconnecting piece of cover is sealed.
Protective cover generally cylindrical tube as described above, uniformly distributed on the side wall of upper end there are three mounting holes, for pacifying
Cartridge screw.
Sealing-plug as described above is generally annular, is divided into upper and lower two parts, the diameter of top edge and protective cover
Outer diameter matches, and the diameter of lower edge and the internal diameter of protective cover match；Lower part side circumference uniform distribution there are three mounting hole,
It is corresponding with the position of the mounting hole of protective cover, it is used for mounting screw；Sealing-plug ring set is in the lower part of sealing-plug；Close
Blocking top center is provided with through-hole, and the diameter of through-hole diameter and potentiometric pull rod matches, for across potentiometer
Pull rod realizes the sealing between through-hole and pull rod by potentiometer tie-rod sealing circle.
Potentiometer tie-rod sealing circle, sealing plug sealing ring and gasket as described above are all made of rubber material and are made；It is close
Blocking is made of nylon material；Screw is made of stainless steel；Protective cover is made of organic glass.
The utility model has the beneficial effects that：
Heavy water reactor fuel handling white-out station potentiometer protective device described in the utility model is safe and reliable, user
Just, stability is strong, high financial profit, avoids staff by the risk of unexpected dose irradiation, it is ensured that operating personnel's safety, it is full
The normal operation of sufficient power station fuel handling equipment creates domestic and international identical power station similar to stock potentiometer advanced level.
Description of the drawings
Fig. 1 is that the heavy water reactor fuel handling white-out station potentiometer protective device of the utility model is mounted on existing heavy water reactor
The structural schematic diagram at the heavy water white-out station in nuclear fuel loading and unloading material system；
Fig. 2 is the structural schematic diagram of the heavy water reactor fuel handling white-out station potentiometer protective device of the utility model.
Wherein：1. fuel manipulator crane low pressure drain valve, 2. potentiometer protective devices, 3. potentiometers, 4. cylinders, 5. heavy water white-outs
It stands, 6. potentiometer tie-rod sealing circles, 7. sealing-plugs, 8. sealing plug sealing rings, 9. gaskets, 10. screws, 11. protective covers.
Specific implementation mode
The utility model is described further with reference to the accompanying drawings and examples.
As shown in Figure 1, the heavy water reactor fuel handling white-out station potentiometer protective device of the utility model is mounted on existing
On heavy water white-out station 5 in heavy water reactor nuclear fuel loading and unloading material system, heavy water white-out station 5 includes fuel manipulator crane low pressure drain valve 1, electricity
Position meter 3 and cylinder 4,2 integral installation of potentiometer protective device is on potentiometer 3.
As shown in Fig. 2, a kind of heavy water reactor fuel handling white-out station potentiometer protective device, including potentiometer tie-rod sealing circle
6, sealing-plug 7, sealing plug sealing ring 8, gasket 9, screw 10 and protective cover 11.Sealing-plug 7 is sleeved on the pull rod of potentiometer 3
On, it is realized and is sealed by potentiometer tie-rod sealing circle 6 between pull rod.The lower end of sealing-plug 7 passes through screw 10 and protective cover 11
It is fixedly connected.Sealing plug sealing ring 8 is sleeved on sealing-plug 7, and the interconnecting piece between sealing-plug 7 and protective cover 11 carries out close
Envelope.Gasket 9 is sleeved on screw 10, is sealed to the interconnecting piece of screw 10 and protective cover 11.
The generally cylindrical tube of protective cover 11, uniformly distributed on the side wall of upper end there are three mounting holes, are used for mounting screw 10.
Sealing-plug 7 is generally annular, is divided into upper and lower two parts, the diameter of top edge and the outer diameter phase of protective cover 11
Matching, the internal diameter of the diameter and protective cover 11 of lower edge match.There are three mounting holes for side circumference uniform distribution in lower part, with guarantor
The position of the mounting hole of shield 11 is corresponding, is used for mounting screw 10.Sealing plug sealing ring 8 is sleeved on the lower part of sealing-plug 7.
7 top center of sealing-plug is provided with through-hole, and the diameter of through-hole diameter and the pull rod of potentiometer 3 matches, for across electricity
Position meter pull rod realizes the sealing between through-hole and pull rod by potentiometer tie-rod sealing circle 6.
In the present embodiment, potentiometer tie-rod sealing circle 6, sealing plug sealing ring 8 and gasket 9 are all made of rubber material system
At.Sealing-plug 7 is made of nylon material.Screw 10 is made of stainless steel.Protective cover 11 is made of organic glass.
The course of work of the utility model is as follows：
1. the connection draw ring that 3 top of potentiometer is connected with 4 piston rod of cylinder is unscrewed, by 11 sets good of protective cover of processing and fabricating
Enter.
2. sealing-plug 7 is packed into 3 pull rod of potentiometer, make 11 3 mounting hole phases of three mounting holes of its circumferential edge and protective cover
Alignment, is then tightened with fixing screws 10 and is sealed using gasket 9.
3. after potentiometer tie-rod sealing circle 6 is passed through 3 pull rod of potentiometer, it is installed in the through-hole of sealing-plug 7, and utilizes electricity
The fixing screws and gasket of position meter pull rod itself compress it.
4. time dress potentiometer 3 connects draw ring, pull rod connect with 3 stock of potentiometer, then by the connection draw ring of potentiometer 3 and
Driving 4 piston of cylinder is connected and tightens.
5. when cylinder 4 drives fuel manipulator crane low pressure drain valve 1,4 piston rod of cylinder drives 3 pull rod of potentiometer in the process up and down
It moves up and down, 3 pull rod of potentiometer drives potentiometer protective device 2 to move up and down.
Fuel handling system occurs to be caused by heavy water and hydraulic fluid leak never again after being mounted with the utility model
Potentiometer voltage drifts about, and causes the not reciprocity event of valve state to occur, a large amount of foreign exchanges are saved every year for company, reduce power station life
Produce cost, it is ensured that the stable operation of fuel handling equipment.
The implementation of the utility model is explained in detail above in conjunction with embodiment, but the utility model and unlimited
In above-described embodiment, within the knowledge of a person skilled in the art, the utility model can also not departed from
Various changes can be made under the premise of objective.Existing skill may be used in the content not being described in detail in the utility model specification
Art.
Claims (4)
1. a kind of heavy water reactor fuel handling white-out station potentiometer protective device, it is characterised in that：It includes potentiometer tie-rod sealing
Enclose (6), sealing-plug (7), sealing plug sealing ring (8), gasket (9), screw (10) and protective cover (11)；Sealing-plug (7) is set with
On the pull rod of potentiometer (3), is realized and sealed by potentiometer tie-rod sealing circle (6) between pull rod；The lower end of sealing-plug (7)
It is fixedly connected with protective cover (11) by screw (10)；Sealing plug sealing ring (8) is sleeved on sealing-plug (7), to sealing-plug (7)
Interconnecting piece between protective cover (11) is sealed；Gasket (9) is sleeved on screw (10), to screw (10) and protective cover
(11) interconnecting piece is sealed.
2. heavy water reactor fuel handling white-out station according to claim 1 potentiometer protective device, it is characterised in that：Described
Protective cover (11) generally cylindrical tube, uniformly distributed on the side wall of upper end there are three mounting holes, are used for mounting screw (10).
3. heavy water reactor fuel handling white-out station according to claim 2 potentiometer protective device, it is characterised in that：Described
Sealing-plug (7) is generally annular, is divided into upper and lower two parts, and the outer diameter of the diameter and protective cover (11) of top edge matches,
The diameter of lower edge and the internal diameter of protective cover (11) match；There are three mounting holes for side circumference uniform distribution in lower part, with protection
The position for covering the mounting hole of (11) is corresponding, is used for mounting screw (10)；Sealing plug sealing ring (8) is sleeved on sealing-plug (7)
Lower part；Sealing-plug (7) top center is provided with through-hole, the diameter of through-hole diameter and the pull rod of potentiometer (3) matches,
For passing through potentiometer pull rod, the sealing between through-hole and pull rod is realized by potentiometer tie-rod sealing circle (6).
4. heavy water reactor fuel handling white-out station according to claim 1 potentiometer protective device, it is characterised in that：Described
Potentiometer tie-rod sealing circle (6), sealing plug sealing ring (8) and gasket (9) are all made of rubber material and are made；Sealing-plug (7) is adopted
It is made of nylon material；Screw (10) is made of stainless steel；Protective cover (11) is made of organic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721811843.5U CN207718838U (en) | 2017-12-22 | 2017-12-22 | Heavy water reactor fuel handling white-out station potentiometer protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721811843.5U CN207718838U (en) | 2017-12-22 | 2017-12-22 | Heavy water reactor fuel handling white-out station potentiometer protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207718838U true CN207718838U (en) | 2018-08-10 |
Family
ID=63057279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721811843.5U Active CN207718838U (en) | 2017-12-22 | 2017-12-22 | Heavy water reactor fuel handling white-out station potentiometer protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207718838U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109961864A (en) * | 2017-12-22 | 2019-07-02 | 中核核电运行管理有限公司 | Heavy water reactor fuel handling white-out station potentiometer protective device |
| CN110752047A (en) * | 2019-11-19 | 2020-02-04 | 浙江万纳核电检修有限公司 | Heavy water transmission control equipment of loading and unloading machine |
-
2017
- 2017-12-22 CN CN201721811843.5U patent/CN207718838U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109961864A (en) * | 2017-12-22 | 2019-07-02 | 中核核电运行管理有限公司 | Heavy water reactor fuel handling white-out station potentiometer protective device |
| CN110752047A (en) * | 2019-11-19 | 2020-02-04 | 浙江万纳核电检修有限公司 | Heavy water transmission control equipment of loading and unloading machine |
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