CN205879307U - A calibration equipment for pit capacitance level gauge in containment - Google Patents
A calibration equipment for pit capacitance level gauge in containment Download PDFInfo
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- CN205879307U CN205879307U CN201620606634.6U CN201620606634U CN205879307U CN 205879307 U CN205879307 U CN 205879307U CN 201620606634 U CN201620606634 U CN 201620606634U CN 205879307 U CN205879307 U CN 205879307U
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- level gauge
- calibration equipment
- liquid level
- containment
- capacitance
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Abstract
The utility model belongs to a level gauge calibration equipment specifically discloses a calibration equipment for pit capacitance level gauge in containment, and this calibration equipment includes that hyaline tube, base, supporting shoe, fixed block, ground connection piece, scale show strip, liquid level control valve, and the hyaline tube bottom is equipped with the base, and the lateral wall bottom interpolation of hyaline tube has the liquid level control valve, and the hyaline tube top is equipped with supporting shoe, fixed block and ground connection piece in proper order, is equipped with the scale on the hyaline tube outer wall and shows the strip. The device can solve capacitance level gauge's check problem, and the liquid level height of whole range can be accepted to the ground pipe of messenger's level gauge, the on -the -spot service environment of simulation to can reduce radioactive contamination among the validation process.
Description
Technical field
The invention belongs to a kind of liquidometer calibration equipment, be specifically related to a kind of melt pit capacitance level gauge in containment
Calibration equipment.
Background technology
Melt pit in nuclear power plant containment shell be mainly used to collect the radioactive liquid produced in industry spot production process and
Corrosive liquids, the general liquid level using capacitance level gauge to measure melt pit, prevent liquid spill inside melt pit to outside melt pit,
Alpha-contamination situation is caused to occur.
Capacitance level gauge change based on liquid level causes the change of condenser capacitance value to measure.Melt pit container is general
Employing cement material is made, and for the tank body of non-conducting material, now can use the sensor of pipe with ground, namely rod-type electric capacity
Liquidometer, now, cable in ground pipe and ground pipe are respectively as the two poles of the earth of electric capacity.Capacitance variation amount is changed by sensor
Become the signal of relation proportional to liquid level, thus measure the liquid level of melt pit.
The device that capacitance level gauge is verified cannot be provided at present, it is impossible to ensure that the reliability of liquidometer is with accurate
Property, the safe and reliable operation of system and equipment has been buried hidden danger；Meanwhile, liquidometer is chronically in radioactive liquid, liquid level
The ground pipe of meter has contamination in various degree, and the verification to liquidometer causes the biggest difficulty.
Summary of the invention
It is an object of the invention to provide a kind of calibration equipment of melt pit capacitance level gauge in containment, this device
Can solve the problem that the check problem of capacitance level gauge, enable the ground pipe of liquidometer to accept the liquid level of whole range, mould
Intend on-the-spot use environment, and radioactive pollution in checking procedure can be reduced.
Realize the technical scheme of the object of the invention: a kind of calibration equipment of melt pit capacitance level gauge in containment,
This calibration equipment includes transparent tube, base, bracer, fixed block, earthing block, scale show bar, Liquid level adjusting valve, at the bottom of transparent tube
Portion is provided with base, is inserted with Liquid level adjusting valve in the sidewall bottom of transparent tube, transparent tube top be sequentially provided with bracer, fixed block and
Earthing block, transparent tube outer wall is provided with scale show bar.
Described Liquid level adjusting valve receives device also by waste liquid water conservancy diversion with waste liquid and connects.
Described earthing block is connected with grounding body also by earth lead.
The Advantageous Effects of the present invention: by the calibration equipment of the present invention, it is possible to achieve to melt pit electric capacity in containment
Formula liquidometer verifies, and solves such liquidometer and can only carry out, by censorship mode, the problem that verifies in the past, the present invention's
Calibration equipment can realize the rapid verification to liquidometer in industry spot, has saved the high expense needed for liquidometer censorship.
Owing to the calibration equipment of the present invention can be implemented in the industry spot verification to liquidometer, drastically increase liquidometer verification
Work efficiency, provides a great convenience to the verification of melt pit capacitance level gauge in containment.In liquidometer checking procedure, can
To receive the device realization collection to waste liquid by Liquid level adjusting valve and waste liquid, it is to avoid personnel suffer radioactive pollution.To liquid level
After meter verification, calibration equipment can be cleared up, in case radioactive substance is at this by the adnexa that calibration equipment is own
Device accumulates, calibration equipment can be avoided to suffer long-term radioactive pollution.
Accompanying drawing explanation
Fig. 1 be provided by the present invention a kind of in containment the structure of the calibration equipment of melt pit capacitance level gauge show
It is intended to.
In figure: 1. transparent tube, 2. base, a 3. bracer, 4. fixed block, 5. earthing block, 6. measure bar, 7. capacitance type liquid level
Meter, 8. scale show bar, 9. Liquid level adjusting valve, 10. grounding body, 11. earth leads, 12. waste liquids receive device, and 13. waste liquids are led
Flow tube line, 14. liquidometer testers, 15. holding wires.
Detailed description of the invention
With embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of calibration equipment of melt pit capacitance level gauge in containment provided by the present invention, should
Calibration equipment includes that transparent tube 1, base 2, a bracer 3, fixed block 4, earthing block 5, grounding body 10, earth lead 11, scale show
Show that bar 8, Liquid level adjusting valve 9, waste liquid receive device 12 and waste liquid water conservancy diversion pipeline 13.
Being provided with base 2 bottom transparent tube 1, the sidewall bottom of transparent tube 1 leaves hole, and one end of Liquid level adjusting valve 9 is inserted in
In this hole, the other end of Liquid level adjusting valve 9 receives device 12 by waste liquid water conservancy diversion pipeline 13 with waste liquid and connects.Transparent tube 1, the end
Seat 2, Liquid level adjusting valve 9 are the non-conducting material that nonmetallic materials are made, for example with plastics, and bottom the transparent tube 1 and end
Seat 2 is heat-treated to a container, and transparent tube 1 sidewall bottom and Liquid level adjusting valve 9 are heat-treated to one.Transparent tube 1 top is embedded
There are bracer 3 and interference fit between the two, in being embedded in the centre bore of a bracer 3 bottom fixed block 4 and between the two screw thread
Fixing connection, fixed block 4 top is placed with earthing block 5, and earthing block 5 is connected with grounding body 10 by earth lead 11.Support
Block 3, fixed block 4 are nonmetallic materials, and for example with plastics, earthing block 5 is metal material, such as rustless steel.Outside transparent tube 1
Being provided with scale show bar 8 on wall, scale show bar 8 is positioned at above Liquid level adjusting valve 9 and both leave gap；Scale shows
Bar 8 can be bonded on transparent tube 1 outer wall, it is also possible to is directly engraved on transparent tube 1 outer wall.The measurement bar 6 of capacitance level gauge 7 is worn
Cross bracer 3, fixed block 4, the centre bore of earthing block 5 are inserted in transparent tube 1, and measure and pass through screw thread between bar 6 and fixed block 4
Fixing connection.The outfan of capacitance level gauge 7 is connected with the input of liquidometer tester 11 by holding wire 15.
Prop up bracer 3 and fixed block 4 respectively in order to support and fixed capacity formula liquidometer 7.Sidewall bottom in transparent tube 1 stays
Hole, facilitates the installation of Liquid level adjusting valve 9.Earthing block 5 is arranged on fixed block 4, ensures have sufficiently with measurement bar 6 simultaneously
Metal contacts, and the effect of earthing block 5 is to ensure that in checking procedure capacitance level gauge is adequately grounded, thus simulates electricity
The use environment at appearance formula liquidometer 7 scene.Scale show bar 8 is to be shown by fluid level scale on transparent vessel tube wall,
It is easy to observe the change of liquid level when of regulation liquid level.The effect of Liquid level adjusting valve 9 be liquidometer is fixed in container after, note
Enter liquid (generally water), in order to liquid level is adjusted to desired value, need unnecessary with Liquid level adjusting valve 9 containing active
Liquid is flowed into waste liquid by water conservancy diversion pipeline 13 and receives in device 12；As such, it is possible to by the zero degree verifying capacitance level gauge 7
And full scale, reach to verify the purpose of liquidometer.Owing to, in checking procedure, can make to speckle with on chamber wall and Liquid level adjusting valve less
Amount radioactivity, after verification, is rinsed container with clear water, will by Liquid level adjusting valve 9 and waste liquid water conservancy diversion pipeline 13
Waste liquid causes waste liquid and receives device 12, thus avoids the long-term pollution of radioactive material confrontation calibration equipment.
As it is shown in figure 1, a kind of calibration equipment of melt pit capacitance level gauge in containment provided by the present invention
Work process:
1) in capacitance level gauge 7 being installed on this device and fix；
2) with earth lead 11, earthing block 5 is coupled together with grounding body 10, it is ensured that the ground pipe measuring bar 6 fully connects
Ground；
3) one end of waste liquid water conservancy diversion pipeline 13 is coupled together with Liquid level adjusting valve 9, and another by waste liquid water conservancy diversion pipeline 13
One end is placed in waste liquid and receives in device 12；
4) with holding wire 15, capacitance level gauge 7 and liquidometer tester 14 are coupled together；
5) there is no water in transparent tube 1, when i.e. capacitance level gauge 7 is in zero degree；The electric current of capacitance level gauge 7 is by letter
Number line 15 is transferred to liquidometer tester 14, demarcates capacitance level gauge 7 until the electric current of liquidometer tester 14 display is
4mA；
6) in transparent tube 1, inject water, and be target by liquid level in scale show bar 8 and Liquid level adjusting valve 9 adjusting apparatus
Liquid level, even if capacitance level gauge 7 is in full scale；The electric current of capacitance level gauge 7 is transferred to liquidometer school by holding wire 15
Test instrument 14, demarcate capacitance level gauge 7 until the electric current of liquidometer tester 14 display is 20mA；
7) after verification, with water, the transparent tube 1 of device is carried out, and waste liquid by Liquid level adjusting valve 9 and is given up
Liquid water conservancy diversion pipeline 13 is guided to waste liquid and receives in device 12.
Above in conjunction with drawings and Examples, the present invention is explained in detail, but the present invention is not limited to above-mentioned enforcement
Example, in the ken that those of ordinary skill in the art are possessed, it is also possible to make on the premise of without departing from present inventive concept
Go out various change.The content not being described in detail in the present invention all can use prior art.
Claims (3)
1. the calibration equipment of melt pit capacitance level gauge in containment, it is characterised in that: this calibration equipment includes
Bright pipe (1), base (2), bracer (3), fixed block (4), earthing block (5), scale show bar (8), Liquid level adjusting valve (9), thoroughly
Bright pipe (1) bottom is provided with base (2), is inserted with Liquid level adjusting valve (9) in the sidewall bottom of transparent tube (1), and transparent tube (1) top depends on
Secondary being provided with props up a bracer (3), fixed block (4) and earthing block (5), and transparent tube (1) outer wall is provided with scale show bar (8).
A kind of calibration equipment of melt pit capacitance level gauge in containment the most according to claim 1, its feature exists
In: described Liquid level adjusting valve (9) receives device (12) also by waste liquid water conservancy diversion (13) with waste liquid and connects.
A kind of calibration equipment of melt pit capacitance level gauge in containment the most according to claim 2, its feature exists
In: described earthing block (5) is connected with grounding body (10) also by earth lead (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620606634.6U CN205879307U (en) | 2016-06-20 | 2016-06-20 | A calibration equipment for pit capacitance level gauge in containment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620606634.6U CN205879307U (en) | 2016-06-20 | 2016-06-20 | A calibration equipment for pit capacitance level gauge in containment |
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| Publication Number | Publication Date |
|---|---|
| CN205879307U true CN205879307U (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620606634.6U Active CN205879307U (en) | 2016-06-20 | 2016-06-20 | A calibration equipment for pit capacitance level gauge in containment |
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| CN (1) | CN205879307U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525568A (en) * | 2016-06-20 | 2017-12-29 | 江苏核电有限公司 | A kind of calibration equipment for melt pit capacitance level gauge in containment |
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2016
- 2016-06-20 CN CN201620606634.6U patent/CN205879307U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525568A (en) * | 2016-06-20 | 2017-12-29 | 江苏核电有限公司 | A kind of calibration equipment for melt pit capacitance level gauge in containment |
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