CN2315545Y - Multi-point thermal effect level meter - Google Patents
Multi-point thermal effect level meter Download PDFInfo
- Publication number
- CN2315545Y CN2315545Y CN 97228436 CN97228436U CN2315545Y CN 2315545 Y CN2315545 Y CN 2315545Y CN 97228436 CN97228436 CN 97228436 CN 97228436 U CN97228436 U CN 97228436U CN 2315545 Y CN2315545 Y CN 2315545Y
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- heating tube
- thermal effect
- liquid level
- utility
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Abstract
The utility model discloses a Liquid level measurer, particularly a multi-point thermal effect level meter, comprising a thermal effect level sensor and a secondary instrument. The utility model is characterized in that thermocouples which are detecting elements are arranged on the outer wall of a heating pipe at different heights. The utility model has the advantages of simple manufacturing technique and reliable level indication; the utility model also has the advantages that the thermocouples can be easily replaced after damage, and the positions of the thermocouples can be adjusted according to the requirement of level monitoring. The utility model is very suitable for monitoring levels of reactors and for monitoring levels in pressure vessels of thermal power plants.
Description
The utility model relates to a kind of liquid level emasuring device, is a kind of multiple spot thermal effect liquid level gauge specifically.
In therrmodynamic systems such as pressurized water reactor, cogeneration plant, voltage stabilizer or other pressure vessel are arranged all usually.In order to ensure the safe operation of pressure system, in the voltage stabilizer equal pressure container, all be equiped with the level monitoring instrument.The instrument kind that is used for level monitoring is a lot, and fixing point type liquid level gauge is wherein a class as remote level indicator, machinery-optical detector, thermal effect liquid level sensor etc.Because in some pressure system, such as in the reactor pressure system, the ceramic electrode of remote level indicator is easy " efflorescence " in high-temperature high pressure water, and power up the commissure, back because electrochemical corrosion, cause electrode life extremely short, and non-conductive owing to fluorine Lyons liquid in Experiment of Thermophysics loop, fluorine Lyons, so remote level indicator is inapplicable.Because the seal request of reactor system, and optical element easily adsorbs impurity and influences detection, thereby machinery-optical detector is also inapplicable.The thermal effect liquid level sensor can all adopt material and element commonly used in the reactor, does not have pottery " efflorescence " and galvanic corrosion problem, also needn't consider irradiance problems, and serviceable life is very long, so it relatively is fit to the level monitoring of above-mentioned pressure vessel." in-pile instrument of nuclear reactor " P84 page or leaf that in August, 1977, the Atomic Energy Press published discloses a kind of " thermal effect liquid level sensor ", as shown in Figure 2.This sensor will be surveyed sensitive element-thermopair and be arranged in the heating tube, make with heating tube integral body, its shortcoming is the manufacturing process complexity, difficulty is big, cost is high, and owing to thermopair is located in the heating tube, can't change after damaging, can not require to adjust the position of thermopair according to level monitoring.
The purpose of this utility model is to provide a kind of manufacturing process simple, easy to maintenance, has the multiple spot thermal effect liquid level gauge of versatility.
The utility model is achieved in that a kind of multiple spot thermal effect liquid level gauge, it comprises by thermopair, heating tube, the inorganic insulating material of filling in heating tube and the thermal effect liquid level sensor and the secondary instrument that are arranged on the electric heater composition in the inorganic insulating material, the extension line of thermopair and electric heater is drawn respectively from the heating tube sealed end and is connected with feed cable with plug connector, plug connector is connected with secondary instrument through signal cable, wherein, said thermopair is arranged on the differing heights place of heating tube outer wall, the sealed end of heating tube is provided with the ball face sealing plate, and it is connected with flange.
Advantage of the present utility model is: the thermopair as detecting element is arranged on the outer wall of heating tube, and be provided with a plurality of thermopairs at heating tube outer wall differing heights place, form multiple spot thermal effect liquid level sensor, multiple spot thermal effect liquid level sensor changes the split manufacturing into by the integral body manufacturing, manufacturing process is simple, greatly reduce manufacturing cost, and at non-nuclear with under the situation, after damaging, thermopair can change again, easy to maintenance, can require to adjust the welding position of thermopair according to level gauging, the liquid level indication is reliable, is highly suitable for the level monitoring in reactor and the cogeneration plant's pressure vessel.
Now in conjunction with the accompanying drawings and embodiments the utility model is done specific descriptions:
Fig. 1 is the utility model structural representation;
Fig. 2 is existing thermal effect liquid level sensor structural representation.
As shown in Figure 1, a kind of multiple spot thermal effect liquid level gauge, it comprises thermal effect liquid level sensor and secondary instrument 11.The thermal effect liquid level sensor is by heating tube 4, the inorganic insulating material 3 of filling in heating tube 4, the electric heater 2 that is located in the inorganic insulating material 3 is formed with the thermopair 1 that is welded on heating tube 4 outer wall differing heights places, and the sealed end of heating tube 4 is welded with ball face sealing plate 7, and it is connected with flange.The extension line of thermopair 1 and electric heater 2 is drawn respectively from the sealed end of heating tube 4 and is connected with feed cable 8 with plug connector 9, and plug connector 9 is connected with secondary instrument 11 through signal cable 10.According to the number that requires sweating heat galvanic couple 1 of level monitoring, the outer wall differing heights place at heating tube 4 in the present embodiment is welded with 9 thermopairs 1 altogether.Thermopair 1 adopts armoured thermocouple.Electric heater 2 is Ni-Cr or Ni-Cr-Fe segmentation spiral resistance wire.Inorganic insulating material 3 is MgO.Heating tube 4 is a stainless-steel tube, and its selection and manufacturing technology require all the condition with reference to presurized water reactor loop voltage stabilizer heating, but heating power is significantly less than heating, and the caliber of heating tube is not more than reactor control rod guide pipe caliber.So both guaranteed that long-term use can not break or blow, and can guarantee that again the thermal effect liquid level sensor had the better detection performance.Secondary instrument is a known equipment.In order to protect thermopair 1, can overlap a steel porous protection tube 6 in the outside of heating tube 4, its bottom is provided with a cross supporting frame 5, and heating tube 4 bottoms are stuck on this cross supporting frame 5.
During use, with the multiple spot thermal effect liquid level sensor pressure vessel of packing into, in reactor core, voltage stabilizer, cogeneration plant's steam drum etc., connect with the mains, according to the level monitoring requirement, the liquid level signal that thermopair is measured, by signal cable input secondary instrument, secondary instrument adopts the indication of dual-colored LED luminous point, show liquid level by light beam, and be provided with the analog quantity output and the output of reporting to the police, can image indicate liquid level reliably, and can send alerting signal.The utility model is through repeatedly operational test, and uses in loop, fluorine Lyons, and is respond well, and the liquid level indication is reliable.
Claims (2)
1. multiple spot thermal effect liquid level gauge, it comprises by thermopair (1), heating tube (4), filling in heating tube (4) inorganic insulating material (3) and be arranged on thermal effect liquid level sensor and the secondary instrument (11) that the electric heater (2) in the inorganic insulating material (3) is formed, the extension line of thermopair (1) and electric heater (2) is drawn respectively from the sealed end of heating tube (4) and is connected with feed cable (8) with plug connector (9), plug connector (9) is connected with secondary instrument (11) through signal cable (10), it is characterized in that: thermopair (1) is arranged on heating tube (4) outer wall differing heights place, the sealed end of heating tube (4) is welded with ball face sealing plate (7), and it is connected with flange.
2. according to the said multiple spot thermal effect of claim 1 liquid level gauge, it is characterized in that: be with steel porous protection tube (6) in the outside of heating tube (4), its bottom is provided with cross supporting frame (5), and heating tube (4) bottom is stuck on this cross supporting frame (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97228436 CN2315545Y (en) | 1997-10-22 | 1997-10-22 | Multi-point thermal effect level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97228436 CN2315545Y (en) | 1997-10-22 | 1997-10-22 | Multi-point thermal effect level meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2315545Y true CN2315545Y (en) | 1999-04-21 |
Family
ID=33941592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97228436 Expired - Lifetime CN2315545Y (en) | 1997-10-22 | 1997-10-22 | Multi-point thermal effect level meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2315545Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200462A (en) * | 2011-03-26 | 2011-09-28 | 宁波奥崎自动化仪表设备有限公司 | Segmented heating type thermocouple liquid level sensor |
| CN103196517A (en) * | 2013-03-14 | 2013-07-10 | 济南铁路天龙高新技术开发有限公司 | Hydraulic point machine oil tank oil level monitoring alarm device |
| CN104236671A (en) * | 2014-09-09 | 2014-12-24 | 中国恩菲工程技术有限公司 | Nucleon liquid level protection device, nucleon liquid level meter and container for use in pressure leaching |
| CN106500798A (en) * | 2016-12-16 | 2017-03-15 | 宁波奥崎自动化仪表设备有限公司 | A kind of section heating type multipoint thermocouple level sensor by heat-conducting block heat conduction |
| CN106643976A (en) * | 2017-03-16 | 2017-05-10 | 北京晨淼科技有限公司 | Intelligent temperature difference liquid level meter system based on thermocouple temperature measurement principle and realizing method thereof |
| CN109073443A (en) * | 2016-04-21 | 2018-12-21 | 惠普发展公司，有限责任合伙企业 | Overmolded fluid level sensor and the method for forming it |
| CN109564126A (en) * | 2016-07-21 | 2019-04-02 | 惠普发展公司，有限责任合伙企业 | Liquid level sensing |
-
1997
- 1997-10-22 CN CN 97228436 patent/CN2315545Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200462A (en) * | 2011-03-26 | 2011-09-28 | 宁波奥崎自动化仪表设备有限公司 | Segmented heating type thermocouple liquid level sensor |
| CN102200462B (en) * | 2011-03-26 | 2013-10-02 | 宁波奥崎自动化仪表设备有限公司 | Segmented heating type thermocouple liquid level sensor |
| CN103196517A (en) * | 2013-03-14 | 2013-07-10 | 济南铁路天龙高新技术开发有限公司 | Hydraulic point machine oil tank oil level monitoring alarm device |
| CN104236671A (en) * | 2014-09-09 | 2014-12-24 | 中国恩菲工程技术有限公司 | Nucleon liquid level protection device, nucleon liquid level meter and container for use in pressure leaching |
| CN104236671B (en) * | 2014-09-09 | 2018-03-20 | 中国恩菲工程技术有限公司 | Nucleon liquid level protection device, nucleon liquid level gauge and the container for pressure leaching |
| CN109073443A (en) * | 2016-04-21 | 2018-12-21 | 惠普发展公司，有限责任合伙企业 | Overmolded fluid level sensor and the method for forming it |
| CN109073443B (en) * | 2016-04-21 | 2021-04-06 | 惠普发展公司，有限责任合伙企业 | Overmolded fluid level sensor and method of forming the same |
| CN109564126A (en) * | 2016-07-21 | 2019-04-02 | 惠普发展公司，有限责任合伙企业 | Liquid level sensing |
| CN106500798A (en) * | 2016-12-16 | 2017-03-15 | 宁波奥崎自动化仪表设备有限公司 | A kind of section heating type multipoint thermocouple level sensor by heat-conducting block heat conduction |
| CN106500798B (en) * | 2016-12-16 | 2024-01-05 | 宁波奥崎自动化仪表设备有限公司 | Sectional heating type multi-point thermocouple liquid level detector conducting heat through heat conducting block |
| CN106643976A (en) * | 2017-03-16 | 2017-05-10 | 北京晨淼科技有限公司 | Intelligent temperature difference liquid level meter system based on thermocouple temperature measurement principle and realizing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |