CN2300095Y

CN2300095Y - Shaft-position level sensor

Info

Publication number: CN2300095Y
Application number: CN 97208505
Authority: CN
Inventors: 关锡鸿; 郭忠领
Original assignee: HUANYU SCIENCE AND TECHNOLOGY DEVELOPMENT Co HAIZHU DISTRICT GUANGZHOU
Current assignee: HUANYU SCIENCE AND TECHNOLOGY DEVELOPMENT Co HAIZHU DISTRICT GUANGZHOU
Priority date: 1997-01-02
Filing date: 1997-01-02
Publication date: 1998-12-09
Anticipated expiration: 2007-01-02

Abstract

The utility model discloses a shaft-angle level sensor, used for measuring the level of various liquid. The shaft-angle level sensor is composed of a suspension cable, a balance weight, a floater, etc. A proportional pulley is fixed at one end of a rotary shaft, and the other end of the rotary shaft is connected with a multi-turn potentiometer. The multi-turn potentiometer is fixed on a base through a support frame, and the multi-turn potentiometer is controlled to rotate synchronously by the proportional pulley. When the level changes, the floater rises and falls and the floater drives the pulley to control the multi-turn potentiometer to rotate synchronously. The change of the level is converted to electrical signals to output and is recorded by a secondary meter. The numerical value of the level can be accurately measured. The utility model has the advantages of simple structure, stable working condition and low cost.

Description

The shaft angle liquid level sensor

The utility model relates to a kind of liquid sensor, and particularly a kind of shaft angle liquid level sensor can be used for measuring the liquid level of various liquid such as the variation of water level, belongs to the measurement instrument class.

From the seventies, in some hydraulic engineering flood control systems at home, gradually adopted radio telemetry system, the rain sensor that uses that matches with it is tipping bucket type, liquid level sensor is the mechanical coding formula, and the two is complex structure and cost height all, and functional reliability is lower.

The purpose of this utility model provide a kind of simple in structure, with low cost, functional reliability is good, the shaft angle liquid level sensor that can be used with line transmission system.

The purpose of this utility model is achieved in that the device of liquid level sensor comprises suspension cable 9, balance bob 10, float 11 etc., ratio pulley 3 is fixed on an end of rotating shaft 1, the other end of rotating shaft 1 is connecting multiturn potentiometer 5, multiturn potentiometer is fixed on the base 7, is rotated by ratio pulley 3 CONTROLLED POTENTIAL devices.

Because the utility model adopted the shaft angle transmission manner, promptly be when liquid level rises or descend, float 11 also has to rise to have and falls, and rotates thereby drive ratio pulleys 3 by suspension cable 9, controls multiturn potentiometer 5 simultaneously and rotates variations.At this moment, only need configure the diameter of ratio pulley (3) and the initial position of multiturn potentiometer, the angle that the rising or the decline of liquid can be converted into pulley changes, be converted into electric signal by potentiometer again, like this, only need obtain the variation of electric signal, just can measure the variation of liquid level exactly.Of the present utility model being skillfully constructed, simple and practical, stability and anti lightning bombardment performance are all better, are a kind of survey instruments of a new generation.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is ratio pulley and multiturn potentiometer assembly structure synoptic diagram;

Fig. 2 is ratio pulley and multiturn potentiometer assembling major axis formula structural representation;

Fig. 3 is the work synoptic diagram of accumulative total formula shaft angle rain sensor;

Fig. 4 is the work synoptic diagram of shaft angle level sensor.

Multiturn potentiometer 5 can be contained on the support 6 of a L type, support is fixed on the base 7, a ratio pulley 3 just is housed on the shaft of this potentiometer itself, compress with nut 2, when this small sheave is driven by float 11, the axle of multiturn potentiometer 5 is also followed synchronous rotation, so the electric signal of output will change.If adopt the major axis structure in actual applications, then on base 7, it is a pair of that the support 6A that tape spool holds has been installed, this to support on, rotating shaft 1 is housed, an end of rotating shaft is equipped with ratio pulley 3, and compresses with nut 2; The other end of rotating shaft, be equipped with multiturn potentiometer 5, multiturn potentiometer 5 is installed on the support 6 that is fixed on base 7, with a spring coupling 8 axle of rotating shaft with multiturn potentiometer is linked up again, potentiometer just can be followed the ratio pulley and rotated synchronously like this, and the signal of output will change thereupon.

As angular transducer being applied to rainfall when metering, can be made into accumulative total formula shaft angle rain sensor, its principle of work is: when rainfall took place, what rainwater 12 fell into a circle held rain mouth 13, advances to deposit in the rain tube 15 along 14 leakages of a sebific duct then.Deposit the rain tube above a multiturn potentiometer 5 is installed, load onto a ratio pulley 3 in the rotating shaft 1 of potentiometer 5 again, hang on the groove hole of pulley with a suspension cable 9 then, the two ends of suspension cable are linking balance bob 10 and float 11 respectively, float increase with rainwater in tube is risen, thereby driven pulley, also just driven potentiometer certainly and together rotated.The different angles that the information of rainfall amount just can potentiometer change to detect in the different electrical signals of being sent and obtain like this.When the water yield in depositing the rain tube is accumulated to certain altitude, can produce siphon and emptying automatically by U trap 16, rainfall starts anew again to add up.

When angular transducer is applied to level measuring, can be made into the shaft angle level sensor, its principle of work is: measure the river at needs, the river, building one stilling well 18 on the bank 21 of lake or reservoir level, in import, build up a water level platform 17, on platform, lay a shaft angle liquid level sensor, on the ratio pulley 3 of sensor, hang up a suspension cable 9, the two ends of suspension cable are linking balance bob 10 and float 11 respectively, when water level 19 changes, water surface elevation in the well is because the also variation synchronously with SEA LEVEL VARIATION of the effect of communicating pipe 20, the float that floats on the surface also has to rise to have and falls, thereby drive the multiturn potentiometer 5 be contained on the angular transducer axle 1 with ratio pulley 3 synchronous rotation change, water level just can be become electric signal and export.

The shaft angle liquid level sensor not only can be applicable to survey water level, rainfall, also can be applicable to measure the liquid level of other liquid such as oil mass etc.

Claims

1, a kind of shaft angle liquid level sensor, comprise suspension cable (9), balance bob (10), float (11), it is characterized in that: ratio pulley (3) is fixed on an end of rotating shaft (1), the other end of rotating shaft (1) is fastened on the multiturn potentiometer (5) on the base (7), and multiturn potentiometer (5) is rotated by ratio pulley (3) control.

2, a kind of shaft angle liquid level sensor according to claim 1, it is characterized in that: multiturn potentiometer (5) is fixed on the base (7) with support (6).

3, a kind of shaft angle liquid level sensor according to claim 1 is characterized in that: multiturn potentiometer (5) rotates synchronously with ratio pulley (3) under the control of ratio pulley (3).

4, a kind of shaft angle liquid level sensor according to claim 1, it is characterized in that: ratio pulley (3) can directly be fixed in the rotating shaft of multiturn potentiometer (5), also can be fixed in the rotating shaft (1), and the rotating shaft of rotating shaft (1) with multiturn potentiometer (5) be coupled together by spring coupling (8).