CN2831097Y

CN2831097Y - Floating pressure durable density transformer

Info

Publication number: CN2831097Y
Application number: CN 200520010181
Authority: CN
Inventors: 王鸿昌; 何菁翠
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-10-26
Filing date: 2005-10-26
Publication date: 2006-10-25
Anticipated expiration: 2015-10-26

Abstract

The utility model relates to a floating pressure durable density transformer. The utility model is characterized in that: a lever goes through a bottom board 5 of a meter housing body; the upper end of the lever is connected with a weighing sensor 3 through a stainless steel wire 18 by passing a stainless steel pulley 4; the lower end of lever is connected with an upper guide rod 12 of a measuring dobby 8 through the stainless steel wire by passing the stainless steel pulley. The media isolation is realized by a shaft seal diaphragm 14 between the lever and the bottom of the housing body and the shaft seal diaphragm 14 also serves as the point of support for the accomplishment of the transmission of force moment. The length of the upper part of the lever above the point of support is shorter than the length of the lower part of the lever below the point of support. The meter bottom board installed on one side of the upper part of the lever is provided with an electric magnetic cupula 16 of a power-off attracting lever. There are an upper guide rod and a lower guide rod 11 which are arranged on the measuring dobby. The upper guide rod and the lower guide rod respectively go through an upper guide plate 7 and a lower guide plate 10 which are positioned in a dobby shield 9 and realize the horizontal and vertical position limiting of the measuring dobby. The utility model is provided with the following features: small volume, high precision, low cost and high reliability. It can also avoid the creep of the weighing sensor after long term stress bearing.

Description

The withstand voltage density transmitter of floatage-type

(1), affiliated technical field

The utility model relates to a kind of density measuring instrument, the withstand voltage density transmitter of particularly a kind of floatage-type.

(2), background technology

Technology commonly used at present is to utilize the semi-girder LOAD CELLS to measure the weight of float in liquid, calculates density of liquid.Because float hour, useful signal is too little, and the cost that the general volume of existing product is big, precision is low, improve precision is higher; Because the existence of suspension cable can only be used for open containers or non-pressure vessel, use is restricted simultaneously; And the semi-girder LOAD CELLS itself has plastic creep, so float can not hang on the sensor for a long time, otherwise causes the variation of measurement characteristics, in transportation or change when measuring the place, must pull down float, otherwise cause instrument damage easily.

(3), summary of the invention

The purpose of this utility model just provides that a kind of volume is little, precision is high, the low high withstand voltage density transmitter of floatage-type of reliability of cost.

The purpose of this utility model is to realize by such technical scheme: the withstand voltage density transmitter of a kind of floatage-type includes instrument housing, treatment circuit, LOAD CELLS, measuring sonde, power conversion and measurement float; The measurement float that is arranged in the float guard shield constitutes measuring sonde, and instrument housing is fixed on the top of measuring sonde; It is characterized in that: pass the base plate of instrument housing by lever, the upper end of lever is walked around the stainless steel pulley by the stainless steel steel wire and is connected with LOAD CELLS, and the lower end of lever is walked around the stainless steel pulley by the stainless steel steel wire and is connected with the last guide pole of measuring float; Realize media isolated by shaft-seal diaphragm between lever and the housing bottom and be that fulcrum is finished transmission of torque with it; The above lever upper segment length of described fulcrum is less than segment length under the lever below the fulcrum, thereby realized the amplification of power; The instrument panel of lever upper segment one side is provided with the magnechuck of outage adhesive lever; Measure float and be provided with guide pole and following guide pole, last guide pole and following guide pole pass last guide plate and the lower guide plate that is arranged in the float guard shield respectively, implement to measure float level, vertically spacing.

The utility model is work like this: when will measure certain density of medium, measuring sonde is inserted in the medium that will measure, measure float and lightened by buoyancy, the variation process lever of this power amplifies and is delivered to LOAD CELLS to be measured; The temperature sensor measurement medium temperature realizes the temperature compensation of density measurements, finally forms density signal output.When cutting off the power supply or not needing to measure, the magnechuck truck dead lever is avoided the long-term stressed creep of LOAD CELLS.

Owing to adopted technique scheme, the utlity model has: volume is little, precision is high, cost is low, high reliability features.Press, have in the pressure vessel and can both use in opening, sealing, nothing, owing to adopted magnechuck, the weight of bearing float by magnechuck, thereby in transportation or when measuring the change in place, needn't dismantle float, the long-term plastic creep that also can not cause LOAD CELLS itself that uses.

(4), description of drawings

Description of drawings of the present utility model is as follows:

Fig. 1 is a structural representation of the present utility model;

Among the figure: 1. instrument housing; 2. treatment circuit; 3. LOAD CELLS; 4. pulley; 5. base plate; 6. temperature sensor; 7. go up guide plate; 8. measurement float; 9. float guard shield; 10. lower guide plate; 11. following guide pole; 12. last guide pole; 13. lever hypomere; 14. shaft-seal diaphragm; 15. lever upper segment; 16. magnechuck; 17. power conversion; 18. steel wire;

(5), embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

The withstand voltage density transmitter of floatage-type includes: become and send processing section (instrument housing 1, power conversion 17, treatment circuit 2, LOAD CELLS 3, magnechuck 16, shaft-seal diaphragm 14, lever upper segment 15) as shown in Figure 1; Measuring sonde (float guard shield 9 with holes, temperature sensor 6, lever hypomere 13, measure on the float 8, go up guide pole 12, down guide pole 11, go up guide plate 7, lower guide plate 10); Lever has passed the shaft-seal diaphragm 14 of media isolated effect, and is that fulcrum is realized the moment conversion with shaft-seal diaphragm 14.

In the time of the density of measuring media, measuring sonde is inserted in the medium that will measure, medium enters in the float guard shield 9 by float guard shield 9 with holes, measures float 8 and lightened by buoyancy, and the variation process lever of this power amplifies and is delivered to LOAD CELLS 3 to be measured; Temperature sensor 6 carries out medium temperature to be measured, and realizes the temperature compensation of density measurements, finally forms density signal output, and when cutting off the power supply or not needing to measure, magnechuck 16 truck dead levers are avoided LOAD CELLS 3 long-term stressed creeps.

In the said apparatus, LOAD CELLS 3 is walked around stainless steel pulley 4 by stainless steel steel wire 18 and is connected with the lever upper end, and simultaneously, the lever lower end is walked around the stainless steel pulley by the stainless steel steel wire and is connected with the last guide pole 12 of float.

In the above-described embodiments, temperature sensor (6) is installed in the float guard shield, this sensor is installed on the base plate 5, and its output line is connected with treatment circuit 20.

Claims

1. withstand voltage density transmitter of floatage-type, comprise instrument housing (1), treatment circuit (2), LOAD CELLS (3), power conversion (17), be arranged on the measuring sonde that is made of measurement float (8) in the float guard shield (9), instrument housing (1) is fixed on the top of measuring sonde; It is characterized in that: the base plate (5) that passes instrument housing by lever, its upper end (15) is walked around stainless steel pulley (4) by stainless steel steel wire (18) and is connected with LOAD CELLS (3), and its lower end (13) are walked around the stainless steel pulley by the stainless steel steel wire and are connected with the last guide pole (12) of measuring float (8); Realize media isolated by shaft-seal diaphragm (14) between lever and the housing bottom, the length of the lever upper segment more than described shaft-seal diaphragm (15) is less than the length of the lever hypomere (13) below the shaft-seal diaphragm; The instrument panel of lever upper segment (15) one sides is provided with the magnechuck (16) of outage adhesive lever; Measure float and be provided with guide pole (12) and following guide pole (11), last guide pole and following guide pole pass last guide plate (7) and the lower guide plate (10) that is arranged in the float guard shield (9) respectively.

2. the withstand voltage density transmitter of floatage-type according to claim 1 is characterized in that: temperature sensor (6) is installed in the float guard shield, and this sensor is installed on the base plate (5), and its output line is connected with treatment circuit (20).