CN2323358Y - Steam flowmeter - Google Patents

Abstract

The utility model provides a steam flowmeter used for measuring the steam flow. The casing body of the main body of the flowmeter connected with an orifice plate is connected with the orifice plate components connected with a lateral cover plate. The inner part of the casing body of the main body is provided with a nozzle to drive an impeller wheel to drive a rotor shaft to rotate, and the lower part of the casing body is connected with a damping box with the bottom part connected with a flange plate. The communication transmitting plate with magnetic steel connected with the lower part of the rotor shaft and the damping vane connected with the middle part of the rotor shaft are both positioned in the damping box. The casing body of the main body is connected with a pressure sensor connected to a bottom cover via a connecting pipe, and the pressure sensor and a flow signal receiver are separately connected with a wire connection port.

Description

A kind of steam-flow meter

The utility model relates to gauging instrument, especially a kind of instrument that is used to measure steam flow.

The flow-dividing rotor type steam-flow meter of prior art adopts physical construction fully, when saturated vapour or little superheated vapor are flowed through pipeline, part steam is by being connected in the orifice plate of body housing, and another part is through the throttling bodies tap hole, steam promotes the impeller rotation, impeller drives the armature spindle rotation, and drives one group of gear reduction rotation by gear shaft, closes by the magnetic lotus root rotating speed is delivered to the indicator for displaying data.When the vapor pressure in the pipeline changes, carry out dosage compensation by the radius that changes indicator internal friction wheel and frictional disk, because complex structure, the failure rate height when changing orifice plate, must be pulled down instrument from jet chimney, maintenance is inconvenience very.

It is simple that the purpose of this utility model provides a kind of physical construction, reliable and change orifice plate steam-flow meter easily.

The purpose of this utility model can realize by following measure: the body housing that is connected with orifice plate is connected with the orifice plate assembly that is connected with side cover plate, there is the nozzle drive impeller to drive the armature spindle rotation in the body housing, the body housing is connected with the damping case that the bottom is connected with ring flange down, the armature spindle bottom connects sender set and middle part connection damping vane that magnet steel is housed and all is arranged in the damping case, end cover is connected in the ring flange below, the body housing joins by connecting pipe and the pressure transducer that is connected in end cover, and pressure transducer and the signal receiver that is positioned at the ring flange outside connect with the connection jaws that is connected in ring flange respectively.

The purpose of this utility model also can realize by following measure: the body housing that is connected with orifice plate is connected with trip bolt with the orifice plate assembly.

The utlity model has following advantage:

1, do not establish reducing gear and indicator, simple in structure, reduced fault in service and taken place, production run is reliable.

2, can on pipeline, directly change orifice plate, very convenient.Concrete replacing method is: take side cover plate apart, unscrew the trip bolt of fastener hole board component, just can open and change orifice plate.

3, the flow signal receiver imports flow signal into secondary instrument by connection jaws, and simultaneously, change value of pressure is by pressure transducer, connection jaws input secondary instrument, and secondary instrument through the single-chip microcomputer computing, shows instantaneous delivery and integrated flow with two signals.

Fig. 1 is an embodiment synoptic diagram of the present utility model;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is that the A-A of Fig. 1 is to synoptic diagram;

Fig. 4 is user mode figure of the present utility model.

Wherein: 1-side cover plate, 2-orifice plate assembly, 4-impeller, the 5-nozzle, 6-damping case, cover at the bottom of the 7-, 8-body housing, 9-connecting pipe, 10-signal receiver, the 11-connection jaws, 12-ring flange, 13-pressure transducer, the 14-magnet steel, 15-sender set, 16-damping vane, the 17-armature spindle, 18, the 19-trip bolt, the 20-secondary instrument.

Claims (2)

1, a kind of steam-flow meter, it is characterized in that the body housing (8) that is connected with orifice plate is connected with the orifice plate assembly (2) that is connected with side cover plate (1), there is nozzle (5) drive impeller (4) to drive armature spindle (17) rotation in the body housing (8), body housing (8) is connected with the damping case (6) that the bottom is connected with ring flange (12) down, armature spindle (17) bottom connects sender set (15) and middle part connection damping vane (16) that magnet steel (14) are housed and all is arranged in damping case (6), end cover (7) is connected in ring flange (12) below, body housing (8) joins by connecting pipe (9) and the pressure transducer (13) that is connected in end cover (7), pressure transducer (13) and be positioned at the outside signal receiver (10) of ring flange (12) and connect with the connection jaws that is connected in ring flange (12) (11) respectively.

2, a kind of steam-flow meter according to claim 1 is characterized in that the body housing (8) that is connected with orifice plate is connected with trip bolt (18,19) with orifice plate assembly (2).

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