CN202928636U

CN202928636U - Measuring appliance of floater type metal tube rotameter of porous plate

Info

Publication number: CN202928636U
Application number: CN 201220619288
Authority: CN
Inventors: 刘文凤; 袁中林; 郭永刚; 赵明权
Original assignee: DANDONG TONGBO ELECTRIC MACHINE GROUP Co Ltd
Current assignee: DANDONG TONGBO ELECTRIC MACHINE GROUP Co Ltd
Priority date: 2012-11-21
Filing date: 2012-11-21
Publication date: 2013-05-08
Anticipated expiration: 2022-11-21

Abstract

The utility model provides a measuring appliance of a floater type metal tube rotameter of a porous plate. The measuring appliance of the floater type metal tube rotameter of the porous plate is characterized by consisting of a measuring tube (1), a floater upper limiting base (2), a floater guide cylinder (8) of a measurement porous plate, and a center floater (5); and the floater guide cylinder (8) of the measurement porous plate consists of a tube cylinder (81), the measurement porous plate (83) at the upper end of the tube cylinder (81), and a floater lower limiting base (82) at the lower end of the tube cylinder (81). The measuring appliance of the floater type metal tube rotameter of the porous plate is simple in structure; the floater guide cylinder (8) of the measurement porous plate combines a lower limiting base of the floater (5) with the measurement porous plate together; the measuring appliance of the floater type metal tube rotameter of the porous plate is easy to machine, and the coaxiality requirement can be ensured; the measuring appliance of the floater type metal tube rotameter of the porous plate sufficiently ensures that the floater (5) randomly moves up and down; and the accuracy and the precision of the measurement can be ensured.

Description

The measuring appliance of orifice plate float-type metal pipe float flow meter

Technical field

The utility model relates to flowmeter, particularly orifice plate float-type metal pipe float flow meter.

Background technology

Metal pipe float flow meter is the instrument for flow measurement, can measure liquid, gas and steam, especially for the flow measurement of low discharge, low reynolds number, has more unique superiority than other flowmeter.Metal pipe float flow meter is comprised of measuring appliance and converter two parts, and the measuring appliance of metal pipe float flow meter is divided into two kinds of orifice plate float-type and Taper Pipe float-types.

The principle of work of orifice plate float-type metal pipe float flow meter is: medium flows into from the lower end of measuring organ pipe, effect due to fluid, the float upper and lower end face produces a differential pressure, and this differential pressure is the raising force of float, when the lift that is subject to when float and float gravitational equilibrium, float rests on a certain position, magnet steel coupling on float Interior permanent magnet and converter shaft by Electromagnetic Coupling System, is directly changed into flow value, indicated by pointer and index dial, or output 4-20mA current signal.

The utility model relates to the measuring appliance of orifice plate float-type metal pipe float flow meter.

The measuring appliance of prior art orifice plate float-type metal pipe float flow meter as shown in Figure 1, by measuring tube 1, be arranged on float upper limit seat 2 and collar 21 on measuring tube 1 upper port, be arranged on the measuring diaphragm 3 at measuring tube 1 middle part, be arranged on the float lower limit seat 4 on measuring tube 1 lower port, center float 5 is arranged in measuring diaphragm 3, the upper lower guide rod of center float 5 respectively with float upper limit seat 2 and float lower limit seat 4 mix proportions, float upper limit seat 2 and float lower limit seat 4 centerings flighty and impatient sub 5 play a part the guiding and spacing.Float lower limit seat 4 is welded on measuring tube 1 lower port, be movable part, it is clearance fit that float upper limit seat 2 is arranged between the stop portion of measuring tube 1 upper end and measuring tube 1, but belongs to the fine motion part, measuring diaphragm 3 is welded on measuring tube 1 middle part, is also movable part.For make center float 5 can be in measuring tube the up and down flexible operation, just must guarantee the right alignment requirement after float upper limit seat 2, measuring diaphragm 3, center float 5, more than 4 parts erection welding of float lower limit seat.Facts have proved, will guarantee that right alignment is difficult to after a plurality of securing parts are assembled and between a movable piece on technique.Center float 5 after assembling usually can not move flexibly because right alignment is poor, has increased the difficulty of assembling, and solution commonly used is the guide pole up and down of maintenance center float 5, and its external diameter is diminished.In addition; because the tolerance clearance between measuring diaphragm 3 internal orifice dimensions and float 5 external diameters is very little; and measuring diaphragm 3 internal orifice dimensions are sharp edge of chamfering; if right alignment is poor, the friction that in use often can bump between float 5 and measuring diaphragm 3 endoporus, so; after long-term the use; measuring diaphragm 3 endoporus wearing and tearing are accelerated in meeting, make the gap become large, cause measuring the reduction that lacks or occur measuring accuracy zero point.

The utility model content

The purpose of this utility model is to improve for above-mentioned prior art deficiency, provides a kind of rational in infrastructure, good manufacturability, the measuring appliance of the orifice plate float-type metal pipe float flow meter of highly versatile.

the utility model is by measuring tube 1, float upper limit seat 2, measuring diaphragm floater guiding cylinder 8, center float 5 forms, float upper limit seat 2 is comprised of set collar 23 and center socket 24 two parts, float upper limit seat 2 is arranged on measuring tube 1 upper port and by collar 21 by set collar 23 and fixes, but belong to the fine motion part, measuring diaphragm floater guiding cylinder 8 is by socket 81, the measuring diaphragm 83 of socket 81 upper ends, the float lower limit seat 82 of socket 81 lower ends consists of, measuring diaphragm floater guiding cylinder 8 is welded and fixed the middle part that is arranged in measuring tube 1, center float 5 is arranged in the measuring diaphragm 83 of measuring diaphragm floater guiding cylinder 8, the lower guide rod 52 of center float 5 is slidably matched with the float lower limit seat 82 of measuring diaphragm floater guiding cylinder 8 lower ends, the top guide bar 51 of center float 5 is slidably matched with the center socket 24 of float upper limit seat 2,

The utility model is provided with gland bonnet 25 in the upper end of the center of upper limit seat 2 socket 24 on the said structure basis, the center socket 24 that is fixed with damping piston circle 26 and upper limit seat 2 in the upper end of the top guide bar 51 of center float 5 is slidably matched, namely forming damping coordinates, be used for gas medium is measured, therefore also simplified the measuring appliance structure style of orifice plate float-type metal pipe float flow meter, convenient production and use.

the utility model is simple in structure, rationally, play measurement, spacing, the measuring diaphragm floater guiding cylinder 8 of guide effect makes up lower limit seat and the measuring diaphragm of float 5 together, its upper end is measured the spacing pilot hole 82 ' of mouth 83 ' and lower end and is processed on a part, be easy to guarantee its right alignment requirement on technique, it is welded in measuring tube 1, it coordinates with the float upper limit seat 2 that is arranged on measuring tube 1 upper end and mutually keeps coaxial being easy to guarantee, reliability and the accuracy requirement of product have been improved, can guarantee fully that center float 5 moves up and down freely, accuracy and the precision measured have been guaranteed.

Description of drawings

Fig. 1 is the prior art structural representation.

Fig. 2 is the utility model example structure schematic diagram.

Fig. 3 is another example structure schematic diagram of the utility model.

Embodiment

the utility model is by measuring tube 1, float upper limit seat 2, measuring diaphragm floater guiding cylinder 8, center float 5 forms, float upper limit seat 2 is comprised of set collar 23 and center socket 24 two parts, float upper limit seat 2 is arranged on measuring tube 1 upper port and by collar 21 by set collar 23 and fixes, measuring diaphragm floater guiding cylinder 8 is by socket 81, the measuring diaphragm 83 of socket 81 upper ends, the float lower limit seat 82 of socket 81 lower ends consists of, measuring diaphragm floater guiding cylinder 8 is welded and fixed the middle part that is arranged in measuring tube 1, center float 5 is arranged in the center pit 83 ' of measuring diaphragm 83 of measuring diaphragm floater guiding cylinder 8, the lower guide rod 52 of center float 5 is slidably matched with the center pit 82 ' of the float lower limit seat 82 of measuring diaphragm floater guiding cylinder 8 lower ends, the top guide bar 51 of center float 5 is slidably matched with the center socket 24 of float upper limit seat 2,

As shown in accompanying drawing 3 embodiment, when being used for the gas medium use, upper end at the center socket 24 of float upper limit seat 2 is provided with gland bonnet 25, upper end at the top guide bar 51 of center float 5 is fixed with damping piston circle 26, the upper end that damping piston circle 26 is arranged on the top guide bar 51 of center float 5 is fixed by snap ring 28, and damping piston circle 26 is slidably matched with the center socket 24 of upper limit seat 2.

Claims

1. the measuring appliance of orifice plate float-type metal pipe float flow meter, it is characterized in that by measuring tube (1), float upper limit seat (2), measuring diaphragm floater guiding cylinder (8), center float (5) forms, float upper limit seat (2) is comprised of set collar (23) and center socket (24) two parts, float upper limit seat (2) is arranged on measuring tube (1) upper port and by collar (21) by set collar (23) and fixes, measuring diaphragm floater guiding cylinder (8) is by socket (81), the measuring diaphragm (83) of socket (81) upper end, the float lower limit seat (82) of socket (81) lower end consists of, measuring diaphragm floater guiding cylinder (8) is welded and fixed and is arranged in measuring tube (1), center float (5) is arranged in the measuring diaphragm (83) of measuring diaphragm floater guiding cylinder (8), the lower guide rod (52) of center float (5) is slidably matched with the float lower limit seat (82) of measuring diaphragm floater guiding cylinder (8) lower end, the top guide bar (51) of center float (5) is slidably matched with the center socket (24) of float upper limit seat (2).

2. the measuring appliance of orifice plate float-type metal pipe float flow meter according to claim 1, it is characterized in that being provided with gland bonnet (25) in the upper end of the center socket (24) of float upper limit seat (2), the center socket (24) that is fixed with damping piston circle (26) and upper limit seat (2) in the upper end of the top guide bar (51) of center float (5) is slidably matched.