CN201680861U

CN201680861U - High-precision flow metering device suitable for dreggy liquid

Info

Publication number: CN201680861U
Application number: CN2010201648023U
Authority: CN
Inventors: 董永胜; 侯振岐
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-16
Filing date: 2010-04-16
Publication date: 2010-12-22
Anticipated expiration: 2020-04-16

Abstract

A high-precision flow metering device suitable for dreggy liquid relates to a flowmeter and particularly relates to a high-precision flow metering device suitable for dreggy liquid. Flange plates (1) at two ends of the metering device are connected with an adaptive straight pipe section, an inlet of an intermediate filter (2) is connected with the straight pipe section, and an outlet of the filter (2) is connected with the flowmeter (5) via the straight pipe section provided with a rectifier (3). To bring convenience for assembling, disassembling and maintaining the flowmeter (5), two ends of the flowmeter (5) are movable joints, the flowmeter (5) is locked via nuts after a rubber gasket is mounted, and the whole device is located on a horizontal surface, thereby guaranteeing metering precision of the flowmeter. In consideration of convenient frequency assembling, disassembling, cleaning and replacing of a filter screen (10) in the field condition, the flow metering device is provided with a sealing cover which can be assembled and disassembled fast, thereby bringing great convenience to operation of field workers and simultaneously ensuring metering precision of the flowmeter. The high-precision flow metering device can be widely used for metering liquid with high added value precisely in industries such as petroleum, chemical engineering, coal and the like.

Description

Be applicable to the high-precision flow metering device of dirty liquid

Technical field

The high-precision flow metering device that is applicable to dirty liquid relates to a kind of flowmeter, relates in particular to the high-precision measuring device that is applicable to dirty liquid.

Background technology

At present, in industries such as oil, chemical industry, coal, when fluid flow is correlated with in all use turbine meter meterings, be to keep measuring accuracy, need the filtration unit with bore is installed before flowmeter, to be applicable to metering to dirty medium.Current, measuring apparatus connects in the following manner: measured medium circulation duct → gate valve → filtrator → flowmeter → gate valve, also before filtrator, install solenoid valve as required sometimes additional, and each parts is split type, connects by ring flange.And purchasing department of manufacturing enterprise is because a variety of causes, filtrator and flowmeter may adopt the product of different manufacturers, therefore filtrator and flowmeter can not guarantee on same horizontal line because of product differentiation or because of reason is installed, cause measured medium to be flowed through and to produce crushing or sinuous flow behind the filtrator, thereby influenced measuring accuracy.In addition, existing filtration device structure is reasonable inadequately, and the filter lid is by a plurality of screw lockings, the dismounting filtrator cleans filter screen and bothers very much, especially at the outdoor location of work under bad environment, particularly severe winter,, influenced work efficiency for the field worker operation brings great difficulty.

Summary of the invention

In order to solve filter rinsed (or filter core) dismounting trouble, and the inconvenience that is connected with the split type employing ring flange of flowmeter of filtrator, and guarantee that filtrator and quantifier are installed on the same horizontal line, avoid waiting to measure medium and before flowmeter, form the sinuous flow phenomenon, the utility model provides a kind of filtrator and flowmeter is measured device with the turbine type flow that straight tube is connected as a single entity, and this device is equipped with the filter screen of rectifier and convenient mounting or dismounting, alleviated greatly and cleaned the labour intensity of filter screen, and guaranteed the precision of flowmeter.

To achieve these goals, the utility model has designed a kind of high-precision flow metering device that is applicable to dirty liquid, includes ring flange, three sections straight tubes, filtrator, rectifier, flowmeter.Filtrator is connected by straight-run of pipe with the flowmeter import, and rectifier is installed in this section straight tube, and filter inlet and flowmeter outlet are respectively by the straight-run of pipe mounting flange.Wherein, the direct and straight tube welding of the import of filtrator and outlet.The import and the outlet of flowmeter are provided with lock screw, the port of the straight tube that is connected with outlet with the import of flowmeter is welded with the back-up ring greater than the straight tube external diameter, be with the sleeve nut that cooperates with back-up ring on the straight tube, sleeve nut is provided with the convex edge can not deviate from sleeve nut from the straight tube end; Spin by sleeve nut and lock screw, straight tube is connected with flowmeter, and is lined with O-ring seal therebetween.

Described filtrator 2 comprises filter body, filter screen, loam cake.Filter body and loam cake form the cavity that comprises the flowmeter import and export, and the both sides at cavity middle part are provided with a pair of guide groove, and filter screen is inserted in the guide groove, and the import and export at cavity two is connected with straight tube respectively.Wherein, loam cake is by rapid-acting coupling, form with supporting buckle closure of rapid-acting coupling and the O-ring seal below the buckle closure; The wire side of filter screen is the concave surface of arc.

Described rectifier is the parallel isometric tubule of cluster.

Described flow is counted turbo flow meter, and the turbine place is provided with sensor, is connected with LCD display with sensor.

The major advantage of this device is: 1, filtrator and flowmeter link into an integrated entity with the straight tube that rectifier has been installed, and measured liquid is maintained at the same horizontal plane, and have guaranteed the measuring accuracy of flowmeter.2, filter screen is fixed in the guide groove of filter body, and it is extremely convenient to plug, and the dismounting cleaning to filter screen is finished at the scene fast, is very easy to the user.

Description of drawings

Fig. 1 is applicable to a preferred embodiment overall construction drawing of the high-precision flow metering device of dirty liquid for the utility model;

Fig. 2 is the structural drawing of middle filtrator embodiment illustrated in fig. 1;

Fig. 3 is the wiring layout of filtrator shown in Figure 2;

Fig. 4 is the front elevation of middle filtrator housing embodiment illustrated in fig. 1;

Fig. 5 is the side view of middle filtrator housing embodiment illustrated in fig. 1;

Fig. 6 is the vertical view of middle filtrator housing embodiment illustrated in fig. 1;

Fig. 7 is for can be loaded on the filter screen front elevation in the filter body shown in Fig. 4-6;

Fig. 8 is for can be loaded on the filter screen side view in the filter body shown in Fig. 4-6;

Fig. 9 is the rectifier A-A sectional view in embodiment illustrated in fig. 1;

Figure 10 is the structural drawing of middle flowmeter embodiment illustrated in fig. 1;

Figure 11 is middle flowmeter port embodiment illustrated in fig. 1 and straight tube connection diagram.

Among the figure: the 1-ring flange; The 2-filtrator; The 3-rectifier; The 4-sleeve nut; The 5-flowmeter; The 6-straight tube; The 7-LCD display; The 8-loam cake; The 9-filter body; The 10-filter screen; 11-rapid-acting coupling; The 12-buckle closure; The 13-O-ring seal; The 14-guide groove; The 15-wire side; The 16-handle; The 17-tubule; The 18-flowmeter shell; 19-impeller frame; The 20-impeller; The 21-sensor; The 22-lock screw, 23-steel ring, 24-packing washer.

Embodiment

Describe the utility model in detail below in conjunction with Fig. 1～embodiment shown in Figure 10.

The total figure of the structure of present embodiment sees Fig. 1.The ring flange 1 at two ends and the import and export of filtrator 2 and straight tube 6 are welded into integral body; Flowmeter 5 is connected by sleeve nut 4 with straight tube 6.Whole device straight line connects, and keeps level in use.

Filtrator 2 structures such as Fig. 2 in the device.Filtrator 2 in the present embodiment is made up of three parts, top is the loam cake of being made up of rapid-acting coupling 11 and supporting buckle closure 12 and O-ring seal 13 8, and the rapid-acting couplings of B-3 type are adopted in rapid-acting coupling 11, and buckle closure 12 adopts DP type buckle closures, O-ring seal 13 is the O RunddichtringO, and Fig. 3 is its assembling synoptic diagram.The bottom is divided into filter body 9 (as Fig. 4,5,6), 6 welding of the import and export of filter body 9 and straight tube, on the relative sidewall in the middle part of filter body 9 vertically setting can insert a pair of guide groove 14 of filter screen.Third part is the filter screen 10 (as Fig. 7,8) that is inserted in the filter body 9, and filter screen 10 can be along 14 plugs of the guide groove in the filter body 9, and the wire side 15 of filter screen 10 is curved, when dirty liquid passes through, can effectively adhere to impurity; And on filter screen 10, be provided with handle 16.Rapid-acting coupling 11 is welded into one with filter body 9, unclamps the locking device of rapid-acting coupling 11, can take out buckle closure 12, and then can take out O RunddichtringO and filter screen 10.And can clear up filter screen 10 at any time, avoid in filtrator, depositing impurity.

Rectifier 3 in the device is positioned at the straight tube 6 that connects filtrator 2 and flowmeter 5, by a plurality of isometric, form with tubule 17 spot welding of bore, its structure is seen Fig. 9.Rectifier 3 can make the same flow direction of the liquid of flowing through, absence of vortices, no sinuous flow, but the precision of dependable flow meter.

Flowmeter 5 in the device adopts ripe product---the flowmeter in the turbine fuel-metering device, and this flowmeter attaches LCD display 7, and its structure is seen Figure 10.The import and export of flowmeter shell 18 is connected with pipeline, impeller 20 is arranged on flowmeter shell 18 middle parts by impeller frame 19, impeller 20 other settings can be gathered the sensor 21 of wheel speed, and sensor 21 is connected with LCD display 7, and LCD display 7 is converted into flow with wheel speed and shows.The import and export at flowmeter 5 two ends is provided with lock screw 22, adds packing washer 24 lockings and is connected as a single entity by being enclosed within sleeve nut 4 on the straight tube with straight tube 6.For preventing that sleeve nut 4 from skidding off, at the back-up ring 23 of straight tube port welding greater than the straight tube external diameter, and sleeve nut 4 is provided with the convex edge sleeve nut 4 can not be deviate from from back-up ring 23.Owing to carried out rational trim designs, as long as unclamp or tighten the sleeve nut 4 at two ends, just can safeguard debugging easily with flowmeter 5 demolition, installation.

Claims

1. be applicable to the high-precision flow metering device of dirty liquid, include ring flange (1), three sections straight tubes (6), filtrator (2), rectifier (3), flowmeter (5), it is characterized in that: filtrator (2) is connected by straight-run of pipe (6) with flowmeter (5) import, rectifier (3) is installed in this section straight tube (6), and filtrator (2) import and flowmeter (5) outlet are respectively by straight-run of pipe (6) mounting flange (1).

2. the high-precision flow metering device that is applicable to dirty liquid as claimed in claim 1, it is characterized in that: described filtrator (2) comprises filter body (9), filter screen (10), loam cake (8), filter body (9) forms the cavity that comprises flowmeter (5) import and export with loam cake (8), the both sides at cavity middle part are provided with a pair of guide groove (14), filter screen (10) is inserted in the guide groove (14), and the import and export at cavity two is connected with straight tube (6) respectively.

3. the high-precision flow metering device that is applicable to dirty liquid as claimed in claim 1, it is characterized in that: described rectifier (3) is the parallel isometric tubule of cluster (17).

4. the high-precision flow metering device that is applicable to dirty liquid as claimed in claim 1, it is characterized in that: described flowmeter (5) is a turbo flow meter, and the turbine place is provided with sensor (21), is connected with LCD display (7) with sensor (21).

5. the high-precision flow metering device that is applicable to dirty liquid as claimed in claim 2 is characterized in that: described loam cake (8) is by rapid-acting coupling (11), form with supporting buckle closure (12) of rapid-acting coupling (11) and the O-ring seal (13) below the buckle closure (12).

6. the high-precision flow metering device that is applicable to dirty liquid as claimed in claim 2, it is characterized in that: the wire side (15) of described filter screen (10) is the concave surface of arc.

7. as each described high-precision flow metering device that is applicable to dirty liquid among the claim 1-6, it is characterized in that: direct and straight tube (6) welding of the import of filtrator (2) and outlet.

8. as each described high-precision flow metering device that is applicable to dirty liquid among the claim 1-6, it is characterized in that: the import of flowmeter (5) and outlet are provided with lock screw (22), the port of the straight tube that is connected with outlet with the import of flowmeter (5) is welded with the back-up ring (23) greater than the straight tube external diameter, be with the sleeve nut (4) that cooperates with back-up ring (23) on the straight tube, spin by sleeve nut (4) and lock screw (22), straight tube (6) is connected with flowmeter (5), and is lined with O-ring seal therebetween (13).