CN201259433Y

CN201259433Y - Horizontal screw wing dismantling water meter

Info

Publication number: CN201259433Y
Application number: CNU2008201028818U
Authority: CN
Inventors: 刘松
Original assignee: FUZHOU ZENNER WATER METER Co Ltd
Current assignee: FUZHOU ZENNER WATER METER Co Ltd
Priority date: 2008-07-02
Filing date: 2008-07-02
Publication date: 2009-06-17
Anticipated expiration: 2018-07-02

Abstract

The utility model belongs to a fluid measurer, and in particular belongs to a horizontal helix-type disassemble water meter, which comprises a shell and a core, and is characterized in that a rectifier is arranged on the water inlet end and the water outlet end of the shell. The water meter has the advantages that the rectifier is respectively arranged in the water inlet pipe and the water outlet pipe of the shell, so that the rectifying effect is obviously improved, and the overfall can be similar to the lamellar flow status as far as possible, thereby reducing unfavorable influence of the measurement correctness caused by the interference elements in front and behind the water meter and improving the flowing cross section sensitivity grade of the water meter; an obturating ring is respectively installed on the front junction surface and the rear junction surface between the core and the shell, so that the tightness effect is more reliable, thereby improving the performance of the flow rate in the low area, and improving the impact-resistant capacity of the core during the overloading flow rate.

Description

Horizontal spiral shell wing detachable watermeter

Technical field

The utility model belongs to fluidic counter, especially belongs to horizontal spiral shell wing detachable watermeter.

Background technology

Existing level spiral shell wing detachable watermeter (WPH) as shown in Figure 1, constitute by housing 1, movement 2, at housing 1 turnover water end (W.E.) is the pipeline of inner wall smooth, only play the circulation current, and water meter is when being installed in the pipeline, the front and back of table are connected with elbow, T type pipe, reducer pipe, water filter, valve inevitably ... etc. disruption member, so current nearly all can turbulization when entering water meter.Existing level spiral shell wing detachable watermeter has only the front and back design of impeller in the movement that the rectification muscle is arranged, its rectification effect is undesirable, and have only the movement front that an O-ring seal 23 is housed, sealing effectiveness is bad, on one-piece construction, make movement 2 become a cantilever design, for large-diameter water meter, when crossing current-carrying capacity, may cause movement to be subjected to water impact and to make deformation of timbering, cause the change of inner components assembly precision, reduce the accuracy of measuring.

Summary of the invention

The utility model purpose is to overcome above-mentioned shortcoming, and a kind of measuring accuracy height is provided, to the adaptable horizontal spiral shell wing detachable watermeter of various streamflow regimes.

The technical scheme that the utility model adopted is horizontal spiral shell wing detachable watermeter, comprises housing, movement, and its main points are: the water inlet end at housing is added with rectifier.

The utility model also can further be improved to, and also is added with rectifier in the water side of housing.

The utility model is added with rectifier housing into and out of water end (W.E.), make the current that enter water meter improve as far as possible to become near laminar condition by turbulent flow, before the reduction table, table back elbow, T type pipe, reducer pipe, water filter, the valve installed ... wait of the harmful effect of each disruption member to the water meter measurement accuracy, improve the flow profile sensitivity grade, strong to streamflow regime adaptability.

Rectifier can be made of the rectification muscle of direct casting in the pipeline of housing turnover water end (W.E.), and the rectification muscle is for directly tabular, more than or equal to three, circumferentially.Consider that from casting manufacturability the rectification muscle is preferably eight, be hollow " well " word shape and distribute.

Or rectifier is individual member, and inner rectification muscle evenly waits central angle ground by the radiation of middle mind-set circumference for directly tabular, and the rectification muscle is fixedly connected on housing and passes in and out outer the putting that water channel matches.

Rectifier is an individual member, is made of rectification muscle and overcoat, and overcoat is fixed on the housing turnover water channel, and the rectification muscle is straight plate, makes uniform clathrate, is fixed in the overcoat.

Equally can be at pack into the parts of other material of the water channel of the turnover water end (W.E.) of housing with the effect of rectification muscle, also can be only at water inlet end or the parts of rectified action only are installed in the water side or are cast with the rectification muscle.

The internal diameter of movement of the present utility model is big as far as possible, and is consistent with the nominal bore of water meter, can improve the flow performance in the high district of flow.Water side at movement increases an O-ring seal, and the front/rear end of movement is made big up and small down inclined-plane, and its gradient is generally 3～5 degree, and the inclined-plane, two ends makes movement easy for installation, and O-ring seal is not easy injured in the process that movement is installed.After the movement two ends all seal, can guarantee that current do not leak, the impeller of all flowing through, can improve the measurement performance in the low district of flow, O-ring seal by two ends fuses movement and housing, made and original supported close-fitting rock-steady structure before and after having, transshipped the impact of current when adapting to big flow movement for the movement of cantilever design becomes.

Have only an O RunddichtringO between original water meter head bearing and the blind flange, sealing property is reliable inadequately, and the adjustment sheet location that links to each other with head bearing is also unreliable.The utility model has carried out further improvement to existing water meter governor motion: at head bearing radially on the basis of O RunddichtringO, increased an end face O RunddichtringO again, improved the sealing reliability of water meter, can increase the friction force between head bearing and the blind flange again, the reliability of the adjustment sheet location that is attached thereto is improved, avoid big flow attack adjustment sheet to be subjected to displacement, the accuracy of influence metering.

The utility model movement fore-stock and after-poppet adopt inner cased type to connect, and design has positioning key, groove, and assembly technology is simple, connect reliably, can guarantee the right alignment that fore-stock and after-poppet are top.

Advantage of the present utility model is: increase rectifier in housing turnover water channel, obviously improve rectification effect, make turbulent flow as far as possible near laminar condition, disruption member improves the flow profile sensitivity grade of water meter to water meter measurement accuracy ground harmful effect before the reduction water meter, behind the table; On the composition surface O-ring seal being installed respectively before and after movement and the housing, make sealing effectiveness more reliable, put forward the performance of high low area flow, and improved the ability of movement anti-current-rush when crossing current-carrying capacity; Increase an O RunddichtringO at movement head bearing end face, both strengthened sealing effectiveness, strengthen the locating friction power of adjustment sheet again, when crossing current-carrying capacity, can not produce displacement, influence the accuracy of measuring so that reconcile sheet; The movement assembling connects reliable, and technology is simple, and reduces movement physical dimension, thereby reduces the physical dimension of housing, saves material, alleviates the weight of water meter.

Description of drawings

Fig. 1 is the structural representation of existing level spiral shell wing detachable watermeter

Fig. 2 structural representation of the present utility model

Fig. 3 is the cut-open view of utility model

Fig. 4 is the structural representation of rectifier embodiment 2

Fig. 5 is the structural representation of rectifier embodiment 3

Wherein: 1 housing, 11 water inlet ends, 12 rectifiers, 13 water sides, 14 rectification muscle, 2 movements 21 are O RunddichtringO 22 adjustment sheets 23 O-ring seals 24 head bearings 25 end-face seal rings 26 fore-stocks 27 after-poppets 28 blind flanges 29 locating slots radially

Embodiment

Below in conjunction with view the utility model is described in detail, the following examples can make the professional and technical personnel more understand the utility model, but do not limit the utility model in any form.

Embodiment 1, as Fig. 2, shown in Figure 3, horizontal spiral shell wing detachable watermeter, comprise housing 1, movement 2, water inlet end 11, water side 13 at housing 1 are added with rectifier 12 respectively, rectifier 12 is made of into and out of the rectification muscle 14 in the water channel at housing 1 direct casting, rectification muscle 14 is for directly tabular, more than or equal to three, circumferentially just can reach the purpose of steady turbulent flow, the many more rectification effects of rectification muscle 14 quantity are good more certainly, consider from casting manufacturability, the rectification muscle is preferably eight, and hollow " well " the word shape that presents as shown in FIG. distributes.The internal diameter of movement 2 is big as far as possible, preferably consistent with the nominal bore of water meter, can improve the flow performance in the high district of flow, in advancing of movement 2, the water side respectively has a seal groove, be used to install and fix O-ring seal 23, the Inlet and outlet water end face of movement 2 has big up and small down inclined-plane, with the vertical plane angulation of central shaft be 3～5 degree, be that gradient is 3～5 degree, the inclined-plane, two ends makes movement easy for installation, O-ring seal 23 is not easy impaired in the process that movement 2 is installed, on the basis of the head bearing 24 existing radially O RunddichtringOs 21 that have movement 2 now, increased an end-face seal ring 25 again, improved the sealing reliability of water meter, can increase the friction force between head bearing 24 and the blind flange 28 again, the reliability of adjustment sheet 22 location that are attached thereto is improved, avoid big flow attack that adjustment sheet 22 is subjected to displacement, the accuracy of influence metering.Movement 2 fore-stocks 26 and after-poppet 27, the employing inner cased type connects, and design has positioning key, locating slot, has locating slot 29 among the figure on the after-poppet 27, positioning key with matching (not drawing among the figure) is on fore-stock 26, and this key, groove cooperate assembly technology simple.

Rectifier of the present utility model also can be as shown in Figure 4, rectifier 12 is an individual member, and inner rectification muscle 14 waits central angle ground by the radiation of middle mind-set circumference for directly tabular, rectification muscle 14 is fixedly connected on the overcoat 15 that matches with housing 1 turnover water channel, and overcoat 15 is connected with housing 1 by fixture

Rectifier of the present utility model also can be as shown in Figure 5, and rectifier 12 is an individual member, is made of rectification muscle 14 and overcoat 15, overcoat 15 is fixed on the housing 1 turnover water channel, and rectification muscle 14 is straight plate, makes uniform clathrate, be fixed in the overcoat 15, overcoat 15 is connected with housing 1 by fixture.

Claims

1, horizontal spiral shell wing detachable watermeter comprises housing (1), movement (2), it is characterized in that, the water inlet end (11) in housing (1) is added with rectifier (12).

2, removable horizontal helical vane type water meter according to claim 1 is characterized in that, is added with rectifier (12) in the water side (13) of housing (1).

3, horizontal spiral shell wing detachable watermeter according to claim 1 and 2 is characterized in that, rectifier (12) is made of the rectification muscle (14) of direct casting in housing (1) turnover water channel, and rectification muscle (14) is at least three for directly tabular, is uniformly distributed along the circumference.

4, horizontal spiral shell wing detachable watermeter according to claim 3 is characterized in that rectification muscle (14) is eight, is " well " word shape and distributes.

5, horizontal spiral shell wing detachable watermeter according to claim 1 and 2, it is characterized in that, rectifier (12) is an individual member, inner rectification muscle (14) is for directly tabular, by the radiation of middle mind-set circumference, rectification muscle (14) is fixedly connected on the overcoat (15) that matches with housing (1) turnover water channel on central angle ground.

6, horizontal spiral shell wing detachable watermeter according to claim 1, it is characterized in that, rectifier (12) is an individual member, constitute by rectification muscle (14) and overcoat (15), overcoat (15) is fixed on housing (1) the turnover water channel, rectification muscle (14) is straight plate, makes uniform clathrate, is fixed in the overcoat (15).

7, horizontal spiral shell wing detachable watermeter according to claim 1 is characterized in that in the water side of movement (2) O-ring seal (23) being arranged.

8, removable horizontal helical vane type water meter according to claim 1 is characterized in that, going up at the head bearing (24) of movement (2) increases an end-face seal ring (25).

9, horizontal spiral shell wing detachable watermeter according to claim 1 is characterized in that, the fore-stock (26) of movement (2) and after-poppet (27) adopt inner cased type to connect, and connect by positioning key, locating slot (29).