RU2498227C2 - Fan-type cold and hot water metre - Google Patents

Abstract

FIELD: measurement equipment.

SUBSTANCE: device includes a water metre housing having cylindrical chamber 12 with impeller 2 installed in it with possibility of transfer of impeller 2 through a magnetic clutch coupling to counting mechanism 8 installed on housing 1 of the water metre in plastic transparent casing 9, the upper part of which is transparent, so that possibility of watching the readings of the counting mechanism is provided; sealing element 21 is made in lower part of the plastic transparent casing. Provision of protective metal bushing 7 and metal screen 5 from steel allows protecting the elements of the counting mechanism against action of magnetic and electromagnetic fields by means of a screened zone formed between protective metal bushing 7 and metal screen 5 which provides considerable weakening and dissipation of the above fields, which improves accuracy of water metre readings, erection convenience and adjustment of the counting mechanism elements due to simultaneous increase of structural strength with provision of stability of mutual position of the above elements. With that, marks and figures of scale 23 are applied onto disc 22; in addition, the device is equipped with removable segment 27 in upper part of transparent plastic casing 9. Also, the device has remote pulse transfer sensor 26 arranged in installation elements of upper part of transparent plastic casing 9 and removable segment 27, has opposite located latches 28 of segment 27, which interact with their mating elements in the deepened part of transparent plastic casing 9, enclosing projection 29 in the deepened part of transparent plastic casing 9 for arrangement of disc 22. Self-destructing latches 13 providing interaction with external mating element of upper edge of housing 1 are located on inner surface of lower edge of transparent plastic casing 9. Signal sprocket 24 is made in the form of a one-piece part together with magnetic half-coupling 19 (an analogue has two of such parts).

EFFECT: reduction of labour intensity for manufacture; reduction of possibility of random damage to the seal at installation or transportation of a metre; improvement of protection against mechanical effects and against action of magnetic and electromagnetic fields preventing the metre operation; improvement of reliability and durability of bearing assemblies; improvement of hydraulic parameters of the impeller; optimisation of connection means of the elements and hydraulic insulation; improvement of operating parameters of the device as a whole.

10 cl, 14 dwg

Description

The proposed invention relates to measuring technique and can be used in water supply and hydraulics to measure the amount of cold and / or hot water.

Vane-type water meters are known (SLE - 3/15 PO “Tochmash”, Vladimir).

The principle of operation of the meter is based on measuring the number of revolutions of the impeller, rotating under the influence of the flow of water flowing in the pipeline, the flow of water enters the measuring chamber through the filter and rotates the impeller, in which magnets are located, through which the rotation of the driven clutch of the counting mechanism, which is separated from measuring medium. The counting mechanism is protected by a transparent plastic casing connected to the housing with a threaded plastic nut, which has an opening for sealing the regulating element. The sealing wire is installed in the hole of the nut passes through the hole in the housing and is sealed with a seal.

The disadvantages of this design of the attachment of the counting mechanism are the high complexity of manufacturing the sealing compound, the possibility of accidentally damaging the seal when installing or transporting the meter. The plastic casing protecting the counting mechanism is poor protection against mechanical influences and does not protect against electromagnetic fields that impede the operation of the counter; there are drawbacks in the operational reliability and durability of the bearing assemblies, the optimality of the hydraulic parameters of the impeller, and the means of articulation of the elements. Ease of use, maintainability, manufacturability.

The technical solution is also known: (19) RU (11) 92003437 (13)

A, (51) IPC 6 G01F 1/06

Application: 92003437/10, 02.11.1992 (45) Published: 01/09/1995 (71) Applicant (s): Tula Polytechnic Institute (72) Author (s): Korotkov V.A., Valiulin A.N., Novikova L. .F.

(54) TURBINE TANGENTIAL WATER METER (57)

Claim:

Turbine tangential water meter is designed to measure the flow of drinking and industrial water. The aim of the invention is to increase the sensitivity of the water meter with a significant simplification of the design. In this case, the device housing consists of two parts. The first part has the form of a base with a central section of a rectangular profile mated to the inlet and outlet pipes by sections in which the cross-sectional area is preserved. In addition, the first part is provided with a window mating with the window of the second part of the housing, made cylindrical with a bottom of a cup-shaped shape and in which a partition of a cup-shaped shape made of non-magnetic material is placed. The blades of the turbine are made in a T-shape, on the inner edges of which a leading magnetic coupling is fixed on the side of the partition. The driven coupling half is located behind the partition and kinematically connected with the counting unit.

However, in this solution there is also a high complexity of manufacturing, the possibility of accidentally damaging the seal when installing or transporting the meter. The transparent casing protecting the counting mechanism is poor protection against mechanical influences and does not protect against electromagnetic fields that impede the operation of the counter; there are drawbacks in the operational reliability and durability of the bearing assemblies, the optimality of the hydraulic parameters of the impeller, the means of articulation of the elements, the stability of the relative position and, accordingly, the accuracy of the readings , adjustment, verification. Ease of use, maintainability, manufacturability.

The closest in technical parameters and essence of the proposed fastening of the counting mechanism to the body is the solution, according to the USEFUL USE MODEL “WINGED WATER METER”, which is considered as a prototype to the declared -

RU (11) 24556 (13) U1, (51) IPC 7 G01F 15/14, G01F 1/075,

(21), (22) Application: 2002102992/20, 02/11/2002,

(24) Date of commencement of validity of a patent:

02/11/2002,

(45) Published: 08/10/2002, (73) Patent holder (s):

Open Joint Stock Company "Arzamas Instrument-Making Plant".

- The formula of the utility model (- the aforementioned prototype RU - 24556).

A vane water meter containing a measuring chamber through which water flows, a regulating device installed in the chamber of the impeller, the rotation of which is transmitted through a magnetic coupling to a counting mechanism mounted on the body of the water meter, the regulating device and the counting mechanism, are protected by a casing in the upper part of which a transparent window and a metal screen are installed, characterized in that in the lower part of the casing, sealing protrusions are made around the circumference in an amount of at least 4 pcs., which form an integral mnoe connection with the housing by press fitting into the longitudinal groove formed circumferentially in the upper housing part and a casing made of steel.

The disadvantages of this solution are the complexity of manufacturing, the possibility of accidentally damaging the seal when installing or transporting the meter, insufficient protection against mechanical stress and electromagnetic fields that impede the meter’s operation, there are drawbacks in the operational reliability and durability of the bearing assemblies, the optimality of the hydraulic parameters of the impeller, means of articulation of elements, waterproofing, insufficient: ease of use of the device as a whole, its repair of clarity, manufacturability, reliability of reading the values and calibration.

The technical task of this utility model is to reduce the complexity of manufacturing, reduce the possibility of accidentally damaging the seal during installation or transportation of the meter, increase protection against mechanical stress and magnetic and electromagnetic fields that interfere with the meter, increase the reliability and durability of bearing assemblies, improve the hydraulic parameters of the impeller, optimize means of articulation of elements and waterproofing, improving the operational parameters of the device CTBA in general.

The specified technical problem is provided by the following used set of essential features.

Counter wing and hot and cold water, including a transparent plastic casing, a measuring chamber, a regulating device installed in the bearing units of the measuring chamber, an impeller, with the possibility of transmitting rotation through a magnetic coupling to a counting mechanism located on the meter body, as well as shielding, signal an asterisk with a drive, and the casing has a sealing means, moreover,

the counter is equipped with a sensor for remote transmission of pulses located in the seat, self-destructing latches are made in the lower part of the transparent plastic casing, which provide interaction with the external response lock of the upper end, the lower bearing assembly is made raised above the bottom of the cylindrical chamber of the housing,

wherein

- curly cuts are made on the impeller blades;

- sealing elements are made reciprocally combined, in an amount of not more than two;

- indicator means are made in the form of a roller pointer 31 and a disk 22 with the risks and numbers on the scale 23;

- the signal sprocket is made integral with the drive, placed with the possibility of observation and registration through the viewing window formed in the seat;

- is additionally equipped with a removable segment of the upper part of the transparent casing having latches for quick installation / removal of the segment and the corresponding reciprocal hook on the inner surface of the seat;

- equipped with a protective element of a transparent plastic casing for placing the disk, has a segmented seat in the upper part of the casing;

- equipped with a stop in a segmented buried place on the upper part of the casing;

- on the outer surface of the upper part of the transparent plastic casing, positioning stops 40 are made having a L-shaped cross section for accommodating a removable information element;

- the impeller blades are made in a step-like shape with a decrease in the transverse dimension from the periphery of the impeller to the axis of the impeller due to the formed two-sided symmetrical curly cuts on the blades.

The above set of essential features is illustrated by the specification of features and drawings.

Cold and hot water wing meter, including a transparent plastic casing, a measuring chamber through which water flows, a regulating device, an impeller installed in the measuring chamber, the rotation of which is transmitted through a magnetic coupling to a counting mechanism mounted on the water meter housing, a regulating device and a counting mechanism are protected by a transparent plastic casing, as well as shielding means, indicator means, a signal sprocket 24 with a drive,

moreover, the casing has sealing means, while the upper part of the casing is equipped with self-destructive latches (13), curly cuts 16 are made on the impeller blades 15, the sealing elements 21 are reciprocally combined, in an amount of not more than two.

In this case, the indicator means are made in the form of a roller pointer and a disk 22 with the risks and numbers on the scale 23, the signal sprocket 24 is made integral with the drive, placed with the possibility of observation and registration through the viewing window (observation) formed in the seat, equipped with a sensor 26 for remote transmission of pulses, located in the seat 35, is additionally equipped with a removable segment 27 of the upper part of the transparent casing 9 having latches 28 for quick installation / removal of the segment and corresponding the engaging mating hook 33 of the inner surface of the seat 32, is provided with a guarding element 29 of the transparent casing 9 for accommodating the disk 22, has a segmented seating 32 of the upper part of the casing 9, the lower part 34 of the transparent plastic casing 9, is made with the possibility of interaction of self-destructive latches 13 with the external response the retainer 36 of the upper end of the housing 1, is equipped with a stop 37 in a segmented recessed place 32 of the upper part of the casing 9.

On the outer surface of the upper part of the transparent casing 9, positioning stops 40 are made having an L-shaped cross-section for accommodating a removable information element (not shown), while the lower bearing assembly 18 is made raised above the bottom of the cylindrical chamber 12 of the housing 1, in particular, to prevent ingress of abrasive suspensions into it and at the same time interacting with the buried lower end of the impeller 2 - to provide a kind of “water seal”, which also additionally prevents ingress in the bearing assembly of abrasive particles while ensuring optimal placement of the center of gravity of the impeller 2 with respect to the axis of the incoming flow.

The impeller blades 15 are made in a step-like shape with a decrease in the transverse size from the periphery of the impeller to the axis of the impeller 14, due to two-sided symmetrical curly cuts on the blades 16.

The essence of the utility model is illustrated by drawings, which schematically depict the proposed solution.

Figure 1 - shows a General view of the counter.

Figure 2 - shows a section aa the General view of the counter in figure 1.

Figure 3 - shows a top view of the counter in figure 1.

Figure 4 - shows a section bB top view of the counter in figure 3.

Figure 5 - shows a section bb of the General view of the counter in figure 1.

In Fig.6 - shows the upper transparent part 9 of the transparent plastic casing of the counter in Fig.1, without a removable segment 27, complete with elements of the counting (indicator) mechanism 8.

In Fig.7 - shows the upper transparent part 9 of the transparent plastic casing of the counter in Fig.1.

On Fig - shows a local cutout in the bottom view (3/4) of the General view of the counter in figure 1.

In Fig.9 - shows a top view (3/4) of the General view of the counter in Fig.1.

Figure 10 - shows a side view (3/4) of the General view of the counter in figure 1, with a local cutout.

In Fig.11 - shows a side view (3/4) of a fragment of a local cutaway of the general view of the counter in Fig.1., Enlarged.

On Fig - shows a side view (3/4) of a fragment of a local cutaway of a General view of the counter in figure 1., enlarged.

On Fig - shows a bottom view (3/4) of the removable segment 27.

On Fig - shows a top view (3/4) in the assembly process of the removable segment 27 and the upper part of the transparent casing 9, enlarged.

In the figures (and photographs), positions are indicated by.

1 - case

2 - impeller

3 - a sealing ring

4 - regulator

5 - metal screen

6 - spring flat clamp clip.

7 - protective metal sleeve

8 - counting (indicator) mechanism

9 - transparent plastic casing

10 - tangential inlet pipe

11 - tangential output pipe

12 - cylindrical chamber

13 - self-destructive latches

14 - impeller axis

15 - impeller blades

16 - cutout on the blades

17 - upper bearing assembly

18 - lower bearing assembly

19 - magnetic coupling half

20 - the upper part of the cylindrical chamber 12

21 - filling elements

22 - drive

23 - risks and scale numbers

24 - signal asterisk

25 - marking elements

26 - sensor for remote transmission of pulses

27 is a removable segment of the upper part of the transparent casing 9.

28 - latches for quick installation / removal of the segment 27.

29 - the enclosing element of the transparent casing 9 to accommodate the disk 22.

30 - seal

31 - roller pointer

32 - segmented seat on the upper part of the casing 9.

33 - mating hook of the inner surface of the seat 32.

34 - the lower part of the transparent plastic casing 9.

35 - a seat of the sensor for remote transmission of pulses.

36 is an external response retainer of the upper end of the housing 1.

37 - emphasis segmented seat 32 of the upper part of the casing 9.

38 - viewing (observation) window.

39 - seat for the magnetic coupling half 19.

40 - emphasis of the L-shaped section.

The specified solution to the technical problem is achieved by the fact that the proposed solution has an interconnected and interdependent set of essential features, namely:

- a water meter housing 1 having a tangential inlet pipe 10, a tangential outlet pipe 11, a cylindrical chamber 12 with an impeller 2 installed therein, with the possibility of transmitting the rotation of the impeller 2 through a magnetic coupling half coupling 19 to an indicator device (counting mechanism) 8 mounted on the housing 1 water meter in a transparent plastic casing 9, the upper part of which is made transparent, with the possibility of monitoring the readings of the counting mechanism 8 and the marking elements 25, while Noe device (Counter), the roller 8 has a pointer 31 and the disc 22 and bears the risk of the scale 23 and figures.

Additionally, the device is equipped with a removable segment 27 in the upper part of the transparent plastic casing 9, which can be fixed with a latch 28 on the reciprocal hook 33 of the inner surface of the segmented seat 32 of the transparent plastic casing 9.

On the lower part 34 of the transparent plastic casing 9 and on the removable segment 27, sealing elements 21 are used for installing the seal 30.

The device has a sensor 26 for remote transmission of pulses located in the seat 35 of the upper part of the transparent plastic casing 9.

On the reciprocal removable element (segment) 27 of the plane of the segmented seat 32, a wall protrusion 29 is erected, in the interior of which a disk 22 is placed.

In the lower part of the transparent plastic casing 9, self-destructive latches 13 are made, which ensure interaction with the external response lock 36 of the upper end of the housing 1.

The signal asterisk 24 (for verification and calibration of the meter by an external optically sensing sensor - not shown), is located between the buried part of the transparent plastic casing 9 and the protective metal sleeve 7, is made as a single part together (integrally at the same time) with a magnetic coupling half 19 (for an analog, this two separate parts), in the recessed part of the transparent plastic casing 9, a viewing (observation) window 38 is made for visual access to the signal sprocket 24.

Between the indicator device 8 and the regulators 4 there is a metal screen 5 and a protective metal sleeve 7 that provide protection from deforming loads of plastic parts.

Fixing the position of the screen 5 relative to the housing 1 provides a flat spring clip 6.

In the proposed solution, in particular, the implementation of the elements of the protective metal sleeve 7 and the metal screen 5 of steel, allows you to optimally protect the elements of the counting mechanism from the effects of magnetic and electromagnetic fields by formed between the protective metal sleeve 7 and the metal screen 5 of the shielding zone, which provides significant attenuation and the scattering of these fields, thereby preventing external influences, increases the accuracy of the water meter, the ease of installation and adjustment of the element a counting mechanism due to the simultaneous increase structural strength to ensure stability of interposition of the said elements, the use of structural elements for contacting mostly "legkohodovyh sliding" landings.

The lower bearing assembly 18 is made raised above the bottom of the cylindrical chamber 12 of the housing 1, in particular, to prevent abrasive slurry from entering it while interacting with the recessed lower end of the impeller 2 - to provide a kind of “hydraulic lock”, which also prevents the abrasive particles from entering the bearing assembly particles while ensuring optimal placement of the center of gravity of the impeller 2 with respect to the axis of the incoming flow.

The impeller blades 15 are made in a step-like shape with a decrease in the transverse dimension from the periphery of the impeller to the axis of the impeller 14, due to the two-sided symmetrical curly cuts on the blades 16.

The upper bearing assembly 17 is recessed relative to the end of the lower part of the regulator 4, for fixing the regulator 4 on the housing 1 in the upper inner part of the housing 1 there is a groove in which the clamp-holder 6 is placed.

To seal the cylindrical chamber 12 relative to the external environment, there is a regulator 4, which forms the upper part 20 of the cylindrical chamber 12 and the sealing ring 3.

The principle of operation of the counter is to measure the number of revolutions of the impeller 2, rotating under the influence of water flowing in the pipeline. The number of revolutions of the impeller 2 is proportional to the volume of water flowing through the meter.

The impeller 2 has a magneto-induction coupling with the driven magnetic coupling half 19, with the help of which the rotation is transmitted to the counting mechanism 8, which is separated from the measured (water) medium by the regulators 4.

The counting mechanism 8 through the scaling gear provides the conversion of the number of revolutions of the impeller 2 in the volume of the measured water in "m3". The volume of water measured by the meter is determined by the indications of the roller pointers 31 and the disk 22 with the risks applied to it and the numbers on the scale 23 of the counting mechanism 8.

The implementation of the protective metal sleeve 7 and the metal screen 5 of steel, as described above, provides protection of the counting mechanism 8 from mechanical damage and provides protection from magnetic and electromagnetic fields of the counter, which, ultimately, improves the accuracy of the measuring device and protects against unauthorized interference with the operation of the water meter.

The indicating control element is made in the form of a disk 22 (analogue-arrow).

Additionally, the device is equipped with a removable segment 27 of the upper part of the transparent casing 9.

The claimed solution (in accordance with the provisions of Article 1350 of the Civil Code of Part 4) is new, has an inventive step and is industrially applicable.

Insofar as:

- not known from the prior art;

for a specialist does not explicitly follow from the prior art;

can be used in industry, agriculture, healthcare, other sectors of the economy or in the social sphere.

Moreover, this invention does not fall under the exception of legal protection in accordance with the aforementioned Article 1350 - Clause 5, Clause 6.

Claims (10)

1. A wing and hot and cold water meter, including a transparent plastic casing, a measuring chamber, an adjusting device installed in the bearing units of the measuring chamber of the impeller, with the possibility of transmitting rotation from which through a magnetic coupling to a counting mechanism placed on the meter body, as well as shielding , indicator means, a signal sprocket with a drive, and the casing has a sealing means, characterized in that the meter is provided, placed in the formed seat , A sensor for remote transmission of pulses, the lower part of the transparent plastics housing adapted to engage with latches formed of auto-return lock outer upper end of the body, the lower bearing assembly is configured elevated above the bottom of the cylindrical chamber of the housing. 2. The wing-shaped counter of cold and hot water according to claim 1, characterized in that curly cuts are made on the impeller blades. 3. The wing-shaped counter of cold and hot water according to claim 1, characterized in that the sealing means is reciprocally combined, in an amount of not more than two. 4. The wing-shaped counter of cold and hot water according to claim 1, characterized in that the control element is made in the form of a disk with the risks and scale numbers applied to it. 5. The wing and hot and cold water counter according to claim 1, characterized in that the signal sprocket is integral with the drive, placed with the possibility of observation and registration through the viewing window formed in the seat. 6. The wing cold and hot water counter according to claim 1, characterized in that it is further provided with a removable segment of the upper part of the transparent casing having latches for quick installation / removal of the segment and the corresponding reciprocal hook on the inner surface of the seat. 7. The wing-shaped counter of cold and hot water according to claim 1, characterized in that it is provided with a guarding element of a transparent casing for placing the disk, has a segmented seat on the upper part of the casing. 8. The wing-shaped counter of cold and hot water according to claim 1, characterized in that it is provided with a stop in a segmented recessed place of the upper part of the casing. 9. The wing-shaped counter of cold and hot water according to claim 1, characterized in that on the outer surface of the upper part of the transparent casing there are positioning stops 40 having an L-shaped cross section for accommodating a removable information element. 10. The wing-shaped counter of cold and hot water according to claim 1, characterized in that the impeller blades are made in step-shaped form with a decrease in the transverse size from the periphery of the impeller to the axis of the impeller due to the two-sided symmetrical curly cuts on the blades.

Images