CN211626569U

CN211626569U - Liquid flowmeter for water supply pipeline

Info

Publication number: CN211626569U
Application number: CN202020281397.7U
Authority: CN
Inventors: 陈贤在
Original assignee: Jin Shui Mu Energy Saving Technology Tianjin Co ltd
Current assignee: Jin Shui Mu Energy Saving Technology Tianjin Co ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-10-02
Anticipated expiration: 2030-03-10

Abstract

The utility model relates to a liquid flowmeter for a water supply pipeline, which comprises a pretreatment part and a measurement part which are connected in sequence; the pretreatment part comprises a pretreatment shell, and a filtering assembly is arranged in the pretreatment shell and is used for carrying out filtration pretreatment on the fluid entering the measurement part; the measuring part comprises a measuring shell, the measuring shell is connected with the pretreatment shell, a turbine flow measuring assembly and a floating block density measuring assembly are sequentially arranged in the measuring shell along the flow direction of fluid, the turbine flow measuring assembly is used for measuring the flow of the fluid, and the floating block density measuring assembly is used for measuring the density of the fluid. The utility model discloses can carry out filtration treatment to measuring fluid for measurement accuracy is higher, not only can the measuring flow can also measure fluid density, and the function is more comprehensive.

Description

Liquid flowmeter for water supply pipeline

Technical Field

The utility model relates to a measuring instrument's technical research and development field especially relates to a liquid flowmeter for water supply pipe.

Background

Among the flow meters for liquid media, turbine flow meters are the more common meters. The turbine flowmeter comprises a magnetoelectric proximity sensor and an integrating instrument, and the measuring principle is as follows: the liquid impacts the turbine to rotate, the rotating speed of the turbine changes along with the change of the flow, namely the rotating speed of the turbine is large when the flow is large, the rotating speed of the turbine is converted into electric pulses with corresponding frequency through the magnetoelectric proximity sensor and the integrating instrument, the electric pulses are sent to the display instrument to be counted and displayed after being preamplified, and the instantaneous flow and the accumulated flow are obtained according to the pulse number and the accumulated pulse number in unit time.

However, the conventional turbine flowmeter is simple in structure and single in function, and the fluid directly impacts the turbine, so that impurities are sometimes mixed in the fluid, and the impurities may have certain influence on the turbine to cause certain measurement errors.

Disclosure of Invention

The utility model aims at solving the defects of the prior art and providing a liquid flow meter for a water supply pipeline.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:

a liquid flowmeter for a water supply pipeline comprises a pretreatment part and a measurement part which are connected in sequence;

the pretreatment part comprises a pretreatment shell, and a filtering assembly is arranged in the pretreatment shell and is used for carrying out filtration pretreatment on the fluid entering the measurement part; the measuring part comprises a measuring shell, the measuring shell is connected with the pretreatment shell, a turbine flow measuring assembly and a floating block density measuring assembly are sequentially arranged in the measuring shell along the flow direction of fluid, the turbine flow measuring assembly is used for measuring the flow of the fluid, and the floating block density measuring assembly is used for measuring the density of the fluid.

The pretreatment casing includes the square installation cavity at the first pipe-shaped link of front end, middle part and the second pipe-shaped link of rear end, all be equipped with the transition connecting pipe between first pipe-shaped link, second pipe-shaped link and the square installation cavity, the second pipe-shaped link links to each other with the measurement casing, filter assembly installs in square installation cavity department.

The filter assembly comprises a supporting plate, a filter screen device is fixed to the bottom of the supporting plate, fixed wing plates are arranged on the top ends of the front side wall and the rear side wall of the square mounting cavity respectively, the supporting plate is erected on the square mounting cavity and is mounted on the two fixed wing plates through bolts, and the filter screen device is inserted into the square mounting cavity and is attached to each inner wall of the square mounting cavity.

And a sealing gasket is arranged between the supporting plate and the top of the square mounting cavity.

And the end parts of the first round pipe-shaped connecting end and the second round pipe-shaped connecting end are provided with connecting flange discs.

The top of the supporting plate is provided with a lifting handle.

Turbine flow measurement subassembly is including installing at the inside preceding support and the back support of measuring the casing, be equipped with the turbine between preceding support and the back support, the both ends of turbine are passed through the bearing and are installed in the front and support, the back is supported, preceding support, back are supported on equal circumference radiation have a plurality of deflectors, the deflector is fixed on measuring shells inner wall, it is equipped with magnetoelectric proximity sensor to measure the casing top and correspond turbine department, magnetoelectric proximity sensor passes through data line electric connection each other with the integrating instrument.

The floating block density measurement assembly comprises a vertical rod fixed at the bottom in the measurement shell, the floating block is sleeved on the vertical rod in a sliding mode, the top of the measurement shell corresponds to the floating block and is provided with a capacitive sensor, and the capacitive sensor is electrically connected with the integrating instrument through a data line.

And the two end surfaces of the measuring shell are also provided with connecting flange plates, and the connecting flange plate at the front end of the measuring shell is connected with the connecting flange plate at the rear end of the pretreatment shell.

The utility model has the advantages that: the utility model discloses can carry out filtration treatment to measuring fluid for measurement accuracy is higher, not only can the measuring flow can also measure fluid density, and the function is more comprehensive.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the pretreatment section;

in the figure: 1-a pretreatment section; 2-a measuring section; 3-pretreating the shell; 4-a measuring housing; 5-a first round tube shaped connecting end; 6-cube installation cavity; 7-a second round tube shaped connecting end; 8-transition connecting pipe; 9-a support plate; 10-a filter screen device; 11-a fixed wing plate; 12-connecting a flange plate; 13-lifting the handle; 14-front support; 15-rear support; 16-a turbine; 17-a bearing; 18-a flow deflector; 19-a magneto-electric proximity sensor; 20-erecting a rod; 21-floating block; 22-a capacitive sensor;

the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

as shown in fig. 1 to 2, a liquid flow meter for a water supply pipeline includes a pretreatment section 1 and a measurement section 2 connected in sequence;

the pretreatment part 1 comprises a pretreatment shell 3, and a filtering component is arranged in the pretreatment shell 3 and is used for carrying out filtration pretreatment on the fluid entering the measurement part 2; the measuring part 2 comprises a measuring shell 4, the measuring shell 4 is connected with the pretreatment shell 3, a turbine flow measuring component and a floating block density measuring component are sequentially arranged in the measuring shell 4 along the flow direction of fluid, the turbine flow measuring component is used for measuring the flow of fluid, and the floating block density measuring component is used for measuring the density of the fluid.

Pretreatment casing 3 includes the square mounting chamber 6 at the first pipe shape link 5, the middle part of front end and the second pipe shape link 7 of rear end, all be equipped with transition connecting pipe 8 between first pipe shape link 5, second pipe shape link 7 and the square mounting chamber 6, second pipe shape link 7 links to each other with measurement casing 4, filtering component installs in 6 departments of square mounting chamber.

The filter assembly includes

backup pad

9, 9 bottoms in backup pad are fixed with filter screen device 10, both sides wall top all is equipped with fixed pterygoid lamina 11 around the

square installation cavity

6, 9 erects on square installation cavity 6 and installs on two fixed pterygoid lamina 11 through the bolt in backup pad, filter screen device 10 inserts in square installation cavity 6 and laminates mutually with 6 each inner walls in square installation cavity.

And a sealing gasket is arranged between the supporting plate 9 and the top of the square mounting cavity 6.

And the end parts of the first round pipe-shaped connecting end 5 and the second round pipe-shaped connecting end 7 are provided with connecting flange discs 12.

The top of the supporting plate 9 is provided with a lifting handle 13.

Turbine flow measurement subassembly is including installing at the preceding support 14 and the back support 15 of measuring 4 insides of casing, be equipped with turbine 16 between preceding support 14 and the back support 15, bearing 17 is passed through at the both ends of turbine 16 and installs in the front on supporting 14, back support 15, equal circumference radiation has a plurality of deflectors 18 on preceding support 14, the back support 15, deflectors 18 are fixed on measuring 4 inner walls of casing, it is equipped with magnetoelectric proximity sensor 19 to measure 4 tops of casing and correspond turbine 16 department, magnetoelectric proximity sensor 19 passes through data line electric connection each other with the integrating instrument.

The model number of the magnetoelectric proximity sensor 19 is MM08-60 APS-ZTK. The type of the integrating instrument is an AI-708H/808H integrating instrument.

The floating block density measurement assembly comprises a vertical rod 20 fixed at the bottom in the measurement shell 4, a floating block 21 is sleeved on the vertical rod 20 in a sliding mode, a capacitive sensor 22 is arranged at the top of the measurement shell 4 corresponding to the floating block 21, and the capacitive sensor 22 is electrically connected with the integrating instrument through a data line.

The capacitive sensor 22 is of the type Bernstein (Bernstein) capacitive sensor KCB-M18NS/005-KLP 2.

The two end faces of the measuring shell 4 are also provided with connecting flange discs 12, and the connecting flange disc 12 at the front end of the measuring shell 4 is connected with the connecting flange disc 12 at the rear end of the pretreatment shell 3.

The utility model discloses divide into preceding processing portion 1 and measuring part 2, filter screen device 10 in the preceding processing portion 1 can carry out the preliminary treatment to the fluid that gets into in the measuring part 2, filters impurity, and the fluid of guaranteeing to get into the measuring part 2 can not destroy turbine 16, and measuring precision is higher, and filter screen device 10 is convenient for clear up or change on the square installation cavity 6 of preceding processing casing 3 through backup pad 9 demountable installation in addition.

A turbine flow measuring component and a floating block density measuring component are sequentially arranged in the measuring part 2. The turbine flow measuring component makes the turbine 16 rotate by impacting the turbine 16 with liquid, the rotating speed of the turbine 16 changes along with the change of flow, the rotating speed of the turbine 16 is converted into electric pulses with corresponding frequency through the magnetoelectric proximity sensor 19 and the integrating instrument, the electric pulses are sent to the display instrument for counting and displaying after preamplification, and the instantaneous flow and the accumulated flow are obtained according to the pulse number and the accumulated pulse number in unit time. The floating block 21 of the floating block density measuring component floats upwards along the upright pole 20 under the buoyancy of the fluid and is extruded onto the capacitive sensor 22, and the capacitive sensor 22 transmits data to the integrating instrument to calculate and display the density of the fluid. The floating block 21 is made of PTFE material, so that the fluid corrosion is reduced.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements made by the method concept and technical solution of the present invention or directly applied to other occasions without improvement are all within the protection scope of the present invention.

Claims

1. A liquid flowmeter for a water supply pipeline is characterized by comprising a pretreatment part (1) and a measurement part (2) which are sequentially connected;

the pretreatment part (1) comprises a pretreatment shell (3), wherein a filtering component is arranged in the pretreatment shell (3) and is used for carrying out filtration pretreatment on fluid entering the measurement part (2); the measuring part (2) comprises a measuring shell (4), the measuring shell (4) is connected with a pretreatment shell (3), a turbine flow measuring assembly and a floating block density measuring assembly are sequentially arranged in the flow direction of fluid in the measuring shell (4), the turbine flow measuring assembly is used for measuring the flow of the fluid, and the floating block density measuring assembly is used for measuring the density of the fluid.

2. The liquid flowmeter for the water supply pipeline according to claim 1, wherein the pretreatment housing (3) comprises a first circular tube-shaped connecting end (5) at the front end, a square mounting cavity (6) at the middle part and a second circular tube-shaped connecting end (7) at the rear end, transition connecting pipes (8) are arranged between the first circular tube-shaped connecting end (5), the second circular tube-shaped connecting end (7) and the square mounting cavity (6), the second circular tube-shaped connecting end (7) is connected with the measurement housing (4), and the filter assembly is mounted at the square mounting cavity (6).

3. The flowmeter as claimed in claim 2, wherein the filter assembly comprises a support plate (9), a filter screen device (10) is fixed to the bottom of the support plate (9), the top ends of the front and rear side walls of the housing (6) are provided with fixing wing plates (11), the support plate (9) is erected on the housing (6) and is mounted on the two fixing wing plates (11) through bolts, and the filter screen device (10) is inserted into the housing (6) and is attached to each inner wall of the housing (6).

4. A liquid flowmeter for a water supply pipeline according to claim 3, wherein a seal is provided between the support plate (9) and the top of the square mounting chamber (6).

5. A liquid flowmeter for a water supply pipeline according to claim 4, wherein the first and second tubular connecting ends (5, 7) are each provided with a connecting flange (12).

6. A liquid flowmeter for water supply pipeline according to claim 5, wherein said support plate (9) is provided with a lifting handle (13) at the top.

7. The liquid flowmeter for the water supply pipeline according to claim 6, wherein the turbine flow measuring assembly comprises a front support (14) and a rear support (15) which are arranged inside the measuring shell (4), a turbine (16) is arranged between the front support (14) and the rear support (15), two ends of the turbine (16) are arranged on the front support (14) and the rear support (15) through bearings (17), a plurality of flow deflectors (18) are uniformly radiated on the front support (14) and the rear support (15) in a circumferential direction, the flow deflectors (18) are fixed on the inner wall of the measuring shell (4), a magnetoelectric proximity sensor (19) is arranged at the top of the measuring shell (4) corresponding to the turbine (16), and the magnetoelectric proximity sensor (19) and the integrating instrument are electrically connected with each other through data lines.

8. The flowmeter of claim 7, wherein the float density measuring assembly comprises a vertical rod (20) fixed at the bottom inside the measuring casing (4), the vertical rod (20) is slidably sleeved with a float (21), the top of the measuring casing (4) is provided with a capacitive sensor (22) corresponding to the float (21), and the capacitive sensor (22) and the integrating instrument are electrically connected with each other through a data line.

9. The flowmeter as claimed in claim 8, wherein the measuring case (4) is also provided with connecting flanges (12) at both end surfaces thereof, and the connecting flange (12) at the front end of the measuring case (4) is connected to the connecting flange (12) at the rear end of the pre-treatment case (3).