CN218994427U

CN218994427U - Wedge-shaped flowmeter

Info

Publication number: CN218994427U
Application number: CN202223522407.XU
Authority: CN
Inventors: 俞平权
Original assignee: Boca Measurement And Control Technology Shanghai Co ltd
Current assignee: Boca Measurement And Control Technology Shanghai Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-09
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to the technical field of flow meters, in particular to a wedge-shaped flow meter. Its technical scheme includes integrating instrument, differential pressure transmitter, wedge and survey buret, survey buret upper surface one side welding has the connecting pipe, the terminal welding of connecting pipe has the push-pull valve, push-pull valve upper surface welding has the fixed pipe, fixed pipe upper surface welding has mounting flange, mounting flange upper surface has sealing flange, sealing flange upper surface welding has screw-nut, the inside grafting of screw-nut has the lift lead screw, the one end that the lift lead screw is located the connecting pipe is connected with the forked tail piece through the pivot, wedge upper surface welding has the sealing block, the sealing block upper surface is equipped with the dovetail, sealing block upper surface one side is equipped with the breach, lift lead screw end-to-end connection has the hand wheel. The utility model is convenient for disassembling and assembling the wedge-shaped throttling element in the wedge-shaped flowmeter, thereby facilitating the later replacement of the wedge-shaped throttling element.

Description

Wedge-shaped flowmeter

Technical Field

The utility model relates to the technical field of flow meters, in particular to a wedge-shaped flow meter.

Background

The wedge flowmeter is a novel throttling differential pressure type flow measuring instrument, can carry out high-precision flow measurement under the conditions of high viscosity, low Reynolds number, reynolds number and 500 and can be used for fluid, and has incomparable advantages and irreplaceable effects in the flow measurement occasions with low flow velocity, small flow and large pipe diameter. The wedge-shaped flowmeter is mainly used for flow measurement of high-viscosity heavy oil, residual oil, diesel oil, engine oil and the like, industrial gas, coke oven gas, blast furnace gas, producer gas, urban gas, hydrogen, nitrogen, air, water vapor, sewage liquid and other mediums.

The wedge-shaped throttling element in the existing wedge-shaped flowmeter is usually fixedly welded inside the measuring tube, and in the welding process, the welding work is inconvenient because of the welding inside the measuring tube, and meanwhile, the wedge-shaped throttling element is inconvenient to replace after the wedge-shaped block is worn.

Disclosure of Invention

The utility model aims to provide a wedge-shaped flowmeter, which has the advantages of being convenient for disassembling and assembling a wedge-shaped throttling element in the wedge-shaped flowmeter, so that the later replacement of the wedge-shaped throttling element is convenient, and the problems that the wedge-shaped throttling element in the existing wedge-shaped flowmeter is usually fixedly welded in a measuring tube, and the welding work is inconvenient because the wedge-shaped throttling element is welded in the measuring tube in the welding process, and meanwhile, the wedge-shaped throttling element is inconvenient to replace after the wedge-shaped block is worn are solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: including integrating instrument, differential pressure transmitter, wedge and survey buret, survey buret upper surface one side welding has the connecting pipe, the terminal welding of connecting pipe has the push-pull valve, push-pull valve upper surface welding has the fixed pipe, fixed pipe upper surface welding has flange, flange upper surface mounting has sealing flange, sealing flange upper surface welding has screw-nut, the inside grafting of screw-nut has the lift lead screw, the lift lead screw is located the inside one end of connecting pipe and is connected with the forked tail piece through the pivot, wedge upper surface welding has the sealing block, the sealing block upper surface is equipped with the dovetail, sealing block upper surface one side is equipped with the breach, lift lead screw end-to-end connection has the hand wheel.

Preferably, the sealing flange and the fixing flange are connected through fixing bolts.

Preferably, a sealing ring is arranged on the outer surface of the sealing block, and the sealing ring plays a role in sealing.

Preferably, the two sides of the measuring tube are symmetrically welded with connecting flanges, and the measuring tube is connected into the fluid pipeline through the two connecting flanges.

Preferably, the pressure measuring pipes are connected to the two side positions of the lower surface of the differential pressure transmitter, the two ends of the pressure measuring pipes are respectively connected to the two side positions of the upper surface of the measuring pipe, the differential pressure transmitter measures the pressure difference before and after flowing through the wedge block through the two pressure measuring pipes, and the flow value is calculated through the pressure difference value.

Preferably, an integrating instrument is mounted on the upper surface of the differential pressure transmitter, the integrating instrument is electrically connected with the differential pressure transmitter, and the integrating instrument calculates the flow value through the differential pressure value detected by the differential pressure transmitter.

Preferably, a rectifier is arranged at one side of the inner part of the measuring tube, which is away from the connecting tube, and fluid passing through the wedge-shaped block tends to be stable after being rectified by the rectifier, so that the influence on the measurement of subsequent fluid is avoided.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, through arranging the gate valve, the connecting pipe, the fixed pipe, the sealing flange, the fixed flange, the sealing block, the dovetail groove, the dovetail block, the notch, the lifting screw rod and the screw rod nut, the effect of facilitating the disassembly and assembly of the wedge-shaped throttling element in the wedge-shaped flowmeter is achieved, so that the later replacement of the wedge-shaped throttling element is facilitated, when the wedge-shaped block is installed, the dovetail block is inserted into the dovetail groove from the notch, the connection of the sealing block, the wedge-shaped block and the lifting screw rod is completed, the fixed flange and the sealing flange are locked through the fixing bolt, the gate valve is opened, the lifting screw rod is driven to rotate through the hand wheel, and the wedge-shaped block is inserted into the measuring pipe, so that the wedge-shaped block can be reversely operated when being disassembled.

Drawings

FIG. 1 is a schematic diagram of the main sectional structure of the present utility model;

FIG. 2 is a schematic view of a partial main sectional structure of a fixing tube according to the present utility model;

FIG. 3 is a schematic view of a partial main sectional structure of a wedge block of the present utility model.

Reference numerals: 1. an integrating instrument; 2. a differential pressure transmitter; 3. a pressure taking tube; 4. a fixed tube; 5. a gate valve; 6. a connecting pipe; 7. a connecting flange; 8. wedge blocks; 9. a seal ring; 10. a measuring tube; 11. a rectifier; 12. a sealing flange; 13. a screw nut; 14. a fixed flange; 15. a hand wheel; 16. lifting the screw rod; 17. a dovetail groove; 18. a notch; 19. a sealing block; 20. dovetail blocks; 21. a rotating shaft.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

As shown in fig. 1 to 3, the wedge-shaped flowmeter provided by the utility model comprises an integrating instrument 1, a differential pressure transmitter 2, a wedge-shaped block 8 and a measuring tube 10, wherein one side of the upper surface of the measuring tube 10 is welded with a connecting tube 6, the tail end of the connecting tube 6 is welded with a gate valve 5, the upper surface of the gate valve 5 is welded with a fixed tube 4, the upper surface of the fixed tube 4 is welded with a fixed flange 14, the upper surface of the fixed flange 14 is provided with a sealing flange 12, the sealing flange 12 is connected with the fixed flange 14 through a fixed bolt, the upper surface of the sealing flange 12 is welded with a screw nut 13, a lifting screw 16 is inserted in the screw nut 13, one end of the lifting screw 16 positioned in the connecting tube 6 is connected with a dovetail block 20 through a rotating shaft 21, the upper surface of the wedge-shaped block 8 is welded with a sealing block 19, sealing washer 9 is installed to sealing washer 19 surface, sealing washer 19 upper surface is equipped with dovetail 17, sealing washer 19 upper surface one side is equipped with breach 18, lift lead screw 16 end-to-end connection has hand wheel 15, survey buret 10 both sides symmetry welding has flange 7, differential pressure transmitter 2 lower surface both sides position department is connected with pressure taking pipe 3, and two pressure taking pipe 3 ends are connected with survey buret 10 upper surface both sides position department respectively, differential pressure transmitter 2 upper surface installs integrator 1, integrator 1 and differential pressure transmitter 2 electric connection, the rectifier 11 is installed to survey buret 10 inside one side that deviates from connecting pipe 6, the fluid after the wedge 8 is through the rectifier 11 rectification tend to be steady, avoid causing the influence to the measurement of follow-up flow.

When the wedge block 8 is installed, the dovetail block 20 is inserted into the dovetail groove 17 from the notch 18, the connection of the sealing block 19, the wedge block 8 and the lifting screw rod 16 is completed, the fixed flange 14 and the sealing flange 12 are locked through the fixed bolts, the gate valve 5 is opened, the lifting screw rod 16 is driven to rotate through the hand wheel 15, the wedge block 8 is inserted into the measuring tube 10, when the wedge block 8 is disassembled, the reverse operation is carried out, when fluid flows in the measuring tube 10, the differential pressure transmitter 2 measures the pressure difference before and after flowing through the wedge block 8 through the two pressure taking tubes 3, and the flow rate value is calculated through the integrating instrument 1.

The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.

Claims

1. The utility model provides a wedge flowmeter, includes integrating instrument (1), differential pressure transmitter (2), wedge (8) and buret (10), its characterized in that: the utility model discloses a measuring tube (10) upper surface one side welding has connecting pipe (6), connecting pipe (6) end welding has push-pull valve (5), push-pull valve (5) upper surface welding has fixed pipe (4), fixed pipe (4) upper surface welding has mounting flange (14), mounting flange (12) upper surface welding has lead screw nut (13), inside grafting of lead screw nut (13) has lift lead screw (16), the one end that lift lead screw (16) are located connecting pipe (6) inside is connected with forked tail piece (20) through pivot (21), wedge (8) upper surface welding has sealing block (19), sealing block (19) upper surface is equipped with dovetail (17), sealing block (19) upper surface one side is equipped with breach (18), lift lead screw (16) end-to-end connection has hand wheel (15).

2. A wedge flowmeter according to claim 1, wherein: the sealing flange (12) and the fixing flange (14) are connected through fixing bolts.

3. A wedge flowmeter according to claim 1, wherein: the outer surface of the sealing block (19) is provided with a sealing ring (9).

4. A wedge flowmeter according to claim 1, wherein: connecting flanges (7) are symmetrically welded on two sides of the measuring tube (10).

5. A wedge flowmeter according to claim 1, wherein: the pressure measuring device is characterized in that pressure measuring pipes (3) are connected to the positions of two sides of the lower surface of the differential pressure transmitter (2), and the tail ends of the two pressure measuring pipes (3) are respectively connected with the positions of two sides of the upper surface of the measuring pipe (10).

6. A wedge flowmeter according to claim 1, wherein: an integrating instrument (1) is arranged on the upper surface of the differential pressure transmitter (2), and the integrating instrument (1) is electrically connected with the differential pressure transmitter (2).

7. A wedge flowmeter according to claim 1, wherein: a rectifier (11) is arranged on one side of the interior of the measuring tube (10) facing away from the connecting tube (6).