CN212228131U - Balance flowmeter - Google Patents

Abstract

The utility model discloses a balance flowmeter, including the balance sensor, install porous balance piece in the balance sensor, the balance sensor is detachable to be connected with and gets the pressure pipe, get pressure pipe and balance sensor through threaded connection, it is connected with the screwed joint to get the pressure pipe, the screwed joint is connected with the three valves that are used for controlling its break-make, three valves connect differential pressure transmitter; a flow guide ring is arranged outside the balance sensor, and the flow guide ring is clamped after the two parts are inserted. This flowmeter adopts the mode and the porous balance piece that voltage stabilizing ring multiple spot was got and presses, improves measurement accuracy, and the assembled installation conveniently changes the balance piece, improves the efficiency of commonality and test preparation work.

Description

Balance flowmeter

Technical Field

The utility model relates to a flow detection field especially relates to a balanced flowmeter in the pipeline.

Background

In the existing industrial metering scheme, a standard throttling device used for mass flow measurement is a standard orifice plate, and because only a single through hole is provided, dead zones on two sides of the through hole generate a large amount of eddy currents to consume kinetic energy of fluid, so that great pressure loss can be caused; noise formed by random and disordered eddy currents causes fluctuation of a voltage-taking point signal, so that the measurement linearity and repeatability are reduced; the single hole configuration requires a very long straight tube section to condition the flow field and restore pressure. Because the requirements of different measurement occasions on the throttling device are different, flowmeters with various specifications are required to be configured, the disassembly and assembly procedures are complicated, and the measurement process is delayed.

Disclosure of Invention

To the above problem, the utility model discloses a balanced flowmeter, this flowmeter adopt mode and the porous balance piece that steady voltage ring multiple spot was got the pressure, and balanced rectification when the fluid flows through the balance piece, the vortex is by the minimizing, forms approximate ideal fluid, improves measurement accuracy to the form of equipment is adopted with the honeycomb duct to the balance piece is conveniently changed, improves the efficiency of commonality and test preparation work.

A balance flowmeter comprises a balance sensor, wherein a porous balance sheet is installed in the balance sensor, the balance sensor is detachably connected with a pressure tapping pipe, the pressure tapping pipe is connected with the balance sensor through threads, the pressure tapping pipe is connected with a threaded joint, the threaded joint is connected with three valve groups for controlling the on-off of the threaded joint, and the three valve groups are connected with a differential pressure transmitter; a flow guide ring is arranged outside the balance sensor, and the flow guide ring is clamped after the two parts are inserted.

Preferably, a sealing ring is arranged between the differential pressure transmitter and the three valve groups.

Preferably, a sealing gasket is arranged between the three valve groups and the threaded joint.

Preferably, the clamping part is provided with a screw.

Preferably, the number of the screws is multiple, and the multiple screws are uniformly arranged in the circumferential direction.

The utility model has the advantages that:

1. the measurement precision is high

The balance flow sensor has the characteristic of a porous structure, can balance a flow field, reduce vortex, vibration and signal noise, greatly improve the stability of the flow field, and improve the accuracy by 5-10 times compared with the traditional throttling device by adopting a pressure stabilizing ring type multi-point pressure taking mode.

2. The straight pipe section has low requirement

The balance flow sensor can balance the flow field, is stably adjusted, and the pressure recovery is two times faster than that of the traditional throttling device, thereby greatly shortening the requirement on a straight pipe section. The straight pipe section can be as small as 0.5D-2D under most conditions, and especially for special or expensive pipelines, a large number of straight pipe sections can be omitted by adopting a balance flowmeter.

3. Low permanent pressure loss

The symmetrical balance design of the balance flowmeter reduces the formation of vortex and the turbulent friction, reduces the loss of kinetic energy, and under the same working condition, compared with the traditional throttling device, the pressure loss is reduced by 70 percent and is close to a Venturi tube, thereby saving considerable operating cost and being worth of popularization.

4. Convenient for dismounting and replacing balance sheet

The mode of interlude joint and threaded connection's mode make things convenient for quick replacement balancing piece, and interchangeability is strong, and the construction is convenient high-efficient.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of the present invention;

FIG. 2 is an enlarged view of A in FIG. 1;

in the figure: 1. the pressure difference transmitter comprises a pressure difference transmitter, 2, three valve groups, 3, a pressure taking pipe, 4, a measuring pipe, 5, a porous balance sheet, 6, a nut, 7, a balance sensor, 8 and a screw.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present invention, it should be understood that the terms "inside", "outside", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The utility model discloses a balanced flowmeter as shown in fig. 1-2 surveys buret 4 and divide into two parts, connects balance sensor 7 between the two survey burets, installs porous balance piece in the balance sensor, and the outside is provided with the water conservancy diversion ring, the water conservancy diversion ring is two parts and alternates back joint, and it is fixed with screw 8 in joint department, and screw and joint department are sealed with the raw material area. The screw is a plurality of, and a plurality of screws are the circumference and evenly arrange. The detachable pressure pipe 3 that is connected with of balance sensor, the pressure pipe passes through threaded connection with balance sensor to be got, and the junction sets up nut 6 that is used for location and locking. The pressure tapping pipe is connected with a threaded connector above, the threaded connector is connected with a three-valve set 2 used for controlling the on-off of the threaded connector above, a sealing gasket is arranged between the three-valve set and the threaded connector, the three-valve set is connected with a differential pressure transmitter 1, and a sealing ring is arranged between the differential pressure transmitter and the three-valve set.

This flowmeter adopts mode and porous balance piece that steady voltage ring multiple spot was got pressure, and the fluid is balanced the rectification when flowing through the balance piece, and the vortex is by the minimizing, forms approximate ideal fluid, improves measurement accuracy, and the form of equipment is adopted with the honeycomb duct to the balance piece, need change the balance piece of different apertures or hole number, only need loosen screw 6, balance sensor unpacks apart, take off the balance piece change can, the balance piece is changed convenient and fast, improve the efficiency of commonality and test preparation work.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. A balance flowmeter is characterized by comprising a balance sensor, wherein a porous balance sheet is installed in the balance sensor, the balance sensor is detachably connected with a pressure tapping pipe, the pressure tapping pipe is connected with the balance sensor through threads, the pressure tapping pipe is connected with a threaded joint, the threaded joint is connected with three valve groups for controlling the on-off of the threaded joint, and the three valve groups are connected with a differential pressure transmitter; a flow guide ring is arranged outside the balance sensor, and the flow guide ring is clamped after the two parts are inserted.

2. The balance flow meter according to claim 1, wherein a sealing ring is provided between the differential pressure transmitter and the three-valve set.

3. The balance flow meter according to claim 1, wherein a gasket is provided between the three valve groups and the threaded joint.

4. The balance flow meter of claim 1, wherein the clamping joint is provided with a screw.

5. The balance flow meter of claim 4, wherein the plurality of screws are circumferentially uniformly arranged.

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