CN211576261U

CN211576261U - Novel differential pressure flowmeter

Info

Publication number: CN211576261U
Application number: CN202020671479.2U
Authority: CN
Inventors: 张咏
Original assignee: Jiangsu Xinyada Instrument Manufacturing Co ltd
Current assignee: Jiangsu Xinyada Instrument Manufacturing Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-09-25
Anticipated expiration: 2030-04-28

Abstract

The utility model provides a novel differential pressure flowmeter belongs to flow measurement technical field, including a pipe body, body inside has set gradually entrance, necking down section, choke section and flaring section from a left side to the right side, the body outside is provided with differential pressure sensor, differential pressure sensor one end through the second body with entrance intercommunication, the differential pressure sensor other end through first body with choke section intercommunication, the entrance inside with flaring section inside equal activity is provided with the closing plate, the body outer wall is provided with and is used for driving the drive assembly that the closing plate reciprocated, entrance internally mounted has a plurality of interval distribution's filter screen, the filter screen is located the closing plate with between the second body port. The embodiment of the utility model provides a have convenient to use and the high advantage of measurement accuracy, through the setting of filter screen, can filter the debris that mix with in the fluid to improve flow measurement result's accuracy.

Description

Novel differential pressure flowmeter

Technical Field

The utility model belongs to the technical field of the flow measurement, specifically a novel differential pressure flowmeter.

Background

The differential pressure type flowmeter is based on the throttling principle of fluid flow, utilizes the pressure difference generated when fluid flows through a throttling device to realize flow measurement, and is one of the most mature and common methods for measuring the flow in the current production.

At present, when a differential pressure flowmeter measures fluid, the measured fluid usually contains a large amount of impurities, and the impurities can be attached to the inner wall of a pipeline during long-term measurement, so that the differential pressure is unstable, and the measurement result is influenced.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the embodiments of the present invention is to provide a novel differential pressure flowmeter.

In order to solve the technical problem, the utility model provides a following technical scheme:

a novel differential pressure flowmeter comprises a pipe body, wherein an inlet section, a necking section, a throat section and an expanding section are sequentially arranged in the pipe body from left to right, a differential pressure sensor is arranged outside the pipe body, one end of the differential pressure sensor is communicated with the inlet section through a second pipe body, the other end of the differential pressure sensor is communicated with the throat section through a first pipe body, sealing plates are movably arranged in the inlet section and the flaring section, a driving component for driving the sealing plates to move up and down is arranged on the outer wall of the pipe body, a plurality of filter screens distributed at intervals are arranged in the inlet section, the filter screens are positioned between the sealing plate and the port of the second pipe body, a discharge pipe extending to the outside of the pipe body is arranged at the lower left of each group of filter screens, arrange and be provided with the valve on the material pipe, the body outside with the flaring section corresponds the position and is provided with to the air feed subassembly of body inner chamber air feed.

As a further improvement of the utility model: the drive assembly comprises an extension box fixedly arranged on the outer wall of the pipe body and a drive rod rotatably arranged inside the extension box, the bottom of the drive rod extends to the inside of the sealing plate and is in threaded fit with the sealing plate, and the upper end of the drive rod extends out of the extension box.

As a further improvement of the utility model: the upper end of the driving rod extends out of the extension box and is fixedly connected with a handle.

As a further improvement of the utility model: and a bearing in running fit with the driving rod is fixedly arranged in the extension box.

As a further improvement of the present invention: the air supply assembly is in including fixed setting the air pump of body outer wall and connecting the trachea of air pump output, the trachea is kept away from the one end of air pump extends to inside the flaring section, just the trachea is given vent to anger the port and is located the left side below of installing at the inside closing plate of flaring section.

Compared with the prior art, the beneficial effects of the utility model are that:

the embodiment of the utility model has the advantages of convenient use and high measurement precision, and can filter sundries mixed in the fluid through the arrangement of the filter screen so as to improve the precision of the flow measurement result; along with the continuous filtration of filter screen, when filter screen one side adnexed debris was too much, accessible drive assembly drove the closing plate and removes to the body is inside, utilize the closing plate to seal entrance and flaring section, and open the valve, blow the air to the inside drum of body through air feed assembly this moment, air current passes through the flaring section in proper order, inside throat section and the throat section gets into the entrance, thereby will attach to the debris of filter screen lateral wall and carry out the blowback, the air current who carries debris is discharged from the discharge tube, thereby realize the automatic clearance of filter screen, in order to guarantee the continuous filter effect of filter screen.

Drawings

FIG. 1 is a schematic diagram of a novel differential pressure flow meter;

FIG. 2 is a schematic structural diagram of a sealing plate in the novel differential pressure flowmeter;

FIG. 3 is an enlarged view of area A of FIG. 1;

in the figure: the device comprises a pipe body 1, an inlet section 2, a discharge pipe 3, a valve 4, a filter screen 5, a necking section 6, a throat section 7, an expanding section 8, an air pipe 9, an air pump 10, a first pipe body 11, a differential pressure sensor 12, a second pipe body 13, a sealing plate 14, an extension box 15, a driving rod 16, a handle 17 and a bearing 18.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1-3, the present embodiment provides a novel differential pressure flowmeter, including a pipe body 1, an inlet section 2, a throat section 6, a throat section 7, and a flaring section 8 are sequentially disposed inside the pipe body 1 from left to right, a differential pressure sensor 12 is disposed outside the pipe body 1, one end of the differential pressure sensor 12 is communicated with the inlet section 2 through a second pipe 13, the other end of the differential pressure sensor 12 is communicated with the throat section 7 through a first pipe 11, sealing plates 14 are movably disposed inside the inlet section 2 and inside the flaring section 8, a driving assembly for driving the sealing plates 14 to move up and down is disposed on an outer wall of the pipe body 1, a plurality of filter screens 5 are disposed inside the inlet section 2, the filter screens 5 are disposed between the sealing plates 14 and the second pipe 13, a discharge pipe 3 extending to the outside of the pipe body 1 is disposed below the left of each set of the filter screens 5, arrange and be provided with valve 4 on the material pipe 3, body 1 outside with flaring section 8 corresponds the position and is provided with to the air feed subassembly of 1 inner chamber air feed of body.

Through the arrangement of the filter screen 5, impurities mixed in the fluid can be filtered, so that the accuracy of a flow measurement result is improved; along with filter screen 5's continuous filtration, when filter screen 5 one side adnexed debris was too much, accessible drive assembly drove closing plate 14 and moves to 1 inside of body, utilize closing plate 14 to seal inlet section 2 and flaring section 8, and open valve 4, blow the air to 1 inside of body through air feed assembly this moment, the air current passes through flaring section 8 in proper order, throat section 7 and necking section 6 get into inlet section 2 inside, thereby will attach to the debris of 5 lateral walls of filter screen and carry out the blowback, the air current that carries debris is discharged from discharge pipe 3, thereby realize filter screen 5's automatic clearance, in order to guarantee filter screen 5's continuous filter effect.

Specifically, the driving assembly comprises an extension box 15 fixedly arranged on the outer wall of the pipe body 1 and a driving rod 16 rotatably arranged inside the extension box 15, the bottom of the driving rod 16 extends into the sealing plate 14 and is in threaded fit with the sealing plate 14, and the upper end of the driving rod 16 extends out of the extension box 15.

By rotating the driving rod 16, the driving rod 16 is in threaded fit with the sealing plate 14, so that the driving rod 16 drives the sealing plate 14 to move up and down when rotating, and further the sealing plate 14 seals and opens the inner cavities of the inlet section 2 and the flaring section 8.

Specifically, a bearing 18 rotatably engaged with the driving rod 16 is fixedly disposed inside the extension box 15.

By the arrangement of the bearing 18, the driving rod 16 can be ensured to rotate smoothly inside the extension box 15, and the sealing plate 14 can be ensured to move up and down smoothly.

Specifically, the air feed subassembly is including fixed setting up the air pump 10 and the connection of 1 outer wall of body are in the trachea 9 of air pump 10 output, trachea 9 is kept away from the one end of air pump 10 extends to inside the flaring section 8, just trachea 9 is given vent to anger the port and is located and installs the left side below at the inside closing plate 14 of flaring section 8.

Air is blown to the inside of the flaring section 8 through the air pump 10 and the air pipe 9, and due to the limitation of the two groups of sealing plates 14, air flow flows into the inside of the inlet section 2 from the flaring section 8 to the throat section 7 and the necking section 6, so that the attachments on the side wall of the filter screen 5 are subjected to back blowing, and the attachments are discharged from the discharging pipe 3 along with the air flow.

The working principle of the embodiment is as follows: through the arrangement of the filter screen 5, impurities mixed in the fluid can be filtered, so that the accuracy of a flow measurement result is improved; along with filter screen 5's continuous filtration, when filter screen 5 one side adnexed debris was too much, accessible drive assembly drove closing plate 14 and moves to 1 inside of body, utilize closing plate 14 to seal inlet section 2 and flaring section 8, and open valve 4, blow the air to 1 inside of body through air feed assembly this moment, the air current passes through flaring section 8 in proper order, throat section 7 and necking section 6 get into inlet section 2 inside, thereby will attach to the debris of 5 lateral walls of filter screen and carry out the blowback, the air current that carries debris is discharged from discharge pipe 3, thereby realize filter screen 5's automatic clearance, in order to guarantee filter screen 5's continuous filter effect.

Example 2

Referring to fig. 1, in this embodiment, compared with embodiment 1, an upper end of the driving rod 16 extends to an outside of the extension box 15 and is fixedly connected with a handle 17.

The embodiment of the utility model has the advantages of convenient use and high measurement precision, and through the arrangement of the filter screen 5, sundries mixed in the fluid can be filtered, so as to improve the precision of the flow measurement result; along with filter screen 5's continuous filtration, when filter screen 5 one side adnexed debris was too much, accessible drive assembly drove closing plate 14 and moves to 1 inside of body, utilize closing plate 14 to seal inlet section 2 and flaring section 8, and open valve 4, blow the air to 1 inside of body through air feed assembly this moment, the air current passes through flaring section 8 in proper order, throat section 7 and necking section 6 get into inlet section 2 inside, thereby will attach to the debris of 5 lateral walls of filter screen and carry out the blowback, the air current that carries debris is discharged from discharge pipe 3, thereby realize filter screen 5's automatic clearance, in order to guarantee filter screen 5's continuous filter effect.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A novel differential pressure flowmeter comprises a pipe body (1), wherein an inlet section (2), a necking section (6), a throat section (7) and a flaring section (8) are sequentially arranged inside the pipe body (1) from left to right, a differential pressure sensor (12) is arranged outside the pipe body (1), one end of the differential pressure sensor (12) is communicated with the inlet section (2) through a second pipe body (13), the other end of the differential pressure sensor (12) is communicated with the throat section (7) through a first pipe body (11), the novel differential pressure flowmeter is characterized in that sealing plates (14) are movably arranged inside the inlet section (2) and inside the flaring section (8), a driving assembly for driving the sealing plates (14) to move up and down is arranged on the outer wall of the pipe body (1), a plurality of filter screens (5) distributed at intervals are arranged inside the inlet section (2), and the filter screens (5) are positioned between the sealing plates (14) and the port of the second pipe body (13), every group all be provided with below the filter screen (5) left side and extend to arrange material pipe (3) outside body (1), be provided with valve (4) on arranging material pipe (3), body (1) outside with flaring section (8) correspond the position and are provided with to the air feed subassembly of body (1) inner chamber air feed.

2. The novel differential pressure flowmeter as claimed in claim 1, wherein the driving assembly comprises an extension box (15) fixedly arranged on the outer wall of the pipe body (1) and a driving rod (16) rotatably arranged inside the extension box (15), the bottom of the driving rod (16) extends to the inside of the sealing plate (14) and is in threaded fit with the sealing plate (14), and the upper end of the driving rod (16) extends out of the extension box (15).

3. The new differential pressure flowmeter as claimed in claim 2, characterized in that the upper end of the driving rod (16) protrudes outside the extension box (15) and is fixedly connected with a handle (17).

4. A novel differential pressure flow meter according to claim 2 or 3, characterized in that a bearing (18) is fixedly arranged inside the extension box (15) and is in running fit with the drive rod (16).

5. The novel differential pressure flowmeter as claimed in claim 1, wherein the air supply assembly comprises an air pump (10) fixedly arranged on the outer wall of the pipe body (1) and an air pipe (9) connected to the output end of the air pump (10), one end of the air pipe (9) far away from the air pump (10) extends to the inside of the flaring section (8), and the air outlet port of the air pipe (9) is positioned at the lower left of a sealing plate (14) installed inside the flaring section (8).