KR102437740B1 - Flow meter to prevent ingress of foreign substances - Google Patents

Abstract

Disclosed is a flow meter for preventing foreign substances from entering, in which a filter is fully fixed inside a flow measurement gauge so as to maintain a stable fixed state without flowing even when pressure is applied from a fluid, thereby perfectly blocking the inflow of foreign substances. The flow meter to prevent inflow of foreign substances comprises: a flange tube which is installed between pipes through which fluid flows, connects the pipes to each other, and is configured to generate a pressure difference in the fluid flowing inside; and a flow measurement gauge which is installed on one side of the flange tube and configured to measure the flow rate of the fluid passing through the flange tube. The flow measurement gauge includes: a lower gauge which is coupled to the flange tube, communicates with the flange tube, and has channels through which the fluid enters and exits; an upper gauge which is coupled to an upper portion of the lower gauge, communicates with the channels, and is configured to display a change in flow rate of the fluid flowing into the interior through the lower gauge; and a disc-shaped filter which is pressed between the lower gauge and the upper gauge and is configured to filter the fluid flowing from the lower gauge to the upper gauge.

Description

Flow meter to prevent ingress of foreign substances

The present invention relates to a flow meter for preventing the inflow of foreign substances, and more particularly, to a flow meter for preventing the inflow of foreign substances capable of removing foreign substances from a fluid flowing into a gauge of a differential pressure flow meter.

In general, a differential pressure area flow meter is installed in a pipe through which a fluid flows and generates a pressure difference in the pipe when the fluid passes through the pipe to measure the flow rate of the fluid flowing into the pipe. There are area flow meters.

The flanged differential pressure area flowmeter is installed between pipelines and is installed on the outside of the flanged pipe so as to communicate with the straight pipe type flange pipe that generates a pressure difference when the fluid passes through, and the flange pipe, and the pressure generated from the flange pipe. It consists of a gauge that measures the flow rate of the fluid flowing into the interior due to the difference.

On the other hand, when a foreign material is included in the fluid flowing into the gauge of the differential pressure area type flowmeter, the flow path of the gauge is closed, causing a malfunction of the gauge, or it is difficult to accurately measure the flow rate.

Accordingly, in the prior art, a tubular filter net was inserted into the flow path of the gauge to filter foreign substances.

However, since the filter network applied to the conventional differential pressure area flow meter is not completely fixed in the gauge, when the fluid flows in, it flows by the pressure of the fluid, which causes a gap between the filter network and the flow path to prevent foreign substances. There was a problem that it was not completely filtered.

In addition, the filter network applied to the conventional differential pressure area flow meter is disposed in a form to block the flow of the fluid, thereby generating turbulence when the fluid passes through the filter network.

Accordingly, the fluid passing through the filter network becomes unstable in flow due to turbulence and flows into the gauge, which leads to inaccurate flow rate measurement results.

Laid-open Patent Publication No. 10-2021-0066222

The present invention has been devised to solve the above problems, and an object of the present invention is that the filter is completely fixed inside the flow measuring gauge so that it does not flow even when pressure is applied from the fluid and can maintain a stable fixed state, , to provide a flow meter for preventing the inflow of foreign substances that can completely block the inflow of foreign substances.

Another object of the present invention is to provide a flow meter for preventing the inflow of foreign substances that can accurately measure the flow rate by stabilizing the flow of the fluid introduced into the flow measuring gauge.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

A flow meter for preventing the inflow of foreign substances according to an embodiment of the present invention for solving the above problems is installed between pipes through which a fluid flows to connect the pipes to each other, and a flange configured to generate a pressure difference in the fluid flowing therein coffin; and a flow measurement gauge installed on one side of the flange tube and configured to measure the flow rate of the fluid passing through the flange tube, wherein the flow measurement gauge is coupled to the flange tube and communicates with the flange tube and a lower gauge having flow paths through which the fluid flows; an upper gauge coupled to an upper portion of the lower gauge, communicating with the flow passages, and configured to display a change in flow rate of the fluid introduced into the lower gauge through the lower gauge; and a disk-shaped disk filter press-fitted between the lower gauge and the upper gauge to filter the fluid flowing from the lower gauge to the upper gauge.

The flow measurement gauge may further include a tubular tube filter accommodated in the lower gauge, aligned coaxially with the disk filter, and configured to filter the fluid flowing into the lower gauge and flowing into the disk filter. have.

The disc filter includes: a filtration filter having filtration holes through which a fluid can pass therein so that foreign substances are caught and filtered from the flowing fluid; a stabilization filter disposed on the filtration filter and having lattice passages disposed parallel to the direction in which the fluid flows therein so as to stabilize the flow of the fluid; a magnetic ring disposed between the filtration filter and the stabilization filter and configured to collect metallic foreign substances from the fluid flowing between the filtration filter and the stabilization filter; a ring cap coupled to the periphery of the filtration filter and the stabilization filter to support and fix the filtration filter and the stabilization filter; a first packing ring coupled to one surface of the ring cap along the axial direction of the disk filter and configured to airtight between the upper gauge and the ring cap while being compressed between the upper gauge and the ring cap; and a second packing ring coupled to the other surface of the ring cap along the axial direction of the disk filter and configured to seal between the lower gauge and the ring cap while being compressed between the lower gauge and the ring cap.

The flow measurement gauge is accommodated in the lower gauge to support the tube filter, and to filter the fluid flowing into the lower gauge and flowing into the tube filter and the fluid flowing through the tube filter to the disk filter The auxiliary filter assembly further includes: a tubular pre-mesh filter accommodating the tube filter therein and filtering the fluid flowing into the lower gauge and flowing into the tube filter; a magnetic rod accommodated in the tube filter and configured to collect metallic foreign substances from the fluid flowing through the tube filter; It is disposed on the upper part of the tube filter, and is formed in a wedge structure in which the size of the inner diameter is gradually reduced along the direction in which the fluid flows, and passes through the tube filter inside to stabilize the flow of the fluid flowing to the disk filter. an auxiliary stabilizing filter in which lattice-shaped stabilization passages are formed; A 1-1 accommodating groove in which the upper end of the tube filter is accommodated, a 1-2 accommodating groove in which the upper end of the pre-mash filter is accommodated, a first fastening nut to which the upper end of the magnetic rod is fastened, and the auxiliary stabilizing filter are accommodated. And an upper fixing cap including a wedge-shaped seating groove supported; a lower fixing cap including a 2-1 accommodating groove for accommodating the lower end of the tube filter, a 2-2 accommodating groove for accommodating the lower end of the pre-mash filter, and a second fastening nut to which the lower end of the magnetic rod is fastened; It is press-fitted into the 1-1 accommodating groove and the 2-1 accommodating groove to pressurize and fix the pre-mash filter, and to collect metallic foreign substances from the fluid that passes through the pre-mash filter and flows toward the tube filter. first auxiliary magnetic rings; and press-fitted into the 1-2 accommodating groove and the 2-2 accommodating groove to pressurize and fix the tube filter, and to collect metallic foreign substances from the fluid flowing through the tube filter toward the auxiliary stabilization filter and second auxiliary magnetic rings.

The flow measurement gauge further includes an assembly fixing unit coupled to the lower gauge and configured to pressurize and support the auxiliary filter assembly, wherein the assembly fixing unit is screwed to the lower gauge to be attached to the auxiliary filter assembly. a pressure cap arranged in a coaxial state and configured to be raised and lowered along the axial direction through rotation; a pressing member having a portion accommodated in the pressure cap and the other portion supporting the lower fixing cap; and an elastic pressing member disposed between the pressing cap and the pressing member and configured to elastically press and support the pressing member when pressed by the pressing cap.

According to the embodiment of the present invention, since the filter is completely fixed to the inside of the flow measurement gauge, even when pressure is applied from the fluid, it does not flow and can maintain a stable fixed state, thereby completely blocking the inflow of foreign substances. .

In addition, since the flow is stabilized while the fluid introduced into the flow measuring gauge passes through the filter, accurate flow measurement can be made.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present invention.

1 is a front view schematically showing a state in which a flow meter for preventing the inflow of foreign substances is installed between pipes according to an embodiment of the present invention.
2 is a diagram schematically showing the internal structure of a flow measuring gauge according to an embodiment of the present invention.
3 is a cross-sectional view schematically illustrating a disk filter according to an embodiment of the present invention.
4 is an exploded perspective view showing an auxiliary filter assembly and an assembly fixing unit according to an embodiment of the present invention.
5 is a cross-sectional view showing a state in which the auxiliary filter assembly and the assembly fixing unit are installed in the lower gauge according to the embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

Specific structural or functional descriptions of the embodiments are disclosed for purposes of illustration only, and may be changed and implemented in various forms. Accordingly, the embodiments are not limited to a specific disclosure form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Although terms such as first or second may be used to describe various elements, these terms should be interpreted only for the purpose of distinguishing one element from another. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

When a component is referred to as being “connected” to another component, it may be directly connected or connected to the other component, but it should be understood that another component may exist in between.

Terms used in the examples are used for the purpose of description only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In addition, in the description with reference to the accompanying drawings, the same components are assigned the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In the description of the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. have meaning Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in an embodiment of the present invention, an ideal or excessively formal meaning is not interpreted as

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative and the present invention is not limited to the illustrated matters. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the case in which the plural is included is included unless otherwise explicitly stated.

In interpreting the components, it is interpreted as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between two parts unless 'directly' is used.

Reference to an element or layer “on” another element or layer includes any intervening layer or other element directly on or in the middle of another element. Like reference numerals refer to like elements throughout.

The size and thickness of each component shown in the drawings are illustrated for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated component.

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, and as those skilled in the art will fully understand, technically various interlocking and driving are possible, and each embodiment may be independently implemented with respect to each other. It may be possible to implement together in a related relationship.

1 is a front view schematically showing a state in which a flow meter for preventing the inflow of foreign substances is installed between pipes according to an embodiment of the present invention.

Referring to FIG. 1 , a flow meter 1000 (hereinafter referred to as a 'flow meter 1000') for preventing the inflow of foreign substances according to an embodiment of the present invention is installed between pipes P through which a fluid flows, and the pipes P ) are connected to each other and installed on one side of the flange pipe 1 and the flange pipe 1, which are configured to generate a pressure difference in the fluid flowing therein, and measure the flow rate of the fluid passing through the flange pipe 1 and a flow measuring gauge 2 configured to

2 is a view schematically showing the internal structure of a flow measuring gauge according to an embodiment of the present invention.

Referring to FIG. 2 , the flow measuring gauge 2 includes a lower gauge 21 , an upper gauge 22 and a disk filter 23 .

The lower gauge 21 is coupled to the flange tube 1 and communicates with the flange tube 1, and has flow passages 21A through which the fluid flows. For example, the flow paths 21A are an inflow path through which the fluid introduced into the interior through the flange pipe 1 flows toward the upper gauge 22 and the fluid discharged from the upper gauge 22 toward the flange pipe 1 side. It may include a flowing discharge path.

The upper gauge 22 is coupled to the upper portion of the lower gauge 21 to communicate with the flow passages 21A, and is configured to indicate a change in the flow rate of the fluid introduced into the lower gauge 21 through the lower gauge 21 . For example, the upper gauge 22 may include a gauge tube configured to indicate a change in flow rate, and a float accommodated in the gauge tube and suspended by a fluid.

The disk filter 23 is formed in a disk shape and is press-fitted between the lower gauge 21 and the upper gauge 22 to filter the fluid flowing from the lower gauge 21 to the upper gauge 22 . For example, the disk filter 23 may have a plurality of meshes or a plurality of holes.

That is, since the disc filter 23 is press-fitted between the lower gauge 21 and the upper gauge 22, it does not flow even when pressure is applied from the fluid, and thus the lower gauge 21 and the upper gauge 22 are completely shielded. Therefore, it is possible to completely block the inflow of foreign substances.

In addition, the flow measuring gauge 2 may further include a tubular tube filter 24 .

The tubular tube filter 24 is accommodated in the lower gauge 21 and aligned coaxially to the disk filter 23 , and is configured to filter the fluid flowing into the lower gauge 21 and flowing to the disk filter 23 . can

That is, in the flow meter 1000, the filters are sequentially disposed on the lower gauge 21 along the direction in which the fluid flows, so that the fluid is filtered step by step, thereby maximizing the filtration efficiency.

3 is a cross-sectional view schematically illustrating a disk filter according to an embodiment of the present invention.

Referring to FIG. 3 , the disk filter 23 may be configured to stabilize the flow of a fluid.

The disk filter 23 may include a filtration filter 231 , a stabilization filter 232 , a magnetic ring 233 , a ring cap 234 , a first packing ring 235 , and a second packing ring 236 .

The filtering filter 231 may have filtering holes 231A through which the fluid can pass therein so that foreign substances are caught and filtered from the flowing fluid.

The stabilization filter 232 is disposed on the filtration filter 231 , and lattice passages 232A arranged in parallel to the direction in which the fluid flows so that the flow of the fluid is stabilized may be formed therein. That is, the lattice passages 232A formed in the stabilization filter 232 may convert the turbulent flow of the fluid into a laminar flow to stabilize the flow of the fluid.

The magnetic ring 233 is disposed between the filtration filter 231 and the stabilization filter 232 , and may collect metallic foreign substances from the fluid flowing between the filtration filter 231 and the stabilization filter 232 .

The ring cap 234 may be coupled to the circumference of the filtration filter 231 and the stabilization filter 232 to support and fix the filtration filter 231 and the stabilization filter 232 .

The first packing ring 235 is coupled to one surface of the ring cap 234 along the axial direction of the disk filter 23, and is compressed between the upper gauge 22 and the ring cap 234 while the upper gauge 22 and the ring cap ( 234) can be confidential.

The second packing ring 236 is coupled to the other surface of the ring cap 234 along the axial direction of the disk filter 23, and is compressed between the lower gauge 21 and the ring cap 234 while the lower gauge 21 and the ring cap ( 234) can be confidential.

4 is an exploded perspective view showing an auxiliary filter assembly and assembly fixing unit according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view showing a state in which the auxiliary filter assembly and assembly fixing unit according to an embodiment of the present invention are installed on a lower gauge .

4 and 5 , the flow measurement gauge 2 may further include an auxiliary filter assembly 25 and an assembly fixing unit 26 .

The auxiliary filter assembly 25 is accommodated in the lower gauge 21 to support the tube filter 24, and the fluid flowing into the lower gauge 21 and flowing into the tube filter 24 and the tube filter 24 pass through It may be configured to filter the fluid flowing to the disc filter 23 .

The auxiliary filter assembly 25 includes a pre-mash filter 251, a magnetic rod 252, an auxiliary stabilizing filter 253, an upper fixing cap 254, a lower fixing cap 255, first auxiliary magnetic rings 256 and Second auxiliary magnetic rings 257 may be included.

The pre-mash filter 251 is formed in a tubular shape to accommodate the tube filter 24 therein, and can filter the fluid flowing into the lower gauge 21 and flowing toward the tube filter 24 .

The magnetic rod 252 may be accommodated in the tube filter 24 and collect metallic foreign substances from the fluid flowing through the tube filter 24 .

The auxiliary stabilization filter 253 is disposed on the tube filter 24 and may be formed in a wedge structure in which the size of the inner diameter is gradually reduced along the direction in which the fluid flows.

In addition, lattice-shaped stabilization passages 253A for stabilizing the flow of the fluid flowing through the tube filter 24 to the disk filter 23 may be formed in the auxiliary stabilization filter 253 .

The upper fixing cap 254 includes a 1-1 accommodating groove 254A in which the upper end of the tube filter 24 is accommodated, a 1-2 accommodating groove 254B in which the upper end of the pre-mash filter 251 is accommodated, and a magnetic rod. A first fastening nut 254C to which the upper end of the 252 is fastened and a wedge-shaped seating groove 254D in which the auxiliary stabilizing filter 253 is accommodated and supported may be included.

The lower fixing cap 255 includes a 2-1 accommodating groove 255A in which the lower end of the tube filter 24 is accommodated, a 2-2 accommodating groove 255B in which the lower end of the pre-mash filter 251 is accommodated, and a magnetic rod. A second fastening nut 255C to which the lower end of the 252 is fastened may be included.

The first auxiliary magnetic rings 256 are press-fitted into the 1-1 accommodating groove 254A and the 2-1 accommodating groove 255A to press and fix the pre-mash filter 251 , and remove the pre-mash filter 251 . It is possible to collect metallic foreign substances from the fluid that passes through and flows toward the tube filter 24 .

The second auxiliary magnetic rings 257 are press-fitted into the 1-2 accommodating groove 254B and the 2-2 accommodating groove 255B to press and fix the tube filter 24, and pass through the tube filter 24 to Metallic foreign substances may be collected from the fluid flowing toward the auxiliary stabilization filter 253 .

The assembly fixing unit 26 may be coupled to the lower gauge 21 to pressurize and support the auxiliary filter assembly 25 .

The assembly fixing unit 26 may include a pressure cap 261 , a pressure member 262 , and an elastic pressure member 263 .

The pressure cap 261 is screwed to the lower gauge 21 to be coaxially aligned with the auxiliary filter assembly 25, and can be raised and lowered along the axial direction through rotation. For example, threads may be formed on the outer surface of the pressure cap 261 , and a receiving groove in which a portion of the elastic pressure member 263 is accommodated and supported may be formed inside the pressure cap 261 .

The pressing member 262 is spaced apart from the pressing cap 261 , a part of the pressing member 262 is accommodated in the pressing cap 261 , and the other part of the pressing member 262 supports the lower fixing cap 255 . can do.

The elastic pressure member 263 is disposed between the pressure cap 261 and the pressure member 262 , and when pressed by the pressure cap 261 , may elastically press and support the pressure member 262 .

As such, according to the embodiment of the present invention, since the filters are completely fixed inside the flow measurement gauge 2, they do not flow even when pressure is applied from the fluid and can maintain a stably fixed state, thereby preventing the inflow of foreign substances. can be completely blocked.

In addition, since the flow is stabilized while the fluid introduced into the flow measurement gauge 2 passes through the filters, accurate flow measurement can be made.

Although the embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made within the scope without departing from the technical spirit of the present invention. . Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

1000. Flowmeter
1. Flange pipe
2. Flow measuring gauge
21. Lower gauge
21A. euros
22. Upper gauge
23. Disc Filter
231. Filtration filter
231A. filter holes
232. Stabilization filter
232A. grid channels
233. Magnetic Ring
234. Ring Cap
235. First packing ring
236. Second packing ring
24. Tube filter
25. Auxiliary filter assembly
251. Pre-mash filter
252. Magnetic rod
253. Auxiliary Stabilization Filter
253A. stabilization euros
254. Upper fixed cap
254A. 1-1 Accommodation Home
254B. 1-2 accommodation home
254C. first fastening nut
254D. seating home
255. Lower fixing cap
255A. 2-1 accommodation home
255B. 2-2 Accommodation Home
255 C. 2nd fastening nut
256. First auxiliary magnetic rings
257. Second auxiliary magnetic rings
26. Assembly fixing unit
261. Pressure cap
262. Pressing member
263. Elastic pressing member
P. Pipes

Claims (3)

a flange pipe installed between the pipes through which the fluid flows, connecting the pipes to each other, and configured to generate a pressure difference in the fluid flowing therein; and
It is installed on one side of the flange pipe, the flow measurement gauge is configured to measure the flow rate of the fluid passing through the flange pipe; includes,
The flow measurement gauge is
a lower gauge coupled to the flange pipe and communicating with the flange pipe, and having flow paths through which the fluid flows;
an upper gauge coupled to an upper portion of the lower gauge, communicating with the flow passages, and configured to display a change in flow rate of the fluid introduced into the lower gauge through the lower gauge;
a disk-shaped disk filter press-fitted between the lower gauge and the upper gauge and configured to filter the fluid flowing from the lower gauge to the upper gauge; and,
and a tubular tube filter accommodated in the lower gauge, aligned coaxially with the disk filter, and configured to filter the fluid flowing into the lower gauge and flowing into the disk filter. delete According to claim 1,
The disk filter is
a filtration filter in which filtration holes through which a fluid can pass are formed so that foreign substances are caught and filtered from the flowing fluid;
a stabilization filter disposed on the filtration filter and having lattice passages disposed parallel to the direction in which the fluid flows therein so as to stabilize the flow of the fluid;
a magnetic ring disposed between the filtration filter and the stabilization filter and configured to collect metallic foreign substances from the fluid flowing between the filtration filter and the stabilization filter;
a ring cap coupled to the periphery of the filtration filter and the stabilization filter to support and fix the filtration filter and the stabilization filter;
a first packing ring coupled to one surface of the ring cap along the axial direction of the disk filter and configured to airtight between the upper gauge and the ring cap while being compressed between the upper gauge and the ring cap; and
A second packing ring coupled to the other surface of the ring cap along the axial direction of the disk filter and configured to seal between the lower gauge and the ring cap while being compressed between the lower gauge and the ring cap; for flowmeters.

Images