TW202219468A - Ultrasonic flow measurement device - Google Patents

Abstract

An ultrasonic flow measurement device according to one embodiment is disclosed. The ultrasonic measurement device includes a measuring tube including a body part having a flow path formed inside therein in a cylindrical shape through which fluid flows and a pair of fixing parts formed on at least one side of the body part and connected to the flow path; and a pair of ultrasonic sensors respectively disposed on the pair of fixing parts and spaced apart from the flow path by a predetermined distance.

Description

Ultrasonic flow measurement device

The embodiment relates to an ultrasonic flow measurement device suitable for small diameter pipes.

The time difference ultrasonic flowmeter is to place two piezoelectric ultrasonic sensors with a specific resonance frequency in the pipeline through which the fluid flows, and transmit and receive ultrasonic signals between the two piezoelectric ultrasonic sensors. A device for measuring the flow rate and flow rate of a fluid.

These conventional ultrasonic flow meters are used in various fields, such as various industrial sites.

However, in the case of small diameter or low flow pipes, the ultrasonic measurement method has the problem of no measurement or measurement error due to the close distance between the ultrasonic sensors or the ultrasonic The transit time difference is small.

Therefore, there is a need to develop a flow measurement device suitable for small diameter pipes.

This embodiment relates to an ultrasonic flow measurement device suitable for small-diameter pipes, wherein the ultrasonic sensor is separated from the flow path through which the fluid flows by a predetermined distance, and the ultrasonic signal emitted by the ultrasonic sensor is directly transmitted or in the pipe. The inner surface reflects and transmits at least once, so that the flow rate and flow rate of the fluid in small diameter pipes can be measured, and the flow rate and flow rate of the fluid can be measured more accurately.

According to an embodiment, the ultrasonic flow measurement device may include a measurement tube including a main body portion having a flow path formed in a cylindrical shape inside thereof, and a fluid flows through the flow path, and a pair of fixing portions, and the pair of fixed portions a fixed part is formed on at least one side of the main body part and is connected to the flow path; and a pair of ultrasonic sensors are respectively arranged on the pair of fixed parts and spaced from the flow path by a predetermined distance.

The pair of fixing parts may be formed on one side of the main body part and inclined at the same angle with respect to the central axis of the main body part, and the central axes may be formed to intersect each other.

The pair of fixing portions may be disposed on both sides of the main body portion and inclined at the same angle relative to the central axis of the main body portion, and the central axes may be spaced apart and formed in parallel.

The pair of fixing parts may be formed on two sides of the main body part and inclined at the same angle with respect to the central axis of the main body part, and the central axes are located on the same line.

The pair of fixing parts may be arranged to be spaced apart by a predetermined distance, and ultrasonic signals generated from one ultrasonic sensor may be reflected at least once on the inner surface of the main body part and transmitted to the other ultrasonic sensor.

The pair of fixing parts may be divided into a first area and a second area from one end to a position where they meet the flow path, and the diameter of the second area may be designed to be smaller than the diameter of the first area,

The pair of ultrasonic sensors may be disposed on the first area of the pair of fixing portions, and the end portion generating the ultrasonic signal may be disposed to be spaced apart from the second area by a predetermined distance.

The ultrasonic flow measurement device may further include a control unit, which receives the ultrasonic signals transmitted and received from the pair of ultrasonic sensors, and uses the transit time difference of the ultrasonic signals to measure the flow rate and flow of the fluid.

The ultrasonic flow measurement device may further include a connecting pipe, which connects the measuring pipe and the control part, and a cable, which is used for electrically connecting the pair of ultrasonic sensors and the controller arranged in the measuring pipe.

The ultrasonic flow measuring device may further comprise a measuring tube, which includes a main body part and two pairs of fixed parts, the main body part has a cylindrical flow path formed in the inside thereof, and the fluid flows through the flow path, and the two pairs of fixed parts are formed in the flow path. Two sides of the main body part are connected to the flow path; and two pairs of ultrasonic sensors are respectively disposed on the two pairs of fixing parts and spaced from the flow path by a predetermined distance.

The two pairs of fixing parts may include a pair of fixing parts formed on one side of the main body part and another pair of fixing parts formed on the other side of the main body part.

The two pairs of fixing parts may include a pair of fixing parts formed on both sides of the main body part and another pair of fixing parts formed on both sides of the main body part.

The central axis of each pair of the two pairs of fixing parts can be inclined at a certain angle based on the central axis of the main body part, and the two pairs of fixing parts can be formed such that the central axes intersect.

The two pairs of fixing parts may be arranged to be spaced apart by a predetermined distance, and ultrasonic signals generated from one ultrasonic sensor may be reflected at least once on the inner surface of the main body part and transmitted to the other ultrasonic sensor.

The two pairs of fixing parts may be divided into a first area and a second area from one end to a position where they meet the flow path, and the diameter of the second area may be designed to be equal to or smaller than the diameter of the first area.

The two pairs of ultrasonic sensors can be disposed on the first regions of the two pairs of fixing portions, and the ends that generate ultrasonic signals can be disposed to be spaced apart from the second regions by a predetermined distance.

The ultrasonic flow measurement device may further include a control unit, which receives the ultrasonic signals transmitted and received from the two pairs of ultrasonic sensors, and uses the transit time difference of the ultrasonic signals to measure the flow velocity and flow of the fluid.

The ultrasonic flow measurement device may further include a connecting pipe, which connects the measuring pipe and the control part, and a cable, which is used for electrically connecting the pair of ultrasonic sensors and the controller arranged in the measuring pipe.

According to this embodiment, by disposing the ultrasonic sensor at a predetermined distance from the flow path through which the fluid flows, the flow velocity and flow rate of the fluid in the small-diameter pipe can be measured.

According to this embodiment, the ultrasonic sensor is spaced a predetermined distance from the flow path through which the fluid flows, and the two pairs of ultrasonic sensors to which the ultrasonic signal is directly transmitted are arranged on both sides of the flow path, or the ultrasonic signal is The inner surface of the flow path reflects and transmits at least once, allowing a more accurate measurement of fluid velocity and flow.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical idea of the present invention is not limited to some embodiments to be described, but can be implemented in various forms, and within the scope of the technical idea of the present invention, one or more elements may be selectively combined and replaced to used between examples.

Also, unless explicitly defined and described, terms (including technical and scientific terms) used in the embodiments of the present invention will be commonly understood by those of ordinary skill in the art to which the present invention belongs. Commonly used terms, such as terms defined in dictionaries, may be interpreted in consideration of contextual meanings in the relevant technical field.

In addition, the terms used in the embodiments of the present invention are used to describe the embodiments, and are not used to limit the present invention.

In this specification, the singular form may also include the plural form, unless the context specifically dictates otherwise, if it is described as "A and/and at least one (or more than one) of B and C", it may include a One or more of all combinations of , B, and C.

Also, terms such as first, second, A, B, (a), and (b) may be used when describing constituent elements of the embodiments of the present invention.

These terms are only used to distinguish a constituent element from other constituent elements, and the terms are not used to limit the nature, order, or sequence of the constituent elements.

Also, if an element is described as being "connected," "coupled," or "contacting" another element, it is directly connected, coupled, or in contact with the other element. In addition, it may include being "connected," "coupled," or "contacting" by virtue of yet another element between the element and another element.

Furthermore, when described as being formed or placed on the "top (top) or bottom (bottom)" of each component, the top (top) or bottom (bottom) includes not only the case where the two components are in direct contact, but also A situation where one or more other components are formed or disposed between two components. Further, when expressed as "top (top) or bottom (bottom)", not only the upward direction but also the downward direction based on one component may be included.

This embodiment proposes a new concept in which the ultrasonic sensor is positioned at a predetermined distance from the flow path through which the fluid flows, and the ultrasonic signal emitted from the ultrasonic sensor is transmitted directly or on the inner surface of the pipe Reflect at least once and transmit.

In an embodiment, the ultrasonic sensor is spaced a predetermined distance from the flow path through which the fluid flows, and two pairs of ultrasonic sensors are arranged on both sides of the flow path, and the ultrasonic signal is sensed by the two pairs of ultrasonic waves device to launch directly.

In an embodiment, the ultrasonic sensor is arranged to be spaced a predetermined distance from the flow path through which the fluid flows, and the ultrasonic signal is reflected and transmitted at least once on the inner surface of the flow path.

1a to 1f are views showing an ultrasonic flow measurement device according to an embodiment of the present invention.

1a and 1b, an ultrasonic flow measurement device according to an embodiment of the present invention may include a measurement tube 100 through which fluid flows, an ultrasonic sensor 200, a control part 300, and a connection tube 400.

The measuring tube 100 is formed in a cylindrical shape so that the fluid can flow through an internal flow path. The measuring tube 100 is, for example, inserted and connected to the middle of water and sewage pipes and connected to pipes inside the water and sewage pipes, and the diameter of the pipes and the diameter of the flow path in the measuring pipe 100 may be the same.

The measuring tube 100 may include a main body part 110 , a fixing part 120 , a coupling part 130 and a cover 140 . The main body part 110 is formed in a cylindrical shape and has a flow path through which fluid flows, and the fixing part 120 has a pair formed on one side or both sides of the main body part 110 , and a pair of ultrasonic sensors 200 are provided on the main body part On 110 , a pair of coupling parts 130 are formed at both ends of the body part 110 and connected to the pipe, and a cover 140 is coupled to the pair of fixing parts 120 to seal the interior of each fixing part 120 . In addition, the fixing part 120 may have a connecting hole 100a through which a cable for connecting the ultrasonic sensor 200 and the control part 300 is inserted on one side thereof.

In addition, the material of the measuring tube 100 may include synthetic resin and metal. At this time, the main body portion 110 , the fixing portion 120 , and the coupling portion 130 constituting the measuring tube 100 may be integrally formed.

The ultrasonic sensor 200 may be disposed obliquely and coupled to one or both sides of the measurement tube 100 , and includes a pair to transmit and receive ultrasonic signals to a fluid flowing in a flow path inside the measurement tube 100 . That is, the ultrasonic sensor 200 may include a first ultrasonic sensor 200a and a second ultrasonic sensor 200b. The first ultrasonic sensor 200a can transmit ultrasonic signals and the second ultrasonic sensor 200b can receive ultrasonic signals, or the second ultrasonic sensor 200b can transmit ultrasonic signals and the first ultrasonic sensor 200a can receive ultrasonic signals.

At this time, the ultrasonic sensor 200 may be arranged to be spaced apart from the flow path inside the measuring tube 100 by a predetermined distance. The transit distance of the ultrasonic signal can be increased by the separation distance.

The control part 300 may be connected to the pair of ultrasonic sensors 200 installed in the measuring tube 100, and by receiving ultrasonic signals from the pair of ultrasonic sensors 200 and utilizing the transit time difference of the transmitted ultrasonic signals, The flow velocity and flow rate of the fluid flowing through the flow path inside the measuring tube 100 are calculated.

The control part 300 may include a casing 310 and a controller 320 . The controller 320 may be disposed inside the housing 310, and the controller 320 may be connected to the ultrasonic sensor installed in the measuring tube 100 by a cable, and by using a space between the two ultrasonic sensors. Transmit and receive ultrasonic signals to measure fluid velocity and flow. In addition, a connection hole 300 a through which a cable for connecting the ultrasonic sensor 200 and the controller 300 is inserted may be formed on one side of the housing 310 .

The connection pipe 400 may be provided between the measurement pipe 100 and the control part 300 and be screwed by a plurality of fasteners 100b formed on one side of the measurement pipe 100 and a plurality of fasteners 300b formed on one side of the control part 300 . Twisted and fixedly coupled.

The connecting tube 400 connects the connecting hole 100a formed on one side of the measuring tube 100 and the connecting hole 300a formed on one side of the casing 310 so that the cable connecting the ultrasonic sensor and the controller is located inside the casing And being prevented from being contacted from the outside, the connecting tube 400 is fixedly connected to the measuring tube 100 .

As shown in FIG. 1 c , instead of using the connecting tube 400 described in FIG. 1 b , it is also possible to directly connect the connecting hole 100 a of the measuring tube 100 and the connecting hole 300 a of the control unit 300 .

The ultrasonic flow measurement device according to the present embodiment may have some changes in configuration as required, as shown in FIGS. 1 d to 1 f .

2a and 2b are views for explaining the connection relationship between the ultrasonic sensor and the control section.

2a and 2b, according to an embodiment, a pair of ultrasonic sensors 200a and 200b disposed in the measuring tube 100 and the control part 300 may be connected by a cable 10 passing through the connecting tube 400. That is, the cable 10 may be disposed in and connected to the connection hole 100 a formed on one side of the measurement tube 100 , the connection pipe 400 , and the connection hole 300 a formed on one side of the housing 310 .

In addition, since the measurement tube 100 and the control unit 300 are connected by the connection tube 400 and are provided to be spaced apart by the length of the connection tube 400, thermal insulation and insulation are possible.

3a and 3b are cross-sectional views showing the structure of the ultrasonic flow measurement device according to the first embodiment.

Referring to FIG. 3 a , the ultrasonic flow measuring device according to the first embodiment is of a reflection type, and includes a pair of ultrasonic sensors 200 a and 200 b respectively provided at a pair of fixed pieces formed on one side of the main body portion 110 On each of the parts 120a and 120b, and the pair of ultrasonic sensors 200a and 200b are spaced a predetermined distance L1 from the flow path through which the fluid flows. Here, the diameter of the ultrasonic sensor and the diameter of the fixing portion may be designed to be the same as each other.

In this case, the ultrasonic sensors 200a and 200b can be divided into a first part that generates one end of the actual ultrasonic signal and a second part that supports the first part. The diameter of the ultrasonic sensor may represent the diameter of the first portion, and the diameter of the first portion may be equal to or smaller than the diameter of the second portion.

At this time, the fixing portions 120a and 120b are formed by inclining a predetermined angle θ with respect to the central axis of the main body portion, and the predetermined angle may be formed in a range of 30 degrees to 60 degrees, preferably, 45 degrees.

The ultrasonic signal generated from the first ultrasonic sensor 200a can be reflected once on the inner surface of the flow path and transmitted to the second ultrasonic sensor 200b, or the ultrasonic signal generated from the second ultrasonic sensor 200b The signal can be reflected once on the inner surface of the flow path and transmitted to the first ultrasonic sensor 200a.

According to the first embodiment, since the pair of ultrasonic sensors are arranged to be spaced apart from the flow path by a predetermined distance, the passing path of the ultrasonic signal can be increased by 2×L1.

Referring to Fig. 3b, the arrangement interval of the pair of ultrasonic sensors in Fig. 3a is designed to be twice as wide, so that the ultrasonic signal is reflected three times on the inner surface of the flow path and transmitted.

Thereby, the passing path of the ultrasonic signal can be increased (L2+L2) compared with the passing path of FIG. 3a.

4a to 4c are cross-sectional views showing the structure of the ultrasonic flow measuring device according to the second embodiment.

Referring to Fig. 4a, the ultrasonic flow measuring device according to the second embodiment is of a reflection type, and includes a pair of ultrasonic sensors 200a-1 and 200b-1, which are respectively provided on a pair of ultrasonic sensors formed on the main body portion 110-1. The pair of fixing portions 120a-1 and 120b-1 are spaced apart by a predetermined distance L1 from the flow path through which the fluid flows. Here, the diameter of the ultrasonic sensor and the diameter of the fixing portion may be designed to be different from each other.

4b and 4c, the fixing part 120b-1 is divided into a first area (A) and a second area (B) in the axial direction from one end, and the diameter of the second area (B) can be designed to be smaller than the first area (A) diameter. The ultrasonic sensor 200b-1 is disposed in the first area (A), and the diameter of the first area (A) is the same as that of the ultrasonic sensor 200b-1. Since the ultrasonic sensor 200b-1 vibrates the elastic body to generate ultrasonic signals, a predetermined gap (G) may be formed between the first area (A) and the ultrasonic sensor 200b-1 so that the vibration is not transmitted to the main body department.

Thereby, the radiation noise of the ultrasonic signals generated from the ultrasonic sensors 200a-1 and 200b-1 can be effectively controlled. In other words, a space in which the elastic bodies of the ultrasonic sensors 200a-1 and 200b-1 can vibrate can be secured, and the vibration of the elastic bodies is transmitted to the main body portion, thereby reducing the possibility of affecting the transmission direction of the ultrasonic signal. efficiency,

In addition, it is possible to prevent the formation of an air layer in the lower portion of the ultrasonic sensors 200a-1, 200b-1.

Referring to Figures 4d and 4e, the fluid flow in devices according to Example 1 and Example 2 is compared and illustrated. That is, as shown in FIG. 4d according to the first embodiment, when no space is formed at the lower part of the ultrasonic sensor, since the air layer (empty space) is formed at a lower part, the ultrasonic signal does not pass through the fluid completely, Instead, the fluid is passed through the air layer. On the other hand, as shown in FIG. 4e according to the second embodiment, when the end portion generating the ultrasonic signal is set to be spaced apart from the second area by a predetermined distance, the fluid flows into the spaced apart space so that no air layer is formed.

Therefore, compared with the first embodiment, the second embodiment is preferable, and when the ultrasonic sensor is arranged as shown in FIG. 4e according to the second embodiment, the factors that may affect the transmission of ultrasonic signals disappear, And accurate transit time can be measured.

According to the second embodiment, since the pair of ultrasonic sensors are arranged to be spaced apart from the flow path by a predetermined distance, the passing path of the ultrasonic signal can be increased by 2×L1.

Referring to FIG. 4f, the arrangement interval of the pair of ultrasonic sensors 200a-1 and 200b-1 in FIG. 4a is designed to be twice as wide, so that the ultrasonic signal is reflected three times on the inner surface of the flow path and transmitted.

Thereby, the passing path of the ultrasonic signal can be increased (L2+L2) compared with the passing path of FIG. 4a.

5 is a cross-sectional view showing the structure of an ultrasonic flow measurement device according to a third embodiment.

5, the ultrasonic flow measurement device according to the third embodiment is of a reflection type, and includes a pair of ultrasonic sensors 200a-2 and 200b-2, which are respectively provided in two parts formed in the main body part 110-2. The pair of fixing portions 120a-2 and 120b-2 on the side are spaced apart by a predetermined distance L1 from the flow path through which the fluid flows. Here, the diameter of the ultrasonic sensor and the diameter of the fixing portion may be designed to be the same as each other.

The pair of fixing parts 120a-2, 120b-2 may be formed on both sides of the main body part 110-2 such that the central axes of each fixing part 120a-2, 120b-2 are not positioned on the same line but are separated by a predetermined distance and parallel position.

In this structure, the ultrasonic signal generated from the first ultrasonic sensor can be reflected twice on the inner surface of the flow path and transmitted to the second ultrasonic sensor, or generated from the second ultrasonic sensor The ultrasonic signal can be reflected twice on the inner surface of the flow path and transmitted to the first ultrasonic sensor.

According to the third embodiment, since the pair of ultrasonic sensors is separated from the flow path by a predetermined distance, the passing path of the ultrasonic signal can be increased by (2×L1)+L2.

6a and 6b are cross-sectional views showing the structure of an ultrasonic flow measurement device according to a fourth embodiment.

Referring to FIG. 6a, the ultrasonic flow measurement device according to the fourth embodiment is of a reflection type, and includes a pair of ultrasonic sensors 200a-3 and 200b-3, which are respectively provided in a pair of ultrasonic sensors formed on both sides of the main body portion. The fixed parts 120a-3 and 120b-3 are spaced apart from the flow path through which the fluid flows by a predetermined distance L1. Here, the diameter of the ultrasonic sensor and the diameter of the fixing portion may be designed to be different from each other.

Since the structure of the fixing portion is the same as that of the fixing portion described in FIG. 5 , details are not repeated here.

According to FIG. 6a , since the pair of ultrasonic sensors are arranged to be spaced apart from the flow path by a predetermined distance, the passing path of the ultrasonic signal can be increased by (2×L1)+L2.

Referring to FIG. 6b, if the ultrasonic flow measuring device of FIG. 6a is changed to a linear type, the pair of ultrasonic sensors 200a-3 and 200b-3 may be respectively disposed on the pair formed on both sides of the main body portion 110-3 The fixed parts 120a-3 and 120b-3 are spaced apart from the flow path through which the fluid flows by a predetermined distance L1. Here, the diameter of the ultrasonic sensor and the diameter of the fixing portion may be designed to be different from each other.

The pair of fixing portions 120a-3 and 120b-3 may be formed on both sides of the main body portion 110-3 and inclined at the same angle based on the central axis of the main body portion, so that the central axes may be located on the same line.

7a to 7d are cross-sectional views showing the structure of an ultrasonic flow measurement device according to a fifth embodiment.

Referring to Fig. 7a, the ultrasonic flow measuring device according to the fifth embodiment is a linear type, including two pairs of ultrasonic sensors (200a1-4, 200b1-4), (200a2-4, 200b2-4), which are respectively arranged At two pairs of upper fixing portions (120a1-4, 120b1-4), (120a2-4, 120b2-4) formed on both sides of the main body portion 110-4 and spaced a predetermined distance from the flow path through which the fluid flows L1. Here, the diameter of the ultrasonic sensor and the diameter of the fixing portion may be designed to be the same as each other.

Each pair of fixing parts (120a1-4, 120b1-4), (120a2-4, 120b2-4) may be formed on both sides of the main body part (110-4), and each pair may be inclined by a certain amount based on the central axis of the main body part angle, and the central axes are positioned on the same line, and the two central axes of the fixing portion can cross each other.

Referring to Fig. 7b, the ultrasonic flow measurement device according to the fifth embodiment is a reflection type, including two pairs of ultrasonic sensors (200a1-4, 200b2-4), (200a2-4, 200b1-4), which are respectively provided In two pairs of fixing portions (120a1-4, 120b2-4), (120a2-4, 120b1-4) formed on both sides of the main body portion 110-4 and spaced apart from the flow path through which the fluid flows by a predetermined distance L1 . Here, the diameter of the ultrasonic sensor and the diameter of the fixing portion may be designed to be the same as each other.

A pair of fixing parts (120a1-4, 120b2-4) is formed on one side of the main body part, and the other pair of fixing parts (120a2-4, 120b1-4) is formed on the other side of the main body part. The two pairs of fixing portions (120a1-4, 120b2-4) and (120a2-4, 120b1-4) are formed symmetrically with respect to the longitudinal axis perpendicular to the central axis of the main body portion.

Referring to FIG. 7C , the ultrasonic flow measurement device according to the fifth embodiment is a reflection type, including two pairs of ultrasonic sensors (200a1-4, 200b1-4), (200a2-4, 200b2-4), which are respectively provided At two pairs of upper fixing portions (120a1-4, 120b1-4), (120a2-4, 120b2-4) formed on both sides of the main body portion 110-4 and spaced a predetermined distance from the flow path through which the fluid flows L1. Here, the diameter of the ultrasonic sensor and the diameter of the fixing portion may be designed to be the same as each other.

Each pair of fixing parts (120a1-4, 120b1-4), (120a2-4, 120b2-4) is formed on both sides of the main body part 110-4, and each pair is based on the central axis of the main body part 110-4 to A certain angle is inclined so that the central axes of each pair of fixing members (120a1-4, 120b1-4), (120a2-4, 120b2-4) are not on the same line, and are positioned at a predetermined distance and in parallel. The central shafts of the two pairs of fixing portions formed at respective positions with respect to the central axis of the main body portion may be formed to cross each other.

Referring to FIG. 7d, the ultrasonic flow measurement device according to the fifth embodiment is a reflection type, including two pairs of ultrasonic sensors (200a1-4, 200b2-4), (200a2-4, 200b1-4), which are respectively arranged In two pairs of fixing portions (120a1-4, 120b2-4), (120a2-4, 120b1-4) formed on both sides of the main body portion 110-4 and spaced apart from the flow path through which the fluid flows by a predetermined distance L1 . Here, the diameter of the ultrasonic sensor and the diameter of the fixing portion may be designed to be the same as each other.

A pair of fixing parts (120a1-4, 120b2-4) are formed on one side of the main body part (110-4), and the other pair of fixing parts (120a2-4, 120b1-4) are formed on the other side of the main body part 110-4 , and the two pairs of fixing parts (120a1-4, 120b2-4) and (120a2-4, 120b1-4) are symmetrically formed based on the longitudinal axis perpendicular to the central axis of the main body part 110-4.

8a to 8d are cross-sectional views showing the structure of an ultrasonic flow measurement device according to a sixth embodiment.

Referring to FIG. 8a, the ultrasonic flow measurement device according to the sixth embodiment is a linear type, which includes two pairs of ultrasonic sensors (200a1-5, 200b1-5), (200a2-5, 200b2-5), which are respectively set Two pairs of fixing parts (120a1-5, 120b1-5), (120a2-5, 120b2-5) are formed on both sides of the main body part (110-5), and are separated from the flow path through which the fluid flows by a predetermined distance Distance (L1). Here, the diameter of the ultrasonic sensor and the diameter of the fixing portion may be designed to be different from each other.

Each pair of fixing parts (120a1-5, 120b1-5), (120a2-5, 120b2-5) is formed on both sides of the main body part (110-5), and each pair is inclined based on the central axis of the main body part 110-5 At a certain angle, the central axes are located on the same line, and the two central axes of the fixed portion can cross each other.

Referring to Fig. 8b, the ultrasonic flow measurement device according to the sixth embodiment is a reflection type, including two pairs of ultrasonic sensors (200a1-5, 200b2-5), (200a2-5, 200b1-5), which are respectively provided At two pairs of fixing portions (120a1-5, 120b2-5), (120a2-5, 120b1-5) formed on both sides of the main body portion 110-5 and spaced apart from the flow path through which the fluid flows by a predetermined distance L1 . Here, the diameter of the ultrasonic sensor and the diameter of the fixing portion may be designed to be different from each other.

A pair of fixing parts (120a1-5, 120b2-5) are formed on one side of the main body part (110-5), and the other pair of fixing parts (120a2-5, 120b1-5) are formed on the other side of the main body part 110-5 , and the two pairs of fixing parts (120a1-5, 120b2-5) and (120a2-5, 120b1-5) are symmetrically formed based on the longitudinal axis perpendicular to the central axis of the main body part 110-5.

Referring to FIG. 8c, the ultrasonic flow measurement device according to the sixth embodiment is a reflection type, which includes two pairs of ultrasonic sensors (200a1-5, 200b1-5), (200a2-5, 200b2-5), which are respectively set At two pairs of fixing parts (120a1-5, 120b1-5), (120a2-5, 120b2-5) formed on both sides of the main body part 110-5 and spaced apart from the flow path through which the fluid flows by a predetermined distance L1 . Here, the diameter of the ultrasonic sensor and the diameter of the fixing portion may be designed to be different from each other.

Each pair of fixing parts (120a1-5, 120b1-5), (120a2-5, 120b2-5) is formed on both sides of the main body part 110-5, and each pair is inclined at a certain angle, so that each pair of fixing parts (120a1-5) , 120b1-5), (120a2-5, 120b2-5) central axes are not positioned on the same line, but are positioned parallel to each other at a predetermined distance. Two pairs of fixing portions formed at respective positions with respect to the central axis of the main body portion may be formed to cross each other.

Referring to FIG. 8d, the ultrasonic flow measurement device according to the sixth embodiment is a reflection type, including two pairs of ultrasonic sensors (200a1-5, 200b2-5), (200a2-5, 200b1-5), which are respectively provided At two pairs of fixing portions (120a1-5, 120b2-5), (120a2-5, 120b1-5) formed on both sides of the main body portion 110-5 and spaced apart from the flow path through which the fluid flows by a predetermined distance L1 . Here, the diameter of the ultrasonic sensor and the diameter of the fixing portion may be designed to be different from each other.

A pair of fixing parts (120a1-5, 120b2-5) are formed on one side of the main body part (110-5), and the other pair of fixing parts (120a2-5, 120b1-5) are formed on the other side of the main body part 110-5 , and the two pairs of fixing parts (120a1-5, 120b2-5) and (120a2-5, 120b1-5) are symmetrically formed based on the longitudinal axis perpendicular to the central axis of the main body part 110-5.

The above has been described with reference to the preferred embodiments of the present invention, but it should be understood that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the present invention, as set forth in the following claims .

10: Cable 100: Measuring tube 100a: connection hole 100b: Fasteners 110: Main body 110-1: Main body 110-2: Main body 110-3: Main body 110-4: Main body 110-5: Main body 120: Fixed part 120a: Fixed part 120a-1: Fixed part 120a-2: Fixed part 120a-3: Fixed part 120a1-4: Fixed part 120a2-4: Fixed part 120a1-5: Fixed part 120a2-5: Fixed part 120b: Fixed part 120b-1: Fixed part 120b-2: Fixed part 120b-3: Fixed part 120b1-4: Fixed part 120b2-4: Fixed part 120b1-5: Fixed part 120b2-5: Fixed part 130: Coupling part 140: Cover 200: Ultrasonic sensor 200a: Ultrasonic sensor 200a-1: Ultrasonic sensor 200a-2: Ultrasonic Sensors 200a-3: Ultrasonic Sensors 200a1-4: Ultrasonic sensors 200a2-4: Ultrasonic sensor 200a1-5: Ultrasonic sensors 200a2-5: Ultrasonic sensor 200b: Ultrasonic sensor 200b-1: Ultrasonic sensor 200b-2: Ultrasonic sensor 200b-3: Ultrasonic sensor 200b-4: Ultrasonic sensor 200b1-4: Ultrasonic Sensors 200b2-4: Ultrasonic sensor 200b1-5: Ultrasonic sensor 200b2-5: Ultrasonic sensor 300: Control Department 300a: connection hole 300b: Fasteners 310: Shell 320: Controller 400: connecting pipe L1: predetermined distance L2: predetermined distance A: The first area B: The second area G: Scheduled gap θ: predetermined angle

[Figs. 1a to 1f] are views showing an ultrasonic flow measurement device according to an embodiment of the present invention.

[ FIGS. 2 a and 2 b ] are views for explaining the connection relationship between the ultrasonic sensor and the control section.

[ FIGS. 3 a and 3 b ] are cross-sectional views showing the structure of the ultrasonic flow measurement device according to the first embodiment.

[Figs. 4a to 4f] are cross-sectional views showing the structure of the ultrasonic flow measurement device according to the second embodiment.

[ Fig. 5 ] is a cross-sectional view showing the structure of an ultrasonic flow measurement device according to a third embodiment.

[ FIGS. 6 a and 6 b ] are cross-sectional views showing the structure of an ultrasonic flow measurement device according to a fourth embodiment.

[ FIGS. 7 a to 7 d ] are cross-sectional views showing the structure of the ultrasonic flow measurement device according to the fifth embodiment.

[ FIGS. 8 a to 8 d ] are cross-sectional views showing the structure of the ultrasonic flow measurement device according to the sixth embodiment.

100: Measuring tube

200: Ultrasonic sensor

200a: Ultrasonic sensor

200b: Ultrasonic sensor

300: Control Department

Claims (12)

An ultrasonic flow measurement device, comprising: A measuring tube including a main body portion having a flow path formed in a cylindrical shape inside thereof, through which fluid flows, and a pair of fixing portions formed on at least one side of the main body portion and connected to the flow path; and a pair of ultrasonic sensors, respectively arranged on the pair of fixed parts, and separated from the flow path by a predetermined distance, wherein, the pair of fixing parts is divided into a first area and a second area from one end to the position where they meet the flow path, and the diameter of the second area is designed to be smaller than the diameter of the first area, The pair of ultrasonic sensors are arranged on the first area of the pair of fixing parts, the ends that generate ultrasonic signals are arranged to be separated from the second area by a predetermined distance, and The end where the ultrasonic signal is generated is larger than the diameter of the second region. The ultrasonic flow measurement device according to claim 1, wherein the pair of fixing portions are formed on one side of the main body portion and are inclined at the same angle with respect to a central axis of the main body portion, and the central axes are formed to intersect each other. The ultrasonic flow measurement device according to claim 1, wherein the pair of fixing parts are provided on both sides of the main body part and are inclined at the same angle with respect to the central axis of the main body part, and the central axes are spaced apart and formed in parallel. The ultrasonic flow measurement device according to claim 1, wherein the pair of fixing portions are formed on both sides of the main body portion and are inclined at the same angle with respect to the central axis of the main body portion, and the central axes are positioned on the same line. The ultrasonic flow measuring device according to claim 2 or 3, wherein the pair of fixing parts are arranged to be separated by a predetermined distance, and ultrasonic signals generated from an ultrasonic sensor are reflected on the inner surface of the main body part At least once and transmit to another ultrasonic sensor. An ultrasonic flow measurement device, comprising: A measuring tube including a main body portion having a flow path formed in a cylindrical shape inside thereof, through which fluid flows, and a pair of fixing portions formed on at least one side of the main body portion and connected to the flow path; a pair of ultrasonic sensors, respectively disposed on the pair of fixed parts and spaced from the flow path by a predetermined distance; a control unit that receives the ultrasonic signals transmitted and received from the pair of ultrasonic sensors, and uses the transit time difference of the ultrasonic signals to measure the flow velocity and flow of the fluid; and a connecting pipe, connecting the measuring pipe and the control part, and including a cable for electrically connecting the pair of ultrasonic sensors and the control part arranged in the measuring pipe, wherein, a connection hole is formed on one side of the fixing portion of the measuring tube, and a cable connected to the ultrasonic sensor is inserted through the connection hole, A connection hole is formed on one side of the housing of the control part, and a cable connected to the controller is inserted through the connection hole, The connecting pipe includes a plurality of passages through its interior, The fasteners formed on one side of the measuring tube and the fasteners formed on one side of the control portion are screw-coupled by the two passages of the connecting tube, The connecting hole of the measuring tube and the connecting hole of the control part are connected by screw coupling through another channel of the connecting tube, The pair of fixing parts is divided into a first region and a second region from one end to a position where they meet the flow path, and the diameter of the second region is designed to be smaller than the diameter of the first region, The pair of ultrasonic sensors are arranged on the first area of the pair of fixing parts, and the ends that generate ultrasonic signals are arranged to be separated from the second area by a predetermined distance. An ultrasonic flow measurement device, comprising: The measuring tube includes a main body portion and two pairs of fixing portions, the main body portion having a flow path formed in a cylindrical shape in the inside thereof, and the fluid flows through the flow path, the two pairs of fixing portions are formed on both sides of the main body portion and are connected to the flow path; and two pairs of ultrasonic sensors, respectively disposed on the two pairs of fixed parts, and separated from the flow path by a predetermined distance; Wherein, the two pairs of fixing parts are divided into a first area and a second area from one end to the position where they meet the flow path, and the diameter of the second area is designed to be smaller than the diameter of the first area, The two pairs of ultrasonic sensors are arranged on the first area of the two pairs of fixing parts, and the ends that generate ultrasonic signals are arranged to be separated from the second area by a predetermined distance, and The end where the ultrasonic signal is generated is larger than the diameter of the second region. The ultrasonic flow measurement device according to claim 7, wherein the two pairs of fixing parts include a pair of fixing parts formed on one side of the main body part and another pair formed on the other side of the main body part Fixed part. The ultrasonic flow measurement device according to claim 7, wherein the two pairs of fixing parts include a pair of fixing parts formed on both sides of the main body part and another pair of fixing parts formed on both sides of the main body part department. The ultrasonic flow measurement device according to claim 9, wherein the central axis of each pair of the two pairs of fixing parts is inclined at a certain angle with the central axis of the main body part as a reference, and the two pairs of fixing parts are formed so that each The central axes intersect. The ultrasonic flow measurement device according to claim 8 or 9, wherein the two pairs of fixing parts are arranged to be separated by a predetermined distance, and the ultrasonic signal generated from an ultrasonic sensor is on the inner surface of the main body part Reflected at least once and transmitted to another ultrasonic sensor. An ultrasonic flow measurement device, comprising: A measuring tube including a main body portion having a flow path formed in a cylindrical shape inside thereof, through which fluid flows, and a pair of fixing portions formed on at least one side of the main body portion and connected to the flow path; a pair of ultrasonic sensors, respectively disposed on the pair of fixed parts and spaced apart from the flow path by a predetermined distance; a control part, receiving the ultrasonic signals transmitted and received from the pair of ultrasonic sensors, and measuring the flow velocity and flow rate of the fluid by using the transit time difference of the ultrasonic signals; and a connecting pipe, connecting the measuring pipe and the control part, and including a cable for electrically connecting the pair of ultrasonic sensors and the control part arranged in the measuring pipe, wherein a connecting hole is formed on one side of the fixing portion of the measuring tube, and a cable connected to the ultrasonic sensor is inserted through the connecting hole, A connection hole is formed on one side of the casing of the control part, and a cable connected to the controller is inserted through the connection hole, The connecting pipe includes a plurality of passages through its interior, The fasteners formed on one side of the measuring tube and the fasteners formed on one side of the control portion are screw-coupled by the two passages of the connecting tube, The connecting hole of the measuring tube and the connecting hole of the control part are connected by screw coupling through another channel of the connecting tube, The pair of fixing parts is divided into a first area and a second area from one end to a position where they meet the flow path, and the diameter of the second area is designed to be smaller than the diameter of the first area, The pair of ultrasonic sensors are arranged on the first area of the pair of fixing parts, and the ends that generate ultrasonic signals are arranged to be separated from the second area by a predetermined distance.

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