Ultrasonic flowmeter with freely-steerable joint connecting structure

Abstract

The present invention relates to an ultrasonic flow meter having a freely steerable joint connection structure, and more particularly, to an ultrasonic flow meter in which a main body part of an inflow part and an outflow part to which an ultrasonic transmitting / receiving sensor is mounted can be rotated by 360 degrees to change directions, and the main body part and the internal and external pipes of the inflow / outflow part can be conveniently loosened, separated, assembled and connected. According to one embodiment of the present invention, an ultrasonic flow meter having a freely steerable joint connection structure, the ultrasonic flow meter comprising: a first main body which is positioned on the side in the direction of an inflow part and in which a first ultrasonic transmission / reception sensor is mounted; a second main body located on the outflow part direction side and having a second ultrasonic transmission / reception sensor mounted therein; a nut joint central part structure which is detachably or separately connected to the central outer pipes of the first and second main bodies, so that the first and second main bodies can rotate in the radial direction, and free direction conversion is realized; a nut joint inflow part structure which is detachably or detachably connected to an inflow part external pipe formed directly above the first main body; and a nut joint outflow part structure which is detachably or detachably connected to an outflow part external pipe formed directly above the second main body.

Description

Technical Field

[0001] This invention relates to an ultrasonic flow meter with a freely rotatable connector connection structure, and more specifically, to an ultrasonic flow meter in which the inflow and outflow main body, which are equipped with ultrasonic transceiver sensors, can rotate 360 ​​degrees to achieve direction reversal, and the main body and the inflow / outflow inner and outer pipes and other components can be easily detached and assembled. Background Technology

[0002] Unless otherwise stated in this specification, the content described in this section does not constitute prior art as claimed in this application, and should not be regarded as prior art simply because it is included in this section.

[0003] Typically, an ultrasonic flow meter is a measuring instrument based on the following principles: Figure 1 a As shown, an ultrasonic sensor installed on one side sends an ultrasonic signal to an ultrasonic sensor installed on the opposite side. The flow velocity inside the pipe is measured by transmitting and receiving ultrasonic signals in the fluid. The flow velocity is then multiplied by the cross-sectional area of ​​the pipe, and the flow velocity distribution is further corrected and compensated by an algorithm to finally calculate the flow rate.

[0004] In addition, all traditional fluoropolymer ultrasonic flow meters adopt the following... Figure 1 b The product is manufactured and supplied in the following manner: First, multiple directions are set, and then the main body (body) is fixed to the surrounding components by fluoropolymer welding.

[0005] In other words, such as Figure 2 As shown in photo c, the fluoropolymer series ultrasonic flow meter products manufactured using the aforementioned traditional method have their main body (body) and surrounding components manufactured by welding.

[0006] The main reason for using welding in manufacturing is that most of the supplied fluoropolymer ultrasonic flow meters are used in medical applications or in semiconductor manufacturing processes involving ultra-high purity and high-purity chemical solutions. Furthermore, another reason for using welding is that during the signal transmission and reception process of the ultrasonic sensor, it is necessary to ensure that the signal propagates parallel to the central axis within the pipe section, which simultaneously presents technical challenges related to precision measurement.

[0007] However, the traditional method of manufacturing ultrasonic flow meters, which uses welding for fixing, makes it impossible to adjust the flow meter at multiple angles during operation or equipment installation, inevitably complicating the pipeline connection.

[0008] In addition, when measuring with an ultrasonic flowmeter, if damage or aging such as cracks occur inside the pipeline due to high-temperature and high-pressure fluids (solutions), or if a malfunction is caused by defective components, not only the pipeline needs to be replaced, but often the entire ultrasonic flowmeter must be replaced, resulting in a high-cost economic burden.

[0009] Regarding this point, Korean Registered Patent Gazette No. 10-179768 (Publication Date: July 19, 2017) discloses an ultrasonic flowmeter that can efficiently and stably transmit and receive ultrasonic beams and obtain high measurement accuracy with a high measurement frequency. However, as shown in Figure 1 of this gazette, its inner pipe section (110), inlet pipe (120), and outlet pipe (130) made of fluororesin are not connected by fittings but are integrally formed into a communicating structure similar to the shape of " ". Therefore, the inlet pipe and outlet pipe shown in this gazette cannot be adjusted in multiple angular directions as needed, and the aforementioned inherent problems still exist.

[0010] In addition, although this prior art gazette shows the combined states of inner pipe sections (210, 310, 410), inlet pipes (220, 320, 420), and outlet pipes (230, 330, 430) with various angular configurations in Figure 5 , Figure 6, and Figure 7, these are also integrally formed structures rather than joint connections, so they cannot be adjusted in multiple angular directions as needed during the operation. Thus, the problems existing in the traditional technology have not been fundamentally solved.

[0011] [Prior Art Documents] [Patent Documents] (Patent Document 1) Korean Registered Patent Gazette No. 10-179768 (Publication Date: July 19, 2017) Summary of the Invention Technical Problem Therefore, as a technology that further improves relative to the prior art, the purpose of the present invention is to provide an ultrasonic flowmeter with a joint connection structure. By modularizing the first and second bodies of the ultrasonic flowmeter, as well as the inlet and outlet parts, and using components such as independent structures to make these main components have a joint connection structure, the present invention can achieve free and effective direction conversion.

[0012] Another objective of this invention is to provide an ultrasonic flow meter with a freely steerable connector connection structure. Even if damage or aging occurs inside the pipe due to high-temperature and high-pressure fluid (solution) during measurement and use, or if a component malfunctions, it is not necessary to replace the entire ultrasonic flow meter; only the corresponding faulty component needs to be replaced, thereby effectively controlling costs and improving economic efficiency.

[0013] Furthermore, the aforementioned technical issues are not limited to those described above. It should be understood that other technical issues can be derived based on the following explanation.

[0014] Technical solutions According to an embodiment of the present invention, an ultrasonic flow meter having a freely rotatable connector connection structure is characterized in that the ultrasonic flow meter comprises: a first body located on the inflow direction side, wherein a first ultrasonic transceiver sensor is installed inside; a second body located on the outflow direction side, wherein a second ultrasonic transceiver sensor is installed inside; a nut connector central structure, which is detachably or separably connected to the central outer tube of the first body and the second body, thereby allowing the first body and the second body to rotate radially and achieve free direction conversion; a nut connector inflow structure, which is detachably or separably connected to the inflow outer tube formed directly above the first body; and a nut connector outflow structure, which is detachably or separably connected to the outflow outer tube formed directly above the second body.

[0015] According to a preferred embodiment of the present invention, a central outer tube is integrally formed on the right side of the first body, and a central inner tube is integrally formed inside the outer tube; an inflow outer tube is integrally formed directly above the first body, and an inflow inner tube is integrally formed inside the inflow inner tube; a central outer tube is integrally formed on the left side of the second body, and a central inner tube is integrally formed inside the outer tube; an outflow outer tube is integrally formed directly above the second body, and an outflow inner tube is integrally formed inside the outflow inner tube.

[0016] According to a preferred embodiment of the present invention, the nut joint central structure is characterized in that a pair of central nuts are formed on the left and right sides of the central structure based on the vertical center line, and an internal tube with a hollow portion of the same diameter along the axial direction is formed in the center of each central nut. A pair of connecting tubes are inserted into the internal tubes of the structure to form a pair of connecting tubes that can be tightly connected with the opposite central internal tubes and the internal tubes of the structure.

[0017] According to a preferred embodiment of the present invention, the outer peripheral surfaces of the pair of central nuts are formed with a plurality of protrusions.

[0018] According to a preferred embodiment of the present invention, the nut connector inlet structure includes an inlet nut and an inlet pipe, wherein one end of the inlet pipe is formed with a larger diameter than the other end and is slidably inserted along the central through portion of the inlet nut, such that the inclined portion of the inlet pipe engages with the stepped portion of the central through portion to achieve a connection; the nut connector outlet structure includes an outlet nut and an outlet pipe, wherein one end of the outlet pipe is formed with a larger diameter than the other end and is slidably inserted along the central through portion of the outlet nut, such that the inclined portion of the outlet pipe engages with the stepped portion of the central through portion to achieve a connection.

[0019] According to a preferred embodiment of the present invention, the outer peripheral surfaces of the inflow nut and the outflow nut are formed with a plurality of protrusions.

[0020] According to a preferred embodiment of the present invention, the outer peripheral surfaces of the central outer tube and the inflow outer tube of the first main body are formed in a spiral shape, so as to be threadedly engaged with the central nut and the inflow nut respectively; the outer peripheral surfaces of the central outer tube and the outflow outer tube of the second main body are formed in a spiral shape, so as to be threadedly engaged with the central nut and the outflow nut respectively.

[0021] According to a preferred embodiment of the present invention, the pair of central nuts, while being threaded into the central outer tubes of the first and second main bodies on the left and right sides, simultaneously advance into the pair of connecting tubes formed inside them, thereby tightly connecting to the central inner tubes formed inside the central outer tubes.

[0022] According to a preferred embodiment of the present invention, the inflow nut and the outflow nut, while being threadedly engaged with the inflow outer tube of the first body and the outflow outer tube of the second body respectively, are simultaneously inserted into the respective connecting tubes formed inside them, thereby tightly connecting to the respective inflow inner tubes and outflow inner tubes formed inside the inflow outer tube of the first body and the outflow outer tube of the second body.

[0023] According to a preferred embodiment of the present invention, the connecting pipe is characterized in that a sleeve is formed to wrap the central inner pipe, the inflow inner pipe and the outflow inner pipe, and a cylindrical portion is integrally formed on the inner side of the sleeve.

[0024] According to a preferred embodiment of the present invention, the first body and the second body are respectively formed with a housing, the housing having an internal space for mounting an ultrasonic sensor, a first body cable terminal portion and a second body cable terminal portion are respectively formed on one side of the housing, and an openable and closable cover is respectively formed at the rear of the housing.

[0025] Invention Effects According to the present invention, by modularizing the first and second main bodies of the ultrasonic flow meter, as well as the inlet and outlet, and by using independent structural components to enable these main components to have joint connection structures, the defects of existing fixing methods that use welding or integral molding, which prevent directional conversion, are overcome. This enables 360-degree free directional conversion in the radial direction. As a result, the direction can be adjusted as needed at any time during the working environment or installation of the ultrasonic flow meter, and complex pipe connections can be avoided.

[0026] According to the present invention, even if damage or aging occurs inside the pipe due to high temperature and high pressure fluid (solution) during the measurement of ultrasonic flow meter, or if component failure occurs, it is not necessary to replace the entire ultrasonic flow meter; only the relevant faulty component needs to be replaced, thereby minimizing the cost and economic burden.

[0027] The effects of the present invention are not limited to those described above, but should be understood to include all effects that can be inferred from the inventive structure described in the detailed description or claims of the present invention. Attached Figure Description

[0028] Figure 1 a This is a schematic diagram illustrating the working principle of a typical ultrasonic flow meter.

[0029] Figure 1 b This is a schematic diagram showing various fixed connection methods for existing ultrasonic flow meters.

[0030] Figure 1 c This is a 3D model of an existing ultrasonic flow meter product.

[0031] Figure 2 This is a three-dimensional view of an ultrasonic flowmeter with a freely steerable connector connection structure according to an embodiment of the present invention.

[0032] Figure 3 This is an overall sectional view of an ultrasonic flowmeter with a freely steerable connector connection structure according to an embodiment of the present invention.

[0033] Figure 4 This is a three-dimensional disassembled view of an ultrasonic flowmeter with a freely steerable connector connection structure according to an embodiment of the present invention.

[0034] Figure 5 This is an overall disassembled anatomical view of an ultrasonic flowmeter with a freely steerable connector connection structure according to an embodiment of the present invention. Detailed Implementation

[0035] The ultrasonic flow meter with a freely steerable connector connection structure of the present invention will be specifically described below with reference to the accompanying drawings and preferred embodiments.

[0036] For reference, in the following figures, for ease of explanation and clarity, some components may be omitted or shown schematically, and the dimensions of each component may not necessarily reflect its actual dimensions. Furthermore, throughout this specification, the same reference numerals denote the same components, and in individual figures, repeated reference numerals for the same components may be omitted.

[0037] Reference Figure 2 to Figure 5 An embodiment of the present invention will be described. The ultrasonic flow meter (1000) of the present invention, characterized by a freely rotatable connector connection structure, comprises: a first body (100) located on the inflow direction side, wherein a first ultrasonic transceiver sensor is installed internally; a second body (200) located on the outflow direction side, wherein a second ultrasonic transceiver sensor is installed internally; and a nut connector central structure (300) which is detachably or separably connected to the first body (100) and the second body (200). The central outer tubes (120, 220) are connected by a connector, so that the first body (100) and the second body (200) can rotate radially and achieve free direction conversion; the nut connector inlet structure (400) is connected to the inlet outer tube (160) formed directly above the first body (100) in a detachable or separable manner; the nut connector outlet structure (500) is connected to the outlet outer tube (260) formed directly above the second body (200) in a detachable or separable manner.

[0038] More specifically, refer to the attached diagram. Figure 2 A perspective view of the ultrasonic flow meter (1000) of the present invention, which has a freely rotatable connector connection structure, is shown, capable of rotating 360 degrees in the direction of the arrow. Figure 3 An overall sectional view of the ultrasonic flowmeter (1000) of the present invention, which has a freely rotatable connector connection structure, is shown, and can be rotated 360 degrees in the direction of the arrow. Figure 4 An overall disassembled perspective view of the main components of the ultrasonic flow meter (1000) with a freely steerable connector connection structure of the present invention is shown. Figure 5 An overall disassembled anatomical view of the detailed components of the ultrasonic flowmeter (1000) of the present invention, which has a freely steerable connector connection structure, is shown.

[0039] like Figure 2 and Figure 3As shown, the ultrasonic flow meter (1000) of the present invention with a freely steerable connector connection structure basically includes a first body (100), a second body (200), a nut connector central part structure (300), a nut connector inflow part structure (400), and a nut connector outflow part structure (500).

[0040] First, from the overall working process of the ultrasonic flowmeter (1000) with a freely steerable connector connection structure of the present invention, as follows: Figure 2 and Figure 5 As shown, the chemical solution flows in through the inlet pipe (420) of the nut connector inlet structure (400), passes through the first body (100) and the nut connector central structure (300), and then flows out through the inlet pipe (420) of the second body (200) and the nut connector inlet structure (400). At this time, the flow rate of the chemical liquid can be calculated by signal transmission between the first ultrasonic transceiver sensor (not shown) installed in the housing (110) of the first body (100) and the second ultrasonic transceiver sensor (not shown) installed in the housing (210) of the second body (200).

[0041] Below, refer to Figure 5 The main components of this invention will be described in detail below. First, the first body (100) is as follows: Figure 5 As shown on the left, the enclosure includes a housing (110) with an internal space for mounting an ultrasonic transceiver sensor, and a central outer tube (120) integrally formed in the form of a straight tube protruding to the right from the housing (110). A central inner tube (150) is integrally formed inside the central outer tube (120), and the protruding length of the central inner tube (150) is shorter than that of the central outer tube (120), i.e., less protruding, allowing a small gap to be formed between the central outer tube (120) and the central inner tube (150). This small gap allows the sleeve (332) of the connecting tube (330) to extend forward for a tight engagement. Simultaneously, the left end face of the cylindrical portion (333) of the connecting tube (330) tightly engages with the right end face of the central inner tube (150) to effectively prevent fluid leakage.

[0042] On the other hand, when the central nut (310) on the central structure (300) of the nut connector is loosened, the body of the first body (100) can rotate 360 ​​degrees radially around the internal central axis of the central straight tube (120, 150), so that the direction of the first body (100) can be freely changed as needed in the working environment or when an ultrasonic flow meter is installed.

[0043] Furthermore, an outer inlet pipe (160) and an inner inlet pipe (170) are integrally formed on the top of the outer shell (110) of the first main body (100). The inner inlet pipe (170) protrudes less than the outer inlet pipe (160), and a small gap can be formed between the outer inlet pipe (160) and the inner inlet pipe (170). This is to allow the sleeve (432) of the connecting pipe (430) to advance forward to the small gap between the outer inlet pipe (160) and the inner inlet pipe (170) for a tight fit. Simultaneously, the lower end face of the cylindrical portion (433) of the connecting pipe (430) is tightly joined to the upper end face of the inner inlet pipe (170), thereby effectively preventing fluid leakage.

[0044] On the other hand, the first main body (100) has a cover (140) at the end of the outer casing (110), which is fitted or threaded, allowing the outer casing (110) to be opened and closed when the ultrasonic sensor is installed. Furthermore, the internal space of the outer casing (110) and the central internal tube (150) are mutually sealed because one end of the central internal tube (150) is formed as a wall. This prevents fluid from flowing into the inner space of the outer casing (110) where the ultrasonic sensor is installed. Additionally, a cable terminal (130) is provided on one side of the outer casing (110) for connecting a cable terminal, thereby controlling the transmission and reception of signals by the ultrasonic sensor and measuring the flow rate.

[0045] Next, the second body (200) has the same structure as the first body (100). That is, as... Figure 5 As shown, the second body (200) includes a shell (210) with an internal space, a central outer tube (220) protruding to the left and a central inner tube (250) integrally formed therein. In this case, the central inner tube (250) can be formed to protrude less than the central outer tube (220), and an annular small gap is formed between the central outer tube (220) and the central inner tube (250). This small gap allows the sleeve (332) of another connecting tube (330) to be pushed forward and achieve a tight connection, thereby effectively preventing fluid leakage.

[0046] On the other hand, similar to the first body (100), when the central nut (310) of the central structure (300) of the nut connector of the present invention is loosened, the body of the second body (200) can rotate radially 360 degrees around the internal central axis of the central straight tube (220, 250), so that the direction of the second body (200) can be freely changed as needed in the working environment or when an ultrasonic flow meter is installed.

[0047] In addition, such as Figure 5As shown, the second body (200) is identical to the first body (100), with an outer outlet tube (260) and an inner outlet tube (270) integrally formed directly below the outer casing (210). The inner outlet tube (270) protrudes less than the outer outlet tube (260), and a small gap can be formed between the outer outlet tube (260) and the inner outlet tube (270). This is to allow the sleeve (532) of the connecting tube (530) to advance into the small gap between the outer outlet tube (260) and the inner outlet tube (270) and achieve a tight connection. Simultaneously, the lower end face of the cylindrical portion (533) of the connecting tube (530) is tightly joined to the upper end face of the inner outlet tube (270), thereby effectively preventing fluid leakage.

[0048] On the other hand, the second main body (200) also has a cover (240) at the end of the housing (210). This cover (140) is fitted or threaded, allowing the housing (210) to be opened and closed when the ultrasonic sensor is installed. Furthermore, the internal space of the housing (210) and the central internal tube (250) are mutually sealed because one end of the central internal tube (250) is formed as a wall. This prevents fluid from flowing into the internal space of the housing (210) where the ultrasonic sensor is installed. Additionally, a cable terminal (230) is provided on one side of the housing (210) for connecting a cable terminal, thereby controlling the transmission and reception of signals by the ultrasonic sensor and measuring the flow rate.

[0049] Furthermore, as a core component of the present invention, the central structure (300) of the nut connector is based on a vertical centerline, and a pair of central nuts (310) are formed on its left and right sides. An internal tube (320) is formed in the center of each central nut (310). The internal tube (320) has a hollow portion with a uniform diameter along the axial direction. A pair of connecting tubes (330) are inserted into the internal tube (320) to form a connection. The pair of connecting tubes (330) can be tightly connected with the central internal tubes (150, 250) and the internal tube (320) that are opposite each other. At this time, the cylindrical portion (333) end of the pair of connecting tubes (330) is inserted into the internal tube (320) and tightly engaged.

[0050] Furthermore, the outer peripheral surfaces of the pair of central nuts (310) are formed with multiple protrusions, allowing the operator to easily switch the central nuts (310) between a loosened (unlocked) state and a tightened (secured) state. In this invention, as... Figure 5 As shown, the protrusion is formed in the shape of a gear, but other similar shapes may also be included as long as it can be easily switched between the loosening (unlocking) and tightening (fastening) states.

[0051] Furthermore, the central nut (310) can freely slide and rotate around the outer circumference of the internal tube (320) of the structure, thereby realizing the function of loosening or tightening the joint. At this time, in order to prevent the central nut (310) from falling outward, it is preferable to design the outer diameter of the internal tube (320) of the structure to be larger than the inner diameter, specifically it can be formed into an inclined flared shape, or a stepped structure can be provided.

[0052] Next, we will refer to Figure 5 The following description details the main components of the present invention: the nut connector inlet structure (400) and the nut connector outlet structure (500). First, the nut connector inlet structure (400) includes an inlet nut (410) and an inlet pipe (420), wherein one end of the inlet pipe (420) is formed to have a larger diameter than the other end, and is slidably inserted along the central through portion (415) of the inlet nut (410), so that the inclined portion of the inlet pipe (420) can engage with the stepped portion of the central through portion (415) to achieve a connection.

[0053] In addition, the nut connector outlet structure (500) also includes an outlet nut (510) and an outlet tube (520) in the same manner, wherein one end of the outlet tube (520) is formed to have a larger diameter than the other end, and is slidably inserted along the central through portion (515) of the outlet nut (510), so that the inclined portion of the outlet tube (520) can be engaged with the stepped portion of the central through portion (515) to achieve a connection.

[0054] At this time, as Figure 5 As shown, the outer peripheral surfaces of the inflow nut (410) and the outflow nut (510) of the present invention are formed with a plurality of protrusions, so that the operator can easily switch the central nut (310) between the loose (unloose) state and the tight (tight) state.

[0055] And, as Figure 4 and Figure 5 As shown, the outer peripheral surfaces of the central outer tube (120) and the inflow outer tube (160) of the first body (100) of the present invention are formed with a spiral shape and are threadedly connected to the central nut (310) and the inflow nut (410) respectively. The outer peripheral surfaces of the central outer tube (220) and the outflow outer tube (260) of the second body (200) are also formed with a spiral shape and are threadedly connected to the central nut (310) and the outflow nut (510) respectively.

[0056] Among them, reference Figure 3 to Figure 5The pair of central nuts (310) of the present invention are threadedly engaged with the central outer tubes (120, 220) of the first body (100) and the second body (200) on the left and right sides, and simultaneously advance into the pair of connecting tubes (330) formed inside them, thereby tightly connecting to the central inner tubes (150, 250) formed inside the central outer tubes (120, 220).

[0057] Furthermore, while the inflow nut (410) and outflow nut (510) of the present invention are threadedly connected to the inflow outer tube (160) of the first body (100) and the outflow outer tube (260) of the second body (200), respectively, the connecting tubes (430, 530) formed inside them advance synchronously, thereby tightly connecting to the inflow inner tubes (170) and outflow inner tubes (270) formed inside the inflow outer tube (160) of the first body (100) and the outflow outer tube (260) of the second body (200).

[0058] And, as Figure 3 to Figure 5 As shown, all four connecting pipes (330, 331, 430, 530) of the present invention are made of the same shape and structure, and are formed with sleeves (332) for wrapping the central inner pipe (150, 250), the inflow inner pipe (170), and the outflow inner pipe (270). The inner side of the sleeve (332) is integrally formed with a cylindrical portion (333). With this configuration, the connecting pipes (330, 331, 430, 530) can be tightly connected and combined with the central inner pipe (150, 250), the inflow inner pipe (170), and the outflow inner pipe (270), thereby effectively maintaining airtightness.

[0059] As described above, the ultrasonic flow meter (1000) of the present invention, which has a freely rotatable connector connection structure, is manufactured in a manner that, as described above, eliminates the method of integrally fixing the constituent components by welding or other methods in the prior art, and instead adopts a connector connection method for manufacturing. By applying this connector connection method to the ultrasonic flow meter (1000), multi-angle adjustment at any desired angle can be achieved during the on-site installation of the ultrasonic flow meter, which was previously impossible.

[0060] That is, such as Figure 2 to Figure 5As shown, when the central nut (310) of the central structure (300) of the nut connector is loosened, the connection between the first body (100) and the second body (200) will be released, allowing for 360-degree free rotation in the radial direction. After the operator tightens the central nut (310) again at the desired position, the first body (100) and the second body (200) will be fixedly connected again. Through this method, the ultrasonic flowmeter of the present invention can be freely rotated to any desired angle for use in the working environment or during equipment installation, thereby effectively avoiding complex pipe connections and improving the work efficiency of the operator.

[0061] Furthermore, according to the present invention, even if damage or aging occurs inside the pipe (e.g., inlet pipe or outlet pipe) due to high temperature and high pressure fluid (solution) during the measurement and use of the ultrasonic flow meter (1000), or if a component malfunctions, it is not necessary to replace the entire ultrasonic flow meter as in the prior art. Only the corresponding faulty component needs to be replaced, which can minimize costs and reduce economic burden.

[0062] The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. However, the embodiments and structures shown in the drawings are only one of the best implementations of the present invention and do not represent all the technical ideas of the present invention. It should be understood that at the time of filing this application, there may be various equivalent solutions and modified implementations that can replace them. Therefore, it should be understood that the above embodiments are exemplary in all respects and not restrictive provisions. The scope of the present invention should be defined by the appended claims, and not limited to the detailed description above; any changes or modifications derived from the meaning, scope and equivalent concepts of the claims should be interpreted as being included within the protection scope of the present invention.

[0063] [Explanation of reference numerals in the attached figures] 100: First main body; 110: Outer shell; 120: Central outer tube; 130: Cable terminal section; 140: Cover; 150: Central inner tube; 160: Inlet outer tube; 170: Inlet inner tube; 200: Second main body; 210: Outer shell; 220: Central outer tube; 230: Cable terminal section; 240: Cover; 250: Central inner tube; 260: Outlet outer tube; 270: Outlet inner tube; 300: Nut connector central structure; 310: Central nut; 320: Structure inner tube ; 330: Connecting pipe; 332: Sleeve; 333: Cylindrical section; 400: Nut connector inlet structure; 410: Inlet nut; 415: Central through section; 420: Inlet pipe; 430: Connecting pipe; 432: Sleeve; 433: Cylindrical section; 500: Nut connector outlet structure; 510: Outlet nut; 515: Central through section; 520: Outlet pipe; 530: Connecting pipe; 532: Sleeve; 533: Cylindrical section; 1000: Ultrasonic flow meter with a freely steerable connector connection structure.

Claims

1. An ultrasonic flow meter with a freely rotatable connector connection structure, characterized in that, The ultrasonic flow meter includes: The first main body is located on the inflow side and has a first ultrasonic transceiver sensor installed inside it. The second main body is located on the outflow side and has a second ultrasonic transceiver sensor installed inside it. The central structure of the nut connector is connected to the central outer tube of the first and second bodies in a detachable or separable manner, thereby allowing the first and second bodies to rotate radially and achieve free directional conversion; The nut connector inlet structure is connected to the inlet outer pipe formed directly above the first main body in a detachable or separable manner. The nut connector outlet structure is connected to the outlet outer tube formed directly above the second main body in a detachable or separable manner.

2. The ultrasonic flow meter with a freely steerable connector connection structure according to claim 1, characterized in that, On the right side of the first main body, a central outer tube is integrally formed, and a central inner tube is integrally formed inside it. Directly above the first main body, an inflow outer tube is integrally formed, and an inflow inner tube is integrally formed inside it. On the left side of the second main body, a central outer tube is integrally formed, and a central inner tube is integrally formed inside the outer tube. Directly above the second main body, an outflow outer tube is integrally formed, and an outflow inner tube is integrally formed inside the outer tube.

3. The ultrasonic flow meter with a freely steerable connector connection structure according to claim 1, characterized in that, The central structure of the nut joint is based on the vertical center line, and a pair of central nuts are formed on its left and right sides. An internal tube of the structure is formed in the center of each central nut. The internal tube of the structure has a hollow part with the same diameter along the axial direction. A pair of connecting tubes are inserted into the internal tube of the structure to form a pair of connecting tubes that can be tightly connected with the opposite central internal tube and the internal tube of the structure.

4. The ultrasonic flow meter with a freely steerable connector connection structure according to claim 3, characterized in that, The outer circumferential surfaces of the pair of central nuts have multiple protrusions.

5. The ultrasonic flow meter with a freely steerable connector connection structure according to claim 1, characterized in that, The nut connector inlet structure includes an inlet nut and an inlet tube, wherein one end of the inlet tube is formed to have a larger diameter than the other end, and is slidably inserted along the central through portion of the inlet nut, such that the inclined portion of the inlet tube engages with the stepped portion of the central through portion to achieve a connection. The nut connector outlet structure includes an outlet nut and an outlet tube, wherein one end of the outlet tube is formed to have a larger diameter than the other end, and is slidably inserted along the central through portion of the outlet nut, such that the inclined portion of the outlet tube engages with the stepped portion of the central through portion to achieve a connection.

6. The ultrasonic flow meter with a freely steerable connector connection structure according to claim 5, characterized in that, The outer circumferential surfaces of the inflow nut and the outflow nut are formed with multiple protrusions.

7. The ultrasonic flow meter with a freely steerable connector connection structure according to claim 2, characterized in that, The outer circumferential surfaces of the central outer tube and the inflow outer tube of the first main body are formed in a spiral shape, so as to be threadedly engaged with the central nut and the inflow nut respectively. The outer circumferential surfaces of the central outer tube and the outflow outer tube of the second main body are formed in a spiral shape, so as to be threadedly engaged with the central nut and the outflow nut respectively.

8. The ultrasonic flow meter with a freely steerable connector connection structure according to claim 3, characterized in that, While the pair of central nuts are threaded into the central outer tubes of the first and second main bodies on the left and right sides, they are simultaneously inserted into the pair of connecting tubes formed inside them, thereby tightly connecting to the central inner tubes formed inside the central outer tubes.

9. The ultrasonic flow meter with a freely steerable connector connection structure according to claim 5, characterized in that, The inflow nut and outflow nut, while being threaded into the inflow outer tube of the first main body and the outflow outer tube of the second main body respectively, are simultaneously inserted into the connecting tubes formed inside them, thereby tightly connecting to the inflow inner tubes and outflow inner tubes formed inside the inflow outer tube of the first main body and the outflow outer tube of the second main body.

10. The ultrasonic flow meter with a freely steerable connector connection structure according to claim 3 or 9, characterized in that, The connecting pipe is formed with a sleeve for wrapping the central inner pipe, the inflow inner pipe and the outflow inner pipe, and the inner side of the sleeve is integrally formed with a cylindrical part.

11. The ultrasonic flow meter with a freely steerable connector connection structure according to claim 1, characterized in that, The first body and the second body are respectively formed with a housing, the housing having an internal space for mounting an ultrasonic sensor, a first body cable terminal portion and a second body cable terminal portion are respectively formed on one side of the housing, and an openable and closable cover is respectively formed at the rear of the housing.

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