JP5268664B2

JP5268664B2 - Ultrasonic vortex flowmeter

Info

Publication number: JP5268664B2
Application number: JP2009005667A
Authority: JP
Inventors: 竜平山本
Original assignee: トキコテクノ株式会社
Priority date: 2009-01-14
Filing date: 2009-01-14
Publication date: 2013-08-21
Anticipated expiration: 2029-01-14
Also published as: JP2010164371A

Description

本発明は、超音波渦流量計に関する。 The present invention relates to an ultrasonic vortex flowmeter.

従来の超音波渦流量計の一例として、測定管に形成した２つのセンサ収納部に送信用、受信用超音波センサを夫々挿入し、各センサ収納部の開口部を、蓋で閉じて送信用、受信用超音波センサを固定するようにしたものがある（特許文献１参照）。 As an example of a conventional ultrasonic vortex flowmeter, for transmission, two ultrasonic sensors are inserted into two sensor housings formed in a measuring tube, and the openings of each sensor housing are closed with lids for transmission. There is one in which an ultrasonic sensor for reception is fixed (see Patent Document 1).

特開２０００−１５５０４３号公報JP 2000-155043 A

ところで、上述した従来技術では、送信用、受信用超音波センサの固定のために、２つのセンサ収納部に対して夫々蓋をする必要があり、その分、組立て工数が多くかかってしまう。
本発明は、簡易に組立て可能な超音波渦流量計を提供することを目的とする。 By the way, in the above-described prior art, it is necessary to cover the two sensor storage portions in order to fix the transmitting and receiving ultrasonic sensors, which increases the number of assembly steps.
An object of the present invention is to provide an ultrasonic vortex flowmeter that can be easily assembled.

本願の超音波渦流量計に係る発明は、カルマン渦を発生させる渦発生柱を有する測定管に、該測定管の流路を挟んで前記カルマン渦を検出する一組の超音波センサを夫々配置する超音波渦流量計であって、前記一組の超音波センサの夫々についてその頂部が露出した状態で先端側が挿入される有底の穴を有し、前記測定管の外周部に相対向して形成された一対のセンサ収納部と、互いに押付けられることにより結合部材により結合されて一体のケースとされ、前記測定管に組付けられて前記測定管における前記一対のセンサ収納部及びその形成部分に相当する測定管本体部を覆う２つのケース構成体と、を有し、前記２つのケース構成体のうちいずれか一方は、前記測定管への組付けに伴い、前記一組の超音波センサを前記穴の底部に押付け可能であることを特徴とする。 In the invention relating to the ultrasonic vortex flowmeter of the present application, a set of ultrasonic sensors for detecting the Karman vortex is arranged in a measurement tube having a vortex generating column for generating a Karman vortex, with the flow path of the measurement tube interposed therebetween. An ultrasonic vortex flowmeter having a bottomed hole into which the tip side of each of the set of ultrasonic sensors is exposed and facing the outer periphery of the measurement tube. The pair of sensor storage portions formed by the above-described structure are combined with each other by a coupling member by being pressed together to form an integral case, and the pair of sensor storage portions in the measurement tube and the formation portion thereof are assembled to the measurement tube. Two case components that cover the measurement tube main body corresponding to the above, and one of the two case components is attached to the measurement tube and the set of ultrasonic sensors. Press against the bottom of the hole Characterized in that it is a capability.

本願の発明によれば、簡易に組立てが可能である。 According to the invention of the present application, it can be easily assembled.

本発明の一実施の形態に係る超音波渦流量計を示す分解斜視図である。It is a disassembled perspective view which shows the ultrasonic vortex flowmeter which concerns on one embodiment of this invention. 図１の超音波渦流量計を示す斜視図である。It is a perspective view which shows the ultrasonic vortex flowmeter of FIG. 図２の超音波渦流量計を示す正面図である。It is a front view which shows the ultrasonic vortex flowmeter of FIG. 図３のＢ−Ｂ矢示線に沿う断面図である。It is sectional drawing which follows the BB arrow line of FIG. 図３の超音波渦流量計を示す側面図である。It is a side view which shows the ultrasonic vortex flowmeter of FIG. 図３の超音波渦流量計を示す平面図である。It is a top view which shows the ultrasonic vortex flowmeter of FIG. 図１の測定管及び本体ケースを示す平面図である。It is a top view which shows the measuring tube and main body case of FIG. 図１の超音波渦流量計を示す平面図である。It is a top view which shows the ultrasonic vortex flowmeter of FIG. 図２の超音波渦流量計の部分断面の背面図である。It is a rear view of the partial cross section of the ultrasonic vortex flowmeter of FIG. 図９のＡ−Ａ矢示線に沿う断面図である。It is sectional drawing which follows the AA arrow line of FIG.

以下、本発明の一実施の形態に係る超音波渦流量計を図１ないし図１０に基づいて説明する。
図１ないし図８において、超音波渦流量計１は、カルマン渦を発生させる渦発生柱２を有する測定管３に、測定管３の流路を挟んで前記カルマン渦を検出する送信用、受信用超音波センサ（以下、適宜、送信、受信センサ４，５という。）を夫々配置して大略、構成されている。本実施形態では、送信、受信センサ４，５が一組の超音波センサを構成している。 Hereinafter, an ultrasonic vortex flowmeter according to an embodiment of the present invention will be described with reference to FIGS.
1 to 8, an ultrasonic vortex flowmeter 1 includes a measuring tube 3 having a vortex generating column 2 that generates a Karman vortex, and transmits and receives the Karman vortex with the flow channel of the measuring tube 3 interposed therebetween. The ultrasonic sensors (hereinafter referred to as “transmission and reception sensors 4 and 5” as appropriate) are generally arranged. In the present embodiment, the transmission and reception sensors 4 and 5 constitute a set of ultrasonic sensors.

超音波渦流量計１は、測定管３に形成されて送信、受信センサ４，５を夫々収納する送信、受信センサ収納部６，７（一対のセンサ収納部）と、後述するように測定管３に組付けられて測定管本体部９を覆って測定管３を保持するケース１０と、を備えている。ケース１０は、本体ケース１１（２つのケース構成体のうち一方）と、有底で略矩形筒状のアンプケース１２（２つのケース構成体のうち他方）と、から大略構成され、両者には結合部材１５が備えられている。本体ケース１１及びアンプケース１２は、互いに押付けられて結合部材１５によりケース１０として一体に結合される。 The ultrasonic vortex flowmeter 1 is formed in a measurement tube 3 and includes transmission and reception sensors 4 and 5 for receiving and receiving sensors 4 and 5 (a pair of sensor storage portions), and a measurement tube as described later. 3, and a case 10 that covers the measurement tube main body 9 and holds the measurement tube 3. The case 10 is generally composed of a main body case 11 (one of two case components) and a bottomed, substantially rectangular tube-shaped amplifier case 12 (the other of two case components). A coupling member 15 is provided. The main body case 11 and the amplifier case 12 are pressed together and integrally coupled as a case 10 by a coupling member 15.

アンプケース１２は、略矩形の底板（アンプケース底板１７という。）と、アンプケース底板１７の外周部から立ち上がるように設けられ略矩形をなすように互いに連接された４つの側壁部（以下、アンプケース第１、第２、第３、第４側壁部２１，２２，２３，２４という。）と、から大略構成されている。
アンプケース第１、第２側壁部２１，２２は相対向して形成され、アンプケース第３、第４側壁部２３，２４は相対向して形成されている。本体ケース１１及びアンプケース１２は、ケース１０としての一体化に際し、アンプケース第１、第２側壁部２１，２２の頂部（下部端面）が、本体ケース第１、第２側壁部３１，３２の頂部（上部端面）と重ねられ、アンプケース第３、第４側壁部２３，２４の頂部（下部端面）が、本体ケース第３、第４側壁部３３，３４の頂部（上部端面）と重ねられるようになっている。
アンプケース第１、第２側壁部２１，２２の夫々には、後述する爪４０ａと爪４０ｂとからなる二組の爪４０と共に結合部材１５を構成する孔（以下、結合用孔４１という。）が夫々４つ形成されている。なお、これら４つの結合用孔４１は結合用孔４１ａと結合用孔４１ｂとからなる二組の孔よりなり、また、アンプケース第１、第２側壁部２１，２２の夫々の内面において結合用孔４１ａと結合用孔４１ｂとの間には、一端がアンプケース第１、第２側壁部２１，２２の頂部に至ると共に他端がアンプケース底板１７に至る溝部（図示せず）が形成されている。そして、爪４０ａ，ｂがアンプケース第１、第２側壁部２１，２２の内面に形成された溝部に挿入されることにより、爪４０ａ，ｂが結合用孔４１ａ，４０ｂにそれぞれ結合することにより本体ケース１１とアンプケース１２とが結合される。 The amplifier case 12 has a substantially rectangular bottom plate (referred to as an amplifier case bottom plate 17) and four side wall portions (hereinafter referred to as amplifiers) that are provided so as to rise from the outer periphery of the amplifier case bottom plate 17 and are connected to each other so as to form a substantially rectangular shape. Case first, second, third, and fourth side wall portions 21, 22, 23, and 24).
The amplifier case first and second side wall portions 21 and 22 are formed to face each other, and the amplifier case third and fourth side wall portions 23 and 24 are formed to face each other. When the main body case 11 and the amplifier case 12 are integrated as the case 10, the top portions (lower end surfaces) of the amplifier case first and second side wall portions 21 and 22 are connected to the main body case first and second side wall portions 31 and 32. The top portion (upper end surface) is overlapped, and the top portions (lower end surfaces) of the amplifier case third and fourth side wall portions 23 and 24 are overlapped with the top portions (upper end surfaces) of the main body case third and fourth side wall portions 33 and 34. It is like that.
Each of the amplifier case first and second side wall portions 21 and 22 has a hole (hereinafter, referred to as a coupling hole 41) that constitutes the coupling member 15 together with two sets of claws 40 including claws 40a and claws 40b described later. There are four each. These four coupling holes 41 are composed of two sets of holes including a coupling hole 41a and a coupling hole 41b, and are used for coupling on the inner surfaces of the amplifier case first and second side wall portions 21 and 22, respectively. A groove (not shown) is formed between the hole 41a and the coupling hole 41b so that one end reaches the top of the amplifier case first and second side wall parts 21 and 22 and the other end reaches the amplifier case bottom plate 17. ing. Then, the claws 40a and b are inserted into the groove portions formed on the inner surfaces of the amplifier case first and second side wall portions 21 and 22, whereby the claws 40a and b are coupled to the coupling holes 41a and 40b, respectively. The main body case 11 and the amplifier case 12 are coupled.

送信、受信センサ収納部６，７は、夫々、送信、受信センサ４，５の夫々についてその頂部が露出した状態で先端側が挿入される有底の穴４５を有している。図１又は図２に示されるように、送信、受信センサ４，５と送信、受信センサ収納部６，７との間にはＯリング６５が介在されている。送信、受信センサ収納部６，７が有する穴４５を、以下、センサ収納部穴４５という。また、センサ収納部穴４５の底部をセンサ収納部穴底部４６という。
測定管３における送信、受信センサ収納部６，７及び当該送信、受信センサ収納部６，７を形成した部分を適宜、測定管本体部９という。 The transmission / reception sensor storage portions 6 and 7 each have a bottomed hole 45 into which the tip side is inserted with the tops of the transmission and reception sensors 4 and 5 exposed. As shown in FIG. 1 or 2, an O-ring 65 is interposed between the transmission / reception sensors 4, 5 and the transmission / reception sensor storage units 6, 7. The holes 45 included in the transmission and reception sensor storage units 6 and 7 are hereinafter referred to as sensor storage unit holes 45. The bottom of the sensor housing hole 45 is referred to as a sensor housing hole bottom 46.
The transmission and reception sensor storage portions 6 and 7 and the portion where the transmission and reception sensor storage portions 6 and 7 are formed in the measurement tube 3 are appropriately referred to as a measurement tube main body portion 9.

送信、受信センサ４，５は、センサ収納部穴底部４６に接触して配置されるセンサ素子４７と、頂部側に相当するセンサ本体部４８と、センサ素子４７及びセンサ本体部４８間に介在されて両者を保持するセンサ保持部材４９と、から大略構成されている。送信、受信センサ４，５は、センサ本体部４８の一部（頂部）が送信、受信センサ収納部６，７から突出して、センサ収納部穴４５に挿入される。 The transmission and reception sensors 4 and 5 are interposed between the sensor element 47 arranged in contact with the sensor housing hole bottom 46, the sensor body 48 corresponding to the top side, and the sensor element 47 and the sensor body 48. And a sensor holding member 49 for holding both of them. In the transmission / reception sensors 4 and 5, a part (top) of the sensor main body portion 48 protrudes from the transmission / reception sensor storage portions 6 and 7 and is inserted into the sensor storage portion hole 45.

超音波渦流量計１は、さらに、図９及び図１０にも示すように、送信、受信センサ４，５に対して導線５０を介して接続されて、送信、受信センサ４，５の超音波送信、受信作動に伴って得られる信号の処理を行う図示しない信号処理部材を搭載した基板５１と、アンプケース１２の開口部を覆い、かつ、中央部分に、導線５０を通す孔５２を形成したアンプケース底板１７と、本体ケース１１及びアンプケース１２間に介在されるパッキン５４と、を備えている。アンプケース底板１７に形成された孔５２を、以下、アンプケース底板孔５２という。また、アンプケース底板１７におけるアンプケース底板孔５２を形成した部分をアンプケース底板孔形成部５３という。アンプケース底板孔形成部５３は、後述する導線引出し部５６を覆い得るように略有底筒状をなし、かつ底部（符号省略）に前記アンプケース底板孔５２が形成されている。 The ultrasonic vortex flowmeter 1 is further connected to the transmission / reception sensors 4 and 5 via a conductor 50 as shown in FIGS. A substrate 51 on which a signal processing member (not shown) for processing signals obtained in accordance with transmission and reception operations is mounted, and an opening 52 for covering the opening of the amplifier case 12 and through which the conductive wire 50 passes are formed in the central portion. An amplifier case bottom plate 17 and a packing 54 interposed between the main body case 11 and the amplifier case 12 are provided. Hereinafter, the hole 52 formed in the amplifier case bottom plate 17 is referred to as an amplifier case bottom plate hole 52. The portion of the amplifier case bottom plate 17 where the amplifier case bottom plate hole 52 is formed is referred to as an amplifier case bottom plate hole forming portion 53. The amplifier case bottom plate hole forming portion 53 has a substantially bottomed cylindrical shape so as to cover a conductor lead-out portion 56 described later, and the amplifier case bottom plate hole 52 is formed in the bottom portion (reference numeral omitted).

超音波渦流量計１は、さらに、測定管３に形成される筒状の前記導線引出し部５６とアンプケース底板孔形成部５３との間に介在されるＯリング５９と、を備えている。測定管本体部９（測定管３）には、図４及び図１０に示すように、導線引出し部５６及びセンサ収納部穴４５を連通する導線用通路６０が形成されており、導線５０を通すようにしている。 The ultrasonic vortex flowmeter 1 further includes an O-ring 59 interposed between the cylindrical lead wire drawing portion 56 formed in the measurement tube 3 and the amplifier case bottom plate hole forming portion 53. As shown in FIGS. 4 and 10, the measuring tube main body 9 (measuring tube 3) is formed with a conducting wire passage 60 that communicates the conducting wire drawing portion 56 and the sensor housing hole 45, and allows the conducting wire 50 to pass therethrough. I am doing so.

本体ケース１１は、測定管３への組付け時に送信、受信センサ４，５のセンサ本体部４８（頂部）に当接する、相対向して設けられた前記本体ケース第１、第２側壁部３１，３２と、本体ケース第１、第２側壁部３１，３２に連接し本体ケース第１、第２側壁部３１，３２と共に内側に空間部を形成する前記本体ケース第３、第４側壁部３３，３４と、本体ケース第１、第２、第３、第４側壁部３１，３２，３３，３４に連接する底部（以下、本体ケース底部３５という。）と、からなっている。本体ケース第３、第４側壁部３３，３４は、測定管３に沿う形状で測定管３を載置可能の溝部３６を有している。 When the body case 11 is assembled to the measuring tube 3, the body case first and second side wall portions 31 provided opposite to each other are in contact with the sensor body portions 48 (top portions) of the transmission and reception sensors 4 and 5. , 32 and the main body case first and second side wall portions 31, 32 and the main body case first and second side wall portions 31, 32 together with the main body case first and second side wall portions 31, 32 to form a space inside. , 34 and a bottom portion connected to the first, second, third, and fourth side wall portions 31, 32, 33, 34 (hereinafter referred to as a main body case bottom portion 35). The main body case third and fourth side wall portions 33, 34 have a groove portion 36 in which the measurement tube 3 can be placed in a shape along the measurement tube 3.

本体ケース第１、第２側壁部３１，３２は、図４及び図１０に良く示されるように、本体ケース底部３５に対して鈍角をなすように、すなわち頂部側（本体ケース１１の開口部側。図４及び図１０の上側）が基部側（図４及び図１０の下側）より本体ケース１１の外方になるように形成されている。
本体ケース第１、第２側壁部３１，３２のそれぞれの頂部には、図１に示すように、爪４１ａと爪４１ｂとからなる二組の爪４０が設けられている。爪４０は、本体ケース第１、第２側壁部３１，３２から立ち上がるように形成された爪軸部６２（６２ａ，６２ｂ）と、爪軸部６２（６２ａ，６２ｂ）の先端から本体ケース第１、第２側壁部３１，３２の面に沿う方向に向けて突出し、結合用孔４１（４１ａ，４１ｂ）の底部に係合する爪本体６３（６３ａ，６３ｂ）と、からなっており、弾性部材で構成され、弾性力を発揮するようになっている。そして、本体ケース１１の爪４０（４０ａ，４０ｂ）の爪本体６３（６３ａ，６３ｂ）が、アンプケース１２の結合用孔４１（４１ａ，４１ｂ）の底部に係合されることにより、本体ケース１１及びアンプケース１２は、一体に結合されケース１０を構成することになる。 As shown in FIGS. 4 and 10, the main body case first and second side wall portions 31 and 32 form an obtuse angle with respect to the main body case bottom 35, that is, the top side (the opening side of the main body case 11). 4 and 10 is formed so that the base side (the lower side of FIGS. 4 and 10) is located outside the main body case 11.
As shown in FIG. 1, two sets of claws 40 each including a claw 41a and a claw 41b are provided on the tops of the first and second side wall portions 31 and 32, respectively. The claw 40 includes a claw shaft 62 (62a, 62b) formed so as to rise from the first and second side wall portions 31, 32, and a main body case first from the tip of the claw shaft 62 (62a, 62b). A claw body 63 (63a, 63b) that protrudes in a direction along the surface of the second side wall portions 31, 32 and engages with the bottom of the coupling hole 41 (41a, 41b), and is an elastic member. It is composed of and is designed to exert its elastic force. And the nail | claw main body 63 (63a, 63b) of the nail | claw 40 (40a, 40b) of the main body case 11 is engaged with the bottom part of the coupling hole 41 (41a, 41b) of the amplifier case 12, so that the main body case 11 The amplifier case 12 is integrally coupled to form the case 10.

アンプケース第１、第２側壁部２１，２２に設けられた結合用孔４１ａと結合用孔４１ｂとの間隔は、爪軸部６２ａと爪軸部６２ｂとの間隔と略同一とされており、かつ、爪本体６３ａと爪本体６３ｂとの間隔よりも狭く設定されている。従って、アンプケース第１、第２側壁部２１，２２の内面に設けられた溝部に爪４１（爪４１ａ，爪４１ｂ）が挿入されると、爪４１の爪本体６３が結合用孔４１に至るまでは、爪４０は、その弾性力によりアンプケース第１、第２側壁部２１，２２の溝部側壁に対し外方の力を作用させる。 The distance between the coupling hole 41a and the coupling hole 41b provided in the amplifier case first and second side wall parts 21 and 22 is substantially the same as the distance between the claw shaft part 62a and the claw shaft part 62b. And it is set narrower than the space | interval of the nail | claw main body 63a and the nail | claw main body 63b. Therefore, when the claw 41 (claw 41a, claw 41b) is inserted into the groove provided on the inner surface of the amplifier case first and second side wall portions 21, 22, the claw body 63 of the claw 41 reaches the coupling hole 41. Until then, the claw 40 applies an outward force to the groove side walls of the amplifier case first and second side walls 21 and 22 by its elastic force.

上述したように構成された超音波渦流量計１では、以下のように組付が行われる。すなわち、アンプケース底板孔５２、導線引出し部５６及び導線用通路６０を通された導線５０の一端側が接続された送信、受信センサ４，５の夫々を、送信、受信センサ収納部６，７の各センサ収納部穴４５に挿入する一方、内側に基板５１が挿入され、開口部にパッキン５４を介してアンプケース底板１７があてがわれたアンプケース１２を測定管本体部９に配置し、この状態で、本体ケース１１を、測定管本体部９側に向けて（図１上方向に）移動させる。 In the ultrasonic vortex flowmeter 1 configured as described above, assembly is performed as follows. That is, each of the transmission and reception sensors 4 and 5 to which one end side of the conductor 50 passed through the amplifier case bottom plate hole 52, the conductor lead-out portion 56 and the conductor passage 60 is connected is sent to the transmission and reception sensor storage portions 6 and 7, respectively. An amplifier case 12 having a substrate 51 inserted inside and an amplifier case bottom plate 17 applied to the opening via a packing 54 is disposed in the measuring tube main body 9 while being inserted into each sensor housing hole 45. In the state, the main body case 11 is moved toward the measuring tube main body portion 9 (upward in FIG. 1).

この本体ケース１１の移動に伴い、本体ケース第１、第２側壁部３１，３２に設けた爪４０の爪本体６３がアンプケース第１、第２側壁部２１，２２の内面に形成された溝部（図示せず）の側面に接触しつつ図１上方向に移動する。これにより、アンプケース第１、第２側壁部２１，２２の内面とセンサ本体部４８の端面が当接し、本体ケース第１、第２側壁部３１，３２の内壁に送信、受信センサ４，５の各センサ本体部４８（頂部）が当接する。即ち、送信、受信センサ４，５の各センサ本体部４８は測定管本体部９とアンプケース第１、第２側壁部２１，２２により挟持された状態となる。
さらに、本体ケース１１を同方向に所定量、移動させることにより、本体ケース第１〜第４側壁部３１〜３４の頂部とアンプケース第１〜第４側壁部２１〜２４の頂部との当接及び爪本体６３の結合用孔４１への係合が行われる。
爪本体６３の結合用孔４１への係合により、爪本体６３が結合用孔４１に引っかかって本体ケース１１及びアンプケース１２が結合され、一体化されたケース１０が形成され、当該ケース１０は、送信、受信センサ４，５が収納された送信、受信センサ収納部６，７を覆う状態で測定管３を保持することになる。 Along with the movement of the main body case 11, the claw body 63 of the claw 40 provided on the first and second side wall portions 31 and 32 is a groove formed on the inner surfaces of the amplifier case first and second side wall portions 21 and 22. It moves upward in FIG. 1 while contacting the side surface (not shown). As a result, the inner surfaces of the amplifier case first and second side wall portions 21 and 22 and the end surface of the sensor main body portion 48 come into contact with each other, and the transmitting and receiving sensors 4 and 5 are transmitted to the inner walls of the main body case first and second side wall portions 31 and 32. Each sensor main body part 48 (top part) contacts. That is, the sensor main bodies 48 of the transmission and reception sensors 4 and 5 are sandwiched between the measurement tube main body 9 and the amplifier case first and second side walls 21 and 22.
Further, by moving the main body case 11 in the same direction by a predetermined amount, the top of the main body case first to fourth side wall portions 31 to 34 and the top of the amplifier case first to fourth side wall portions 21 to 24 contact each other. And the engagement of the claw body 63 with the coupling hole 41 is performed.
By engaging the claw body 63 with the coupling hole 41, the claw body 63 is caught in the coupling hole 41, and the main body case 11 and the amplifier case 12 are coupled to form an integrated case 10. The measurement tube 3 is held in a state of covering the transmission and reception sensor storage units 6 and 7 in which the transmission and reception sensors 4 and 5 are stored.

なお、この際においても、送信、受信センサ４，５は本体ケース第１、第２側壁部３１，３２による押付力を受けてセンサ収納部穴底部４６に押付けられた状態が保持されている。よって、本体ケース１１及びアンプケース１２が結合された状態でも、送信、受信センサ４，５は本体ケース第１、第２側壁部３１，３２によりセンサ収納部穴底部４６に押付けられ、測定管３を介した超音波の送受信を良好に行えるようにしている。 Even in this case, the transmission and reception sensors 4 and 5 are held in a state where they are pressed against the sensor housing hole bottom 46 by receiving the pressing force from the first and second side wall portions 31 and 32 of the main body case. Therefore, even when the main body case 11 and the amplifier case 12 are coupled, the transmission and reception sensors 4 and 5 are pressed against the sensor housing hole bottom 46 by the first and second side wall portions 31 and 32, and the measurement tube 3 The ultrasonic wave can be transmitted and received through the.

上述したように、本実施形態によれば、本体ケース１１及びアンプケース１２を測定管３に組み付けることにより、当該組付により得られるケース１０が測定管３を保持すると共に、当該組付により送信、受信センサ４，５の測定管３への押付け並びに送信、受信センサ４，５の収納保持を行なうことができる。このため、本実施形態によれば、送信、受信センサ４，５の収納、保持を、夫々別部材（送信、受信センサに対して夫々専用の蓋など）で、かつ、個別に操作して行う（ひいては、作業工程が多く必要とされる）従来技術に比して、簡易にかつ迅速に行なうことができる。 As described above, according to the present embodiment, when the main body case 11 and the amplifier case 12 are assembled to the measurement tube 3, the case 10 obtained by the assembly holds the measurement tube 3 and is transmitted by the assembly. The receiving sensors 4 and 5 can be pressed against the measuring tube 3 and transmitted, and the receiving sensors 4 and 5 can be stored and held. For this reason, according to the present embodiment, the transmission and reception sensors 4 and 5 are housed and held by separate members (such as lids dedicated to the transmission and reception sensors) and individually operated. Compared with the prior art (as a result, many work processes are required), it can be performed easily and rapidly.

１…超音波渦流量計、２…渦発生柱、３…測定管、４…送信センサ、５…受信センサ、６…送信センサ収納部、７…受信センサ収納部、９…測定管本体部、１０…ケース、１１…本体ケース（２つのケース構成体のうち一方）、１２…アンプケース（２つのケース構成体のうち他方）、１５…結合部材、４０…爪、４１…結合用孔、４５…センサ収納部穴、４６…センサ収納部穴底部。 DESCRIPTION OF SYMBOLS 1 ... Ultrasonic vortex flowmeter, 2 ... Vortex generating column, 3 ... Measurement tube, 4 ... Transmission sensor, 5 ... Reception sensor, 6 ... Transmission sensor storage part, 7 ... Reception sensor storage part, 9 ... Measurement tube main-body part, DESCRIPTION OF SYMBOLS 10 ... Case, 11 ... Main body case (one of two case components), 12 ... Amplifier case (the other of two case components), 15 ... Coupling member, 40 ... Claw, 41 ... Coupling hole, 45 ... Sensor housing hole, 46 ... Sensor housing hole bottom.

Claims

An ultrasonic vortex flowmeter in which a set of ultrasonic sensors for detecting the Karman vortex is disposed on a measurement tube having a vortex generating column for generating Karman vortex, with the flow path of the measurement tube interposed therebetween,
Each of the pair of ultrasonic sensors has a bottomed hole into which the tip side is inserted in a state where the top portion is exposed, and a pair of sensor storage portions formed opposite to the outer peripheral portion of the measurement tube; ,
By being pressed against each other, they are joined together by a coupling member to form an integral case, and are attached to the measurement tube so as to cover the pair of sensor storage portions in the measurement tube and the measurement tube main body corresponding to the forming portion. A case structure,
An ultrasonic vortex flowmeter characterized in that either one of the two case components is capable of pressing the set of ultrasonic sensors against the bottom of the hole when assembled to the measurement tube. .

2. The ultrasonic vortex flowmeter according to claim 1, wherein one of the two case structural bodies is provided opposite to each other so as to come into contact with a top portion of the set of ultrasonic sensors when assembled to the measurement tube. The first and second side wall portions, the third and fourth side wall portions connected to the first and second side wall portions and forming a space portion inside together with the first and second side wall portions, and the first and second side walls. And a bottom portion connected to the third and fourth side wall portions, and the third and fourth side wall portions have a groove portion on which the measurement tube can be placed in a shape along the measurement tube. Sonic vortex flowmeter.

The ultrasonic vortex flowmeter according to claim 1 or 2, wherein the other of the two case components contains a signal processing member that processes signals detected by the set of ultrasonic sensors. Ultrasonic vortex flowmeter.

The ultrasonic vortex flowmeter according to any one of claims 1 to 3, wherein the coupling member includes a claw member and a hole portion to which the claw member is locked, and the claw member and the hole portion include two cases. An ultrasonic vortex flowmeter, wherein the ultrasonic vortex flowmeter is selectively provided on one and the other of the components.