CN117444551B - Manufacturing process and measurement method of a high-precision Venturi flowmeter - Google Patents
Manufacturing process and measurement method of a high-precision Venturi flowmeter Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000000691 measurement method Methods 0.000 title claims description 8
- 239000002184 metal Substances 0.000 claims abstract description 33
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000009530 blood pressure measurement Methods 0.000 abstract description 3
- 230000010349 pulsation Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 abstract 1
- 238000004080 punching Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000003345 natural gas Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
- G01F1/40—Details of construction of the flow constriction devices
- G01F1/44—Venturi tubes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/02—Compensating or correcting for variations in pressure, density or temperature
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Abstract
Description
技术领域Technical field
本发明涉及一种高精度文丘里流量计的制造工艺及测量方法,属于文丘里流量计技术领域。The invention relates to a manufacturing process and a measurement method of a high-precision Venturi flowmeter, and belongs to the technical field of Venturi flowmeters.
背景技术Background technique
文丘里流量计是一种常用的测量有压管道流量的装置,属压差式流量计,常用于测量空气、天然气、煤气、水等流体的流量。Venturi flowmeter is a commonly used device for measuring the flow of pressurized pipelines. It is a differential pressure flowmeter and is often used to measure the flow of fluids such as air, natural gas, coal gas, and water.
一般文丘里需要加一个环室来提高测量精度,现目前这种环室设置在文丘里外部,承压效果差,造成流态不稳的问题,不利于提高测量的精准性,且一般测量方式,无法更稳定更精准地测量。因此,针对上述问题提出一种高精度文丘里流量计的制造工艺及测量方法。Generally, a venturi needs to add an annular chamber to improve measurement accuracy. Currently, this annular chamber is set outside the venturi, which has poor pressure-bearing effect and causes unstable flow patterns, which is not conducive to improving measurement accuracy. And the general measurement method , unable to measure more stably and accurately. Therefore, a manufacturing process and measurement method of a high-precision Venturi flowmeter are proposed to address the above problems.
发明内容Contents of the invention
本发明的目的就在于为了解决上述问题而提供一种高精度文丘里流量计的制造工艺及测量方法。The purpose of the present invention is to provide a manufacturing process and measurement method of a high-precision Venturi flowmeter in order to solve the above problems.
本发明通过以下技术方案来实现上述目的,一种高精度文丘里流量计的制造工艺,具体工艺步骤如下:The present invention achieves the above object through the following technical solutions, a manufacturing process of a high-precision Venturi flowmeter, the specific process steps are as follows:
步骤一、在文丘里管的内部加工出环槽,且以锥度与圆锥角的关系对环槽边上角度进行加工;Step 1: Process an annular groove inside the venturi tube, and process the angle on the edge of the annular groove based on the relationship between taper and cone angle;
步骤二、加工出金属环并在其表面上等距打出四个均压孔,金属环截面厚度范围为1cm至2cm;Step 2: Process the metal ring and punch four pressure equalizing holes at equal intervals on its surface. The cross-sectional thickness of the metal ring ranges from 1cm to 2cm;
步骤三、将带有均压孔的金属环通过液压扩张镶至环槽槽口内形成腔室;Step 3: Insert the metal ring with the pressure equalizing hole into the ring groove through hydraulic expansion to form a chamber;
步骤四、每一个腔室内与外部空间之间根据需要不限于设置四个孔连通,用于安装测量压力传感器;Step 4: There are not limited to four holes connected between the inner and outer spaces of each chamber as needed for installing measuring pressure sensors;
所述锥度C与圆锥角α的关系为C=2×tan(α/2);The relationship between the taper C and the cone angle α is C=2×tan(α/2);
所述环槽截面为喇叭锥形状结构,且喇叭锥形状结构与金属环之间接触强度由液压扩张控制,使金属环和主体牢固接触。The cross-section of the ring groove is a horn-cone shaped structure, and the contact strength between the horn-cone shaped structure and the metal ring is controlled by hydraulic expansion, so that the metal ring and the main body are in firm contact.
优选的,所述均压孔孔径范围为孔直径8mm至10mm。Preferably, the pore diameter of the pressure equalizing hole ranges from 8 mm to 10 mm.
优选的,所述文丘里管内不限于加工设置两处腔室,每一个腔室位于文丘里管的不同管径处。Preferably, the venturi tube is not limited to two chambers, each chamber being located at a different diameter of the venturi tube.
一种高精度文丘里流量计的测量方法,具体测量步骤如下:A high-precision Venturi flowmeter measurement method. The specific measurement steps are as follows:
S1、在金属环上的均压孔将腔室内的压力处于均衡稳定状态下,测量介质通过金属环上的四个均压孔进入腔室内,同时测量介质压力进行均衡成压;S1. The pressure equalizing holes on the metal ring keep the pressure in the chamber in a balanced and stable state. The measuring medium enters the chamber through the four pressure equalizing holes on the metal ring, and the medium pressure is measured at the same time to equalize the pressure;
S2、测量时,通过均压孔处的差压变量,将所测得的压力进行测量转换成流量信号显示出来。S2. During measurement, the measured pressure is measured and converted into a flow signal through the differential pressure variable at the pressure equalizing hole and displayed.
本发明的有益效果是:The beneficial effects of the present invention are:
1、在文丘里管内设置环槽并结合液压扩张在环槽槽口处压装金属环,起到形成用于测量的腔室的作用,且金属环上设置均压孔,可保证腔室内测量状态的稳定性;1. Set up an annular groove in the venturi tube and combine it with hydraulic expansion to press-fit a metal ring at the notch of the annular groove to form a chamber for measurement, and a pressure equalizing hole is provided on the metal ring to ensure measurement in the chamber. Stability of state;
2、环槽内壁以锥度与圆锥角的关系对环槽边上角度进行加工,能够利用文丘里管内部槽口对金属环实时进行向外挤压,使金属环和主体能够稳固结合;2. The inner wall of the ring groove is processed according to the relationship between taper and cone angle, so that the internal notch of the venturi tube can be used to squeeze the metal ring outward in real time, so that the metal ring and the main body can be firmly combined;
3、在金属环上的均压孔将腔室内的压力处于均衡稳定状态下,测量介质通过环槽上的四个孔进行腔室内,同时测量介质压力进行均衡成压,避免测量介质流过时脉动对测压造成影响,测量的稳定性得到提高;3. The pressure equalizing hole on the metal ring keeps the pressure in the chamber in a balanced and stable state. The measuring medium flows into the chamber through the four holes on the ring groove. At the same time, the pressure of the medium is measured to equalize the pressure to avoid pulsation when the measuring medium flows. It affects the pressure measurement and improves the stability of the measurement;
4、通过均压孔处的差压变量,将所测得的压力进行测量转换成流量信号显示出来,对于在流态不稳的情况下,通过均压转换进一步地提高测量的精准性和稳定性。4. Through the differential pressure variable at the pressure equalizing hole, the measured pressure is measured and converted into a flow signal for display. In the case of unstable flow conditions, the accuracy and stability of the measurement can be further improved through pressure equalizing conversion. sex.
附图说明Description of the drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其它的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.
图1为本发明中文丘里流量计结构示意图;Figure 1 is a schematic structural diagram of the Venturi flowmeter of the present invention;
图2为本发明中文丘里流量计的局部结构放大图。Figure 2 is an enlarged view of a partial structure of the Venturi flowmeter of the present invention.
图中:1、文丘里管;11、环槽;12、孔;2、腔室;3、金属环;31、均压孔。In the picture: 1. Venturi tube; 11. Ring groove; 12. Hole; 2. Chamber; 3. Metal ring; 31. Pressure equalizing hole.
具体实施方式Detailed ways
为使得本发明的目的、特征、优点能够更加的明显和易懂,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,下面所描述的实施例仅仅是本发明一部分实施例,而非全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。In order to make the purpose, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, what is described below The embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation modes.
在本发明的描述中,需要理解的是,术语“上”、“下”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on those shown in the accompanying drawings. The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.
请参阅图1-2所示,一种高精度文丘里流量计的制造工艺,一种高精度文丘里流量计的制造工艺,具体工艺步骤如下:Please refer to Figure 1-2, a manufacturing process of a high-precision Venturi flowmeter, a manufacturing process of a high-precision Venturi flowmeter. The specific process steps are as follows:
步骤一、在文丘里管1的内部加工出环槽11,且以锥度C与圆锥角α的关系对环槽边上角度进行加工;Step 1: Process an annular groove 11 inside the venturi tube 1, and process the angle on the edge of the annular groove based on the relationship between the taper C and the cone angle α;
步骤二、加工出金属环3并在其表面上等距打出四个均压孔31,金属环3截面厚度范围为1cm至2cm;Step 2: Process the metal ring 3 and punch four equalizing holes 31 on its surface at equal intervals. The thickness of the cross-section of the metal ring 3 ranges from 1cm to 2cm;
步骤三、将带有均压孔31的金属环3通过液压扩张镶至环槽11槽口内形成腔室2;Step 3: Insert the metal ring 3 with the pressure equalizing hole 31 into the notch of the ring groove 11 through hydraulic expansion to form the chamber 2;
步骤四、每一个腔室2内与外部空间之间根据需要不限于设置四个孔12连通,用于安装测量压力传感器;Step 4: There are not limited to four holes 12 provided as needed to communicate between the interior of each chamber 2 and the external space for installing measuring pressure sensors;
所述锥度C与圆锥角α的关系为C=2×tan(α/2);The relationship between the taper C and the cone angle α is C=2×tan(α/2);
所述环槽11截面为喇叭锥形状结构,且喇叭锥形状结构与金属环3之间接触强度由液压扩张控制,使金属环3和主体牢固接触。The cross section of the ring groove 11 is a horn-cone shaped structure, and the contact strength between the horn-cone shaped structure and the metal ring 3 is controlled by hydraulic expansion, so that the metal ring 3 and the main body are in firm contact.
更近一步地,所述均压孔31孔径范围为孔直径8mm至10mm。Furthermore, the hole diameter of the pressure equalizing hole 31 ranges from 8 mm to 10 mm.
更近一步地,所述文丘里管1内不限于加工设置两处腔室2,每一个腔室2位于文丘里管1的不同管径处。Furthermore, the venturi tube 1 is not limited to having two chambers 2 , each chamber 2 is located at a different diameter of the venturi tube 1 .
一种高精度文丘里流量计的测量方法,具体测量步骤如下:A high-precision Venturi flowmeter measurement method. The specific measurement steps are as follows:
S1、在金属环3上的均压孔31将腔室2内的压力处于均衡稳定状态下,测量介质通过金属环3上的四个均压孔31进入腔室2内,同时测量介质压力进行均衡成压,避免测量介质流过时脉动对测压造成影响,测量的稳定性得到提高;S1. The pressure equalizing holes 31 on the metal ring 3 keep the pressure in the chamber 2 in a balanced and stable state. The measuring medium enters the chamber 2 through the four pressure equalizing holes 31 on the metal ring 3, and the medium pressure is measured at the same time. Equalize the pressure to avoid the impact of pulsation on the pressure measurement when the measurement medium flows, and the stability of the measurement is improved;
S2、测量时,通过均压孔31处的差压变量,将所测得的压力进行测量转换成流量信号显示出来,对于在流态不稳的情况下,通过均压转换进一步地提高测量的精准性和稳定性。S2. During measurement, the measured pressure is measured and converted into a flow signal through the differential pressure variable at the pressure equalizing hole 31 and displayed. In the case of unstable flow conditions, the measured accuracy can be further improved through pressure equalizing conversion. Accuracy and stability.
对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的得同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as illustrative and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is therefore intended that all claims falling within the claims All changes within the meaning and scope of the equivalent requirements are included in the present invention. Any reference signs in the claims shall not be construed as limiting the claim in question.
以上所述,以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。As mentioned above, the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the foregoing. The technical solutions described in each embodiment may be modified, or some of the technical features may be equivalently replaced; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.
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Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2325762Y (en) * | 1998-06-29 | 1999-06-23 | 中国核动力研究设计院 | Micro Flow Measuring Device |
CN103791953A (en) * | 2013-05-28 | 2014-05-14 | 苍南自动化仪表厂 | High-precision integrated nuclear Venturi tube |
CN205861133U (en) * | 2016-07-25 | 2017-01-04 | 湖北省计量测试技术研究院 | Venturi double difference pressure ultrasonic flow rate measurement apparatus |
CN206311150U (en) * | 2016-12-15 | 2017-07-07 | 淮南庆达机械有限责任公司 | Self-correcting Fast Installation formula Venturi tube |
CN107144312A (en) * | 2017-05-26 | 2017-09-08 | 苏州天大泰和自控仪表技术有限公司 | Flow measuring apparatus and flow meter assembly |
CN108444555A (en) * | 2018-04-11 | 2018-08-24 | 哈尔滨理工大学 | A kind of novel Venturi tube-type spreader flowmeter |
CN108548574A (en) * | 2018-04-08 | 2018-09-18 | 江阴市节流装置厂有限公司 | A kind of built-in Venturi meter that achievable bidirectional traffics measure |
CN208547386U (en) * | 2018-08-08 | 2019-02-26 | 杭州成套节流装置有限公司 | A kind of Venturi nozzle |
CN209027599U (en) * | 2018-12-07 | 2019-06-25 | 四川勤华科技有限公司 | A kind of redundant flow measuring device |
CN209589141U (en) * | 2019-03-04 | 2019-11-05 | 上海科洋科技股份有限公司 | A kind of measuring device |
CN213455639U (en) * | 2020-11-30 | 2021-06-15 | 深圳市量宇科技有限公司 | Gas flowmeter suitable for severe working conditions |
CN217716509U (en) * | 2022-05-09 | 2022-11-01 | 江阴市节流装置厂有限公司 | Synthetic gas venturi flowmeter for synthetic ammonia device adopting double-circular-arc contraction |
-
2023
- 2023-12-25 CN CN202311792092.7A patent/CN117444551B/en active Active
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2325762Y (en) * | 1998-06-29 | 1999-06-23 | 中国核动力研究设计院 | Micro Flow Measuring Device |
CN103791953A (en) * | 2013-05-28 | 2014-05-14 | 苍南自动化仪表厂 | High-precision integrated nuclear Venturi tube |
CN205861133U (en) * | 2016-07-25 | 2017-01-04 | 湖北省计量测试技术研究院 | Venturi double difference pressure ultrasonic flow rate measurement apparatus |
CN206311150U (en) * | 2016-12-15 | 2017-07-07 | 淮南庆达机械有限责任公司 | Self-correcting Fast Installation formula Venturi tube |
CN107144312A (en) * | 2017-05-26 | 2017-09-08 | 苏州天大泰和自控仪表技术有限公司 | Flow measuring apparatus and flow meter assembly |
CN108548574A (en) * | 2018-04-08 | 2018-09-18 | 江阴市节流装置厂有限公司 | A kind of built-in Venturi meter that achievable bidirectional traffics measure |
CN108444555A (en) * | 2018-04-11 | 2018-08-24 | 哈尔滨理工大学 | A kind of novel Venturi tube-type spreader flowmeter |
CN208547386U (en) * | 2018-08-08 | 2019-02-26 | 杭州成套节流装置有限公司 | A kind of Venturi nozzle |
CN209027599U (en) * | 2018-12-07 | 2019-06-25 | 四川勤华科技有限公司 | A kind of redundant flow measuring device |
CN209589141U (en) * | 2019-03-04 | 2019-11-05 | 上海科洋科技股份有限公司 | A kind of measuring device |
CN213455639U (en) * | 2020-11-30 | 2021-06-15 | 深圳市量宇科技有限公司 | Gas flowmeter suitable for severe working conditions |
CN217716509U (en) * | 2022-05-09 | 2022-11-01 | 江阴市节流装置厂有限公司 | Synthetic gas venturi flowmeter for synthetic ammonia device adopting double-circular-arc contraction |
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Denomination of invention: Manufacturing process and measurement method of a high-precision Venturi flowmeter Granted publication date: 20240312 Pledgee: Bank of Nanjing Co.,Ltd. Changzhou Branch Pledgor: Changzhou Kewei Instrument Manufacturing Co.,Ltd. Registration number: Y2024980012877 |
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Denomination of invention: Manufacturing process and measurement method of a high-precision Venturi flowmeter Granted publication date: 20240312 Pledgee: Bank of Nanjing Co.,Ltd. Changzhou Branch Pledgor: Changzhou Kewei Instrument Manufacturing Co.,Ltd. Registration number: Y2025980007772 |
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