CN106706082A - Field service type standard meter method-based flow detection equipment - Google Patents
Field service type standard meter method-based flow detection equipment Download PDFInfo
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Abstract
本发明公开了一种现场服务型标准表法流量检测装置，包括检测单元和供水单元，其特征在于所述检测单元的进水管通过稳压系统与供水单元连接，所述检测单元设置在车体上，所述车体的上部设置有被检表固定位置以及与所述被检表固定位置对应设置的被检表进水口和被检表出水口，所述检测单元包括通过拉柱倾斜安装在检测装置机体内的标准表组，所述标准表组的进水端与进水管连接，所述标准表组的出水端通过上连接管与被检表进水口连接，被检表出水口则与设置在车体上方的出水管连接，出水管上设置调节阀。采用本发明的现场服务型标准表法流量校准装置，可在现场为企业的流量计进行检定校准，极大的减少了企业的停产时间，增加了企业的生产效率。
The invention discloses an on-site service type standard meter method flow detection device, which includes a detection unit and a water supply unit, and is characterized in that the water inlet pipe of the detection unit is connected to the water supply unit through a voltage stabilizing system, and the detection unit is arranged on the vehicle body Above, the upper part of the vehicle body is provided with a fixed position of the tested meter and a water inlet and a water outlet of the tested meter corresponding to the fixed position of the tested meter. The standard meter group in the body of the detection device, the water inlet end of the standard meter group is connected to the water inlet pipe, the water outlet end of the standard meter group is connected to the water inlet of the tested meter through the upper connecting pipe, and the water outlet of the tested meter is connected to the water inlet of the tested meter. The water outlet pipe arranged on the top of the car body is connected, and a regulating valve is arranged on the water outlet pipe. By adopting the field service type standard meter method flow calibration device of the present invention, the flow meter of the enterprise can be checked and calibrated on the spot, which greatly reduces the stoppage time of the enterprise and increases the production efficiency of the enterprise.
Description
技术领域technical field
本发明涉及流量计量设备领域，具体是一种现场服务型标准表法流量检测装置。The invention relates to the field of flow metering equipment, in particular to an on-site service type standard meter method flow detection device.
背景技术Background technique
流量计量是计量科学的重要组成部分，流量计量与测试技术在各个领域得到了广泛的应用，并推动和支持了国民经济的不断发展。它在贸易结算、能源计量、过程控制、环境保护、医药卫生等方面的检测起到了重要作用。特别是近年来随着能源和水资源的全球性匮乏，随着西气东输、南水北调等国家重点工程的启动，全社会对流量计量测试技术的要求越来越高，因此，研究和探索满足各种使用条件的流量测试技术并提高测量准确度就成为流量计量与测试工作者不懈的追求。Flow measurement is an important part of measurement science. Flow measurement and testing technology has been widely used in various fields, and has promoted and supported the continuous development of the national economy. It plays an important role in the detection of trade settlement, energy measurement, process control, environmental protection, medicine and health, etc. Especially in recent years, with the global shortage of energy and water resources, and the start of national key projects such as the West-to-East Gas Pipeline and South-to-North Water Diversion, the whole society has higher and higher requirements for flow measurement and testing technology. Therefore, research and exploration meet The flow test technology of various usage conditions and the improvement of measurement accuracy have become the relentless pursuit of flow measurement and test workers.
传统的计量装置均为固定式，且十分庞大。流量仪表计量需要将流量计全部拆下送至计量单位，检测好之后再取回，来回送取时间通常需要一到两天，再加上检测时间，最快也要一个礼拜才能重新装在生产线上使用，大大增加了企业停产时间，降低了生产效率。在线流量检测方面，将标准表串联在管道上进行标准表对比是现在主要的检测方式。这种方法首先要有足够长的直管段，对很多企业来说无法满足。并且，在线管道介质波动及周边环境等无法满足测量条件，振动等干扰因素也会对测量结果产生较大影响，使测量误差增大。同时，能带至现场的便携式超声波流量计由于其自身声波传递的衰减及管道污垢等原因，误差特别大，在实际应用过程中，超声波流量计自身检测误差是用户仪表的2至3倍，不能满足企业高精度控制要求。Traditional metering devices are all fixed and very bulky. For flow meter measurement, all the flow meters need to be dismantled and sent to the measurement unit, and then retrieved after inspection. The round-trip delivery time usually takes one to two days, plus the inspection time, it will take a week at the fastest to reinstall on the production line If it is used on the Internet, it will greatly increase the downtime of the enterprise and reduce the production efficiency. In terms of online flow detection, the main detection method is to connect the standard meter in series to the pipeline for standard meter comparison. This method must first have a long enough straight pipe section, which is unsatisfactory for many enterprises. In addition, the fluctuation of online pipeline medium and the surrounding environment cannot meet the measurement conditions, and interference factors such as vibration will also have a great impact on the measurement results, which will increase the measurement error. At the same time, the portable ultrasonic flowmeter that can be brought to the scene has a particularly large error due to the attenuation of its own sound wave transmission and pipeline dirt. In the actual application process, the detection error of the ultrasonic flowmeter itself is 2 to 3 times that of the user's instrument. Meet the high-precision control requirements of enterprises.
发明内容Contents of the invention
本发明针对上述现有技术的不足，提供了一种测量精度较高的现场服务型标准表法流量检测装置。The present invention aims at the deficiencies of the above-mentioned prior art, and provides an on-site service type standard meter method flow detection device with high measurement accuracy.
为达到上述目的，本发明采用下述技术方案：一种现场服务型标准表法流量检测装置，包括检测单元、供水单元和稳压单元，其特征在于所述现场服务型标准表法流量检测装置为移动式的，稳压系统通过软管连接置于检测单元和供水单元之间，供水单元通过变频调节水流大小，水流经变频稳定后进入稳压系统进行稳定形成稳定水流源，供检测装置检测使用。In order to achieve the above object, the present invention adopts the following technical solutions: a field service type standard meter method flow detection device, including a detection unit, a water supply unit and a voltage stabilizing unit, characterized in that the field service type standard meter method flow detection device It is mobile, and the voltage stabilization system is placed between the detection unit and the water supply unit through a hose connection. The water supply unit adjusts the size of the water flow through frequency conversion. After the water flow is stabilized by frequency conversion, it enters the voltage stabilization system to stabilize and form a stable water flow source for detection by the detection device. use.
根据本发明的优选实施例，所述检测单元设置在车体上，所述车体的上部设置有被检表固定位置以及与所述被检表固定位置对应设置的被检表进水口和被检表出水口，所述检测单元包括通过拉柱倾斜安装在检测装置机体内的标准表组，所述标准表组的进水端与进水管连接，所述标准表组的出水端通过上连接管与被检表进水口连接，被检表出水口则与设置在车体上方的出水管连接，出水管上设置调节阀，位于车体的下端靠近标准表的位置设置震动传感器，震动传感器的输出端与控制柜连接，震动传感器用来测量测试装置的震动频率，测得的频率在控制柜的显示单元显示，当测试装置的震动加速度超过设定值时，发出报警。According to a preferred embodiment of the present invention, the detection unit is arranged on the vehicle body, and the upper part of the vehicle body is provided with a fixed position of the tested meter and a water inlet of the tested meter corresponding to the fixed position of the tested meter. The water outlet of the meter detection unit, the detection unit includes a standard meter group installed obliquely in the body of the detection device through a pull column, the water inlet end of the standard meter group is connected to the water inlet pipe, and the water outlet end of the standard meter group is connected through the upper The pipe is connected to the water inlet of the tested meter, and the water outlet of the tested meter is connected to the water outlet pipe arranged above the car body. A regulating valve is installed on the water outlet pipe, and a vibration sensor is installed at the lower end of the car body near the standard meter. The output end is connected to the control cabinet, and the vibration sensor is used to measure the vibration frequency of the test device. The measured frequency is displayed on the display unit of the control cabinet. When the vibration acceleration of the test device exceeds the set value, an alarm is issued.
根据本发明的优选实施例，检测单元、供水单元以及稳压系统均装有轮子，稳压系统通过软管连接置于检测单元和供水单元之间。According to a preferred embodiment of the present invention, the detection unit, the water supply unit and the pressure stabilization system are equipped with wheels, and the pressure stabilization system is placed between the detection unit and the water supply unit through a hose connection.
根据本发明的优选实施例，上连接管的上端安装有观察窗，方便观察水流是否满管。According to a preferred embodiment of the present invention, an observation window is installed on the upper end of the upper connecting pipe, so that it is convenient to observe whether the water flow is full of the pipe.
根据本发明的优选实施例，所述出水管的上方设置有温度传感器和压力传感器，所述温度传感器和压力传感器均与控制柜连接，调节阀配有调节时观察流量的玻璃转子流量计。According to a preferred embodiment of the present invention, a temperature sensor and a pressure sensor are arranged above the outlet pipe, and both the temperature sensor and the pressure sensor are connected to the control cabinet, and the regulating valve is equipped with a glass rotameter for observing the flow rate during regulation.
根据本发明的优选实施例，环境温湿度传感器位于车体的下端，环境温湿度传感器的输出端与控制柜连接，测得温湿度在控制柜的显示单元显示，以保证环境温湿度在国家规程规定的范围内。According to a preferred embodiment of the present invention, the environment temperature and humidity sensor is located at the lower end of the car body, the output end of the environment temperature and humidity sensor is connected with the control cabinet, and the measured temperature and humidity are displayed on the display unit of the control cabinet to ensure that the environment temperature and humidity meet the national regulations within the specified range.
根据本发明的优选实施例根据本发明的优选实施例，上连接管和出水管顶端分别安装进气阀，利于管道排水。According to a preferred embodiment of the present invention, according to a preferred embodiment of the present invention, inlet valves are respectively installed on the top of the upper connecting pipe and the outlet pipe, which is beneficial to the drainage of the pipes.
根据本发明的优选实施例，所述检测装置的车体，被检表固定位置为下凹的圆弧形结构，这样可以更好地固定被检表。According to a preferred embodiment of the present invention, on the vehicle body of the detection device, the fixed position of the checked meter is a concave arc-shaped structure, which can better fix the checked meter.
根据本发明的优选实施例，在出水管与被检表连接的部位，增设了水流收集槽，这样可以避免在拆除被检表的过程中，有遗留的水直接流在检测装置上。According to the preferred embodiment of the present invention, a water flow collection tank is added at the part where the water outlet pipe is connected to the meter to be checked, so as to prevent the remaining water from flowing directly on the testing device during the process of removing the meter to be checked.
根据本发明的优选实施例，所述进水管位于车体下端，所述标准表组的进水端通过下连接管与进水管连接，所述下连接管上设置有三片阀，利用三片阀的开断控制标准表水流的通断。According to a preferred embodiment of the present invention, the water inlet pipe is located at the lower end of the car body, and the water inlet end of the standard meter group is connected to the water inlet pipe through a lower connecting pipe, and a three-piece valve is arranged on the lower connecting pipe, and the three-piece valve is used to The on-off control of the standard meter water flow.
本发明在检测单元与供水装置之间增设稳压系统，所述稳压系统的作用是使水箱里的水进稳压罐稳定后进标准表和被检表，使两表流过的水流一致，这样可以比较两个表的示值差，因此可以提高流量检测装置的检测精度。且本发明的检测单元、供水单元以及稳压系统均装有轮子，稳压系统通过软管连接置于检测单元和供水单元之间，方便携带至现场。供水单元通过变频调节水流大小，水流经变频稳定后进入稳压系统进行稳定形成稳定水流源，供检测装置检测使用，达到标准表法流量标准装置规程的要求，可搬运至现场为企业的流量计进行检定校准。本发明的优点在于采用本发明的现场服务型标准表法流量校准装置，可在现场为企业的流量计进行检定校准，极大的减少了企业的停产时间，增加了企业的生产效率。In the present invention, a voltage stabilizing system is added between the detection unit and the water supply device. The function of the voltage stabilizing system is to make the water in the water tank enter the stabilizing tank stably and then enter the standard meter and the meter to be checked, so that the water flows through the two meters are consistent. In this way, the indication difference of the two meters can be compared, so the detection accuracy of the flow detection device can be improved. In addition, the detection unit, the water supply unit and the voltage stabilizing system of the present invention are all equipped with wheels, and the voltage stabilizing system is placed between the detection unit and the water supply unit through a hose connection, which is convenient to carry to the scene. The water supply unit adjusts the size of the water flow through frequency conversion. After the water flow is stabilized by frequency conversion, it enters the voltage stabilization system to stabilize and form a stable water flow source, which is used for detection by the detection device and meets the requirements of the standard flow standard device regulations of the standard meter method. Perform verification calibration. The advantage of the present invention is that the on-site service type standard meter method flow calibration device of the present invention can perform verification and calibration for the flowmeter of the enterprise on site, which greatly reduces the production stop time of the enterprise and increases the production efficiency of the enterprise.
附图说明Description of drawings
图1为本发明的一种现场服务型标准表法流量检测装置结构示意图。Fig. 1 is a schematic structural diagram of an on-site service standard meter method flow detection device of the present invention.
图2为检测单元的结构示意图。Fig. 2 is a schematic structural diagram of the detection unit.
图3为供水单元的结构示意图。Fig. 3 is a schematic structural diagram of the water supply unit.
具体实施方式detailed description
下面结合附图，给出本发明的较佳实施例，并予以详细描述，使能更好地理解本发明的功能、特点。Below, in conjunction with the accompanying drawings, preferred embodiments of the present invention are given and described in detail, so that the functions and features of the present invention can be better understood.
如图1所示，一种现场服务型标准表法流量检测装置，包括：检测装置A、供水装置C和稳压系统B。本发明在检测单元与供水装置之间增设稳压系统，所述稳压系统的作用是使水箱里的水进稳压罐稳定后进标准表和被检表，使两表流过的水流一致，这样可以比较两个表的示值差，因此可以提高流量检测装置的检测精度。As shown in Figure 1, a field service type standard meter flow detection device includes: a detection device A, a water supply device C and a pressure stabilization system B. In the present invention, a voltage stabilizing system is added between the detection unit and the water supply device. The function of the voltage stabilizing system is to make the water in the water tank enter the stabilizing tank stably and then enter the standard meter and the meter to be checked, so that the water flows through the two meters are consistent. In this way, the indication difference of the two meters can be compared, so the detection accuracy of the flow detection device can be improved.
如图2所示，所述检测装置A包括进水管1、下连接管2、车体3、套筒架4、温度传感器5、压力传感器6、调节阀7、出水管8、进气阀9、上连接管10、观察窗11、控制柜12、车轮13、卫生接头14、标准表组15、拉柱16、环境温度传感器17、三片阀18、震动传感器19。所述进水管1位于车体3下端，通过卫生接头14与标准表组15相连，另一端与稳压系统B相连，利用三片阀18的开断控制标准表水流的通断。标准表组15倾斜安装在检测装置A机体内，往上通过卫生接头14与上连接管10相连，并由拉柱16固定在车体3上。观察窗11安装在上连接管10的另一端，方便观察水流是否满管。温度传感器5和压力传感器6固定在出水管8的上方。所述标准表组由三个口径大小不同的标准表组成，所述被检表固定位置对应设置三组被检表进水口和被检表出水口，每组被检表进水口与对应的一个标准表连接，每组被检表出水口则通过一路出水管与出水总管连接，每一路出水管上分别设置一个调节阀7，每个调节阀7均配有调节时观察流量的玻璃转子流量计。上连接管10和出水管8顶端分别安装进气阀9，利于管道排水。进水管1上安装排水阀20。控制柜12安装在检测装置A的车体3内。环境温度传感器17和震动传感器19位于车体3的下端靠近标准表的位置。As shown in Figure 2, the detection device A includes a water inlet pipe 1, a lower connecting pipe 2, a vehicle body 3, a sleeve holder 4, a temperature sensor 5, a pressure sensor 6, a regulating valve 7, an outlet pipe 8, and an air intake valve 9 , Upper connecting pipe 10, observation window 11, control cabinet 12, wheels 13, sanitary joint 14, standard meter group 15, pull column 16, ambient temperature sensor 17, three-piece valve 18, vibration sensor 19. The water inlet pipe 1 is located at the lower end of the car body 3, and is connected to the standard meter group 15 through a sanitary joint 14, and the other end is connected to the voltage stabilizing system B, and the on-off of the standard meter water flow is controlled by the opening and closing of the three-piece valve 18. The standard meter group 15 is obliquely installed in the body of the detection device A, upwardly connected with the upper connecting pipe 10 through the sanitary joint 14, and fixed on the car body 3 by the pull column 16. The observation window 11 is installed on the other end of the upper connecting pipe 10, so that it is convenient to observe whether the water flow is full. The temperature sensor 5 and the pressure sensor 6 are fixed above the water outlet pipe 8 . The standard meter group is composed of three standard meters with different calibers. The fixed position of the tested meter corresponds to three groups of water inlets and outlets of the tested meter. Each group of water inlets of the tested meter is connected to a corresponding one. The standard meter is connected, and the water outlet of each group of tested meters is connected to the main water outlet through a water outlet pipe. A regulating valve 7 is installed on each water outlet pipe, and each regulating valve 7 is equipped with a glass rotameter for observing the flow rate during adjustment. . Air intake valve 9 is installed respectively on the top of connecting pipe 10 and outlet pipe 8, which is beneficial to pipeline drainage. A drain valve 20 is installed on the water inlet pipe 1 . The control cabinet 12 is installed in the vehicle body 3 of the detection device A. Ambient temperature sensor 17 and vibration sensor 19 are positioned at the lower end of vehicle body 3 near the position of standard meter.
震动传感器的输出端与控制柜连接，震动传感器用来测量测试装置的震动频率，测得的频率在控制柜的显示单元显示，当测试装置的震动频率超过设定值时，发出报警，此时需调节测试装置，使得测试装置的震动频率在规定的范围内。经过试验表明，当测试装置的震动频率达到(10～150)Hz时，会影响标准表正常工作，因此当震动传感器测试到测试装置的震动频率达到影响标准表正常工作频率(10～150)Hz时，发出报警。The output end of the vibration sensor is connected to the control cabinet. The vibration sensor is used to measure the vibration frequency of the test device. The measured frequency is displayed on the display unit of the control cabinet. When the vibration frequency of the test device exceeds the set value, an alarm is issued. At this time The test device needs to be adjusted so that the vibration frequency of the test device is within the specified range. Tests have shown that when the vibration frequency of the test device reaches (10-150) Hz, it will affect the normal operation of the standard meter. Therefore, when the vibration sensor detects that the vibration frequency of the test device reaches (10-150) Hz, it will affect the normal working frequency of the standard meter. , an alarm is issued.
根据本发明的优选实施例，标准表组(质量流量计)的抗震性要求为：加速度小于1g。通过震动传感器检测到的测试装置的震动频率f和震动幅值Y，计算震动加速度G(G|max＝0.004Yf2)，当G|max数值大于1g时，发出报警，此时需要采取相应调整措施，使测试装置的震动保持在震动范围内。According to a preferred embodiment of the present invention, the shock resistance requirement of the standard meter group (mass flow meter) is: the acceleration is less than 1g. Calculate the vibration acceleration G (G| max = 0.004Yf 2 ) through the vibration frequency f and vibration amplitude Y of the test device detected by the vibration sensor. When the G| max value is greater than 1g, an alarm is issued, and corresponding adjustments are required at this time Measures to keep the vibration of the test device within the vibration range.
所述稳压系统将供水装置的水经过稳压后流经检测装置的标准表组，被检表，经过调节阀后回到供水装置的水箱，标准表组(15)的数据Qs和被检表数据Qm通过数据线进入控制柜，可得被检表相对误差 The pressure stabilizing system flows through the standard meter group of the detection device after the water of the water supply device has been stabilized, and the meter to be tested returns to the water tank of the water supply device after passing through the regulating valve, and the data Q s of the standard meter group (15) and the measured meter The inspected meter data Q m enters the control cabinet through the data line, and the relative error of the inspected meter can be obtained
如图3所示，所述供水单元C包括：车轮13、弯头连接管21、水箱22、过滤网23、截止阀24、变频电机25、水泵连接管26、溢流阀27、供水装置控制箱28。过滤网23设置在水箱22内，在供水装置控制箱28控制下，水箱22出水经水泵连接管26流入稳压系统B。As shown in Figure 3, the water supply unit C includes: wheels 13, elbow connecting pipe 21, water tank 22, filter screen 23, stop valve 24, frequency conversion motor 25, water pump connecting pipe 26, overflow valve 27, water supply device control Box 28. The filter screen 23 is arranged in the water tank 22 , and under the control of the water supply device control box 28 , the outlet water of the water tank 22 flows into the pressure stabilizing system B through the water pump connecting pipe 26 .
所述现场服务型标准表法流量检测装置的时间频率和数据处理软件事先经过计量，时间频率和数据处理软件都配有验证接口。The time frequency and data processing software of the on-site service standard meter flow detection device have been measured in advance, and the time frequency and data processing software are equipped with verification interfaces.
所述标准表组由三个口径大小不同的标准表组成，工作时具体选用的标准表口径大小由被检表决定。所述标准表与被检表串联。供水单元C通过变频调节水流大小，水流经变频稳定后进入稳压系统B进行稳定形成稳定水流源，供检测装置A使用。可移动检测装置A用标准表组15的标准数据和被检表数据进行比对得到被检表误差。所述稳压系统的作用是使水箱里的水进稳压罐稳定后进标准表和被检表，使两表流过的水流一致，这样可以比较两个表的示值差。进而进行被检表的计量校准工作。The standard watch group is composed of three standard watches with different calibers, and the caliber of the standard watch selected during work is determined by the checked watch. The standard table is connected in series with the checked table. The water supply unit C adjusts the size of the water flow through frequency conversion. After the water flow is stabilized by the frequency conversion, it enters the voltage stabilization system B to stabilize and form a stable water flow source for use by the detection device A. The movable detection device A compares the standard data of the standard meter group 15 with the data of the checked meter to obtain the error of the checked meter. The function of the pressure stabilizing system is to make the water in the water tank enter the pressure stabilizing tank stably and then enter the standard meter and the meter to be checked, so that the water flows through the two meters are consistent, so that the difference between the indications of the two meters can be compared. Then carry out the measurement and calibration work of the tested meter.
检测单元A、供水单元C以及通过软管连接置于检测单元A和供水单元C之间的稳压系统B均装有轮子，方便携带至现场。The detection unit A, the water supply unit C, and the pressure stabilization system B placed between the detection unit A and the water supply unit C through a hose connection are all equipped with wheels for easy portability to the site.
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