CN104359521A - Large-capacity storage tank volume detection system and calibration method - Google Patents
Large-capacity storage tank volume detection system and calibration method Download PDFInfo
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Abstract
本发明提供一种大容量储罐容积检测系统及标定方法。其中储罐一的出水管路、储罐二的出水管路和储罐三的出水管路均连接至循环增压输送泵组的入口；循环增压输送泵组的出口通过管路连接稳压装置的入口，稳压装置的出口通过管路连接标准表流量计组的入口，标准表流量计组的出口通过管路连接流量调节装置的入口；流量调节装置的出口管路分为四个支路分别连接储罐一的进水管路、储罐二的进水管路和储罐三的进水管路以及流量计校验标准装置的进水管路；流量计校验标准装置设置独立的液源系统，其出水管路连接循环增压输送泵组的入口。本发明适应性强，测量误差小，使得系统流量计量能力得到极大的提高。
The invention provides a large-capacity storage tank volume detection system and a calibration method. Among them, the water outlet pipeline of storage tank 1, the water outlet pipeline of storage tank 2 and the water outlet pipeline of storage tank 3 are all connected to the inlet of the circulation booster delivery pump set; the outlet of the circulation booster delivery pump set is connected to the stable pressure The inlet of the device and the outlet of the pressure stabilizing device are connected to the inlet of the standard meter flowmeter group through pipelines, and the outlet of the standard meter flowmeter group is connected to the inlet of the flow regulating device through pipelines; the outlet pipeline of the flow regulating device is divided into four branches The water inlet pipeline of storage tank 1, the water inlet pipeline of storage tank 2, the water inlet pipeline of storage tank 3 and the water inlet pipeline of the flowmeter calibration standard device are connected respectively; the flowmeter calibration standard device is equipped with an independent liquid source system , and its outlet pipe is connected to the inlet of the circulating booster delivery pump group. The invention has strong adaptability and small measurement error, so that the flow metering capability of the system is greatly improved.
Description
技术领域technical field
本发明属于计量测试技术领域，具体涉及一种大容量储罐容积检测系统及标定方法。The invention belongs to the technical field of metering and testing, and in particular relates to a large-capacity storage tank volume detection system and a calibration method.
背景技术Background technique
目前，大容量储罐的使用范围逐渐遍布石油化工、航天等各个领域，而人们有时不仅关注其存储量的大小，更关注储罐(箱)内盛放介质时不同液位高度下对应的容积的多少。也就是说，通常意义上的大容量储罐只用来存放介质已远远不能满足科研生产的实际需要，而将储罐进行容积标定后使之具有计量属性，或根据其不同液位高度下的容积值做出科学判断才是当今大容量储罐的发展趋势。At present, the scope of use of large-capacity storage tanks is gradually spreading in various fields such as petrochemical industry and aerospace, and people sometimes not only pay attention to the size of their storage capacity, but also pay more attention to the volume corresponding to different liquid levels when the medium is contained in the storage tank (box) how much. That is to say, the large-capacity storage tanks in the usual sense are only used to store media, which is far from meeting the actual needs of scientific research and production. After the volume of the storage tank is calibrated to make it have metering properties, or according to its different liquid levels It is the development trend of today's large-capacity storage tanks to make scientific judgments about the volume value.
在航天技术领域，通常关注贮箱几个特征液位处的燃料容积。目前，火箭贮箱的容积标定一般采用整体称重法，即通过特制工装设备在箱体检测系统底部安装大量程的称重传感器，通过控制贮箱内测量介质的液位进而获得箱体几个特征液位处的液体质量，再经过温度-密度修正得出液位-容积对应表。一般情况下，该称重系统至少需要3个称重传感器。而为保证容积检测的准确性，称重传感器需要定期校验。由于多个称重传感器联合工作时对安装的一致性要求甚高，故称重传感器校验后重新安装工作难度大，更不便于传感器现场校验，况且对于大质量称重传感器无法采用直接荷载法校验，精度不能得到保证。In the field of aerospace technology, the fuel volume at several characteristic liquid levels of the tank is usually concerned. At present, the volume calibration of rocket storage tanks generally adopts the overall weighing method, that is, a large-scale load cell is installed at the bottom of the tank detection system through special tooling equipment, and the number of tanks is obtained by controlling the liquid level of the measurement medium in the tank. The liquid mass at the characteristic liquid level is then corrected by temperature-density to obtain the liquid level-volume correspondence table. In general, the weighing system requires at least 3 load cells. In order to ensure the accuracy of volume detection, the load cell needs to be checked regularly. Due to the high requirements for the consistency of installation when multiple load cells work together, it is difficult to reinstall the load cell after calibration, and it is not convenient for the sensor to be calibrated on site. Moreover, direct load cannot be used for large-mass load cells. accuracy cannot be guaranteed.
在石油化工行业中，通常关注储罐不同液位处存放油品的容积。目前，国家标准已制订了相关立式圆柱形金属油罐的容积标定方法，如围尺法(GB/T 13235.1-1991)、光学参比线法(GB/T 13235.2-1991)和光电内测距法(GB/T 13235.3-1995)。上述几种方法均是通过测量圆柱形储罐不同圈板的周长、角度等几何量，然后通过实测数据进行计算进而获得油罐容积表。当然，在石化行业还出现了应用现代全球卫星定位系统实时动态差分定位技术进行容积检测和标定的方法。In the petrochemical industry, the volume of oil stored at different liquid levels in storage tanks is usually concerned. At present, the national standards have formulated the volume calibration methods of relevant vertical cylindrical metal oil tanks, such as the girth method (GB/T 13235.1-1991), the optical reference line method (GB/T 13235.2-1991) and the photoelectric internal measurement Distance method (GB/T 13235.3-1995). The above-mentioned methods all measure geometric quantities such as the perimeter and angle of different ring plates of a cylindrical storage tank, and then calculate through the measured data to obtain the tank volume table. Of course, in the petrochemical industry, there is also a method of volume detection and calibration using modern global satellite positioning system real-time dynamic differential positioning technology.
综上所述，目前应用于大容量储罐(箱)容积检测和标定方法存在以下不足：(1)检测传感器无法实时校验，测量结果不确定度无法保证；(2)适用范围小，仅适用于某些固定的场合或者是固定外形的容器；(3)操作过程复杂，对操作人员的熟练程度要求较高。To sum up, the current volume detection and calibration methods applied to large-capacity storage tanks (boxes) have the following shortcomings: (1) The detection sensor cannot be calibrated in real time, and the uncertainty of the measurement results cannot be guaranteed; (2) The scope of application is small, only It is suitable for certain fixed occasions or containers with fixed shapes; (3) The operation process is complicated and requires a high level of proficiency for operators.
发明内容Contents of the invention
本发明的目的在于提供一种适应性强、操作简单、测量精度高的适用于大容量储罐现场容积检测系统和标定方法。The purpose of the present invention is to provide an on-site volume detection system and calibration method for large-capacity storage tanks with strong adaptability, simple operation and high measurement accuracy.
实现本发明目的的技术方案：一种大容量储罐容积检测系统，其包括储罐一、储罐二和储罐三；储罐一、储罐二和储罐三的下部均设置进水和出水管路，同时储罐一、储罐二和储罐三顶部均安装有液位计；The technical solution for realizing the purpose of the present invention: a large-capacity storage tank volume detection system, which includes storage tank one, storage tank two and storage tank three; the lower parts of storage tank one, storage tank two and storage tank three are all provided with water inlet and Outlet pipelines, and liquid level gauges are installed on the top of storage tank 1, storage tank 2 and storage tank 3;
其中，储罐一的出水管路、储罐二的出水管路和储罐三的出水管路均连接至循环增压输送泵组的入口；循环增压输送泵组的出口通过管路连接至稳压装置的入口，稳压装置的出口通过管路连接至标准表流量计组的入口，标准表流量计组的出口通过管路连接至流量调节装置的入口；流量调节装置的出口管路分为四个支路，分别连接储罐一的进水管路、储罐二的进水管路和储罐三的进水管路，另外一路连接至流量计校验标准装置；流量计校验标准装置设置独立的液源系统，其液源的出水管路连接循环增压输送泵组的入口。Among them, the water outlet pipeline of storage tank 1, the water outlet pipeline of storage tank 2 and the water outlet pipeline of storage tank 3 are all connected to the inlet of the circulation booster delivery pump set; the outlet of the circulation booster delivery pump set is connected to the The inlet of the pressure stabilizing device, the outlet of the stabilizing device is connected to the inlet of the standard meter flowmeter group through the pipeline, and the outlet of the standard meter flowmeter group is connected to the inlet of the flow regulating device through the pipeline; the outlet pipeline of the flow regulating device is divided into It is four branches, respectively connected to the water inlet pipeline of storage tank 1, the water inlet pipeline of storage tank 2 and the water inlet pipeline of storage tank 3, and the other one is connected to the flowmeter calibration standard device; the flowmeter calibration standard device is set An independent liquid source system, the outlet pipe of the liquid source is connected to the inlet of the circulating booster delivery pump group.
如上所述的一种大容量储罐容积检测系统，其所述的循环增压输送泵组包括2～3台离心增压泵并联组成，配置相应的控制阀门。According to the above-mentioned large-capacity storage tank volume detection system, the circulating booster delivery pump set includes 2 to 3 centrifugal booster pumps connected in parallel, and corresponding control valves are configured.
如上所述的一种大容量储罐容积检测系统，其所述的标准表流量计组包括2台或多台流量计并联组成，设置压力、温度仪表，每台流量计均设对应脉冲计数装置；通过控制阀门的开关实现1台或多台流量计使用。A large-capacity storage tank volume detection system as described above, the standard meter flowmeter group consists of two or more flowmeters connected in parallel, equipped with pressure and temperature instruments, and each flowmeter is equipped with a corresponding pulse counting device ; Realize the use of one or more flowmeters by controlling the switch of the valve.
如上所述的一种大容量储罐容积检测系统，其所述的稳压装置采用稳压罐。According to the volume detection system of a large-capacity storage tank as described above, the pressure stabilizing device adopts a pressure stabilizing tank.
如上所述的一种大容量储罐容积检测系统，其所述的流量调节装置采用调节阀门。According to the volume detection system of a large-capacity storage tank as described above, the flow regulating device adopts a regulating valve.
如上所述的一种大容量储罐容积检测系统，其所述的储罐一的出水管路、储罐二的出水管路、储罐三的出水管路、储罐一的进水管路、储罐二的进水管路、储罐三的进水管路、流量计校验标准装置的出水管路、流量计校验标准装置的进水管路上均设置控制阀门。A large-capacity storage tank volume detection system as described above, the water outlet pipeline of storage tank 1, the water outlet pipeline of storage tank 2, the water outlet pipeline of storage tank 3, the water inlet pipeline of storage tank 1, Control valves are set on the water inlet pipeline of storage tank 2, the water inlet pipeline of storage tank 3, the outlet pipeline of the flowmeter calibration standard device, and the water inlet pipeline of the flowmeter calibration standard device.
本发明所述任意一种大容量储罐容积检测系统的大容量储罐容积标定方法，其包括如下步骤：The method for calibrating the volume of a large-capacity storage tank in any one of the large-capacity storage tank volume detection systems of the present invention comprises the following steps:
(a)当储罐二为被标定对象时，储罐一和储罐三提供液源；当储罐一为标定对象时，储罐二和储罐三提供液源；当储罐三为标定对象时，储罐一和储罐二提供液源；标定开始时，被标定对象储罐的储液为空，同时确保其余2个储罐的储液容量之和大于被标定对象容积值；(a) When storage tank 2 is the object to be calibrated, storage tank 1 and storage tank 3 provide the liquid source; when storage tank 1 is the calibration object, storage tank 2 and storage tank 3 provide the liquid source; when storage tank 3 is the calibration object When testing, storage tank 1 and storage tank 2 provide liquid sources; at the beginning of calibration, the storage tank of the calibrated object storage tank is empty, and at the same time ensure that the sum of the storage capacity of the remaining 2 storage tanks is greater than the volume value of the calibrated object;
(b)启动循环增压输送泵组，控制各控制阀门启闭，使得液源内的液体介质依次流过循环增压输送泵组、稳压装置、标准表流量计组和流量计校验标准装置；待流量计校验标准装置液源储液情况满足要求时，开始循环运行，然后按照流量计检定规程对标准表流量计组进行流量值校验；(b) Start the circulating pressurized conveying pump set, control the opening and closing of each control valve, so that the liquid medium in the liquid source flows through the circulating pressurized conveying pump set, the pressure stabilizing device, the standard meter flowmeter set and the flowmeter calibration standard device in sequence ;When the liquid source and storage conditions of the flowmeter calibration standard device meet the requirements, the cycle operation is started, and then the flow value of the standard meter flowmeter group is verified according to the flowmeter verification regulations;
(c)对被标定对象储罐进行液位置零；控制各控制阀门启闭，使得液源内的液体介质依次流过循环增压输送泵组、稳压装置、标准表流量计组后进入待标定储罐；标定过程中，选取步骤(b)中校验过的流量值进行加注，生成储罐容积与液位高度对应表，直至结束一个被标定对象储罐的容积检测。(c) Zero the liquid position of the storage tank to be calibrated; control the opening and closing of each control valve, so that the liquid medium in the liquid source flows through the circulating booster delivery pump group, the pressure stabilizing device, and the standard meter flowmeter group in sequence, and then enters the calibration to be calibrated Storage tank: During the calibration process, select the flow value verified in step (b) for filling, generate a storage tank volume and liquid level height correspondence table, until the volume detection of a calibrated object storage tank is completed.
如上所述的一种大容量储罐容积标定方法，其所述的储罐一、储罐二和储罐三容积为100～1000m3。According to the above-mentioned method for calibrating the volume of a large-capacity storage tank, the volumes of the first storage tank, the second storage tank and the third storage tank are 100-1000m 3 .
本发明的效果在于：本发明所述的大容量储罐容积检测系统及标定方法，其适应性强，测量误差小。由于引入了流量计的并/串连控制模式，使得系统的流量计量能力得到极大的提高。基于系统的特点，容积检测过程使用的工作介质就是实际的存储介质，这样不仅可以就地取材，还对容积标定的准确性有了保证作用。此外，由于采用流量计量法，罐体可以是传统的圆柱形、球型、卧式等，亦可以是根据现场需要特殊设计的任何形式。本发明不仅适用于火箭燃料贮箱的容积现场检测和标定，同时适用于石油化工行业大型储罐容积表的编制，特别适用于对标定不确定度要求高的场合。The effect of the present invention is that: the large-capacity storage tank volume detection system and the calibration method of the present invention have strong adaptability and small measurement error. Due to the introduction of the parallel/serial control mode of the flowmeter, the flow measurement capability of the system has been greatly improved. Based on the characteristics of the system, the working medium used in the volume detection process is the actual storage medium, which can not only obtain local materials, but also guarantee the accuracy of volume calibration. In addition, due to the flow measurement method, the tank body can be traditional cylindrical, spherical, horizontal, etc., or any form specially designed according to the needs of the site. The invention is not only suitable for on-site detection and calibration of the volume of rocket fuel storage tanks, but also suitable for the compilation of volume tables of large storage tanks in the petrochemical industry, and is especially suitable for occasions requiring high calibration uncertainty.
附图说明Description of drawings
图1为本发明所述的一种大容量储罐容积检测系统示意图。Fig. 1 is a schematic diagram of a large-capacity storage tank volume detection system according to the present invention.
图中：1.储罐一；2.循环增压输送泵组；3.稳压装置；4.标准表流量计组；5.流量计校验标准装置；6.循环储箱；7.流量调节装置；8.储罐二；9.储罐三。In the figure: 1. Storage tank 1; 2. Circulating pressurized delivery pump group; 3. Pressure stabilizing device; 4. Standard meter flowmeter group; 5. Flowmeter calibration standard device; 6. Circulating storage tank; 7. Flow rate Adjusting device; 8. Storage tank two; 9. Storage tank three.
具体实施方式Detailed ways
下面结合附图和具体实例对本发明所述的一种大容量储罐容积检测系统及标定方法作进一步描述。A volume detection system and calibration method for a large-capacity storage tank according to the present invention will be further described below in conjunction with the accompanying drawings and specific examples.
实施例1Example 1
如图1所示，本发明所述的一种大容量储罐容积检测系统，其包括三个储罐，分别为储罐一1、储罐二8和储罐三9；所述的储罐一1、储罐二8和储罐三9容积为100～1000m3(理论上可任意大小)。储罐一1、储罐二8和储罐三9顶部均安装有液位计。As shown in Figure 1, a large-capacity storage tank volume detection system according to the present invention includes three storage tanks, which are respectively storage tank one 1, storage tank two 8 and storage tank three 9; 1. Storage tank 2 8 and storage tank 3 9 have a volume of 100-1000m 3 (any size is theoretically possible). Liquid level gauges are installed on the tops of storage tank one 1, storage tank two 8 and storage tank three 9.
储罐一1、储罐二8和储罐三9的下部左侧均连接出水管路、下部右侧均连接进水管路；The lower left side of storage tank 1, storage tank 2 8 and storage tank 3 9 are all connected to the water outlet pipeline, and the lower right side is connected to the water inlet pipeline;
其中，储罐一1的出水管路、储罐二8的出水管路和储罐三9的出水管路均连接至循环增压输送泵组2的入口；Wherein, the water outlet pipeline of storage tank one 1, the water outlet pipeline of storage tank two 8 and the water outlet pipeline of storage tank three 9 are all connected to the inlet of circulating pressurized conveying pump group 2;
循环增压输送泵组2的出口通过管路连接稳压装置3的入口，稳压装置3的出口通过管路连接标准表流量计组4的入口，标准表流量计组4的出口通过管路连接流量调节装置7的入口；The outlet of the circulating pressurized delivery pump group 2 is connected to the inlet of the pressure stabilizing device 3 through a pipeline, the outlet of the pressure stabilizing device 3 is connected to the inlet of the standard meter flowmeter group 4 through a pipeline, and the outlet of the standard meter flowmeter group 4 is connected through a pipeline Connect the inlet of the flow regulating device 7;
流量调节装置7的出口管路分为四个支路分别连接储罐一1的进水管路、储罐二8的进水管路和储罐三9的进水管路以及流量计校验标准装置5的进水管路；流量计校验标准装置5设置独立的液源系统，其出水管路连接循环增压输送泵组2的入口。The outlet pipeline of the flow regulating device 7 is divided into four branches respectively connected to the water inlet pipeline of storage tank 1, the water inlet pipeline of storage tank 2 8, the water inlet pipeline of storage tank 3 9 and the flowmeter calibration standard device 5 The water inlet pipeline; the flowmeter calibration standard device 5 is provided with an independent liquid source system, and its outlet pipeline is connected to the inlet of the circulating booster delivery pump group 2.
上述循环增压输送泵组2包括2台(或3台)离心增压泵并联组成，配置相应控制阀门。The above-mentioned circulating booster delivery pump group 2 is composed of 2 (or 3) centrifugal booster pumps connected in parallel and equipped with corresponding control valves.
上述标准表流量计组4包括2台(或多台)流量计并联组成，设置压力、温度仪表，每台流量计均设对应脉冲计数装置；通过控制阀门的开关实现1台或多台流量计使用。The above-mentioned standard meter flowmeter group 4 consists of two (or more) flowmeters connected in parallel, with pressure and temperature instruments, and each flowmeter is equipped with a corresponding pulse counting device; one or more flowmeters can be realized by controlling the valve switch. use.
上述稳压装置3采用稳压罐。稳压罐有效容积根据系统设计最大流量而定，其有效容积一般以最大流量值(按立方米/时计)的1/50(或1/40)为宜。The above-mentioned voltage stabilizing device 3 adopts a voltage stabilizing tank. The effective volume of the surge tank is determined according to the maximum flow rate of the system design, and its effective volume is generally 1/50 (or 1/40) of the maximum flow value (in cubic meters/hour).
上述流量调节装置7采用调节阀。The above-mentioned flow regulating device 7 adopts a regulating valve.
上述储罐一1的出水管路、储罐二8的出水管路、储罐三9的出水管路、储罐一1的进水管路、储罐二8的进水管路、储罐三9的进水管路、流量计校验标准装置5的出水管路、流量计校验标准装置5的进水管路上均设置控制阀门。The water outlet pipeline of the above-mentioned storage tank one 1, the water outlet pipeline of the storage tank two 8, the water outlet pipeline of the storage tank three 9, the water inlet pipeline of the storage tank one 1, the water inlet pipeline of the storage tank two 8, the storage tank three 9 Control valves are all arranged on the water inlet pipeline of the flowmeter calibration standard device 5, the water outlet pipeline of the flowmeter calibration standard device 5, and the water inlet pipeline of the flowmeter calibration standard device 5.
实施例2Example 2
本发明所述的一种采用实施例1所述的大容量储罐容积检测系统的大容量储罐容积标定方法，其包括如下步骤：A method for calibrating the volume of a large-capacity storage tank using the volume detection system for a large-capacity storage tank described in Embodiment 1 of the present invention comprises the following steps:
(a)当储罐二8为被标定对象时，储罐一1和储罐三9提供液源；当储罐一1为标定对象时，储罐二8和储罐三9提供液源；当储罐三9为标定对象时，储罐一1和储罐二8提供液源；(a) When storage tank two 8 is the object to be calibrated, storage tank one 1 and storage tank three 9 provide liquid sources; when storage tank one 1 is the calibration object, storage tank two 8 and storage tank three 9 provide liquid sources; When storage tank three 9 is the calibration object, storage tank one 1 and storage tank two 8 provide liquid sources;
标定启动时，被标定对象储罐的储液为空，同时确保其余2个储罐的储液容量之和大于被标定对象容积值。When the calibration starts, the storage tank of the calibrated object storage tank is empty, and at the same time, ensure that the sum of the storage capacity of the other two storage tanks is greater than the volume value of the calibrated object.
液体介质如油或水等化工原料。Liquid media such as oil or water and other chemical raw materials.
(b)启动循环增压输送泵组2，控制各控制阀门启闭，使得液源内的液体介质依次流过循环增压输送泵组2、稳压装置3、标准表流量计组4和流量计校验标准装置5；待流量计校验标准装置5液源储液情况满足要求时，开始循环运行，然后按照流量计检定规程(或校准规范)对标准表流量计组进行流量值校验；(b) Start the circulating pressurized conveying pump group 2, control the opening and closing of each control valve, so that the liquid medium in the liquid source flows through the circulating pressurized conveying pump group 2, the pressure stabilizing device 3, the standard meter flow meter group 4 and the flow meter in sequence Calibrate the standard device 5; when the liquid source and storage conditions of the flowmeter calibration standard device 5 meet the requirements, start circulating operation, and then perform flow value verification on the standard meter flowmeter group according to the flowmeter verification regulations (or calibration specifications);
(c)对被标定对象储罐进行液位置零；控制各控制阀门启闭，使得液源内的液体介质依次流过循环增压输送泵组2、稳压装置3、标准表流量计组4后进入待标定储罐；标定过程中，选取步骤(b)中校验过的流量值进行加注，生成储罐容积与液位高度对应表，直至结束一个被标定对象储罐的容积检测。(c) Zero the liquid position of the storage tank to be calibrated; control the opening and closing of each control valve, so that the liquid medium in the liquid source flows through the circulating booster delivery pump group 2, the voltage stabilizing device 3, and the standard meter flowmeter group 4 in sequence Enter the storage tank to be calibrated; during the calibration process, select the flow value verified in step (b) for filling, generate a storage tank volume and liquid level correspondence table, until the volume detection of a calibrated object storage tank is completed.
本发明可远程对现场控制阀门、泵、流量、压力、液位等状态值进行实时控制处理，为通用工业控制技术。本发明具有适应性强，测量误差小的特点，不仅适用于火箭贮箱的容积标定，更便于石化行业现场多个储罐之间的相互校验检测，具有很强的实用价值。The present invention can remotely control and process state values such as on-site control valves, pumps, flow rates, pressures, and liquid levels in real time, and is a general industrial control technology. The invention has the characteristics of strong adaptability and small measurement error, is not only suitable for the volume calibration of rocket storage tanks, but also is more convenient for mutual verification and detection among multiple storage tanks in the petrochemical industry, and has strong practical value.
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