CN117054681A - Internal fluid velocity measurement assembly, method, data processing equipment and gas relay - Google Patents

Internal fluid velocity measurement assembly, method, data processing equipment and gas relay Download PDF

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Publication number
CN117054681A
CN117054681A CN202310967166.XA CN202310967166A CN117054681A CN 117054681 A CN117054681 A CN 117054681A CN 202310967166 A CN202310967166 A CN 202310967166A CN 117054681 A CN117054681 A CN 117054681A
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China
Prior art keywords
pressure sensor
fluid
sensor
flow velocity
total pressure
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CN202310967166.XA
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Chinese (zh)
Inventor
孙瑞
张申
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LANSO KONLY (SHANGHAI) INSTRUMENTS CO Ltd
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LANSO KONLY (SHANGHAI) INSTRUMENTS CO Ltd
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Priority to CN202310967166.XA priority Critical patent/CN117054681A/en
Publication of CN117054681A publication Critical patent/CN117054681A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26—Details
    • H01H35/30—Means for transmitting pressure to pressure-responsive operating part, e.g. by capsule and capillary tube

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The application provides an internal fluid velocity measurement assembly, which is arranged in a gas relay and used for measuring the flow velocity of internal fluid, and comprises the following components: the rapid pressure sensor and the total pressure sensor are pressure sensitive sensors; the sensor bracket comprises an outer side and an inner side, the sensor bracket is arranged in the fluid to be measured, the flow rate of the fluid at the outer side of the sensor bracket is consistent with the flow rate of the fluid to be measured, and the flow rate of the fluid at the inner side is zero; the rapid pressure sensor is arranged on the outer side of the sensor bracket, and the total pressure sensor is arranged on the inner side of the sensor bracket; the internal fluid velocity measurement assembly, the method, the data processing equipment and the gas relay realize real-time transmission and recording by presenting the flow velocity data in a parameterized mode through the pressure sensitive sensor, and solve the problems that the gas relay adopting a pure mechanical structure in the prior art cannot record the flow velocity change in real time and is not beneficial to fault pre-judgment and fault analysis.

Description

Internal fluid velocity measurement assembly, method, data processing equipment and gas relay
Technical Field
The application relates to the technical field of gas relays, in particular to an internal fluid velocity measurement assembly and method, data processing equipment and a gas relay.
Background
The gas relay is also called as a gas relay, is an element for pushing the relay to act by using hot oil flow and hot air flow generated when the transformer fails, and is a protective element of the transformer; the gas relay is arranged in a pipeline between the conservator and the oil tank of the transformer; if the oil filled transformer has discharge faults, the discharge arc decomposes the transformer oil to generate various characteristic gases such as methane, acetylene, hydrogen, carbon monoxide, carbon dioxide, ethylene, ethane and the like, the more serious the faults are, the larger the quantity of the gases is, and the gases flow through a gas relay in the process of rising from the inside of the transformer to a conservator at the upper part after being generated; if the gas quantity is small, the gas is accumulated in the gas relay, so that the float descends, a normally open contact of the relay is closed, and the gas relay acts on light gas protection to send out a warning signal; if the gas quantity is large, oil gas is quickly flushed out through the gas relay, the blocking action in the gas relay is pushed, the other group of normally open contacts are closed, relay protection tripping is directly started by heavy gas, the circuit breaker is opened, and the fault transformer is cut off.
The general gas relay adopts pure mechanical structure, can't record the velocity of flow change of fluid in the gas relay in a period of time, be unfavorable for the problem analysis after prejudgement and the trouble take place before the trouble takes place, simultaneously because gas relay inner space is very limited again, conventional subassembly that tests the speed hardly sets up wherein, life also is difficult to reach the requirement simultaneously.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present application is to provide an internal fluid velocity measurement assembly, a method, a data processing device and a gas relay, which solve the problems that in the prior art, a gas relay adopting a pure mechanical structure cannot record the flow velocity change in real time, and is not beneficial to fault pre-judgment and fault analysis.
In order to solve the above technical problems, the present application provides an internal fluid velocity measurement assembly disposed in a fluid pipeline of a gas relay for measuring an internal fluid velocity, comprising:
the system comprises a rapid pressure sensor and a total pressure sensor, wherein the rapid pressure sensor and the total pressure sensor are pressure-sensitive sensors;
the sensor bracket comprises an outer side and an inner side, the sensor bracket is arranged in the fluid to be detected, the flow rate of the fluid at the outer side of the sensor bracket is consistent with the flow rate of the fluid to be detected, and the flow rate of the fluid at the inner side is zero; the rapid pressure sensor is arranged on the outer side of the sensor support, the total pressure sensor is arranged on the inner side of the sensor support, and the horizontal heights of the rapid pressure sensor and the total pressure sensor are kept consistent.
As a more preferred manner, the internal fluid velocity measurement process includes:
the fluid pressure values at the quick pressure sensor and the total pressure sensor are obtained to be p respectively 1 And p 2 ；
Obtaining a pressure p at the rapid pressure sensor from the Bernoulli equation 1 Flow velocity v 1 And height h 1 Is a first equation of (2);
obtaining a pressure p at the total pressure sensor based on Bernoulli's equation 2 Flow velocity v 2 And height h 2 Is a second equation of (2);
the first equation and the second equation are combined, and the flow velocity v at the total pressure sensor is simultaneously calculated 2 Zero, height h at the rapid pressure sensor 1 Equal to the height h at the total pressure sensor 2 Calculating the flow velocity v at the rapid pressure sensor 1 And the flow velocity of the fluid outside the sensor bracket is consistent with the flow velocity of the fluid to be measured, so that the flow velocity of the internal fluid is obtained.
As a more preferred approach, the internal fluid velocity measurement process includes:
the fluid pressure values at the quick pressure sensor and the total pressure sensor are obtained to be p respectively 1 And p 2 ；
Then it can be derived from bernoulli's equation:wherein v is 1 The flow velocity of the fluid at the rapid pressure sensor is ρ is the preset fluid density according to different types of the fluid, g is the gravity acceleration, h 1 C is a constant for the height at which the rapid pressure sensor is located;
also according to bernoulli's equation:wherein v is 2 For the flow rate of the fluid at the total pressure sensor, ρ is the fluid density, g is the gravitational acceleration, h 2 C is a constant for the height at which the total pressure sensor is located;
and because the level heights of the rapid pressure sensor and the total pressure sensor are kept consistent, the pressure sensor is provided with a pressure sensor 1 ＝h 2 And the fluid flow velocity inside the sensor holder is zero, i.e. v 2 =0, and the above formula can be taken:
namely->The flow velocity of the fluid at the rapid pressure sensor is obtained, and the flow velocity of the fluid at the outer side of the sensor bracket is consistent with the flow velocity of the fluid to be measured, namely the flow velocity of the fluid inside the sensor bracket is obtained. In order to solve the above problems, the present application further provides an internal fluid velocity measurement method, including:
the fluid pressure values at the quick pressure sensor and the total pressure sensor are obtained to be p respectively 1 And p 2 The method comprises the steps of carrying out a first treatment on the surface of the The quick pressure sensor and the total pressure sensor are both arranged in the fluid to be measured, the fluid flow rate at the quick pressure sensor is consistent with the fluid flow rate of the fluid to be measured, the fluid flow rate at the total pressure sensor is zero, and the level heights of the quick pressure sensor and the total pressure sensor are kept consistent;
obtaining a pressure p at the rapid pressure sensor from the Bernoulli equation 1 Flow velocity v 1 And height h 1 Is a first equation of (2);
obtaining a pressure p at the total pressure sensor based on Bernoulli's equation 2 Flow velocity v 2 And height h 2 Is a second equation of (2);
simultaneously combining the first equation and the second equationAccording to the flow velocity v at the total pressure sensor 2 Zero, height h at the rapid pressure sensor 1 Equal to the height h at the total pressure sensor 2 Calculating the flow velocity v at the rapid pressure sensor 1 And the flow velocity of the fluid outside the sensor bracket is consistent with the flow velocity of the fluid to be measured, so that the flow velocity of the internal fluid is obtained.
In order to solve the above-described problems, the present application also provides a data processing apparatus including:
a memory for storing a computer program and a processor for executing the computer program stored in the memory to cause the terminal to execute the internal fluid velocity measurement method, the processor based on the acquired fluid pressure p at the velocity pressure sensor and at the total pressure sensor 1 、p 2 Obtaining corresponding flow velocity data by using an internal fluid velocity measurement method;
and the communication unit is connected with the processor.
As a more preferable mode, the data processing device further comprises an a/D chip, the a/D chip is connected with the processor, and the a/D chip is used for measuring the fluid pressure p at the rapid pressure sensor and the total pressure sensor in the internal fluid speed measuring method 1 、p 2 The digital signal has the advantages of strong interference resistance, convenient processing and the like, and is more convenient for the processor to process.
As a more preferred way, the data processing device further comprises a data compensation module, the fluid pressure p at the acquired rapid pressure sensor and at the total pressure sensor 1 、p 2 And the temperature compensation module compensates the temperature and then transmits the temperature compensation result to the processor, so that the interference of the temperature to the pressure can be eliminated, and the obtained flow velocity data is more accurate.
In order to solve the above problems, the present application also provides a gas relay including:
the internal fluid velocity measurement assembly is characterized in that the sensor support is arranged in the inner cavity of the gas relay, and the rapid pressure sensor and the total pressure sensor are respectively arranged at the outer side and the inner side of the sensor support;
the data processing device is characterized in that the rapid pressure sensor and the total pressure sensor are connected with the data processing device.
As a more preferable mode, the gas relay further comprises an upper computer, the data processing device sends the obtained flow rate data to the upper computer in real time through the communication unit, the upper computer is used for receiving the real-time flow rate data and carrying out subsequent processing, the processing pressure of the gas relay body processor is reduced, and meanwhile, when the gas relay body is abnormal, the flow rate data cannot be lost.
As a more preferable mode, the upper computer records and monitors and analyzes the acquired flow rate information in real time, and alarms when the flow rate data are abnormal, so that the gas relay can be removed before the fault occurs, and the sensitivity and the safety of the gas relay are improved.
As described above, the internal fluid velocity measurement assembly, the method, the data processing device and the gas relay have the following beneficial effects: the internal fluid velocity measurement assembly respectively acquires the pressure of a fluid flowing position and a fluid static position through a rapid pressure sensor and a total pressure sensor; according to the internal fluid velocity measurement method, the flow velocity of the internal fluid is calculated according to the obtained pressure at the rapid pressure sensor and the total pressure sensor and the Bernoulli formula, and the operation process is simple and convenient to operate; the processor of the data processing device of the application is based on the acquired fluid pressure p at the rapid pressure sensor and at the total pressure sensor 1 、p 2 The corresponding flow velocity data is calculated by using an internal fluid velocity measurement method stored in the memory, so that the operation process is simple, resources are saved, and hardware implementation is easy; the gas relay of the application utilizes the internal fluid velocity measurement assembly and the method to display the flow velocity data in a parameterized mode through the pressure-sensitive sensor, is convenient for real-time transmission and recording, and provides possibility for predicting abnormality according to data trend and deducing the cause of the problem application according to abnormal data; meanwhile, the internal fluid velocity measuring component has simple structure, small volume and portability,the gas relay is very suitable for being placed in a gas relay with limited internal space, is low in cost and easy to produce, and is very suitable for mass production; the pressure information of the relevant position collected by the pressure sensor is also an important parameter for representing the working state of the gas relay, and the relevant pressure information is transmitted and recorded while the flow speed data is transmitted and recorded in real time, so that the fault pre-judging and fault analyzing capabilities are further improved, and furthermore, the whole internal fluid velocity measuring assembly is a solid state testing device, is not easy to damage, is not worn, and has longer service life; the internal fluid velocity measurement assembly, the method, the data processing equipment and the gas relay realize real-time transmission and recording by presenting the flow velocity data in a parameterized mode through the pressure sensitive sensor, and solve the problems that the gas relay adopting a pure mechanical structure in the prior art cannot record the flow velocity change in real time and is not beneficial to fault pre-judgment and fault analysis.
Drawings
FIG. 1 is a schematic view of the installation of the internal fluid velocity measurement assembly of the present application;
FIG. 2 is a schematic diagram of the method of the present application for measuring internal fluid velocity;
FIG. 3 is a schematic diagram of a data processing apparatus of the present application;
fig. 4 shows a schematic diagram of the modules of the gas relay of the present application.
Description of element reference numerals
1. Gas relay
11. Internal fluid velocity measurement assembly
111. Quick-press sensor
112. Total pressure sensor
113. Sensor support
114. Quick-voltage signal transmission line
115. Total voltage signal transmission line
12. Data processing apparatus
121. Processor and method for controlling the same
122. Memory device
122a operating system
122b application
123. Communication unit
124 A/D chip
125. Data compensation module
126. Bus system
13. Upper computer
Detailed Description
Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present application with reference to specific examples. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the application. It is to be understood that other embodiments may be utilized and that mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present application. The following detailed description is not to be taken in a limiting sense, and the scope of embodiments of the present application is defined only by the claims of the issued patent. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Spatially relative terms, such as "upper," "lower," "left," "right," "lower," "upper," and the like, may be used herein to facilitate a description of one element or feature as illustrated in the figures as being related to another element or feature.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "held," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. The terms "first," "second," "third," "fourth" and the like in the description and in the claims and drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," "includes," and/or "including" specify the presence of stated features, operations, elements, components, items, categories, and/or groups, but do not preclude the presence, presence or addition of one or more other features, operations, elements, components, items, categories, and/or groups. It will be further understood that the terms "or" and/or "as used herein are to be interpreted as inclusive, or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a, A is as follows; b, a step of preparing a composite material; c, performing operation; a and B; a and C; b and C; A. b and C). An exception to this definition will occur only when a combination of elements, functions or operations are in some way inherently mutually exclusive.
In order to solve the problems in the background art, the application provides a multi-internal fluid velocity measurement assembly, a multi-internal fluid velocity measurement method, data processing equipment and a gas relay, and aims to realize real-time transmission and recording of fluid velocity data in the gas relay 1, and solve the problems that the gas relay 1 adopting a pure mechanical structure in the prior art cannot record velocity change in real time, and is unfavorable for fault pre-judgment and fault analysis. Meanwhile, in order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments of the present application will be further described in detail by the following examples with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
Before explaining the present application in further detail, terms and terminology involved in the embodiments of the present application will be explained, and the terms and terminology involved in the embodiments of the present application are applicable to the following explanation:
<1> bernoulli equation: the bernoulli equation is a physical equation, also known as the "bernoulli principle," which refers to the existence of a relationship between fluid pressure, velocity, and height in fluid dynamics, and can be expressed as:
v is the flow rate of the fluid at a certain point, ρ is the density of the fluid, g is the gravitational acceleration, h is the altitude at a certain point, and C is a constant. This equation shows that pressure, kinetic energy and potential energy can be converted into each other during the flow of the fluid, but the total mechanical energy is conserved. The bernoulli principle can be applied to the interpretation and prediction of various flow phenomena, such as the flow of liquids in pipes, the flow of air when an aircraft is in flight, etc.
As shown in fig. 1, the present application provides an internal fluid velocity measurement assembly 11 disposed in a fluid conduit of a gas relay 1 for measuring an internal fluid velocity, comprising:
a rapid pressure sensor 111 and a total pressure sensor 112, wherein the rapid pressure sensor 111 and the total pressure sensor 112 are pressure-sensitive sensors;
the sensor support 113, wherein the sensor support 113 comprises an outer side and an inner side, the sensor support 113 is arranged in the fluid to be measured, the fluid flow rate at the outer side of the sensor support 113 is consistent with the fluid flow rate of the fluid to be measured, and the fluid flow rate at the inner side is zero; the rapid pressure sensor 111 is disposed outside the sensor bracket 113, the total pressure sensor 112 is disposed inside the sensor bracket 113, and the horizontal heights of the rapid pressure sensor 111 and the total pressure sensor 112 are kept uniform.
In this embodiment, the sensor holder 113 is closed at one end or a stop structure is provided so that the fluid flow rate at the total pressure sensor 112 is zero.
In this embodiment, the internal fluid velocity measurement process includes:
acquiring fluid pressure values at the rapid pressure sensor 111 and the total pressure sensor 112 as p respectively 1 And p 2 ；
Obtaining a pressure p at the rapid pressure sensor 111 based on the Bernoulli equation 1 Flow velocity v 1 And height h 1 Is a first equation of (2);
obtaining a pressure p at the total pressure sensor 112 based on the Bernoulli equation 2 Flow velocity v 2 And height h 2 Is a second equation of (2);
the first equation and the second equation are combined, based on the flow velocity v at the total pressure sensor 112 2 Zero, height h at the rapid pressure sensor 111 1 Equal to the height h at the total pressure sensor 112 2 The flow velocity v at the rapid pressure sensor 111 is calculated 1 And because the flow rate of the fluid outside the sensor bracket 113 is consistent with the flow rate of the fluid to be measured, the flow rate of the internal fluid is obtained.
In this embodiment, the internal fluid velocity measurement process includes:
acquiring fluid pressure values at the rapid pressure sensor 111 and the total pressure sensor 112 as p respectively 1 And p 2 ；
Then it can be derived from bernoulli's equation:wherein v is 1 For the flow velocity of the fluid at the rapid pressure sensor 111, ρ is the preset fluid density according to the different types of the fluid, g is the gravity acceleration, h 1 C is a constant for the height at which the rapid pressure sensor 111 is located;
also according to bernoulli's equation:wherein v is 2 For the flow rate of the fluid at the total pressure sensor 112, ρ is the fluid density, g is the gravitational acceleration, h 2 C is a constant for the height at which the total pressure sensor 112 is located;
also, because the level of the rapid pressure sensor 111 and the total pressure sensor 112 are kept uniform, the h 1 ＝h 2 And the fluid flow velocity inside the sensor holder 113 is zero, i.e. v 2 =0, and the above formula can be taken:
namely->The flow rate of the fluid at the rapid pressure sensor 111 is thus obtained, and since the flow rate of the fluid outside the sensor holder 113 is identical to the flow rate of the fluid to be measured, i.e. the flow rate of the internal fluid is obtained.
In order to solve the above problems, as shown in fig. 2, the present application further provides an internal fluid velocity measurement method, including:
s01: acquiring fluid pressure values at the rapid pressure sensor 111 and the total pressure sensor 112 as p respectively 1 And p 2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein, the rapid pressure sensor 111 and the total pressure sensor 112 are both arranged in the fluid to be measured, the fluid flow rate at the rapid pressure sensor 111 is consistent with the fluid flow rate of the fluid to be measured, the fluid flow rate at the total pressure sensor 112 is zero, and the level heights of the rapid pressure sensor 111 and the total pressure sensor 112 are kept consistent;
s02: obtaining a pressure p at the rapid pressure sensor 111 based on the Bernoulli equation 1 Flow velocity v 1 And height h 1 Is a first equation of (2);
s03: obtained from Bernoulli's equationWith respect to the pressure p at the total pressure sensor 112 2 Flow velocity v 2 And height h 2 Is a second equation of (2);
s04: the first equation and the second equation are combined, based on the flow velocity v at the total pressure sensor 112 2 Zero, height h at the rapid pressure sensor 111 1 Equal to the height h at the total pressure sensor 112 2 The flow velocity v at the rapid pressure sensor 111 is calculated 1 And because the flow rate of the fluid outside the sensor bracket 113 is consistent with the flow rate of the fluid to be measured, the flow rate of the internal fluid is obtained.
The internal fluid velocity measurement assembly 11 of the present application obtains the pressures of the fluid flow position and the fluid rest position through the rapid pressure sensor 111 and the total pressure sensor 112, respectively; according to the internal fluid velocity measurement method, the flow velocity of the internal fluid is calculated according to the obtained pressures at the rapid pressure sensor 111 and the total pressure sensor 112 and the Bernoulli formula, and the operation process is simple and convenient to operate.
In order to solve the above-described problems, the present application also provides a data processing apparatus 12 including:
a memory 122 and a processor 121, the memory 122 being configured to store a computer program, the processor 121 being configured to execute the computer program stored in the memory 122, to cause the terminal to perform the internal fluid velocity measurement method described above, the processor 121 being configured to determine the fluid pressure p at the rapid pressure sensor 111 and at the total pressure sensor 112 based on the obtained fluid pressure p 1 、p 2 Obtaining corresponding flow velocity data by using an internal fluid velocity measurement method;
a communication unit, which is connected to the processor 121.
In this embodiment, as shown in FIG. 3, the various components in the device are coupled together by a bus system 126. It is to be understood that the bus system 126 is used to enable connected communications between these components. The bus system 126 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled in fig. 3 as bus system 126.
In the present embodiment, whatThe data processing device 12 further comprises an a/D chip 124, the a/D chip 124 is connected to the processor 121, and the a/D chip 124 is configured to obtain the fluid pressure p at the rapid pressure sensor 111 and at the total pressure sensor 112 in the internal fluid velocity measurement method described above 1 、p 2 And convert it into digital signal to transmit to the processor 121, the digital signal has strong anti-interference and easy to process, etc., more facilitate the processor 121 to process; more specifically, in the present embodiment, as shown in fig. 1, the fluid pressure p at the rapid pressure sensor 111 and at the total pressure sensor 112 of the internal fluid velocity measurement assembly 11 1 、p 2 The diagram is transmitted to the A/D chip 124 through the rapid voltage signal transmission line 114 and the total voltage signal transmission line 115, respectively; in this embodiment, the a/D chip 124 may not be used to acquire the digital signal, and the analog signal may be directly transmitted to the processor 121 for processing.
In the present embodiment, the data processing device 12 further comprises a data compensation module 125, which obtains the fluid pressure p at the fast pressure sensor 111 and at the total pressure sensor 112 1 、p 2 The temperature compensated data is transmitted to the processor 121 by the data compensation module 125, so that the interference of temperature to pressure can be eliminated, and the obtained flow rate data is more accurate.
It is to be appreciated that the memory 122 can be either volatile memory 122 or nonvolatile memory 122, and can include both volatile and nonvolatile memory 122. The nonvolatile Memory 122 may be a Read Only Memory 122 (ROM), a programmable Read Only Memory 122 (PROM, programmable Read-Only Memory), which serves as an external cache, among others. By way of example, and not limitation, many forms of RAM are available, such as static random Access Memory 122 (SRAM, staticRandom Access Memory), synchronous static random Access Memory 122 (SSRAM, synchronous Static RandomAccess Memory). The memory 122 described in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory 122.
The memory 122 in embodiments of the present application is used to store various categories of data to support the operation of the data processing device 12. Examples of such data include: any executable programs for operating on data processing device 12, such as operating system 122a and application programs 122b; the operating system 122a contains various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and handling hardware-based tasks. The application 122b may include various applications 122b for implementing various other application services. The method for measuring the speed of the internal fluid provided by the embodiment of the application can be contained in the application 122 b.
The method disclosed in the above embodiment of the present application may be applied to the processor 121 or implemented by the processor 121. The processor 121 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 121 or instructions in the form of software. The processor 121 may be a general purpose processor, a digital signal processor (DSP, digital Signal Processor), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the accessory optimization method provided by the embodiment of the application can be directly embodied as the execution completion of the hardware decoding processor or the execution completion of the hardware and software module combination execution in the decoding processor. The software modules may be located in a storage medium having memory and a processor reading information from the memory and performing the steps of the method in combination with hardware.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by computer program related hardware. The aforementioned computer program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
In the embodiments provided herein, the memory may include read-only memory, random-access memory, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, flash memory, U-disk, removable hard disk, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer. In addition, any connection is properly termed a computer-readable medium. For example, if the instructions are transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line DSL, or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. It should be understood, however, that computer-readable and data storage media do not include connections, carrier waves, signals, or other transitory media, but are intended to be directed to non-transitory, tangible storage media. Disk and disc, as used herein, includes compact disc, CD, laser disc, optical disc, digital versatile disc, DVD, floppy disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers.
In order to solve the above-mentioned problems, as shown in fig. 4, the present application also provides a gas relay 1 comprising:
the above-mentioned internal fluid velocity measurement assembly 11, the said sensor support 113 is set up in the inner chamber of the said gas relay 1, the said rapid pressure sensor 111 and total pressure sensor 112 are set up in the outside and inboard of the said sensor support 113 separately;
the data processing device 12 described above, the rapid pressure sensor 111 and the total pressure sensor 112 are connected to the data processing device 12.
The gas relay 1 of the application utilizes the internal fluid velocity measurement assembly 11 and the method to present the flow velocity data in a parameterized mode through the pressure sensitive sensor, is convenient for real-time transmission and recording, and provides possibility for the follow-up prediction of abnormality according to the data trend and the reason of the application according to the abnormal data inversion; meanwhile, the internal fluid velocity measurement assembly 11 has the advantages of simple structure, small volume and portability, is very suitable for being placed in the gas relay 1 with limited internal space, has low cost and easy production, and is very suitable for mass production; the pressure information of the relevant position collected by the pressure sensor is also an important parameter for representing the working state of the gas relay 1, the relevant pressure information is transmitted and recorded while the flow rate data is transmitted and recorded in real time, the fault pre-judging and fault analyzing capabilities are further improved, and furthermore, the whole internal fluid velocity measuring assembly 11 is a solid state testing device, is not easy to damage, has no abrasion and has longer service life.
In this embodiment, as shown in fig. 4, the gas relay 1 further includes an upper computer 13, the data processing device 12 sends the obtained flow rate data to the upper computer 13 in real time through the communication unit 123, and the upper computer 13 is used to receive the real-time flow rate data and perform subsequent processing, so that the processing pressure of the gas relay body processor 121 is reduced, and meanwhile, when the gas relay body is abnormal, the flow rate data is not lost.
In this embodiment, the upper computer 13 records and monitors and analyzes the acquired flow rate information in real time, and alarms when the flow rate data is abnormal, so that the sensitivity and the safety of the gas relay 1 can be improved by eliminating the flow rate data before the fault occurs, and in this embodiment, the upper computer 13 is connected with the gas relay body through a data transmission line, and also can be connected with the gas relay body through a wireless data transmission module.
In summary, the internal fluid velocity measurement assembly, the method, the data processing device and the gas relay of the application realize real-time transmission and recording by presenting the flow velocity data in a parameterized manner through the pressure sensitive sensor, and solve the problems that the gas relay 1 adopting a pure mechanical structure in the prior art cannot record the flow velocity change in real time, which is not beneficial to fault pre-judgment and fault analysis. Therefore, the application effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present application and its effectiveness, and are not intended to limit the application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that all equivalent modifications and variations of the application be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (10)

1. An internal fluid velocity measurement assembly for measuring internal fluid flow velocity disposed within a fluid conduit of a gas relay (1), comprising:
a rapid pressure sensor (111) and a total pressure sensor (112), wherein the rapid pressure sensor (111) and the total pressure sensor (112) are pressure-sensitive sensors;
the sensor bracket (113), the sensor bracket (113) comprises an outer side and an inner side, the sensor bracket (113) is arranged in the fluid to be measured, the fluid flow rate at the outer side of the sensor bracket (113) is consistent with the fluid flow rate of the fluid to be measured, and the fluid flow rate at the inner side is zero; the rapid pressure sensor (111) is arranged on the outer side of the sensor bracket (113), the total pressure sensor (112) is arranged on the inner side of the sensor bracket (113), and the horizontal heights of the rapid pressure sensor (111) and the total pressure sensor (112) are kept consistent.
2. The internal fluid speed measurement assembly according to claim 1, wherein: the internal fluid speed measurement process includes:
the fluid pressure values at the position of the rapid pressure sensor (111) and the position of the total pressure sensor (112) are respectively p 1 And p 2 ；
Obtaining a pressure p at the rapid pressure sensor (111) from the Bernoulli equation 1 Flow velocity v 1 And height h 1 Is a first equation of (2);
obtaining a pressure p at the total pressure sensor (112) from the Bernoulli equation 2 Flow velocity v 2 And height h 2 Is a second equation of (2);
simultaneous first equationA second equation, based on the flow velocity v at the total pressure sensor (112) 2 Zero, height h at the rapid pressure sensor (111) 1 Equal to the height h at the total pressure sensor (112) 2 Calculating the flow velocity v at the rapid pressure sensor (111) 1 And because the flow velocity of the fluid outside the sensor bracket (113) is consistent with the flow velocity of the fluid to be measured, the flow velocity of the internal fluid is obtained.
3. The internal fluid speed measurement assembly according to claim 2, wherein: the internal fluid speed measurement process includes:
the fluid pressure values at the position of the rapid pressure sensor (111) and the position of the total pressure sensor (112) are respectively p 1 And p 2 ；
Then it can be derived from bernoulli's equation:wherein v is 1 For the flow velocity of the fluid at the rapid pressure sensor (111), ρ is the preset fluid density according to different types of the fluid, g is the gravity acceleration, h 1 C is a constant for the height at which the rapid pressure sensor (111) is located;
also according to bernoulli's equation:wherein v is 2 Is the flow rate of the fluid at the total pressure sensor (112), ρ is the fluid density, g is the gravitational acceleration, h 2 C is a constant for the height at which the total pressure sensor (112) is located;
also because the level of the rapid pressure sensor (111) and the total pressure sensor (112) are kept consistent, the h 1 ＝h 2 And the fluid flow velocity inside the sensor support (113) is zero, i.e. v 2 =0, and the above formula can be taken:
namely->Thereby obtaining the flow rate of the fluid at the rapid pressure sensor (111), and also obtaining the flow rate of the internal fluid because the flow rate of the fluid at the outer side of the sensor bracket (113) is consistent with the flow rate of the fluid to be measured.
4. An internal fluid speed measurement method, comprising:
the fluid pressure values at the position of the rapid pressure sensor (111) and the position of the total pressure sensor (112) are respectively p 1 And p 2 The method comprises the steps of carrying out a first treatment on the surface of the The quick pressure sensor (111) and the total pressure sensor (112) are arranged in the fluid to be measured, the fluid flow rate at the quick pressure sensor (111) is consistent with the fluid flow rate of the fluid to be measured, the fluid flow rate at the total pressure sensor (112) is zero, and the level heights of the quick pressure sensor (111) and the total pressure sensor (112) are kept consistent;
obtaining a pressure p at the rapid pressure sensor (111) from the Bernoulli equation 1 Flow velocity v 1 And height h 1 Is a first equation of (2);
obtaining a pressure p at the total pressure sensor (112) from the Bernoulli equation 2 Flow velocity v 2 And height h 2 Is a second equation of (2);
the first equation and the second equation are combined, and the flow velocity v at the total pressure sensor (112) is simultaneously calculated 2 Zero, height h at the rapid pressure sensor (111) 1 Equal to the height h at the total pressure sensor (112) 2 Calculating the flow velocity v at the rapid pressure sensor (111) 1 And because the flow velocity of the fluid outside the sensor bracket (113) is consistent with the flow velocity of the fluid to be measured, the flow velocity of the internal fluid is obtained.
5. A data processing apparatus, comprising:
a memory (122) and a processor (121), the memory (122) being for storing a computer program, the processor (121) being for executing the computer program stored by the memory (122) to cause the terminal to execute the method as claimedThe method of measuring internal fluid velocity as recited in claim 4 wherein the processor (121) obtains fluid pressure p at the rapid pressure sensor (111) and at the total pressure sensor (112) 1 、p 2 Transmitting to a processor (121);
and the communication unit is connected with the processor (121).
6. The data processing apparatus according to claim 5, wherein: the data processing device (12) further comprises an A/D chip (124), the A/D chip (124) is connected with the processor (121), and the A/D chip (124) is used for acquiring the fluid pressure p at the rapid pressure sensor (111) and at the total pressure sensor (112) in the speed measuring method according to claim 4 1 、p 2 And converts it into a digital signal for transmission to a processor (121).
7. The data processing apparatus according to claim 5, wherein: the data processing device (12) further comprises a data compensation module (125) for obtaining a fluid pressure p at the fast pressure sensor (111) and at the total pressure sensor (112) 1 、p 2 And the data is compensated by the data compensation module (125) according to the temperature and then transmitted to the processor (121).
8. A gas relay, comprising:
the internal fluid speed measurement assembly (11) according to any one of claims 1 to 3, the sensor holder (113) being arranged in an inner cavity of the gas relay (1), the rapid pressure sensor (111) and the total pressure sensor (112) being arranged outside and inside the sensor holder (113), respectively;
the data processing device (12) of any of claims 5 to 7, the rapid pressure sensor (111) and the total pressure sensor (112) being connected to the data processing device (12).
9. The gas relay of claim 8, wherein: the gas relay (1) further comprises an upper computer (13), and the data processing equipment (12) sends the obtained flow rate data to the upper computer (13) in real time through the communication unit (123).
10. The gas relay of claim 9, wherein: the upper computer (13) records and monitors and analyzes the acquired flow velocity information in real time, and alarms when the flow velocity data are abnormal.
CN202310967166.XA 2023-08-02 2023-08-02 Internal fluid velocity measurement assembly, method, data processing equipment and gas relay Pending CN117054681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310967166.XA CN117054681A (en) 2023-08-02 2023-08-02 Internal fluid velocity measurement assembly, method, data processing equipment and gas relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310967166.XA CN117054681A (en) 2023-08-02 2023-08-02 Internal fluid velocity measurement assembly, method, data processing equipment and gas relay

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Publication Number Publication Date
CN117054681A true CN117054681A (en) 2023-11-14

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Country Status (1)

Country Link
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