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

Abstract

The invention provides an internal fluid speed measuring component, which is arranged inside a gas relay to measure the internal fluid flow speed, including: a speed pressure sensor and a total pressure sensor. Both the speed pressure sensor and the total pressure sensor adopt pressure-sensitive sensors; a sensor bracket; and a sensor bracket. Including the outside and the inside, the sensor bracket is set in the fluid to be measured, and the fluid flow rate outside the sensor bracket is consistent with the flow rate of the fluid to be measured, and the fluid flow rate inside is zero; the speed pressure sensor is set outside the sensor bracket, and the total pressure sensor is set on the inside of the sensor bracket; the internal fluid velocity measurement component, method, data processing equipment and gas relay of the present invention present the flow velocity data in a parameterized manner through the pressure-sensitive sensor, achieving real-time transmission and recording, and solving the current problem There are gas relays with purely mechanical structures that cannot record flow rate changes in real time, which is not conducive to fault prediction and fault analysis.

Description

Internal fluid velocity measurement components, methods and data processing equipment and gas relays

Technical field

The present invention relates to the technical field of gas relays, and in particular to an internal fluid velocity measurement component, method, data processing equipment and gas relay.

Background technique

The gas relay, also known as the gas relay, is a component that uses the hot oil flow and hot air flow generated during a fault in the transformer to push the relay action. It is a protective component of the transformer; the gas relay is installed in the pipe between the oil conservator and the oil tank of the transformer; if When a discharge fault occurs inside an oil-filled transformer, the discharge arc causes the transformer oil to decompose, producing a variety of characteristic gases such as methane, acetylene, hydrogen, carbon monoxide, carbon dioxide, ethylene, and ethane. The more serious the fault, the greater the amount of gas. These gases After being generated, it rises from the inside of the transformer to the upper oil conservator and flows through the gas relay; if the amount of gas is small, the gas accumulates in the gas relay, causing the float to drop, closing the normally open contact of the relay, and acting on light gas The protection sends a warning signal; if the amount of gas is large, the oil and gas rush out quickly through the gas relay, pushing the inner block of the gas relay to pull and close the other set of normally open contacts. If there is heavy gas, the relay protection will be directly activated to trip and the circuit breaker will be disconnected. , remove the faulty transformer.

The general gas relay adopts a purely mechanical structure and cannot record the flow rate changes of the fluid in the gas relay over a period of time, which is not conducive to prediction before a fault occurs and problem analysis after the fault occurs. At the same time, because the internal space of the gas relay is very limited, conventional It is difficult to install the speed measuring component in it, and the service life is also difficult to meet the requirements.

Contents of the invention

In view of the above shortcomings of the prior art, the technical problem to be solved by the present invention is to provide an internal fluid speed measurement component, method, data processing equipment and gas relay to solve the problem that the gas relay using a purely mechanical structure in the prior art cannot record in real time. Changes in flow rate are not conducive to fault prediction and fault analysis.

In order to solve the above technical problems, the present invention provides an internal fluid velocity measuring component, which is disposed in the gas relay fluid pipeline to measure the internal fluid flow velocity, including:

A rapid pressure sensor and a total pressure sensor, both of which adopt pressure-sensitive sensors;

The sensor bracket includes an outer side and an inner side, the sensor bracket is arranged in the fluid to be measured, and the fluid flow rate outside the sensor bracket is consistent with the flow rate of the fluid to be measured, and the fluid flow rate inside is zero; the velocity The pressure sensor is arranged on the outside of the sensor bracket, the total pressure sensor is arranged on the inside of the sensor bracket, and the horizontal heights of the rapid pressure sensor and the total pressure sensor are kept consistent.

As a more preferred way, the internal fluid velocity measurement process includes:

Obtain the fluid pressure values at the velocity pressure sensor and total pressure sensor as p ₁ and p ₂ respectively;

Obtain the first equation about the pressure p ₁ , flow velocity v ₁ , and height h ₁ at the velocity pressure sensor according to Bernoulli's equation;

Obtain the second equation regarding the pressure p ₂ , flow velocity v ₂ , and height h ₂ at the total pressure sensor according to Bernoulli's equation;

Combine the first equation and the second equation. At the same time, according to the fact that the flow velocity v ₂ at the total pressure sensor is zero and the height h ₁ at the speed pressure sensor is equal to the height h ₂ at the total pressure sensor, the flow speed v at the speed pressure sensor is calculated. ₁ , and because the fluid flow rate outside the sensor bracket is consistent with the flow rate of the fluid to be measured, the flow rate of the internal fluid is obtained.

As a more preferred way, the internal fluid velocity measurement process includes:

Obtain the fluid pressure values at the velocity pressure sensor and total pressure sensor as p ₁ and p ₂ respectively;

Then according to Bernoulli’s equation we can get: Where v ₁ is the flow rate of the fluid at the velocity pressure sensor, ρ is the fluid density preset according to different types of fluids, g is the acceleration of gravity, h ₁ is the height of the velocity pressure sensor, and C is a constant;

Also according to Bernoulli’s equation: where v ₂ is the flow velocity of the fluid at the total pressure sensor, ρ is the density of the fluid, g is the acceleration of gravity, h ₂ is the height of the total pressure sensor, and C is a constant;

And because the horizontal heights of the speed pressure sensor and the total pressure sensor are consistent, h ₁ =h ₂ , and the fluid flow rate inside the sensor bracket is zero, that is, v ₂ =0, adding it to the above formula can be obtained:

That is/> Thus, the flow rate of the fluid at the velocity pressure sensor is obtained, and because the flow rate of the fluid outside the sensor bracket is consistent with the flow rate of the fluid to be measured, the flow rate of the internal fluid is obtained. In order to solve the above problems, the present invention also provides an internal fluid velocity measurement method, including:

Obtain the fluid pressure values at the speed pressure sensor and the total pressure sensor as p ₁ and p ₂ respectively; where, the speed pressure sensor and the total pressure sensor are both set in the fluid to be measured, and the fluid flow rate at the speed pressure sensor is the same as that to be measured. The flow rate of the measured fluid is consistent, the fluid flow rate at the total pressure sensor is zero, and at the same time, the levels at the speed pressure sensor and the total pressure sensor are kept consistent;

Obtain the first equation about the pressure p ₁ , flow velocity v ₁ , and height h ₁ at the velocity pressure sensor according to Bernoulli's equation;

Obtain the second equation regarding the pressure p ₂ , flow velocity v ₂ , and height h ₂ at the total pressure sensor according to Bernoulli's equation;

Combine the first equation and the second equation. At the same time, according to the fact that the flow velocity v ₂ at the total pressure sensor is zero and the height h ₁ at the speed pressure sensor is equal to the height h ₂ at the total pressure sensor, the flow speed v at the speed pressure sensor is calculated. ₁ , and because the fluid flow rate outside the sensor bracket is consistent with the flow rate of the fluid to be measured, the flow rate of the internal fluid is obtained.

In order to solve the above problems, the present invention also provides a data processing device, including:

A memory and a processor, the memory is used to store a computer program, the processor is used to execute the computer program stored in the memory, so that the terminal performs the above-mentioned internal fluid velocity measurement method, the processor is configured according to the acquired velocity pressure sensor and The fluid pressure p ₁ and p ₂ at the total pressure sensor are used to obtain the corresponding flow rate data using the internal fluid velocity measurement method;

a communication unit, which is connected to the processor.

As a more preferred way, the data processing device further includes an A/D chip, the A/D chip is connected to the processor, and the A/D chip is used to measure velocity pressure in the above internal fluid velocity measurement method. The fluid pressure p ₁ and p ₂ at the sensor and the total pressure sensor are converted into digital signals and transmitted to the processor. The digital signals have the advantages of strong anti-interference and easy processing, making it easier for the processor to process.

As a more preferred way, the data processing equipment also includes a data compensation module. The obtained fluid pressures p ₁ and p ₂ at the speed pressure sensor and the total pressure sensor are compensated by the data compensation module according to the temperature and then transmitted to processor, which can eliminate the interference of temperature on pressure, making the flow rate data obtained more accurate.

In order to solve the above problems, the present invention also provides a gas relay, including:

In the above-mentioned internal fluid speed measuring assembly, the sensor bracket is arranged in the inner cavity of the gas relay, and the speed pressure sensor and the total pressure sensor are respectively arranged on the outside and inside of the sensor bracket;

The above-mentioned data processing device, the rapid pressure sensor and the total pressure sensor are connected to the data processing device.

As a more preferred way, the gas relay also includes a host computer. The data processing device sends the obtained flow rate data to the host computer in real time through the communication unit, and uses the host computer to receive the real-time flow rate data and perform subsequent processing. processing, which reduces the processing pressure of the gas relay body processor. At the same time, when an abnormality occurs in the gas relay body, the flow rate data will not be lost.

As a more preferred method, the host computer records, monitors and analyzes the obtained flow rate information in real time, and issues an alarm when an abnormality occurs in the flow rate data. This way, the fault can be eliminated before it occurs and the gas can be improved. Relay sensitivity and safety.

As mentioned above, the internal fluid velocity measurement component, method, data processing equipment and gas relay of the present invention have the following beneficial effects: the internal fluid velocity measurement component of the present invention obtains the fluid flow position and the fluid resting position through the velocity pressure sensor and the total pressure sensor respectively. The pressure; the internal fluid velocity measurement method corresponding to the present invention calculates the flow velocity of the internal fluid based on the obtained pressure at the velocity pressure sensor and the total pressure sensor, as well as Bernoulli's formula and simultaneous equations, and the calculation process is simple and easy to operate; this method The processor of the invented data processing equipment calculates the corresponding flow rate data based on the obtained fluid pressure p ₁ and p ₂ at the velocity pressure sensor and the total pressure sensor using the internal fluid velocity measurement method stored in the memory. The calculation process is simple and saves resources. Easy to implement in hardware; the gas relay of the present invention utilizes the above-mentioned internal fluid velocity measurement components and methods to present the flow velocity data in a parameterized manner through the pressure-sensitive sensor, which facilitates real-time transmission and recording, and provides a basis for subsequent prediction of anomalies based on data trends and based on It provides the possibility of inventing the problem of abnormal data backcasting; at the same time, the internal fluid speed measurement component has a simple structure, is small and lightweight, and is very suitable for being placed in a gas relay with limited internal space. In addition, it is low cost and easy to produce, and is very suitable for mass manufacturing. ; And the pressure information at relevant positions collected by the pressure-sensitive sensor is also an important parameter to characterize the working status of the gas relay. It transmits and records the relevant pressure information in real time while transmitting and recording the flow rate data, further improving the ability of fault prediction and fault analysis. Furthermore, the entire internal fluid speed measuring component is a solid-state testing device, which is not easily damaged, has no wear and tear, and has a longer service life; the internal fluid speed measuring component, method, data processing equipment and gas relay of the present invention pass the flow rate data to The pressure-sensitive sensor is presented in a parameterized manner to achieve real-time transmission and recording, solving the problem that the gas relay using a purely mechanical structure in the existing technology cannot record flow rate changes in real time, which is not conducive to fault prediction and fault analysis.

Description of the drawings

Figure 1 shows a schematic diagram of the installation of the internal fluid velocity measuring assembly of the present invention;

Figure 2 shows a schematic diagram of the internal fluid velocity measurement method of the present invention;

Figure 3 shows a schematic diagram of the data processing device of the present invention;

Figure 4 shows a schematic diagram of each module of the gas relay of the present invention.

Component label description

1 gas relay

11 Internal fluid velocity measuring assembly

111 Speed pressure sensor

112 Total pressure sensor

113 sensor bracket

114 high speed signal transmission line

115 total voltage signal transmission line

12 Data processing equipment

121 processor

122 memory

122a operating system

122b application

123 communication unit

124 A/D chip

125 Data Compensation Module

126 bus system

13 Host computer

Detailed ways

The following describes the implementation of the present application through specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, as long as there is no conflict, the following embodiments and the features in the embodiments can be combined with each other.

It should be noted that in the following description, reference is made to the accompanying drawings, which describe several embodiments of the present application. It is to be understood that other embodiments may be utilized and mechanical, structural, electrical, as well as operational changes may be made without departing from the spirit and scope of the present application. The following detailed description should not be considered limiting, and the scope of embodiments of the present application is limited only by the claims of the published 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 related terms, such as "upper", "lower", "left", "right", "below", "below", "bottom", "above", "upper", etc., may be used in the text to facilitate explanation The relationship of one element or feature to another illustrated in the figures.

In this application, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing", "holding" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a fixed connection. It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to 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", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific sequence. Or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprises" and "including" indicate the presence of stated features, operations, elements, components, items, categories, and/or groups, but do not exclude one or more other features, operations, elements, components, items, The existence, occurrence or addition of categories, and/or groups. It will be further understood that the terms "or" and "and/or" as used herein are to be construed as inclusive or to mean any one or any combination. Therefore, "A, B or C" or "A, B and/or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C" . Exceptions to this definition occur only when a combination of elements, functions, or operations is inherently mutually exclusive in some manner.

In order to solve the problems in the above background technology, the present invention provides a multi-internal fluid speed measurement component, method, data processing equipment and gas relay, aiming to realize real-time transmission and recording of fluid flow rate data in the gas relay 1, and solve the problem of using existing technologies. The gas relay 1 with a purely mechanical structure cannot record flow rate changes in real time, which is not conducive to fault prediction and fault analysis. At the same time, in order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention are further described in detail through the following embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the invention and are not intended to limit the invention.

Before further describing the present invention in detail, the nouns and terms involved in the embodiments of the present invention are explained. The nouns and terms involved in the embodiments of the present invention are suitable for the following explanations:

<1>Bernoulli's equation: Bernoulli's equation is a physics equation, also known as "Bernoulli's principle", which refers to the certain relationship between the pressure, velocity and height of a fluid in fluid dynamics. , can be expressed as:

v is the flow velocity of the fluid at a certain point, ρ is the density of the fluid, g is the acceleration of gravity, h is the altitude of a certain point, and C is a constant. This equation shows that during the flow of fluid, pressure, kinetic energy and potential energy can be converted into each other, but the total mechanical energy is conserved. Bernoulli's principle can be applied to the explanation and prediction of various flow phenomena, such as the flow of liquid in pipes, the flow of air during aircraft flight, etc.

As shown in Figure 1, the present invention provides an internal fluid velocity measuring component 11, which is arranged in the fluid pipe of the gas relay 1 to measure the internal fluid flow velocity, including:

Rapid pressure sensor 111 and total pressure sensor 112. The rapid pressure sensor 111 and total pressure sensor 112 both adopt pressure-sensitive sensors;

The sensor bracket 113 includes an outer side and an inner side. The sensor bracket 113 is arranged in the fluid to be measured, and the fluid flow rate outside the sensor bracket 113 is consistent with the flow rate of the fluid to be measured, and the fluid flow rate inside is zero. ; The speed pressure sensor 111 is arranged on the outside of the sensor bracket 113, the total pressure sensor 112 is arranged on the inside of the sensor bracket 113, and the horizontal heights of the speed pressure sensor 111 and the total pressure sensor 112 remain consistent. .

In this embodiment, one end of the sensor bracket 113 is closed 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:

Obtain the fluid pressure values at the speed pressure sensor 111 and the total pressure sensor 112 as p ₁ and p ₂ respectively;

Obtain the first equation regarding the pressure p ₁ , flow velocity v ₁ , and height h ₁ at the velocity pressure sensor 111 according to Bernoulli's equation;

Obtain a second equation regarding the pressure p ₂ , flow velocity v ₂ , and height h ₂ at the total pressure sensor 112 according to Bernoulli's equation;

The first equation and the second equation are combined, and according to the fact that the flow velocity v ₂ at the total pressure sensor 112 is zero and the height h ₁ at the speed pressure sensor 111 is equal to the height h ₂ at the total pressure sensor 112 , the speed pressure sensor 111 is calculated The flow velocity v ₁ at , and because the fluid flow velocity 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.

In this embodiment, the internal fluid velocity measurement process includes:

Obtain the fluid pressure values at the speed pressure sensor 111 and the total pressure sensor 112 as p ₁ and p ₂ respectively;

Then according to Bernoulli’s equation we can get: Where v ₁ is the flow velocity of the fluid at the velocity pressure sensor 111, ρ is the fluid density preset according to different types of fluids, g is the acceleration of gravity, h ₁ is the height of the velocity pressure sensor 111, and C is a constant;

Also according to Bernoulli’s equation: Where v ₂ is the flow rate of the fluid at the total pressure sensor 112, ρ is the density of the fluid, g is the acceleration of gravity, h ₂ is the height of the total pressure sensor 112, and C is a constant;

And because the horizontal heights of the speed pressure sensor 111 and the total pressure sensor 112 remain consistent, h ₁ =h ₂ , and the fluid flow rate inside the sensor bracket 113 is zero, that is, v ₂ =0, the above formula can be have to:

That is/> Thus, the flow rate of the fluid at the velocity pressure sensor 111 is obtained, 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, that is, the flow rate of the internal fluid is obtained.

In order to solve the above problems, as shown in Figure 2, the present invention also provides an internal fluid velocity measurement method, which includes:

S01: Obtain the fluid pressure values at the speed pressure sensor 111 and the total pressure sensor 112 as p ₁ and p ₂ respectively; wherein, the speed pressure sensor 111 and the total pressure sensor 112 are both installed in the fluid to be measured, and the speed pressure sensor The fluid flow rate at 111 is consistent with the flow rate of the fluid to be measured, and the fluid flow rate at the total pressure sensor 112 is zero. At the same time, the levels of the speed pressure sensor 111 and the total pressure sensor 112 are kept consistent;

S02: Obtain the first equation regarding the pressure p ₁ , flow velocity v ₁ , and height h ₁ at the velocity pressure sensor 111 according to Bernoulli's equation;

S03: Obtain the second equation regarding the pressure p ₂ , flow velocity v ₂ , and height h ₂ at the total pressure sensor 112 according to Bernoulli's equation;

S04: Combine the first equation and the second equation, and calculate the velocity pressure according to the fact that the flow velocity v ₂ at the total pressure sensor 112 is zero and the height h ₁ at the velocity pressure sensor 111 is equal to the height h ₂ at the total pressure sensor 112 The flow velocity v ₁ at the sensor 111 is obtained because the fluid flow velocity outside the sensor bracket 113 is consistent with the flow velocity of the fluid to be measured, that is, the flow velocity of the internal fluid is obtained.

The internal fluid speed measurement component 11 of the present invention obtains the pressure of the fluid flow position and the fluid static position through the speed pressure sensor 111 and the total pressure sensor 112 respectively; the corresponding internal fluid speed measurement method of the present invention is based on the obtained speed pressure sensor 111 and total pressure sensor. The pressure at 112, as well as Bernoulli's formula and simultaneous equations are used to calculate the flow rate of the internal fluid. The calculation process is simple and easy to operate.

In order to solve the above problems, the present invention also provides a data processing device 12, including:

Memory 122 and processor 121. The memory 122 is used to store a computer program. The processor 121 is used to execute the computer program stored in the memory 122, so that the terminal performs the above-mentioned internal fluid velocity measurement method. The processor 121 is configured according to The obtained fluid pressure p ₁ and p ₂ at the velocity pressure sensor 111 and the total pressure sensor 112 are obtained by using the internal fluid velocity measurement method to obtain the corresponding flow velocity data;

A communication unit, which is connected to the processor 121 .

In this embodiment, as shown in FIG. 3 , various components in the device are coupled together through a bus system 126 . It can be understood that the bus system 126 is used to implement connection communications between these components. In addition to the data bus, the bus system 126 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, the various buses are labeled bus system 126 in FIG. 3 .

In this embodiment, the data processing device 12 also includes an A/D chip 124. The A/D chip 124 is connected to the processor 121, and the A/D chip 124 is used to obtain the internal fluid velocity measurement method. The fluid pressure p ₁ and p ₂ at the speed pressure sensor 111 and the total pressure sensor 112 are converted into digital signals and transmitted to the processor 121. The digital signals have the advantages of strong anti-interference and easy processing, and are more convenient for the processor 121 Processing; more specifically, in this embodiment, as shown in FIG. 1 , the fluid pressure p ₁ and p ₂ at the velocity pressure sensor 111 and the total pressure sensor 112 of the internal fluid velocity measuring assembly 11 are measured through velocity pressure respectively. The signal transmission line 114 and the total voltage signal transmission line 115 are transmitted to the A/D chip 124; in this embodiment, the A/D chip 124 may not be used to obtain digital signals, and the analog signals may be directly transmitted to the processor 121 for processing.

In this embodiment, the data processing device 12 also includes a data compensation module 125. The obtained fluid pressures p ₁ and p ₂ at the speed pressure sensor 111 and the total pressure sensor 112 are compensated by the data compensation module 125 according to the temperature. Transmitted to the processor 121, this can eliminate the interference of temperature on pressure, making the flow rate data obtained more accurate.

It can be understood that the memory 122 may be a volatile memory 122 or a non-volatile memory 122, or may include both volatile and non-volatile memory 122. Among them, the non-volatile memory 122 may be a read-only memory 122 (ROM, Read Only Memory) or a programmable read-only memory 122 (PROM, Programmable Read-Only Memory), which is used as an external cache. By way of illustration but 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 the embodiments of the present invention is intended to include, but is not limited to, these and any other suitable categories of memory 122.

The memory 122 in the embodiment of the present invention is used to store various types of data to support the operation of the data processing device 12 . Examples of these data include: any executable program used to operate on the data processing device 12, such as the operating system 122a and the application program 122b; the operating system 122a includes various system programs, such as the framework layer, the core library layer, the driver layer, etc. , used to implement various basic services and handle hardware-based tasks. The application program 122b may include various application programs 122b for implementing various other application services. Implementing the internal fluid velocity measurement method provided by the embodiment of the present invention may be included in the application program 122b.

The methods disclosed in the above embodiments of the present invention can 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. During the implementation process, each step of the above method can be completed by instructions in the form of hardware integrated logic circuits or software in the processor 121 . The above-mentioned processor 121 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor can implement or execute each method, step and logical block diagram disclosed in the embodiment of the present invention. A general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the accessory optimization method provided by the embodiments of the present invention can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in a memory. The processor reads the information in the memory and completes the steps of the foregoing method in combination with its hardware.

Persons of ordinary skill in the art can understand that all or part of the steps to implement the above method embodiments can be completed by hardware related to computer programs. The aforementioned computer program can be stored in a computer-readable storage medium. When the program is executed, the steps including the above-mentioned method embodiments are executed; and the aforementioned storage media include: ROM, RAM, magnetic disks, optical disks and other media that can store program codes.

In the embodiments provided in this application, the memory may include read-only memory, random access memory, EEPROM, CD-ROM or other optical disk storage devices, magnetic disk storage devices or other magnetic storage devices, flash memory, U disk, mobile hard disk , or any other medium that can be used to store desired program code in the form of instructions or data structures that can be accessed by a computer. Also, any connection is properly termed a computer-readable medium. For example, if instructions are sent from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave, the coaxial Electrical cables, fiber optic cables, twisted pairs, DSL or wireless technologies such as infrared, radio and microwave are included in the definition of medium. However, it should be understood that computer readable and writable storage media and data storage media do not include connections, carrier waves, signals, or other transitory media, and are instead intended for non-transitory, tangible storage media. As used in the application, disks and optical disks include compact discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs. Disks usually copy data magnetically, while discs use lasers to copy data optically.

In order to solve the above problems, as shown in Figure 4, the present invention also provides a gas relay 1, including:

In the above-mentioned internal fluid speed measuring assembly 11, the sensor bracket 113 is arranged in the inner cavity of the gas relay 1, and the speed pressure sensor 111 and the total pressure sensor 112 are respectively arranged on the outside and inside of the sensor bracket 113;

The above-mentioned data processing device 12 , 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 present invention uses the above-mentioned internal fluid velocity measurement component 11 and method to present the flow velocity data in a parameterized manner through the pressure-sensitive sensor, which facilitates real-time transmission and recording, and provides a basis for subsequent prediction of abnormalities based on data trends and abnormal data. The reason for the invention of the backward problem is provided. At the same time, the internal fluid velocity measurement component 11 has a simple structure, is small and lightweight, and is very suitable for being placed in a gas relay 1 with limited internal space. In addition, it is low in cost and easy to produce, and is very suitable for mass manufacturing. ; And the pressure information at relevant positions collected by the pressure-sensitive sensor is also an important parameter to characterize the working status of the gas relay 1. While transmitting and recording the flow rate data in real time, it also transmits and records the relevant pressure information, further improving the ability to predict and analyze faults. , Furthermore, the entire internal fluid velocity measuring component 11 is a solid-state testing device, which is not easily damaged, has no wear and tear, and has a longer service life.

In this embodiment, as shown in Figure 4, the gas relay 1 also includes a host computer 13. The data processing device 12 sends the obtained flow rate data to the host computer 13 in real time through the communication unit 123, and uses the host computer 13 to Receiving real-time flow rate data and performing subsequent processing reduces the processing pressure of the gas relay body processor 121. At the same time, when an abnormality occurs in the gas relay body, the flow rate data will not be lost.

In this embodiment, the host computer 13 records, monitors and analyzes the obtained flow rate information in real time, and issues an alarm when an abnormality occurs in the flow rate data. In this way, the fault can be eliminated before it occurs and the gas relay 1 can be improved. Sensitivity and safety, in this embodiment, the host computer 13 is connected to the gas relay body through a data transmission line, or can also be wirelessly connected to the gas relay body through a wireless data transmission module.

In summary, the internal fluid velocity measurement component, method, data processing equipment and gas relay of the present invention present the flow velocity data in a parameterized manner through the pressure-sensitive sensor, thereby realizing real-time transmission and recording, and solving the existing problems. The gas relay 1 with a purely mechanical structure cannot record flow rate changes in real time, which is not conducive to fault prediction and fault analysis. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

The above embodiments only illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

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.