Internal fluid speed measurement assembly, method and data processing device and gas relay

Abstract

The application provides an internal fluid speed measuring assembly arranged in a gas relay to measure the internal fluid flow speed, comprising: a speed pressure sensor and a total pressure sensor, both of which are pressure sensitive sensors; a sensor support, which comprises an outer side and an inner side, is arranged in the fluid to be measured, and the fluid flow speed on the outer side is consistent with the flow speed of the fluid to be measured, and the fluid flow speed on the inner side is zero; the speed pressure sensor is arranged on the outer side of the sensor support, and the total pressure sensor is arranged on the inner side of the sensor support; the internal fluid speed measuring assembly, method and data processing equipment and the gas relay of the application present the flow speed data through the pressure sensitive sensor in a parameterized manner, realize real-time transmission and recording, and solve the problem that the existing gas relay with a pure mechanical structure cannot record the flow speed change in real time, which is not conducive to fault prediction and fault analysis.

Description

Technical Field

[0001] This invention relates to the field of gas relay technology, and in particular to an internal fluid velocity measurement component, method, data processing device, and gas relay. Background Technology

[0002] A gas relay, also known as a gas safety relay, is a component that uses the hot oil and gas flow generated during a transformer fault to activate the relay. It serves as a protective element for the transformer. The gas relay is installed in the pipeline between the oil conservator and the oil tank of the transformer. If a discharge fault occurs inside an oil-filled transformer, the discharge arc decomposes the transformer oil, producing various characteristic gases such as methane, acetylene, hydrogen, carbon monoxide, carbon dioxide, ethylene, and ethane. The more severe the fault, the greater the amount of gas. As these gases rise from inside the transformer to the upper oil conservator, they flow through the gas relay. If the amount of gas is small, it accumulates inside the gas relay, causing the float to descend and the normally open contact of the relay to close, triggering a warning signal for light gas protection. If the amount of gas is large, the oil and gas rush out rapidly through the gas relay, pushing the internal stop plate to close another set of normally open contacts. Heavy gas protection directly trips the relay protection, disconnecting the circuit breaker and disconnecting the faulty transformer.

[0003] Conventional gas relays use a purely mechanical structure, which cannot record the flow rate changes of the fluid inside the gas relay over a period of time. This is not conducive to the prediction of failures before they occur and the analysis of problems after they occur. At the same time, because the internal space of a gas relay is very limited, it is difficult to install conventional speed measuring components inside, and the service life is also difficult to meet the requirements. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide an internal fluid velocity measurement component, method, data processing device and gas relay, so as to solve the problem that the gas relay with pure mechanical structure in the prior art cannot record the flow velocity change in real time, which is not conducive to fault prediction and fault analysis.

[0005] To address the aforementioned technical problems, this invention provides an internal fluid velocity measuring component, disposed within the fluid pipeline of a gas relay for measuring the internal fluid velocity, comprising:

[0006] The rapid pressure sensor and the total pressure sensor are both pressure-sensitive sensors.

[0007] A sensor bracket includes an outer side and an inner side. The sensor bracket is disposed in the fluid to be measured, and the fluid velocity on the outer side of the sensor bracket is the same as the fluid velocity on the inner side, while the fluid velocity on the inner side is zero. The velocity pressure sensor is disposed on the outer side of the sensor bracket, and the total pressure sensor is disposed on the inner side of the sensor bracket, with the velocity pressure sensor and the total pressure sensor at the same horizontal height.

[0008] As a more preferred method, the internal fluid velocity measurement process includes:

[0009] The fluid pressure values ​​at the velocity pressure sensor and the total pressure sensor are obtained as p1 and p2, respectively.

[0010] The first equation is obtained based on Bernoulli's equation regarding the pressure p1, flow velocity v1, and height h1 at the velocity sensor.

[0011] The second equation is obtained based on Bernoulli's equation regarding the pressure p2, flow velocity v2, and height h2 at the total pressure sensor.

[0012] By combining the first and second equations, and considering that the flow velocity v2 at the total pressure sensor is zero and the height h1 at the velocity sensor is equal to the height h2 at the total pressure sensor, the flow velocity v1 at the velocity sensor is calculated. Since the fluid velocity outside the sensor bracket is the same as the flow velocity of the fluid to be measured, the flow velocity of the internal fluid is obtained.

[0013] As a preferred approach, the internal fluid velocity measurement process includes:

[0014] The fluid pressure values ​​at the velocity pressure sensor and the total pressure sensor are obtained as p1 and p2, respectively.

[0015] Then, according to Bernoulli's equation, we can obtain: Where v1 is the flow velocity of the fluid at the velocity-pressure sensor, ρ is the fluid density preset according to different types of fluid, g is the gravitational acceleration, h1 is the height of the velocity-pressure sensor, and C is a constant.

[0016] Similarly, according to Bernoulli's equation: Where v2 is the fluid velocity at the total pressure sensor, ρ is the fluid density, g is the gravitational acceleration, h2 is the height of the total pressure sensor, and C is a constant;

[0017] Furthermore, because the speed pressure sensor and the total pressure sensor are at the same horizontal level, the Furthermore, the fluid velocity inside the sensor bracket is zero, that is... Substituting into the above formula, we get:

[0018] , that is Thus, the flow velocity of the fluid at the velocity-pressure sensor is obtained. Since the flow velocity of the fluid outside the sensor bracket is the same as the flow velocity of the fluid to be measured, the flow velocity of the internal fluid is also obtained.

[0019] To address the above problems, the present invention also provides an internal fluid velocity measurement method, comprising:

[0020] The fluid pressure values ​​at the velocity sensor and the total pressure sensor are obtained as p1 and p2, respectively. The velocity sensor and the total pressure sensor are both placed in the fluid to be measured, and the fluid velocity at the velocity sensor is the same as the fluid velocity at the fluid to be measured, while the fluid velocity at the total pressure sensor is zero. At the same time, the velocity sensor and the total pressure sensor are kept at the same horizontal level.

[0021] The first equation is obtained based on Bernoulli's equation regarding the pressure p1, flow velocity v1, and height h1 at the velocity sensor.

[0022] The second equation is obtained based on Bernoulli's equation regarding the pressure p2, flow velocity v2, and height h2 at the total pressure sensor.

[0023] By combining the first and second equations, and considering that the flow velocity v2 at the total pressure sensor is zero and the height h1 at the velocity sensor is equal to the height h2 at the total pressure sensor, the flow velocity v1 at the velocity sensor is calculated. Since the fluid velocity outside the sensor bracket is the same as the flow velocity of the fluid to be measured, the flow velocity of the internal fluid is obtained.

[0024] To address the above problems, the present invention also provides a data processing device, comprising:

[0025] The device includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program stored in the memory to enable the data processing device to perform the aforementioned internal fluid velocity measurement method. The processor obtains corresponding flow velocity data based on the fluid pressures p1 and p2 at the velocity pressure sensor and the total pressure sensor using the internal fluid velocity measurement method.

[0026] A communication unit, which is connected to the processor.

[0027] As a more preferred approach, the data processing device further includes an A / D chip connected to the processor. The A / D chip measures the fluid pressures p1 and p2 at the velocity sensor and total pressure sensor in the aforementioned internal fluid velocity measurement method, and converts them into digital signals that are transmitted to the processor. Digital signals have advantages such as strong anti-interference and ease of processing, making them easier for the processor to process.

[0028] As a more preferred approach, the data processing device further includes a data compensation module. The fluid pressures p1 and p2 obtained from the velocity pressure sensor and the total pressure sensor are compensated for by the data compensation module based on temperature before being transmitted to the processor. This eliminates the interference of temperature on pressure and makes the obtained flow rate data more accurate.

[0029] To address the above problems, the present invention also provides a gas relay, comprising:

[0030] In the aforementioned internal fluid velocity measurement assembly, the sensor bracket is disposed within the inner cavity of the gas relay, and the velocity pressure sensor and the total pressure sensor are respectively disposed on the outer and inner sides of the sensor bracket;

[0031] The aforementioned data processing device includes a velocity pressure sensor and a total pressure sensor connected to the data processing device.

[0032] As a more preferred approach, 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. The host computer receives the real-time flow rate data and performs subsequent processing, which reduces the processing pressure on the gas relay's processor. At the same time, the flow rate data will not be lost when the gas relay malfunctions.

[0033] As a more preferred approach, the host computer records, monitors, and analyzes the acquired flow rate information in real time, and issues an alarm when the flow rate data is abnormal. This allows for troubleshooting before a fault occurs, improving the sensitivity and safety of the gas relay.

[0034] As described above, the internal fluid velocity measurement component, method, data processing device, and gas relay of the present invention have the following beneficial effects: The internal fluid velocity measurement component of the present invention obtains the pressure at the fluid flow position and the fluid stationary position through a velocity-pressure sensor and a total pressure sensor, respectively; the corresponding internal fluid velocity measurement method of the present invention calculates the internal fluid velocity by solving simultaneous equations based on the obtained pressure at the velocity-pressure sensor and the total pressure sensor, and Bernoulli's formula, which is simple and easy to operate; the processor of the data processing device of the present invention calculates the corresponding velocity data based on the fluid pressure p1 and p2 at the obtained velocity-pressure sensor and the total pressure sensor using the internal fluid velocity measurement method stored in the memory, which is simple, resource-saving, and easy to implement in hardware; the gas relay of the present invention uses the above-mentioned internal fluid velocity measurement component and method to present the velocity data in a parameterized manner through a pressure-sensitive sensor, which is convenient for real-time transmission and recording, and provides a basis for subsequent prediction of anomalies and root causes based on data trends. The invention provides a possibility for inferring the cause of the problem by working backward from the abnormal data; at the same time, the internal fluid velocity measurement component has a simple structure, small size and light weight, which is very suitable for placement in gas relays with limited internal space. In addition, it is inexpensive and easy to produce, making it very suitable for mass production; and the pressure information at the relevant location collected by the pressure sensor is also an important parameter characterizing the working state of the gas relay. Transmitting and recording relevant pressure information in real time while transmitting and recording flow velocity data further improves the ability to predict and analyze faults. Furthermore, the internal fluid velocity measurement component is a solid-state testing device, which is not easy to damage, has no wear, and has a longer service life. The internal fluid velocity measurement component, method and data processing device and gas relay of the present invention present the flow velocity data in a parameterized manner through the pressure sensor, realizing real-time transmission and recording. This solves the problem that the gas relay with the pure mechanical structure of the prior art cannot record flow velocity changes in real time, which is not conducive to fault prediction and fault analysis. Attached Figure Description

[0035] Figure 1 The diagram shows the installation of the internal fluid velocity measurement component of the present invention.

[0036] Figure 2 The diagram shown is a schematic representation of the internal fluid velocity measurement method of the present invention.

[0037] Figure 3 The diagram shown is a schematic diagram of the data processing device of the present invention.

[0038] Figure 4 The diagram shows the various modules of the gas relay of the present invention.

[0039] Component designation explanation

[0040] 1 Gas relay 11 Internal fluid velocity measurement components 111 Fast 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 app 123 Communication unit 124 A / D chip 125 Data compensation module 126 bus system 13 host computer Detailed Implementation

[0041] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0042] It should be noted that in the following description, reference is made to the accompanying drawings, which illustrate several embodiments of this application. It should be understood that other embodiments may also be used, and changes in mechanical composition, structure, electrical system, and operation may be made without departing from the spirit and scope of this application. The following detailed description should not be considered limiting, and the scope of the embodiments of this application is defined 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 limit the application. Spatially related terms, such as “upper,” “lower,” “left,” “right,” “below,” “below,” “lower part,” “above,” “upper part,” etc., may be used herein to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," and "holding" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] 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., used in the specification, claims, and accompanying drawings are for distinguishing similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data used can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising,” “including,” indicate the presence of the stated features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. It should be further understood that the terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” An exception to this definition will only occur if the combination of elements, functions, or operations is inherently mutually exclusive in some way.

[0045] To address the problems described in the background art, this invention provides a multi-internal fluid velocity measurement component, method, data processing device, and gas relay. The aim is to achieve real-time transmission and recording of fluid velocity data within the gas relay 1, solving the problem that existing gas relays with purely mechanical structures cannot record velocity changes in real time, which is detrimental to fault prediction and analysis. Furthermore, to make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0046] Before providing a further detailed description of the present invention, the nouns and terms used in the embodiments of the present invention are explained, and the nouns and terms used in the embodiments of the present invention are subject to the following interpretations:

[0047] <1> Bernoulli's equation: Bernoulli's equation, also known as "Bernoulli's principle," is a physics equation that states the relationship between pressure, velocity, and altitude of a fluid in fluid dynamics. It can be expressed by the formula:

[0048]

[0049] Let v be the velocity of the fluid at a point, ρ be the density of the fluid, g be the acceleration due to gravity, h be the altitude of the point, and C be a constant. This equation shows that during fluid flow, pressure, kinetic energy, and potential energy can be interconverted, 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 liquids in pipes and the airflow during aircraft flight.

[0050] like Figure 1 As shown, the present invention provides an internal fluid velocity measuring component 11, which is disposed inside the fluid pipeline of the gas relay 1 for measuring the internal fluid velocity, including:

[0051] The rapid pressure sensor 111 and the total pressure sensor 112 are both pressure-sensitive sensors.

[0052] A sensor bracket 113 includes an outer side and an inner side. The sensor bracket 113 is disposed in the fluid to be measured, and the fluid velocity on the outer side of the sensor bracket 113 is the same as the fluid velocity on the inner side, while the fluid velocity on the inner side is zero. A velocity pressure sensor 111 is disposed on the outer side of the sensor bracket 113, and a total pressure sensor 112 is disposed on the inner side of the sensor bracket 113, with the velocity pressure sensor 111 and the total pressure sensor 112 at the same horizontal height.

[0053] In this embodiment, the sensor bracket 113 is closed at one end or equipped with a stop structure so that the fluid flow velocity at the total pressure sensor 112 is zero.

[0054] In this embodiment, the internal fluid velocity measurement process includes:

[0055] The fluid pressure values ​​at the velocity pressure sensor 111 and the total pressure sensor 112 are obtained as p1 and p2, respectively.

[0056] The first equation is obtained based on Bernoulli's equation regarding the pressure p1, flow velocity v1, and height h1 at the velocity sensor 111;

[0057] The second equation is obtained based on Bernoulli's equation regarding the pressure p2, flow velocity v2, and height h2 at the total pressure sensor 112;

[0058] By combining the first and second equations, and considering that the flow velocity v2 at the total pressure sensor 112 is zero and the height h1 at the velocity sensor 111 is equal to the height h2 at the total pressure sensor 112, the flow velocity v1 at the velocity sensor 111 is calculated. Since the fluid velocity outside the sensor bracket 113 is the same as the velocity of the fluid to be measured, the flow velocity of the internal fluid is obtained.

[0059] In this embodiment, the internal fluid velocity measurement process includes:

[0060] The fluid pressure values ​​at the velocity pressure sensor 111 and the total pressure sensor 112 are obtained as p1 and p2, respectively.

[0061] Then, according to Bernoulli's equation, we can obtain: Where v1 is the flow velocity of the fluid at the velocity-pressure sensor 111, ρ is the fluid density preset according to different types of fluid, g is the gravitational acceleration, h1 is the height of the velocity-pressure sensor 111, and C is a constant.

[0062] Similarly, according to Bernoulli's equation: Where v2 is the fluid velocity at the total pressure sensor 112, ρ is the fluid density, g is the gravitational acceleration, h2 is the height of the total pressure sensor 112, and C is a constant;

[0063] Furthermore, because the speed pressure sensor 111 and the total pressure sensor 112 are at the same horizontal level, the Furthermore, the fluid velocity inside the sensor bracket 113 is zero, that is... Substituting into the above formula, we get:

[0064] , that is Thus, the flow velocity of the fluid at the velocity-pressure sensor 111 is obtained. Since the flow velocity of the fluid outside the sensor bracket 113 is the same as the flow velocity of the fluid to be measured, the flow velocity of the internal fluid is also obtained.

[0065] To solve the above problems, such as Figure 2 As shown, the present invention also provides an internal fluid velocity measurement method, comprising:

[0066] S01: Obtain the fluid pressure values ​​p1 and p2 at the velocity sensor 111 and the total pressure sensor 112, respectively; wherein, both the velocity sensor 111 and the total pressure sensor 112 are placed in the fluid to be measured, and the fluid velocity at the velocity sensor 111 is the same as the flow velocity of the fluid to be measured, while the fluid velocity at the total pressure sensor 112 is zero, and the horizontal height of the velocity sensor 111 and the total pressure sensor 112 is kept the same;

[0067] S02: Obtain the first equation regarding the pressure p1, flow velocity v1, and height h1 at the velocity sensor 111 based on Bernoulli's equation;

[0068] S03: Obtain the second equation regarding the pressure p2, flow velocity v2, and height h2 at the total pressure sensor 112 based on Bernoulli's equation;

[0069] S04: Solve the first equation and the second equation simultaneously. Since the flow velocity v2 at the total pressure sensor 112 is zero and the height h1 at the velocity sensor 111 is equal to the height h2 at the total pressure sensor 112, calculate the flow velocity v1 at the velocity sensor 111. Since the fluid velocity outside the sensor bracket 113 is the same as the flow velocity of the fluid to be measured, the flow velocity of the internal fluid is obtained.

[0070] The internal fluid velocity measurement component 11 of the present invention obtains the pressure at the fluid flow position and the fluid stationary position through the velocity pressure sensor 111 and the total pressure sensor 112, respectively. The corresponding internal fluid velocity measurement method of the present invention calculates the internal fluid velocity by solving simultaneous equations based on the obtained pressure at the velocity pressure sensor 111 and the total pressure sensor 112 and Bernoulli's formula. The calculation process is simple and easy to operate.

[0071] To address the above problems, the present invention also provides a data processing device 12, comprising:

[0072] The memory 122 is used to store computer programs, and the processor 121 is used to execute the computer programs stored in the memory 122 to enable the data processing device to execute the above-mentioned internal fluid velocity measurement method. The processor 121 obtains corresponding flow velocity data based on the fluid pressures p1 and p2 at the velocity pressure sensor 111 and the total pressure sensor 112 using the internal fluid velocity measurement method.

[0073] A communication unit is connected to the processor 121.

[0074] In this embodiment, as Figure 3 As shown, the various components in the device are coupled together via a bus system 126. It will be understood that the bus system 126 is used to enable communication between these components. In addition to a data bus, the bus system 126 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 3 The general labeled all buses as Bus System 126.

[0075] In this embodiment, the data processing device 12 further includes an A / D chip 124, which is connected to the processor 121. The A / D chip 124 is used to obtain the fluid pressures p1 and p2 at the velocity sensor 111 and the total pressure sensor 112 in the above-mentioned internal fluid velocity measurement method, and converts them into digital signals for transmission to the processor 121. Digital signals have advantages such as strong anti-interference and ease of processing, making them easier for the processor 121 to process. More specifically, in this embodiment, such as Figure 1As shown, the fluid pressures p1 and p2 at the velocity pressure sensor 111 and the total pressure sensor 112 of the internal fluid velocity measurement component 11 are transmitted to the A / D chip 124 via the velocity pressure signal transmission line 114 and the total pressure signal transmission line 115, respectively. In this embodiment, the A / D chip 124 may not be used to acquire digital signals, and the analog signals may be directly transmitted to the processor 121 for processing.

[0076] In this embodiment, the data processing device 12 further includes a data compensation module 125. The fluid pressures p1 and p2 at the velocity pressure sensor 111 and the total pressure sensor 112 are obtained and then transmitted to the processor 121 after being compensated for by the data compensation module 125 according to the temperature. This can eliminate the interference of temperature on the pressure and make the obtained flow rate data more accurate.

[0077] It is understood that memory 122 can be volatile memory 122 or non-volatile memory 122, or both. Non-volatile memory 122 can be read-only memory 122 (ROM) or programmable read-only memory 122 (PROM), which serves as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory 122 (SRAM) and synchronous static random access memory 122 (SSRAM). The memory 122 described in this embodiment is intended to include, but is not limited to, these and any other suitable categories of memory 122.

[0078] In this embodiment of the invention, the memory 122 is used to store various types of data to support the operation of the data processing device 12. Examples of this data include: any executable program for operation on the data processing device 12, such as operating system 122a and application program 122b; operating system 122a contains various system programs, such as framework layer, core library layer, driver layer, etc., for implementing various basic services and handling hardware-based tasks. Application program 122b may contain various other application programs 122b for implementing various other application services. The implementation of the internal fluid velocity measurement method provided in this embodiment of the invention can be included in application program 122b.

[0079] The methods disclosed in the above embodiments of the present invention can be applied to or implemented by processor 121. Processor 121 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in processor 121 or by instructions in the form of software. The 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 the methods, steps, and logic block diagrams disclosed in the embodiments 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 in the embodiments of the present invention can be directly reflected as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in a memory. The processor reads the information in the memory and combines it with its hardware to complete the steps of the aforementioned method.

[0080] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented using computer program-related hardware. The aforementioned computer program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0081] In the embodiments provided in this application, the memory may include read-only memory, random access memory, EEPROM, CD-ROM or other optical disc storage devices, disk storage devices or other magnetic storage devices, flash memory, USB flash drive, portable hard drive, or any other medium capable of storing desired program code in the form of instructions or data structures and accessible by a computer. Additionally, any connection may be appropriately referred to as a computer-readable medium. For example, if instructions are transmitted from a website, server, or other remote source using 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. 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 transient media, but are intended for non-transient, tangible storage media. The disks and optical discs used in the application include compact discs (CDs), laser discs, optical discs, digital multifunction discs (DVDs), floppy disks, and Blu-ray discs. Among these, disks typically copy data magnetically, while optical discs use lasers to copy data optically.

[0082] To solve the above problems, such as Figure 4 As shown, the present invention also provides a gas relay 1, comprising:

[0083] The aforementioned internal fluid velocity measurement assembly 11 has a sensor bracket 113 disposed in the inner cavity of the gas relay 1, and the velocity pressure sensor 111 and the total pressure sensor 112 are respectively disposed on the outer and inner sides of the sensor bracket 113.

[0084] The aforementioned data processing device 12, wherein the velocity pressure sensor 111 and the total pressure sensor 112 are connected to the data processing device 12.

[0085] The gas relay 1 of the present invention utilizes the aforementioned internal fluid velocity measurement component 11 and method to present flow velocity data in a parameterized manner through a pressure-sensitive sensor, facilitating real-time transmission and recording. This provides the possibility for subsequent anomaly prediction based on data trends and for deducing the cause of the problem based on anomaly data. Simultaneously, the internal fluid velocity measurement component 11 has a simple structure, small size, and is lightweight, making it ideal for placement in the gas relay 1 with limited internal space. Furthermore, it is inexpensive and easy to manufacture, making it suitable for mass production. The pressure information at relevant locations collected by the pressure-sensitive sensor is also an important parameter characterizing the working state of the gas relay 1. Simultaneously transmitting and recording relevant pressure information while transmitting and recording flow velocity data further improves the ability to predict and analyze faults. Moreover, the internal fluid velocity measurement component 11 is a solid-state testing device, making it less prone to damage, wear-free, and with a longer service life.

[0086] In this embodiment, as Figure 4 As shown, 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. The host computer 13 receives the real-time flow rate data and performs subsequent processing, which reduces the processing pressure of the gas relay body processor 121. At the same time, the flow rate data will not be lost when the gas relay body malfunctions.

[0087] In this embodiment, the host computer 13 records, monitors, and analyzes the acquired flow rate information in real time, and issues an alarm when the flow rate data is abnormal. This allows for troubleshooting before a fault occurs, improving the sensitivity and safety of the gas relay 1. In this embodiment, the host computer 13 is connected to the gas relay body via a data transmission line, or it can be wirelessly connected to the gas relay body via a wireless data transmission module.

[0088] In summary, the internal fluid velocity measurement component, method, data processing device, and gas relay of this invention present flow velocity data in a parameterized manner through a pressure-sensitive sensor, achieving real-time transmission and recording. This solves the problem that the gas relay 1, which uses a purely mechanical structure in the prior art, cannot record flow velocity changes in real time, thus hindering fault prediction and analysis. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0089] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A gas relay, characterized in that, include: An internal fluid velocity measurement component (11), a velocity pressure sensor (111), and a total pressure sensor (112) are installed inside the fluid pipeline. Both the velocity pressure sensor (111) and the total pressure sensor (112) are pressure-sensitive sensors. A sensor bracket (113) includes an outer side and an inner side. The sensor bracket (113) is disposed in the fluid to be measured, and the fluid velocity on the outer side of the sensor bracket (113) is the same as the fluid velocity on the inner side, while the fluid velocity on the inner side is zero. The velocity pressure sensor (111) is disposed on the outer side of the sensor bracket (113), and the total pressure sensor (112) is disposed on the inner side of the sensor bracket (113). The sensor bracket (113) is closed at one end so that the fluid velocity at the total pressure sensor (112) is zero, and the velocity pressure sensor (111) and the total pressure sensor (112) are at the same horizontal height. The sensor bracket (113) is disposed in the inner cavity of the gas relay (1), and the velocity pressure sensor (111) and the total pressure sensor (112) are respectively disposed on the outer side and the inner side of the sensor bracket (113). A data processing device (12) includes: a memory (122) and a processor (121), wherein the memory (122) stores a computer program, and the processor (121) executes the computer program stored in the memory (122) to cause the data processing device to perform an internal fluid velocity measurement method, wherein the processor (121) transmits the fluid pressures p1 and p2 acquired at the velocity pressure sensor (111) and the total pressure sensor (112) to the processor (121); and a communication unit connected to the processor (121) of the velocity pressure sensor (111). The data processing device (12) is connected to the total pressure sensor (111) and the total pressure sensor (112); the internal fluid velocity measurement method includes: obtaining the fluid pressure values ​​at the velocity sensor (111) and the total pressure sensor (112) as p1 and p2 respectively; wherein the velocity sensor (111) and the total pressure sensor (112) are both set in the fluid to be measured, and the fluid velocity at the velocity sensor (111) is consistent with the velocity of the fluid to be measured, the fluid velocity at the total pressure sensor (112) is zero, and the horizontal height of the velocity sensor (111) and the total pressure sensor (112) is kept consistent. The first equations for the pressure p1, flow velocity v1, and height h1 at the velocity sensor (111) are obtained based on Bernoulli's equations. The second equation is obtained based on Bernoulli's equation regarding the pressure p2, flow velocity v2, and height h2 at the total pressure sensor (112); By combining the first equation and the second equation, and based on the fact that the flow velocity v2 at the total pressure sensor (112) is zero and the height h1 at the velocity sensor (111) is equal to the height h2 at the total pressure sensor (112), the flow velocity v1 at the velocity sensor (111) is calculated. Since the fluid 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. The data processing device (12) further includes an A / D chip (124), which is connected to the processor (121). The A / D chip (124) is used to obtain the fluid pressures p1 and p2 at the speed pressure sensor (111) and the total pressure sensor (112) in the speed measurement method, and convert them into digital signals for transmission to the processor (121). The data processing device (12) also includes a data compensation module (125), which compensates for the fluid pressures p1 and p2 at the speed pressure sensor (111) and the total pressure sensor (112) according to temperature before transmitting them to the processor (121). 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). The host computer (13) records and monitors and analyzes the obtained flow rate information in real time, and alarms when the flow rate data is abnormal.

2. The gas relay according to claim 1, characterized in that: The internal fluid velocity measurement process includes: The fluid pressure values ​​at the velocity pressure sensor (111) and the total pressure sensor (112) are obtained as p1 and p2, respectively; The first equations for the pressure p1, flow velocity v1, and height h1 at the velocity sensor (111) are obtained based on Bernoulli's equations. The second equation is obtained based on Bernoulli's equation regarding the pressure p2, flow velocity v2, and height h2 at the total pressure sensor (112); By combining the first and second equations, and considering that the flow velocity v2 at the total pressure sensor (112) is zero and the height h1 at the velocity sensor (111) is equal to the height h2 at the total pressure sensor (112), the flow velocity v1 at the velocity sensor (111) is calculated. Since the fluid 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.

3. The gas relay according to claim 2, characterized in that: The internal fluid velocity measurement process includes: The fluid pressure values ​​at the velocity pressure sensor (111) and the total pressure sensor (112) are obtained as p1 and p2, respectively; Then, according to Bernoulli's equation, we can obtain: Where v1 is the flow velocity of the fluid at the velocity sensor (111), ρ is the fluid density preset according to different types of fluid, g is the gravitational acceleration, h1 is the height of the velocity sensor (111), and C is a constant. Similarly, according to Bernoulli's equation: Where v2 is the fluid velocity at the total pressure sensor (112), ρ is the fluid density, g is the gravitational acceleration, h2 is the height of the total pressure sensor (112), and C is a constant; Furthermore, because the speed pressure sensor (111) and the total pressure sensor (112) are at the same horizontal level, the And the fluid velocity inside the sensor bracket (113) is zero, that is Substituting into the above formula, we get: , that is Thus, the flow velocity of the fluid at the velocity-pressure sensor (111) is obtained. Since 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 also obtained.

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