A mixed gas concentration monitoring device

Abstract

The utility model discloses a kind of mixed gas concentration monitoring devices, belong to gas concentration measurement technical field, this one kind mixed gas concentration monitoring device, including shell component, air chamber component and processing circuitry.This application takes shell component as carrier, and air chamber component is arranged in shell enough component, based on air chamber component can realize the installation of sensor assembly and joint component, when working, the gas to be monitored is input into sensor assembly via the passage in joint component, obtains monitoring data by sensor assembly and is further analyzed and processed by processing circuitry, the concentration monitoring of mixed gas can be realized, monitoring device is simple and convenient to install, convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of gas concentration measurement technology, and specifically relates to a mixed gas concentration monitoring device. Background Technology

[0002] Monitoring the proportion of SF6 / N2 mixed gas is a core aspect of the safe operation of power equipment. The volume percentage of SF6 in the mixed gas is usually 30%. If the proportion decreases, the insulation strength will drop significantly, which may cause discharge faults. Therefore, it is necessary to monitor the concentration of SF6 in real time.

[0003] Currently, there are relatively complete technical solutions on the market for monitoring the concentration ratio of SF6 / N2 mixed gas, but the equipment is complex and difficult to meet daily monitoring needs. Utility Model Content

[0004] The purpose of this invention is to provide a mixed gas concentration monitoring device to solve the problem that existing monitoring equipment mentioned in the background art is difficult to meet daily needs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mixed gas concentration monitoring device, comprising: Shell components; The sensor assembly is housed within the housing component; The air chamber component is disposed within the housing component and serves as the mounting carrier for the sensor assembly; The processing circuit is housed within the housing component and connected to the sensor assembly; The connector component has a channel for gas flow and is connected to the gas chamber component, and the channel in the connector component is connected to the sensor assembly.

[0006] Furthermore, the air chamber component has a first end face and a second end face in the height direction of the housing component, the first end face being configured as the mounting surface of the sensor assembly, and the second end face being configured as the mounting surface of the connector component.

[0007] Furthermore, the sensor assembly includes a first sensor and a second sensor, and the first end face is provided with a first mounting hole for mounting the first sensor and a second mounting hole for mounting the second sensor.

[0008] Furthermore, the sensor assembly includes a first sensor and a second sensor, and the first end face is provided with a first mounting hole for mounting the first sensor and a second mounting hole for mounting the second sensor.

[0009] Furthermore, the second end face is provided with a third assembly hole for installing the connector component, and the third assembly hole, the first assembly hole, and the second assembly hole are connected through a connecting hole in the air chamber component.

[0010] Furthermore, a window is provided on the side wall of the housing component, and the monitoring device also includes a screen structure assembled at the window position of the housing component, and the screen structure is connected to the processing circuit.

[0011] Furthermore, the monitoring device also includes a valve body component, which has a first interface connected to the connector component and a second interface connected to an external device to be tested.

[0012] Furthermore, the valve body component also has a third interface for connecting to external calibration equipment.

[0013] Furthermore, a gas filter assembly is provided within the channel of the connector component.

[0014] Furthermore, the screen structure includes a viewing window component mounted on the outer end of the window and a screen component mounted on the inner end of the window.

[0015] Compared with the prior art, the beneficial effects of this utility model are: The measuring device of this application uses a housing component as a carrier and sets up a gas chamber component inside the housing component. The sensor component and the connector component can be installed based on the gas chamber component. During operation, the gas to be monitored is input into the sensor component through the channel in the connector component. The sensor component obtains the monitoring data and the processing circuit further analyzes and processes it to realize the concentration monitoring of the mixed gas. The monitoring device is simple and convenient to install and easy to use. Attached Figure Description

[0016] Figure 1 An overall view of the monitoring device; Figure 2 Exploded view of the monitoring device; Figure 3 Exploded view of the joint component; Figure 4 This is a partial schematic diagram of the monitoring device; Figure 5 This is a cross-sectional view of the air chamber component.

[0017] In the picture: 100. Shell component; 101. Shell; 102. Cover; 103. Window; 200. Screen component; 201. Fixing plate; 202. Window component; 203. Mounting plate; 300, air chamber component; 300a, first end face; 300b, second end face; 301, first mounting hole; 302, second mounting hole; 303, third mounting hole; 304, connecting hole; 400. Processing circuit; 401. Network port connector; 402. Power connector; 500. Connector component; 501. Filter assembly; 502. Molecular sieve; 503. Teflon membrane; 600, Valve body component; 600a, First interface; 600b, Second interface; 600c, Third interface; 700, First sensor; 701, Second sensor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] A mixed gas concentration monitoring device (hereinafter referred to as the monitoring device), referring to Figure 1 The device includes a housing component 100, which is made of, for example, aluminum alloy and is configured as a hollow structure, that is, the housing component 100 defines a space for accommodating the remaining components of the monitoring device. In some embodiments, the housing component 100 is generally configured as a cuboid housing and is composed of a cover 102 and a housing 101 that are detachably connected. The cover 102 is assembled to the open end of the cover 102 by fasteners such as bolts, and a rubber sealing ring is arranged at the bolt mounting position to achieve a waterproof seal. Exemplarily, the housing 101 has a countersunk bolt hole on the end face away from the cover 102 to cooperate with the countersunk bolt to connect the cover 102 and the housing 101. In some embodiments, the housing 101 has a groove on the contact surface with the cover 102 to accommodate the rubber sealing ring for waterproof sealing between the housing 101 and the cover 102.

[0020] Reference Figure 2 and combined Figure 1The aforementioned housing component 100 has a window 103 on its side wall. For example, the window 103 is formed on the cover 102. Correspondingly, the aforementioned monitoring device also includes a screen structure assembled at the window 103 position of the housing component 100. Specifically, the screen structure includes a screen component 200 and a window component 202 made of, for example, acrylic material. The window component 202 is assembled to the outer end of the window 103 of the cover 102 (i.e., the end away from the inner section of the housing component 100) by a mounting plate 203, and the mounting plate 203 is connected to the housing component 100 by adhesive bonding. The screen component 200 is assembled to the inner end of the window 103 of the cover 102 by a fixing plate 201. During assembly, the screen component 200 is installed on the fixing plate 201 by screws, and then the fixing plate 201 is installed on the housing component 100 by screws. The contact surfaces of the fixing plate 201 and the housing component 100 are insulated and protected by polytetrafluoroethylene gaskets.

[0021] Continue to refer to Figure 2 and combined Figure 4 The aforementioned monitoring device also includes an air chamber component 300 disposed within the housing component 100, which is assembled to the bottom wall of the housing component 100 by fasteners such as bolts. Figure 2 (Based on the center direction), in some embodiments, the air chamber component 300 has a first end face 300a and a second end face 300b in the height direction of the housing component 100. The second end face 300b of the air chamber component 300 and the bottom wall of the housing component 100 are respectively provided with threaded holes. The connection between the air chamber component 300 and the housing component 100 is achieved by screwing in fasteners such as bolts. In some embodiments, the second end face 300b of the air chamber component 300 is provided with a groove for accommodating a sealing ring to achieve a waterproof seal between the contact surfaces of the air chamber component 300 and the housing component 100.

[0022] Reference Figure 5The aforementioned monitoring device further includes a sensor assembly composed of multiple sensors. Exemplarily, the sensor assembly includes a first sensor 700 and a second sensor 701, wherein the first sensor 700 is a density sensor and the second sensor 701 is a temperature and pressure integrated sensor. The first end face 300a of the aforementioned air chamber component 300 serves as the mounting surface of the sensor assembly. Exemplarily, the air chamber component 300 has a first mounting hole 301 and a second mounting hole 302 extending along the height direction of the housing component 100 on its first end face 300a. The first mounting hole 301 serves as the mounting hole for the first sensor 700, and the second mounting hole 302 serves as the mounting hole for the second sensor 701. Exemplarily, both the first mounting hole 301 and the second mounting hole 302 have pipe thread structures. The first sensor 700 and the second sensor 701 are fixed to the air chamber component 300 by pipe threads. In some embodiments, the first mounting hole 301 and the second mounting hole 302 are spaced apart in a first direction.

[0023] In some embodiments, the air chamber component 300 is provided with a third mounting hole 303 extending along the height direction of the housing component 100 on the second end face 300b, and the air chamber component 300 is provided with a connecting hole 304. The third mounting hole 303 communicates with the first mounting hole 301 and the second mounting hole 302 through the connecting hole 304. For example, the connecting hole 304 is configured as a through hole extending along the first direction, and the two ends of the through hole are closed by plugs.

[0024] In some embodiments, the monitoring device further includes a processing circuit 400 disposed within the housing member 100. Exemplarily, the processing circuit 400 is disposed between the fixed plate 201 and the gas chamber member 300 in the width direction of the housing member 100, and is connected to the first sensor 700, the second sensor 701, and the screen member 200. The processing circuit 400 is used to power and acquire signals from the sensors, as well as to power and transmit signals to the screen, and can perform calculations to obtain the gas concentration. The calculation process of the mixed gas concentration based on the density sensor and the temperature and pressure sensor is described in patent CN117347571A. In some embodiments, the processing circuit 400 is also provided with a buzzer. When the normal operating parameters of the gas are set to a range, a local audible and visual alarm can be realized through the buzzer and the display screen when the range is exceeded.

[0025] Reference Figure 2The aforementioned monitoring device further includes a connector component 500, which extends along a third direction and has a channel for gas flow. One end of the connector component 500 is threadedly connected to a third mounting hole 303, and the other end extends through the housing component 100, serving as the input end for the gas from the external device to be tested. The connector component 500 contains a gas filter assembly 501 for filtering out fine particles and corrosive gases from the gas being monitored, thus protecting the internal sensor. The removable design, such as the threaded connection, facilitates subsequent replacement of the filter material and maintenance of the filter. For example, see [reference to...] Figure 3 The gas filtration assembly 501 is composed of a molecular sieve 502 and a Teflon membrane 503.

[0026] Reference Figure 2 The aforementioned monitoring device also includes a valve body component 600, which has a first interface 600a connected to the third mounting hole 303 and a second interface 600b connected to an external device under test. During monitoring, the gas to be monitored enters the housing component 100 from the user equipment, enabling online monitoring of gas parameters. In some embodiments, the valve body component 600 also has a third interface 600c connected to an external calibration device. During calibration, non-working gas inside the monitoring device can be removed by a vacuum pump, and a mixed gas with the same parameters as the device under test can be introduced to quickly enter the working state. At this time, the valve body component 600 is configured as a three-way valve, and the connection state of the valve body component 600 can be controlled by the handle on the valve body component 600. That is, the first interface 600a and the second interface 600b can be connected by the handle, or the first interface 600a and the third interface 600c can be connected to switch the operating state of the monitoring device.

[0027] Reference Figure 2 The monitoring device also includes components mounted on the sidewall of the housing member 100 (e.g., Figure 2 The network connector 401 and power connector 402 are located on the front wall of the middle shell component 100.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mixed gas concentration monitoring device, characterized in that, include: Shell component (100); The sensor assembly is disposed within the housing member (100); The air chamber component (300) is disposed within the housing component (100) and serves as the mounting carrier for the sensor assembly; A processing circuit (400) is disposed within the housing component (100) and connected to the sensor assembly; The connector component (500) has a channel for gas flow and is connected to the gas chamber component (300), and the channel in the connector component (500) is connected to the sensor assembly.

2. The mixed gas concentration monitoring device according to claim 1, characterized in that: The air chamber component (300) has a first end face (300a) and a second end face (300b) in the height direction of the housing component (100). The first end face (300a) is configured as the mounting surface of the sensor assembly, and the second end face (300b) is configured as the mounting surface of the connector component (500).

3. The mixed gas concentration monitoring device according to claim 2, characterized in that: The sensor assembly includes a first sensor (700) and a second sensor (701). The first end face (300a) is provided with a first mounting hole (301) for mounting the first sensor (700) and a second mounting hole (302) for mounting the second sensor (701).

4. The mixed gas concentration monitoring device according to claim 3, characterized in that: The second end face (300b) is provided with a third mounting hole (303) for mounting the connector component (500), and the third mounting hole (303), the first mounting hole (301), and the second mounting hole (302) are connected through a connecting hole (304) in the air chamber component (300).

5. The mixed gas concentration monitoring device according to claim 1, characterized in that: A window (103) is provided on the side wall of the housing component (100), and the monitoring device further includes a screen structure assembled at the window (103) position of the housing component (100), and the screen structure is connected to the processing circuit (400).

6. The mixed gas concentration monitoring device according to claim 1, characterized in that: The monitoring device further includes a valve body component (600), which has a first interface (600a) connected to the connector component (500) and a second interface (600b) connected to an external device to be tested.

7. A mixed gas concentration monitoring device according to claim 6, characterized in that: The valve body component (600) also has a third interface (600c) for connecting to an external calibration device.

8. The mixed gas concentration monitoring device according to claim 1, characterized in that: The connector component (500) is provided with a gas filter assembly (501) in its channel.

9. A mixed gas concentration monitoring device according to claim 5, characterized in that: The screen structure includes a window component (202) mounted on the outer end of the window (103) and a screen component (200) mounted on the inner end of the window (103).

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