Multi-path high-pressure density on-line monitoring alarm device

Abstract

The utility model discloses a multipath high pressure density on-line monitoring alarm device comprising a monitoring alarm body which comprises a housing face frame, a main control communication board, a wiring terminal board, a power supply relay board, and a liquid crystal display button board; the liquid crystal display key board is connected to the middle of the front face of the shell face frame in an embedded mode, the main control communication board is connected to one end of the inner side wall of the shell face frame in a threaded mode, the power supply relay board is connected to the other end of the inner side wall of the shell face frame in a threaded mode, and the wiring terminal board is connected to the middle of the back face of the shell face frame in a threaded mode. According to the utility model, three paths of pressure and temperature transmitters are cooperatively used, sampling data of pressure and density sensors of three paths of air chambers can be processed at the same time, and an RS485 data bus is adopted to actively upload data, so that address distinguishing of the transmitters is avoided, and exchange and after-sales maintenance of the transmitters are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of density relays, in particular to a multi-channel high-voltage density online monitoring and alarm device. Background Art

[0002] Density relay, as an indispensable part of the power system, is important for monitoring and controlling the gas density in power equipment. Due to its excellent insulation and arc extinguishing performance, it is widely used in high-voltage electrical equipment. It is mainly composed of elastic metal curved tubes, gear mechanisms and pointers, double-layer metal strips and other components. These components work together to achieve accurate measurement and control of gas density.

[0003] Existing density relays are generally mechanical pointer type, and data reading relies on manual meter reading. Manual data reading has large errors and low efficiency, resulting in unsatisfactory results in actual use, affecting actual use. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-channel high-voltage density online monitoring and alarm device to solve the problem raised in the above background technology that the existing density relays are generally mechanical pointer type, and the data is read by manual meter reading. The manual data reading has large errors and low efficiency, resulting in unsatisfactory results in actual use, affecting actual use.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a multi-channel high-voltage density online monitoring alarm device, comprising:

[0007] Monitoring alarm body, the monitoring alarm body includes a housing face frame, a main control communication board, a wiring terminal board, a power relay board, and a liquid crystal display keypad;

[0008] The LCD display keypad is inlaid and connected to the middle of the front face of the shell frame, and the main control communication board is threadedly connected to one end of the inner wall of the shell frame, the power relay board is threadedly connected to the other end of the inner wall of the shell frame, and the terminal board is threadedly connected to the middle of the back face of the shell frame.

[0009] Furthermore, the terminal board includes a panel and an RS485 communication interface;

[0010] The RS485 communication interfaces are provided with three, which are evenly distributed and connected to the central position of the panel.

[0011] Furthermore, the RS485 communication interface corresponds one-to-one with the external three-way pressure and temperature transmitter and is electrically connected via wires.

[0012] Furthermore, a touch screen is inlaid and connected in the middle of the front of the LCD keypad, an indicator light is inlaid and connected at one end of the front of the LCD keypad, and a control button is inlaid and connected at the other end of the front of the LCD keypad.

[0013] Furthermore, the indicator lights are arranged in two groups, and the number of the indicator lights in one group is two, and the number of the indicator lights in the other group is three.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] The utility model electrically connects the monitoring alarm body with an external three-way pressure and temperature transmitter to realize all-weather monitoring of the pressure and density status of multiple gas chambers. It has the function of digitally displaying the equivalent pressure (density) value after temperature compensation and the automatic alarm output of two-stage gas leakage decompression. It can complete data upload and graphic curve analysis through the RS485 communication interface, providing very convenient conditions for the status inspection and online monitoring of high-voltage equipment. The data receiving mode is active data reception, and bus address distinction is not required, which avoids transmitter address distinction and facilitates transmitter interchange and after-sales maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is the appearance diagram of the utility model;

[0018] Figure 2 It is an internal cross-sectional view of the utility model;

[0019] Figure 3 It is the working circuit diagram of the utility model;

[0020] Figure 4 Amplify the working circuit of the utility model Figure 1 ;

[0021] Figure 5 Amplify the working circuit of the utility model Figure 2 ;

[0022] Figure 6 Amplify the working circuit of the utility model Figure 3 ;

[0023] Figure 7 Amplify the working circuit of the utility model Figure 4 ;

[0024] Figure 8 Amplify the working circuit of the utility model Figure 5 ;

[0025] Fig. 9 Amplify the working circuit of the utility model Figure 6 ;

[0026] Fig.10 It is a flowchart of the work flow of the utility model.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 11. Shell face frame; 12. Main control communication board; 13. Wiring terminal board; 14. Power relay board; 15. LCD display keypad; 16. Touch screen; 17. Operation buttons; 18. Indicator light. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0031] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] See also Figure 1-10 As shown, this embodiment is a multi-channel high-voltage density online monitoring alarm device, comprising:

[0033] Monitoring alarm body, the monitoring alarm body includes a housing face frame 11, a main control communication board 12, a wiring terminal board 13, a power relay board 14, and a liquid crystal display key board 15;

[0034] The liquid crystal display keypad 15 is embedded and connected to the middle of the front surface of the housing frame 11, and the main control communication board 12 is threadedly connected to one end of the inner wall of the housing frame 11, the power relay board 14 is threadedly connected to the other end of the inner wall of the housing frame 11, and the terminal board 13 is threadedly connected to the middle of the back surface of the housing frame 11;

[0035] The housing face frame 11 is the main mounting carrier of the monitoring alarm body and provides external isolation protection capability. The main control communication board 12 is used for data transmission and decoding, and performs signal conversion and processing. The terminal board 13 is used for external connection lines for data transmission. The power relay board 14 is used for power disconnection protection. The LCD display keypad 15 is used for data display and data command control.

[0036] The terminal board 13 includes a panel and an RS485 communication interface;

[0037] There are three RS485 communication interfaces, which are evenly spaced and connected in the center of the panel;

[0038] The RS485 communication interface corresponds to the external three-way pressure and temperature transmitters one by one and is electrically connected through wires;

[0039] The RS485 communication interface electrically connects the monitoring alarm body with the external three-way pressure and temperature transmitter through the bus for data transmission, and can monitor and display the three-way air pressure, temperature and density in real time;

[0040] A touch screen 16 is embedded in the middle of the front of the LCD keypad 15, an indicator light 18 is embedded in one end of the front of the LCD keypad 15, and a control button 17 is embedded in the other end of the front of the LCD keypad 15;

[0041] The touch screen 16 is used to display data and to control commands in cooperation with the control button 17, and the indicator light 18 is used to indicate the partition alarm and the operation status;

[0042] The indicator lights 18 are arranged in two groups, and the number of the indicator lights 18 in one group is two, and the number of the indicator lights 18 in the other group is three;

[0043] Working principle: The monitoring alarm body is electrically connected to the corresponding three-way pressure and temperature transmitter via the RS485 communication interface via the bus, and the pressure, temperature and density are monitored through the three-way pressure and temperature transmitter, and uploaded through the RS485 communication interface, and displayed in real time through the touch screen 16, and the three-way data is judged at the same time and the alarm and locking contact output are made accordingly;

[0044] This solution can realize all-weather monitoring of the pressure and density status of multiple gas chambers. It has the function of digitally displaying the equivalent pressure (density) value after temperature compensation and automatic alarm output for two-stage gas leakage decompression. It can complete data upload and graphic curve analysis through the RS485 communication interface, providing very convenient conditions for the status inspection and online monitoring of high-voltage equipment. The data receiving method is active data reception, which does not require bus address distinction, avoids transmitter address distinction, and facilitates transmitter interchange and after-sales maintenance.

[0045] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. Multi-channel high-voltage density online monitoring and alarm device, characterized in that: include: A monitoring alarm body, the monitoring alarm body comprising a housing face frame (11), a main control communication board (12), a wiring terminal board (13), a power relay board (14), and a liquid crystal display keypad (15); The liquid crystal display keypad (15) is embedded and connected to the middle part of the front face of the shell frame (11), and the main control communication board (12) is threadedly connected to one end of the inner wall of the shell frame (11), the power relay board (14) is threadedly connected to the other end of the inner wall of the shell frame (11), and the terminal board (13) is threadedly connected to the middle part of the back face of the shell frame (11).

2. The multi-channel high-voltage density online monitoring alarm device according to claim 1 is characterized in that: The wiring terminal board (13) comprises a panel and an RS485 communication interface; The RS485 communication interfaces are provided with three, which are evenly distributed and connected to the central position of the panel.

3. The multi-channel high-voltage density online monitoring alarm device according to claim 2 is characterized in that: The RS485 communication interface corresponds one to one with the external three-way pressure and temperature transmitters and is electrically connected via wires.

4. The multi-channel high-voltage density online monitoring alarm device according to claim 1 is characterized in that: A touch screen (16) is inlaid and connected in the middle of the front of the liquid crystal display keypad (15), an indicator light (18) is inlaid and connected at one end of the front of the liquid crystal display keypad (15), and a control key (17) is inlaid and connected at the other end of the front of the liquid crystal display keypad (15).

5. The multi-channel high-voltage density online monitoring alarm device according to claim 4 is characterized in that: The indicator lights (18) are arranged in two groups, with one group having two indicator lights (18) and the other group having three indicator lights (18).

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