A multi-level alarm device

Abstract

This utility model discloses a multi-level alarm device, relating to the field of power engineering technology. It includes a main component comprising a rotating part, a fixing part disposed on the outer wall of the rotating part, an opening / closing part disposed inside the fixing part, an adsorption part disposed on the outer wall of the rotating part, and a housing disposed outside the rotating part. The rotating part includes a support frame, and the fixing part is disposed on the outer wall of the support frame. By setting a baffle, the rotation angle of the baffle triggers permanent magnets at different positions to approach a reed switch, achieving graded alarms. The signal is transmitted to a display screen through a signal processing module, intuitively displaying the alarm level. This facilitates timely detection of transformer fault conditions and allows for timely intervention, effectively preventing serious electrical faults in transformers, reducing economic losses, and enhancing the safety and reliability of the power system.

Description

Technical Field

[0001] This utility model relates to the field of power engineering technology, and in particular to a multi-level alarm device. Background Technology

[0002] Gas relays, as an important non-electrical protection device, are widely used in oil-immersed transformers and are installed in the pipeline between the transformer's oil conservator and oil tank. Their main function is to quickly detect gas and surging oil flow generated by internal transformer faults, issuing alarm signals or triggering tripping actions, thereby protecting the transformer from damage caused by serious electrical faults.

[0003] Traditional QJ-type gas relays typically employ a single heavy gas alarm mechanism, with a limited display format for the alarm signal, usually represented by a switch value of "0" or "1". This fails to visually demonstrate the fault development process, only indicating that the transformer has already experienced a serious fault, without providing early or intermediate-stage fault warnings. As a result, operators often struggle to detect potential problems in transformer operation in a timely manner, leading to further deterioration of the fault.

[0004] Based on the above problems, we propose a multi-level alarm device. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is: how to realize a multi-level alarm mechanism by improving the structure and function of the gas relay during transformer operation, so as to accurately reflect the development process of early, middle and serious faults of the transformer.

[0006] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a multi-level alarm device, which includes a main component, including a rotating component, a fixing component disposed on the outer wall of the rotating component, an opening and closing component disposed inside the fixing component, an adsorption component disposed on the outer wall of the rotating component, and a housing disposed outside the rotating component; the rotating component includes a support frame, and the fixing component is disposed on the outer wall of the support frame.

[0007] In a preferred embodiment of the multi-level alarm device of this utility model: a rotating shaft is provided through the outer wall of the support frame, and a baffle is provided on the outer wall of the rotating shaft.

[0008] In a preferred embodiment of the multi-level alarm device of this utility model: the fixing member includes a stabilizing plate disposed on the outer wall of the support frame, and the outer wall of the stabilizing plate is provided with a plurality of sleeves.

[0009] In a preferred embodiment of the multi-level alarm device of this utility model: the opening and closing element includes a primary reed switch, a secondary reed switch and a tertiary reed switch disposed in the plurality of sleeves.

[0010] In a preferred embodiment of the multi-level alarm device of this utility model: the first-level reed switch, the second-level reed switch and the third-level reed switch are all provided with a first reed and a second reed inside.

[0011] In a preferred embodiment of the multi-level alarm device of this utility model: the adsorption element includes a first bracket and a second bracket disposed on the outer wall of the baffle.

[0012] In a preferred embodiment of the multi-level alarm device of this utility model: the outer wall of the baffle is provided with a first permanent magnet, the outer wall of the first bracket is provided with a second permanent magnet, and the outer wall of the second bracket is provided with a third permanent magnet.

[0013] In a preferred embodiment of the multi-level alarm device of this utility model: the outer wall of the support frame is provided with a bottom plate, the outer wall of the bottom plate is provided with a protruding plate, and the protruding plate is movably engaged with the baffle.

[0014] In a preferred embodiment of the multi-level alarm device of this utility model: the outer wall of the housing is provided with a terminal box, the inner wall of the terminal box is provided with a specific terminal and a common terminal, the specific terminal is connected to the first reed switch through a signal transmission line, one end of the common terminal is connected to the second reed switch through a signal transmission line, and the other end is connected to a signal processing module.

[0015] In a preferred embodiment of the multi-level alarm device of this utility model: an observation window is provided on the outer wall of the housing, and an oil flow channel interface is provided on the outer wall of the housing.

[0016] The beneficial effects of this utility model are as follows: by setting up a baffle, the rotation angle of the baffle triggers permanent magnets at different positions to approach the reed switch, thereby realizing graded alarms. The signal is transmitted to the display screen through the signal processing module, which intuitively displays the alarm level, making it easier for staff to detect transformer fault status in a timely manner and take measures, thereby effectively avoiding serious electrical faults in transformers, reducing economic losses, and enhancing the safety and reliability of the power system. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein:

[0018] Figure 1 A schematic diagram of the overall structure of the alarm device is shown;

[0019] Figure 2 A schematic diagram of the internal connection structure of the alarm device is shown;

[0020] Figure 3 A schematic diagram of the opening and closing component connection structure is shown;

[0021] Figure 4 A schematic diagram of the three-level alarm baffle's operating structure is shown;

[0022] Figure 5 A schematic diagram of the operating structure of the secondary alarm baffle is shown;

[0023] Figure 6 A schematic diagram of the operating structure of the first-level alarm baffle is shown;

[0024] Figure 7 A flowchart of signal processing is shown. Detailed Implementation

[0025] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0026] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0027] Reference Figures 1 to 7 This embodiment provides a multi-level alarm device, including a main component 1, including a rotating member 11, which can rotate at an angle according to the magnitude of the oil flow impact force, thereby triggering alarm signals of different levels; a fixing member 12 disposed on the outer wall of the rotating member 11, the fixing member 12 being fixedly connected to the outer wall of the rotating member 11; an opening and closing member 13 disposed inside the fixing member 12, the closed state of the opening and closing member 13 being used to transmit alarm signals of different levels, realizing the functions of three-level, two-level and one-level alarms; an adsorption member 14 disposed on the outer wall of the rotating member 11, the adsorption member 14 being fixedly installed on the outer wall of the rotating member 11; and a housing 15 disposed outside the rotating member 11; the rotating member 11 includes a support frame 111, and the fixing member 12 is fixedly disposed on the outer wall of the support frame 111.

[0028] As an alternative embodiment, such as Figure 2As shown, a rotating shaft 112 is provided through the outer wall of the support frame 111. The rotating shaft 112 is movably connected to the support frame 111. The support frame 111 provides stable support for the rotation of the rotating shaft 112. A baffle 113 is provided on the outer wall of the rotating shaft 112. The baffle 113 is fixedly installed on the outer wall of the rotating shaft 112 and can move synchronously with the rotation of the rotating shaft 112. When a fault occurs inside the transformer, the surging oil flow impacts the baffle 113, which can cause the baffle 113 and the rotating shaft 112 to rotate.

[0029] As an alternative embodiment, such as Figure 2 and Figure 3 As shown, the fastener 12 includes a stabilizing plate 121 disposed on the outer wall of the support frame 111. The stabilizing plate 121 is preferably U-shaped and is fixedly disposed on the outer wall of the support frame 111. The outer wall of the stabilizing plate 121 is provided with a plurality of sleeves 122, preferably three sleeves, all of which are fixedly disposed on the outer wall of the stabilizing plate 121.

[0030] As an alternative embodiment, such as Figure 2 As shown, the opening and closing component 13 includes a primary reed switch 131, a secondary reed switch 132, and a tertiary reed switch 133 disposed in several sleeves 122. The inner walls of the three sleeves 122 are used to fix the primary reed switch 131, the secondary reed switch 132, and the tertiary reed switch 133, respectively. The sleeves 122 can effectively isolate each reed switch to prevent mutual interference and facilitate the precise installation and positioning of the reed switches.

[0031] As an alternative embodiment, such as Figure 4 As shown, the first-stage reed switch 131, the second-stage reed switch 132 and the third-stage reed switch 133 are each equipped with a first reed 134 and a second reed 135. When the permanent magnet approaches the corresponding reed switch, the first reed 134 and the second reed 135 close due to the magnetic field, forming a closed circuit, thereby triggering the corresponding alarm signal.

[0032] As an alternative embodiment, such as Figure 6 As shown, the adsorption member 14 includes a first bracket 141 and a second bracket 142 disposed on the outer wall of the baffle 113. The first bracket 141 and the second bracket 142 are respectively used to fix the second permanent magnet 144 and the third permanent magnet 145. The lengths of the first bracket 141 and the second bracket 142 are different, with the length of the second bracket 142 being greater than the length of the first bracket 141, in order to adapt to the rotation requirements of the baffle 113 at different angles.

[0033] As an alternative embodiment, such as Figure 6As shown, the outer wall of the baffle 113 is provided with a first permanent magnet 143, which is directly fixed to the outer wall of the baffle 113. The outer wall of the first bracket 141 is provided with a second permanent magnet 144, which is fixed to the outer wall of the first bracket 141 and is perpendicular to the baffle 113. The outer wall of the second bracket 142 is provided with a third permanent magnet 145, which is fixed to the outer wall of the second bracket 142 and is perpendicular to the baffle 113.

[0034] As an alternative embodiment, such as Figures 2-6 As shown, the outer wall of the support frame 111 is provided with a base plate 114, which is fixedly connected to the support frame 111; the outer wall of the base plate 114 is fixedly provided with a protruding plate 115, which is movably engaged with the baffle 113. The protruding plate 115 can limit the rotation of the baffle 113 and prevent the baffle 113 from overturning.

[0035] As an optional embodiment, the outer wall of the housing 15 is provided with a terminal box 151, and the inner wall of the terminal box 151 is provided with a specific terminal 152 and a common terminal 153. The specific terminal 152 is connected to the first reed 134 through a signal transmission line 154 and is responsible for receiving the first signal when the reed is closed. One end of the common terminal 153 is connected to the second reed 135 through a signal transmission line 154, and the other end is connected to the signal processing module to form a complete signal loop. The signal processing module receives the closing signal of the closing member 13, analyzes and processes it, and displays it on the display screen.

[0036] As an alternative embodiment, such as Figure 1 As shown, the outer wall of the housing 15 has an observation window 155, and both sides of the housing 15 have observation windows 155. The two observation windows 155 are parallel to each other and can be used to visually observe the internal operating status of the device. The outer wall of the housing 15 has two oil flow channel interfaces 156 for connecting the transformer oil pipeline. The oil flow channel interface 156 away from the convex plate 115 is the inlet, and the oil flow channel interface 156 closer to the convex plate 115 is the outlet.

[0037] When a fault occurs inside the transformer, the generated gas and surging oil flow will impact the baffle 113. The baffle 113 rotates around the shaft 112 under the action of the oil flow. The rotation angle is related to the magnitude of the oil flow impact force. The rotation of the baffle 113 drives the permanent magnet to approach the corresponding reed switch. Since the lengths of the first bracket 141 and the second bracket 142 are different, different levels of alarm signals are triggered by the cooperation of different permanent magnets and reed switches.

[0038] like Figure 4As shown, when the transformer is in the early stage of a fault, the oil flow rate is low and the baffle 113 rotates at a small angle, which is θ1. The third permanent magnet 145 approaches the three-stage reed switch 133, causing the first reed 134 and the second reed 135 inside it to close. The signal is transmitted to the signal processing module for analysis and processing through the signal transmission line 154. At this time, the display shows "Level 3 alarm" and flashes a red light at a frequency of 1Hz, indicating that the transformer is in a minor fault state.

[0039] like Figure 5 As shown, when the transformer fault develops further, the oil flow velocity increases, and the baffle 113 rotates to a larger angle, which is θ2. The second permanent magnet 144 approaches the secondary reed switch 132, triggering the first reed 134 and the second reed 135 inside to close, issuing a secondary alarm signal. At this time, the display screen shows "Secondary Alarm" and flashes a red light at a frequency of 5Hz, indicating that the transformer has entered the intermediate fault stage.

[0040] like Figure 6 As shown, when a serious fault occurs in the transformer, the oil flow surges rapidly, and the baffle 113 rotates to the heavy gas action setting value. At this time, the angle is θ3. The first permanent magnet 143 contacts the first-stage reed switch 131, triggering the closure of the first reed 134 and the second reed 135 inside, triggering the first-stage alarm signal. At this time, the display shows "Level 1 Alarm" and flashes a red light at a frequency of 10Hz. The first-stage alarm signal can be transmitted to external switching elements (such as circuit breakers or relay protection devices) through the signal processing module. After receiving the signal, the switching element immediately acts to cut off the power supply circuit of the transformer, thereby stopping the power supply to the transformer. Alternatively, the power can be cut off manually by observing the flashing frequency of the red light and the content displayed on the screen, or by manually operating the circuit breaker or other control equipment.

[0041] The angles through which the baffles rotate satisfy the following relationship:

[0042] θ1<θ2<θ3

[0043] Where θ1 is the angle through which the baffle rotates when the relay issues a level 3 alarm; θ2 is the angle through which the baffle rotates when the relay issues a level 2 alarm; and θ3 is the baffle rotation angle setting value for the heavy gas action of the relay.

[0044] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A multi-stage alarm device, characterized by: include, The main component (1) includes a rotating part (11), a fixing part (12) disposed on the outer wall of the rotating part (11), an opening and closing part (13) disposed inside the fixing part (12), an adsorption part (14) disposed on the outer wall of the rotating part (11), and a shell (15) disposed outside the rotating part (11). The rotating component (11) includes a support frame (111), and the fixing component (12) is disposed on the outer wall of the support frame (111).

2. The multi-stage alarm device of claim 1, wherein: The outer wall of the support frame (111) is provided with a rotating shaft (112), and the outer wall of the rotating shaft (112) is provided with a baffle (113).

3. The multi-stage alarm device of claim 2, wherein: The fastener (12) includes a stabilizing plate (121) disposed on the outer wall of the support frame (111), and the outer wall of the stabilizing plate (121) is provided with a plurality of sleeves (122).

4. The multi-stage alarm device of claim 3, wherein: The opening and closing element (13) includes a primary reed switch (131), a secondary reed switch (132) and a tertiary reed switch (133) disposed in the plurality of sleeves (122).

5. The multi-stage alarm device of claim 4, wherein: The first-stage reed switch (131), the second-stage reed switch (132), and the third-stage reed switch (133) are all equipped with a first reed (134) and a second reed (135) inside.

6. The multi-stage alarm device of claim 5, wherein: The adsorption element (14) includes a first support (141) and a second support (142) disposed on the outer wall of the baffle (113).

7. The multi-stage alarm device of claim 6, wherein: The outer wall of the baffle (113) is provided with a first permanent magnet (143), the outer wall of the first bracket (141) is provided with a second permanent magnet (144), and the outer wall of the second bracket (142) is provided with a third permanent magnet (145).

8. The multi-stage alarm device of claim 7, wherein: The outer wall of the support frame (111) is provided with a bottom plate (114), and the outer wall of the bottom plate (114) is provided with a protruding plate (115), which is movably engaged with the baffle (113).

9. The multi-stage alarm device of claim 8, wherein: The outer wall of the housing (15) is provided with a terminal box (151), and the inner wall of the terminal box (151) is provided with a specific terminal (152) and a common terminal (153). The specific terminal (152) is connected to the first reed (134) through a signal transmission line (154). One end of the common terminal (153) is connected to the second reed (135) through a signal transmission line (154), and the other end is connected to the signal processing module.

10. The multi-stage alarm device of claim 9, wherein: The outer wall of the housing (15) is provided with an observation window (155) and an oil flow channel interface (156).

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