Fireproof early warning mechanism of main transformer

Abstract

The utility model provides a fireproof early warning mechanism of a main transformer, and belongs to the technical field of transformer equipment. The fireproof early warning mechanism comprises a mounting seat and a temperature sensor, a fixed cylinder is fixedly connected to the interior of the mounting seat, and a sliding cavity is formed in the fixed cylinder; the fireproof early warning mechanism further comprises a plug-in assembly, the plug-in assembly is used for fixing a temperature sensor, and the plug-in assembly can be in plug-in connection with the fixing cylinder. According to the utility model, through the arrangement of the plug-in assembly, the plug-in assembly can be mounted and dismounted in the mounting seat, and the temperature sensor is placed and fixed in the placing cylinder in the plug-in assembly, so that the temperature sensor can be quickly dismounted and mounted, the complexity of replacement work is reduced, the replacement efficiency is accelerated, and due to the plug-in arrangement of the plug-in assembly, the replacement efficiency is improved. And when the temperature sensor is replaced, the whole fireproof early warning mechanism does not need to be replaced, only the temperature sensor needs to be replaced, the replacement cost is reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer equipment, in particular to a fire prevention early warning mechanism of a main transformer. Background Art

[0002] The main transformer is the core equipment in the power system. It is mainly used for the voltage reduction process of power transmission and transformation. It is widely used in the fields of power industry, chemical industry, metallurgy, mining, etc., as well as the power supply systems of some large machines and equipment. In hydropower stations, it plays a vital role and is used to realize voltage conversion between high-voltage transmission lines and low-voltage distribution lines. When the main transformer is working, the voltage conversion inside it will generate a lot of heat. Therefore, in order to prevent the main transformer from continuing to work and accumulating too much heat, and then burning or even exploding, a fire warning mechanism is usually set on the outside of the main transformer to continuously monitor the temperature of the main transformer. When the temperature is too high, the signal will be transmitted to the monitoring room to facilitate power off or maintenance operations to avoid accidents with the main transformer.

[0003] The prior art usually fixes the temperature sensor inside the fire warning mechanism, and then screws the fire warning mechanism to the outside of the main transformer to continuously monitor the main transformer. However, in actual work, since the temperature sensor needs to work continuously, it may fail and need to be replaced. When replacing the temperature sensor, the entire fire warning mechanism needs to be disassembled and replaced, which makes the replacement procedure more cumbersome and the replacement cost higher, reducing the practicality of the device.

[0004] Therefore, the utility model provides a fire prevention warning mechanism for a main transformer to meet the demand. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a fire warning mechanism for a main transformer, so as to solve the problem that in the prior art, the temperature sensor needs to work continuously and uninterruptedly during actual operation, which leads to the need to replace it due to failure. When replacing the temperature sensor, the entire fire warning mechanism needs to be dismantled and replaced, which makes the replacement procedure more cumbersome and the replacement cost higher, reducing the practicality of the device.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A fire warning mechanism for a main transformer comprises a mounting seat and a temperature sensor, wherein a fixing cylinder is fixedly connected to the interior of the mounting seat, and a sliding cavity is provided inside the fixing cylinder; the fire warning mechanism also comprises a plug-in component, which is used to fix the temperature sensor and can be plugged into the fixing cylinder.

[0008] Optionally, the plug-in assembly includes an outer plate in close contact with the mounting seat, one side of the outer plate is fixedly connected to a support block, the other side of the support block is fixedly connected to an outer frame, both ends of the other side of the outer frame are provided with card holes, and a plurality of card slots are provided around the outside of the outer frame, a placement tube is fixedly connected to the inside of the outer frame, the temperature sensor is placed inside the placement tube, and the fixed tube can be inserted between the placement tube and the outer frame.

[0009] Optionally, a heat-conducting component is provided on the inner side of the mounting seat, and the heat-conducting component includes a main fin and a third segment fixedly connected to the mounting seat, the top end of one side of the main fin is fixedly connected to the first segment, the middle end of the other side of the main fin is fixedly connected to the second segment, and the bottom of the main fin is fixedly connected to a card block whose size and shape are adapted to the card slot.

[0010] Optionally, a plurality of inner grooves are formed around the inner cavity of the mounting seat.

[0011] Optionally, the main fin and the third fin of the same heat-conducting component are respectively fixedly connected to two ends of the bottom of the corresponding inner groove.

[0012] Optionally, the fixing tube includes fixing blocks on both sides of which are adapted to the clamping holes in position and size.

[0013] Optionally, the size of the outer side of the fixing tube matches the size of the inner side of the outer frame.

[0014] Optionally, a side of the fixing tube close to the outer plate is in a truncated cone shape, and the inner and outer sides of the outer frame close to one end of the fixing tube are both curved surfaces.

[0015] Optionally, the size of the outer side of the outer frame is smaller than the inner side of the mounting seat, and a heat conduction cavity is formed between the outer frame and the mounting seat.

[0016] Optionally, a mounting plate is fixedly connected to a side of the mounting seat away from the outer plate, and a plurality of mounting holes are formed around the mounting plate.

[0017] Compared with the prior art, the utility model has at least the following beneficial effects:

[0018] In the above scheme, by setting up a plug-in component, the plug-in component can be installed and disassembled inside the mounting seat, and by placing a fixed temperature sensor in the placement tube inside the plug-in component, the temperature sensor can be quickly disassembled and assembled, which reduces the tediousness of replacement work and speeds up replacement efficiency. Due to the plug-in setting of the plug-in component, when replacing the temperature sensor, there is no need to replace the entire fire warning mechanism, only the temperature sensor needs to be replaced, which reduces the replacement cost and increases the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the present invention and enable those skilled in the relevant art to make and use the present invention.

[0020] Figure 1 A schematic diagram of a cutaway three-dimensional structure of a fire warning mechanism for a main transformer;

[0021] Figure 2 is a schematic diagram of the three-dimensional structure of the mounting base;

[0022] Figure 3 It is a schematic diagram of the cutaway three-dimensional structure of the mounting base;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the plug-in component;

[0024] Figure 5 for Figure 3 An enlarged schematic diagram of point A.

[0025] [Reference Signs]

[0026] 1. Mounting seat; 2. Plug-in assembly; 201. Outer plate; 202. Support block; 203. Outer frame; 204. Card slot; 205. Card hole; 206. Placement tube; 3. Fixed tube; 4. Sliding cavity; 5. Inner groove; 6. Heat conduction assembly; 601. Main fin; 602. First slice; 603. Second slice; 604. Card block; 605. Third slice; 7. Temperature sensor.

[0027] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0028] The following is a detailed description of a fire warning mechanism for a main transformer provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0029] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0030] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0031] It is to be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0032] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0033] like Figures 1 to 5 As shown, an embodiment of the utility model provides a fire warning mechanism for a main transformer, including a mounting base 1, a temperature sensor 7 and a plug-in component 2 for fixing the temperature sensor 7, a fixing cylinder 3 is fixedly connected to the inside of the mounting base 1, a sliding cavity 4 is provided inside the fixing cylinder 3, the plug-in component 2 can be plugged with the fixing cylinder 3, and a heat-conducting component 6 is provided on the inner side of the mounting base 1.

[0034] The plug-in assembly 2 includes an outer plate 201 in close contact with the mounting seat 1, a support block 202 is fixedly connected to one side of the outer plate 201, an outer frame 203 is fixedly connected to the other side of the support block 202, a clamping hole 205 is provided at both ends of the other side of the outer frame 203, a plurality of clamping grooves 204 are provided around the outer side of the outer frame 203, a placement cylinder 206 is fixedly connected to the inside of the outer frame 203, a temperature sensor 7 is placed inside the placement cylinder 206, and a fixed cylinder 3 can be inserted between the placement cylinder 206 and the outer frame 203. The fixed cylinder 3 includes fixed blocks whose positions and sizes on both sides are adapted to the clamping holes 205, the size of the outer side of the fixed cylinder 3 is adapted to the size of the inner side of the outer frame 203, the size of the outer side of the outer frame 203 is smaller than the inner side of the mounting seat 1, and a heat conduction cavity is formed between the outer frame 203 and the mounting seat 1.

[0035] The heat conducting component 6 includes a main fin 601 and a third slice 605 fixedly connected to the mounting seat 1, the top of one side of the main fin 601 is fixedly connected to the first slice 602, the middle of the other side of the main fin 601 is fixedly connected to the second slice 603, and the bottom of the main fin 601 is fixedly connected to a clamping block 604, the size and shape of the clamping block 604 are adapted to the clamping slot 204. The plug-in component 2 is locked by the cooperation of the clamping block 604 and the clamping slot 204, so as to prevent the main transformer from vibrating slightly during operation and affecting the stable connection between the plug-in component 2 and the mounting seat 1, and strengthen the stability of the plug-in component 2 inside the mounting seat 1, so that the temperature sensor 7 can work stably.

[0036] like Figures 1 to 3 As shown, a plurality of inner grooves 5 are provided around the inner cavity of the mounting base 1 , and the main fin 601 and the third segment 605 of the same heat conducting component 6 are fixedly connected to the two ends of the bottom of the corresponding inner groove 5 .

[0037] like Figure 3 and Figure 4 As shown, the side of the fixed cylinder 3 close to the outer plate 201 is in the shape of a truncated cone, and the inner and outer sides of the outer frame 203 close to one end of the fixed cylinder 3 are both arc surfaces.

[0038] like Figure 1 As shown, a mounting plate is fixedly connected to one side of the mounting base 1 away from the outer plate 201 , and a plurality of mounting holes are provided around the mounting plate. The mounting base 1 can be bolted to the inside of the main transformer through the mounting plate.

[0039] Place the temperature sensor 7 into the placement tube 206 with an inner cavity size corresponding to it, hold the outer plate 201 through the gripping groove opened on the outside, insert the plug-in component 2 into the mounting seat 1, and slide it into the outer frame 203 through the outside of one end of the truncated cone of the fixed tube 3. The conical design of the fixed tube 3 makes it easier for the outer frame 203 to cover the outside of the fixed tube 3, thereby increasing the accuracy of installation.

[0040] During the plugging process, the arc surface design of the third split piece 605 can resist the outer frame 203 to prevent the plugging position from being too high or too low. While increasing the plugging accuracy, it also prevents the outer frame 203 from squeezing the main fin 601 downward and deforming it, thereby affecting the installation of the mounting seat 1. The outer frame 203 and the placement tube 206 slide into the outer side and inner side of the fixing tube 3 respectively. The outer side of the outer frame 203 contacts the block 604 and squeezes the block 604 upward, so that the elastic main fin 601 is 1 is deformed upward, and then the slot 204 outside the outer frame 203 slides to the bottom of the block 604, the main fin 601 rebounds, driving the block 604 to move downward and enter the slot 204 to perform the first step of locking, and then continue to push the outer frame 203, repeatedly squeezing the block 604 to deform the main fin 601, until the block 604 moves to the next slot 204, completing the second step of locking, and at the same time, another group of blocks 604 and the slot 204 are locked synchronously.

[0041] The outer frame 203 is locked on the outside of the fixed tube 3 to complete the locking of the plug-in component 2, so that the temperature sensor 7 placed in the tube 206 is close to the main transformer to continuously monitor its temperature, thereby increasing the stability of the plug-in component 2 inside the mounting seat 1 and allowing the plug-in component 2 to be quickly plugged in, so that the temperature sensor 7 can be quickly disassembled and assembled, reducing the tediousness of the replacement work and speeding up the replacement efficiency. The stability of the temperature sensor 7 is increased by locking between multiple groups of card blocks 604 and card slots 204, so that the temperature sensor 7 is not affected by the main transformer during operation, thereby increasing the practicality of the device.

[0042] When the plug-in component 2 is fixed, the card hole 205 on its outer side is sleeved on the outer side of the corresponding fixing block, further increasing the stability of the plug-in component 2 after installation. The main transformer is set to work in the hydropower station. There are many waters around the hydropower station, which makes the air humidity in the surrounding environment of the hydropower station high. When the main transformer is working, a large amount of heat will be generated. The mounting base 1 is close to the outside of the main transformer, absorbs and conducts the heat to the inside, and then dissipates the heat to the inside of the heat conduction cavity through the inner wall, and increases the contact area between the inner wall of the mounting base 1 and the heat conduction cavity through multiple groups of main fins 601, the first segment 602, the second segment 603 and the third segment 605, thereby improving the heat conduction effect, and isolating the humid air outside the mounting base 1 through the heat conduction cavity to prevent humid air from entering the device and affecting the temperature sensor 7, thereby reducing the possibility of failure of the temperature sensor 7 due to moisture, improving the service life of the temperature sensor 7, and increasing the practicality of the device.

[0043] The working principle of the utility model is as follows: the mounting seat 1 is bolted to the inside of the main transformer through the mounting plate, the temperature sensor 7 is placed in the placement tube 206, the outer frame 203 is inserted into the mounting seat 1 through the outer plate 201, the outer frame 203 is supported by the third segment 605 to prevent its insertion position from being too high or too low, the outer frame 203 and the placement tube 206 slide into the outer and inner sides of the fixing tube 3 respectively, the outer side of the outer frame 203 contacts the block 604, and the block 604 is squeezed upward, so that the main fin 601 is deformed upward, and then the slot 204 on the outer side of the outer frame 203 slides to the bottom of the block 604, the main fin 601 rebounds, drives the block 604 to move downward, enters the slot 204, and is locked first, and then continues to push the outer frame 203, repeats the squeezing of the block 604, and the operation of deforming the main fin 601, until the block 604 moves to the next slot 20 4. Complete the second step of locking. At the same time, another group of card blocks 604 and the card slot 204 complete the locking synchronously, lock the outer frame 203 on the outside of the fixed tube 3, complete the locking of the plug-in component 2, so that the temperature sensor 7 placed in the tube 206 is close to the main transformer, and its temperature is continuously monitored. When the main transformer is working, a large amount of heat will be generated. The mounting base 1 is close to the outside of the main transformer, and the heat is absorbed and conducted to the inside, and then the heat is dissipated to the inside of the heat conduction cavity through the inner wall. The contact area between the inner wall of the mounting base 1 and the heat conduction cavity is increased through multiple groups of main fins 601, the first segment 602, the second segment 603 and the third segment 605, thereby improving the heat conduction effect. The humid air outside the mounting base 1 is isolated through the heat conduction cavity to prevent humid air from entering the device and affecting the temperature sensor 7, thereby achieving the effect of moisture-proof and moisture-proof, reducing the speed of aging failure of the temperature sensor 7, and extending the service life of the device.

[0044] The above temperature sensor 7 in the present utility model is disclosed in the prior art and will not be described in detail here.

[0045] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the preferred embodiment of the present invention, and the present invention can be fully understood by those skilled in the art without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0046] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fire warning mechanism for a main transformer, comprising a mounting base and a temperature sensor, characterized in that: A fixing cylinder is fixedly connected inside the mounting seat, and a sliding cavity is provided inside the fixing cylinder; The fire prevention warning mechanism further includes a plug-in component, which is used to fix the temperature sensor and can be plugged into the fixing tube; The plug-in assembly includes an outer plate in close contact with the mounting seat, a support block is fixedly connected to one side of the outer plate, an outer frame is fixedly connected to the other side of the support block, both ends of the other side of the outer frame are provided with card holes, a plurality of card slots are provided around the outer side of the outer frame, a placement tube is fixedly connected to the inside of the outer frame, the temperature sensor is placed inside the placement tube, and the fixed tube can be inserted between the placement tube and the outer frame; A heat-conducting component is arranged on the inner side of the mounting seat, and the heat-conducting component includes a main fin and a third segment fixedly connected to the mounting seat, the top end of one side of the main fin is fixedly connected to the first segment, the middle end of the other side of the main fin is fixedly connected to the second segment, and the bottom of the main fin is fixedly connected to a card block whose size and shape are adapted to the card slot.

2. The fire prevention warning mechanism of the main transformer according to claim 1 is characterized in that: A plurality of inner grooves are arranged around the inner cavity of the mounting seat.

3. The fire prevention warning mechanism of the main transformer according to claim 1, characterized in that: The main fin and the third fin of the same heat-conducting component are respectively fixedly connected to the two ends of the bottom of the corresponding inner groove.

4. The fire prevention warning mechanism of the main transformer according to claim 1, characterized in that: The fixing tube comprises fixing blocks on both sides of which the positions and sizes are matched with the clamping holes.

5. The fire prevention warning mechanism of the main transformer according to claim 1, characterized in that: The size of the outer side of the fixing tube matches the size of the inner side of the outer frame.

6. The fire prevention warning mechanism of the main transformer according to claim 1, characterized in that: The side of the fixing tube close to the outer plate is in the shape of a truncated cone, and the inner and outer sides of the outer frame close to one end of the fixing tube are both arc surfaces.

7. The fire prevention warning mechanism of the main transformer according to claim 1, characterized in that: The size of the outer side of the outer frame is smaller than the inner side of the mounting seat, and a heat conduction cavity is formed between the outer frame and the mounting seat.

8. The fire prevention warning mechanism of the main transformer according to claim 1, characterized in that: A mounting plate is fixedly connected to one side of the mounting seat away from the outer plate, and a plurality of mounting holes are arranged around the mounting plate.

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