Transformer gas relay protection structure

Abstract

The utility model relates to power equipment protection technical field discloses a transformer gas relay protection structure, include: protection cover shell, protection cover shell is equipped in the outside of gas relay, is used for preventing gas relay, exhaust cylinder, exhaust cylinder is fixedly connected in the top of protection cover shell, air inlet cylinder, air inlet cylinder is fixedly connected in the bottom of protection cover shell. The transformer gas relay protection structure, through the cooperation between each part, part airflow impact conical guide column, the baffle of conical guide column and its outer wall distribution can be to airflow guide shunt, guide airflow to flow into the inside of protection cover shell through air inlet cylinder, then discharges outward through exhaust cylinder, the airflow that continues to circulate can take away the heat that accumulated in the inside of protection cover shell, avoid transformer gas relay long -term in high temperature environment, complete protection while, prevent high temperature shortens the service life of transformer gas relay.

Description

Technical Field

[0001] This utility model relates to the field of power equipment protection technology, specifically a transformer gas relay protection structure. Background Technology

[0002] The gas relay is a core component for internal fault protection in oil-immersed transformers. Installed on the connecting pipe between the transformer tank and conservator, it detects gas accumulation and oil flow fluctuations caused by internal transformer faults, triggering a light gas alarm and a heavy gas trip, respectively. It serves as the first line of defense for internal transformer fault protection. Because gas relays are exposed to outdoor environments for extended periods, they face various environmental challenges such as rain erosion, dust accumulation, drastic temperature changes, and ultraviolet aging. Their operational reliability directly affects the safe and stable operation of the transformer.

[0003] To prevent gas relays from being affected by the natural environment in outdoor or open-air environments, the utility model patent with authorization announcement number CN223871400U discloses a protective structure for a transformer gas relay, which relates to the field of power equipment protection technology. It includes: an insulating protective sleeve, a first cover plate and a second cover plate. The insulating protective sleeve is located between the first cover plate and the second cover plate. It can effectively prevent rainwater and small animals from entering the gas relay, thereby effectively improving the safety performance of the equipment.

[0004] However, this enclosed structure presents a heat dissipation problem: poor air circulation inside the enclosure makes it difficult for heat to dissipate outwards in high-temperature environments during summer or when the transformer is operating at full load, resulting in a localized heat accumulation effect. The core components inside the gas relay, such as the float mechanism, baffle spring, and reed contacts, are exposed to high temperatures for extended periods, which accelerates the aging and hardening of rubber seals, the elastic fatigue of metal springs, and the performance degradation of insulation materials. This leads to drift in the action setting value, reducing the accuracy and reliability of the protection action, and also shortens the overall service life of the gas relay to some extent. Utility Model Content

[0005] The purpose of this utility model is to provide a transformer gas relay protection structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective structure for a transformer gas relay, comprising: a protective cover, which is fitted onto the outside of the gas relay for protection; an exhaust pipe, which is fixed to the top of the protective cover; an air inlet, which is fixed to the bottom of the protective cover; a conical guide column, which is installed below the air inlet, with a gap between the conical guide column and the air inlet for airflow entry; multiple airflow baffles, which are uniformly fixed to the outer wall of the conical guide column for intercepting the lateral movement of the airflow; and a rain shield, which is fitted onto the upper outer wall of the exhaust pipe, with a gap between the rain shield and the exhaust pipe for airflow exit.

[0007] Optionally, it further includes: the number of exhaust pipes is two, the number of rain shields is the same as the number of exhaust pipes, the number of air inlets is multiple, and the number of conical guide columns is the same as the number of air inlets.

[0008] Optionally, it further includes: a first screw, which is fixedly connected to the inner top of the rain cover cylinder; a top plate, which is threadedly connected to the lower outer wall of the first screw; the top plate is fixedly connected to the top of the exhaust pipe; and the upper surface of the top plate is provided with a plurality of air outlet holes.

[0009] Optionally, it further includes: a second screw fixed to the top of the tapered guide column; a threaded ring threadedly connected to the outer wall of the second screw; and a support rod fixed to the outer wall of the threaded ring, the other end of which is fixedly connected to the inner wall of the air inlet cylinder.

[0010] Optionally, at least two support rods are provided.

[0011] Optionally, it further includes: a waterproof and breathable membrane covering the top of the air inlet cylinder, and an adhesive layer, wherein the waterproof and breathable membrane is fixedly connected to the air inlet cylinder through the adhesive layer.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This transformer gas relay protection structure has the following advantages: Through the coordinated operation of various components, the protective cover is fitted over the transformer gas relay to provide protection. The protective cover can prevent rainwater, small animals, and nesting debris from directly contacting the transformer gas relay. When the equipment is running, the upper and lower ends of the protective cover are equipped with exhaust pipes and air inlets, respectively, which allows the internal space of the protective cover to communicate with the outside. The matching rain shield can prevent rainwater from seeping into the protective cover. When the outside air flows, some airflow impacts the conical guide column. The conical guide column and the baffles distributed on its outer wall can guide and divert the airflow, guiding the airflow into the protective cover through the air inlet and then out through the exhaust pipe. The continuous airflow can carry away the heat accumulated inside the protective cover, preventing the transformer gas relay from being in a high-temperature environment for a long time. While completing the protection, it also prevents high temperature from shortening the service life of the transformer gas relay.

[0013] The top plate of the exhaust pipe has an air outlet, and a mesh filter structure is fixedly installed inside the air outlet to prevent insects from crawling into the protective cover. At the same time, the waterproof and breathable membrane installed at the top of the air inlet can not only block insects, but also prevent the fine water vapor carried by the airflow from seeping into the protective cover, further improving the overall protection effect of the protective cover for the transformer gas relay. Attached Figure Description

[0014] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Enlarged view of point B in the middle; Figure 4 for Figure 3 A top view of the overall structure of the central top slab.

[0016] In the diagram: 1. Protective cover, 2. Exhaust pipe, 3. Air inlet pipe, 4. Conical guide column, 5. Airflow baffle, 6. Rain cover, 7. First screw, 8. Top plate, 9. Air outlet, 10. Second screw, 11. Threaded ring, 12. Support rod, 13. Waterproof and breathable membrane, 14. Adhesive layer. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1 to 4 The technical solution provided by this utility model is as follows: a protective structure for a transformer gas relay, comprising: a protective cover 1, which is fitted on the outside of the gas relay for protecting the gas relay; an exhaust pipe 2, which is fixed to the top of the protective cover 1; an air inlet pipe 3, which is fixed to the bottom of the protective cover 1; a conical guide column 4, which is installed below the air inlet pipe 3, with a gap between the conical guide column 4 and the air inlet pipe 3 for allowing airflow to enter; multiple airflow baffles 5, which are evenly fixed to the outer wall of the conical guide column 4 for intercepting the lateral movement of airflow; and a rain shield 6, which is fitted on the upper part of the outer wall of the exhaust pipe 2, with a gap between the rain shield 6 and the exhaust pipe 2 for allowing airflow to exit.

[0019] In the specific implementation process, it is worth noting that the protective cover 1 is made of 304 stainless steel sheet, which is formed by stamping and bending. The sheet thickness is 1.5mm to 2mm, and the surface is passivated for corrosion protection. It can withstand outdoor ultraviolet aging, rain corrosion, and temperature fluctuations. The cover is a split-type mating structure. A transparent acrylic observation window is reserved on the side, which is directly opposite the observation window of the gas relay. A semi-circular clearance opening is opened at the bottom to accommodate the upper and lower connecting pipes of the gas relay. After assembly, it can be locked and fixed by the side bolt group without modifying the original installation structure of the relay. The specific structure of the protective cover 1 can be understood by those skilled in the art by referring to the prior art description in the background art, and will not be described in detail here. This application does not involve With improvements to its installation principle, both the exhaust pipe 2 and the air inlet pipe 3 are made of stainless steel tubing of the same material as the protective cover 1, and are welded and fixed to the top and bottom walls of the protective cover 1 respectively. The conical guide column 4 is a solid conical structure with the cone tip facing upwards and directly opposite the central axis of the air inlet pipe 3, which can guide and gather the horizontal flow upwards. Multiple airflow baffles 5 are evenly arranged radially around the conical guide column 4, and the baffle surface extends along the generatrix of the cone surface, which can intercept and guide the lateral airflow. The rain cover 6 is a cylindrical structure with an open bottom, and the inner diameter is larger than the outer diameter of the exhaust pipe. There is an exhaust gap between the top wall of the cover and the top of the exhaust pipe 2, and the lower edge is lower than the top end face of the exhaust pipe 2, which can prevent vertical rainwater from falling directly into the cylinder.

[0020] Furthermore, it also includes: two exhaust pipes 2, the same number of rain shield pipes 6 as the exhaust pipes 2, multiple air intake pipes 3, and the same number of conical guide columns 4 as the air intake pipes 3.

[0021] In the specific implementation process, it is worth noting that the two exhaust pipes 2 are symmetrically distributed on the left and right sides of the top of the protective cover 1, corresponding to the high-temperature gas accumulation area in the upper part of the chamber, which can form a dual parallel exhaust channel to improve heat exchange uniformity; multiple air inlets 3 are evenly arranged around the bottom of the protective cover 1, with a number of 3 to 6 to facilitate stable air intake. Each set of air inlets 3 is equipped with a set of conical guide columns 4 and airflow baffles 5 below it, forming an independent air intake structure to ensure the stability and redundancy of the overall convective heat dissipation. This configuration can be adaptively adjusted according to the specifications and dimensions of the gas relay and the wind speed conditions of the site environment to meet the matching needs of transformers of different capacities.

[0022] Furthermore, it also includes: a first screw 7, which is fixedly connected to the inner top of the rain cover cylinder 6; a top plate 8, which is threadedly connected to the lower outer wall of the first screw 7; the top plate 8 is fixedly connected to the top of the exhaust pipe 2; and multiple air outlets 9 are provided on the upper surface of the top plate 8.

[0023] In the specific implementation process, it is worth noting that the first screw 7 is made of stainless steel and its top end is welded and fixed to the center of the inner top surface of the rain cover cylinder 6. The top plate 8 is a circular stainless steel plate with a threaded through hole in the center that is threaded to the first screw 7. The outer diameter of the top plate 8 is the same as the outer diameter of the exhaust pipe 2. The bottom plate is fixed to the top end face of the exhaust pipe 2 by circumferential welding. Multiple air outlets 9 are evenly arranged along the circumferential direction of the top plate 8. The inner wall of the air outlets 9 can be fitted with a built-in filter to improve the insect and dust prevention effect.

[0024] Furthermore, it also includes: a second screw 10, which is fixed to the top of the conical guide column 4; a threaded ring 11, which is threaded to the outer wall of the second screw 10; and a support rod 12, which is fixed to the outer wall of the threaded ring 11, with the other end of the support rod 12 fixedly connected to the inner wall of the air intake cylinder 3.

[0025] In the specific implementation process, it is worth noting that the second screw 10 is coaxially fixed to the top of the cone tip of the cone-shaped guide column 4, and the threaded ring 11 is an annular stainless steel component with internal threads on its inner wall that are threaded to the second screw 10.

[0026] Furthermore, at least two support rods 12 should be installed.

[0027] In the specific implementation process, it is worth noting that the support rod 12 is made of stainless steel rod with a circular cross section and is symmetrically arranged along the outer circumference of the threaded ring 11. At least two rods are set to form a stable support. The outer end of the support rod is welded and fixed to the inner wall of the air inlet cylinder 3, and the threaded ring 11 is suspended and positioned at the center of the air inlet cylinder 3.

[0028] Furthermore, it also includes: a waterproof and breathable membrane 13, which covers the top of the air inlet cylinder 3, and an adhesive layer 14, which fixes the waterproof and breathable membrane 13 to the air inlet cylinder 3 through the adhesive layer 14.

[0029] In the specific implementation process, it is worth noting that the waterproof and breathable membrane 13 includes, but is not limited to, expanded polytetrafluoroethylene microporous membrane material, and can be other waterproof and breathable materials. It allows gas molecules to pass freely while effectively intercepting liquid water droplets, fine dust and tiny insects from entering the chamber, thus balancing breathability and anti-seepage and dustproof capabilities. The adhesive layer 14 uses weather-resistant acrylic pressure-sensitive adhesive, which is laid around the top end face of the air inlet cylinder 3 to maintain long-term bonding strength. The waterproof and breathable membrane 13 completely covers the top flow section of the air inlet cylinder 3, ensuring that all airflow entering the protective cover 1 is filtered. The membrane is a replaceable design, and the old membrane can be directly peeled off and a new membrane can be pasted during operation and maintenance. The maintenance operation is simple and can maintain the protective performance of the device for a long time.

[0030] Working principle: Enclosure protection principle: The protective cover 1 is installed outside the transformer gas relay, forming a closed physical isolation barrier. It can effectively prevent rainwater, small animals, nesting debris and other external media from directly contacting the relay body. The external rain cover 6 is the core component of the rainproof and shielding structure. It can allow airflow out while intercepting rainwater. It can guide and shield vertically falling and laterally splashing rainwater, preventing rainwater from seeping into the internal cavity along the gaps of the cover, thus creating a stable and sealed protective space for the gas relay.

[0031] Convection cooling principle: The upper and lower ends of the protective cover 1 are respectively equipped with an exhaust pipe 2 and an air inlet pipe 3, forming a through-type ventilation channel to achieve air communication between the internal chamber and the outside atmosphere. When the external flow impacts the conical guide column 4, it forms a directional airflow through the guiding and diversion effect of the curved surface of the column and the circumferential airflow baffle 5. The airflow is introduced into the internal chamber of the protective cover 1 through the air inlet pipe 3. After heat exchange, it is discharged through the top exhaust pipe 2, forming a stable natural convection heat exchange cycle, continuously carrying out the internal heat accumulation, effectively suppressing the temperature rise of the environment inside the cover, avoiding the gas relay from being in a high-temperature condition for a long time, and ensuring its operational reliability and service life.

[0032] Breathable and leak-proof principle: The exhaust port 9 of the top plate 8 of the exhaust pipe 2 is fitted with a 40-mesh to 80-mesh filter component, which forms an insect-proof and dust-proof barrier layer to prevent external insects from entering the inside of the cover. The waterproof and breathable membrane 13 installed at the top of the air inlet pipe 3 can trap and separate fine water vapor and micro-sized foreign objects carried in the airflow while ensuring the normal flow of the gas phase medium. It has multiple functions of insect prevention, moisture prevention and dust prevention, further improving the cleanliness of the environment inside the cover, forming a protective redundancy and strengthening the overall protective performance of the device.

[0033] 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 transformer gas relay protection structure, characterized in that, include: A protective cover (1) is fitted onto the outside of the gas relay to protect the gas relay. An exhaust pipe (2) is fixed to the top of the protective cover (1); An air inlet cylinder (3) is fixed to the bottom end of the protective cover (1); A conical guide column (4) is installed below the air inlet cylinder (3), and there is a gap between the conical guide column (4) and the air inlet cylinder (3) for the airflow to enter. Airflow baffle (5), multiple airflow baffles (5) are provided, and multiple airflow baffles (5) are uniformly fixed on the outer wall of the conical guide column (4) to intercept the lateral movement of the airflow; Rain cover (6) is fitted on the outer wall of the exhaust pipe (2), and there is a gap between the rain cover (6) and the exhaust pipe (2) for airflow to flow out.

2. The transformer gas relay protection structure according to claim 1, characterized in that, Also includes: There are two exhaust pipes (2), the number of rain shields (6) is the same as the number of exhaust pipes (2), the number of air inlets (3) is multiple, and the number of conical guide columns (4) is the same as the number of air inlets (3).

3. The transformer gas relay protection structure according to claim 1, characterized in that, Also includes: The first screw (7) is fixed to the top of the inside of the rain cover cylinder (6); Top plate (8) is threaded to the lower outer wall of the first screw (7). The top plate (8) is fixedly connected to the top of the exhaust pipe (2). Multiple air outlet holes (9) are provided on the upper surface of the top plate (8).

4. The transformer gas relay protection structure according to claim 1, characterized in that, Also includes: The second screw (10) is fixed to the top of the conical guide column (4); A threaded ring (11) is threaded onto the outer wall of the second screw (10); Support rod (12), the support rod (12) is fixed to the outer wall of the threaded ring (11), and the other end of the support rod (12) is fixedly connected to the inner wall of the air inlet cylinder (3).

5. The transformer gas relay protection structure according to claim 4, characterized in that, At least two support rods (12) shall be provided.

6. The transformer gas relay protection structure according to claim 1, characterized in that, Also includes: A waterproof and breathable membrane (13) covers the top of the air inlet cylinder (3); The adhesive layer (14) is used to fix the waterproof and breathable membrane (13) to the air inlet cylinder (3).

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