A waterproof voltmeter for transformer

Abstract

This utility model discloses a waterproof voltmeter for transformers, aiming to solve the problem of waterproofing and moisture-proofing transformer voltmeters in outdoor environments. The voltmeter is mounted on top of the transformer mechanism and is equipped with a waterproof component. The waterproof component consists of a PVC shell, a door, and a silicone sealing gasket, forming a sealed space that effectively prevents external moisture intrusion. A built-in desiccant absorbs internal moisture, and the desiccant is easily replaceable to maintain a long-term dry environment. A glass plate is embedded in the door, allowing for easy observation of the voltmeter reading without opening the door, reducing the risk of moisture damage. Simultaneously, the transformer mechanism is equipped with heat dissipation fins to ensure normal transformer operation. This technical solution, through structural design and material selection, achieves waterproof and moisture-proof functionality for transformer voltmeters in outdoor environments, improving the reliability and service life of the equipment, and is suitable for various outdoor transformer scenarios.

Description

Technical Field

[0001] This utility model relates to the technical field of voltmeters for transformers, and specifically to a waterproof voltmeter for transformers. Background Technology

[0002] In power systems, transformers, as key equipment for voltage transformation and power transmission, are widely used in various power scenarios, including a large number of transformers installed outdoors. Outdoor environments are complex and variable, often facing harsh conditions such as rain and humid air. Traditional voltmeters installed on outdoor transformers mostly lack effective waterproofing and moisture-proofing measures. Rainwater can splash directly onto the voltmeter surface, seeping into the interior through gaps, causing short circuits in the internal electronic components, affecting normal display and even causing permanent damage. Simultaneously, humid air can condense water droplets inside the voltmeter, corroding circuit boards and metal components, reducing the voltmeter's lifespan and measurement accuracy. Moreover, existing protective methods have many shortcomings. For example, some simple protective covers only partially block rainwater, failing to completely prevent the intrusion of humid air or effectively treat existing moisture. This leads to frequent malfunctions of voltmeters on outdoor transformers during long-term use, increasing equipment maintenance costs and the risk of power outages, thus affecting the stable operation of the power system. Therefore, developing a transformer voltmeter that is effectively waterproof and moisture-proof is of significant practical importance. Utility Model Content

[0003] The purpose of this utility model is to provide a technical solution for a waterproof voltmeter for transformers, thereby addressing the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following:

[0004] The transformer mechanism includes a transformer housing, a three-phase winding fixedly connected to the inner cavity of the transformer housing, and a transformer voltmeter connected to the top left side of the transformer housing. A waterproof voltmeter component is fixedly connected to the outer surface of the transformer voltmeter.

[0005] The waterproof voltmeter component includes a PVC housing, a door hinged to the front end of the PVC housing, and a silicone sealing gasket fixed to the front port of the PVC housing with adhesive. A fixing frame is fixedly connected to the top surface of the inner cavity of the PVC housing, and a desiccant is inserted into the inside of the fixing frame. A glass plate for observing the voltmeter reading is embedded and fixed inside the door.

[0006] As a preferred embodiment of this utility model, multiple heat dissipation fins are fixedly connected to the outer surface of the transformer housing.

[0007] As a preferred embodiment of this utility model, the bottom end face of the PVC shell is fixedly connected to the upper surface of the transformer box.

[0008] As a preferred embodiment of this utility model, the interior of the cabinet door is provided with a square opening for the glass plate to be inlaid and fixed.

[0009] As a preferred embodiment of this utility model: a protrusion is fixedly connected to the right side wall of the PVC shell, and a fixing block is fixedly connected to the right side wall of the box door.

[0010] As a preferred embodiment of this utility model: both the protrusion and the fixing block are provided with through holes, a screw rod passes through the through holes, and a nut is screwed onto the rear section of the screw rod.

[0011] As a preferred embodiment of this utility model, the fixed frame is provided with a slot for the drying sheet to be inserted and fixed.

[0012] As a preferred embodiment of this utility model, the drying sheet is provided with multiple adsorption holes for adsorbing moisture inside the PVC shell.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] This technical solution provides effective waterproof and moisture-proof protection for transformer voltmeters. By installing a waterproof component on the outside of the voltmeter and using a PVC shell fixedly connected to the transformer enclosure to form a sealed space, along with a silicone sealing gasket, external moisture can be effectively prevented from entering, avoiding damage to the voltmeter due to moisture. An internal desiccant absorbs any moisture that may be generated inside the enclosure, maintaining a dry environment. The desiccant can be replaced periodically to ensure continuous moisture protection. A glass plate embedded in the enclosure door allows staff to easily observe the voltmeter readings without opening the door, reducing the risk of moisture ingress. Furthermore, the heat dissipation fins on the transformer enclosure help dissipate heat from the transformer mechanism, ensuring its normal operation. The overall technical solution improves the adaptability and reliability of the transformer voltmeter in outdoor environments and extends the equipment's service life. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the transformer as a whole.

[0017] Figure 2This is a schematic diagram of the internal structure of a transformer;

[0018] Figure 3 This is a schematic diagram of the waterproof component of a voltmeter.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Transformer mechanism; 1-1. Transformer enclosure; 1-2. Three-phase winding; 1-3. Heat sink fins; 1-4. Insulating porcelain insulator; 1-5. Transformer voltmeter; 2. Waterproof voltmeter components; 2-1. PVC housing; 2-2. Drying plate; 2-3. Fixing frame; 2-4. Nut; 2-5. Protrusion; 2-6. Silicone gasket; 2-7. Enclosure door; 2-8. Screw; 2-9. Fixing block; 2-10. Glass plate. Detailed Implementation

[0021] To provide a clearer explanation and illustration of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are described below. The following description is merely exemplary and not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically illustrate the concept and principle of the embodiments of this disclosure and do not necessarily show the specific dimensions and proportions of the various embodiments of this disclosure. The technical solution of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0022] Example 1: A waterproof voltmeter for transformers includes a transformer mechanism 1, which comprises a transformer housing 1-1. A three-phase winding 1-2 is fixedly connected within the inner cavity of the transformer housing 1-1. A transformer voltmeter 1-5 is connected to the top left side of the transformer housing 1-1. A waterproof voltmeter component 2 is fixedly connected to the outer surface of the transformer voltmeter 1-5. The bottom end face of the PVC shell 2-1 of the waterproof voltmeter component 2 is fixedly connected to the upper surface of the transformer housing 1-1. A door 2-7 is hinged to the front end face of the PVC shell 2-1, and a silicone sealing gasket 2-6 is fixed to the front port with adhesive. A fixing frame 2-3 is fixedly connected to the top surface of the inner cavity of the PVC shell 2-1. A slot is provided inside the fixing frame 2-3, and a drying plate 2-2 is held in place within the slot. The drying plate 2-2 has multiple adsorption holes for adsorbing moisture inside the PVC shell 2-1. The interior of the enclosure door 2-7 has a square opening, within which a glass plate 2-10 is fixedly installed for observing the readings of the transformer voltmeter 1-5. A protrusion 2-5 is fixedly connected to the right side wall of the PVC housing 2-1, and a fixing block 2-9 is fixedly connected to the right side wall of the enclosure door 2-7. Both protrusion 2-5 and fixing block 2-9 have through holes through which a screw 2-8 passes. A nut 2-4 is screwed onto the rear end of the screw 2-8. Multiple heat dissipation fins 1-3 are fixedly connected to the outer surface of the transformer enclosure 1-1. When the transformer is installed outdoors, the silicone gasket 2-6 prevents external moisture from entering the PVC housing 2-1, and the desiccant 2-2 absorbs any moisture that may be generated inside. The voltmeter readings can be observed through the glass plate 2-10. The desiccant 2-2 can be replaced periodically by opening the enclosure door 2-7.

[0023] Example 2: A waterproof voltmeter for transformers. The transformer housing 1-1 of the transformer mechanism 1 contains a three-phase winding 1-2. A voltmeter 1-5 is installed on the top left side, and the voltmeter 1-5 is equipped with a waterproof voltmeter component 2. The PVC housing 2-1 of the waterproof voltmeter component 2 is connected to the upper surface of the transformer housing 1-1. Its front side has a hinged door 2-7 and an adhesively fixed silicone sealing gasket 2-6. A fixed frame 2-3 is located at the top of the inner cavity of the PVC housing 2-1, and a drying plate 2-2 with multiple adsorption holes is placed in a slot within the frame. A glass plate 2-10 is inlaid in the square opening of the door 2-7. The protrusion 2-5 on the right side of the PVC housing 2-1 and the fixing block 2-9 on the right side of the door 2-7 are fixed by through holes, screws 2-8, and nuts 2-4. Multiple heat dissipation fins 1-3 are present on the outer surface of the transformer housing 1-1. During outdoor use, the silicone sealing gasket 2-6 blocks external moisture, while the desiccant 2-2 continuously absorbs internal moisture, ensuring that the voltmeter is in a dry environment. When necessary, open the cabinet door 2-7 to replace the desiccant 2-2.

[0024] Example 3: A waterproof voltmeter for transformers. In the transformer mechanism 1, a three-phase winding 1-2 is fixed inside the transformer housing 1-1. A transformer voltmeter 1-5 is connected to the top left side, and a waterproof voltmeter component 2 is installed outside the transformer voltmeter 1-5. The PVC shell 2-1 of the waterproof voltmeter component 2 is fixed to the upper surface of the transformer housing 1-1. A door 2-7 is installed on the front side via a hinge and sealed with a silicone gasket 2-6. A fixing frame 2-3 at the top of the inner cavity of the PVC shell 2-1 holds a drying plate 2-2 with adsorption holes inside. A square opening of the door 2-7 is fitted with a glass plate 2-10 for observing the voltage. The protrusion 2-5 on the right side of the PVC shell 2-1 and the fixing block 2-9 on the right side of the door 2-7 are fixed through through holes, screws 2-8, and nuts 2-4. The outer surface of the transformer housing 1-1 has heat dissipation fins 1-3. In outdoor environments, the silicone sealing gasket 2-6 prevents moisture from entering, the desiccant 2-2 absorbs internal moisture, and the voltage can be viewed through the glass plate 2-10. When the desiccant 2-2 fails, open the cabinet door 2-7 to replace it with a new desiccant 2-2.

[0025] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows: The three-phase windings 1-2 in the transformer mechanism 1 operate normally within the transformer housing 1-1, generating corresponding voltages that are displayed on the transformer voltmeter 1-5. At this time, the waterproof component 2 of the voltmeter begins to function as a waterproof and moisture-proof element. Its PVC housing 2-1 is fixedly connected to the upper surface of the transformer housing 1-1, forming a relatively enclosed space that encloses the transformer voltmeter 1-5. The silicone sealing gasket 2-6 on the front port of the PVC housing 2-1 fits tightly, effectively preventing external moisture from entering the interior of the PVC housing 2-1 through gaps. When there is moisture in the outdoor environment, the desiccant 2-2, which is clipped into the fixed frame 2-3 on the top surface of the inner cavity of the PVC housing 2-1, plays a role. The multiple adsorption holes inside the desiccant 2-2 can adsorb moisture inside the PVC housing 2-1, maintaining a dry internal environment and preventing moisture from damaging the transformer voltmeter 1-5. Operators can observe the value of the transformer voltmeter 1-5 through the glass plate 2-10 embedded inside the housing door 2-7, obtaining information without opening the housing door 2-7. When the desiccant 2-2 becomes saturated with moisture after a period of use and needs replacement, loosen the nut 2-4 at the rear of the screw 2-8, and pull the screw 2-8 out of the through hole in the protrusion 2-5 on the right side wall of the PVC housing 2-1 and the fixing block 2-9 on the right side wall of the door 2-7. Open the door 2-7, which is hinged to the front end of the PVC housing 2-1, remove the expired desiccant 2-2 from the fixing frame 2-3, replace it with a new desiccant 2-2, close the door 2-7 again, pass the screw 2-8 through the through hole, and tighten the nut 2-4 to ensure that the door 2-7 is tightly closed with the PVC housing 2-1, continuing its waterproof and moisture-proof function. Meanwhile, the multiple heat dissipation fins 1-3 fixedly connected to the outer surface of the transformer housing 1-1 help dissipate heat from the transformer mechanism 1, ensuring the normal operation of the transformer.

[0026] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A waterproof voltmeter for transformers, comprising a transformer mechanism (1), characterized in that: The transformer mechanism (1) includes a transformer housing (1-1), a three-phase winding (1-2) fixedly connected in the inner cavity of the transformer housing (1-1), and a transformer voltmeter (1-5) connected to the top left side of the transformer housing (1-1). A waterproof voltmeter component (2) is fixedly connected to the outer surface of the transformer voltmeter (1-5). The waterproof voltmeter component (2) includes a PVC housing (2-1), a door (2-7) hinged to the front end face of the PVC housing (2-1), and a silicone sealing gasket (2-6) fixed to the front port of the PVC housing (2-1) with adhesive. A fixing frame (2-3) is fixedly connected to the top surface of the inner cavity of the PVC housing (2-1). A desiccant (2-2) is inserted into the inside of the fixing frame (2-3). A glass plate (2-10) for observing the value of the transformer voltmeter (1-5) is embedded and fixed inside the door (2-7).

2. The waterproof voltmeter for transformers according to claim 1, characterized in that: Multiple heat dissipation fins (1-3) are fixedly connected to the outer surface of the transformer housing (1-1).

3. A waterproof voltmeter for transformers according to claim 1, characterized in that: The bottom end face of the PVC shell (2-1) is fixedly connected to the upper surface of the transformer box (1-1).

4. A waterproof voltmeter for transformers according to claim 1, characterized in that: The interior of the box door (2-7) is provided with a square opening for the glass plate (2-10) to be inlaid and fixed.

5. A waterproof voltmeter for transformers according to claim 1, characterized in that: A protrusion (2-5) is fixedly connected to the right side wall of the PVC shell (2-1), and a fixing block (2-9) is fixedly connected to the right side wall of the door (2-7).

6. A waterproof voltmeter for transformers according to claim 5, characterized in that: Both the protrusion (2-5) and the fixing block (2-9) have through holes inside, through which a screw (2-8) passes, and a nut (2-4) is screwed onto the rear section of the screw (2-8).

7. A waterproof voltmeter for transformers according to claim 1, characterized in that: The fixed frame (2-3) has a slot inside for the drying sheet (2-2) to be inserted and fixed.

8. A waterproof voltmeter for transformers according to claim 1, characterized in that: The drying sheet (2-2) has multiple adsorption pores inside to adsorb moisture from the inside of the PVC shell (2-1).

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