Explosion-proof voltage transformer

Abstract

The utility model belongs to the technical field of voltage transformers, and particularly relates to an anti-explosion voltage transformer which comprises an anti-explosion assembly, a packaging bottom plate, a packaging shell, a sealing mechanism and a wire holder. The anti-explosion assembly comprises an anti-explosion box body, an anti-explosion cover plate and an anti-explosion fixing piece. The side surface of the explosion-proof cover plate is provided with a wiring pipe which is provided with a wiring port. The sealing mechanism comprises a first sealing assembly and a second sealing assembly. The first sealing assembly comprises a first sealing seat, a first sealing ring and a first sealing plunger. The second sealing assembly comprises a second sealing seat, a second sealing ring and a second sealing plunger. According to the anti-explosion voltage transformer provided by the invention, the combination of the anti-explosion box body, the anti-explosion cover plate and the anti-explosion bolt is adopted, so that flames and pressure generated by internal explosion can be effectively prevented from diffusing to the outside, and the use safety in a dangerous environment is ensured.

Description

An explosion-proof voltage transformer Technical Field

[0001] This utility model belongs to the technical field of voltage transformers, and in particular relates to an explosion-proof voltage transformer. Background Technology

[0002] Voltage transformers are crucial devices in power systems used to measure voltage and provide protection and control signals. In certain special operating environments, such as those containing flammable and explosive gases or dust, voltage transformers may explode due to internal faults causing electrical sparks or high temperatures, leading to serious safety accidents and property damage.

[0003] Traditional voltage transformers have certain shortcomings in explosion-proof performance. Their structural design cannot effectively prevent the flames and pressure generated by internal explosions from spreading to the outside, making it difficult to meet the requirements for use in special hazardous environments. Summary of the Invention

[0004] The purpose of this invention is to provide an explosion-proof voltage transformer, which aims to solve the technical problem that the existing technology cannot effectively prevent the spread of flames and pressure generated by internal explosions to the outside, making it difficult to meet the requirements for use in special hazardous environments.

[0005] To achieve the above objectives, the explosion-proof voltage transformer provided in this embodiment includes an explosion-proof component, an encapsulation base plate, an encapsulation shell, a sealing mechanism, and a terminal block. The explosion-proof component includes an explosion-proof enclosure, an explosion-proof cover plate, and an explosion-proof fixing component. The explosion-proof cover plate is disposed on the side of the explosion-proof enclosure, and the explosion-proof fixing component is sequentially fixed through the explosion-proof cover plate and the explosion-proof enclosure. A wiring conduit is provided on the side of the explosion-proof cover plate, and a wiring port is provided on the wiring conduit. The encapsulation base plate and the encapsulation shell are both disposed within the explosion-proof enclosure. The encapsulation base plate is connected to the explosion-proof enclosure, and the encapsulation shell is connected to the top side of the encapsulation base plate. The sealing mechanism is connected to the encapsulation shell, and the terminal block is disposed between the encapsulation base plate and the encapsulation shell, and is respectively connected to the encapsulation base plate and the encapsulation shell.

[0006] The sealing mechanism includes a first sealing component and a second sealing component. The first sealing component is disposed on one side of the second sealing component. The first sealing component includes a first sealing seat, a first sealing ring, and a first sealing plunger. The first sealing seat is connected to the encapsulation housing. The first sealing ring is connected to the top side of the first sealing seat. The first sealing plunger is inserted into the first sealing ring.

[0007] The second sealing assembly includes a second sealing seat, a second sealing ring, and a second sealing plunger. The second sealing seat is connected to the encapsulation housing, the second sealing ring is connected to the top side of the second sealing seat, and the second sealing plunger is inserted into the second sealing ring.

[0008] As an optional solution of this utility model, the explosion-proof fastener is an explosion-proof bolt, which is sequentially threaded to the explosion-proof cover plate and the explosion-proof enclosure, and the explosion-proof cover plate is fixedly installed in the explosion-proof enclosure.

[0009] As an optional solution of this utility model, two wiring pipes are provided, both of which are fixedly connected to the side of the explosion-proof cover plate, and the two wiring pipes are arranged in parallel and opposite directions.

[0010] As an optional solution of this utility model, the packaging base plate is provided with four mounting holes, which are evenly distributed on the packaging base plate; the packaging base plate and the packaging shell are integrally formed.

[0011] As an optional solution of this utility model, the side of the packaging shell is provided with a pressure-resistant groove. There are two pressure-resistant grooves, both of which are provided on the side of the packaging shell. The pressure-resistant grooves are arranged in a trapezoidal shape.

[0012] As an optional embodiment of this utility model, the first sealing plunger is interference-fitted with the first sealing ring; the second sealing plunger is interference-fitted with the second sealing ring.

[0013] As an optional solution of this utility model, the terminal block is fixedly connected to the packaging base plate and the packaging shell respectively; the terminal block is provided with a wiring hole in the middle, the wiring hole is connected to the packaging shell, and the terminal block is provided with a wiring groove on the side, and there are two wiring grooves, which are arranged in parallel and opposite directions.

[0014] The explosion-proof voltage transformer provided in this embodiment of the present invention has at least one of the following technical effects:

[0015] The explosion-proof voltage transformer provided in this application, by employing a combination of explosion-proof enclosure, explosion-proof cover and explosion-proof bolts, can effectively prevent the flames and pressure generated by an internal explosion from spreading to the outside, ensuring safe use in hazardous environments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 is a perspective view of the explosion-proof voltage transformer provided in an embodiment of this utility model.

[0018] Figure 2 is a perspective view of the explosion-proof voltage transformer provided in this embodiment of the present invention after omitting the explosion-proof components.

[0019] Figure 3 is a perspective view of the explosion-proof voltage transformer provided in this embodiment of the present invention after omitting the explosion-proof components.

[0020] Figure 4 is an exploded view of the explosion-proof voltage transformer provided in this embodiment of the present invention after omitting the explosion-proof components.

[0021] Figure 5 is an exploded view of the explosion-proof voltage transformer provided in this embodiment of the present invention after omitting the explosion-proof components.

[0022] The following are the labeling elements in the figure:

[0023] 1. Encapsulation base plate; 2. Encapsulation housing; 3. Terminal block; 4. First sealing assembly; 5. Second sealing assembly; 6. Explosion-proof assembly;

[0024] 11. Install the bottom hole;

[0025] 21. Compression groove;

[0026] 31. Wiring hole; 32. Wiring groove;

[0027] 41. First sealing seat; 42. First sealing ring; 43. First sealing plunger;

[0028] 51. Second sealing seat; 52. Second sealing ring; 53. Second sealing plunger.

[0029] 61. Explosion-proof enclosure; 62. Explosion-proof cover; 63. Explosion-proof bolts; 64. Wiring pipe; 65. Wiring port. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0031] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0034] In one embodiment of this utility model, as shown in Figures 1-5, an explosion-proof voltage transformer is provided, including an explosion-proof component 6, an encapsulation base plate 1, an encapsulation shell 2, a sealing mechanism, and a terminal block 3. The explosion-proof component 6 includes an explosion-proof enclosure 61, an explosion-proof cover plate 62, and explosion-proof fasteners. The explosion-proof cover plate 62 is disposed on the side of the explosion-proof enclosure 61. The explosion-proof fasteners are sequentially fixedly inserted through the explosion-proof cover plate 62 and the explosion-proof enclosure 61. A wiring conduit 64 is provided on the side of the explosion-proof cover plate 62, and a wiring port 65 is provided on the wiring conduit 64. The encapsulation base plate 1 and the encapsulation shell 2 are both disposed inside the explosion-proof enclosure 61. The encapsulation base plate 1 is fixedly connected inside the explosion-proof enclosure 61, and the encapsulation shell 2 is fixedly connected to the top side of the encapsulation base plate 1. The sealing mechanism is connected to the encapsulation shell 2. The terminal block 3 is disposed between the encapsulation base plate 1 and the encapsulation shell 2, and is fixedly connected to the encapsulation base plate 1 and the encapsulation shell 2 respectively.

[0035] The explosion-proof enclosure 61 and the explosion-proof cover 62 together form a relatively enclosed space, encapsulating the core components of the voltage transformer. Explosion-proof bolts 63 firmly fix the explosion-proof cover 62 to the explosion-proof enclosure 61, ensuring the stability of the entire explosion-proof structure. In the event of an explosion inside the voltage transformer due to a fault or other reasons, the explosion-proof enclosure 61 and the explosion-proof cover 62 can withstand the pressure generated by the explosion, preventing the explosion flames and high-temperature gases from directly spreading to the outside, thereby avoiding the risk of an explosion in the surrounding environment.

[0036] The sealing mechanism includes a first sealing component 4 and a second sealing component 5. The first sealing component 4 is disposed on one side of the second sealing component 5. The first sealing component 4 includes a first sealing seat 41, a first sealing ring 42 and a first sealing plunger 43. The first sealing seat 41 is connected to the encapsulation housing 2, the first sealing ring 42 is connected to the top side of the first sealing seat 41, and the first sealing plunger 43 is inserted into the first sealing ring 42.

[0037] The second sealing assembly 5 includes a second sealing seat 51, a second sealing ring 52, and a second sealing plunger 53. The second sealing seat 51 is connected to the encapsulation housing 2, the second sealing ring 52 is connected to the top side of the second sealing seat 51, and the second sealing plunger 53 is inserted into the second sealing ring 52.

[0038] A dual sealing assembly is adopted, namely the first sealing assembly 4 and the second sealing assembly 5. The first sealing plunger 43 is interference-fitted with the first sealing ring 42, and the second sealing plunger 53 is interference-fitted with the second sealing ring 52. This interference fit ensures tightness of the seal and effectively prevents external impurities such as dust and moisture from entering the encapsulation shell, providing a stable working environment for the voltage transformer. Due to the improved sealing performance, the encapsulation shell can effectively block the intrusion of dust. At the same time, the integrated encapsulation base plate 1 and encapsulation shell 2 structure reduces gaps, further reducing the possibility of dust intrusion, protecting the electrical components of the voltage transformer from dust, and improving its working stability and reliability.

[0039] The explosion-proof voltage transformer provided in this application, by employing a combination of an explosion-proof enclosure 61, an explosion-proof cover 62, and explosion-proof bolts 63, can effectively prevent the flames and pressure generated by an internal explosion from spreading to the outside, ensuring safe use in hazardous environments.

[0040] In another embodiment of this utility model, the explosion-proof fastener is an explosion-proof bolt 63, which is sequentially threaded to the explosion-proof cover plate 62 and the explosion-proof enclosure 61, and fixes the explosion-proof cover plate 62 to the explosion-proof enclosure 61. Through the threaded connection, the explosion-proof bolt 63 can tightly connect the explosion-proof cover plate 62 and the explosion-proof enclosure 61, making them a stable integrated structure. Thus, when the voltage transformer is operating normally or when a pressure surge occurs due to an internal fault, the explosion-proof cover plate 62 will not easily loosen or fall off, ensuring that the explosion-proof component 6 can effectively perform its explosion-proof function.

[0041] In another embodiment of this utility model, two connecting pipes 64 are provided, both fixedly connected to the side of the explosion-proof cover 62, and the two connecting pipes 64 are arranged parallel and opposite to each other. The two connecting pipes 64 are used to connect different electrical circuits. For example, one connecting pipe 64 can be connected to a power supply line to provide input voltage to the voltage transformer; the other connecting pipe 64 can be connected to the circuit of a measuring or protection device to output the low voltage signal converted by the transformer, thereby realizing the complete connection between the voltage transformer and the external electrical system and meeting the needs of the power system for voltage measurement, protection and control functions.

[0042] In another embodiment of this utility model, the encapsulation base plate 1 is provided with four mounting holes 11, which are evenly distributed on the encapsulation base plate 1; the encapsulation base plate 1 and the encapsulation shell 2 are integrally formed. The four evenly distributed mounting holes 11 can be used to securely install the voltage transformer's encapsulation shell onto target structures such as distribution cabinets or equipment brackets through bolts, screws, or other connecting parts, ensuring that the encapsulation shell is fixed in position during operation and will not shake or shift arbitrarily, providing a foundation for the stable operation of the internal voltage transformer. The evenly distributed mounting holes 11 facilitate the determination of the encapsulation shell's orientation and angle during installation, ensuring the accuracy and consistency of installation and facilitating standardized installation operations.

[0043] In another embodiment of this utility model, the side of the encapsulation housing 2 is provided with pressure-resistant grooves 21. There are two pressure-resistant grooves 21, both of which are disposed on the side of the encapsulation housing 2, and the pressure-resistant grooves 21 are trapezoidal in shape. When subjected to accidental collisions or vibrations, the trapezoidal pressure-resistant grooves 21 can play a buffering role. They can absorb some of the impact energy, reduce the impact force transmitted to the internal voltage transformer, and reduce the risk of equipment failure due to external impact.

[0044] In another embodiment of this utility model, the first sealing plunger 43 is interference-fitted with the first sealing ring 42; the second sealing plunger 53 is interference-fitted with the second sealing ring 52. The interference fit ensures that there is no gap or only a very small gap between the sealing plunger and the sealing ring. When the sealing plunger is inserted into the sealing ring, the sealing ring undergoes elastic deformation, tightly wrapping the sealing plunger, thereby preventing external dust, moisture, gas, and other substances from entering the encapsulation shell, effectively protecting the voltage transformer from external environmental factors and ensuring its normal operation. The interference fit relies on the elastic restoring force of the sealing ring and the friction between the plunger and the sealing ring to maintain the sealing state. Even if vibration occurs or external forces are applied during equipment operation, the interference fit structure can ensure the stability of the sealing performance, making leakage less likely and improving the reliability and durability of the seal.

[0045] In another embodiment of this utility model, the terminal block 3 is fixedly connected to the encapsulation base plate 1 and the encapsulation shell 2 respectively; the terminal block 3 has a wiring hole 31 in the middle, which is connected to the encapsulation shell 2; the terminal block 3 has two wiring grooves 32 on its side, which are arranged in parallel and opposite directions. The terminal block 3 is located between and connected to the encapsulation base plate 1 and the encapsulation shell 2. Its wiring hole 31 is used for the introduction of voltage transformer cables, and the side wiring grooves 32 facilitate cable management and fixation, realizing a reliable connection between the voltage transformer and the external circuit.

[0046] The explosion-proof voltage transformer provided in this application, by employing a combination of an explosion-proof enclosure 61, an explosion-proof cover 62, and explosion-proof bolts 63, can effectively prevent the flames and pressure generated by an internal explosion from spreading to the outside, ensuring safe use in hazardous environments.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An explosion-proof voltage transformer, characterized in that, The device includes an explosion-proof assembly, an encapsulation base plate, an encapsulation shell, a sealing mechanism, and a terminal block. The explosion-proof assembly includes an explosion-proof enclosure, an explosion-proof cover plate, and explosion-proof fasteners. The explosion-proof cover plate is disposed on the side of the explosion-proof enclosure. The explosion-proof fasteners are sequentially fixed through the explosion-proof cover plate and the explosion-proof enclosure. A wiring conduit with a connection port is provided on the side of the explosion-proof cover plate. The encapsulation base plate and the encapsulation shell are both disposed within the explosion-proof enclosure. The encapsulation base plate is connected to the explosion-proof enclosure, and the encapsulation shell is connected to the top side of the encapsulation base plate. The sealing mechanism is connected to the encapsulation shell. The terminal block is disposed between the encapsulation base plate and the encapsulation shell, and is connected to the encapsulation shell. The base plate and the encapsulation housing are connected; the sealing mechanism includes a first sealing component and a second sealing component. The first sealing component is disposed on one side of the second sealing component. The first sealing component includes a first sealing seat, a first sealing ring, and a first sealing plunger. The first sealing seat is connected to the encapsulation housing, the first sealing ring is connected to the top side of the first sealing seat, and the first sealing plunger is inserted into the first sealing ring. The second sealing component includes a second sealing seat, a second sealing ring, and a second sealing plunger. The second sealing seat is connected to the encapsulation housing, the second sealing ring is connected to the top side of the second sealing seat, and the second sealing plunger is inserted into the second sealing ring.

2. The explosion-proof voltage transformer according to claim 1, characterized in that, The explosion-proof fastener is an explosion-proof bolt, which is sequentially threaded to the explosion-proof cover plate and the explosion-proof enclosure, and the explosion-proof cover plate is fixedly installed in the explosion-proof enclosure.

3. The explosion-proof voltage transformer according to claim 1, characterized in that, Two wiring conduits are provided, both of which are fixedly connected to the side of the explosion-proof cover plate. The two wiring conduits are arranged in parallel and opposite directions.

4. The explosion-proof voltage transformer according to claim 1, characterized in that, The packaging base plate is provided with four mounting holes, which are evenly distributed on the packaging base plate; the packaging base plate and the packaging shell are integrally formed.

5. The explosion-proof voltage transformer according to claim 1, characterized in that, The packaging shell has two pressure-resistant grooves on its side, both of which are located on the side of the packaging shell and are trapezoidal in shape.

6. The explosion-proof voltage transformer according to claim 1, characterized in that, The first sealing plunger is interference-fitted with the first sealing ring; the second sealing plunger is interference-fitted with the second sealing ring.

7. The explosion-proof voltage transformer according to claim 1, characterized in that, The terminal block is fixedly connected to the packaging base plate and the packaging shell respectively; the terminal block has a wiring hole in the middle, which is connected to the packaging shell; the terminal block has a wiring groove on the side, and there are two wiring grooves, which are arranged in parallel and opposite directions.

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