A high pressure metering tank

Abstract

A high-voltage metering box comprises an outer box body, which is internally separated into multiple functional chambers by a partition, the functional chambers comprising an inner box body, a mechanism chamber, a low-voltage chamber, a communication chamber, a metering chamber and a PT chamber; the front face of the outer box body is provided with a front door corresponding to and opening to the mechanism chamber, the low-voltage chamber and the communication chamber to form an operation face; the rear face of the outer box body is provided with a rear door corresponding to and opening to the metering chamber and the PT chamber to form a data maintenance channel; the left and right sides of the outer box body are respectively provided with a left door and a right door corresponding to the incoming line side and the outgoing line side for connecting with external cables; the inner box body is located in the center of each chamber and is connected with the mechanism chamber, the metering chamber and the PT chamber through a sleeve and a mechanism. By effectively isolating different functional chambers, specific doors are opened as needed during operation, which not only improves efficiency but also greatly improves safety.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically a high-voltage metering box. Background Technology

[0002] High-voltage metering boxes are crucial devices for measuring and metering electrical energy in power systems, widely used in substations, distribution rooms, industrial and mining enterprises, and outdoor high-voltage transmission lines. Their core function is to convert high voltage and high current into low voltage and low current signals for use by metering instruments, ensuring the accuracy and safety of electrical energy measurement. Most existing high-voltage metering boxes use air insulation, leaving their internal live components, such as copper busbars and connection points, directly exposed to the air. While this design is cost-effective, it poses significant safety hazards. When the equipment operates in harsh environments such as dampness and pollution for extended periods, the air insulation performance deteriorates considerably, easily leading to flashover, breakdown, and other accidents. Furthermore, the exposed live components pose a high risk of electric shock to personnel during operation and maintenance, seriously threatening the safety of operators.

[0003] Furthermore, traditional high-voltage metering boxes often employ an integrated structural design, with highly integrated functional units lacking effective physical isolation. This design often necessitates a complete power outage and extensive disassembly and repair in the event of a malfunction, increasing maintenance difficulty and significantly extending outage time. In addition, the compact internal layout makes it easy for maintenance personnel to accidentally touch live parts during inspections, further increasing safety risks. Once a component fails, the entire unit typically needs to be replaced, significantly increasing maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a high-pressure metering box to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-pressure metering box includes an outer casing, the interior of which is divided into multiple functional chambers by partitions. The functional chambers include an inner casing, a mechanism chamber, a low-pressure chamber, a communication chamber, a metering chamber, and a PT chamber. The outer casing is provided with a front door, which corresponds to and opens to the mechanism room, low-voltage room and communication room, forming an operating surface; The outer casing has a rear door that opens to the metering room and PT room, forming a data maintenance channel. The outer casing is provided with a left door and a right door on the left and right sides, respectively, corresponding to the inlet side and the outlet side, for connecting to external cables; The communication room is independently located in the area corresponding to the front door, and is isolated from the mechanism room and the low-voltage room by a partition. The communication room is connected to the metering room by electrical lines, forming an independent metering-communication integrated maintenance channel. The inner casing is located in the center of each chamber and is connected to the mechanism chamber, metering chamber and PT chamber through sleeves and mechanisms to realize electrical switching and metering.

[0006] In one possible implementation, the operating surface is provided with an interlocking device configured to prevent the left and right doors from opening when the enclosure is energized.

[0007] In one possible implementation, the metering chamber and the PT chamber are isolated from each other by a partition, and the PT chamber is equipped with an electromagnetic lock for allowing the door of the PT chamber to be opened when the power to the circuit to which the PT chamber belongs is cut off.

[0008] In one possible implementation, the inner housing includes an inlet bushing, an outlet bushing, an environmentally friendly gas switch, a metering bushing, and a PT bushing. The inlet bushing and the outlet bushing correspond to the inlet side and the outlet side, respectively. The environmentally friendly gas switch is connected to the metering bushing and the PT bushing via a copper busbar to realize electrical switching and sensor signal transmission.

[0009] In one possible implementation, the mechanism chamber is equipped with a circuit breaker mechanism and an isolation mechanism, which are connected to an environmentally friendly gas switch in the inner enclosure for controlling the on / off state of the high-voltage circuit.

[0010] In one possible implementation, the communication room is equipped with a remote communication module, the metering room is equipped with an electricity meter, and the electrical wiring between the communication room and the metering room forms a short-path data link.

[0011] In one possible implementation, partitions are provided between the inlet and outlet sides of the outer casing and the chambers corresponding to the front and rear doors to achieve physical isolation.

[0012] Compared with the prior art, the present invention has the following advantages: 1. By effectively isolating different functional chambers, specific doors can be opened and closed as needed during operation, which not only improves efficiency but also greatly enhances safety.

[0013] 2. By establishing independent data maintenance channels between the communication room and the metering room in the back door area, physical separation of operation and maintenance work is achieved. When maintenance personnel are handling meter reading, communication equipment debugging, or troubleshooting, they only need to open the back door to complete all operations without interfering with the normal operation of the front door.

[0014] 3. By setting up the communication room independently and away from the low-voltage room with its complex electromagnetic environment, electromagnetic interference generated during the operation of power equipment is effectively avoided. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention after the front door has been removed; Figure 2 This is a schematic diagram of the overall structure of this utility model after the back door has been removed; Figure 3 This is a front view of the present invention; Figure 4 This is a schematic diagram of the back of the present invention; Figure 5 for Figure 1 The front view; Figure 6 This is a schematic diagram of the internal structure of the present invention; Figure 7 for Figure 6 A schematic diagram of the middle part of the structure. Detailed Implementation

[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structure, features and effects of this utility model.

[0017] like Figures 1-7 As shown, a high-voltage metering box includes an outer casing 1. The interior of the outer casing 1 is divided into multiple functional chambers by partitions. The functional chambers include an inner casing 10, a mechanism chamber 2, a low-voltage chamber 3, a communication chamber 4, a metering chamber 5, and a PT chamber 6. The outer casing 1 has a front door 11 that opens to the mechanism chamber 2, low-voltage chamber 3, and communication chamber 4, forming an operating surface. The outer casing 1 has a rear door 12 that opens to the metering chamber 5 and PT chamber 6, forming a data maintenance channel. The outer casing 1 has a left door 8 and a right door 9 on its left and right sides, respectively, corresponding to the inlet and outlet sides, for connecting to external cables. The inner casing 10 is located in the center of each chamber and is connected to the mechanism chamber 2, the metering chamber 5 and the PT chamber 6 through sleeves and mechanisms to realize electrical switching and metering.

[0018] The outer enclosure 1 adopts a four-door design (front door 11, rear door 12, left door 8, and right door 9), physically separating the operational functions (front door corresponding to the mechanism room, low-voltage room, and communication room) from the maintenance functions (rear door corresponding to the metering room and PT room). This partitioning design is based on the concepts of "operation channel" and "data maintenance channel" in the document, improving operational safety and maintenance convenience.

[0019] The communication room 4 is independently located in the area corresponding to the front door 11 and is isolated from the mechanism room 2 and the low-voltage room 3 by a partition. The communication room 4 is connected to the metering room 5 by an electrical line, forming an independent metering-communication integrated maintenance channel. This effectively solves the problem that communication equipment in traditional metering boxes is susceptible to electromagnetic interference, achieves anti-interference effect, and shortens the maintenance path, making data link maintenance easier.

[0020] Furthermore, the operating surface is equipped with an interlocking device 7. When the enclosure is energized, the interlocking is automatically activated, locking the left door 8 and the right door 9, while allowing the left door 8 and the right door 9 to be opened when the enclosure is de-energized.

[0021] The metering chamber 5 and the PT chamber 6 are isolated from each other by a partition, ensuring that the functional units do not interfere with each other. Furthermore, the PT chamber 6 is equipped with an electromagnetic lock, which releases the lock only when the power to the PT chamber 6's circuit is cut off; otherwise, it remains locked. This prevents misoperation under high-voltage conditions and improves maintenance safety.

[0022] The internal structure of each functional chamber is described below: The inner housing 10 includes an inlet bushing 101, an outlet bushing 105, an environmentally friendly gas switch 102, a metering bushing 103, and a PT bushing 106. The inlet bushing 101 and the outlet bushing 105 correspond to the inlet side and the outlet side, respectively. The environmentally friendly gas switch 102 is connected to the metering bushing 103 and the PT bushing 106 through a copper busbar to realize electrical switching and sensor signal transmission.

[0023] The mechanism room 2 is equipped with a circuit breaker mechanism 107 and an isolation mechanism 108. The circuit breaker mechanism 107 and the isolation mechanism 108 are connected to the environmental protection gas switch 102 of the inner box 10 and are used to control the on and off of the high-voltage circuit.

[0024] The communication room 4 is equipped with a remote communication module 401, and the metering room 5 is equipped with an electricity meter 501. The electrical wiring between the communication room 4 and the metering room 5 forms a short-path data link.

[0025] In this invention, partitions are provided between the inlet and outlet sides of the outer casing 1 and the corresponding chambers of the front door 11 and rear door 12 to achieve physical isolation. The partitions, particularly between the inlet / outlet sides and the operating / maintenance surfaces, ensure complete isolation between the high-voltage components and the operating area, preventing the risk of accidental entry into energized areas. Furthermore, the inlet and outlet sides can be interchanged as needed, enhancing the adaptability and compactness of the equipment.

[0026] The working process of this utility model is briefly described below: 1. High-voltage power is introduced through the left door 8 or right door 9 of the outer enclosure 1, and connected to the inlet bushing 101 of the inner enclosure 10 via cable. The inlet side can be interchanged as needed to adapt to different site layouts.

[0027] 2. The inner casing 10 serves as the insulation core and is filled with environmentally friendly gas (such as dry air or N2) to ensure the insulation distance between high-voltage components. After power enters through the inlet bushing 101, it is controlled by the environmentally friendly gas switch 102. The environmentally friendly gas switch 102 is connected to the outlet bushing 105, the metering bushing 103, and the PT bushing 106 via copper busbars to realize power distribution and conversion.

[0028] 3. The circuit breaker mechanism 107 and the isolation mechanism 108 in the mechanism room 2 are mechanically linked with the switch in the inner enclosure 10. The operator can remotely control the on / off state of the switch through the buttons or handles on the operating panel of the front door 11 to achieve safe operation of the high-voltage circuit.

[0029] 4. Electricity is introduced into metering chamber 5 via metering bushing 103, where electricity meter 501 accurately measures the electrical energy. Metering data is recorded in real time and transmitted to communication chamber 4 via a short-circuit connection. Metering chamber 5 and communication chamber 4 form a data maintenance channel in the area of ​​rear door 12. Maintenance personnel can access both chambers simultaneously by opening the rear door to perform meter readings, parameter settings, or communication equipment upgrades without interfering with the high-voltage components on the front door operating surface.

[0030] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", "left and right", "front and back", 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 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.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," 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. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A high-pressure metering box, comprising an outer casing (1), characterized in that, The outer casing (1) is divided into multiple functional chambers by partitions. The functional chambers include the inner casing (10), the mechanism chamber (2), the low-pressure chamber (3), the communication chamber (4), the metering chamber (5), and the PT chamber (6). The outer casing (1) is provided with a front door (11) which corresponds to and opens to the mechanism room (2), the low-pressure room (3) and the communication room (4) to form an operating surface; The outer casing (1) is provided with a rear door (12) which corresponds to and opens to the metering room (5) and the PT room (6) to form a data maintenance channel; The outer casing (1) is provided with a left door (8) and a right door (9) on the left and right sides respectively, corresponding to the inlet and outlet sides, for connecting with external cables; The communication room (4) is independently located in the area corresponding to the front door (11), and is isolated from the mechanism room (2) and the low-voltage room (3) by a partition. The communication room (4) is connected to the metering room (5) by an electrical line to form an independent metering-communication integrated maintenance channel. The inner box (10) is located in the center of each chamber and is connected to the mechanism chamber (2), metering chamber (5) and PT chamber (6) through sleeves and mechanisms to realize electrical switching and metering.

2. The high-pressure metering box according to claim 1, characterized in that: The operating surface is provided with an interlocking device (7), which is configured to prevent the left door (8) and right door (9) from opening when the box is energized.

3. The high-pressure metering box according to claim 1, characterized in that: The metering chamber (5) and the PT chamber (6) are isolated from each other by a partition. The PT chamber (6) is equipped with an electromagnetic lock, which is used to allow the door of the PT chamber (6) to be opened when the power to the line to which the PT chamber (6) belongs is cut off.

4. The high-pressure metering box according to claim 1, characterized in that: The inner housing (10) includes an inlet bushing (101), an outlet bushing (105), an environmentally friendly gas switch (102), a metering bushing (103), and a PT bushing (106). The inlet bushing (101) and the outlet bushing (105) correspond to the inlet side and the outlet side, respectively. The environmentally friendly gas switch (102) is connected to the metering bushing (103) and the PT bushing (106) through a copper busbar to realize electrical switching and sensor signal transmission.

5. The high-voltage metering box according to claim 1, characterized in that: The mechanism room (2) is equipped with a circuit breaker mechanism (107) and an isolation mechanism (108). The circuit breaker mechanism (107) and the isolation mechanism (108) are connected to the environmental protection gas switch (102) of the inner box (10) to control the opening and closing of the high-voltage circuit.

6. The high-pressure metering box according to claim 1, characterized in that, The communication room (4) is equipped with a remote communication module (401), and the metering room (5) is equipped with an electricity meter (501). The electrical lines between the communication room (4) and the metering room (5) form a short-path data link.

7. The high-pressure metering box according to claim 1, characterized in that: The outer casing (1) has partitions between the inlet and outlet sides and the chambers corresponding to the front door (11) and rear door (12) to achieve physical isolation.

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