A GIS gas chamber vacuum measurement device

Abstract

The utility model discloses a kind of GIS gas chamber vacuum measurement devices, it is related to electrical equipment technical field, specifically, including: at least two measurement modules and quick docking connector, further include: modular connection mechanism, setting in the other side of measurement module is used to joint fixing quick docking connector;Sampling connector, sampling channel is formed in the side wall of measurement module;Negative pressure pipe assembly is threadedly connected with sampling connector for extracting gas detection sample.The GIS gas chamber vacuum measurement device, by modularization design, can combine multiple measurement modules to simultaneously perform vacuumizing processing to multiple GIS gas chambers, doubles operation efficiency, shortens engineering cycle, using quick docking connector and modular connection mechanism to assemble, can guarantee the stability of connection, when being in vacuumizing state, control valve on pipe connector can also be opened, so that air is extracted by negative pressure sampling pipe, convenient for sampling detection analysis.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, specifically to a GIS gas chamber vacuum measurement device. Background Technology

[0002] Gas-insulated switchgear (GIS) is widely used in power systems due to its advantages such as small footprint, high operational reliability, and low maintenance workload. The insulation performance and operational safety of GIS are highly dependent on the pressure and purity of the high-purity sulfur hexafluoride (SF6) gas filling it. Therefore, after the manufacture, installation, or major overhaul of GIS equipment, its gas chamber must undergo rigorous vacuuming to remove air and moisture.

[0003] Currently, vacuuming operations in GIS gas chambers mostly employ the traditional single-pump, single-point method. Existing technology discloses a GIS gas chamber vacuum measurement device, which typically includes a vacuum pump, a piping system, a vacuum gauge, and a manual valve. This traditional method has the following significant drawbacks: Low operational efficiency: One set of equipment can only process one gas chamber at a time. For GIS substations with multiple gas chambers, each chamber needs to be processed individually, which consumes a lot of time and manpower.

[0004] Low level of automation: Processes such as vacuuming, pressure holding, measurement, and data recording rely heavily on manual operation and judgment, which can easily lead to errors due to differences in the experience of operators, affecting the consistency of processing quality.

[0005] Limited Functionality: Traditional devices primarily focus on vacuum levels, lacking the ability to accurately sample and analyze residual gas components (such as moisture content) or requiring cumbersome operation. Therefore, there is an urgent need to develop a GIS-based vacuum measurement device capable of multi-station parallel operation, traceability, and reliable connectivity to address the shortcomings of existing technologies. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a GIS gas chamber vacuum measurement device, which achieves high efficiency in the GIS gas chamber vacuum measurement process, ensures measurement accuracy, and enables quality traceability.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a GIS gas chamber vacuum measuring device, comprising: At least two measurement modules, each independently configured and including a pressure detection unit, a flow control unit, and a pipe connector, wherein the measurement modules are connected to the GIS gas chamber via pipe connectors and hoses; At least three quick-connect couplings are provided, one of which connects to the vacuum pump tube and the vacuum pump, and the other quick-connect couplings are located on one side of the measurement module to connect multiple measurement modules in series or parallel. A modular connection mechanism is provided on the other side of the measurement module for snapping and fixing the quick-connect connector; The sampling connector is set on the side wall of the measurement module to form a sampling channel; The negative pressure tube assembly, threadedly connected to the sampling connector, is used to extract gas detection samples.

[0008] Optionally, the pressure detection unit is a dual-range pressure gauge, and the pressure detection unit and the pipeline connector are respectively installed on the flow control unit. The internal flow channels of the measurement module are respectively connected to the flow control unit and the sampling connector.

[0009] Optionally, the outer wall of the quick-connect joint has an inwardly recessed circular limiting groove.

[0010] Optionally, the modular connection mechanism includes a connecting tube fixedly mounted on the measuring module, the side wall of the connecting tube being rotatably connected to a latch, the latch having a protrusion adapted to a circular limiting groove.

[0011] Optionally, a sealing ring is snapped into the inner wall of the connecting pipe, and a sealing state is formed when the quick-connect coupling abuts against the sealing ring. A torsion spring is fitted on the shaft of the locking buckle and elastically engages with the inner wall of the connecting pipe through the torsion spring.

[0012] Optionally, the negative pressure tube assembly includes a tube connector that is threadedly connected to a sampling connector. A control valve is provided on the side wall of the tube connector, and a negative pressure sampling tube is threadedly connected to one end of the tube connector.

[0013] Optionally, the flow control unit is a solenoid valve.

[0014] This utility model provides a GIS gas chamber vacuum measurement device, which has the following advantages: The GIS gas chamber vacuum measurement device, through modular design, can combine multiple measurement modules to perform vacuum treatment on multiple GIS gas chambers simultaneously, thereby significantly improving work efficiency and shortening the project cycle. It is assembled using quick-connect joints and modular connection mechanisms to ensure connection stability. When vacuuming, the control valve on the pipe joint can be opened to extract air through the negative pressure sampling tube, which is convenient for sampling, testing and analysis. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2This is a schematic diagram of the disassembled structure of this utility model; Figure 3 This is a partial cross-sectional view of the present invention. Figure 4 This is a top view sectional structural diagram of the present invention; Figure 5 This utility model Figure 1 A schematic diagram of the side view structure; Figure 6 This is a schematic diagram of the front cross-sectional structure of this utility model.

[0016] In the diagram: 1. Measurement module; 11. Pressure detection unit; 12. Flow control unit; 13. Pipe connector; 2. Quick-connect connector; 21. Circular limiting groove; 3. Vacuum pump tube; 4. Modular connection mechanism; 41. Connecting pipe; 42. Lock; 43. Sealing ring; 5. Sampling connector; 6. Negative pressure pipe assembly; 61. Pipe connector; 62. Control valve; 63. Negative pressure sampling tube. Detailed Implementation

[0017] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] Please see Figures 1 to 6 This utility model provides a technical solution: a GIS gas chamber vacuum measurement device. In this embodiment, three measurement modules 1 are shown working in parallel, with each module independently connected to a GIS gas chamber. A quick-connect connector 2 is used to connect a vacuum pump tube 3, which is connected to an external high-performance vacuum pump assembly.

[0020] Specifically, including: At least two measurement modules 1, each measurement module 1 is independently set and includes a pressure detection unit 11, a flow control unit 12 and a pipeline connector 13. The measurement module 1 is connected to the GIS gas chamber through the pipeline connector 13 and a connecting hose. The flow control unit 12 adopts a high-frequency response solenoid valve, which can receive instructions from the central control unit and accurately control the opening and closing of the gas path and the flow rate. At least three quick-connect connectors 2, one of which is connected to the vacuum pump tube 3 and the vacuum pump, and the other quick-connect connectors 2 are respectively set on one side of the measuring module 1, for combining multiple measuring modules 1 in series or parallel. A plug is also inserted into the quick-connect connector at one end to form a seal. Modular connection mechanism 4 is located on the other side of measurement module 1 for snapping and fixing quick docking connector 2; Sampling connector 5 is set on the side wall of measurement module 1 to form a sampling channel; The negative pressure tube assembly 6 is threadedly connected to the sampling connector 5 for extracting gas detection samples.

[0021] As a preferred embodiment, based on the above method, the pressure detection unit 11 is further configured as a dual-range pressure gauge, and the pressure detection unit 11 and the pipeline connector 13 are respectively installed on the flow control unit 12. The internal flow channels of the measurement module 1 are respectively connected to the flow control unit 12 and the sampling connector 5.

[0022] The outer wall of the quick-connect connector 2 has an inwardly recessed circular limiting groove 21.

[0023] The modular connection mechanism 4 includes a connecting tube 41 fixedly mounted on the measuring module 1. A latch 42 is rotatably connected to the side wall of the connecting tube 41. The latch 42 has a shaft and a protrusion that matches the circular limiting groove 21.

[0024] A sealing ring 43 is snapped into the inner wall of the connecting pipe 41. When the quick-connect connector 2 abuts against the sealing ring 43, a sealing state is formed. A torsion spring is fitted on the shaft of the locking buckle 42 and elastically engages with the inner wall of the connecting pipe 41 through the torsion spring.

[0025] Specifically, the connection between modules is achieved through quick-connect couplings 2 and modular connection mechanisms 4. The outer wall of the quick-connect coupling 2 is designed with a circular limiting groove 21. The connecting tube 41 of the modular connection mechanism 4 is fixed to the measuring module 1, and a sealing ring 43 is installed inside. When the quick-connect coupling 2 is inserted into the connecting tube 41, the end face of the coupling presses against the sealing ring 43 to form a preliminary seal. Subsequently, rotating the locking buckle 42 causes its protrusion to engage with the circular limiting groove 21, firmly locking the coupling. A torsion spring is mounted on the shaft of the locking buckle 42 to provide locking force.

[0026] As a preferred embodiment, based on the above method, the negative pressure tube assembly 6 further includes a tube connector 61, which is threadedly connected to the sampling connector 5. A control valve 62 is provided on the side wall of the tube connector 61, and a negative pressure sampling tube 63 is threadedly connected to one end of the tube connector 61.

[0027] The flow control unit 12 is a solenoid valve. Specifically, the sampling connector 5 is located on the side wall of the measurement module 1. When residual gas needs to be analyzed, the pipe connector 61 of the negative pressure pipe assembly 6 is screwed onto the sampling connector 5. In this embodiment, the control valve 62 on the pipe connector 61 is a solenoid valve, and its control line is also connected to the central control unit. When the system reaches the preset sampling vacuum level, the central control unit will automatically issue a command to open the control valve 62, using the pressure difference between the inside and outside of the gas chamber to draw a small amount of gas into the negative pressure sampling pipe 63, and automatically close it after sampling is completed.

[0028] 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 GIS gas chamber vacuum measuring device, characterized in that: include: At least two measurement modules (1), each measurement module (1) is independently set up and includes a pressure detection unit (11), a flow control unit (12) and a pipe connector (13), the measurement module (1) being connected to the GIS air chamber via a pipe connector (13); At least three quick-connect connectors (2), one of which connects to the vacuum pump tube (3) and the vacuum pump, and the other quick-connect connectors (2) are respectively set on one side of the measurement module (1) for connecting multiple measurement modules (1) in series or in parallel. A modular connection mechanism (4) is provided on the other side of the measurement module (1) for snapping and fixing the quick docking connector (2). The sampling connector (5) is set on the side wall of the measurement module (1) to form a sampling channel; The negative pressure tube assembly (6) is threadedly connected to the sampling connector (5) for extracting gas detection samples.

2. The GIS gas chamber vacuum measuring device according to claim 1, characterized in that: The pressure detection unit (11) is a dual-range pressure gauge. The pressure detection unit (11) and the pipeline connector (13) are respectively installed on the flow control unit (12). The measurement module (1) has flow channels inside that are connected to the flow control unit (12) and the sampling connector (5).

3. The GIS gas chamber vacuum measuring device according to claim 1, characterized in that: The outer wall of the quick-connect connector (2) has an inwardly recessed circular limiting groove (21).

4. The GIS gas chamber vacuum measuring device according to claim 3, characterized in that: The modular connection mechanism (4) includes a connecting tube (41) fixedly installed on the measuring module (1), and a latch (42) is rotatably connected to the side wall of the connecting tube (41). The latch (42) has a protrusion that is adapted to the circular limiting groove (21).

5. The GIS gas chamber vacuum measuring device according to claim 4, characterized in that: The inner wall of the connecting pipe (41) is fitted with a sealing ring (43). When the quick-connect connector (2) abuts against the sealing ring (43), a sealing state is formed. A torsion spring is fitted on the shaft of the latch (42) and elastically engages with the inner wall of the connecting pipe (41) through the torsion spring.

6. The GIS gas chamber vacuum measuring device according to claim 1, characterized in that: The negative pressure tube assembly (6) includes a tube connector (61), which is threadedly connected to the sampling connector (5). A control valve (62) is provided on the side wall of the tube connector (61), and a negative pressure sampling tube (63) is threadedly connected to one end of the tube connector (61).

7. The GIS gas chamber vacuum measuring device according to claim 1, characterized in that: The flow control unit (12) is a solenoid valve.

Images