CN214044412U

CN214044412U - Signal acquisition screen cabinet, signal acquisition system and monitoring system for SF6 gas densitometer

Info

Publication number: CN214044412U
Application number: CN202021688755.2U
Authority: CN
Inventors: 陈杰
Original assignee: Shanghai Lingzhi Iot Network Co ltd
Current assignee: Shanghai Lingzhi Iot Network Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-08-24
Anticipated expiration: 2030-08-13

Abstract

The utility model discloses embodiment provides a signal acquisition screen cabinet, signal acquisition system and monitoring system for SF6 gas densimeter belongs to the fortune dimension technical field of transformer substation. The signal acquisition screen cabinet includes: a cabinet body; the power supply is arranged at the top end in the cabinet body; the communication device is arranged at the bottom of the power supply in the cabinet body; the relay switch is arranged at the bottom of the communication device in the cabinet body and is used for being connected with a power supply of the electrical equipment corresponding to the SF6 gas density meter; the signal line interface is arranged at the bottom of the relay switch in the cabinet body and comprises three vertically arranged arrays, each array comprises a plurality of signal line interfaces which are arranged in a stacked mode, and the signal line interfaces are used for being connected with the SF6 gas densimeter and the communication device; and the wire grooves are arranged between the arrays at intervals or on the side wall of one side of the cabinet body and are used for providing wiring channels for signal wires connected with the signal wire interfaces.

Description

Signal acquisition screen cabinet, signal acquisition system and monitoring system for SF6 gas densitometer

Technical Field

The utility model relates to an operation and maintenance technical field of transformer substation specifically relates to a signal acquisition screen cabinet, signal acquisition system and monitoring system for SF6 gas densimeter.

Background

The role of the SF6 gas in high-voltage electrical switchgear is to extinguish and insulate the arc, and the state of the SF6 gas in the SF6 electrical equipment will seriously affect the safe operation of the SF6 electrical equipment if the state exceeds the standard. At present, SF6 generally adopts off-line measurement of micro-water content and an electronic densimeter to measure the density of SF6 gas, the off-line operation processes need the processes of power failure, air release and air supply, the operation is troublesome and unsafe, meanwhile, toxic decomposition products of the SF6 gas in operation in SF6 switch equipment have great threat to the body health of operators, and the recovery and the discharge of the discharged gas require great equipment investment and investment of manpower and material resources.

In order to avoid safety accidents, a mature measure in the prior art is to install an SF6 gas densitometer in the electrical equipment and receive a detection result through an external device, so as to determine whether the electrical equipment on site is in a safe state in real time. However, since the number of electrical devices in a substation is large, the number of SF6 gas density meters corresponding to the large number of electrical devices is also large, and thus the demand for wiring devices is further increased. The wiring equipment among the prior art is often more single, can't integrate for the wiring on scene is generally more chaotic, is unfavorable for the investigation and the maintenance in later stage.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a signal acquisition screen cabinet, signal acquisition system and monitoring system for SF6 gas densimeter, this signal acquisition screen cabinet and monitoring system can integrate ground connection SF6 gas densimeter to send the testing result through wireless network.

In order to achieve the above object, the embodiment of the present invention provides a signal acquisition screen cabinet for SF6 gas densitometer, including:

a cabinet body;

the power supply is arranged at the top end in the cabinet body;

the communication device is arranged at the bottom of the power supply in the cabinet body;

the relay switch is arranged at the bottom of the communication device in the cabinet body;

the signal line interfaces are arranged at the bottom of the relay switch in the cabinet body and comprise three arrays which are vertically arranged, and each array comprises a plurality of signal line interfaces which are arranged in a stacked mode; and

and the wire grooves are arranged between the arrays at intervals or on the side wall of one side of the cabinet body and are used for providing wiring channels for signal wires connected with the signal wire interfaces.

Optionally, a heat dissipation hole is formed in the back of the cabinet body and in a position corresponding to the power supply.

Optionally, the relay is connected with the communication device, and is used for receiving an external control signal through the communication device to close or open.

Optionally, the signal line interface includes an RS485 interface and an analog interface.

Optionally, the communication device includes a wireless antenna and a switch, the switch is disposed in the cabinet, and the wireless antenna is connected to the switch in a wired manner and disposed outside the cabinet.

On the other hand, the utility model also provides a signal acquisition system for SF6 gas densimeter, signal acquisition system includes:

a plurality of signal acquisition cabinets as described in any of the above;

and the wireless transceiver is connected with the communication device of each signal acquisition screen cabinet.

In another aspect, the present invention also provides a monitoring system, which includes:

a signal acquisition system as described above;

the SF6 gas densitometers are arranged in electrical equipment of a transformer substation, are connected with a signal line interface of the signal acquisition system, and are used for acquiring SF6 gas density of the electrical equipment in real time.

Through the technical scheme, the utility model provides a signal acquisition screen cabinet, signal acquisition system and monitoring system for SF6 gas densimeter, through adopting the gaseous densimeter of SF6 on each electrical equipment of unified wiring of signal acquisition screen cabinet, rational planning power, communication device, relay switch, signal line interface and wire casing, the space of the at utmost utilization cabinet body has solved among the prior art single and the chaotic problem of wiring that leads to the gaseous densimeter mode of SF 6.

Other features and advantages of embodiments of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention, but do not constitute a limitation of the embodiments of the invention. In the drawings:

fig. 1 is a schematic structural view of a signal acquisition cabinet for an SF6 gas densitometer according to one embodiment of the present invention;

fig. 2 is a schematic structural view of a signal acquisition cabinet for an SF6 gas densitometer according to one embodiment of the present invention;

FIG. 3 is a side view of a louvers according to one embodiment of the present invention; and

fig. 4 is a block diagram of a signal acquisition system according to an embodiment of the present invention.

Detailed Description

The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description herein is merely for purposes of illustration and explanation and is not intended to limit the embodiments of the present invention.

In the embodiments of the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, and bottom" is generally used with respect to the orientation shown in the drawings or the positional relationship between the components in the vertical, or gravitational direction.

In addition, if there is a description in the embodiments of the present invention referring to "first", "second", etc., the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments can be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or can not be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Fig. 1 is a schematic structural diagram of a signal acquisition cabinet according to an embodiment of the present invention. In fig. 1, the signal collection cabinet may include a cabinet body 01, a power supply 02, a communication device 03, a relay switch 04, a signal line interface 05, and a wire chase 06.

In fig. 1, the cabinet 01 may have multiple layers, and each layer may be separately installed with components, so that the components may be easily separated from each other. The power source 02 may be disposed at a top end within the cabinet 01, i.e., at a first level within the cabinet 01. The communication device 03 may be disposed in the cabinet 01 and located at the bottom end of the power source 02, i.e., a second layer in the cabinet 01. The relay switch 04 may be disposed in the cabinet 01 and located at the bottom of the communication device 03, i.e., a third layer in the cabinet. The signal line interface 05 may be disposed at the bottom of the relay switch 04 in the cabinet 01, and includes three arrays 05a, 05b, and 05c vertically disposed, and each array includes a plurality of signal line interfaces 04 stacked in layers. The wire slots 06 may be disposed at intervals between the arrays or on the side wall of one side of the cabinet body, for providing a wire routing channel for a signal line connected to the signal line interface 05.

In fig. 1, a power source 02 is disposed at the top end within the cabinet 01. As will be appreciated by those skilled in the art, the power supply 02 generates a large amount of heat during operation, which is conducted upward along the cabinet 01 in view of the metal structure of the cabinet 01. Therefore, in this embodiment, the heat dissipation efficiency of the power supply 02 can be effectively improved by providing the power supply 02 at the top end in the cabinet 01. In order to further improve heat dissipation, as shown in fig. 2, a heat dissipation hole 07 may be provided at a position corresponding to the power supply 02 on the rear side of the cabinet 01. Further, considering that the signal collection cabinet may be installed outdoors, in order to prevent rainwater from entering the cabinet body 01 through the heat dissipation holes, the angle of the heat dissipation holes 07 with respect to the ground plane may be-60 °, and the vertical distance between the heat dissipation holes 07 is smaller than the thickness of the rear wall of the signal collection cabinet

And (4) doubling. As shown in fig. 3, assuming that the limit angle of rain fall is 0 °, in order to avoid rain entering the cabinet 01, the vertical spacing s of the heat dissipation holes 07 should satisfy the formula (1),

wherein d is the thickness of the rear wall of the cabinet 01. Namely, it is

The relay switch 04 can be used for being connected with electrical equipment, and a worker can turn on or off the electrical equipment through the relay switch 04, so that field operation is facilitated. However, when the worker remotely finds that the electrical equipment has a fault, the worker cannot go to the site in time. Therefore, in an embodiment of the present invention, the relay switch 04 may be connected to the communication device 03 for receiving an external control signal to close or open through the communication device 03.

In this embodiment, to facilitate the adaptation of the signal line type of the SF65 gas densitometer, the signal line interface 05 may include an RS485 interface and an analog quantity interface.

In addition, it is considered that the metal structure of the cabinet 01 may cause signal shielding, so that the wireless signal of the communication device 03 is shielded. Therefore, in one embodiment of the present invention, the communication device 03 may include a wireless antenna and a switch. The switch can set up in the cabinet body 01, and wireless antenna can set up in the cabinet is external with switch wired connection.

On the other hand, consider that generally be provided with a plurality of signal acquisition screen cabinets at the scene, if all set up wireless antenna to every signal acquisition screen cabinet, then can lead to each wireless antenna to influence each other on the one hand, another utility model, because the wireless data transceiver function that signal acquisition screen cabinet was carried out is simply sending detection data and receiving control command, the channel that its own was taken is less, if set up wireless antenna respectively will cause the waste to communication resource. Therefore, the utility model discloses still provide a signal acquisition system for SF6 gas densimeter. The structural block diagram of the signal acquisition system is shown in fig. 4. In fig. 4, the signal acquisition system may include a plurality of signal acquisition cabinets 10 and wireless transceivers 20 as described in any of the above. The wireless transceiver 20 may be connected to the communication device 03 of each signal acquisition cabinet 10.

In yet another aspect, the present invention also provides a monitoring system, which may include a signal acquisition system as described above and a plurality of SF6 gas densitometers. Each SF6 gas density meter can be arranged in the electrical equipment of the substation, is connected with a signal line interface of the signal acquisition system, and is used for acquiring the SF6 gas density of the electrical equipment in real time.

The above describes in detail optional embodiments of the present invention with reference to the accompanying drawings, however, the embodiments of the present invention are not limited to the details of the above embodiments, and the technical concept of the embodiments of the present invention can be within the scope of the present invention, and can be modified in a variety of ways, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not separately describe various possible combinations.

In addition, various different embodiments of the present invention can be combined arbitrarily, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the embodiments do not depart from the spirit of the embodiments of the present invention.

Claims

1. A signal acquisition cabinet for an SF6 gas densitometer, the signal acquisition cabinet comprising:

a cabinet body;

the power supply is arranged at the top end in the cabinet body;

the relay switch is arranged at the bottom of the communication device in the cabinet body and is used for being connected with a power supply of the electrical equipment corresponding to the SF6 gas density meter;

the signal line interface is arranged at the bottom of the relay switch in the cabinet body and comprises three vertically arranged arrays, each array comprises a plurality of signal line interfaces which are arranged in a stacked mode, and the signal line interfaces are used for being connected with the SF6 gas densimeter and the communication device; and

2. The signal acquisition screen cabinet according to claim 1, wherein heat dissipation holes are formed in the back of the cabinet body at positions corresponding to the power supply.

3. The signal acquisition cubicle of claim 1, wherein said relay is connected to said communication device for receiving an external control signal through said communication device to close or open.

4. The signal acquisition screen cabinet of claim 1, wherein the signal line interface comprises an RS485 interface and an analog interface.

5. The signal acquisition screen cabinet of claim 1, wherein the communication device comprises a wireless antenna and a switch, the switch is disposed in the cabinet body, and the wireless antenna is connected to the switch by wire and disposed outside the cabinet body.

6. A signal acquisition system for an SF6 gas densitometer, comprising:

a plurality of signal acquisition cabinets according to any one of claims 1 to 5;

7. A monitoring system, characterized in that the monitoring system comprises:

the signal acquisition system of claim 6;