CN204142264U - Anti-lightning strike sensor - Google Patents

Abstract

The utility model discloses a lightning protection sensor, which comprises a sensor shell, a sensor core unit and a connector. The connector includes a connector housing and a pin fixed in the connector housing through a sealing member. The insulating protective cover, the connector is a reinforced insulation connector, the insulating protective cover is set in the sensor shell, the sensor core unit is set in the insulating protective cover and completely wrapped by the insulating protective cover, and the sensor core unit is set on the upper end of the insulating protective cover. Some through holes are connected with pins in the connector housing. The utility model greatly improves the insulation capacity between the shell and the core sensor unit without changing the volume of the sensor. When the assembly cannot provide effective grounding (such as high-altitude installation), the utility model can effectively protect the sensor itself from being damaged by lightning.

Description

Lightning protection sensor

technical field

The utility model relates to the technical field of sensors, in particular to a lightning protection sensor comprising a sensor shell, a sensor core unit and a connector.

Background technique

Sensors have a wide range of applications and complex installation environments. In applications that require high reliability and harsh site environments, the sensor needs to have self-protection and the ability to resist surge and lightning strikes.

The traditional lightning protection sensor protection method is to incorporate energy discharge devices such as gas discharge tubes, pressure sensitive elements or TVS between the grounding point and the sensor connection line to protect the sensor circuit from damage. However, when the mounting body of the sensor cannot be effectively grounded, the lightning strike energy discharge circuit is blocked, and the protection capability is obviously reduced. On high-voltage power towers, high-rise buildings, bridges, wind turbines and other facilities, the traditional lightning protection effect is significantly reduced.

Contents of the invention

The utility model solves the above problems by adopting the method of insulation and isolation, so that the lightning strike energy can only be discharged through the sensor shell, and cannot be introduced into the sensor to damage the circuit. When the shell cannot be effectively grounded, the lightning strike resistance effect can be maintained.

The technical scheme adopted by the utility model to solve its technical problems is as follows: a lightning protection sensor, including a sensor shell, a sensor core unit and a connector, the connector includes a connector shell and is fixed to the connector shell through a seal The pin in the body is characterized in that the lightning protection sensor also includes an insulating protective cover, the connector is a reinforced insulation connector, the insulating protective cover is set in the sensor shell, and the sensor core unit is set in the insulating protective cover. The inside of the sleeve is completely wrapped by the insulating protective sleeve, and the core unit of the sensor is connected to the pin in the connector housing through the through hole provided on the upper end of the insulating protective sleeve.

According to the above structure, the material of the insulating protective sheath is one or a combination of ceramics, glass and plastics.

According to the above structure, the insulating protective sheath is integrally formed or assembled from multiple parts.

According to the above structure, an insulating sheet is arranged inside the insulating protective sheath.

According to the above structure, the inner wall of the connector is provided with a first insulating ring.

According to the above structure, the second insulating ring is provided at the lower end of the connector.

According to the above structure, preferably, further, the thickness of the insulating protective sheath is 0.1-5 mm.

According to the above structure, preferably, further, the diameter of the through hole on the insulating protective sheath is 0.2-5 mm.

According to the above structure, the sealing member is made of glass or ceramics.

According to the utility model with the above structure, its beneficial effect is that the housing of the utility model is isolated from the core unit of the sensor, and the high-voltage electric pulse induced on the housing cannot invade the core unit of the sensor. The reinforced insulation type connector adopts a three-dimensional insulator structure without changing the size of the connector, which improves the insulation capacity between the connecting pin and the shell.

The utility model greatly improves the insulation capacity between the shell and the core sensor unit without changing the volume of the sensor. When the assembly cannot provide effective grounding (such as high-altitude installation), the utility model can effectively protect the sensor itself from being damaged by lightning.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Fig. 1 is the exploded view of structure of the utility model;

Fig. 2 is the main view structural diagram of the utility model;

Fig. 3 is a sectional view of Fig. 2A-A;

Fig. 4 is the front structural diagram of the insulating protective sleeve of the present invention;

Fig. 5 is a cross-sectional view of Fig. 4B-B;

Fig. 6 is a cross-sectional view of the structure of the connector of the present invention.

Detailed ways

As shown in FIGS. 1-6 , a lightning protection sensor includes a sensor housing 1 , an insulating protective cover 2 , a sensor core unit 3 and a reinforced insulation connector 4 .

In this example, the insulating protective sheath 2 is composed of two parts, as shown in FIG. 5 . It consists of a sleeve 2.1 with a through hole at the top of the upper end and an insulating sheet 2.2. The sensor core unit 3 is fixed in the sleeve 2.1, and the insulating sheet 2.2 is fixed on the top of the sensor core unit 3 . After assembly, the insulating protective sheath 2 and the sensor core unit 3 become a whole. The breakdown between the sensor core unit 3 and the sensor housing 1 is effectively prevented.

The reinforced insulation connector 4 is located on the top of the lightning protection sensor, and is fixed with the sensor housing 1, as shown in FIG. 3 . Reinforced insulation type connectors include connector housing 4.1, pins 4.2 fixed in the connector housing by glass or ceramic seals 4.4, first insulating ring 4.3 provided on the inner wall of the connector and a second insulating ring at the lower end of the connector. Insulation ring 4.5. The first insulating ring 4.3 and the second insulating ring 4.5 are used to increase the creepage distance between the pin and the connector. The heights of the first insulating ring 4.3 and the second insulating ring 4.5 are adjusted according to the lightning protection level, and insulating rings with different heights are all protected by the present invention.

The sensor core unit 3 is set in the insulating protective cover 2 and is completely wrapped by the insulating protective cover 2. The sensor core unit 3 is connected to the pin in the connector housing through the through hole (which can pass through the connecting wire) provided on the upper end of the insulating protective cover 2. 4.2 Connections.

The insulating protective sheath 2 is made of high-voltage resistant insulating material, and the specific material can be selected as one or a combination of ceramics, glass and plastics. The insulating protective sheath 2 is integrally formed or assembled from multiple parts. The assembly method can be bonding, riveting, sintering or threaded socket.

The insulating protective sheath 2 has a thickness of 0.1-5 mm. The diameter of the through hole on the insulating protective sheath 2 is 0.2-5 mm.

The above is an example of the utility model, and is not intended to limit the utility model.

Claims (9)

1. A lightning protection sensor, comprising a sensor housing, a sensor core unit and a connector, the connector comprising a connector housing and a pin fixed in the connector housing through a seal, characterized in that the lightning protection sensor is also Including an insulating protective cover, the connector is a reinforced insulation connector, the insulating protective cover is set in the sensor shell, the sensor core unit is set in the insulating protective cover and completely wrapped by the insulating protective cover, the sensor core The unit is connected with the pins in the connector shell through the through hole provided on the upper end of the insulating protective cover. 2. The anti-lightning sensor according to claim 1, wherein the material of the insulating protective sheath is one or a combination of ceramics, glass and plastics. 3. The anti-lightning sensor according to claim 1 or 2, characterized in that, the insulating protective sheath is integrally formed or assembled from multiple parts. 4. The anti-lightning sensor according to claim 1 or 2, characterized in that an insulating sheet is arranged inside the insulating protective sheath. 5. The anti-lightning sensor according to claim 1, wherein a first insulating ring is provided on the inner wall of the connector. 6. The anti-lightning sensor according to claim 1, wherein a second insulating ring is provided at the lower end of the connector. 7. The lightning protection sensor according to claim 1 or 2, characterized in that, the thickness of the insulating protective sheath is 0.1-5 mm. 8. The anti-lightning sensor according to claim 1, characterized in that, the diameter of the through hole on the insulating protective sheath is 0.2-5 mm. 9. The anti-lightning sensor according to claim 1, wherein the material of the sealing member is glass or ceramics.