Lightning overvoltage protection device of fan pressure transmitter

Abstract

The utility model discloses a lightning overvoltage protection device of a fan pressure transmitter. The lightning overvoltage protection device comprises a fixing screw, a lightning protection module and a wiring module. The wiring module is installed on one side of the lightning protection module and used for being connected with a ground wire, the lightning protection module is fixedly installed above a fan pressure transmitter through fixing screws, the lightning protection module comprises a shell, a lightning protection plate and inserting pieces, the lightning protection plate and the inserting pieces are installed in the shell, the multiple inserting pieces are installed below the lightning protection plate, and the inserting pieces are connected with the shell. The insertion sheets pass through the housing and are in butt joint with each pin of the fan pressure transmitter. The lightning overvoltage protection device is flexibly and detachably installed and does not need to be installed in the fan in advance, so that the lightning overvoltage protection device is more reasonable in structural design, higher in stability, convenient to install on site and good in lightning protection effect.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning protection for a fan pressure transmitter, in particular to a lightning overvoltage protection device for a fan pressure transmitter. Background Art

[0002] With the increase of lightning strike failures in wind turbines, the lightning protection measures for wind turbine sensors also need to be further enhanced. At present, the existing technology is basically based on the built-in lightning protection circuit of the pressure transmitter, which is not convenient for on-site installation and cannot solve the lightning protection of the liquid pressure sensor inside the wind turbine.

[0003] For example, in Chinese utility model patent CN210638828U, a pressure transmitter circuit is disclosed, which uses a pressure transmitter circuit, and uses the lightning protection circuit to receive the current signal and prevent lightning surges, so that the pressure transmitter can output signals stably.

[0004] Meanwhile, in Chinese utility model patent CN207472490U, a lightning protection type pneumatic pressure transmitter assembly is disclosed, which insulates the pneumatic pressure transmitter from the outside world only from the perspective of external insulation. Utility Model Content

[0005] The utility model aims to solve the deficiencies in the prior art and provides a lightning overvoltage protection device for a fan pressure transmitter, so that its structural design is more reasonable and can better reduce material costs, and it can be flexibly installed on the fan pressure transmitter to prevent the pressure transmitter from being damaged by lightning strikes.

[0006] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a lightning overvoltage protection device for a fan pressure transmitter, comprising a fixing screw, a lightning protection module and a wiring module; the wiring module is installed on one side of the lightning protection module for connecting to the ground wire, the lightning protection module is fixedly installed on the top of the fan pressure transmitter by fixing screws, the lightning protection module comprises a shell, a lightning protection board and a plug-in, the lightning protection board and the plug-in are installed inside the shell, multiple plug-ins are installed below the lightning protection board, and the plug-in passes through the shell and docks with each pin of the fan pressure transmitter.

[0007] Furthermore, the outer shell includes a sealing ring, an upper shell and a lower shell, the sealing ring is arranged between the upper shell and the lower shell, and the sealing ring, the upper shell and the lower shell are detachably connected by self-tapping screws. The upper shell and the lower shell are both provided with installation positions for the fixing screws to pass through, and the lower shell is also provided with a pin docking position for the insert to pass through.

[0008] Furthermore, the wiring module includes a wiring post, a transfer cover, a sealing ring and a nut cover which are connected in sequence; the wiring post is installed on the outside of the housing through a wire nut.

[0009] Furthermore, the shell is an engineering plastic shell.

[0010] Furthermore, the insert is a phosphor copper tin-plated insert.

[0011] Furthermore, the sealing ring is a silicone sealing ring.

[0012] Furthermore, the terminal is a brass nickel-plated terminal.

[0013] Furthermore, the transfer cover is an engineering plastic transfer cover.

[0014] Furthermore, the nut cover is an engineering plastic nut cover.

[0015] A fan comprises the lightning overvoltage protection device of the fan pressure transmitter.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] The lightning overvoltage protection device of the utility model adopts a flexible and detachable installation and does not need to be pre-installed inside the fan, so that its structural design is more reasonable, the stability is higher, and it is convenient for on-site installation, while the lightning protection effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with specific embodiments.

[0020] See also Figure 1 As shown, the lightning overvoltage protection device for the fan pressure transmitter provided in this embodiment includes a fixing screw 1, a lightning protection module and a wiring module;

[0021] The lightning protection module is fixedly installed above the fan pressure transmitter 3 by fixing screws 1. The lightning protection module includes a shell, a lightning protection board 202 and an insert 203. The lightning protection board 202 and the insert 203 are installed inside the shell. Multiple inserts 203 are installed below the lightning protection board 202, and the insert 203 passes through the shell and docks with each pin 301 of the fan pressure transmitter 3.

[0022] The shell includes a sealing ring 2011, an upper shell 2012 and a lower shell 2013, wherein the sealing ring 2011 is arranged between the upper shell 2012 and the lower shell 2013, and the sealing ring 2011, the upper shell 2012 and the lower shell 2013 are detachably connected by self-tapping screws 4, and the upper shell 2012 and the lower shell 2013 are both provided with an installation position a for the fixing screw 1 to pass through, and the lower shell 2013 is also provided with a pin docking position (not shown in the figure) for the insert 203 to pass through.

[0023] The wiring module is installed on one side of the lightning protection module for connecting to the ground wire. The wiring module includes a terminal 5, a transfer cover 6, a sealing ring 7 and a nut cover 8 connected in sequence; the terminal 5 is installed on the outside of the shell through a wire nut 9.

[0024] The housing, adapter cover 6 and nut cover 8 are all made of engineering plastics, the insert 203 is a phosphor copper tin-plated insert, the sealing ring 2011 is a silicone sealing ring, and the terminal 5 is a brass nickel-plated terminal.

[0025] At present, when the fan is running in a lightning environment, the pressure transmitter may be damaged by lightning. Through lightning test verification, the pressure transmitter will be damaged during the test of 10 / 700, 1kV. After adding this device, the pressure transmitter can be tested at 10 / 700, 6kV without damage.

[0026] Example 2

[0027] The wind turbine provided in this embodiment includes the lightning overvoltage protection device for the wind turbine pressure transmitter described in Embodiment 1.

[0028] The embodiments described above are only preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Therefore, all changes made based on the shape and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lightning overvoltage protection device for a fan pressure transmitter, characterized in that: It includes fixing screws, a lightning protection module and a wiring module; the wiring module is installed on one side of the lightning protection module for connecting to the ground wire, the lightning protection module is fixedly installed above the fan pressure transmitter by fixing screws, the lightning protection module includes a shell, a lightning protection board and a plug-in, the lightning protection board and the plug-in are installed inside the shell, multiple plug-ins are installed below the lightning protection board, and the plug-in passes through the shell and docks with each pin of the fan pressure transmitter.

2. The lightning overvoltage protection device for a fan pressure transmitter according to claim 1 is characterized in that: The shell includes a sealing ring, an upper shell and a lower shell, the sealing ring is arranged between the upper shell and the lower shell, and the sealing ring, the upper shell and the lower shell are detachably connected by self-tapping screws. The upper shell and the lower shell are both provided with mounting positions for the fixing screws to pass through, and the lower shell is also provided with a pin docking position for the insert to pass through.

3. The lightning overvoltage protection device for a fan pressure transmitter according to claim 1 is characterized in that: The wiring module comprises a wiring post, a transfer cover, a sealing ring and a nut cover which are connected in sequence; the wiring post is installed on the outer side of the housing through a crimping nut.

4. The lightning overvoltage protection device for a fan pressure transmitter according to claim 1 is characterized in that: The shell is an engineering plastic shell.

5. The lightning overvoltage protection device for a fan pressure transmitter according to claim 1 is characterized in that: The insert is a phosphor copper tin-plated insert.

6. The lightning overvoltage protection device for a fan pressure transmitter according to claim 2, characterized in that: The sealing ring is a silicone sealing ring.

7. The lightning overvoltage protection device for a fan pressure transmitter according to claim 3 is characterized in that: The binding posts are brass nickel-plated binding posts.

8. The lightning overvoltage protection device for a fan pressure transmitter according to claim 3 is characterized in that: The transfer cover is an engineering plastic transfer cover.

9. The lightning overvoltage protection device for a fan pressure transmitter according to claim 3, characterized in that: The nut cover is an engineering plastic nut cover.

10. A fan, characterized in that: A lightning overvoltage protection device for a fan pressure transmitter comprising the device described in any one of claims 1 to 9.

Images