阅读说明：本技术 一种用于鼓型滤网电位测量的装置 (Device for measuring potential of drum-shaped filter screen ) 是由 张维 边春华 吴剑 查卫华 陈景荣 朱昌荣 杨琪震 文杰 余小燕 富敏 于 2019-11-14 设计创作，主要内容包括：本发明涉及腐蚀保护技术领域,具体公开了一种用于鼓型滤网电位测量的装置。一种用于鼓型滤网电位测量装置,该装置包括电位检测仪、参比电极装置、电刷探头以及伸缩杆,其中,参比电极装置通过参比电极导线连接在伸缩杆的前端,所述的参比电极装置固定在伸缩杆末端；所述的电刷探头通过电刷探头导线与电位检测仪相连接,使参比电极装置、电刷探头以及电位检测仪形成回路。本发明所述的鼓型滤网电位测量装置能够实现鼓型滤网保护电位的定期方便测量,利用参比电极装置与伸缩杆的磁性连接方式,可以保护电位检测仪及人员安全,利用参比电极装置中的气囊,能够方便回收以外脱落的参比电极装置。(The invention relates to the technical field of corrosion protection, and particularly discloses a device for measuring the potential of a drum-shaped filter screen. A potential measuring device for a drum-shaped filter screen comprises a potential detector, a reference electrode device, an electric brush probe and a telescopic rod, wherein the reference electrode device is connected to the front end of the telescopic rod through a reference electrode lead, and is fixed at the tail end of the telescopic rod; the electric brush probe is connected with the potential detector through an electric brush probe lead, so that the reference electrode device, the electric brush probe and the potential detector form a loop. The drum-shaped filter screen potential measuring device can realize the regular and convenient measurement of the protective potential of the drum-shaped filter screen, can protect the potential detector and personnel safety by utilizing the magnetic connection mode of the reference electrode device and the telescopic rod, and can conveniently recover the reference electrode device which falls off except the reference electrode device by utilizing the air bag in the reference electrode device.)

1. The utility model provides a be used for drum type filter screen potential measuring device which characterized in that: the device comprises a potential detector (1), a reference electrode device (2), an electric brush probe (3) and a telescopic rod (4), wherein the reference electrode device (2) is connected to the front end of the telescopic rod (4) through a reference electrode lead (6), and the reference electrode device (2) is fixed at the tail end of the telescopic rod (4); the electric brush probe (3) is connected with the potential detector (1) through an electric brush probe lead (5), so that the reference electrode device (2), the electric brush probe (3) and the potential detector (1) form a loop.

2. A potential measuring device for a drum type screen according to claim 1, wherein: the reference electrode device (2) comprises a reference electrode (15), a camera (16), a battery chamber (18), a lead chamber (19) and a shell (21), wherein the reference electrode (15) and the camera (16) are arranged in the shell (21), the battery chamber (18) and the lead chamber (19) are arranged in the shell (21), and equipment in the shell (21) is sealed; and a coiling machine is arranged in the wire bin (19) and can be used for coiling and uncoiling the reference electrode wire (6).

3. A potential measuring device for a drum type screen according to claim 2, wherein: a length sensor is arranged in a wire winder in the wire bin (19), and the length sensor can feed back the depth parameter of the reference electrode device (2) which is put down to the potential detector (1).

4. A potential measuring device for a drum type screen according to claim 2, wherein: the rubber ring (17) and the reference electrode (15) are sleeved with the rubber ring (17) and are sealed and fixed at the lower end of the shell (21) side by side; the wire chamber (19) and the battery chamber (18) are arranged in the shell (21) up and down; and the battery in the battery bin (18) supplies power for the camera (16) and the wire winder in the wire bin (19).

5. A potential measuring device for a drum type screen according to claim 1, wherein: the potential detector (1) comprises a display screen, and the display screen can display an image of the environment where the reference electrode device (2) is located and the information of the laying-down depth of the reference electrode device (2); potential detector (1) support at the end of telescopic link (4) through buckle (13), buckle (13) be connected with the metal contact (22) contact that sets up on telescopic link (4), can make reference electrode device (2), potential detector (1) and brush probe (3) form the return circuit.

6. A potential measuring device for a drum type screen according to claim 1, wherein: the electric brush probe (3) comprises a probe (10), a probe bracket (11) and metal elastic pressing sheets (12), wherein the probe (10) is fixed inside the shell-shaped probe bracket (11) through the metal elastic pressing sheets (12) which are circumferentially arranged.

7. A potential measuring device for a drum type screen according to claim 6, wherein: the probe (10) is made of a copper-graphite composite material, and the content of copper in the brush probe is between 20 and 40 percent; the probe bracket (11) is made of an insulating material.

8. A potential measuring device for a drum type screen according to claim 2, wherein: the reference electrode device (2) still include gasbag (20), gasbag (20) install on shell (21) outer wall reference electrode wire (6) with telescopic link (4) when breaking, gasbag (20) in the reference electrode device (2) are automatic to be opened, simultaneously, reference electrode wire (6) can be retrieved automatically to the book line machine in wire storehouse (19) to make reference electrode device (2) float on the surface of water.

9. A potential measuring device for a drum type screen according to claim 1, wherein: the connection between the end part of the reference electrode lead (6) and the front end of the telescopic rod (4) utilizes the connection mode of a magnetic connection (8), and the reference electrode lead can be automatically separated under the action of external force; the end part of the electric brush probe lead (5) connected with the potential detector (1) is in a plug structure, and is connected with the potential detector (1) through a jack type connection (7).

10. A potential measuring device for a drum type screen according to claim 1, wherein: the telescopic rod (4) is further provided with a support (14), the telescopic rod (4) can be conveniently placed by the support (14), the length of the telescopic rod extending into the drum net is limited, and the telescopic rod (4) is prevented from being clamped by the drum net.

Technical Field

The invention belongs to the technical field of corrosion protection, and particularly relates to a device for measuring the potential of a drum-shaped filter screen.

Background

The drum-shaped rotary filter screen of the nuclear power plant has the function of removing fine impurities in seawater to ensure the normal operation of subsequent equipment, and whether the drum-shaped rotary filter screen can normally operate has great influence on the power plant. The drum net of the power plant is in seawater with strong corrosiveness for a long time, so that a sacrificial anode is arranged on the drum net to protect the drum net and slow down corrosion. The standard for cathodic protection requires that the equipment should periodically measure whether its protective potential meets the requirements after the sacrificial anode is installed. The protective potential is measured at least every 0.5a in the initial (1 a-2a after installation) and final (near the design life 2a-3a) and every 1a for the rest of the protective period. At present, the protection potential is mostly measured by a static device, and a protection potential measuring device and a method aiming at a rotating device such as a drum-type rotary filter screen are not available, so that a protection potential measuring device and a method aiming at a rotating device such as a drum-type rotary filter screen are needed to be developed.

Disclosure of Invention

The invention aims to provide a device for measuring the potential of a drum-shaped filter screen, which realizes the periodic measurement of the protection potential of the drum-shaped filter screen.

The technical scheme of the invention is as follows: a potential measuring device for a drum-shaped filter screen comprises a potential detector, a reference electrode device, an electric brush probe and a telescopic rod, wherein the reference electrode device is connected to the front end of the telescopic rod through a reference electrode lead, and is fixed at the tail end of the telescopic rod; the electric brush probe is connected with the potential detector through an electric brush probe lead, so that the reference electrode device, the electric brush probe and the potential detector form a loop.

The reference electrode device comprises a reference electrode, a camera, a battery bin, a lead bin and a shell, wherein the reference electrode and the camera are arranged in the shell, the battery bin and the lead bin are arranged in the shell, and equipment in the shell is sealed; and a coiling machine is arranged in the lead bin and can be used for coiling and uncoiling the reference electrode lead.

A length sensor is arranged in a wire winder in the wire bin, and the depth parameter of the reference electrode device can be fed back to the potential detector by the length sensor.

The rubber rings are sleeved on the rubber ring and the reference electrode and are sealed and fixed at the lower end of the shell side by side; the wire bin and the battery bin are vertically arranged in the shell; and the battery in the battery bin supplies power to the camera and the wire winder in the wire bin.

The potential detector comprises a display screen, wherein the display screen can display an image of the environment where the reference electrode device is located and the information of the laying-down depth of the reference electrode device; the potential detector is supported at the tail end of the telescopic rod through a buckle, the buckle is in contact connection with a metal contact piece arranged on the telescopic rod, and the reference electrode device, the potential detector and the electric brush probe can form a loop.

The electric brush probe comprises a probe, a probe bracket and a metal elastic pressing sheet, wherein the probe is fixed inside the shell-shaped probe bracket through a plurality of metal elastic pressing sheets which are circumferentially arranged.

The probe is made of a copper-graphite composite material, and the copper content omega (Cu) in the brush probe is 20-40%; the probe bracket is made of insulating materials.

The reference electrode device also comprises an air bag, the air bag is arranged on the outer wall of the shell, when the reference electrode lead is disconnected with the telescopic rod, the air bag in the reference electrode device is automatically opened, and meanwhile, the reference electrode lead can be automatically recovered by a winding machine in the lead bin, and the reference electrode device floats on the water surface.

The connection between the end part of the reference electrode wire and the front end of the telescopic rod adopts a magnetic connection mode, and the reference electrode wire can be automatically separated under the action of external force; the end part of the electric brush probe wire connected with the potential detector is of a plug structure, and the electric brush probe wire is connected with the potential detector through a jack type connection.

The telescopic rod is further provided with a support, the telescopic rod can be conveniently placed by the support, the length of the telescopic rod in the drum net is limited, and the telescopic rod is prevented from being clamped by the drum net.

The invention has the following remarkable effects: the drum-shaped filter screen potential measuring device can realize the regular and convenient measurement of the protective potential of the drum-shaped filter screen, can protect the potential detector and personnel safety by utilizing the magnetic connection mode of the reference electrode device and the telescopic rod, and can conveniently recover the reference electrode device which falls off except the reference electrode device by utilizing the air bag in the reference electrode device.

Drawings

FIG. 1 is a schematic structural diagram of a potential measuring device for a drum-type filter according to the present invention;

FIG. 2 is a schematic view of the reference electrode device shown in FIG. 1;

FIG. 3 is a schematic diagram of the brush probe of FIG. 1;

FIG. 4 is an enlarged view of a portion of the female connection of FIG. 1;

FIG. 5 is an enlarged view of a portion of the wire connection of FIG. 1;

FIG. 6 is a rear view of the detachable device of FIG. 1;

FIG. 7 is an enlarged view of a portion of FIG. 6;

FIG. 8 is a schematic view of the structure of the telescopic rod limiting bracket in FIG. 1;

in the figure: 1. a potential detector; 2. a reference electrode arrangement; 3. an electric brush probe; 4. a telescopic rod; 5. a brush probe wire; 6. a reference electrode lead; 7. a jack-type connection; 8. magnetic connection; 9. a telescopic rod limit bracket; 10. a probe; 11. a probe holder; 12. a metal elastic pressing sheet; 13. buckling; 14. a support; 15. a reference electrode; 16. a camera; 17. a rubber ring; 18. a battery compartment; 19. a wire bin; 20. an air bag; 21. a housing; 22. a metal contact.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments.

As shown in fig. 1 to 8, a potential measuring device for a drum-type filter screen comprises a potential detector 1, a reference electrode device 2, an electric brush probe 3 and a telescopic rod 4, wherein the reference electrode device 2 is connected with the front end of the telescopic rod 4 through a reference electrode lead 6, the tail end of the telescopic rod 4 is fixedly provided with the potential detector 1, the potential detector 1 is provided with a display, and the environment and the liquid level condition of the reference electrode device can be fed back to the display by using a camera and a length sensor in the reference electrode device 2; the electric brush probe 3 is connected with the potential detector 1 through an electric brush probe lead 5, wherein the electric brush probe 3 comprises a probe 10, a probe bracket 11 and a metal elastic pressing sheet 12, the outer wall of the probe 10 is fixed inside the shell-shaped probe bracket 11 through a plurality of metal elastic pressing sheets 12 which are circumferentially arranged, the end part of the electric brush probe lead 5 connected with the potential detector 1 is of a plug structure and is connected with the potential detector 1 through a jack type connection 7, wherein the probe 10 is made of a copper-graphite composite material, and the copper content omega (Cu) in the electric brush probe is 20-40%; the probe bracket 11 is made of an insulating material; the rear end of the potential detector 1 is fixed at the tail end of the telescopic rod 4 through a buckle 13, and the buckle is in contact connection with a metal contact piece 22 arranged on the telescopic rod 4, so that the reference electrode device 2, the potential detector 1 and the electric brush probe 3 form a loop and can be used for measurement; the reference electrode device 2 comprises a reference electrode 15, a camera 16, a battery bin 18, a lead bin 19, an air bag 20 and a shell 21, wherein the reference electrode 15 sleeved with a rubber ring 17 and the camera 16 are arranged at the lower end of the shell 21 side by side to realize the sealing property inside the reference electrode device 2; the wire cabin 19 and the battery cabin 18 are sequentially arranged up and down and are installed inside the shell 21, and the air bags 20 are installed on the outer wall of the shell 21 in the circumferential direction, wherein batteries in the battery cabin supply power for the camera 16 and the wire cabin 19, so that a wire winder in the wire cabin 19 can wind and unwind wires, a length sensor is arranged in the wire winder, and the length sensor can feed back to a display screen of the potential detector 1 during paying off and is used for determining the putting-down depth of the reference electrode device 2; the connection between the end of the reference electrode wire 6 and the front end of the telescopic rod utilizes the connection mode of the magnetic connection 8, when the reference electrode wire 6 is subjected to a certain force, the magnetic connection mode can be automatically separated, and the telescopic rod 4 and personnel are prevented from being driven to cause larger damage; when the reference electrode lead 6 is disconnected at the magnetic connection 8, the air bag in the reference electrode device 2 is automatically opened, and meanwhile, the reference electrode lead 6 can be automatically recovered by a wire winder in the lead bin 19, so that the reference electrode device 2 can float on the water surface, the safety of the reference electrode device 2 is ensured, a drum net is prevented from winding the reference electrode, and the reference electrode device 2 is convenient to salvage after falling off; still install a support 14 on telescopic link 4, utilize support 14 can make things convenient for laying of telescopic link 4, the length that the telescopic link stretched into in the drum net is limited simultaneously, prevents that telescopic link 4 from being lived by the drum net card.

When the potential measuring device for the drum-type filter screen is used for measuring the protection potential, the reference electrode falls down through the telescopic rod, the camera is used for shooting pictures, the reference electrode is placed in a corrosion medium where the drum-type filter screen is located, the brush probe is in contact with the tangent plane of the drum-type filter screen, and the potential detector automatically records and stores the protection potential at the position of equipment to be measured.