CN210719576U

CN210719576U - High-sealing-performance lightning arrester monitor

Info

Publication number: CN210719576U
Application number: CN201921474085.1U
Authority: CN
Inventors: 蔡云峰
Original assignee: Hangzhou Yongde Electric Appliances Co ltd
Current assignee: Hangzhou Yongde Electric Appliances Co ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-06-09
Anticipated expiration: 2029-09-05

Abstract

The utility model discloses a lightning arrester monitor of high leakproofness. In order to overcome the problems that the prior art only detects the sealing performance of the arrester, does not strengthen the sealing performance of the arrester, has a complex structure and the like, the utility model adopts the integrally cast arrester and monitor, the joint of the arrester and the monitor is provided with a sealing part, and the sealing part is provided with a through hole for communicating the inside and the outside; a sealing plug, a sealing ring, a first sealing glass, insulating oil and other sealing devices are arranged in the sealing position, and an oil column communicated with the insulating oil is arranged on the monitor; the simple structure of equipment not only can detect equipment's leakproofness, can also strengthen equipment's leakproofness greatly.

Description

High-sealing-performance lightning arrester monitor

Technical Field

The utility model relates to an arrester on-line monitoring field especially relates to an arrester monitor of high leakproofness.

Background

The arrester is widely applied as a protection device in an electric power system, and the on-line monitoring instrument for the arrester is commonly used for monitoring the state of the arrester on line in order to ensure the normal operation of the arrester. However, both the integrated online monitor for the lightning arrester and the split online monitor for the lightning arrester need to be connected with an outgoing line of the lightning arrester, so that the sealing of the lightning arrester is affected; the weakening of the sealing performance of the lightning arrester can cause the increase of dust and dirt in the lightning arrester, and the increase of the humidity in the lightning arrester in rainy days or wet days, thereby influencing the normal work of the lightning arrester.

The existing lightning arrester on-line monitoring instrument has the function of increasing the air pressure test for detecting whether the sealing performance inside the lightning arrester is intact or not, but only detects the sealing performance of the lightning arrester without enhancing the sealing performance of the lightning arrester. For example, an on-line monitor for a lightning arrester, disclosed in chinese patent literature, has a publication number "CN 204044262U", and includes a meter main body, an external hanging lug, a signal input interface and a signal output interface, the meter main body includes a dial and a housing embedded on the surface of the dial, the upper part in the dial is provided with a scale for displaying the number of discharge times, the lower part is provided with two indicator lamps of "live" and "alarm", the middle part is provided with a scale for displaying the value of leakage current and the value of gas pressure, and the lower part of the scale for displaying the value of gas pressure is further provided with two indicator lamps of "normal" and "gas leakage"; the two external hanging lugs are respectively arranged on two sides of the top of the instrument main body; the signal input interface is arranged at the top of the instrument main body; the signal output interface is arranged at the bottom of the instrument main body. The device detects whether the internal sealing performance of the lightning arrester is intact through air pressure detection, but the sealing performance of the lightning arrester is not enhanced; the air pressure detection is added, so that the detection device is more complex and the meter is more numerous.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the problems that the prior art only detects the sealing performance of the arrester, does not strengthen the sealing performance of the arrester, has complex structure and the like; provided is a highly sealed arrester monitor which has a simple structure, can detect the sealing performance of an arrester, and can also enhance the sealing performance.

The above technical problem of the present invention can be solved by the following technical solutions:

the utility model comprises an integrally cast arrester and a monitor, wherein a sealing part is arranged at the joint of the arrester and the monitor, and a through hole for communicating the inside and the outside is arranged in the sealing part; the sealing device is arranged in the sealing position, and an oil column communicated with the through hole is arranged on the monitor. The integrally cast lightning arrester and monitor can effectively reduce gaps generated by connection, greatly reduce the insulation difficulty and only have one sealing position to be sealed. Through multiple sealing device is sealed, has strengthened the leakproofness, multiple guarantee. The sealing performance of the equipment can be observed through the height change of the oil column communicated with the sealing position, if the oil column is obviously reduced, the sealing performance of the equipment is deteriorated, and harmful objects such as dust, moisture and the like can enter. And only one sealing position is arranged, and the sealing structure is simple.

Preferably, the sealing device comprises a sealing plug and a first sealing glass, the sealing plug comprises a main body part and a head part, the main body part of the sealing plug is fixedly arranged in a through hole at the sealing position, and the first sealing glass is arranged on the surface of the through hole and covers the head part of the sealing plug. The sealing position is provided with a through hole for communicating the inside and the outside of the equipment, and the sealing plug is arranged in the hole at the sealing position to block the through hole, so that the inside and the outside are roughly isolated, and the sealing property of the equipment is ensured; the sealing glass is arranged on the surface of the sealing position and covers the head of the sealing plug, so that the isolation between the inside and the outside is further ensured, and the sealing performance of the equipment is enhanced.

Preferably, the plug body is provided with a thread, and the plug is screwed into the through hole at the sealing position. Through threaded connection, strengthened the joint strength of sealing plug with sealed department, avoided the exogenic action to influence insulating nature, used the screw thread, increaseed the area of contact of sealing plug with sealed department, reduced the clearance of sealing plug with sealed department, strengthened the leakproofness.

Preferably, a sealing ring is arranged between the head of the sealing plug and the through hole at the sealing position. The sealing performance of equipment can be effectively improved by increasing the sealing ring, seamless connection between the sealing plug and the sealing position is further ensured, and the sealing performance is enhanced.

Preferably, the first sealing glass and the head of the sealing plug are filled with insulating oil, and the insulating oil is communicated with the oil column. Use the oil blanket, liquid is sealed with other solid cooperations, can occupy the solid gap of remaining, has strengthened the leakproofness, and with oil column intercommunication, makes things convenient for the leakproofness of observation equipment.

Preferably, the monitor is provided with a two-digit numerical table displayed in a rolling manner. Two-digit rolling numbers display lightning stroke times, and the digital display is more visual.

Preferably, the monitor is provided with a pointer type milliammeter, and the milliammeter is connected with an internal circuit of the lightning arrester in series. The pointer type milliammeter is connected into the lightning arrester to measure whether the lightning arrester can be used safely or not, and the state of the lightning arrester is monitored on line. The division is arranged below the scales of the milliammeter and divided into two areas which are distinguished by different marks, so that the areas corresponding to the scales where the pointers are located can be conveniently and visually identified by human eyes, and whether the lightning arrester needs to be replaced or not can be conveniently distinguished.

Preferably, the surface of the oil column is provided with a second sealing glass with scales. The sealing glass with scales is used on the surface, so that the degree of change of the oil column can be sensed more obviously, a user can observe conveniently and record the sealing degree of the equipment, and the sealing degree of the equipment is quantitatively expressed.

The utility model has the advantages that:

1. the sealing plug, the sealing ring, the sealing glass and the insulating oil are matched for sealing, so that the inner space and the outer space are isolated, the sealing performance is enhanced, and multiple guarantees are ensured.

2. The sealing oil column is communicated with the sealing part, and the sealing performance of the equipment can be qualitatively judged according to the height change of the sealing oil column.

3. Only one sealing position is provided, and various sealing devices are used for sealing, so that the sealing structure is simple.

4. The second sealing glass with scales is arranged on the surface of the oil column, so that the sealing degree of the equipment can be quantitatively judged and recorded.

Drawings

Fig. 1 is a side view of an overall structure of the present invention;

fig. 2 is an elevation view of an overall structure of the present invention;

fig. 3 is a cross-sectional view of a seal of the present invention;

fig. 4 is a schematic structural diagram of a sealing part of the present invention.

In the figure, 1, a lightning arrester, 2, a monitor, 3, a sealing part, 4, an oil column, 5, a sealing plug, 6, first sealing glass, 7, a sealing ring, 8, insulating oil, 9, second sealing glass, 10, a digital meter and 11, a milliammeter are arranged.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b):

a lightning arrester monitor with high sealing performance according to the present embodiment, as shown in fig. 1 and 2, includes a lightning arrester 1 and a lightning arrester monitor 2 which are integrally cast. The connection between the arrester 1 and the monitor 2 is provided with only one seal 3. A milliammeter 11 and a two-position rolling display digital meter 10 are arranged on the front surface of the monitor 2, the measuring range of the milliammeter 11 is 0-3mA, wherein the 0-0.5mA interval is displayed by linear scales, and the 0.5-3mA interval is displayed by compression scales; different section marks are arranged below the scales, one type of mark is arranged below the 0.12-0.35mA scale, and the other type of mark is arranged below the 0.35-0.5mA scale section.

The integrated casting of arrester 1 and arrester monitor 2 has reduced sealed degree of difficulty greatly, and only existence needs to be sealed one place, does not connect and the clearance that forms, simple structure, and inside waterproof nature is strong. A two-digit rolling display digital meter 10 is arranged on the monitor 2 and is used for displaying the number of lightning strokes; milliammeter 11 is used for on-line measuring arrester 1's running state, and milliammeter 11 uses pointer milliammeter 11, is provided with different sign areas in the below of scale for the user can learn the state of arrester according to the sign directly perceivedly.

As shown in fig. 4, a through hole is arranged in the sealing part 3, and various sealing devices are arranged in the through hole, wherein the sealing devices comprise a sealing plug 5 and a first sealing glass 6 which is arranged on the surface of the through hole and covers the sealing plug 5; an oil column 4 is arranged in the seal 3, and the oil column 4 is arranged on the monitor 2 through a second seal glass 9 with scales.

The specific structure of the sealing part 3 is shown in fig. 3, and the sealing part 3 comprises a monitor 2 back wall which is vertically arranged, a sealing platform which is horizontally arranged perpendicular to the monitor 2 back wall, and a through hole which is arranged on the sealing platform. A sealing plug 5 with threads is arranged in the through hole, the sealing plug 5 is fixed in the through hole through threaded connection, the sealing plug 5 comprises a head part and a main body part, the threads are arranged on the main body part, and a sealing ring 7 is arranged between the head part and the through hole; a first sealing glass 6 is arranged on the surface of the through hole, and the first sealing glass 6 covers the head part of the sealing plug 5; the space between the first sealing glass 6 and the head of the sealing plug 5 is filled with insulating oil 8; an oil column 4 is arranged on the rear wall of the monitor 2 at the sealing part 3, a second sealing glass 9 with scales is arranged on the surface of the oil column 4 in a sealing mode, and the oil column 4 is communicated with insulating oil 8.

In the sealing platform of the sealing part 3, the connecting strength between the sealing plug 5 and the through hole is enhanced through the threaded sealing plug 5, and the gap between the sealing plug 5 and the through hole is reduced; the sealing performance of the equipment is further enhanced through the sealing ring 7 and the first sealing glass 6; the insulating oil 8 is used for sealing in a solid state and a liquid state, and the gap between solid equipment connections is filled in a liquid state, so that the sealing performance of the equipment is enhanced; the first sealing glass 6 can not only strengthen the sealing performance, but also see the states of the insulating oil 8 and the sealing plug 5 inside through the glass, so that the sealing performance of the equipment is judged preliminarily. The insulating oil 8 is communicated with the oil column 4, and the insulativity of the equipment can be judged through the height change of the oil column 4; the height change of the oil column 4 can be more accurately obtained and recorded through the second sealing glass 9 with the scales, so that the sealing performance of the device can be judged.

By integrally casting the lightning arrester 1 and the monitor 2, the whole equipment only needs to be sealed at one sealing part 3, and the structure is simple; the sealing part 3 is sealed by various solid-liquid different insulating devices such as a sealing plug 5, a sealing ring 7, first sealing glass 6, insulating oil 8 and the like, so that the integrity of the sealing performance is guaranteed in multiple ways; the oil column 4 is arranged on the rear wall of the monitor 2, the oil column 4 is communicated with the insulating oil 8, and the tightness of the equipment can be visually judged according to the height change of the oil column 4; the height change of the oil column 4 can be quantitatively known through the second sealing glass 9 with scales, and judgment and recording are facilitated.

Claims

1. A high-sealing arrester monitor comprises an integrally cast arrester (1) and a monitor (2), and is characterized in that a sealing part (3) is arranged at the joint of the arrester (1) and the monitor (2), and a through hole for communicating the inside and the outside is formed in the sealing part (3); a sealing device is arranged in the sealing part (3), and an oil column (4) communicated with the through hole is arranged on the monitor (2).

2. A high-tightness lightning arrester monitor according to claim 1, characterized in that the sealing device comprises a sealing plug (5) and a first sealing glass (6), the sealing plug (5) comprises a main body part and a head part, the main body part of the sealing plug (5) is fixedly arranged in the through hole of the sealing part (3), and the first sealing glass (6) is arranged on the surface of the through hole and covers the head part of the sealing plug (5).

3. A lightning arrester monitor with high sealing performance according to claim 2, characterized in that the main body of the sealing plug (5) is provided with screw threads, and the sealing plug (5) is in threaded connection with the through hole of the sealing part (3).

4. A lightning arrester monitor with high sealing performance according to claim 2 or 3, characterized in that a sealing ring (7) is arranged between the head of the sealing plug (5) and the through hole of the sealing part (3).

5. A lightning arrester monitor with high sealing performance according to claim 2, characterized in that the head of the first sealing glass (6) and the head of the sealing plug (5) are filled with insulating oil (8), and the insulating oil (8) is communicated with the oil column (4).

6. A lightning arrester monitor with high sealing performance as claimed in claim 1, wherein the monitor (2) is provided with a two-position rolling display digital meter (10).

7. A lightning arrester monitor with high sealing performance according to claim 1, characterized in that the pointer type milliammeter (11) is arranged on the monitor (2), and the milliammeter (11) is connected with the internal circuit of the lightning arrester (1) in series.

8. A high-sealability lightning arrester monitor according to claim 1, wherein the surface of the oil column (4) is provided with a second sealing glass (9) with a scale.