阅读说明：本技术 用于红外检漏的sf6气体回收装置 (SF6 gas recovery device for infrared leak detection ) 是由 乔胜亚 陈莎莎 杨森 朱晨 邓剑平 李光茂 刘宇 黄柏 朱璐 于 2019-09-25 设计创作，主要内容包括：本发明涉及一种用于红外检漏的SF6气体回收装置,用于安装到红外成像检漏仪的一侧,所述用于红外检漏的SF6气体回收装置包括载座,所述载座包括基板、连接于所述基板一侧的第一侧板、连接于所述基板另一侧的第二侧板、及连接于所述第二侧板顶部的泄漏板；所述泄漏板与所述第二侧板呈倾斜设置；所述泄漏板间隔开设有泄漏孔,所述泄漏孔的延长线与所述第一侧板之间的交点位于所述第一侧板上。上述用于红外检漏的SF6气体回收装置,结构简单,使用方便,载座上倾斜安装泄漏板,以便于红外成像检漏仪检测泄漏孔检测出气体浓度,保证检测结果的精度,同时利用第一侧板挡住气体,便于后续的回收,防止造成污染。(The invention relates to an SF6 gas recovery device for infrared leak detection, which is used for being installed on one side of an infrared imaging leak detector, and comprises a carrier seat, wherein the carrier seat comprises a base plate, a first side plate connected to one side of the base plate, a second side plate connected to the other side of the base plate, and a leakage plate connected to the top of the second side plate; the leakage plate and the second side plate are obliquely arranged; the leakage plate is provided with leakage holes at intervals, and intersection points of extension lines of the leakage holes and the first side plate are located on the first side plate. Above-mentioned SF6 gas recovery unit for infrared leak hunting, simple structure, convenient to use inclines to install the leak board on the carrier seat to be convenient for infrared imaging leak detector detects the leak hole and detects out gas concentration, guarantee the precision of testing result, utilize first curb plate to block gas simultaneously, subsequent recovery of being convenient for prevents to cause the pollution.)

1. An SF6 gas recovery device for infrared leak detection for mounting to one side of an infrared imaging leak detector, characterized in that, the SF6 gas recovery device for infrared leak detection comprises a carrier, the carrier comprises a base plate, a first side plate connected to one side of the base plate, a second side plate connected to the other side of the base plate, and a leakage plate connected to the top of the second side plate; the leakage plate and the second side plate are obliquely arranged; the leakage plate is provided with leakage holes at intervals, and intersection points of extension lines of the leakage holes and the first side plate are located on the first side plate.

2. The SF6 gas recovery device for infrared leak detection as in claim 1, wherein the angle between the leak board and the second side plate is an obtuse angle.

3. The SF6 gas recovery device for infrared leak detection according to claim 1, wherein the level of the outlet end of the leak port is lower than or equal to the level of the ir imaging leak detector.

4. The SF6 gas recovery device for infrared leak detection as defined in claim 1, wherein the carrier further comprises a temperature-regulating plate mounted on an inner surface of the second side plate.

5. SF6 gas recovery unit for infrared leak detection as claimed in claim 4, characterized in that the tuning range of the panel is 0 ℃ -50 ℃.

6. The SF6 gas recovery device for infrared leak detection as defined in claim 1, further comprising a recovery assembly coupled to the carrier; the recovery assembly comprises an air tank and an air pump arranged at the bottom of the air tank; the relative both sides in air pocket are connected respectively the base plate, the air pocket with form between the base plate and hold the chamber.

7. The SF6 gas recovery device for infrared leak detection as defined in claim 6, wherein the gas grooves are arranged in a zigzag pattern.

8. The SF6 gas recovery device for infrared leak detection as defined in claim 6, wherein the base plate is spaced apart to define gas passing holes extending through the plate body of the base plate; the air passing hole is communicated with the containing cavity.

9. The SF6 gas recovery device for infrared leak detection as defined in claim 6, wherein the bottom of the gas tank is provided with a through hole for connecting with a gas inlet of the gas pump.

10. The SF6 gas recovery device for infrared leak detection according to claim 1, wherein the first side panel has a height that is less than a height of the second side panel.

Technical Field

The invention relates to the technical field of electrical testing, in particular to an SF6 gas recovery device for infrared leak detection.

Background

SF6 (sulfur hexafluoride) gas is a stable gas that is colorless, odorless, nontoxic, noncombustible, has a density of about five times that of air, has excellent arc extinguishing and insulating properties and good chemical stability, and thus has been used as an arc extinguishing medium for high-voltage circuit breakers since the end of the 20 th century 50 years. In the ultra-high voltage and extra-high voltage circuit breakers, SF6 has replaced oil as an arc extinguishing medium and has largely replaced compressed air.

With the development of modern science and technology and the attention of people to environmental problems, the greenhouse effect of SF6 is more and more concerned, and SF6 gas is diffused into the air to threaten the physical health of workers, so that the leakage condition of SF6 in electrical equipment must be detected. With the continuous development of modern charged detection technology, the infrared imaging technology can be used for detecting leakage of charged SF6 gas charging equipment in a non-contact and remote manner, and is gradually applied to the leakage detection work of SF6 gas, so that the leakage condition of the electrical equipment can be found visually in real time without power outage, and the SF6 gas leakage source can be accurately judged. In order to facilitate observation of the infrared imaging leak detector, the leakage point of the SF6 gas needs to be exposed in the air, and the SF6 gas released by the leakage point cannot be effectively recovered, so that in order to further solve the problem that the SF6 gas cannot be recovered, the sensitivity evaluation system of the SF6 infrared imaging leak detector and the SF6 infrared imaging leak detector can be considered to be placed in a closed device. However, when the infrared imaging leak detector is used for detecting SF6 gas leakage on site, the infrared imaging leak detector still can visually detect and position the SF6 leakage source and accurately search a leakage point when a certain distance exists between the infrared imaging leak detector and the detected equipment, so that when the sensitivity evaluation system of the SF6 infrared imaging leak detector is used as a trace SF6 leakage source, the detected infrared imaging leak detector should keep a certain distance with a standard source. According to the specification of an accessory 10: SF6 infrared imaging leak detector performance detection technical scheme in a national grid company power equipment live line detector performance detection scheme: a standard leakage source was used, with a flow rate of 0.06ml/min, and the distance of the tested instrument from the standard leakage source was 3m (+ -0.1 m). Therefore, it is inconvenient to place the infrared imaging leak detector and the sensitivity evaluation system together in a single enclosure to maintain the distance between them.

The current general solution is to place the sensitivity evaluation system of the infrared imaging leak detector in the fume hood and use the infrared imaging leak detector to detect the leakage position through the glass of the fume hood. However, glass, film, etc. placed in the path of infrared light causes refraction and reflection of light, resulting in deviation of the detection result from the real situation.

Disclosure of Invention

Based on the above, the SF6 gas recovery device for infrared leak detection is simple in structure and convenient to use, does not affect the precision requirement of infrared leak detection, ensures the precision of a detection result, can effectively recover SF6 gas, and prevents pollution caused by SF6 gas.

In order to realize the purpose of the invention, the invention adopts the following technical scheme:

an SF6 gas recovery unit for infrared leak detection for mounting to one side of an infrared imaging leak detector, the SF6 gas recovery unit for infrared leak detection comprising a carrier, the carrier comprising a base plate, a first side plate connected to one side of the base plate, a second side plate connected to the other side of the base plate, and a leak plate connected to the top of the second side plate; the leakage plate and the second side plate are obliquely arranged; the leakage plate is provided with leakage holes at intervals, and intersection points of extension lines of the leakage holes and the first side plate are located on the first side plate.

Above-mentioned SF6 gas recovery unit for infrared leak hunting, simple structure, convenient to use inclines to install the leak board on the carrier seat to be convenient for infrared imaging leak detector detects the leak hole and detects out gas concentration, guarantee the precision of testing result, utilize first curb plate to block gas simultaneously, subsequent recovery of being convenient for prevents to cause the pollution.

In one embodiment, the angle between the leakage plate and the second side plate is an obtuse angle.

In one embodiment, the level of the gas outlet end of the leakage port is lower than or equal to the level of the infrared imaging leak detector.

In one embodiment, the carriage further comprises a temperature-adjusting plate mounted on the inner surface of the second side plate.

In one embodiment, the temperature adjusting plate is adjusted in the range of 0-50 ℃.

In one embodiment, the SF6 gas recovery device for infrared leak detection further comprises a recovery component connected with the carrier seat; the recovery assembly comprises an air tank and an air pump arranged at the bottom of the air tank; the relative both sides in air pocket are connected respectively the base plate, the air pocket with form between the base plate and hold the chamber.

In one embodiment, the air groove is arranged in a concave shape.

In one embodiment, the base plate is provided with air passing holes at intervals, and the air passing holes penetrate through the plate body of the base plate; the air passing hole is communicated with the containing cavity.

In one embodiment, the bottom of the air groove is provided with a through hole, and the through hole is used for connecting an air inlet of the air pump.

In one embodiment, the height of the first side panel is less than the height of the second side panel.

Drawings

Fig. 1 is a schematic perspective view of an SF6 gas recovery apparatus for infrared leak detection in accordance with an embodiment of the present invention;

FIG. 2 is an exploded schematic view of the SF6 gas recovery unit for infrared leak detection shown in FIG. 1;

fig. 3 is a schematic diagram of the detection principle of the SF6 gas recovery device for infrared leak detection shown in fig. 1.

Reference is made to the accompanying drawings in which:

10-carrier seat, 11-base plate, 110-air passing hole, 12-first side plate, 13-second side plate, 14-leakage plate, 140-leakage hole and 15-temperature adjusting plate;

20-recovery component, 21-air groove, 22-air pump, 23-containing cavity and 24-through hole;

30-infrared imaging leak detector.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1-3, an SF6 gas recovery device for infrared leak detection according to one embodiment of the present invention is shown for mounting to one side of an infrared imaging leak detector 30. The SF6 gas recovery device for infrared leak detection comprises a carrier seat 10 and a recovery assembly 20 connected to the bottom of the carrier seat 10.

The carrier 10 includes a base plate 11, a first side plate 12 connected to one side of the base plate 11, a second side plate 13 connected to the other side of the base plate 11, and a leakage plate 14 connected to the top of the second side plate 13. In the embodiment, the substrate 11 is provided with a plurality of air holes 110 at regular intervals, and the air holes 110 penetrate through the plate body of the substrate 11, so that the top space and the bottom space of the substrate 11 are communicated. The leakage plate 14 is provided with leakage holes 140 at intervals, and the leakage holes 140 are used for allowing the SF6 gas to uniformly and stably escape.

The height of the first side plate 12 is less than that of the second side plate 13, the second side plate 13 and the leakage plate 14 are arranged in an inclined manner, and further, an angle formed between the second side plate 13 and the leakage plate 14 is an obtuse angle. Specifically, as shown in fig. 3, an intersection point between an extension line of the leakage hole 140 and the first side plate 12 is located on the first side plate 12, that is, the SF6 gas escaping from the leakage hole 140 is blocked by the first side plate 12. Because the density of SF6 gas is greater than the air, SF6 gas sinks after being blocked by first curb plate 12, is retrieved by recovery subassembly 20 again, can effectively prevent SF6 gas leakage to the atmosphere, improves the security.

Since the SF6 gas is released from the gas outlet end of the leakage hole 140 and diffused to the periphery, the farther away from the leakage hole 140, the lower the concentration, the SF6 gas concentration at the gas outlet end of the leakage hole 140 is the concentration set by actual simulation, and the SF6 gas concentration at the gas outlet end away from the leakage hole 140 is lower than the simulation value. Therefore, when the leak hole 140 cannot be observed by the infrared imaging leak detector 30, the infrared imaging leak detector 30 cannot detect SF6 gas actually simulating a concentration value, and the detection result is unreliable, so that an obtuse angle is required between the second side plate 13 and the leak plate 14, and further, the horizontal plane of the gas outlet end of the leak hole 140 is lower than or equal to the horizontal plane of the infrared imaging leak detector 30, so as to better detect the gas outlet end of the leak hole 140.

Still further, the carrier 10 further includes a temperature adjustment plate 15 mounted on the inner surface of the second side plate 13 for adjusting the temperature at the air outlet end of the leakage hole 140, and specifically, in the present embodiment, the adjustment range of the temperature adjustment plate 15 is 0 ℃ to 50 ℃.

The recovery assembly 20 comprises an air tank 21 and an air pump 22 arranged at the bottom of the air tank 21; the air pump 22 is connected to the recovery tank to store the leaked SF6 gas in the recovery tank. In this embodiment, the air groove 21 is substantially in a shape of a Chinese character 'ao', two opposite sides of the air groove 21 are respectively connected to the substrate 11, an accommodating cavity 23 is formed between the air groove 21 and the substrate 11, and the gas passing hole 110 is communicated with the accommodating cavity 23, so that the leaked SF6 gas passes through the gas passing hole 110 and is deposited in the accommodating cavity 23. Further, in the present embodiment, the bottom of the air tank 21 is opened with a through hole 24, the through hole 24 is used for connecting to an air inlet of the air pump 22, and the air pump 22 is activated to deliver the SF6 gas deposited in the accommodating cavity 23 to the recovery container.

Above-mentioned SF6 gas recovery unit for infrared leak hunting, simple structure, convenient to use inclines installation leak board 14 on carrier seat 10 to infrared imaging leak detector 30 detects leak hole 140 and detects SF6 gas concentration, guarantees the precision of testing result, utilizes first curb plate 12 to block SF6 gas simultaneously, and subsequent recovery of being convenient for prevents that SF6 from causing the pollution.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.