阅读说明：本技术 一种六氟化硫气体重量测量系统和气体称重装置 (Sulfur hexafluoride gas weight measurement system and gas weighing device ) 是由 朱峰 马凤翔 袁小芳 宋玉梅 董王朝 杭忱 徐霄筱 于 2021-07-12 设计创作，主要内容包括：本发明公开了一种六氟化硫气体称重装置,称重气瓶通过支撑弹簧安装在安装座上,称重气瓶外壁的支撑环套通过检测臂插入安装座的检测环上的所述检测槽内,压力传感器设置在所述检测槽内,用于检测检测臂上升所施加的压力；称重气瓶通过检测气口与设备壳体连通,当设备壳体内气体不足时,称重气瓶内的气体流动进入设备壳体内,使称重气瓶内气体质量减少,使得检测臂随称重气瓶在支撑弹簧的弹性支撑下上升,对检测环内的压力传感器施加压力,从而实现通过压力传感器对称重气瓶内气体的重量检测,进而实现对设备壳体内气体重量变化检测。本发明还提出一种六氟化硫气体重量测量系统。(The invention discloses a sulfur hexafluoride gas weighing device, wherein a weighing gas cylinder is arranged on a mounting seat through a supporting spring, a supporting ring sleeve on the outer wall of the weighing gas cylinder is inserted into a detection groove on a detection ring of the mounting seat through a detection arm, and a pressure sensor is arranged in the detection groove and used for detecting the pressure applied by the rising of the detection arm; the gas cylinder of weighing is through detecting gas port and equipment casing intercommunication, and when the equipment casing internal gas was not enough, the gas flow in the gas cylinder of weighing gets into in the equipment casing, makes the interior gas mass of gas cylinder of weighing reduce for the detection arm rises under supporting spring's elastic support along with the gas cylinder of weighing, applys pressure to the pressure sensor who detects the intra-annular, thereby realizes measuring through the weight of the interior gas of pressure sensor weighing gas cylinder, and then realizes detecting the change of gas weight in the equipment casing. The invention further provides a sulfur hexafluoride gas weight measurement system.)

1. A sulfur hexafluoride gas weighing device, comprising: the device comprises a mounting seat (1), a weighing gas cylinder (2), a supporting spring (3) and a first pressure sensor (61);

the top of the mounting seat (1) is provided with an accommodating groove and a supporting part arranged around the accommodating groove, the supporting spring (3) is positioned in the accommodating groove, the supporting part is provided with a detection piece (4), and one side, close to the accommodating groove, of the detection piece (4) is provided with a detection groove;

a first detection gas port is formed in the top of the weighing gas bottle (2), the weighing gas bottle (2) is located above the supporting spring (3), a supporting ring sleeve (5) is arranged on the outer wall of the weighing gas bottle (2), the supporting ring sleeve (5) is located above the mounting seat (1), and a detection arm (51) extending into the detection groove is arranged on the supporting ring sleeve (5);

the first pressure sensor (61) is arranged on the inner wall of the detection groove and is positioned above the detection arm (51).

2. A sulphur hexafluoride gas weighing device according to claim 1, wherein the support portion is provided with a plurality of detection members (4) arranged in an annular configuration, each detection member (4) having a first pressure sensor mounted thereon.

3. A sulphur hexafluoride gas weighing device according to claim 1, wherein the detector member (4) is further provided with a second pressure sensor (62), the second pressure sensor (62) being located below the detector arm (51).

4. A sulphur hexafluoride gas weighing device according to claim 1 or claim 3, characterised in that the weighing cylinder (2) is also provided with an air outlet.

5. A sulphur hexafluoride gas weight measuring system, comprising an equipment housing (20) and a sulphur hexafluoride gas weighing device according to claims 1-4;

be equipped with tonifying qi mouth and second on equipment shell (20) and detect the gas port, the second detect the gas port with first detection gas port passes through the pipeline intercommunication, tonifying qi mouth department is equipped with gulp valve (40).

6. The sulfur hexafluoride gas weight measurement system according to claim 5, further comprising a controller, wherein the controller controls the opening of the gulp valve (40) according to detection signals of the at least two pressure sensors.

7. A sulfur hexafluoride gas weight measuring system as claimed in claim 5, characterised in that a first temperature sensor is provided in the weighing gas cylinder (2) and a second temperature sensor is provided in the equipment housing (20).

8. Sulphur hexafluoride gas weight measurement system according to claim 7, characterised in that a circulating gas inlet is provided in the equipment housing (20), said circulating gas inlet being in communication with the outlet of the weighing cylinder (2) via a line, and that a gas discharge valve (30) and a gas pump (50) are provided in the line between said circulating gas inlet and said outlet.

9. The sulfur hexafluoride gas weight measurement system according to claim 7 or 8, further comprising a controller, wherein the controller controls the operation of the exhaust valve (30), the make-up valve (40) and/or the air pump (50) according to detection signals of the first temperature sensor, the second temperature sensor and the pressure sensor.

10. The sulfur hexafluoride gas weight measuring system as recited in claim 9, wherein the controller controls the air pump (50) to operate when the first pressure sensor (61) does not detect the pressure signal and the second temperature sensor has a detected temperature greater than that of the first temperature sensor;

and/or when the first pressure sensor (61) detects a pressure signal and the detection temperature of the second temperature sensor is less than or equal to the detection temperature of the first temperature sensor, the controller controls the air supplementing valve (40) to supplement air into the equipment shell (20);

and/or when the first pressure sensor (61) detects a pressure signal and the detected temperature of the second temperature sensor is higher than that of the first temperature sensor, the controller controls the air pump (50) to work and controls the air replenishing valve (40) to replenish air into the equipment shell (20).

Technical Field

The invention relates to the technical field of sulfur hexafluoride gas weighing, in particular to a sulfur hexafluoride gas weight measuring system and a gas weighing device.

Background

Sulfur hexafluoride gas (SF6) is an excellent insulating medium and widely used in the power industry, and is one of 6 greenhouse gases which are strictly prohibited to be discharged, and countries in the world prohibit the discharge of the sulfur hexafluoride gas, and national power grid companies can carry out sulfur hexafluoride gas weight statistics on the sulfur hexafluoride gas in operation and strictly control the usage amount and the leakage amount in order to reduce the discharge amount of the sulfur hexafluoride gas. The lower provinces and the electric power companies need to gather the total amount of sulfur hexafluoride gas of the operating transformer substation in the jurisdiction. In order to generally survey the usage amount of sulfur hexafluoride gas in a transformer substation, which is governed by each provincial electric power company, a method for detecting the weight of the sulfur hexafluoride gas in the transformer substation is needed, and the weight of the sulfur hexafluoride gas in operation is convenient to count.

Disclosure of Invention

In order to solve the technical problems in the background art, the invention provides a sulfur hexafluoride gas weight measuring system and a gas weighing device.

The invention provides a sulfur hexafluoride gas weight measurement system and a gas weighing device, which comprise: the device comprises a mounting seat, a weighing gas cylinder, a supporting spring and a first pressure sensor;

the top of the mounting seat is provided with an accommodating groove and a supporting part arranged around the accommodating groove, the supporting spring is positioned in the accommodating groove, the supporting part is provided with a detection piece, and one side of the detection piece, which is close to the accommodating groove, is provided with a detection groove;

the top of the weighing gas bottle is provided with a first detection gas port, the weighing gas bottle is positioned above the supporting spring, the outer wall of the weighing gas bottle is provided with a supporting ring sleeve, the supporting ring sleeve is positioned above the mounting seat, and the supporting ring sleeve is provided with a detection arm extending into the detection groove;

the first pressure sensor is arranged on the inner wall of the detection groove and is positioned above the detection arm.

Preferably, the detection piece is further provided with a second pressure sensor, and the second pressure sensor is located below the detection arm.

Preferably, a plurality of detection pieces are arranged on the supporting part in an annular distribution mode, and each detection piece is provided with a pressure sensor.

Preferably, the weighing gas cylinder is also provided with a gas outlet.

According to the sulfur hexafluoride gas weighing device, the weighing gas cylinder is mounted on the mounting seat through the supporting spring, the supporting ring sleeve on the outer wall of the weighing gas cylinder is inserted into the detection groove on the detection ring of the mounting seat through the detection arm, and the pressure sensor is arranged in the detection groove and used for detecting the pressure applied by the rising of the detection arm. Through the gaseous weighing device of sulfur hexafluoride of above-mentioned optimal design, the gas cylinder of weighing is through detecting gas port and equipment casing intercommunication, when the casing internal gas is not enough, the gaseous flow in the gas cylinder of weighing gets into in the equipment casing, make the gaseous quality in the gas cylinder of weighing reduce, make the detection arm rise under supporting spring's elastic support along with the gas cylinder of weighing, exert pressure to the pressure sensor that detects the intra-annular, thereby realize through the gaseous weight detection of pressure sensor weighing gas cylinder, and then realize detecting the gaseous weight change in the equipment casing.

The invention also provides a sulfur hexafluoride gas weight measuring system, which comprises an equipment shell and the sulfur hexafluoride gas weighing device;

be equipped with tonifying qi mouth and second on the equipment casing and detect the gas port, the second detect the gas port with first detection gas port passes through the pipeline intercommunication, tonifying qi mouth department is equipped with the gulp valve.

Preferably, the air supply valve further comprises a controller, and the controller controls the air supply valve to open according to detection signals of the at least two pressure sensors.

Preferably, a first temperature sensor is arranged in the weighing gas cylinder, and a second temperature sensor is arranged in the equipment shell.

Preferably, a circulating gas inlet is formed in the equipment shell and is communicated with an exhaust port of the weighing gas cylinder through a pipeline, and an exhaust valve and an air pump are arranged on the pipeline between the circulating gas inlet and the exhaust port.

Preferably, the air pump further comprises a controller, and the controller controls the exhaust valve, the air supply valve and/or the air pump to work according to detection signals of the first temperature sensor, the second temperature sensor and the pressure sensor.

Preferably, when the first pressure sensor does not detect the pressure signal and the detected temperature of the second temperature sensor is greater than the detected temperature of the first temperature sensor, the controller controls the air pump to work;

and/or when the first pressure sensor detects a pressure signal and the detection temperature of the second temperature sensor is less than or equal to the detection temperature of the first temperature sensor, the controller controls the air replenishing valve to replenish air into the equipment shell;

and/or when the first pressure sensor detects a pressure signal and the detection temperature of the second temperature sensor is higher than that of the first temperature sensor, the controller controls the air pump to work and controls the air replenishing valve to replenish air into the equipment shell.

The sulfur hexafluoride gas weight measuring system provided by the invention comprises the sulfur hexafluoride gas weighing device, and the weighing device which is externally provided with the weighing gas cylinder communicated with the equipment shell can realize real-time detection of the gas condition in the existing equipment shell under the condition of not influencing the structure of the equipment shell.

Drawings

Fig. 1 is a schematic structural diagram of a sulfur hexafluoride gas weighing device provided by the present invention.

Fig. 2 is a schematic view of a partial structure of a pressure sensor of a sulfur hexafluoride gas weighing device according to the present invention.

Fig. 3 is a schematic structural diagram of a sulfur hexafluoride gas weight measurement system provided in the present invention.

Detailed Description

Fig. 1 to 3 show a schematic structural diagram of a sulfur hexafluoride gas weighing device according to the present invention in fig. 1, fig. 2 shows a schematic structural diagram of a partial structure of a pressure sensor of a sulfur hexafluoride gas weighing device according to the present invention in fig. 2, and fig. 3 shows a schematic structural diagram of a sulfur hexafluoride gas weight measuring system according to the present invention.

Referring to fig. 1 and 2, the invention provides a sulfur hexafluoride gas weight measurement system and a gas weighing device, comprising: the device comprises a mounting seat 1, a weighing gas cylinder 2, a supporting spring 3 and a first pressure sensor 61;

the top of the mounting seat 1 is provided with an accommodating groove and a supporting part arranged around the accommodating groove, the supporting spring 3 is positioned in the accommodating groove, the supporting part is provided with a detection piece 4, and one side, close to the accommodating groove, of the detection piece 4 is provided with a detection groove;

the top of the weighing gas bottle 2 is provided with a first detection gas port, the weighing gas bottle 2 is positioned above the supporting spring 3, the outer wall of the weighing gas bottle 2 is provided with a supporting ring sleeve 5, the supporting ring sleeve 5 is positioned above the mounting seat 1, and the supporting ring sleeve 5 is provided with a detection arm 51 extending into the detection groove;

the first pressure sensor 61 is disposed on the inner wall of the detection tank above the detection arm 51.

According to the sulfur hexafluoride gas weighing device, the weighing gas cylinder is mounted on the mounting seat through the supporting spring, the supporting ring sleeve on the outer wall of the weighing gas cylinder is inserted into the detection groove on the detection ring of the mounting seat through the detection arm, and the pressure sensor is arranged in the detection groove and used for detecting the pressure applied by the rising of the detection arm. Through the gaseous weighing device of sulfur hexafluoride of above-mentioned optimal design, the gas cylinder of weighing is through detecting gas port and equipment casing intercommunication, when the casing internal gas is not enough, the gaseous flow in the gas cylinder of weighing gets into in the equipment casing, make the gaseous quality in the gas cylinder of weighing reduce, make the detection arm rise under supporting spring's elastic support along with the gas cylinder of weighing, exert pressure to the pressure sensor that detects the intra-annular, thereby realize through the gaseous weight detection of pressure sensor weighing gas cylinder, and then realize detecting the gaseous weight change in the equipment casing.

In order to describe the specific operation of the sulfur hexafluoride gas weighing device in this embodiment in detail, referring to fig. 3, a sulfur hexafluoride gas weight measuring system is further provided in this embodiment, including an equipment housing 20 and the sulfur hexafluoride gas weighing device;

be equipped with tonifying qi mouth and second on the equipment casing 20 and detect the gas port, the second detect the gas port with first detection gas port passes through the pipeline intercommunication, tonifying qi mouth department is equipped with tonifying qi valve 40.

In a specific working process, in an initial state, insulating gas is filled into the equipment shell, the insulating gas enters the weighing gas cylinder through the first detection gas port and the second detection gas port, the bottom of the weighing gas cylinder is supported through the supporting spring, when the weight of the weighing gas cylinder after being filled with the gas is equal to the elastic supporting force of the supporting spring, the gas density and the pressure in the weighing gas cylinder are equal to the gas in the equipment shell under the conditions of equal temperature and known volume according to an ideal gas state equation PV (nrT), and therefore the weight of the gas in the equipment shell is deduced through the weight of the gas in the weighing gas cylinder at the moment.

In the use, when the gas in the equipment reduces, the gas in the gas cylinder of weighing flows into in the equipment for the gas weight loss in the gas cylinder of weighing, and at this moment, the weight of the gas cylinder of weighing is less than supporting spring's elastic support power, and the gas cylinder of weighing rises under the effect of elastic support power, and the first pressure sensor of detection arm contact of gas cylinder outer wall triggers pressure sensing signal, shows that the gas reduces in the equipment, needs the tonifying qi.

For traditional weighing sensor, offset the most gravity of gas cylinder of weighing through spring-supported, detect the gas gravity change of gas cylinder of weighing through pressure sensor to improve detectivity.

In a specific design manner, in order to avoid false alarm of the first pressure sensor, a plurality of detection pieces 4 distributed in an annular manner are arranged on the support portion, a first pressure sensor 61 is installed on each detection piece 4, and when the plurality of first pressure sensors 61 detect pressure signals, the detection result is indicated to be true.

In a specific control manner, the present embodiment further includes a controller, and the controller controls the opening of the gulp valve 40 according to the detection signals of the at least two pressure sensors.

Similarly, the second pressure sensor 62 is further arranged on the detection piece 4, the second pressure sensor 62 is located below the detection arm 51, and in the air supply process, when the second pressure sensor 62 acquires a pressure signal of the detection arm, it is indicated that the weight of the weighing air bottle is greater than the elastic supporting force of the supporting spring, and the excess air in the equipment shell is indicated.

Further, the weighing gas cylinder 2 is also provided with a gas outlet through which the detected excessive gas can be discharged.

In the course of the work, the exothermic temperature that makes in the equipment casing of electrical work risees, and temperature variation influences the gas pressure in the equipment casing, and then influences the flow of gas between gas cylinder of weighing and equipment casing, consequently, is equipped with first temperature sensor in the gas cylinder of weighing 2, is equipped with second temperature sensor in the equipment casing 20, is convenient for monitor the gas condition of flowing.

When the first temperature sensor and the second temperature sensor detect that the temperature in the equipment shell is obviously higher than the temperature in the weighing gas cylinder, the uniformity of gas distribution in the two is influenced on the one hand, and meanwhile, the working condition of the internal components can be monitored. At this time, in a specific design mode, a circulating gas inlet is arranged on the equipment shell 20, the circulating gas inlet is communicated with the exhaust port of the weighing gas cylinder 2 through a pipeline, and an exhaust valve 30 and an air pump 50 are arranged on the pipeline between the circulating gas inlet and the exhaust port; through the second detect the gas port with first pipeline between the gas port and pipeline between circulating gas entry and the gas vent form the gas circulation circuit between equipment casing and the gas cylinder of weighing, through discharge valve control circulation circuit's break-make, when the high temperature in the equipment casing, can realize gaseous circulation flow at the circulation circuit between equipment casing and the gas cylinder of weighing through the air pump, when the gas temperature between the balanced the two, effectively for cooling in the equipment casing through gas flow.

Accordingly, in a specific control manner, the controller may control the operation of the exhaust valve 30, the air make-up valve 40 and/or the air pump 50 according to detection signals of the first temperature sensor, the second temperature sensor and the pressure sensor.

Based on the ideal gas state equation, according to the detection temperature of the temperature sensor, the weight of the gas in the equipment shell can be calculated conveniently according to the weight and the temperature of the gas in the weighing gas cylinder. Therefore, in the further control mode, when the first pressure sensor 61 does not detect the pressure signal and the detected temperature of the second temperature sensor is greater than the detected temperature of the first temperature sensor, the controller controls the air pump 50 to operate;

and/or when the first pressure sensor 61 detects a pressure signal and the detected temperature of the second temperature sensor is less than or equal to the detected temperature of the first temperature sensor, the controller controls the air supply valve 40 to supply air into the equipment shell 20;

and/or when the first pressure sensor 61 detects a pressure signal and the second temperature sensor detects a temperature greater than that of the first temperature sensor, the controller controls the air pump 50 to operate and controls the air supplement valve 40 to supplement air into the device shell 20.

In actual design, in order to facilitate the installation of the support ring sleeve on the weighing gas cylinder, the support ring sleeve comprises a first sleeve body and a second sleeve body, the first sleeve body and the second sleeve body are respectively positioned on two sides of the weighing gas cylinder, and the first sleeve body and the second sleeve body are fixed through bolts.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.