CN216208941U - Ring main unit C4F7N/CO2Mixed gas detection device - Google Patents

Ring main unit C4F7N/CO2Mixed gas detection device Download PDF

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Publication number
CN216208941U
CN216208941U CN202122519936.3U CN202122519936U CN216208941U CN 216208941 U CN216208941 U CN 216208941U CN 202122519936 U CN202122519936 U CN 202122519936U CN 216208941 U CN216208941 U CN 216208941U
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China
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detection device
electromagnetic valve
main unit
ring main
mixed gas
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CN202122519936.3U
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邱欣杰
刘伟
李志兵
叶坦
刘子恩
罗满勤
罗健
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Hunan Changgao Electrical Equipment Co ltd
China Electric Power Research Institute Co Ltd CEPRI
Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd
Xuancheng Power Supply Co of State Grid Anhui Electric Power Co Ltd
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Hunan Changgao Electrical Equipment Co ltd
China Electric Power Research Institute Co Ltd CEPRI
Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd
Xuancheng Power Supply Co of State Grid Anhui Electric Power Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

Ring main unit C4F7N/CO2A mixed gas detection device belongs to the technical field of insulating gas detection of a ring main unit and solves the problem of how to reduce C in a ring main unit gas chamber4F7N/CO2The gas discharge problem during the detection of the mixed gas proportion and the humidity index is solved by adopting a mixing ratio detection device and a micro-water detection device to detect C in the gas chamber4F7N/CO2After the detection of the mixed gas is finished, C4F7N/CO2The mixed gas is firstly stored in the aluminum-based temporary storage bag and then is filled into the ring main unit air chamber through the refilling pipeline C4F7N/CO2The mixed gas can not be directly discharged into the atmosphere, thereby reducing the pollution to the environment and saving C4F7N/CO2The gas is mixed, so that the waste of resources is avoided; the tail gas treatment device is arranged, so that the pollution to the environment is further reduced; the air pump is arranged, and the air pump is started to vacuumize the device before the device is used, so that the influence of moisture and solid particles in the air on a detection result is prevented.

Description

Ring main unit C4F7N/CO2Mixed gas detection device
Technical Field
The utility model belongs to the technical field of ring main unit insulating gas detection, and relates to a ring main unit C4F7N/CO2A mixed gas detection device.
Background
Perfluoroisobutyronitrile (C)4F7N) is used as a novel environment-friendly insulating and arc-extinguishing gas to replace SF6 to be applied to power equipment. It can be mixed with one or several of CO2, N2, O2 and air, and filled into sealed casing of medium-voltage or high-voltage equipment and used in electric components of solid dielectric layer. The perfluoroisobutyronitrile is used in medium-high voltage power equipment and has the following characteristics: the environment-friendly switch has the advantages of friendly environmental characteristics, excellent insulating property, excellent arc extinguishing property, good compatibility with materials in the switch, low toxicity, no flash point, health and safety requirements and adaptability to severe low-temperature environment requirements. Ring main unit adopting C4F7N/CO2Mixed gas replacing SF6The gas has higher environmental protection and engineering value. At the same time, however, perfluoroisobutyronitrile is not environmentally friendly and, if discharged directly into the atmosphere, poses a certain environmental hazard. In the field operation and maintenance, the C in the ring main unit air chamber needs to be regularly checked4F7N/CO2Index such as mist proportion, humidity detects, and prior art carries out the mist sampling and detects the back, and fortune dimension personnel often can directly discharge the sample after detecting to the atmosphere in, cause environmental pollution and waste.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of how to design a ring main unit C4F7N/CO2Mixed gas detector to reduce C in ring main unit gas chamber4F7N/CO2Gas discharge during detection of mixed gas proportion and humidity indexes.
The utility model solves the technical problems through the following technical scheme:
ring main unit C4F7N/CO2Mixed gas detection device includes: the device comprises an air intake (1), a first electromagnetic valve (V1), a mixing ratio detection device (2), a micro water detection device (3), an aluminum-based temporary storage bag (4), a second electromagnetic valve (V2) and a refilling pipeline; the gas taking port (1) is connected with the gas chamber of the ring main unit in a sealing mode, the mixing ratio detection device (2) and the micro-water detection device (3) are arranged in parallel, and the parallel input ends of the mixing ratio detection device (2) and the micro-water detection device (3) are connected with one end of the first electromagnetic valve (V1)Connect, the other end and the air intake (1) of first solenoid valve (V1) pass through sealing connection, mixing ratio detection device (2), the parallel connection output of little water detection device (3) is connected with the input of aluminium base material bag (4) of keeping in, the output of aluminium base material bag (4) of keeping in is connected with the one end sealing connection of second solenoid valve (V2), the other end and the input sealing connection who recharges the pipeline of second solenoid valve (V2), the output sealing connection who recharges the pipeline is between air intake (1) and first solenoid valve (V1).
The device adopts a mixing ratio detection device (2) and a micro-water detection device (3) to detect C in the air chamber4F7N/CO2After the detection of the mixed gas is finished, C4F7N/CO2The mixed gas is temporarily stored in the temporary storage bag (4) made of aluminum base material, and then is filled into the ring main unit air chamber through the refilling pipeline C4F7N/CO2The mixed gas can not be directly discharged into the atmosphere, the pollution to the environment is reduced, the environment is protected, and C is saved4F7N/CO2The mixed gas avoids the waste of resources.
As a further improvement of the technical solution of the present invention, the refill line comprises: a diaphragm pump (6), a one-way valve (7) and a fifth electromagnetic valve (V5); the input and the second solenoid valve (V2) sealing connection of diaphragm pump (6), the output of diaphragm pump (6) and the input sealing connection of check valve (7), the output of check valve (7) and the one end sealing connection of fifth solenoid valve (V5), the other end sealing connection of fifth solenoid valve (V5) is between getting gas port (1) and first solenoid valve (V1).
As a further improvement of the technical scheme of the utility model, the method further comprises the following steps: and the input end of the tail gas treatment device is hermetically connected between the second electromagnetic valve (V2) and the diaphragm pump (6).
As a further improvement of the technical solution of the present invention, the tail gas treatment device comprises: a fourth electromagnetic valve (V4) and an adsorption tower (9); one end of the fourth electromagnetic valve (V4) is connected between the second electromagnetic valve (V2) and the diaphragm pump (6) in a sealing mode, and the other end of the fourth electromagnetic valve (V4) is connected with the input end of the adsorption tower (9) in a sealing mode.
As a further improvement of the technical scheme of the utility model, the method further comprises the following steps: the input end of the air pump (8) is hermetically connected with the fourth electromagnetic valve (V4), and the output end of the air pump (8) is hermetically connected with the input end of the adsorption tower (9).
As a further improvement of the technical scheme of the utility model, the method further comprises the following steps: a first pressure gauge (P1); the first pressure gauge (P1) is arranged between the air intake (1) and the first electromagnetic valve (V1) in a sealing way.
As a further improvement of the technical scheme of the utility model, the method further comprises the following steps: a spare air storage tank (5) and a third electromagnetic valve (V3); the output end of the spare air storage tank (5) is connected with one end of a third electromagnetic valve (V3) in a sealing mode, and the other end of the third electromagnetic valve (V3) is connected between the second electromagnetic valve (V2) and the diaphragm pump (6) in a sealing mode.
As a further improvement of the technical scheme of the utility model, a second pressure gauge (P2) is arranged on the aluminum-based temporary storage bag (4).
The utility model has the advantages that:
(1) the device adopts a mixing ratio detection device (2) and a micro-water detection device (3) to detect C in the air chamber4F7N/CO2After the detection of the mixed gas is finished, C4F7N/CO2The mixed gas is temporarily stored in the temporary storage bag (4) made of aluminum base material, and then is filled into the ring main unit air chamber through the refilling pipeline C4F7N/CO2The mixed gas can not be directly discharged into the atmosphere, the pollution to the environment is reduced, the environment is protected, and C is saved4F7N/CO2The mixed gas avoids the waste of resources.
(2) And a tail gas treatment device is arranged, so that the pollution to the environment is further reduced.
(3) An air pump (8) is arranged, and the air pump (8) is started to vacuumize the device before the device is used, so that the influence of moisture and solid particles in the air on the detection result is prevented.
Drawings
Fig. 1 shows a ring main unit C according to a first embodiment of the present invention4F7N/CO2Structure diagram of the nondestructive testing device for mixed gas.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the utility model is further described by combining the drawings and the specific embodiments in the specification:
example one
As shown in fig. 1, a ring main unit C4F7N/CO2Mixed gas detection device includes: the device comprises an air intake port 1, a mixing ratio detection device 2, a micro-water detection device 3, an aluminum-based material temporary storage bag 4, a spare air storage tank 5, a diaphragm pump 6, a one-way valve 7, an air pump 8, an adsorption tower 9, an exhaust hole 10, a first electromagnetic valve V1, a second electromagnetic valve V2, a third electromagnetic valve V3, a fourth electromagnetic valve V4, a fifth electromagnetic valve V5, a first pressure gauge P1 and a second pressure gauge P2.
The gas taking port 1 is connected with a gas chamber of the ring main unit in a sealing mode, the mixing ratio detection device 2 and the micro-water detection device 3 are arranged in parallel, the parallel input ends of the mixing ratio detection device 2 and the micro-water detection device 3 are connected with one end of a first electromagnetic valve V1, the other end of the first electromagnetic valve V1 is connected with the gas taking port 1 in a sealing mode through a pipeline, a first pressure gauge P1 is arranged on the pipeline between the gas taking port 1 and the first electromagnetic valve V1 in a sealing mode, the parallel output ends of the mixing ratio detection device 2 and the micro-water detection device 3 are connected with the input end of an aluminum-based temporary storage bag 4, the output end of the aluminum-based temporary storage bag 4 is connected with one end of a second electromagnetic valve V2 in a sealing mode, and the other end of the second electromagnetic valve V2 is connected between a fourth electromagnetic valve V4 and a diaphragm pump 6 in a sealing mode; the output end of the spare air storage tank 5 is hermetically connected with one end of a third electromagnetic valve V3, and the other end of the third electromagnetic valve V3 is hermetically connected between a fourth electromagnetic valve V4 and the diaphragm pump 6; one end sealing connection of fifth solenoid valve V5 is between gas intaking mouth 1 and first solenoid valve V1, the other end of fifth solenoid valve V5 and check valve 7's output sealing connection, check valve 7's input and diaphragm pump 6's output sealing connection, diaphragm pump 6's input and fourth solenoid valve V4's one end are connected, fourth solenoid valve V4's the other end and air pump 8's input end sealing connection, air pump 8's output and adsorption tower 9's bottom input are connected, the top output of adsorption tower 9 is provided with gas vent 10.
The working process of the device is as follows:
(1) closing the air intake port 1, opening the first electromagnetic valve V1, the second electromagnetic valve V2, the fourth electromagnetic valve V4 and the fifth electromagnetic valve V5, opening the air pump 8 to vacuumize the device so as to prevent moisture and solid particles in the air from influencing the detection result, and closing all the electromagnetic valves and the air pump 8 after vacuumizing is finished.
(2) Opening the first solenoid valve V1, C4F7N/CO2The mixed gas respectively enters a mixing ratio detection device 2 and a micro-water detection device 3, and C is respectively detected by the mixing ratio detection device 2 and the micro-water detection device 34F7N/CO2Proportion of mixed gas and micro water content. Detect back gaseous aluminium base material bag 4 of keeping in that gets into, when aluminium base material bag 4 manometer P2 registration of keeping in is greater than 100kPa, open second solenoid valve V2, check valve 7, start diaphragm pump 6, C after will detecting4F7N/CO2And the mixed gas is back filled into the ring main unit.
(3) Then the fourth electromagnetic valve V4 is opened, the residual tail gas in the aluminum-based temporary storage bag 4 is input into the adsorption tower 9, and the adsorption tower 9 is filled with adsorbable C4F7Molecular sieve base of N for adsorbing residual C in tail gas4F7And N, the tail gas is prevented from being discharged to the atmosphere, so that the environmental pollution is avoided.
(4) When the first pressure gauge P1 shows C in the ring main unit4F7N/CO2When the pressure of the mixed gas is lower than the rated value, the third electromagnetic valve V3 is opened, the diaphragm pump 6 is started, and C in the spare gas storage tank 5 is filled4F7N/CO2And the mixed gas is filled into the ring main unit to supplement gas to the ring main unit.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (8)

1. Ring main unit C4F7N/CO2The mixed gas detection device is characterized by comprising: the device comprises an air intake (1), a first electromagnetic valve (V1), a mixing ratio detection device (2), a micro water detection device (3), an aluminum-based temporary storage bag (4), a second electromagnetic valve (V2) and a refilling pipeline; get gas port (1) and looped netowrk cabinet's air chamber sealing connection, mixing ratio detection device (2), little water detection device (3) parallelly connected setting, mixing ratio detection device (2), the parallel input of little water detection device (3) is connected with the one end of first solenoid valve (V1), the other end and the gas port (1) of first solenoid valve (V1) pass through sealing connection, mixing ratio detection device (2), the parallel output of little water detection device (3) is connected with the input of aluminium base material bag (4) of keeping in, the output of aluminium base material bag (4) of keeping in is connected with the one end sealing connection of second solenoid valve (V2), the other end and the input sealing connection who recharges the pipeline of second solenoid valve (V2), the output sealing connection who recharges the pipeline is between gas port (1) and first solenoid valve (V1).
2. The ring main unit C of claim 14F7N/CO2The mixed gas detection device is characterized in that the refilling pipeline comprises: a diaphragm pump (6), a one-way valve (7) and a fifth electromagnetic valve (V5); the input end of the diaphragm pump (6) is connected with the second electromagnetic valve (V2) in a sealing way, the output end of the diaphragm pump (6) is connected with the input end of the one-way valve (7) in a sealing way, the output end of the one-way valve (7) is connected with one end of the fifth electromagnetic valve (V5) in a sealing way, and the other end of the fifth electromagnetic valve (V5) is connected between the air intake port (1) and the first electromagnetic valve (V1) in a sealing way。
3. The ring main unit C of claim 24F7N/CO2The mixed gas detection device is characterized by further comprising: and the input end of the tail gas treatment device is hermetically connected between the second electromagnetic valve (V2) and the diaphragm pump (6).
4. The ring main unit C according to claim 34F7N/CO2The mixed gas detection device is characterized in that the tail gas treatment device comprises: a fourth electromagnetic valve (V4) and an adsorption tower (9); one end of the fourth electromagnetic valve (V4) is connected between the second electromagnetic valve (V2) and the diaphragm pump (6) in a sealing mode, and the other end of the fourth electromagnetic valve (V4) is connected with the input end of the adsorption tower (9) in a sealing mode.
5. The ring main unit C of claim 44F7N/CO2The mixed gas detection device is characterized by further comprising: the input end of the air pump (8) is hermetically connected with the fourth electromagnetic valve (V4), and the output end of the air pump (8) is hermetically connected with the input end of the adsorption tower (9).
6. The ring main unit C of claim 14F7N/CO2The mixed gas detection device is characterized by further comprising: a first pressure gauge (P1); the first pressure gauge (P1) is arranged between the air intake (1) and the first electromagnetic valve (V1) in a sealing way.
7. The ring main unit C of claim 24F7N/CO2The mixed gas detection device is characterized by further comprising: a spare air storage tank (5) and a third electromagnetic valve (V3); the output end of the spare air storage tank (5) is connected with one end of a third electromagnetic valve (V3) in a sealing mode, and the other end of the third electromagnetic valve (V3) is connected between the second electromagnetic valve (V2) and the diaphragm pump (6) in a sealing mode.
8. The ring main unit C of claim 14F7N/CO2The mixed gas detection device is characterized in that a second pressure gauge (P2) is arranged on the aluminum-based temporary storage bag (4).
CN202122519936.3U 2021-10-19 2021-10-19 Ring main unit C4F7N/CO2Mixed gas detection device Active CN216208941U (en)

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Application Number Priority Date Filing Date Title
CN202122519936.3U CN216208941U (en) 2021-10-19 2021-10-19 Ring main unit C4F7N/CO2Mixed gas detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122519936.3U CN216208941U (en) 2021-10-19 2021-10-19 Ring main unit C4F7N/CO2Mixed gas detection device

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CN216208941U true CN216208941U (en) 2022-04-05

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