CN219715406U

CN219715406U - Gas comprehensive tester

Info

Publication number: CN219715406U
Application number: CN202321079837.0U
Authority: CN
Inventors: 宋金华; 张庆; 蒋进; 吴辉
Original assignee: Changzhou Jiezhuo Intelligent Technology Co ltd
Current assignee: Changzhou Jiezhuo Intelligent Technology Co ltd
Priority date: 2023-05-08
Filing date: 2023-05-08
Publication date: 2023-09-19
Anticipated expiration: 2033-05-08

Abstract

The utility model relates to the technical field of SF6 gas detection, in particular to a comprehensive gas tester. The technical scheme includes that the device comprises a base, a main shell is mounted on the top of the base in a clamping manner, a circuit board is fixedly mounted at the inner bottom of the base, a humidity sensor, an SF6 concentration sensor and a particulate matter sensor are fixedly mounted on the circuit board, a tail gas quantitative cylinder is fixedly mounted at the top end of the main shell, a connecting air tap is fixedly mounted on a top plate of the main shell, and the top end of the connecting air tap is inserted into the tail gas quantitative cylinder; the top of the main shell is fixedly provided with a plug seat, and a tail gas recovery bottle is inserted into and clamped with the plug seat. The utility model has the beneficial effects that: the tail gas produced in the detection process is recovered through the tail gas recovery bottle, so that the harmful substances in the tail gas are prevented from being discharged into the atmosphere to cause pollution, the tail gas can be subjected to harmless treatment, and the load of the sensor can be reduced by adopting a quantitative sampling detection method, so that the service life of the tester is effectively prolonged.

Description

Gas comprehensive tester

Technical Field

The utility model relates to the technical field of SF6 gas detection, in particular to a comprehensive gas tester.

Background

SF6 gas, i.e., sulfur hexafluoride, has found wide application in industrial fields. Because of stable performance, particularly strong insulation and arc extinguishing properties, the insulating material is popular with electric personnel. Therefore, it is widely used as an insulating medium for electric power equipment such as transformers, capacitors, and the like.

In theory, SF6 gas is colorless, odorless and basically five-toxic, but during the production process, a small amount of highly toxic gas such as sulfur trifluoride, hydrogen fluoride and the like is contained due to the fact that the gas is impure, meanwhile, a small amount of impurities are possibly mixed into the gas when the gas is filled into electrical equipment, the gas has certain toxicity, and during the use process of SF6 gas in the electrical equipment, toxic gas is generated due to the fact that arc extinction occurs.

When toxic gas generated by SF6 is discharged, the environment is polluted, and the service life of electrical equipment and operators are greatly damaged, so that the detection of SF6 gas leakage is required to be strictly performed.

In the practical use process, most of traditional comprehensive testers for SF6 gas directly connect purified tail gas into a tester, and after the gas sequentially passes through a humidity sensor, an SF6 concentration sensor, a particulate matter sensor and other sensors inside the tester, the content of substances in the gas can be rapidly detected. However, in the continuous and rapid detection process, no matter whether the detection result reaches the standard or not, the tail gas is directly discharged, if harmful substances are contained in the tail gas, the environment is polluted, harmless treatment on the tail gas is difficult, and the load of the tester is increased by continuously introducing the tail gas, so that the service life of the tester is reduced; in view of this, we propose a gas integrated tester that can carry out innocent treatment to tail gas and can improve tester life.

Disclosure of Invention

The utility model aims to solve the problems in the background technology and provides a gas comprehensive tester which can carry out innocent treatment on tail gas and can prolong the service life of the tester.

The technical scheme of the utility model is as follows: the utility model provides a gas comprehensive tester, includes the base, the top block of base is installed the main casing, the circuit board is fixed mounting in the interior bottom of base, fixed mounting has humidity transducer, SF6 concentration sensor and particulate matter sensor on the circuit board, the top fixed mounting of main casing has the tail gas quantitative cylinder, fixed mounting has the connection air cock on the roof of main casing, the top of connection air cock inserts the inside of tail gas quantitative cylinder; the air outlet at the bottom end of the connecting air tap is fixedly connected with the air inlet port of the humidity sensor through an air guide hose, the air outlet port of the humidity sensor is fixedly connected with the air inlet port of the SF6 concentration sensor through an air guide hose, and the air outlet port of the SF6 concentration sensor is fixedly connected with the air inlet port of the particulate matter sensor through an air guide hose; the top of the main shell is fixedly provided with a plug seat, the plug seat is inserted into and clamped with a tail gas recovery bottle, and the tail gas recovery bottle is fixedly connected with an air outlet port of the particulate matter sensor through an air guide hose; the top of the main machine shell is fixedly provided with a display, and the display is electrically connected with the circuit board through a wire.

Preferably, the top of socket is excavated and is had circular slot, fixed mounting has the gas needle that runs through circular slot on the socket, the bottleneck of tail gas recovery bottle inserts in the circular slot and rather than the block is connected, adopts plug-in mounting structure, is convenient for install the tail gas recovery bottle on the socket, improves the convenience of tail gas recovery bottle dismouting.

Preferably, the rubber sealing plug is installed in the bottleneck department block of tail gas recovery bottle, the top of gas needle passes the rubber sealing plug and inserts inside the tail gas recovery bottle, the bottom of gas needle is through the port fixed connection that gives vent to anger of air guide hose and particulate matter sensor, can seal the bottleneck of tail gas recovery bottle through the rubber sealing plug to make things convenient for the gas needle to pierce through.

Preferably, the top of host casing passes through screw fixed mounting has the limit cap, the roof of limit cap is all passed on the top of tail gas recovery bottle and tail gas quantitative cylinder and rather than inseparable joint, carries out spacingly by the limit cap to the top of tail gas recovery bottle, tail gas quantitative cylinder, has effectively improved the fastness after tail gas recovery bottle, the installation of tail gas quantitative cylinder.

Preferably, the top plate of the limiting cover is provided with a first circular opening and a second circular opening, the top of the tail gas recovery bottle penetrates through the first circular opening and extends to the upper side of the first circular opening, and the top of the tail gas quantitative cylinder penetrates through the second circular opening and extends to the upper side of the second circular opening, so that the limiting cover is conveniently fixed at the top of the main casing.

Preferably, the rubber piston is movably arranged in the tail gas quantitative cylinder, the push rod is fixedly arranged at the top of the rubber piston, the top end of the push rod penetrates through the top plate of the tail gas quantitative cylinder and extends to the upper part of the top plate, the push rod can be pushed to drive the rubber piston to move downwards, and the gas in the tail gas quantitative cylinder is conveniently pressed into the sensor in the tester.

Preferably, the decompression hole has been excavated on the roof of tail gas quantitative cylinder, the decompression hole sets up in the top of rubber piston, and when needs upwards pulling rubber piston, the inside gas that just is located the interval of rubber piston top of tail gas quantitative cylinder can follow decompression hole department and discharge, reduces the resistance that receives when rubber piston upwards moves.

Preferably, the top edge of base has excavated a plurality of constant head tanks, the bottom edge of host computer shell fixedly mounted has a plurality of reference columns, every the reference column all inserts in the assorted constant head tank and rather than inseparable joint, adopts plug-in type block mounting structure, conveniently carries out the dismouting to host computer shell and base, is convenient for overhaul the inside sensor of tester.

Preferably, the outer wall of the limiting cover is fixedly provided with a tail gas injection pipe, one end of the tail gas injection pipe is inserted into the limiting cover and fixedly connected with an air inlet hole cut on the wall of the tail gas quantitative cylinder, and the tail gas can be injected into the tail gas quantitative cylinder through the tail gas injection pipe, so that the tail gas can be conveniently introduced into the tester.

Compared with the prior art, the utility model has the following beneficial technical effects:

1. the tail gas after being purified is led into the tester through the air guide hose, and after the tail gas sequentially enters the humidity sensor, the SF6 concentration sensor and the particulate matter sensor which are arranged in the tester, the humidity, the sulfur dioxide concentration and the particulate matter concentration of the tail gas can be effectively detected, the tail gas generated in the detection process is concentrated in the tail gas recovery bottle, harmful substances in the tail gas are prevented from being directly discharged into the atmosphere, the pollution of the tail gas to the environment is further reduced, and the tail gas generated in the detection process is subjected to harmless treatment.

2. The purified tail gas is injected into the tail gas quantitative cylinder, the rubber piston is pushed to inject the tail gas into the sensor inside the tester, the quantitative sampling detection mode is adopted, the traditional mode of introducing the tail gas in batches is replaced, the tail gas can be comprehensively detected, the burden of the tester can be lightened, and the service life of the tester is effectively prolonged.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic overall appearance of the present utility model;

FIG. 3 is a schematic diagram illustrating the assembly of the tail gas recovery bottle and the socket of the present utility model;

fig. 4 is an assembled schematic view of the base, the main housing and the limiting cover of the present utility model.

Reference numerals: 1. a base; 101. a positioning groove; 2. a main housing; 21. positioning columns; 3. a limiting cover; 31. a first circular opening; 32. a second circular opening; 4. a socket; 41. a circular slot; 42. an air needle; 5. a tail gas recovery bottle; 51. a rubber sealing plug; 6. a tail gas quantitative cylinder; 61. a rubber piston; 62. a push rod; 63. a pressure relief hole; 7. a display; 8. a circuit board; 9. a humidity sensor; 10. SF6 concentration sensor; 11. connecting an air tap; 12. a particulate matter sensor; 13. a tail gas injection pipe.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

Example 1

As shown in fig. 1-4, the gas comprehensive tester provided by the utility model comprises a base 1, wherein a circuit board 8 is fixedly arranged at the inner bottom of the base 1, a humidity sensor 9, an SF6 concentration sensor 10 and a particulate matter sensor 12 are fixedly arranged on the circuit board 8, the three sensors are electrically connected with the circuit board 8, a main machine shell 2 is arranged at the top of the base 1 in a clamping way, and the three sensors are arranged in a closed space formed by the main machine shell 2 and the base 1, so that the sensors can be effectively protected; the top of the main machine shell 2 is fixedly provided with a display 7, the display 7 is electrically connected with a circuit board 8 through a wire, data detected by various sensors are analyzed by an analysis module on the circuit board 8 and then transmitted to a screen of the display 7, so that a worker can record and observe the detected data conveniently; a penetrating connecting air tap 11 is fixedly arranged on the top plate of the main shell 2, an air outlet port of the connecting air tap 11 is fixedly connected with an air inlet port of the humidity sensor 9 through an air guide hose, an air outlet port of the humidity sensor 9 is fixedly connected with an air inlet port of the SF6 concentration sensor 10 through an air guide hose, and an air outlet port of the SF6 concentration sensor 10 is fixedly connected with an air inlet port of the particulate matter sensor 12 through an air guide hose, so that tail gas can be ensured to be sequentially introduced into the humidity sensor 9, the SF6 concentration sensor 10 and the particulate matter sensor 12 from the connecting air tap 11, and comprehensive detection of the humidity, the sulfur dioxide concentration and the particulate matter content of the tail gas is facilitated; the top fixed mounting of host casing 2 has socket 4, inserts on the socket 4 and the block installs tail gas recovery bottle 5, and after the bottleneck of tail gas recovery bottle 5 inserted the circular slot 41 at socket 4 top inside, the top of installing the inside gas needle 42 of socket 4 then inserts tail gas recovery bottle 5 inside, and the bottom of this gas needle 42 is through the air guide hose and the port fixed connection that gives vent to anger of particulate matter sensor 12, ensures that the tail gas after the detection can be discharged into tail gas recovery bottle 5 in, is convenient for retrieve the tail gas that detects the production.

Further, the bottleneck department of tail gas recovery bottle 5 inserts and inseparable joint has rubber sealing plug 51, and the top of gas needle 42 passes rubber sealing plug 51 and extends to inside the tail gas recovery bottle 5, and after tail gas recovery bottle 5 was pulled out from socket 4, gas needle 42 then pulled out in rubber sealing plug 51, because rubber sealing plug 51 has good elasticity, after gas needle 42 was pulled out, the pinhole on the rubber sealing plug 51 can be sealed fast, prevents effectively that the inside tail gas of tail gas recovery bottle 5 from revealing.

Further, a plurality of positioning slots 101 are cut at the top edge of the base 1, a plurality of positioning columns 21 are fixedly assembled at the bottom edge of the main machine shell 2, and when the main machine shell 2 is installed at the top of the base 1, the positioning columns 21 are inserted into the corresponding positioning slots 101 and are tightly clamped with the corresponding positioning slots 101, so that the main machine shell 2 and the base 1 can be firmly connected into a whole; adopt bayonet block mounting structure, still conveniently carry out the dismouting to mainframe housing 2 and base 1, pull down the back from base 1 when mainframe housing 2, can overhaul the inside multiple sensor of tester, can improve sensor structure's life cycle.

In the embodiment, the purified tail gas is introduced into the tester, and after the tail gas enters the humidity sensor 9, the humidity in the tail gas can be detected, and the flue gas concentration can be better controlled according to the detected humidity data; after the humidity detection of the tail gas is finished, SF6 gas flows into the SF6 concentration sensor 10 at a constant flow rate, the resistance of the platinum resistance wire in the thermal conductivity cell is changed due to the concentration change of the SF6 gas to be detected, a Wheatstone bridge is used for converting a resistance signal into an electric signal, and the electric signal is amplified, temperature compensated and linearized through a circuit board to be changed into an SF6 concentration measurement value so as to be convenient for detecting the concentration of the SF6 gas; then the tail gas enters the particle sensor 12, after entering an oscillation hollow conical tube arranged in the particle sensor 12, the air flow passes through a filter membrane arranged at the oscillation end of the oscillation hollow conical tube, particles are accumulated on the filter membrane, after the mass of the filter membrane changes, the oscillation frequency of the oscillation hollow conical tube changes, the mass of the particles can be calculated through the change of the oscillation frequency, and then the concentration of the particles can be calculated by collecting the introduced amount of the tail gas, the ambient temperature and the air pressure value, so that the concentration of the particles in the tail gas can be conveniently detected; after the detection of various data is finished, the related data can be analyzed through an analysis module on the circuit board 8 and transmitted to the display 7, so that the detection data can be conveniently observed and recorded by staff; after comprehensive detection is performed through various sensor structures, generated tail gas is discharged into the tail gas recovery bottle 5, even if harmful substances are contained in the tail gas, the tail gas recovery bottle 5 can prevent the harmful substances from being discharged into the atmosphere to pollute the environment, so that the tail gas generated during detection can be subjected to harmless treatment.

Example two

As shown in fig. 1-4, on the basis of the first embodiment, the exhaust gas quantitative cylinder 6 is further included, the exhaust gas quantitative cylinder 6 is fixedly assembled at the top of the main machine shell 2, and a rubber sealing ring can be additionally arranged at the contact position of the bottom end of the exhaust gas quantitative cylinder 6 and the main machine shell 2, so that air leakage at the contact gap of the exhaust gas quantitative cylinder 6 can be prevented, and the sealing effect of the exhaust gas quantitative cylinder 6 is ensured; the top end of the connecting air tap 11 penetrates through the top plate of the main shell 2 and is inserted into the tail gas quantitative cylinder 6, so that the tail gas in the tail gas quantitative cylinder 6 can enter the connecting air tap 11, an electromagnetic valve is further arranged on the connecting air tap 11, the opening and closing of the connecting air tap 11 can be controlled through the electromagnetic valve, when the tail gas in the tail gas quantitative cylinder 6 needs to be injected into the sensor of the tester, the connecting air tap 11 is opened through the electromagnetic valve, the smoothness of a gas path is ensured, when the tail gas needs to be added into the tail gas quantitative cylinder 6, the connecting air tap 11 is closed through the electromagnetic valve, and before the tail gas quantitative cylinder 6 is not fully filled with the tail gas, the tail gas can be prevented from entering the sensor in advance; the rubber piston 61 is movably arranged in the tail gas quantitative cylinder 6, the push rod 62 is fixedly arranged at the top of the rubber piston 61, the top end of the push rod 62 penetrates through the top plate of the tail gas quantitative cylinder 6 and extends to the upper side of the top plate, a worker can drive the rubber piston 61 to move downwards by pressing the push rod 62 downwards, so that the tail gas is conveniently pressed into the sensor structure, if the push rod 62 is pulled upwards, the rubber piston 61 can be driven to move upwards, the rubber piston 61 is conveniently moved to the inner top of the tail gas quantitative cylinder 6, and the tail gas is conveniently added into the tail gas quantitative cylinder 6; the top fixed mounting of main casing 2 has limit cap 3, and fixed mounting has tail gas injection tube 13 on the outer wall of this limit cap 3, and the inside one end of tail gas injection tube 13 insert limit cap 3 is through the inlet port fixed connection of air duct and the inlet port fixed connection who digs on the section of thick bamboo wall of tail gas ration cylinder 6, can pour into tail gas ration cylinder 6 in follow tail gas injection tube 13 department, conveniently adds in advance tail gas.

Further, open and have first circular opening 31 and second circular opening 32 on the roof of spacing cover 3, after spacing cover 3 is fixed at the top of host casing 2, the top of tail gas recovery bottle 5 passes first circular opening 31 and rather than inseparable joint, and the top of tail gas quantitative cylinder 6 then passes second circular opening 32 and rather than inseparable joint, can play limiting displacement to the top outer wall of tail gas recovery bottle 5 and tail gas quantitative cylinder 6 this moment, strengthen the fastness after the two installation.

Further, the pressure relief hole 63 is cut in the roof of the tail gas quantitative cylinder 6, when the rubber piston 61 is required to be pulled to the inner top of the tail gas quantitative cylinder 6, gas inside the tail gas quantitative cylinder 6 and located in the section above the rubber piston 61 can be discharged from the pressure relief hole 63, and at the moment, the rubber piston 61 is pulled upwards, so that the resistance born by the rubber piston 61 can be reduced, and the operation is convenient.

In this embodiment, the purified tail gas is injected into the tail gas quantitative cylinder 6 from the tail gas injection pipe 13, the staff pushes the push rod 62 downwards, and then the rubber piston 61 can be driven to move downwards, and at the moment, the electromagnetic valve connected with the air tap 11 opens the passage in the air tap, so that the tail gas can be led into various sensor structures; when the tail gas is required to be added into the tail gas quantitative cylinder 6, a worker can pull the push rod 62 upwards and reset the rubber piston 61, and then the tail gas is added into the tail gas quantitative cylinder 6 from the tail gas injection pipe 13, so that the tail gas is conveniently pre-added; when the tail gas is injected, a worker does not need to pull the push rod 62, and when the tail gas enters the tail gas metering cylinder 6 from the tail gas injection pipe 13, the pressure in the section below the rubber piston 61 is increased along with the increase of the gas content in the tail gas metering cylinder 6, so that the rubber piston 61 can be pushed upwards to move upwards, and at the moment, the gas in the section above the rubber piston 61 is discharged outwards from the pressure release hole 63, so that the resistance born by the rubber piston 61 when the rubber piston 61 moves upwards can be reduced, and when the rubber piston 61 cannot move upwards any more, the tail gas metering cylinder 6 is filled with the tail gas; the tail gas quantitative cylinder 6 is adopted to limit the content of the single detected tail gas, facilitate the calculation of follow-up data, provide convenience for gas comprehensive test, and reduce the burden of sensors in the tester by adopting a quantitative sampling detection method relative to the traditional mode of introducing a large amount of tail gas, thereby effectively prolonging the service life of the tester.

The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.

Claims

1. The utility model provides a gaseous integrated tester, includes base (1), its characterized in that: the device comprises a base (1), a main machine shell (2) is mounted on the top of the base (1) in a clamping mode, a circuit board (8) is fixedly mounted at the inner bottom of the base (1), a humidity sensor (9), an SF6 concentration sensor (10) and a particulate matter sensor (12) are fixedly mounted on the circuit board (8), a tail gas metering cylinder (6) is fixedly mounted at the top end of the main machine shell (2), a connecting air tap (11) is fixedly mounted on the top plate of the main machine shell (2), and the top end of the connecting air tap (11) is inserted into the tail gas metering cylinder (6); an air outlet at the bottom end of the connecting air tap (11) is fixedly connected with an air inlet port of the humidity sensor (9) through an air guide hose, an air outlet port of the humidity sensor (9) is fixedly connected with an air inlet port of the SF6 concentration sensor (10) through an air guide hose, and an air outlet port of the SF6 concentration sensor (10) is fixedly connected with an air inlet port of the particulate matter sensor (12) through an air guide hose; the top of the main machine shell (2) is fixedly provided with a plug seat (4), the plug seat (4) is inserted into and clamped with a tail gas recovery bottle (5), and the tail gas recovery bottle (5) is fixedly connected with an air outlet port of the particulate matter sensor (12) through an air guide hose; the top of the main machine shell (2) is fixedly provided with a display (7), and the display (7) is electrically connected with the circuit board (8) through a wire.

2. The gas comprehensive tester according to claim 1, wherein a circular slot (41) is cut at the top end of the socket (4), an air needle (42) penetrating through the circular slot (41) is fixedly installed on the socket (4), and the bottle mouth of the tail gas recovery bottle (5) is inserted into the circular slot (41) and is in clamping connection with the circular slot.

3. The comprehensive gas tester according to claim 2, wherein a rubber sealing plug (51) is mounted at the bottle mouth of the tail gas recovery bottle (5) in a clamping manner, the top end of the gas needle (42) penetrates through the rubber sealing plug (51) and is inserted into the tail gas recovery bottle (5), and the bottom end of the gas needle (42) is fixedly connected with the gas outlet port of the particulate matter sensor (12) through a gas guide hose.

4. The comprehensive gas tester according to claim 1, wherein the top of the main machine shell (2) is fixedly provided with a limiting cover (3) through screws, and the top ends of the tail gas recovery bottle (5) and the tail gas quantitative cylinder (6) penetrate through the top plate of the limiting cover (3) and are tightly clamped with the top plate.

5. The comprehensive gas tester according to claim 4, wherein a first circular opening (31) and a second circular opening (32) are cut on a top plate of the limiting cover (3), the top of the tail gas recovery bottle (5) passes through the first circular opening (31) and extends to the upper side of the first circular opening, and the top of the tail gas metering cylinder (6) passes through the second circular opening (32) and extends to the upper side of the second circular opening.

6. The gas comprehensive tester according to claim 1, wherein a rubber piston (61) is movably mounted in the tail gas quantitative cylinder (6), a push rod (62) is fixedly mounted at the top of the rubber piston (61), and the top end of the push rod (62) penetrates through the top plate of the tail gas quantitative cylinder (6) and extends to the upper side of the top plate.

7. The gas comprehensive tester according to claim 6, wherein a pressure relief hole (63) is cut into a top plate of the tail gas quantitative cylinder (6), and the pressure relief hole (63) is arranged above the rubber piston (61).

8. The gas comprehensive tester according to claim 1, wherein a plurality of positioning grooves (101) are cut at the top edge of the base (1), a plurality of positioning columns (21) are fixedly installed at the bottom edge of the main machine shell (2), and each positioning column (21) is inserted into the corresponding positioning groove (101) and is tightly clamped with the corresponding positioning groove.

9. The comprehensive gas tester according to claim 4, wherein a tail gas injection pipe (13) is fixedly arranged on the outer wall of the limiting cover (3), and one end of the tail gas injection pipe (13) is inserted into the limiting cover (3) and fixedly connected with an air inlet hole cut on the wall of the tail gas quantitative cylinder (6).