CN218671609U - Portable sulfur hexafluoride gas recovery device - Google Patents

Abstract

The utility model discloses a portable sulfur hexafluoride gas recovery device belongs to the gas recovery field, including gas collection system, control system, the gas collection system includes gas collecting bottle, pipe, vacuometer, manometer, gas flowmeter, valve, the gas collecting bottle passes through the pipe and is connected with the check out test set gas vent, the pipe head end is provided with the valve, and the middle part is connected and is provided with manometer and gas flowmeter, be provided with the joint on the gas collecting bottle, the gas collecting bottle is connected with gaseous moisture content tester through connecting, control system includes PLC controller, power, touch-sensitive screen, and the gas collecting bottle outside is provided with PLC controller, power, touch-sensitive screen, PLC controller and power, touch-sensitive screen, vacuometer, manometer, gas flowmeter, valve electric connection. The device is small in overall size and light in weight, and is integrated into an integrated structure convenient for transportation by arranging the support and the pulley for combined transportation, so that various construction sites can be met, the use difficulty is low, and the device is simple and easy to operate.

Description

Portable sulfur hexafluoride gas recovery device

Technical Field

The utility model belongs to the gas recovery field specifically is a portable sulfur hexafluoride gas recovery unit.

Background

SF6 gas is currently widely cited in the power industry. The existing SF6 gas tester does not have a matched special SF6 recovery device for testing, and when gas inside SF6 equipment in field use is detected, exhaust gas is randomly discharged into the atmosphere to pollute the environment.

In actual operation, the disadvantages of the dedicated SF6 recovery plant are evident, and are summarized as the following points:

the rated capacity of a common SF6 recovery device is large, an alternating current power supply is 380V, and like in a substation extension project, a substation maintenance power supply point is far away from a construction site, and the SF6 recovery device is not easy to realize when the power supply is connected. When the SF6 recovery device is used, most SF6 recovery devices and test instruments cannot be well connected, so that the recovery effect is not good. The conventional SF6 recovery device is large in size, heavy in weight, high in requirement on the flatness of the site in the using process and required to be transferred by a machine. The market price of the equipment is high.

In a word, when a tester recovers SF6 gas which is generated in the test and needs to be recovered, the flexibility, the use degree and the operability of the SF6 recovery device on the market are extremely difficult to realize, and the SF6 recovery device can be influenced by various factors such as environment and equipment and is difficult to actually recover.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a portable sulfur hexafluoride gas recovery device, which can recycle gas through a gas collecting bottle, has small volume and light weight, can satisfy various construction sites through the combined transportation of a support and pulleys, is provided with a power supply, is not limited by the installation position of an SF6 device, and has high integration degree and convenient use by adopting a PLC controller.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a portable sulfur hexafluoride gas recovery unit, includes gas collection system, control system, the gas collection system includes gas collecting bottle, pipe, vacuum meter, manometer, gas flowmeter, valve, the gas collecting bottle passes through the pipe and is connected with the check out test set gas vent, the pipe head end is provided with the valve, and the middle part is connected and is provided with manometer and gas flowmeter, be provided with the joint on the gas collecting bottle, the gas collecting bottle passes through the joint and is connected with gaseous moisture content tester, control system includes PLC controller, power, touch-sensitive screen, and the gas collecting bottle outside is provided with PLC controller, power, touch-sensitive screen, PLC controller and power, touch-sensitive screen, vacuum meter, manometer, gas flowmeter, valve electric connection.

Furthermore, each connector of the device is provided with a leakage-proof sealing ring.

Further, the catheter valve is provided as a one-way valve.

Further, the pressure gauge is a relative vacuum gauge.

Further, the vacuum gauge is vertically arranged on the gas collecting bottle and is kept at the same level with the measuring point.

Further, the device is provided with a buzzer and an LED lamp.

Furthermore, the buzzer, the LED lamp and the PLC controller are electrically connected.

Furthermore, the PLC controller, the power supply and the gas moisture content tester are arranged on two sides of the gas collecting bottle through the support.

Furthermore, a groove for placing the gas collecting bottle is formed in the support, and a pulley convenient to move is arranged at the bottom of the support.

Further, a stopping structure is arranged on the pulley at the bottom of the support. Utility model's beneficial effect:

the utility model provides a portable sulfur hexafluoride gas recovery device carries out recovery processing to gas through the gas collecting bottle, and the whole device is small, and light in weight through setting up support and pulley combination transportation, integrates the integral type structure of being convenient for the transportation with the device, can satisfy various job sites, and the device is from taking the power, does not receive the mounted position restriction of SF6 device, adopts PLC controller control, uses the degree of difficulty low, simple easy operation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a circuit diagram of the present invention;

in fig. 1-2, 1-gas cylinder, 2-vacuum meter, 3-pressure meter, 4-gas flowmeter, 5-PLC controller, 51-touch screen, 52-buzzer, 53-LED lamp, 6-conduit, 7-gas moisture content tester, 8-valve, 9-support, 10-pulley, 11-power supply, 12-connector.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail a preferred embodiment of the present invention with reference to the accompanying drawings to facilitate understanding of the skilled person.

As shown in the figure, the portable sulfur hexafluoride gas recovery device comprises a gas collection system and a control system. The gas collection system comprises a gas collection bottle 1, a guide pipe 6, a vacuum meter 2, a pressure gauge 3, a gas flowmeter 4 and a valve 8. Gas collecting bottle 1 be connected through pipe 6 and check out test set gas vent, preferred, each connector department of gas recovery unit all is provided with the leak protection sealing washer, prevents that gas leakage from causing the pollution, and the leak protection sealing washer adopts the silica gel material to produce and makes, and silica gel is high temperature resistant, and is able to bear or endure the si and split, except taking place the reaction with strong acid strong alkali, does not receive the influence of any other chemical medium, so is the inflatable seal material of relatively ideal, and the more ordinary sealing washer effect of in-service use effect is better. The head end of the guide pipe 6 is provided with a valve 8, the valve 8 is used for controlling SF6 gas to enter the guide pipe 6 and the gas collecting bottle 1, in order to prevent the gas backflow situation, stable SF6 gas in the recovery process is ensured to flow into the gas collecting bottle 1 from the gas outlet of the sulfur hexafluoride gas detector through the guide pipe 6, the valve 8 adopts a one-way valve, and the gas flow can only flow from one direction and can not flow reversely. The middle part of the guide pipe 6 is connected with a pressure gauge 3 and a gas flowmeter 4, the pressure gauge 3 takes an elastic element as a sensitive element, the elastic deformation of the sensitive element in the gauge is used for measuring and indicating the pressure of the gauge pressure gauge higher than the environmental pressure, the pressure deformation is transmitted to the pointer through a switching mechanism of a movement in the gauge, the pointer is caused to rotate to display the pressure, and the pressure gauge 3 is used for detecting the pressure in the guide pipe 6; the gas flow meter 4 is a meter for measuring the gas flow, and is installed in a pipeline to record the amount of gas flowing through, the thermal gas flow meter mainly utilizes the thermal diffusion principle, the physical condition of the thermal diffusion principle mainly comprises two thermal resistors sensitive to temperature, one of the thermal resistors is used as a speed sensor, the other thermal resistor is used as a temperature sensor to realize the automatic compensation function for the gas temperature change, when the physical condition is met, the thermal gas flow meter is in a normal working state, once gas flows through, the temperature sensor increases or decreases the temperature of the gas to maintain the gas flow constant, therefore, the flow rate of the gas can be judged by measuring the current in the circuit, the faster the gas flow rate, the more heat is taken, the temperature of the sensor decreases, the current in the circuit increases to maintain the temperature constant, on the contrary, when the current in the circuit is in a decreasing trend, the gas flow rate is also in a decreasing state, the flow rate and the current are in a proportional relation, and the gas flow meter 4 is used for detecting the SF6 gas flow in the conduit 6. The vacuum meter 2 is arranged at the bottle mouth of the gas collecting bottle 1, the vacuum meter must be vertically arranged at the bottle mouth and strives to be kept at the same level with a measuring point, if the error is overlarge, the additional error caused by a liquid column does not need to be considered when measuring gas, and the vacuum meter is used for detecting the vacuum degree of the gas collecting bottle 1. A vacuum gauge is an instrument for measuring vacuum degree or gas pressure, and generally measures gas pressure by using a change in some physical effect of gas under different gas pressures. There are generally two methods for the identification of the degree of vacuum: firstly, using 'absolute pressure' and 'absolute vacuum degree', in practical condition, the absolute pressure value of the vacuum pump is between 0-101.325 KPa, the absolute pressure value needs to be measured by an absolute pressure instrument, and at 20 ℃, and the place with altitude =0, the initial value of the instrument (absolute vacuum meter) for measuring the vacuum degree is 101.325KPa, namely a standard atmospheric pressure; the other is marked by "relative pressure" and "relative vacuum degree" (i.e. pressure lower than "atmospheric pressure"), the "relative vacuum degree" refers to the difference between the pressure of the measured object and the atmospheric pressure of the measuring place, the measurement is carried out by using a common vacuum meter, the initial value of the meter is 0 under the state without vacuum (i.e. normal pressure), and when the vacuum is measured, the value is between 0 and-101.325 KPa (generally expressed by negative number). The vacuum degree which is universal in the international vacuum industry is also the most scientific one which is marked by absolute pressure and refers to ultimate vacuum, absolute vacuum degree and absolute pressure, but the relative vacuum degree (relative pressure, gauge pressure of a vacuum gauge and negative pressure) is widely applied because the measuring method is simple and convenient, the measuring instrument is very common, is easy to buy and has low price, and the relative vacuum gauge is also adopted to measure the vacuum value in the gas collecting bottle 1 for convenient reading in the device. Two connectors 12 are arranged on the gas collecting bottle 1, and the gas collecting bottle 1 is connected with the gas moisture content tester 7 through the connectors 12. The gas water content detector 7 is also called micro-water measuring instrument, the measuring principle is Karl Fischer coulometry, also called electric quantity method, the measuring range is wide, the response time is fast, the measuring period is short, the display is visual, the operation is simple and convenient, the instrument is suitable for a wide range of fields, the humidity measurement of air, nitrogen, inert gas and any gas without corrosive medium is particularly suitable for the humidity measurement of SF6 gas. During measurement, the upper thread end of the measuring pipeline is connected with the switch connector and is screwed down by a wrench, the needle valve at the other end of the measuring pipeline is closed, one end of the quick connector on the measuring pipeline is inserted into the sampling port on the measuring instrument, the exhaust pipeline is connected to the air outlet, and finally the switch connector is connected with the gas collecting bottle connector 12 and is screwed down by the wrench. The instrument preferentially uses alternating current, when using direct current, the current battery capacity can be observed through the upper right corner, if the capacity is lower than about 20%, the instrument can be used continuously after being shut down and charged. When the measurement is started, the needle valves on the measurement pipelines of the instrument are all opened, then the flow valves on the panels are used for regulating the flow, the measurement of the gas dew point can be started by regulating the flow to a corresponding value, the measurement time is 5-10 minutes, and then each device needs 3-5 minutes.

Recovery unit is provided with support 9, and support 9 is whole to be "concave" shape structure, is provided with the recess that is used for placing gas collecting bottle 1 and the platform of installation PLC controller 5, power 11, gaseous moisture content tester 7, PLC controller 5, power 11, gaseous moisture content tester 7 pass through the support setting in gas collecting bottle 1 both sides, whole device is overall structure, for convenient the removal, installs pulley 10 in support 9 bottom, and operating personnel reaches the light mesh of removing the operative installations through promoting pulley 10, and for guaranteeing that the device is fixed when retrieving gas, be provided with on the pulley 10 and stop the structure, the locking stops that back pulley 10 is not slidable. Preferably, the pulley 10 can also be made into a folding and recycling structure, the bottom surface of the support 9 is provided with the pulley 10 and a pulley storage groove, the pulley 10 is connected with the support 9, a folding assembly capable of being turned and folded is arranged in the direction that the pulley 10 is close to the pulley storage groove, the folding assembly comprises a pulley folding block and a sliding block driving the pulley folding block to rotate and fold, a rotating shaft is arranged on the pulley folding block, a spiral guide groove is arranged on the rotating shaft, a guide block matched with the spiral guide groove and used for controlling the rotation of the rotating shaft is arranged on the sliding block, the pulley 10 is folded and recycled into the pulley storage groove at the bottom of the support 9 when the pulley does not need to move, and the pulley is folded and recycled from the pulley storage groove for use when the pulley moves.

The device the control system comprises a PLC (programmable logic controller) 5, a power supply 11 and a touch screen 51, and the control system is provided with an alarm device buzzer 51 and an LED lamp 53. Set up PLC controller 5 and power 11 outside gas collecting bottle 1, touch-sensitive screen 51, vacuum gauge 2, manometer 3, gas flowmeter 4, valve 8 electric connection, operating personnel accessible PLC controller 5 and touch-sensitive screen 51 open or close valve 8, vacuum gauge 2, manometer 3, gas flowmeter 4 is connected the back with PLC controller 5, can observe 6 internal pressure of pipe and SF6 gas flow through touch-sensitive screen 51, the real-time data of 1 inside vacuum value of gas collecting bottle, the controller is supplied power by power 11, power 11 adopts 12V DC power supply, be provided with switch and be used for start/stop device. The PLC controller 5 is connected with the buzzer 51 and the LED lamp 53, the LED lamp 53 is used for indicating the running state of the device, when the device runs normally, the LED lamp 53 indicates that the device is in a normally bright state normally, when SF6 gas in the gas collecting bottle 1 is filled, the gas collecting bottle 1 is in a vacuum state at the moment, the display value of the vacuum meter 2 is negative, the PLC controller 5 turns off the LED lamp 53, the LED lamp 53 is in a normally dark state, and the state is displayed on the touch screen 51 as full. The buzzer 51 is used for alarming and informing an operator when the gas collecting bottle 1 is full of SF6 gas. Preferably, in order to reduce controller components, the buzzer 51 can be set as a power failure alarm connected with the LED lamp 53, the power failure alarm is provided with a power failure alarm host, a power failure detection module and a built-in battery, when the gas collection bottle 1 is filled with SF6 gas, the LED lamp 53 is in a normally dark state, the power supply at the LED lamp 53 is disconnected, the power failure detection module of the power failure alarm detects the power failure condition and gives an alarm, power is supplied by the built-in battery, the power failure alarm is only associated with the LED lamp 53, and other related modules are not required to be connected.

Utility model's working process: a duct 6 of an exhaust port of the sulfur hexafluoride gas detector is connected to the device, and the duct 6 is communicated with the gas collecting bottle 1. Before the use, the display data of the vacuum gauge 2 is checked to be normal, namely, after a pointer of the vacuum gauge is displayed on the left and right of a scale of 0, the two connectors 12 are connected with an SF6 gas moisture tester, the SF6 gas moisture tester is opened to adjust the flow to 0.4-0.6L/min, at the moment, whether the pressure value shown by the pressure gauge 3 is consistent with the pressure data of the SF6 gas moisture tester 7 or not is compared, the valve 8 is opened to be in an opening state after the readings are consistent, the power supply 11 is turned on, and the gas recovery device is started. When the device normally operates, the LED lamp 51 normally indicates that the device is in a constant state, real-time data of pressure and SF6 gas flow inside the guide pipe 6 and the vacuum value inside the gas collecting bottle 1 can be observed through the touch screen 51 of the PLC controller 5, after a period of time, when SF6 gas in the gas collecting bottle 1 is filled, the LED lamp is turned off and is in a normally dark state, the touch screen 51 of the PLC controller 5 displays that the gas collecting bottle 1 is filled, the PLC controller 5 automatically turns off the valve 8, the buzzer 52 is turned on simultaneously to give an alarm, and after the alarm is received by an operator, the power supply 11 is turned off, the gas collecting bottle 1 and the guide pipe 6 are disconnected, and the collection work is completed.

The utility model provides a portable sulfur hexafluoride gas recovery device carries out recovery processing to gas through the gas collecting bottle, and the whole device is small, and light in weight through setting up support and pulley combination transportation, integrates the integral type structure of being convenient for the transportation with the device, can satisfy various job sites, and the device is from taking the power, does not receive the mounted position restriction of SF6 device, adopts PLC controller control, uses the degree of difficulty low, simple easy operation.

Finally, the above preferred embodiments are only intended to illustrate the technical solution of the invention and not to limit it, while the invention has been described in detail by the above preferred embodiments, it should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention defined by the claims.

Claims (10)

1. The utility model provides a gaseous recovery unit of portable sulfur hexafluoride which characterized in that: including gas collection system, control system, the gas collection system includes gas collecting bottle, pipe, vacuometer, manometer, gas flowmeter, valve, the gas collecting bottle passes through the pipe and is connected with the check out test set gas vent, the pipe head end is provided with the valve, and the middle part is connected and is provided with manometer and gas flowmeter, be provided with the joint on the gas collecting bottle, the gas collecting bottle passes through the joint and is connected with gaseous moisture content tester, control system includes PLC controller, power, touch-sensitive screen, and the gas collecting bottle outside is provided with PLC controller, power, touch-sensitive screen, PLC controller and power, touch-sensitive screen, vacuometer, manometer, gas flowmeter, valve electric connection.

2. A portable sulphur hexafluoride gas recovery device according to claim 1, wherein: and each connecting port of the device is provided with a leakage-proof sealing ring.

3. A portable sulphur hexafluoride gas recovery device according to claim 1, wherein: the conduit valve is configured as a one-way valve.

4. A portable sulphur hexafluoride gas recovery device according to claim 1, wherein: the pressure gauge is a relative vacuum gauge.

5. A portable sulphur hexafluoride gas recovery device according to claim 1, wherein: the vacuum meter is vertically arranged on the gas collecting bottle and is kept at the same level with the measuring point.

6. A portable sulphur hexafluoride gas recovery device according to claim 1, wherein: the device is provided with a buzzer and an LED lamp.

7. A portable sulphur hexafluoride gas recovery device according to claim 6, wherein: the buzzer, the LED lamp and the PLC are electrically connected.

8. A portable sulphur hexafluoride gas recovery device according to claim 1, wherein: the PLC controller, the power supply and the gas moisture content tester are arranged on two sides of the gas collecting bottle through the support.

9. A portable sulphur hexafluoride gas recovery device according to claim 8, wherein: the support is provided with a groove for placing the gas collecting bottle, and the bottom of the support is provided with a pulley convenient to move.

10. A portable sulphur hexafluoride gas recovery device according to claim 9, wherein: and a stopping structure is arranged on the pulley at the bottom of the support.

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