RU2161349C1 - Suction device for storage cells - Google Patents

Abstract

FIELD: ventilation equipment, production facilities with local sources of steam and gas liberation to environment. SUBSTANCE: suction device includes ventilation system made of collector, absorber, bag filter, fan intercommunicated by means of air conduit of reservoir including corrugated hoses with exhaust hoods and balancing mechanisms. Number of reservoirs depends on demands of plant. Hoses communicate with collector with the use of branch pipe. Valve controlling air flow through branch pipe is installed inside corrugated hose, in its upper part. EFFECT: reduced concentration of gaseous hydrogen, most complete trapping of aerosol by absorbent, independent maintenance of storage cells and connection of reservoir to hood over point of location of storage cells. 1 dwg

Description

 The invention relates to ventilation devices and may find application in industries with local sources of gas-vapor emissions into the environment.

 Mostly, this invention is intended to reduce emissions of harmful substances into the atmosphere and battery rooms from the surface of the electrolyte of power sources during charging.

 Known ventilation device for the battery, comprising a housing with polyethylene granules, which are divided by partitions into layers / see A.S. USSR N 599299, MKI H 01 M 2/12, 1978, B.I. N 11 /.

 A disadvantage of the known technical solution is the allocation of gaseous products of a chemical reaction that proceeds when charging the battery in the working room.

 This drawback is due to the design of the device, intended only for trapping aerosol electrolyte, which is removed from the body when the gas bubbles (hydrogen, arsenic hydrogen, antimony hydrogen and others) burst. The accumulation of gases in a limited space of battery rooms increases the explosion hazard of the process.

 A fume hood with doors for its maintenance is also known, inside of which are shelves for batteries, and an exhaust duct is connected to its upper wall / see, for example, the book by N. Khryukin. Ventilation and heating of battery rooms. M .: Energy, 1979.P. 16-17 /.

 The advantage of this technical solution is to reduce ventilation air by 2 times due to the tightness of the receiver.

 The disadvantages of fume hoods include emissions of reaction products into the environment and their limited application.

 These disadvantages are due to the fact that the sealed conditions of charging the batteries, which reduce the flow of ventilation air and prevent the emission of vapors and gases into the working room, increase their concentration in the air flow of the ventilation system. The absence of traps in the ventilation system leads to air pollution.

 In addition, the loading of the shelves of the cabinet is carried out manually, thereby limiting the maintenance of large batteries or rechargeable batteries.

 The closest in technical essence and the achieved result to the invention is an exhaust device consisting of a ventilation system with an air flow control unit, a nozzle with an umbrella made in the form of a truncated quadrangular pyramid that communicates a battery with an air duct of the ventilation system / see, for example, Khryukin’s book N .WITH. Ventilation and heating of battery rooms. M .: Energy, 1979.P. 17-18 /.

 The disadvantage of this technical solution is the gas contamination of the workrooms due to the release of gas reaction products and, together with them, aerosol electrolytes into the environment.

 This drawback is due to the limited range of open local suction. In the stagnant areas of the workroom, which is not equipped with additional supply and exhaust ventilation, gaseous hydrogen can accumulate to explosive concentrations.

 The purpose of the invention is the reduction of emissions generated by charging batteries in the workplace and the atmosphere.

 This goal is achieved by the fact that in the exhaust device for batteries, which includes a ventilation system with an air flow control unit, connected to the battery through an air duct and a receiver connected to an umbrella made in the form of a truncated quadrangular pyramid, the air duct of the ventilation system is equipped with a collector, a nozzle absorber in series and a bag filter, the receiver is made in the form of a corrugated sleeve having the ability to change its length in the vertical direction, and nt - of a transparent material and is provided with a balancing mechanism, wherein the air flow control unit is connected to the corrugated sleeve, mounted inside it in a location message with a collector and is formed as a valve.

 Distinctive features of the proposed exhaust device is that the air duct of the ventilation system is equipped with a sequentially mounted manifold, nozzle absorber and bag filter, the receiver is made in the form of a corrugated sleeve having the ability to change its length in the vertical direction, and the umbrella is made of transparent material, and is equipped with a balancing mechanism wherein the air flow control unit is connected to the corrugated sleeve, installed inside it in the place of communication with the collector and flax in the form of a valve.

 This ensures a decrease in the concentration of gaseous hydrogen and the most complete capture of the aerosol absorbent; autonomous battery maintenance and receiver connection with an umbrella at the place of their placement.

 The invention is illustrated in the drawing, which shows a schematic diagram of an exhaust device.

 The exhaust device consists of a ventilation system, which includes a manifold 1, a nozzle absorber 2, a bag filter 3, a fan 4, interconnected by an air duct 5, a receiver including corrugated sleeves 6 with umbrellas 7 and balancing mechanisms 8. The number of receivers depends on the needs of the enterprise . The sleeves are communicated with the collector 1 using the pipe 9.

 Inside the corrugated sleeve 6 in its upper part, a valve 10 is installed that controls the air flow through the pipe 9.

 An umbrella 7 is connected to the balancing mechanism through a cable 11 and a block 12.

 The battery 13 to the charging point is left on the trolley 14. In addition, the batteries installed on self-propelled trolleys (electric cars) can be charged.

 The absorber 2 has a nozzle 15 and is equipped with an absorbent circulation line including a collector 16, irrigation nozzles 17, an absorbent collector 18, a pipe 19, an intermediate tank 20, a pump 21, a pipe 22, valves 23, 24.

 The bag filter 3 is made of a set of filter bags 25, while the inter-sleeve space 25 is communicated through a pipe 26 with an air duct 5.

 The sleeve space 25 is separated from the working area of the absorber by a tube sheet 27.

 The opposite end of the collector 1 is taken outside the working room (wall 28) for charging the batteries and is provided with a knock-out surface 29.

 The exhaust device operates as follows. Before starting work on charging the batteries 13 include a line of circulation of the absorbent. The liquid from the intermediate tank 20 by the pump 21 with the open valve 23 and the closed valve 24 is fed through the pipeline to the collector 16 and then to the irrigation nozzles 17. The liquid sprayed by the irrigation nozzles 17 covers the entire cross section of the absorber 2 and enters the nozzle layer 15, forming a mass transfer surface for gas-vapor flow. The absorbent flowing from the nozzle 15 is collected in the collector 18. After the circulation line has reached the specified mode, the fan 4 is turned on. The battery 13 mounted on the carriage 14 or on a self-propelled carriage (electric car) is placed under a free receiver. In the idle position, the umbrella 7 is lifted up, thereby pulling the corrugated sleeve 6. At the same time, the valve 10 closes the inlet of the nozzle 9. Disconnecting the inactive receivers from the ventilation system increases the concentration of vapors and gases in the air and the efficiency of the absorber 2. By stretching the sleeve 6 lower the umbrella 7 and cover the battery with it 13. The balancing mechanism 8 ensures the fixation of the umbrella in any position. When the receiver is in the operating position, the valve 10 opens the hole of the nozzle 9 and the ventilation system communicates with the battery 13. Due to the fact that the umbrella 7 is made in the form of a truncated quadrangular pyramid, fixing it at different heights with a balancing mechanism 8 provides regulation of the concentration of gases emitted in the ventilation system ( the area of the gap between the battery cover 13 and the umbrella 7) changes. The electrolyte aerosol, hydrogen and its compounds through a flexible sleeve 6 enter the collector 1, and from it to the lower part of the absorber 2. The aerosol and gases are in contact with the absorbent draining from the nozzle 15, the surface of the absorbent in the collector 18, the mass transfer surfaces in the layer of the nozzle 15 and dispersed absorbent over the nozzle 15. The multi-stage contact of the phases in the absorber 2 provides an effective air purification from aerosol electrolyte. From the absorber 2, the air with drops of absorbent is directed to the bag filter 3, in which moisture is separated from the air on the filter bags 25.

 The purified air through the pipe 26, the duct 5 and the fan 4 is discharged into the atmosphere. The absorbent with a high concentration of acid or alkali periodically with the closed valve 23 and open valve 24 sent for cleaning. Parallel connection of workrooms to the collector 1 for charging acidic and alkaline batteries 13 will ensure the neutralization of impurities directly in the absorber 2.

 After charging, umbrella 7 rises. The length of the corrugated sleeve 6 is reduced and the valve 10 overlaps the pipe 9, which communicates the battery 13 with the collector 1 of the ventilation system.

 In the event of an emergency in the ventilation system, a knock-out surface 29 is provided, located at the end of the collector 1, outside the wall (wall 28) of the working room.

 To monitor the progress of the process and obtain operational information, the umbrella 7 is made of transparent material.

 The proposed exhaust device is planned to be introduced at Nizhnekamskshina JSC for charging electric car batteries without removing power supplies from self-propelled carts.

 Thus, the introduction of an exhaust device for batteries will reduce the concentration of gaseous hydrogen and provide the most complete capture of aerosols with absorbent material.

Claims (1)

 An exhaust device for batteries, including a ventilation system with an air flow control unit, connected to the battery through an air duct and a receiver connected to an umbrella made in the form of a truncated quadrangular pyramid, characterized in that the air duct of the ventilation system is equipped with a collector, nozzle absorber and a bag filter in series , the receiver is made in the form of a corrugated sleeve having the ability to change its length in the vertical direction, and the umbrella is made of transparent Container material and is provided with a balancing mechanism, wherein the air flow control unit is connected to the corrugated sleeve, mounted inside it in a location message with a collector and is formed as a valve.