RU2293923C1 - System of additional moistening of air in production building - Google Patents

Abstract

FIELD: the system is designed for creating comfort conditions of microclimate in production buildings particularly in quality of local air additional moistening systems.

SUBSTANCE: the system has pneumatic sprayers, circuits of pipelines serving for feeding to them water and compressed air and a block controlling the work of pneumatic sprayers. The sprayer is fulfilled of cylindrical bodies horizontally and vertically located and firmly connected under an angle of 90⁰. At that the horizontal body has on one of its ends conjugated with the vertical body a nozzle with an exterior diameter "D₄" and with an inner calibrated opening with a diameter "d" serving for feeding water through an opening with a diameter "D₂" fulfilled in the horizontal body coaxially with the calibrated opening with a diameter "d", and in the vertical body two mutually perpendicular openings are fulfilled, one of which with a diameter "D₁" serves for feeding compressed air and another with diameter "D₃" form with the nozzle having an exterior diameter "D₄", a ring clink with the width "1", where d - a diameter of the inner calibrated opening of the nozzle, D₁"- a diameter of the opening in the vertical body for feeding compressed air, "D₂" - a diameter of the opening in the horizontal body for feeding water, "D₃" - an exterior diameter of the ring chink formed with the horizontal opening in the vertical body and the nozzle, "D₄"- an exterior diameter of the nozzle, "1" - the width of the ring chink.

EFFECT: increases effectiveness and reliability of the process of pneumatic dispersion of water.

3 cl, 2 dwg

Description

The invention relates to techniques for air conditioning and can be used to create comfortable microclimate conditions in industrial premises, in particular as local dampening systems.

The closest technical solution to the claimed object is a system according to the patent of the Russian Federation No. 2067730, class. F 24 F 3/06 of 10/10/96 containing a spray gun and a control unit.

Its disadvantage is the relatively low efficiency of the pneumatic spraying process.

The technical result is an increase in the efficiency and reliability of the process of pneumatic spraying of water.

This is achieved by the fact that in the air after-humidification system consisting of pneumatic nozzles, piping networks used to supply water and compressed air to them, and a pneumatic nozzle control unit, the nozzle is made of horizontally and vertically arranged and rigidly connected at a 90 ° angle to cylindrical cases, and the horizontal case at one of its ends, paired with a vertical case, has a nozzle with an outer diameter of "D ₄ " and with an internal calibrated hole with a diameter of "d", which serves for water through a hole with a diameter of "D ₂ ", made in a horizontal case coaxially with a calibrated hole with a diameter of "d", and in a vertical case two mutually perpendicular holes are made, one of which with a diameter of "D ₁ " serves for supplying compressed air, and the other with a diameter "D _3" forms with the nozzle having an outer diameter "D _4", annular gap width "l", and the operation control unit comprises a pneumatic injector hair humidity controller, diaphragm valves, gate valves, needle choke to control pressure compression channel Air in front of diaphragm valves, voltage transformer, indicator lamps, and electropneumatic relay switch, whereby the compressed air nozzle is made with the following ratios of the dimensions of its basic elements, which are in the optimal range of values: D ₁ / D ₂ = 1.3 ... 1, 5; d / D ₄ = 0.5; D ₃ / D ₄ = 0.6 ... 0.7; l / D ₃ = 0.16 ... 0.17; where d is the diameter of the calibrated nozzle orifice, D ₁ is the diameter of the hole in the vertical housing for supplying compressed air, D ₂ is the diameter of the hole in the horizontal housing for supplying water, D ₃ is the outer diameter of the annular gap formed by the horizontal hole in the vertical housing and the nozzle , D ₄ is the outer diameter of the nozzle, l is the width of the annular gap.

Figure 1 shows the frontal section of the pneumatic nozzle of the humidification system, figure 2 - control unit for the operation of pneumatic nozzles.

Pneumatic dampening systems consist of nozzles (Fig. 1), piping networks used to supply water and compressed air to them, and a control unit for the operation of pneumatic nozzles (Fig. 2). In addition, there are safety devices that exclude the possibility of pouring water from the nozzles when the supply of compressed air to them is stopped.

The nozzle consists of cylindrical bodies 1 and 2, for example, bronze, horizontally and vertically arranged and connected by soldering at an angle of 90 °. The horizontal housing 1 at one of its ends, paired with the vertical housing 2, has a nozzle 6 with an external diameter of "D ₄ " and with an internal calibrated hole 7 with a diameter of "d" and serves to supply water coming from the pipeline network through the hole 3 with a diameter of " D ₂ ", made coaxially with the calibrated hole 7. To connect the main pipe network at the other end of the horizontal housing 1 there are special grooves 4. The vertical housing 2 of the nozzle is made with two mutually perpendicular holes 8 and 11. Open The hole 11 with a diameter of "D ₁ " serves to supply compressed air from the line through a fitting 12 made at the end of the housing 2. The hole 8 has a tapered 9 part and a calibrated cylindrical part 10 with a diameter of "D ₃ " and a width of "l". An internal calibrated hole 7 with a diameter of "d" is made in the horizontal housing 1 coaxially with the cylindrical part 10 with a diameter of "D ₃ " of the hole 8 of the vertical housing 2. A cut of the nozzle 6 with an external diameter of "D ₄ " is flush with the cylindrical part 10 diameter "D ₃ " of the hole 8 of the vertical housing 2, while forming an annular gap with a width of "l".

For optimal operation and reduce energy consumption, the pneumatic nozzle is made with the following size ratios of its main elements, which are in the optimal range of values: D ₁ / D ₂ = 1.3 ... 1.5; d / D ₄ = 0.5; D ₃ / D ₄ = 0.6 ... 0.7; l / D ₃ = 0.16 ... 0.17, where d is the diameter of the calibrated orifice of the nozzle, D ₁ is the diameter of the hole in the vertical housing for supplying compressed air, D ₂ is the diameter of the hole in the horizontal housing for supplying water, D ₃ - the outer diameter of the annular gap formed by a horizontal hole in the vertical casing and the nozzle, D ₄ - the outer diameter of the nozzle, l is the width of the annular gap.

Figure 2 presents the control unit of the pneumatic nozzles. It contains a hair moisture regulator 15, diaphragm valves 14 and 17, shut-off valves 13, a needle throttle 16 for regulating the pressure of compressed air in front of the diaphragm valves, a voltage transformer 18, control lamps 19 and 22, a switch 21 and an electro-pneumatic relay 20.

The humidification system operates as follows.

Pneumatic nozzles spray water with compressed air leaving the nozzle openings 10 at a speed of over 300 m / s. The jets of compressed air capture the water supplied to them from the nozzle 6 through a calibrated hole 7 with a diameter of "d" and, expanding, spray it into small droplets that evaporate in the movement zone of the air flow that supports them in suspension. Air enters from below through an opening 11 in a vertical casing 2 and exits through a narrow annular gap with a width of "l" and a diameter of "D ₃ " between the casing 2 and the nozzle 6. Coming out of this gap, compressed air picks up the water supplied to the nozzle and draws it into its movement and spray water.

The control unit of the pneumatic nozzles works as follows. When supplying compressed air to the cavity above the membranes of valves 14 and 17, the supply of compressed air and then water is first opened. After turning off the compressed air supply, the valves close in the reverse order; this protects against the risk of leakage of unsprayed water in the pipes through the nozzles. The described safety device is also used to automatically control the operation of the nozzles, which is carried out using a humidity controller 15 acting on an electro-pneumatic relay (electromagnetic valve) 20 mounted above the membrane valve 14 located on the water supply line. This relay, depending on whether the electric current is turned on or off, opens or closes a narrow hole in the valve cover 14, opening or closing the air outlet under the membrane to the atmosphere. At the same time, the pressure on the corresponding membranes changes, and consequently, the supply of water and compressed air to the nozzles. In some cases, each membrane valve has its own electro-pneumatic relay, which is switched on through an independent time relay. The electro-pneumatic relays are adjusted so that the water supply is turned off 10 seconds before the supply of compressed air stops, and turned on 10 seconds later than the resumption of the air supply.

Claims (3)

1. Air humidification system, consisting of pneumatic nozzles, piping networks used to supply water and compressed air to them, and a pneumatic nozzle operation control unit, characterized in that the nozzle is made of horizontally and vertically arranged and rigidly connected at a 90 ° angle to cylindrical cases, and the horizontal case at one of its ends, mating with the vertical case, has a nozzle with an outer diameter of "D ₄ " and with an internal calibrated hole with a diameter of "d", which serves to supply water through a hole with a diameter of "D ₂ ", made in a horizontal case coaxially with a calibrated hole with a diameter of "d", and in a vertical case two mutually perpendicular holes are made, one of which with a diameter of "D ₁ " serves for supplying compressed air, and the other with a diameter "D ₃ " forms, with a nozzle having an outer diameter "D ₄ ", an annular gap of width "l". 2. The air humidification system according to claim 1, characterized in that the pneumatic nozzle operation control unit comprises a hair moisture regulator, membrane valves, shut-off valves, a needle throttle for regulating the pressure of compressed air in front of the membrane valves, a voltage transformer, control lamps, a switch and an electro-pneumatic relay. 3. The air humidification system according to claim 1, characterized in that the pneumatic nozzle is made with the following size ratios of its main elements, which is in the optimal range of values: D ₁ / D ₂ = 1.3 ... 1.5; d / D ₄ = 0.5; D ₃ / D ₄ = 0.6 ... 0.7; l / D ₃ = 0.16 ... 0.17, where d is the diameter of the internal calibrated nozzle orifice; D ₁ - the diameter of the holes in the vertical housing for supplying compressed air; D ₂ - the diameter of the holes in the horizontal housing for water supply; D ₃ - the outer diameter of the annular gap formed by a horizontal hole in the vertical housing and the nozzle; D ₄ - the outer diameter of the nozzle; l is the width of the annular gap.

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