SU655835A1

SU655835A1 - Device for switching air stream in ventilation channels

Info

Publication number: SU655835A1
Application number: SU762323416A
Authority: SU
Inventors: Евгений Степанович Коноплев
Original assignee: Предприятие П/Я М-5703
Priority date: 1976-02-16
Filing date: 1976-02-16
Publication date: 1979-04-05

Description

Изобретение относитс к технике вентил ции горной промышленности, а более конкретно , к устройствам дл переключени струи воздуха в вентил ционных ка 1алах, используемых преимущественно в вентил UHOHHiiix установках главного проветривани шахт.The invention relates to a technique of ventilation of the mining industry, and more specifically to devices for switching air jets in ventilation ducts, which are used primarily in UHOHHiiix valves for main ventilation installations in shafts.

Известна шахтна вентил ционна установка главного проветривани , оборудованна осевыми вентил торами с обводным каЬ1алом , в которой применена л да двухстороннего действи , установленна на центральной оси вращени в месте соединени свободного кольцевого канала с каналами, соедйн юидими его с наружной атмосферой и рудничной вентил ционной выработке ., fl.A well-known shaft ventilation installation of the main ventilation system is equipped with axial fans with a bypass cage, in which a two-sided action is used, installed on the central axis of rotation at the junction of the free annular channel with the external atmosphere and mine ventilation. fl.

Недостатками данного устройства вл ютс плохие аэродина.мические качества.The disadvantages of this device are poor aerodynamic characteristics.

Известно также устройство дл переключени струи воздуха в вентил ционных каналах , включающие несущую .металлоконструкцию , л ду, опорное устройство и нривод 2.It is also known a device for switching a stream of air in ventilation ducts, comprising a carrier metal structure, lu, a supporting device and a drive 2.

Недостатком данного устройства вл етс большое аэродинамическое сопротивление .The disadvantage of this device is a large aerodynamic drag.

Цель изобретени заключаетс в снижении аэродинамического сопротивлени устройства нутем главного поворота вентил ционной струи при переключении с одного вептил тора на другой.The purpose of the invention is to reduce the aerodynamic resistance of the device by driving the main rotation of the air flow when switching from one fan to another.

Поставленна цель достигаетс тем, что л да вынолнена выпуклой формы в виде части поверхности тора с возможностью врашегш вокруг осн, при этом ось вранлени л ды расположена в одной п:1оскости. с осью сопр жени венти.г| ционных каналов.This goal is achieved by the fact that l is filled with a convex shape as a part of the torus surface with the possibility of loosening around the axis, while the axis of the lying of the ice is located in one n: 1 plane. with the axis of the valve mate | channels.

На фиг. 1 - общий вид описываемого устройства в плане с разрезом по ос м каналов; па фиг. 2 - то же, дл случа , когда л да дл переключени вентил ционной струи находитс в противоположном положении; на фиг. 3 - продольный разрез но оси сонр жени каналов (фиг. 1) с частичным вырезом оболочки л дь|; на фиг. 4 - разрез А-А фиг. 3; на фиг. 5 - разрез Б-Б фиг. 3; на фиг. 6 -- разрез В-В фиг. 4 (с увеличением масштаба).FIG. 1 is a general view of the described device in plan with a cut along the axes of the channels; pas figs. 2 is the same for the case where it is in the opposite position for switching the air flow; in fig. 3 is a longitudinal section along the axis of the channel alignment (FIG. 1) with a partial cut-out of the shell l d | in fig. 4 - section A-A of FIG. 3; in fig. 5 is a section BB of FIG. 3; in fig. 6 shows a section bb of FIG. 4 (with increasing scale).

Claims

In order to switch the air flow from one fan to another, it has a supporting structure consisting of a grooved rim 1, a rotary axle 2 and connected to the rim 1 and the axle 2 of the frame 3, the sheath 4 attached to the supporting structure, the support rollers 5 and the bearing 6, on which the carrier 1 is supported by the rim 1 and the pivot pin 2. To rotate the supporting structure with a shell, an actuator is provided consisting of a drive winch 7 and a rope 8. The rope is wound on a winch of the drive winch, and the branches of the rope grasping the grooved rim are connected by a clip 9 attached to the rim 9. The device also has a common intake vent 10, fans 11 and 12, and air supply ducts 13 and 14 to them. The device operates as follows. When the fan is running 11 liters and for switching the air flow from one fan to another, it is in the position shown in FIG. 1, continuing the channel 13, l yes facilitates the smooth movement of air from the ventilation channel 10 to the wheel of the fan 11, thus blocking the channel 14 of the fan 12. To drive the air flow from one fan to another, the drive winch 7 turns on, the drum of which, rotating, winds the left branch and winds the right branch of the channel 8 (Fig. 4). The torque generated on the rim 1 is transmitted to the supporting structure, which is rotated by the action of this moment, supported by the rollers 5 and the trunnion 6, through an angle of 180 °, after which the driving winch is turned off. The 4-liter shell occupies the opposite position (Fig. 2), and, being the wall of the channel 14, facilitates the smooth movement of air from the ventilation channel 10 to the wheel of the fan 12, closing the channel 13 of the fan 11. Changing the direction of rotation of the driving drum the winch 7 can again switch the air flow to fan II. . The proposed method for switching the air flow will reduce the drag coefficient by 10–20 times in comparison with the known devices and increase the efficiency of the fan installation by 5–10%. Apparatus of the invention for switching a stream of air in ventilation ducts, including a non-earthen metal structure, l, a support device and a drive, characterized in that, in order to reduce aerodynamic resistance by smoothly turning the ventilation jet when switching from one fan to another, l Yes, it is made of a convex shape in the form of a part of the torus surface with the possibility of rotation around the axis, while the axis of rotation of the ice is located in the same plane with the axis of interface of the ventilation ducts. Sources of information taken into account in the examination: 1. USSR author's certificate number 126849, cl. E 21 F 1/08, 1959.

2. Babak, A.A., and others. “Elements of the shaft ventilation systems of the main ventilation, M., 1969, p. 122-130.

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