RU165218U1 - VENTILATION UNIT - Google Patents

Abstract

The ventilation unit is intended for ventilation and air conditioning in rooms with increased safety requirements, as well as for ventilation devices with increased reliability requirements, mainly for gas pumping units. The ventilation unit is characterized in that it is placed in a single housing, contains two output manifolds for air supply, and contains three air supply ventilation units. The outputs of the two ventilation units are connected through valves to each of their output manifolds, and the output of the third ventilation unit is connected via valves to both output manifolds. Air handling units contain air conditioning device (s). The exhaust manifolds for air supply contain valves at the outlet. The unit provides ventilation and air conditioning while simultaneously sheltering the gas pumping unit and the casing of the gas turbine engine, has high reliability.

Description

The utility model relates to ventilation equipment, and more particularly to supply ventilation devices for ventilation and air conditioning, in particular for ventilation and air conditioning in rooms with increased safety requirements, as well as ventilation devices with increased reliability requirements, mainly for gas pumping units.

At present, gas pumping units located in prefabricated buildings - shelters (hangars) and using gas turbine engines (installations) located in a special heat and sound insulating casing (container, compartment) are widely used. Such an aggregate is described, for example, in the patent for utility model RU No. 23639 (published on June 27, 2002). In such units, there is a danger of explosion and fire due to gas leaks that can occur in the shelter and under the hood of the gas turbine engine. In this regard, safety standards, for example, WFD 39-1.8-055-2002 of OAO Gazprom, provide for forced ventilation of the shelter of the gas pumping unit with three times air exchange per hour and forced ventilation (purge) of the casing of the gas turbine engine with eight times air exchange per hour. Moreover, the same document provides for the use for ventilation of the shelter of a supply ventilation unit with a backup fan. The air supplied to the shelter and under the casing must be cleaned. In addition, the equipment of the gas pumping unit must operate at positive temperatures. In the Far North, the use of a water heating system is associated with the problem of “defrosting” the shelter heating system, in this regard, they use the combination of ventilation with shelter heating, for which the air in the ventilation units is heated. At the same time, there is still a risk of cooling the shelter, for example, when emergency ventilation is triggered. To prepare the gas pumping unit for start-up, it is necessary to purge the casing of the gas turbine engine with warm air.

Currently, the aforementioned tasks of ventilation and air conditioning (hereinafter referred to as conditioning refers to the preparation of air to the specified parameters and maintaining the specified air parameters, in particular temperature, cleanliness, humidity, etc.) in the shelter of the gas pumping unit and under the casing of the gas turbine engine They are solved by using two separate ventilation units combining the functions of ventilation and air conditioning.

Such installations include, for example, the modular air-heating gas unit according to the utility model patent RU No. 100196 (published on 12/10/2010) containing a box-type prefabricated case, main and backup fans, a heating unit, a filter that is used in the room ventilation system . In such an aggregate, the heating unit and filter are essentially air conditioning devices; the unit can operate with the heating unit turned off. Its disadvantage is that the possibility of repairing a failed fan during the operation of another fan is excluded, since the fans are located in a common unit, and there is also no backup heating unit, which reduces the reliability of the device.

These shortcomings were eliminated in the Ventilation and Heating System according to the patent for utility model RU No. 126809 (published on April 10, 2013) of the applicant, containing the main and backup fans and the main and backup heat generators, made independently of each other, filters, housed in one housing. The system is designed for forced ventilation and air conditioning of easily assembled shelters of gas pumping units. However, this system, like the above unit, cannot be used simultaneously for ventilation and air conditioning both in the shelter and under the casing.

As already mentioned, a separate installation is used for ventilation and air conditioning under the casing, and it is usually not equipped with backup equipment to reduce the cost of the gas pumping unit. Failure or malfunction of the ventilation and air conditioning installation under the casing of the gas turbine engine entails the inability to start the gas pumping unit.

Thus, at present, there is an acute problem of creating such a device that would simultaneously provide ventilation and air conditioning for the shelter of the gas pumping unit and the casing of the gas turbine engine and have high reliability.

The authors were faced with the task of creating a reliable design of the ventilation unit, providing ventilation, as well as air conditioning, at the same time sheltering the gas pumping unit and the casing of the gas turbine engine. The proposed device ventilation unit is intended primarily for a gas pumping unit, however, this does not limit its use for other objects and premises.

To achieve the specified technical result, the ventilation unit is located in a single housing, contains two output manifolds for air supply, contains three air supply ventilation units, moreover, the outputs of two ventilation units are connected through valves to each with its output manifold for air supply of the unit, and the output of the third ventilation unit connected via valves to both outlet manifolds. For air conditioning, ventilation units also include air conditioning device (s).

It is advisable to install valves at the outlet of both output manifolds to supply air to the unit.

The unit operates as follows.

In the normal mode, two air supply ventilation units, connected through valves to each with its output manifold for supplying air to the unit, supply prepared (heated and / or cleaned) air conditioning devices through the output manifolds, one to the shelter of the gas pumping unit, the other under the casing of the gas turbine engine, the valves at the outlet of these ventilation units are open, the valves of both output manifolds are open. The third ventilation unit is not working and is in reserve, both of its outlet valves, with which it is connected to the outlet manifolds for supplying air to the unit, are closed.

In the event of an accident or a scheduled stop for repairs and preventive maintenance of one of the first two ventilation units, the third ventilation unit is turned on, and its valve opens, through which it is connected to the output manifold to which the stopped ventilation unit is connected. Its other valve remains closed, the valve of the stopped ventilation unit closes. Air is still supplied both in the shelter and under the casing.

The third ventilation unit is put into operation when emergency exhaust ventilation of the shelter of the gas pumping unit is triggered, while its valve opens, through which it is connected to the outlet manifold that supplies air to the shelter, its other valve is closed. Thus, two ventilation units are supplied to the shelter, preventing cooling of the shelter. If two installations are not enough, air from all three ventilation units can be directed into the shelter by opening all their valves at the outlet, while the valve of the outlet manifold supplying air under the casing is closed.

Similarly, if necessary, you can direct air from two or three ventilation units under the casing of a gas turbine engine.

Thus, such a unit alone provides ventilation and air conditioning of the gas pumping unit, there is no need for two different ventilation units, while it provides reliable ventilation and shelters and a casing.

A person skilled in the art understands that the proposed ventilation unit design allows the use of other air flow distribution schemes, which makes this device multifunctional, reliability is ensured by the presence of a third, backup, ventilation unit and execution of valves at the outlet of the ventilation units and valves of the output manifolds. The use of different-purpose air conditioning devices and their combinations also extends the functionality of such an unit. Due to this, such a ventilation unit can be widely used in various fields.

The implementation of the ventilation unit in a single housing, with two output manifolds for air supply, containing three air supply units, the outputs of two of which are connected through valves to each with its output manifold for air supply of the unit, and the output of the third ventilation unit is connected through valves to both output manifolds for air supply to the unit, the implementation of ventilation units with air conditioning devices, the presence of valves at the outlet of the output manifolds for air supply ha, ensures ventilation and air conditioning unit in such a shelter pumping unit and the casing of the turbomachine, ensures the reliability of the ventilating unit.

The combination of these essential features allows you to create a reliable design of the ventilation unit, providing ventilation and air conditioning while simultaneously sheltering the gas pumping unit and the casing of the gas turbine engine.

The proposed design is illustrated in the drawing.

The figure shows the pneumatic diagram of the unit - one of the specific examples of the embodiment of the utility model, where 1 is the ventilation unit, 2 is the output manifold for air supply of the unit 1, 3 is the ventilation unit, 4 is the valve at the outlet of the ventilation unit 3, 5 is the filter of the ventilation unit 3, 6 - fan of the ventilation unit 3, 7 - device for heating the air of the ventilation unit 3, which in the shown specific embodiment of the utility model is a gas direct heating air heater, 8 - valve outlet of the second collector 2, 9 - a single housing (block box, block container) in which the ventilation unit 1, 10 - the fuel gas preparation system of the air heating devices is located 7, 11 - the automatic control system of the ventilation unit 1, 12 - the inlet valve of the ventilation unit 3. In the shown example, the air heating device 7 (air conditioning device) is installed after the fan 6, which provides better air heating efficiency, the filter 5 (air conditioning device) is installed in front of the fan 6, which increases ESOURCES the fan 6 and the air heating device 7, however, the ventilation unit 3, the air conditioning device can be installed in a different order. The ventilation unit 3 can be equipped with several filters 5, the ventilation unit 3 can be equipped with other air conditioning devices and have a different combination thereof.

One skilled in the art will recognize that any known suitable filtering device may be used as a filter. As a device for heating the air, any known suitable device can also be used, for example, direct heating air heaters, recuperative air heaters, devices that heat air using a heat carrier (steam, water). As the valves of the ventilation unit and the output manifolds, any known and suitable device can also be used - an air damper, a gate device, a rotary leaf, a louvre device, etc. Air from the output manifolds can be supplied: to the shelter directly and / or through the duct (s); under the casing, air is usually supplied through the duct (s). The ventilation unit, its installations and devices can be equipped with means of regulation, control and automation. Air handling units may contain fans or air conditioning units of different or identical performance. The unit body may have a service compartment. The unit may contain a common air intake compartment for all three air handling units, the unit may be equipped with a filter common to all three air handling units. The unit can be made in block execution. The unit can be made in a modular design. For air conditioning in the ventilation units of the unit can also be used devices to maintain the necessary humidity, coolers and other air conditioning devices.

The claimed technical solution of the ventilation unit can be implemented in industrial production using standard equipment, modern materials and technologies. The unit is assembled from standard heat engineering, electrical, ventilation equipment and devices, standard means of regulation, control and automation are used, in its manufacture standard metal structures, metal rolling are used.

The authors developed the design of the ventilation unit, which was successfully implemented in the block of the ventilation and heating system type SVO-400MP05-02.

Claims (3)

1. The ventilation unit, characterized in that it is housed in a single housing, contains two output manifolds for supplying air, contains three air supply ventilation units, moreover, the outputs of two ventilation units are connected through valves to each with its output manifold, and the output of the third ventilation installation is connected through valves with both outlet manifolds. 2. The ventilation unit according to claim 1, characterized in that the ventilation unit comprises an air conditioning device (s). 3. The ventilation unit according to claim 1, characterized in that the output manifolds for supplying air contain valves at the outlet.

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