CN219453919U - Boiler exhaust device - Google Patents

Abstract

The utility model discloses a boiler exhaust device, which comprises a fixed-row expansion vessel, wherein an inlet of the fixed-row expansion vessel is communicated with an outlet of a boiler through a pipeline, a top pipe orifice of an exhaust pipe of the fixed-row expansion vessel is higher than the top surface of a factory building, a spiral part is arranged in the top of the exhaust pipe, a spray assembly is arranged in the exhaust pipe above the spiral part, the spray assembly is communicated with a cooling water pipe arranged outside the exhaust pipe, an electric valve is arranged on the cooling water pipe, a temperature sensor is arranged in the exhaust pipe above the spray assembly, a wind direction sensor is arranged outside the top end of the exhaust pipe, the temperature sensor and the wind direction sensor are electrically connected with the input end of a controller, and the output end of the controller is electrically connected with the electric valve.

Description

Boiler exhaust device

Technical field:

the utility model relates to the technical field of boiler exhaust, in particular to a boiler exhaust device.

The background technology is as follows:

in the operation process of a power plant, the periodic sewage of the boiler is subjected to depressurization and capacity expansion, the periodic sewage is subjected to secondary boiling under lower pressure to obtain exhaust steam, the power plant requirements cannot be met under normal conditions, the exhaust steam is directly discharged into the atmosphere from an outlet of an exhaust pipe, and a large amount of exhaust steam is discharged into the atmosphere for a long time, so that on one hand, the waste of water resources and heat energy is caused; on the other hand, the outlet design of the exhaust pipe is close to a color steel building such as a dry slag machine room, the outdoor air temperature is low in winter, water mist in exhaust steam is easy to condense into ice on the top surface of the plant, the plant is frequently crushed by accumulated ice, the potential safety hazard is large, the crushed plant is repaired again in spring every year, and the operation cost is high.

The utility model comprises the following steps:

the utility model aims to provide a boiler exhaust device, which solves the problems that the existing boiler exhaust frequently collapses a factory building, water resources and heat energy are wasted due to the fact that water mist and ice are accumulated in the exhaust gas of the existing boiler in winter.

The utility model is implemented by the following technical scheme: the utility model provides a boiler exhaust apparatus, its includes decides row's expansion vessel, decide row's expansion vessel's import and the export of boiler through the pipeline intercommunication, decide row's expansion vessel's blast pipe's top mouth of pipe is higher than the factory building top be equipped with spiral part in the blast pipe top be equipped with spray assembly in the blast pipe of spiral part top spray assembly intercommunication has the setting and be in the outer condenser tube of blast pipe be equipped with the motorised valve on the condenser tube spray assembly top be equipped with temperature sensor in the blast pipe of top be equipped with wind direction sensor the outside on blast pipe top is equipped with wind direction sensor, temperature sensor wind direction sensor all is connected with the input electricity of controller, the output of controller with the motorised valve electricity is connected.

Preferably, the spraying assembly comprises an annular pipe and an atomizing nozzle, wherein the annular pipe is fixed in the exhaust pipe above the spiral part along the inner wall, the annular pipe is communicated with the cooling water pipe penetrating through the wall of the exhaust pipe, and a plurality of atomizing nozzles are fixed on the annular pipe.

Preferably, the spraying direction of the atomizing nozzle is opposite to the rotation direction of the spiral member.

Preferably, the top pipe orifice of the exhaust pipe is higher than the top surface of the factory building by more than 5 meters.

The utility model has the advantages that: firstly, the utility model is provided with the fixed-row expansion container, the top pipe orifice of the exhaust pipe of the fixed-row expansion container is higher than the top surface of a factory building by more than 5 meters, the exhaust gas is ensured to be far away from the factory building, and the exhaust gas is blown away by wind, so that the phenomenon that water vapor is cooled down and accumulated on the top surface of the factory building is avoided, a spiral part is fixed in the top of the exhaust pipe, a spray assembly is arranged in the exhaust pipe above the spiral part, the spray assembly is communicated with a cooling water pipe, the exhaust gas is fully mixed with cooling water sprayed out by the spray assembly through spiral rising of the spiral part, the exhaust gas is cooled down by the cooling water, most of the exhaust gas is condensed into the fixed-row expansion container to be adhered to the wall for backflow, the content of spent gas is reduced, the situation of icing is prevented, and the condensed water flowing back into the fixed-row expansion container can be used in the place where the factory building needs hot water, and the water resource and the heat energy waste are reduced.

The second, the utility model is equipped with the motorised valve on the cooling water pipe, is equipped with the temperature sensor in the blast pipe above the atomizing nozzle, is equipped with the wind direction sensor in the outside on blast pipe top, temperature sensor, wind direction sensor all are connected with the input of controller electricity, the output of controller is connected with the motorised valve electricity, detect the wind direction around the blast pipe in real time through the wind direction sensor to transmit the signal to the controller in real time, control the switching of motorised valve through the controller, detect the temperature of exhaust steam in the blast pipe in real time through temperature sensor, and transmit the signal to the controller in real time, control the switching of motorised valve through the controller, the operation is intelligent, cool according to actual conditions.

Description of the drawings:

in order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic view of A-A of fig. 1.

Fig. 3 is a control schematic of the present utility model.

The components in the drawings are marked as follows: the constant-row expansion vessel 1, the boiler 2, the exhaust pipe 3, the factory building 4, the spiral part 5, the spray assembly 6, the annular pipe 6.1, the atomizing nozzle 6.2, the cooling water pipe 7, the overflow pipeline 8, the electric valve 9, the temperature sensor 10, the wind direction sensor 11 and the controller 12.

The specific embodiment is as follows:

the following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "center," "upper," "lower," "front," "rear," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown in figures 1-3, the boiler exhaust device comprises a fixed-row expansion vessel 1, wherein the fixed-row expansion vessel 1 is used for reducing pressure and expanding capacity of sewage of a boiler 2, an inlet of the fixed-row expansion vessel 1 is communicated with an outlet of the boiler 2 through a pipeline, an exhaust pipe 3 which is vertically arranged is communicated with an exhaust port of the fixed-row expansion vessel 1, a top pipe orifice of the exhaust pipe 3 is higher than the top surface of a factory building 4 by more than 5 meters, exhaust gas away from the factory building 4 is ensured, exhaust gas is blown away by wind, water vapor is prevented from being cooled, ice is accumulated on the top surface of the factory building 4, a spiral part 5 is fixed in the top of the exhaust pipe 3, a spray assembly 6 is arranged in the exhaust pipe 3 above the spiral part 5, the spray assembly 6 is communicated with a cooling water pipe 7 arranged outside the exhaust pipe 3, the exhaust gas is fully mixed with cooling water sprayed out of the spray assembly 6 by spiral rising of the spiral part 5, the cooling water is utilized for cooling the exhaust gas, most exhaust steam is condensed into the fixed-row expansion vessel 1 to adhere to the wall and flow back, so that the steam lack content is reduced, the icing condition is prevented, the side wall of the fixed-row expansion vessel 1 is communicated with an overflow pipeline 8, the condensed water is discharged through the overflow pipeline 8 and used in a place where hot water is needed in a factory building 4 after absorbing heat, water resources and heat energy waste are reduced, a spraying assembly 6 comprises an annular pipe 6.1 and an atomizing nozzle 6.2, the annular pipe 6.1 is fixed in the exhaust pipe 3 above a spiral part 5 along the inner wall, the annular pipe 6.1 is communicated with a cooling water pipe 7 penetrating through the wall of the exhaust pipe 3, in the embodiment, four atomizing nozzles 6.2 are fixed on the annular pipe 6.1, the spraying direction of the atomizing nozzles 6.2 is opposite to the rotation direction of the spiral part 5, so that the exhaust steam and the cooling water are in bidirectional convection, the atomized cooling water and the exhaust steam are fully mixed, the cooling effect is improved, and the effect of the condensation steam is enhanced; an electric valve 9 is arranged on the cooling water pipe 7, the inside of the exhaust pipe 3 above the atomizing nozzle 6.2 is provided with a temperature sensor 10, the temperature sensor 10 is used for detecting the temperature of exhaust steam in the exhaust pipe 3, the outside of the top end of the exhaust pipe 3 is provided with a wind direction sensor 11, the wind direction sensor 11 is used for detecting the wind direction around the exhaust pipe 3, the temperature sensor 10 and the wind direction sensor 11 are electrically connected with the input end of a controller 12, the output end of the controller 12 is electrically connected with an electric valve 9, the wind direction around the exhaust pipe 3 is detected in real time through the wind direction sensor 11, signals are transmitted to the controller 12 in real time, the electric valve 9 is controlled to be opened and closed through the controller 12, the temperature of the exhaust steam in the exhaust pipe 3 is detected in real time through the temperature sensor 10, and the signals are transmitted to the controller 12 in real time, and the electric valve 9 is controlled to be opened and closed through the controller 12.

Working principle: the exhaust steam generated by the fixed-row expansion device 1 enters the exhaust pipe 3, the exhaust steam is discharged into the atmosphere after passing through the spiral part 5, when wind blows from the exhaust pipe 3 to the plant 4 in winter, the wind direction sensor 11 detects the set wind direction, signals are transmitted to the controller 12 in real time, the electric valve 9 is controlled to be opened by the controller 12, cooling water enters the annular pipe 6.1 through the cooling water pipe 7, cooling water in the annular pipe 6.1 is sprayed out through the atomizing nozzle 6.2 and meets the exhaust steam which is screwed out through the spiral part 5, so that the exhaust steam is sufficiently cooled and condensed, the exhaust steam is prevented from being discharged from the top of the exhaust pipe 3, and water mist in the exhaust steam is prevented from condensing into ice on the top surface of the plant 4 to crush the plant 4 in winter; or when the temperature sensor 10 in the exhaust pipe 3 detects that the exhaust steam temperature is higher than a set value, the temperature sensor 10 transmits signals to the controller 12, the electric valve 9 is controlled to be opened by the controller 12, cooling water enters the annular pipe 6.1 through the cooling water pipe 7, cooling water in the annular pipe 6.1 is sprayed out through the atomization nozzle 6.2 and meets exhaust steam which is screwed out through the spiral part 5, the cooling water absorbs heat of the exhaust steam, the heat of the exhaust steam is fully cooled and condensed, the exhaust steam is prevented from being discharged from the top of the exhaust pipe 3, and water resources and heat energy waste are reduced.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (4)

1. The utility model provides a boiler exhaust apparatus, its includes decides row's expansion vessel, decide row's expansion vessel's import and boiler's export through the pipeline intercommunication, its characterized in that, decide row's expansion vessel's blast pipe's top mouth of pipe is higher than the factory building be equipped with the spiral part in the blast pipe top be equipped with in the blast pipe of spiral part top spray the subassembly intercommunication has the setting and is in the outer condenser tube of blast pipe be equipped with the motorised valve on the condenser tube spray the subassembly top be equipped with temperature sensor in the blast pipe the outside on blast pipe top is equipped with wind direction sensor, temperature sensor wind direction sensor all is connected with the input electricity of controller, the output of controller with the motorised valve electricity is connected.

2. A boiler exhaust apparatus according to claim 1, wherein the spray assembly comprises an annular pipe and an atomizing nozzle, the annular pipe is fixed along an inner wall in the exhaust pipe above the spiral member, the annular pipe is communicated with the cooling water pipe passing through a wall of the exhaust pipe, and a plurality of the atomizing nozzles are fixed on the annular pipe.

3. A boiler exhaust apparatus according to claim 2, wherein the spray direction of the atomizing nozzle is disposed opposite to the direction of rotation of the spiral member.

4. A boiler exhaust apparatus according to claim 1, wherein the top nozzle of the exhaust pipe is above the top surface of the plant by more than 5 meters.