CN219474347U - High-efficiency waste heat recovery device for coal-electricity enterprises - Google Patents

Abstract

The utility model relates to the technical field of coal-to-electricity waste heat recovery, in particular to a high-efficiency waste heat recovery device for coal-to-electricity enterprises, which comprises a heat exchange box, wherein two ends of the heat exchange box are respectively connected with an air inlet pipe and an air outlet pipe, openings of the air inlet pipe and the air outlet pipe are respectively provided with a filter screen, a circulating plate and a screen plate are arranged in an inner cavity of the heat exchange box, a cold water inlet pipe and a hot water outlet pipe are connected to the heat exchange box, and an insulating layer is arranged on the outer wall of the heat exchange box. Through inlay on the heat transfer box and establish the replacement heat pipe to set up the circulation board in the heat transfer box, set up the heat preservation at the outer wall of heat transfer box simultaneously, improved the recovery unit of coal electric enterprise's high temperature vapor waste heat to waste heat recovery's efficiency, through set up cylinder electric adjustment elevation structure in the bottom of heat transfer box, realized can highly adjusting wholly to the height of vapor discharge pipe, improved the application scope of coal electric enterprise's high temperature vapor waste heat recovery unit.

Description

High-efficiency waste heat recovery device for coal-electricity enterprises

Technical Field

The utility model relates to the technical field of coal-electricity waste heat recovery, in particular to a high-efficiency waste heat recovery device for coal-electricity enterprises.

Background

At present, with the development of society, the urban rate is continuously improved, the demand for electric energy is also higher, the development of thermal power technology represented by coal power is also faster, the thermal power generation process is as follows, fuel is transported to a power plant, after being transported and processed, the fuel is sent to a boiler for combustion, chemical energy in the fuel is converted into heat energy and is transferred to water in the boiler, the water is converted into high-temperature and high-pressure steam, the superheated steam with higher pressure and temperature is sent to a steam turbine through a pipeline, and the steam turbine rotates to generate electric power.

In order to meet the demand of energy conservation and environmental protection of corresponding countries in recent years, waste heat recovery of various devices in the coal-to-electricity power generation process is increasingly emphasized, and in the energy consumption devices of the put-into-operation industrial enterprises, the technology of recovering sensible heat and latent heat which are not reasonably utilized in the original design is adopted, wherein the recovery of the waste heat of high-temperature steam is mainly used.

At present, the existing recovery device of the high-temperature vapor waste heat of the coal-electricity enterprises is low in waste heat recovery efficiency, and most of the existing recovery device of the high-temperature vapor waste heat of the coal-electricity enterprises cannot be used for overall high adjustment of the height of a water vapor discharge pipe, so that the application range of the recovery device of the high-temperature vapor waste heat of the coal-electricity enterprises is reduced.

For example, chinese patent publication No. CN217155038U discloses a high-efficient waste heat recovery device for coal power enterprises, which relates to the field of thermal power generation, and includes a condenser, wherein a cooling cavity is formed inside the condenser, a condenser pipe is fixedly arranged inside the cooling cavity, sufficient circulating cooling water is introduced into the cooling cavity, an air inlet nozzle for inputting high-temperature steam, a return nozzle for recycling liquid water and an air outlet nozzle for discharging waste gas are formed inside the condenser pipe, the air outlet nozzle is vertically arranged along the gravity direction, an automatic baffle for covering the air outlet nozzle is movably arranged on the outer wall of the air outlet nozzle, and a sundry filter screen is detachably arranged on the inner wall of the air outlet nozzle.

According to the scheme disclosed in the prior patent document, the recovery device of the high-temperature vapor waste heat of the coal-to-electricity enterprise has lower efficiency for waste heat recovery, and in addition, most of the recovery devices of the high-temperature vapor waste heat of the coal-to-electricity enterprise cannot be subjected to overall high adjustment aiming at the height of the water vapor discharge pipe, so that the application range is reduced, and the problem is ubiquitous and needs to be improved urgently.

Disclosure of Invention

The utility model aims to provide a high-efficiency waste heat recovery device for a coal-electricity enterprise, which solves the problems that the recovery device of high-temperature steam waste heat of the coal-electricity enterprise in the prior art has lower efficiency for waste heat recovery, and the recovery device of high-temperature steam waste heat of the coal-electricity enterprise mostly cannot be used for carrying out overall high adjustment on the height of a steam discharge pipe, so that the application range is reduced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a coal power enterprise is with high-efficient waste heat recovery unit, includes the heat exchange box, the both ends of heat exchange box are connected with intake pipe and outlet duct respectively, the opening part of intake pipe and outlet duct all is provided with the filter screen.

Preferably, a circulating plate and a screen plate are arranged in the inner cavity of the heat exchange box, a cold water inlet pipe and a hot water outlet pipe are connected to the heat exchange box, and an insulating layer is arranged on the outer wall of the heat exchange box.

Preferably, a heat exchange tube is embedded in the outer wall of the front end of the heat exchange box, and two ends of the heat exchange tube are respectively connected with a cold water inlet tube and a hot water outlet tube.

Preferably, the heat exchange box is internally provided with a hollow cavity, and the number of the screen plates is two and the screen plates are respectively arranged at the openings at the two ends of the hollow cavity of the heat exchange box.

Preferably, the number of the circulating plates is five and the circulating plates are respectively arranged in the hollow cavity of the heat exchange box in an up-down staggered mode.

Preferably, the bottom of heat exchange box is equipped with cylinder and sleeve pipe, the telescopic link of cylinder is equipped with the connecting plate, the slip joint has the slide in the sleeve pipe, the connecting plate is fixed with the slide and is set up, the back end installation of heat exchange box is equipped with the battery.

Preferably, the lower end of the sliding plate is provided with a foot seat, and the lower end of the foot seat is provided with an anti-slip pad.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the heat exchange box is internally embedded with the replacement heat pipe, the circulation plate is arranged in the heat exchange box, and the heat insulation layer is arranged on the outer wall of the heat exchange box, so that the recovery efficiency of the recovery device of the waste heat of the high-temperature vapor of the coal power enterprise to the waste heat recovery is improved.

According to the utility model, the air cylinder electric adjusting lifting structure is arranged at the bottom of the heat exchange box, so that the integral height adjustment can be realized aiming at the height of the water vapor discharge pipe, and the application range of the water vapor waste heat recovery device of a coal-electricity enterprise is further improved.

Drawings

FIG. 1 is a perspective view of the overall structure of the present utility model;

FIG. 2 is a front cross-sectional view of the overall structure of the present utility model;

FIG. 3 is a schematic top view of the overall structure of the present utility model;

fig. 4 is an enlarged view of W in fig. 2 according to the present utility model.

In the figure: 1 heat exchange box, 111 heat preservation, 10 heat exchange tube, 11 cold water inlet tube, 12 hot water outlet tube, 13 screen board, 14 circulation board, 2 battery, 3 intake pipe, 31 filter screen, 4 outlet pipe, 5 cylinder, 51 connecting plate, 6 sleeve pipe, 61 slide, 7 foot rest, 71 slipmat.

Description of the embodiments

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.

Examples

Referring to fig. 1 to 4, an efficient waste heat recovery device for a coal power enterprise in the drawings comprises a heat exchange box 1, wherein two ends of the heat exchange box 1 are respectively connected with an air inlet pipe 3 and an air outlet pipe 4, and openings of the air inlet pipe 3 and the air outlet pipe 4 are provided with a filter screen 31, so that external impurities are prevented from entering the heat exchange box 1 when the device is not used by the filter screen 31.

The inner cavity of the heat exchange box 1 is provided with a circulating plate 14 and a screen plate 13, the heat exchange box 1 is connected with a cold water inlet pipe 11 and a hot water outlet pipe 12, the outer wall of the heat exchange box 1 is adhered with a heat preservation layer 111, the heat preservation layer 111 is made of polystyrene foam, and the heat exchange box is light in weight, has excellent heat preservation and avoids heat dissipation.

The heat exchange tube 10 is embedded to be provided with in the front end outer wall of heat exchange box 1, and the both ends of heat exchange tube 10 are connected with cold water inlet tube 11 and hot water exit tube 12 respectively, and heat exchange tube 10 and heat exchange box 1 wholly adopt the aluminum alloy material, have good thermal conductivity, improve the heat transfer heating efficiency to cold water.

The heat exchange box 1 is internally provided with a hollow cavity, the number of the screen plates 13 is two, the screen plates 13 are respectively arranged at the openings at the two ends of the hollow cavity of the heat exchange box 1, and the screen plates 13 realize that high-temperature steam smoothly enters the heat exchange box 1.

The number of the circulation plates 14 is five and the circulation plates are respectively arranged in the hollow cavity of the heat exchange box 1 in an up-down staggered way, so that S-shaped flow of high-temperature steam in the heat exchange box 1 is realized, the flow time of the high-temperature steam in the heat exchange box 1 is prolonged, and the heat exchange and temperature rising efficiency of cold water in the heat exchange tube 10 is further improved.

The bottom of heat exchange box 1 is equipped with cylinder 5 and sleeve pipe 6, and the telescopic link welding of cylinder 5 has connecting plate 51, and the slip has slide 61 in the sleeve pipe 6, and connecting plate 51 and slide 61 fixed welding, the back end installation of heat exchange box 1 are equipped with battery 2, and battery 2 can supply power to cylinder 5, and battery 2 can charge, convenient to use.

The lower end of the sliding plate 61 is welded with the foot seat 7, and the section of the foot seat 7 is of a trapezoid structure, so that the overall supporting stability of the heat exchange box 1 is improved.

The lower extreme of foot rest 7 bonds and has slipmat 71, and slipmat 71 wholly is damping silica gel material, and its lower extreme has anti-skidding damping arch, has improved the placing skid resistance to heat exchange box 1.

When used in this embodiment: connecting a water vapor discharge pipe on the equipment with an air inlet pipe 3 of a heat exchange box 1, opening valves preset on the water vapor discharge pipe, simultaneously opening valves preset on a cold water inlet pipe 11 and a hot water outlet pipe 12, enabling high-temperature water vapor to enter the heat exchange box 1, enabling the high-temperature water vapor to flow along a circulating plate 14 in an S shape, enabling the cold water to be input into the heat exchange pipe 10 through the cold water inlet pipe 11, enabling the cold water to be heated and warmed by the high-temperature water vapor flowing in the heat exchange box 1 at high efficiency, enabling the warmed hot water to be input into needed hot water supply equipment through the hot water outlet pipe 12, enabling the cooled low-temperature water vapor to be discharged through an air outlet pipe 4,

the operation improves the efficiency of the recovery device of the high-temperature vapor waste heat of the coal-electricity enterprises on waste heat recovery.

In addition, when the water vapor discharge pipe on the equipment is connected with the air inlet pipe 3 of the heat exchange box 1, if the current water vapor discharge pipe is higher, the air cylinder 5 can be started, the telescopic rod of the air cylinder can extend downwards, the sliding plate 61 is driven to slide downwards through the connecting plate 51, the whole heat exchange box 1 can be lifted upwards, when the air inlet pipe 3 on the heat exchange box 1 is lifted to be level with the current water vapor discharge pipe on the equipment, the air cylinder 5 is stopped, then the water vapor discharge pipe can be connected with the air inlet pipe 3,

the operation realizes the overall height adjustment aiming at the height of the water vapor discharge pipe, thereby further improving the application range of the water vapor waste heat recovery device of coal-electricity enterprises.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a coal electric enterprise is with high-efficient waste heat recovery unit which characterized in that includes:

the heat exchange box (1), both ends of heat exchange box (1) are connected with intake pipe (3) and outlet duct (4) respectively, the opening part of intake pipe (3) and outlet duct (4) all is provided with filter screen (31).

2. The efficient waste heat recovery device for coal power enterprises according to claim 1, wherein: the inner cavity of the heat exchange box (1) is provided with a circulating plate (14) and a screen plate (13), the heat exchange box (1) is connected with a cold water inlet pipe (11) and a hot water outlet pipe (12), and the outer wall of the heat exchange box (1) is provided with an insulating layer (111).

3. The efficient waste heat recovery device for coal power enterprises according to claim 2, wherein: the heat exchange box is characterized in that a heat exchange tube (10) is embedded in the outer wall of the front end of the heat exchange box (1), and two ends of the heat exchange tube (10) are respectively connected with a cold water inlet tube (11) and a hot water outlet tube (12).

4. The efficient waste heat recovery device for coal power enterprises according to claim 2, wherein: the heat exchange box (1) is internally provided with a hollow cavity, and the number of the screen plates (13) is two and the screen plates are respectively arranged at the openings at the two ends of the hollow cavity of the heat exchange box (1).

5. The efficient waste heat recovery device for coal power enterprises according to claim 2, wherein: the number of the circulating plates (14) is five and the circulating plates are respectively arranged in the hollow cavity of the heat exchange box (1) in an up-down staggered mode.

6. The efficient waste heat recovery device for coal power enterprises according to claim 1, wherein: the bottom of heat exchange box (1) is equipped with cylinder (5) and sleeve pipe (6), the telescopic link of cylinder (5) is equipped with connecting plate (51), sliding connection has slide (61) in sleeve pipe (6), connecting plate (51) are fixed with slide (61) and are set up, battery (2) are installed to the back end of heat exchange box (1).

7. The efficient waste heat recovery device for coal power enterprises according to claim 6, wherein: the lower extreme of slide (61) is equipped with foot rest (7), the lower extreme of foot rest (7) is equipped with slipmat (71).