CN210518157U

CN210518157U - Dampproof device of furnace induced draft fan high-voltage inverter

Info

Publication number: CN210518157U
Application number: CN201921897377.6U
Authority: CN
Inventors: 袁世伟; 朱建华; 任加权
Original assignee: Hangzhou Zhixing Thermal Power Co ltd
Current assignee: Hangzhou Zhixing Thermal Power Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-05-12
Anticipated expiration: 2029-11-05

Abstract

The utility model belongs to the technical field of boiler equipment technique and specifically relates to a dampproof device of stove draught fan high-voltage inverter is related to. Prior art has most moisture and the converter emergence reaction earlier, then just by the dry dehumidification of drier, can cause the influence to the converter, and this scheme includes the cabinet body, be equipped with air intake and air outlet on the cabinet body, be equipped with the exhaust fan that is used for the internal circulation of air of cabinet on the air outlet, the air intake sets up on cabinet body top, the air outlet sets up in cabinet body bottom, air intake department is equipped with the dry section that is used for the filterable filter segment of air inlet, is used for the linkage segment of moisture preliminary treatment and is used for the air inlet in proper order along the air flow direction. This scheme can dehumidify the air that gets into in the electric appliance cabinet, reduces the moisture and takes place the condition appearance that reacts with the converter earlier, reduces the influence of moisture to the converter.

Description

Dampproof device of furnace induced draft fan high-voltage inverter

Technical Field

The utility model belongs to the technical field of boiler equipment technique and specifically relates to a dampproof device of stove draught fan high-voltage inverter is related to.

Background

The furnace induced draft fan is an important auxiliary machine of a thermal power plant, the furnace induced draft fan is mechanical equipment which increases air pressure and discharges air by means of mechanical energy input by a motor, the working principle of the furnace induced draft fan is basically the same as that of a turbine compressor, only because the air flow rate is low, the pressure change is not large, the change of the specific volume of the air is generally not required to be considered, and the air is treated as incompressible fluid. The stove draught fan is the adjustable axial-flow fan of quiet leaf or movable vane generally, utilizes the rotatory lifting power that produces of impeller, introduces the flue gas in the boiler desulfurization island or chimney along the axial, needs to use high-voltage inverter to carry out the control of speed or change to the stove draught fan in the use.

The traditional Chinese patent with the publication number of CN207911176U discloses a moisture-proof device for a furnace induced draft fan high-voltage frequency converter, which comprises a plurality of desiccant storage boxes, wherein fixing pieces are fixed on the outer walls of the desiccant storage boxes, a plurality of welding points are arranged on the fixing pieces, and the fixing pieces are respectively spot-welded on the inner wall of a shell through the welding points.

But when above-mentioned prior art humid air got into the regulator cubicle, still have most moisture to react with the converter earlier, then just by the dry dehumidification of drier, the event still can cause the influence to the converter, the moisture probably causes the converter short circuit when serious, the event need design a stove draught fan high-voltage inverter's dampproof device, can dehumidify the air that gets into in the electric appliance cabinet, the condition that reduces the moisture and react with the converter earlier appears, reduce the influence of moisture to the converter.

Disclosure of Invention

The utility model aims at providing a furnace draught fan high-voltage inverter's dampproof device can dehumidify the air that gets into in the electrical apparatus cabinet, reduces the moisture and appears with the condition that the converter takes place to react earlier, reduces the influence of moisture to the converter.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a dampproof device of stove draught fan high-voltage inverter, includes the cabinet body, be equipped with air intake and air outlet on the cabinet body, be equipped with the exhaust fan that is used for the internal circulation of air of cabinet on the air outlet, the air intake sets up on cabinet body top, the air outlet sets up in cabinet body bottom, air intake department is equipped with in proper order along the air flow direction and is used for the filterable filter segment of air inlet, is used for the linkage segment of moisture preliminary treatment and is used for the dry section of air inlet.

By adopting the technical scheme, fresh air enters from the air inlet at the top end of the cabinet body, and compared with the air inlets arranged at other positions, the higher the horizontal height is, the lower the humidity in the air is, so that the air is taken from the top end of the cabinet body, and the moisture content in the inlet air is reduced; the air outlet is arranged at the bottom end of the cabinet body, so that air can circulate up and down in the cabinet body, the air flow in the cabinet body is enhanced, and the moisture-proof effect is improved; air intake department is equipped with the changeover portion, linkage segment and dry section, thereby the air that makes the entering can be filtered and removed dust, it causes the condition of harm to the internal high-voltage inverter of cabinet to reduce great granule dust to take place, can also carry out the preliminary treatment of moisture to the air that gets into, reduce the moisture content in the air, at last through the dry section, carry out thorough absorption drying to the moisture in the air inlet, thereby realize dehumidifying the air that gets into in the electrical cabinet, the condition that reduces the moisture and take place the reaction earlier appears with the converter, reduce the influence of moisture to the converter.

The utility model discloses further set up to: the filter section comprises a fixing frame arranged at the air inlet, an insertion opening is formed in the fixing frame, and a filter screen is connected to the fixing frame in a sliding mode through the insertion opening.

Through adopting above-mentioned technical scheme, the filter screen passes through the inserted hole and slides in the mount, realizes the filter screen and can dismantle the setting on the mount, when needs carry out the washing of filter screen or when changing, only needs to pull out the filter screen from the inserted hole of mount, can realize the dismantlement of filter screen, and easy operation is convenient.

The utility model discloses further set up to: the linkage segment is including establishing the first ventilation pipe in the mount bottom, the vertical setting of first ventilation pipe, the bottom of first ventilation pipe is connected with the second ventilation pipe, second ventilation pipe level sets up, second ventilation pipe below is equipped with the collecting plate that is used for collecting the comdenstion water, the diapire slope of collecting plate sets up, the bottom of collecting plate is equipped with the drain pipe, the cabinet body setting is worn out to the drain pipe.

Through adopting above-mentioned technical scheme, the linkage segment includes the first ventilation pipe of vertical setting and the second ventilation pipe that the level set up, make the air route of entering comparatively tortuous, and the internal temperature of cabinet is higher than the external ambient temperature of cabinet, first ventilation pipe and second ventilation pipe still set up in the upper end of the cabinet body, the hot-air rises, the event forms the heating stoving effect to the air of entering, the realization carries out drying pretreatment to the air of entering, thereby reduce the moisture content in the entering air, and the outer wall of first ventilation pipe and second ventilation pipe has the comdenstion water, the comdenstion water falls to the collecting plate on, the diapire slope of collecting plate sets up, make the comdenstion water can pass through the drain pipe as early as possible and arrange outside the cabinet.

The utility model discloses further set up to: the top fixedly connected with ash blocking plate of the cabinet body, ash blocking plate sets up in the top of mount.

Through adopting above-mentioned technical scheme, because the air intake sets up on the top of the cabinet body, the air intake sets up promptly, and the dust board can reduce the piling up of dust in air intake department, prolongs the working life of equipment.

The utility model discloses further set up to: the drying section comprises a drying tube, the bottom end of the drying tube is connected with one end of a second vent pipe, an opening is formed in the side wall of the drying tube, a drying box is arranged in the drying tube, a drying agent is placed in the drying box, a plurality of vent holes used for ventilation are formed in the upper end wall and the lower end wall of the drying box, a limiting groove is formed in the peripheral wall of the drying box, a limiting block is fixed on the inner wall of the drying tube at the opening, the drying box is arranged at the opening through the matching sliding of the limiting groove and the limiting block, and a locking assembly used for locking the drying box is arranged on the limiting block.

By adopting the technical scheme, the drying box is arranged in the opening in a sliding manner, and is locked in the drying tube through the locking assembly, so that the drying box can be detachably arranged in the drying tube; the drying tube is connected with the second ventilation pipe, so that the entering air is further dried, the condition that moisture reacts with the frequency converter first is reduced, and the influence of the moisture on the frequency converter is reduced.

The utility model discloses further set up to: the locking subassembly is including offering the groove of accomodating on the stopper, it has the fixture block to accomodate inslot sliding connection, it is used for pushing out the fixture block and accomodates some elastic component in groove to accomodate to be equipped with between groove and the fixture block, the fixture block is kept away from the one end of accomodating the groove and is hemispherical spigot surface, the draw-in groove of seting up with fixture block cooperation joint in the spacing inslot.

Through adopting above-mentioned technical scheme, promote dry box and slide in the opening, when the diapire of spacing groove and the spigot surface contact of fixture block, the fixture block is impressed and is accomodate the groove in, continues the dry box that slides until the fixture block with the draw-in groove joint under the effect of elastic component to realize the locking of dry box in the drying tube.

The utility model discloses further set up to: and a sealing piece for sealing a gap between the opening and the drying box is arranged on the peripheral wall of the drying box.

Through adopting above-mentioned technical scheme, when dry box pushed to the dry tube in through the opening, the sealing member was with the gap shutoff between opening and the dry box, and the condition that the reduction air just flowed out from the gap without drying takes place.

The utility model discloses further set up to: the outlet of the drying pipe is provided with an arc-shaped plate, and the opening of the arc-shaped plate faces the inside of the cabinet body.

Through adopting above-mentioned technical scheme, the arc plays the guide effect that the air flows, makes the air that blows off from the drying tube flow to the sales counter below as early as possible through the arc, improves the internal air flow effect of cabinet.

To sum up, the utility model discloses a beneficial technological effect does:

1. fresh air enters from the air inlet at the top end of the cabinet body, and compared with the air inlets arranged at other positions, the higher the horizontal height is, the lower the humidity in the air is, so that the air is taken from the top end of the cabinet body, and the moisture content in the inlet air is reduced; the air outlet is arranged at the bottom end of the cabinet body, so that air can circulate up and down in the cabinet body, the air flow in the cabinet body is enhanced, and the moisture-proof effect is improved; the air inlet is provided with a transition section, a connecting section and a drying section, so that the entering air can be filtered and dedusted, the condition that the high-voltage frequency converter in the cabinet body is damaged by larger particle dust is reduced, the entering air can be pretreated by moisture, the moisture content in the air is reduced, and finally, the moisture in the inlet air is thoroughly absorbed and dried through the drying section, so that the air entering the electric appliance cabinet is dehumidified, the condition that the moisture reacts with the frequency converter in advance is reduced, and the influence of the moisture on the frequency converter is reduced;

2. the filter screen slides into the fixed frame through the insertion hole, so that the filter screen can be detachably arranged on the fixed frame, when the filter screen needs to be cleaned or replaced, the filter screen can be detached only by pulling out the filter screen from the insertion hole of the fixed frame, and the operation is simple and convenient;

3. the linkage segment includes the first ventilation pipe of vertical setting and the second ventilation pipe that the level set up, the air route that makes the entering is comparatively tortuous, and the internal temperature of cabinet is higher than the external ambient temperature of cabinet, first ventilation pipe and second ventilation pipe still set up in the upper end of the cabinet body, hot-air rises, the event forms the heating stoving effect to the air that gets into, the realization carries out drying pretreatment to the air that gets into, thereby reduce the moisture content in the entering air, and the outer wall of first ventilation pipe and second ventilation pipe has the comdenstion water, the comdenstion water falls to the collecting plate on, the diapire slope of collecting plate sets up, make the comdenstion water arrange to the cabinet body through the drain pipe as early as possible.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a schematic partial cross-sectional view of the present embodiment;

FIG. 3 is a cross-sectional structural view of the locking assembly;

fig. 4 is a schematic structural view of the drying box.

In the figure, 1, a cabinet body; 2. an air inlet; 3. an air outlet; 4. an exhaust fan; 5. a filtration section; 6. a connecting section; 7. a drying section; 8. a fixed mount; 9. an insertion opening; 10. a filter screen; 11. a first vent pipe; 12. a second vent pipe; 13. a drying tube; 14. an opening; 15. a limiting block; 16. drying the box; 17. a vent hole; 18. a limiting groove; 19. a locking assembly; 20. a receiving groove; 21. a clamping block; 22. an elastic member; 23. a card slot; 24. a seal member; 25. an arc-shaped plate; 26. a collection plate; 27. a dust blocking plate; 28. and a water discharge pipe.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, a dampproof device of furnace draught fan high-voltage inverter, including the cabinet body 1, seted up air intake 2 on the cabinet body 1 roof, two air outlets 3 have been seted up to the lateral wall bottom of the cabinet body 1, all fixedly connected with exhaust fan 4 on two air outlets 3, and exhaust fan 4 is used for the circulation of air in the cabinet body 1. Air intake 2 department is equipped with fillter section 5, linkage segment 6 and drying segment 7 along the air flow direction in proper order, and the changeover portion is used for the filtration of air inlet, and linkage segment 6 is used for the moisture preliminary treatment of air, and drying segment 7 is used for the drying of air inlet.

As shown in fig. 1 and 2, the filtering section 5 includes a fixing frame 8 fixed at the air inlet 2, an insertion opening 9 is opened on a side wall of the fixing frame 8, and the fixing frame 8 is slidably connected with a filtering net 10 through the insertion opening 9. The filter screen 10 can be detachably arranged on the fixed frame 8, and when the filter screen 10 needs to be cleaned or replaced, the filter screen 10 can be detached only by pulling out the filter screen 10 from the insertion hole 9 of the fixed frame 8; when the filter screen 10 is installed, the filter screen can be slid into the fixing frame 8 from the insertion opening 9. The top fixedly connected with dust baffle 27 of cabinet body 1, dust baffle 27 sets up in the top of mount 8, can reduce the piling up of dust in air intake 2 department, prolongs the working life of equipment.

The connecting section 6 comprises a first ventilation pipe 11 fixed at the bottom end of the fixing frame 8, and the first ventilation pipe 11 is vertically arranged. The bottom lateral wall fixedly connected with second ventilation pipe 12 of first ventilation pipe 11, second ventilation pipe 12 level sets up, the air route that makes the entering is comparatively tortuous, and the internal temperature of cabinet 1 is higher than the external ambient temperature of cabinet 1, first ventilation pipe 11 and second ventilation pipe 12 still set up in the upper end of the cabinet body 1, and the hot-air rises, so form the heating stoving effect to the air that gets into, the realization carries out drying pretreatment to the air that gets into to reduce the moisture content in the entering air. A collecting plate 26 is fixedly connected below the second ventilation pipe 12, and the collecting plate 26 is used for collecting condensed water condensed when the condensed water meets cold. The diapire slope of collecting plate 26 sets up, and the bottom fixedly connected with drain pipe 28 of collecting plate 26, and the setting of cabinet body 1 is worn out to the one end of drain pipe 28, makes the comdenstion water that falls on collecting plate 26 arrange to the cabinet body 1 outside through drain pipe 28 as early as possible, reduces the residue of comdenstion water on collecting plate 26.

As shown in fig. 2 and 3, the drying section 7 includes a drying pipe 13, and a bottom end of the drying pipe 13 is fixedly connected to one end of the second ventilation pipe 12. An opening 14 is formed in the side wall of the drying pipe 13, and a limiting block 15 is fixed on the inner wall of the drying pipe 13 at the opening 14. The opening 14 of the drying tube 13 is connected with a drying box 16 in a sliding manner, a drying agent is placed in the drying box 16, a plurality of ventilation holes 17 for ventilation are formed in the upper end wall and the lower end wall of the drying box 16, a limiting groove 18 is formed in the side wall of the drying box 16, and the drying box 16 is arranged at the drying tube 13 through the sliding fit of the limiting groove 18 and the limiting block 15.

The limiting block 15 is provided with a locking assembly 19, and the locking assembly 19 is used for locking the drying box 16 in the drying pipe 13. The locking assembly 19 includes a receiving groove 20 formed on the limiting block 15, a latch 21 is slidably connected in the receiving groove 20, an elastic member 22 is fixedly connected between the receiving groove 20 and the latch 21, and the elastic member 22 is used for pushing the latch 21 out of a part of the receiving groove 20. One end of the clamping block 21, which is far away from the accommodating groove 20, is a hemispherical guide surface, a clamping groove 23 is formed in the bottom plate of the limiting groove 18, and the clamping groove 23 is in matched clamping connection with the clamping block 21. The drying box 16 is pushed to slide in the opening 14, when the bottom wall of the limiting groove 18 is in contact with the guide surface of the clamping block 21, the clamping block 21 is pressed into the accommodating groove 20, the drying box 16 continues to slide until the clamping block 21 is clamped with the clamping groove 23 under the action of the elastic piece 22, and therefore the drying box 16 is locked in the drying tube 13.

As shown in fig. 2 and 4, a sealing member 24 is fixedly attached to the peripheral wall of the drying box 16, and the sealing member 24 is used to seal a gap between the opening 14 and the drying box 16. When the drying box 16 is pushed into the drying tube 13 through the opening 14, the sealing member 24 seals the gap between the opening 14 and the drying box 16, and the situation that air flows out of the gap without being dried is reduced.

An arc plate 25 is fixedly connected to the outlet of the drying pipe 13, and the opening 14 of the arc plate 25 faces the inside of the cabinet 1. The arc-shaped plate 25 plays a role in guiding air flow, so that air blown out from the drying pipe 13 flows to the lower part of the counter as soon as possible through the arc-shaped plate 25, and the air flow effect in the cabinet body 1 is improved.

The working process is as follows:

start exhaust fan 4, make the air from air intake 2 entering cabinet body 1, the air is filtered by filter screen 10 and is removed dust, dries and dehumidifies in first ventilation pipe 11 and second ventilation pipe 12, is dehumidified by the drier in the dry box 16 at last to the realization is dehumidified the air that gets into cabinet body 1, reduces the moisture and takes place the condition appearance that reacts with the converter earlier, reduces the influence of moisture to the converter.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a dampproof device of stove draught fan high-voltage inverter, includes the cabinet body (1), be equipped with air intake (2) and air outlet (3) on the cabinet body (1), be equipped with exhaust fan (4) that are used for the interior circulation of air of the cabinet body (1) on air outlet (3), its characterized in that: air intake (2) set up on the cabinet body (1) top, air outlet (3) set up in the cabinet body (1) bottom, air intake (2) department is equipped with along the air flow direction in proper order and is used for filterable fillter section of inlet air (5), is used for linkage segment (6) of moisture preliminary treatment and is used for dry section of inlet air (7).

2. The moisture-proof device of the furnace induced draft fan high-voltage frequency converter according to claim 1, which is characterized in that: the filter section (5) comprises a fixing frame (8) arranged at the air inlet (2), an insertion opening (9) is formed in the fixing frame (8), and a filter screen (10) is connected to the fixing frame (8) through the insertion opening (9) in a sliding mode.

3. The moisture-proof device of the furnace induced draft fan high-voltage frequency converter according to claim 2, characterized in that: the connecting section (6) is including establishing first ventilation pipe (11) in mount (8) bottom, the vertical setting of first ventilation pipe (11), the bottom of first ventilation pipe (11) is connected with second ventilation pipe (12), second ventilation pipe (12) level sets up, second ventilation pipe (12) below is equipped with collecting plate (26) that are used for collecting the comdenstion water, the diapire slope setting of collecting plate (26), the bottom of collecting plate (26) is equipped with drain pipe (28), the setting of the cabinet body (1) is worn out in drain pipe (28).

4. The moisture-proof device of the furnace induced draft fan high-voltage frequency converter according to claim 2, characterized in that: the top end fixedly connected with ash blocking board (27) of the cabinet body (1), ash blocking board (27) sets up in the top of mount (8).

5. The moisture-proof device of the furnace induced draft fan high-voltage frequency converter according to claim 3, characterized in that: drying section (7) include drying tube (13), the bottom of drying tube (13) is connected with the one end of second ventilation pipe (12), opening (14) have been seted up on the lateral wall of drying tube (13), be equipped with dry box (16) in drying tube (13), the drier has been placed in dry box (16), a plurality of ventilation hole (17) that are used for the ventilation have been seted up to the upper and lower end wall of dry box (16), spacing groove (18) have been seted up on the perisporium of dry box (16), be fixed with spacing piece (15) on dry tube (13) inner wall of opening (14) department, dry box (16) set up in opening (14) department through the cooperation slip of spacing groove (18) and spacing piece (15), be equipped with locking Assembly (19) that are used for locking dry box (16) on spacing piece (15).

6. The moisture-proof device of the furnace induced draft fan high-voltage frequency converter according to claim 5, characterized in that: locking subassembly (19) including offering groove (20) of accomodating on stopper (15), it has fixture block (21) to accomodate groove (20) sliding connection, it is used for releasing elastic component (22) of accomodating groove (20) some with fixture block (21) to accomodate to be equipped with between groove (20) and fixture block (21), the one end of accomodating groove (20) is kept away from in fixture block (21) is hemispherical spigot surface, draw-in groove (23) with fixture block (21) cooperation joint are seted up in spacing groove (18).

7. The moisture-proof device of the furnace induced draft fan high-voltage frequency converter according to claim 5, characterized in that: and a sealing piece (24) used for sealing a gap between the opening (14) and the drying box (16) is arranged on the peripheral wall of the drying box (16).

8. The moisture-proof device of the furnace induced draft fan high-voltage frequency converter according to claim 5, characterized in that: the outlet of the drying pipe (13) is provided with an arc-shaped plate (25), and the opening (14) of the arc-shaped plate (25) faces the inside of the cabinet body (1).