CN211902344U - Energy-efficient sealed steam trap - Google Patents

Abstract

An efficient energy-saving sealed steam drainage device belongs to the technical field of steam drainage equipment and is used for steam drainage. The technical scheme is as follows: chassis fixed connection is on the support, lower barrel fixed connection is in the chassis top, the upper end circumference fixed connection of labyrinth dish and lower barrel, the lower extreme circumference and the labyrinth dish circumference of going up the barrel are connected, go up the upper end circumference and the lower plane fixed connection of top cap of barrel, the labyrinth section of thick bamboo is placed in last barrel, the lower extreme of labyrinth section of thick bamboo and the upper surface swing joint of labyrinth dish, spacing has been placed between labyrinth section of thick bamboo outer wall and last barrel inner wall, there is the intake pipe to be linked together with the inner chamber of last barrel on the top cap, there is the vertically aqueduct at the center of labyrinth dish, the lower extreme of aqueduct is linked together with the inner chamber of barrel down, it is linked together with the external world to have the drain pipe on the lateral. The utility model discloses simple structure, convenient to use, to various hydrophobic volume strong adaptability, stability good, long service life, do not need artifical frequent inspection or inspection, practiced thrift the energy.

Description

Energy-efficient sealed steam trap

Technical Field

The utility model relates to a steam drainage device that is used for steam tail gas drainage to close vapour and uses belongs to steam drainage equipment technical field.

Background

The steam trap is mainly used for discharging and closing steam of steam tail steam. The steam and condensed water conversion mechanism is based on the density difference, temperature difference and phase change of steam and condensed water, and there are three types of common trap suitable for the steam and condensed water conversion mechanism, including mechanical type, thermostatic type and thermodynamic type. The common drain valve has the characteristics of small volume, good drainage effect and low price, and is widely adopted. However, the structure of the common trap is complex, the small parts in the valve body are easy to block and slow in action due to abrasion, corrosion, impact and the like, so that the proper function is lost, the maintenance is difficult, and the service life is short. In addition, the existing steam trap generally has the problems of poor steam discharge prevention effect, frequent action, frequent steam discharge and the like, which are not energy-saving, and also needs to be frequently adjusted and inspected manually, otherwise, the steam trap is very easy to cause the problems of large amount of discharged steam and even freezing injury. Moreover, the small drain valve has poor draining capability, and when the requirement on discharge capacity is high, the draining speed is low, so that the steam supply quantity of steam using equipment is insufficient; or the trap does not stop working and discharges a large amount of steam.

Therefore, the conventional drain valve cannot meet the production requirement, and a new drain device is urgently needed to be designed, so that the defects of a small drain valve are overcome, and the aims of high efficiency and energy-saving drainage are fulfilled.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a high-efficient energy-conserving sealed steam hydrophobic means is provided, this kind of sealed steam hydrophobic means can overcome traditional trap life-span short, the hydrophobic ability is limited, not energy-conserving drawback, can adapt to various hydrophobic volumes, need not do any regulation and artifical frequent inspection, can reach high-efficient energy-conserving effect.

The technical scheme for solving the technical problems is as follows:

a high-efficiency energy-saving sealed steam drainage device comprises a support, a chassis, a lower barrel, a labyrinth disk, a labyrinth cylinder, a limiting frame, an upper barrel and a top cover, wherein the support is placed on the ground or a foundation, the chassis is fixedly connected on the support, the lower barrel is fixedly connected above the chassis, the labyrinth disk is fixedly connected with the upper end circumference of the lower barrel, the lower end circumference of the upper barrel is connected with the circumference of the labyrinth disk, the upper end circumference of the upper barrel is fixedly connected with the lower plane of the top cover, the labyrinth cylinder is placed in the upper barrel, the lower end of the labyrinth cylinder is movably connected with the upper surface of the labyrinth disk, a limiting frame is arranged between the outer wall of the labyrinth cylinder and the inner wall of the upper cylinder body, an air inlet pipe is arranged on the top cover and communicated with the inner cavity of the upper cylinder body, the center of the labyrinth plate is provided with a vertical water guide pipe, the lower end of the water guide pipe is communicated with the inner cavity of the lower cylinder, and the side wall of the lower cylinder is provided with a drain pipe communicated with the outside.

Above-mentioned energy-efficient sealed steam hydrophobic means, the barrel is the cylinder down, and the flange has been welded respectively to cylinder upper end and lower extreme, and the circumference of two flanges equipartition respectively has a plurality of flange holes, and lower barrel is connected with the chassis of below and the labyrinth dish of top through the flange at both ends respectively.

Above-mentioned energy-efficient sealed steam hydrophobic means, go up the barrel and be the cylinder, the flange has been welded respectively to cylinder upper end and lower extreme, and the circumference of two flanges equipartition respectively has a plurality of flange holes, goes up the barrel and is connected with the maze dish of below and the top cap of top through the flange at both ends respectively.

The high-efficiency energy-saving sealed steam drainage device is characterized in that the top cover is a disc, connecting holes are uniformly distributed in the circumferential edge of the top cover, the connecting holes of the top cover are matched with the flange hole of the upper end flange of the upper barrel, the top cover is connected with the upper barrel through the connecting holes of the top cover and the flange hole of the upper end flange of the upper barrel through bolts, an air inlet hole is formed in the center of the top cover and communicated with the inner cavity of the upper barrel, and an air inlet pipe is welded to the upper.

Above-mentioned energy-efficient sealed steam hydrophobic means, the labyrinth dish comprises disc and a plurality of labyrinth ring, and the circumferential edge equipartition of disc has the connecting hole, and the disc is connected with the upper end flange of barrel and the lower extreme flange of last barrel down respectively through the connecting hole, and a plurality of labyrinth ring vertical welding are on the disc, and a plurality of labyrinth ring encircle the center of disc, and the diameter of a plurality of labyrinth ring increases gradually, and the height of a plurality of labyrinth ring equals, and the aqueduct welds perpendicularly in the center of disc, and the height of aqueduct equals with the height of labyrinth ring.

Above-mentioned energy-efficient sealed steam hydrophobic means, a labyrinth section of thick bamboo comprises roof, cylinder wall and a plurality of maze wall, and the roof is the disc, and cylinder wall and a plurality of maze wall are the cylinder of uniform height respectively, and the cylinder wall welds at the lower limb of roof circumference, and a plurality of maze walls vertical welding respectively is on the lower bottom surface of roof, and a plurality of maze walls encircle the center of roof disc, and the diameter of a plurality of maze walls increases gradually, and the external diameter of a plurality of maze walls is respectively with the internal diameter phase-match of a plurality of maze rings of maze dish.

Above-mentioned energy-efficient sealed steam hydrophobic means, the spacing has two spacing rings, a plurality of connecting rod and a plurality of gag lever post to constitute, and two spacing rings are the same ring, and the internal diameter of spacing ring and the drum wall external diameter phase-match of a maze section of thick bamboo, and two spacing rings are parallel from top to bottom placed, and a plurality of connecting rods are located and encircle the gag lever post equipartition between two spacing rings, and the both ends of a plurality of connecting rods are connected with two spacing rings respectively, and the length of a plurality of gag lever posts equals. A plurality of gag lever posts are located the periphery of two spacing rings respectively, and a plurality of gag lever posts encircle two spacing ring equipartitions, and a plurality of gag lever posts are parallel with the plane of spacing ring, and the one end of a plurality of gag lever posts respectively with the perpendicular welded connection of the outer wall of spacing ring, the other end of a plurality of gag lever posts contacts with the cylinder inner wall of last barrel respectively.

The utility model has the advantages that:

the utility model discloses a top cap is connected with the upper end of last barrel, the lower extreme of going up the barrel is connected with the maze dish, the maze section of thick bamboo is placed in last barrel, the lower extreme of a maze section of thick bamboo and the surface activity contact of maze dish, the top cap lower surface, go up the barrel inner wall, maze section of thick bamboo outer wall and maze dish upper surface shape become the airtight space around a maze section of thick bamboo, steam condenses for the comdenstion water after getting into the barrel from the top cap, the comdenstion water is stored up and is floated a maze section of thick bamboo after the certain degree of depth, the comdenstion water gets into from maze section of thick bamboo below, then flow from the aqueduct at maze dish. After the condensed water is discharged from the labyrinth disc at the lower end of the upper cylinder body, the water level drops, the labyrinth cylinder falls to restore the sealing state, the condensed water is accumulated in the upper cylinder body again, and the purposes of stopping steam and draining water are achieved through circulation.

The utility model discloses a steam trap's of iron and steel enterprise initiative, it is short to have overcome traditional trap life-span, the hydrophobic ability is limited, the drawback that is not energy-conserving, simple structure has, high durability and convenient use, strong adaptability to various hydrophobic volume, good stability, long service life's advantage, and simple manufacture, simple to operate, it is simple to dismantle and maintain, need not do any regulation, do not need artifical frequent inspection or inspection, through the use statistics, every trap is on average to practice thrift steam quantity 3.6% than the ordinary trap of former use, can realize direct economic benefits 12.6 ten thousand yuan each year, the energy has been practiced thrift, has apparent economic benefits, be worth in industry popularizing and applying.

Drawings

FIG. 1 is a schematic view of a prior art trap construction;

fig. 2 is a schematic structural diagram of the present invention;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is a schematic structural view of the top cover;

FIG. 5 is a schematic structural view of the upper cylinder;

FIG. 6 is a schematic structural view of the lower cylinder;

FIG. 7 is a schematic structural view of a labyrinth cylinder;

FIG. 8 is a schematic structural view of a labyrinth plate;

FIG. 9 is a schematic structural view of the stop frame;

fig. 10, 11 and 12 are schematic views of the working states of the present invention;

the figures are labeled as follows: the water drainage device comprises a water drainage valve 1, a support 2, a base plate 3, a lower barrel 4, a labyrinth disc 5, a labyrinth barrel 6, a limiting frame 7, an upper barrel 8, a top cover 9, an air inlet pipe 10, a water guide pipe 11, a water discharge pipe 12, a flange 13, a flange hole 14, a disc 15, a labyrinth ring 16, a top plate 17, a cylinder wall 18, a labyrinth wall 19, a limiting ring 20, a connecting rod 21, a limiting rod 22 and a connecting hole 23.

Detailed Description

FIG. 1 is a schematic view of a prior art trap construction.

The utility model discloses constitute by support 2, chassis 3, lower barrel 4, maze dish 5, a maze section of thick bamboo 6, spacing 7, last barrel 8, top cap 9.

Fig. 2 and 3 show that the support 2 is placed on the ground or the foundation, the chassis 3 is fixedly connected to the support 2, the lower cylinder 4 is fixedly connected to the upper side of the chassis 3, the labyrinth disc 5 is fixedly connected to the upper end circumference of the lower cylinder 4, the lower end circumference of the upper cylinder 8 is connected to the circumference of the labyrinth disc 5, and the upper end circumference of the upper cylinder 8 is fixedly connected to the lower plane of the top cover 9. A labyrinth section of thick bamboo 6 is placed in last barrel 8, the lower extreme of a labyrinth section of thick bamboo 6 and the upper surface swing joint of labyrinth dish 5, and a labyrinth section of thick bamboo 6 can reciprocate. A limiting frame 7 is arranged between the outer wall of the labyrinth cylinder 6 and the inner wall of the upper cylinder 8 and used for limiting the movement of the labyrinth cylinder 6 in the horizontal direction. An air inlet pipe 10 is arranged on the top cover 9 and communicated with the inner cavity of the upper cylinder 8 for inputting steam into the upper cylinder 8. A vertical water guide pipe 11 is arranged in the center of the labyrinth disc 5, and the lower end of the water guide pipe 11 is communicated with the inner cavity of the lower cylinder 4 and is used for conveying condensed water in the upper cylinder 8 into the lower cylinder 4. A drain pipe 12 is arranged on the side wall of the lower barrel 4 and communicated with the outside for draining the condensed water.

Fig. 4 shows that the top cover 9 is a steel plate disc, the circumferential edge of the top cover 9 is uniformly provided with connecting holes 23, the connecting holes 23 of the top cover 9 are matched with the flange holes 14 of the upper end flange 13 of the upper barrel 8, bolts connect the top cover 9 with the upper barrel 8 through the connecting holes 23 of the top cover 9 and the flange holes 14 of the upper end flange 13 of the upper barrel 8, the center of the top cover 9 is provided with an air inlet hole communicated with the inner cavity of the upper barrel 8, and the upper end of the air inlet hole of the top cover 9 is welded. The top cover 9 has the function of guiding steam tail gas into the upper cylinder 8, and a closed space enclosed by the upper cylinder 8 and the labyrinth disc 5 is used for storing condensed water and steam.

The utility model discloses a top cap 9 of an embodiment is the preparation of 1Cr18Ni9Ti steel sheet, and top cap 9's external diameter is 900mm, and the diameter of connecting hole 23 is 12mm, and connecting hole 23 is 20, and at top cap 9's diameter phi 860 mm's circumference equipartition, connecting bolt is M10 x 45 bolt/nut sub-assembly, and intake pipe 10 is phi 25 phi 16 steel pipe preparation.

Fig. 5 shows that, go up barrel 8 and be the cylinder, the welding has flange 13 respectively to cylinder upper end and lower extreme, and the circumference of two flange 13 equipartitions respectively has a plurality of flange holes 14, goes up barrel 8 and is connected with labyrinth dish 5 of below and the top cap 9 of top through the flange 13 at both ends respectively.

The utility model discloses an go up barrel 8 of an embodiment and make with 1Cr18Ni9Ti steel sheet welding, go up the flange 13 external diameter of barrel 8 and be 900mm, at flange 13 circumference evenly distributed processing 20 flange holes 14, the diameter in flange hole 14 is 12mm, flange hole 14 is corresponding with top cap 9's connecting hole 23, and connecting bolt is M10 x 45 bolt/nut sub-assembly.

Fig. 6 shows that lower barrel 4 is the cylinder, and the welding has flange 13 respectively to cylinder upper end and lower extreme, and the circumference of two flange 13 equipartition respectively has a plurality of flange holes 14, and lower barrel 4 is connected with chassis 3 below and the maze dish 5 of top through the flange 13 at both ends respectively. The labyrinth plate 5, the base plate 3 and the lower cylinder 4 form a lower closed space, and the condensed water introduced through the water conduit 11 is received and discharged through the water discharge pipe 12.

The utility model discloses a lower barrel 4 of an embodiment is with 1Cr18Ni9Ti steel sheet welding preparation, and the flange 13 external diameter at 4 both ends of lower barrel is 900mm, at flange 13 circumference evenly distributed processing 20 flange holes 14, and the diameter in flange hole 14 is 12 mm.

Fig. 8 shows that the labyrinth disk 5 consists of a circular disk 15 and a plurality of labyrinth rings 16. The circumferential edge of the disc 15 is evenly provided with connecting holes, and the disc 15 is respectively connected with the upper end flange of the lower barrel 4 and the lower end flange of the upper barrel 8 through the connecting holes. The plurality of labyrinth rings 16 are vertically welded on the disc 15, the plurality of labyrinth rings 16 surround the center of the disc 15, the diameters of the plurality of labyrinth rings 16 are gradually increased, the heights of the plurality of labyrinth rings 16 are equal, the water guide pipe 11 is vertically welded at the center of the disc 15, and the height of the water guide pipe 11 is equal to the height of the labyrinth rings 16. An upper closed space is defined by the top cover 9, the upper cylinder 8 and the labyrinth disc 5, and a lower closed space is defined by the labyrinth disc 5, the lower cylinder 4 and the chassis 3.

The utility model discloses a labyrinth dish 5 of an embodiment is with 1Cr18Ni9Ti steel sheet preparation, and labyrinth dish 5's disc 15's steel sheet thickness 10mm has welded 4 labyrinth rings 16 that are 2mm by diameter 250mm to 550mm thickness that 100mm is high on the disc 15, requires continuous welding seam, must not have the seepage. After welding and forming, the cylinder is filled with water, and a leak-free test is carried out for not less than 2 hours. The aqueduct 11 is a phi 25/phi 16mm steel pipe. The outer diameter of the labyrinth disc 5 is 900mm, 20 round holes with the diameter of 12mm are uniformly distributed and processed on the 860mm circle of the disc 16 and are correspondingly matched with the flange holes of the upper cylinder body 8 and the lower cylinder body 4, and the M10 multiplied by 45 bolt/nut assemblies are used for fastening connection.

Fig. 7 shows that the labyrinth box 6 is composed of a top plate 17, a cylinder wall 18 and a plurality of labyrinth walls 19, the top plate 17 is a circular disc, the cylinder wall 18 and the labyrinth walls 19 are respectively cylinders with equal height, the cylinder wall 18 is welded on the lower edge of the circumference of the top plate 17, the labyrinth walls 19 are respectively and vertically welded on the lower bottom surface of the top plate 17, the labyrinth walls 19 surround the center of the circular disc of the top plate 17, the diameters of the labyrinth walls 19 are gradually increased, and the outer diameters of the labyrinth walls 19 are respectively matched with the inner diameters of the labyrinth rings 16 of the labyrinth box 6.

The labyrinth walls 19 of the labyrinth cylinder 6 are fitted between the labyrinth rings 16 of the labyrinth plate 5, so that a closed space is formed between the labyrinth cylinder 6 and the labyrinth plate 5, and the labyrinth cylinder 6 can move in the vertical direction. When the water level in the upper cylinder 8 reaches a certain height, the buoyancy overcomes the weight of the labyrinth cylinder 6 to move the labyrinth cylinder upwards by 100mm, then the condensed water can enter the water guide pipe 11 through a labyrinth gap between the labyrinth cylinder 6 and the labyrinth disc 5, the condensed water is guided into the closed space of the lower cylinder 4 through the water guide pipe 11, and then the condensed water is discharged through the water discharge pipe 12. When the water is drained to a certain degree, the labyrinth cylinder 6 falls into the labyrinth disc 5 under the action of self weight, and the labyrinth cylinder and the labyrinth disc 5 limit the steam to overflow through the water guide pipe 11 and the water drain pipe 12 to waste energy.

The utility model discloses a labyrinth section of thick bamboo 6 of an embodiment is with 1Cr18Ni9Ti steel sheet welding preparation, roof 17 steel sheet thickness 3mm, and cylinder wall 18 and labyrinth wall 19 require continuous welding seam for height 600mm, diameter 100mm to 600 mm's 5 layer structure, must not have the seepage. After welding and forming, the cylinder is filled with water, and a leak-free test is carried out for not less than 2 hours.

Fig. 9 shows that the stop collar 7 is composed of two stop rings 20, a plurality of connecting rods 21 and a plurality of stop rods 22. The two limiting rings 20 are the same circular rings, the inner diameter of the limiting ring 20 is matched with the outer diameter of the cylindrical wall 18 of the labyrinth tube 6, and the two limiting rings 20 are arranged in parallel up and down. A plurality of connecting rods 21 are located and encircle spacing ring 20 equipartition between two spacing rings 20, and the both ends of a plurality of connecting rods 21 are connected with two spacing rings 20 respectively. The plurality of stopper rods 22 are equal in length. A plurality of gag lever posts 22 are located the periphery of two spacing rings 20 respectively, and a plurality of gag lever posts 22 encircle two spacing ring 29 equipartitions, and a plurality of gag lever posts 22 are parallel with the plane of spacing ring 20, and a plurality of gag lever posts 22's one end respectively with the perpendicular welded connection of outer wall of spacing ring 20, the other end of a plurality of gag lever posts 22 contacts with the cylinder inner wall of last barrel 8 respectively. The stopper 7 functions to restrict the movement of the labyrinth tube 6 in the diameter direction, and moves only within a range of 1m up and down in the sealed space defined by the top cover 9, the upper tube 8, and the labyrinth plate 5.

The utility model discloses a spacing 7 of an embodiment is made with 1Cr18Ni9Ti steel tube welding. The outer end circumference diameter of the limiting rod 22 of the limiting frame 7 is 786mm, the limiting rod is matched with the inner diameter 800mm of the upper barrel 9, the inner diameter of the limiting ring 20 of the limiting frame 7 is 610mm, the limiting ring is matched with the outer diameter 600mm of the labyrinth barrel 6, the limiting frame 7 is arranged in a gap between the inner wall of the upper barrel 9 and the outer wall of the labyrinth barrel 6, and the labyrinth barrel 6 can be limited to move up and down in the limited gap.

Fig. 10, 11 and 12 show that the working process of the present invention is as follows:

the air inlet pipe 10 on the top cover 9 is connected with a steam pipeline, steam is introduced into the inner cavity of the upper barrel 8 below the top cover 9, and the steam is condensed after entering the upper barrel 8.

The labyrinth plate 5 is horizontally arranged, the labyrinth cylinder 6 is buckled on the labyrinth plate 5, the labyrinth rings 16 and the labyrinth walls 19 are mutually staggered to form a closed space, and when the water level in the upper cylinder 8 is lower, condensed water is closed in the space enclosed by the upper cylinder 8, the outer side of the labyrinth cylinder 6 and the labyrinth plate 5.

The labyrinth tube 6 can freely move up and down within the range of 1 meter in the space of the upper tube body 8, the diameter of the tube bottom of the labyrinth tube 6 is 600mm, when the water level in the space formed by the outer side of the upper tube body 8, the labyrinth tube 6 and the upper surface of the labyrinth disc 5 reaches 83.5mm, the water discharge amount of the labyrinth tube 6 is just balanced with the weight of the labyrinth tube 6, and the labyrinth tube 6 moves upwards. When the moving amount of the labyrinth cylinder 6 exceeds 100mm, the labyrinth cylinder 6 is separated from the labyrinth disc 5, and condensed water can flow to the water guide pipe 11 through a gap between the labyrinth cylinder 6 and the labyrinth disc 5, enter the space in the lower cylinder 4 through the water guide pipe 11, and then is discharged through the water discharge pipe 12 through overflow.

When the accumulated water in the upper cylinder body 8 is discharged to a certain degree, the water level descends, and the buoyancy to the labyrinth cylinder 6 is smaller than the weight of the labyrinth cylinder 6, under the action of the dead weight, the labyrinth cylinder 6 descends and falls into the labyrinth disc 5 to form a sealing effect with the labyrinth disc 5, and the discharge of the condensed water is stopped.

When the condensed water level in the upper cylinder 8 rises again, the labyrinth cylinder 6 drains water again after being subjected to buoyancy rising, and the steps are repeated so as to achieve the functions of stopping steam and draining water. The steam and the water outlet are completely separated by condensed water stored between the labyrinth cylinder 6 and the labyrinth disc 5, and the condensed water is used as an intermediate medium, so that the steam can be completely prevented from being discharged outside, and a complete energy-saving effect is achieved.

Claims (7)

1. The utility model provides an energy-efficient sealed steam hydrophobic means which characterized in that: it comprises a bracket (2), a chassis (3), a lower barrel (4), a labyrinth disc (5), a labyrinth barrel (6), a limit frame (7), an upper barrel (8) and a top cover (9), wherein the bracket (2) is placed on the ground or a foundation, the chassis (3) is fixedly connected on the bracket (2), the lower barrel (4) is fixedly connected above the chassis (3), the labyrinth disc (5) is fixedly connected with the upper end circumference of the lower barrel (4), the lower end circumference of the upper barrel (8) is connected with the circumference of the labyrinth disc (5), the upper end circumference of the upper barrel (8) is fixedly connected with the lower plane of the top cover (9), the labyrinth barrel (6) is placed in the upper barrel (8), the lower end of the labyrinth barrel (6) is movably connected with the upper surface of the labyrinth disc (5), the limit frame (7) is placed between the outer wall of the labyrinth barrel and the inner wall of the upper barrel, an air inlet pipe (10) is arranged on the top cover (9) and is communicated with the inner cavity, a vertical water guide pipe (11) is arranged in the center of the labyrinth disc (5), the lower end of the water guide pipe (11) is communicated with the inner cavity of the lower cylinder body (4), and a water discharge pipe (12) is arranged on the side wall of the lower cylinder body (4) and communicated with the outside.

2. The energy efficient sealed steam trap of claim 1, wherein: barrel (4) are the cylinder down, and the welding has the flange respectively to cylinder upper end and lower extreme, and the circumference of two flanges equipartition respectively has a plurality of flange holes, and lower barrel (4) are connected with chassis (3) of below and labyrinth dish (5) of top through the flange at both ends respectively.

3. The energy efficient sealed steam trap of claim 1, wherein: go up barrel (8) and be the cylinder, the flange has been welded respectively to cylinder upper end and lower extreme, and the circumference of two flanges equipartition respectively has a plurality of flange holes, goes up barrel (8) and is connected with labyrinth dish (5) of below and top cap (9) of top through the flange at both ends respectively.

4. The energy efficient sealed steam trap of claim 1, wherein: the top cover (9) is a disc, connecting holes (23) are evenly distributed at the circumferential edge of the top cover (9), the connecting holes (23) of the top cover (9) are matched with flange holes (14) of an upper end flange (13) of an upper barrel body (8), bolts connect the top cover (9) with the upper barrel body (8) through the connecting holes (23) of the top cover (9) and the flange holes (14) of the upper end flange (13) of the upper barrel body (8), an air inlet hole is formed in the center of the top cover and communicated with an inner cavity of the upper barrel body, and an air inlet pipe (10) is welded at the upper end of the air inlet hole of the.

5. The energy efficient sealed steam trap of claim 1, wherein: labyrinth dish (5) comprise disc (15) and a plurality of labyrinth ring (16), the circumferential edge equipartition of disc (15) has the connecting hole, disc (15) are connected with the upper end flange of barrel (4) and the lower extreme flange of last barrel (8) down respectively through the connecting hole, a plurality of labyrinth ring (16) vertical welding are on disc (15), the center of disc (15) is encircleed in a plurality of labyrinth ring (16), the diameter of a plurality of labyrinth ring (16) increases gradually, the height of a plurality of labyrinth ring (16) equals, aqueduct (11) vertical welding is in the center of disc (15), the height of aqueduct (11) equals with the height of labyrinth ring (16).

6. The energy efficient sealed steam trap of claim 1, wherein: the labyrinth box (6) is composed of a top plate (17), a cylinder wall (18) and a plurality of labyrinth walls (19), wherein the top plate (17) is a disc, the cylinder wall (18) and the labyrinth walls (19) are cylinders with equal height respectively, the cylinder wall (18) is welded on the lower edge of the circumference of the top plate (17), the labyrinth walls (19) are vertically welded on the lower bottom surface of the top plate (17) respectively, the labyrinth walls (19) surround the center of the disc of the top plate (17), the diameters of the labyrinth walls (19) are gradually increased, and the outer diameters of the labyrinth walls (19) are matched with the inner diameters of the labyrinth rings (16) of the labyrinth disc (5) respectively.

7. The energy efficient sealed steam trap of claim 1, wherein: the limiting frame (7) is composed of two limiting rings (20), a plurality of connecting rods (21) and a plurality of limiting rods (22), the two limiting rings (20) are the same circular rings, the inner diameter of each limiting ring (20) is matched with the outer diameter of a cylindrical wall (18) of the labyrinth tube (6), the two limiting rings (20) are arranged in parallel from top to bottom, the connecting rods (21) are positioned between the two limiting rings (20) and uniformly distributed around the limiting rings (20), the two ends of each connecting rod (21) are respectively and vertically connected with the two limiting rings (20), the limiting rods (22) are equal in length, the limiting rods (22) are respectively positioned at the peripheries of the two limiting rings (20), the limiting rods (22) are uniformly distributed around the two limiting rings (20), the limiting rods (22) are parallel to the plane of the limiting rings (20), one ends of the limiting rods (22) are respectively and vertically welded with the outer walls of the limiting rings (20), the other ends of the limiting rods (22) are respectively contacted with the inner wall of the cylinder body of the upper cylinder body (8).

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