CN2611645Y - Integrated set of centripetal expander and centrifugal compressor - Google Patents

Abstract

Integrated units of a centripetal expansion engine and a centrifugal compressor including a compressor shaft, a centripetal expansion engine shaft, an upper shell of the centrifugal compressor, a lower shell of the centrifugal compressor, a thrust bearing box, an end flange, a steady bearing box, a spiral housing of the centripetal expansion engine, a pressurized region of the centripetal expansion engine, and a pressurized region of the centrifugal compressor, is pointed in that the compressor shaft and the centripetal expansion engine shaft are the same single shaft. One end of the shaft is the expansion engine, the other end communicated with a prime motor via a shaft coupling. The compressor is arranged between the shaft bearing regions. The spiral housing of the expansion engine is directly hung outside the steady bearing box. The spiral housing of the centripetal expansion engine is connected with the shell of the compressor via the thrust bearing box and the end flange. The lower shell of the centrifugal compressor is soldered with the steady bearing box to form an integer. The upper shell and the lower shell of the centrifugal compressor are connected with each other via bolts. An inflation cavity is formed by a gasket inside the steady bearing and the pressurized region at the end of the compressor. The utility model depresses the manufacturing and running cost and mechanical loss of the integrated units, and reduces the trouble points.

Description

Entad decompressor and centrifugal compressor are integrated unit

(1) technical field

The utility model relates to a kind of tail gas recycle equipment, particularly relates to a kind of entad decompressor and centrifugal compressor and integrates unit.

(2) background technique

The tail gas expansion technique can satisfy the demand of utilizing the industrial tail gas recovered energy, meets environmental protection and energy-conservation and social development main trend.In the three-in-one energy recycle device of nitric acid, all adopted steam turbine, compressor, tail gas decompressor three units both at home and abroad in the past, the problem of bringing thus is that one-time investment is big, repair and maintenance cost height, mechanism's loss is big, and the fault point is many etc.

(3) summary of the invention

In order to solve the technical problem that exists in the existing above-mentioned technology, the utility model provides a kind of entad decompressor and centrifugal compressor to integrate unit.

The technical solution of the utility model is achieved in that compressor shaft and expander shaft entad are same single shaft, promptly is compressor between the bearing, and shaft extension end one end is a decompressor, and the other end links by coupling and prime mover.Decompressor is directly outer to be connected on the bearing of compressor case, and the unit spring bearing is a tiltable tile fragment formula bearing, and thrust-bearing places the spring bearing inboard.The machine set compressor casing is closed by the bolt handle by upper casing and lower housing.Lower housing is connected with the bearing housing solid welding, and the bearing housing outside carries half flange plate, connects into whole vertical surface flange plate by leveling screw and end flange.Entad the decompressor volute casing hangs on the bearing of compressor case by stud is directly outer.The compressor axle head is sealed into the labyrinth seal of single chamber, in bearing, be provided with an inflatable chamber between the sealing of side seal and compressor axle head, oil gas is inhaled into compressor in the bearing housing when preventing start-stop, entad links to each other with end flange by a thrust bearing case between decompressor volute casing and compressor case.

The utility model has been become steam turbine, has been integrated unit two units by the steam turbine, compressor, tail gas decompressor three units that adopt in the past, compares with three units, has not only reduced manufacturing operating cost, has reduced the mechanical loss of unit; And reduced the fault point, make the easier safety and stability running of unit.To exploiting market, improving unexpectedly, the power of striving is significant.

(4) description of drawings

Fig. 1 is the structural representation of a kind of mode of execution of the utility model.

(5) embodiment

As shown in Figure 1 the utility model entad decompressor and centrifugal compressor integrate unit, comprise compressor shaft 1, entad expander shaft 2, spring bearing 3, thrust-bearing 4, centrifugal compressor upper casing 5, centrifugal compressor lower housing 6, a thrust bearing case 7, end flange 8, spring bearing case 9, entad decompressor volute casing 10, entad decompressor seal area 11, centrifugal compressor seal area 12.Wherein, compressor shaft 1 is same single shaft with expander shaft 2 entad, promptly is compressor 14 between the bearing district, and shaft extension end one end is a decompressor 15, and the other end links by coupling and prime mover.Entad decompressor volute casing 10 is directly outer hangs on the spring bearing case 9, entad links to each other with end flange 8 by propping up a thrust bearing case 7 between decompressor volute casing 10 and compressor case, and like this, two units unite two into one.Spring bearing 3 is two secondary tiltable tile fragment formula bearings, and thrust-bearing 4 is the Jin Sibailei bearing, places the inboard (decompressor end) of spring bearing case 9, and the centrifugal compressor casing is the horizonally split welding casing.Centrifugal compressor lower housing 6 is welded as a whole with spring bearing case 9, and centrifugal compressor upper casing 5 closes by split bolt handle with lower housing 6.Spring bearing case 9 outsides carry half flange plate, connect into whole vertical surface flange plate by horizontal flange bolt and end flange 8.Compressor 14 both sides shaft end seals are the labyrinth seal of single chamber, and this chamber is the balance air cavity, and air leaks outside in the running to reduce, and reduces the unit wasted work.Also have an inflatable chamber 13, this inflatable chamber 13 to be used for inflation between the sealing of side seal and compressor axle head in spring bearing 3, oil gas are inhaled into compressor 14 in the spring bearing case 9 when preventing the start-stop car, pollute.Spring bearing case 9 bottoms of decompressor volute casing 10 are provided with the rigidity of four gussets to guarantee that this is regional.

Claims (1)

1, entad decompressor and centrifugal compressor are integrated unit, comprise compressor shaft (1), expander shaft (2) entad, spring bearing (3), thrust-bearing (4), centrifugal compressor upper casing (5), centrifugal compressor lower housing (6), prop up thrust bearing case (7), end flange (8), spring bearing case (9), decompressor volute casing (10) entad, decompressor seal area (11) entad, centrifugal compressor seal area (12), it is characterized in that: compressor shaft (1) is same single shaft with expander shaft (2) entad, shaft extension end one end is decompressor (15), the other end links by coupling and prime mover, it between the bearing district compressor (14), entad decompressor volute casing (10) is directly outer hangs on the spring bearing case (9), entad link to each other with end flange (8) by a thrust bearing case (7) between decompressor volute casing and compressor case, thrust-bearing (4) places the inboard of spring bearing case (9), centrifugal compressor lower housing (6) is welded as a whole with spring bearing case (9), centrifugal compressor upper casing (5) and lower housing (6) closing, are provided with an inflatable chamber (13) between the sealing of side seal and compressor axle head by bolt in spring bearing (3).