CN217152338U - Large-pressure-ratio integral skid-mounted supercharger device - Google Patents

Abstract

The utility model discloses a big pressure ratio is whole to sled dress supercharging device, its characterized in that: the booster is fixed with the gear box through bolts and matched with the motor through a coupler; the base is internally provided with a cavity for containing lubricating oil, and the base is also provided with a lubricating oil pump for driving the circulation of the lubricating oil and a cooler for cooling the lubricating oil; the booster includes a volute and an impeller located inside the volute. Compared with a supercharger device with an independent oil tank, the utility model firstly reduces the occupied area of the unit by about one time, and the early investment is relatively low; secondly, the oil inlet and the oil return of the whole set of unit are all around the oil station, so that the installation problem of pipelines is reduced; thereby reducing the cost of processing production and reducing the assembly difficulty.

Description

Large-pressure-ratio integral skid-mounted supercharger device

Technical Field

The utility model belongs to the technical field of centrifuge structure, a big pressure ratio whole sled dress supercharging device is related to, in particular to the device that improves the booster compressor that technology gas pressure accomplished follow-up process flow among the petroleum coke hydrogen manufacturing lime-ash integrated utilization device.

Background

At present, in the petrochemical industry, a centrifugal supercharger is an important device of a catalytic device and is used for supercharging main air from a main fan, one part of the supercharged main air is used as fluidizing air of an external heat remover, and the other part of the supercharged main air enters the bottom of a vertical pipe of the external heat remover and is used as lifting air of a catalyst in the external heat remover returning to a dense bed of a regenerator to provide a driving force for countercurrent regeneration. With the development of the petrochemical industry, the supercharger device is also used on other devices except a catalytic device to meet the requirements of a new process of a new device.

The booster used in most petrochemical industry at present comprises a power input shaft, a power output shaft, an impeller, a seal, a shell and the like, wherein the power input shaft and the power output shaft are in gear engagement transmission, the seal disc is sleeved on the power output shaft and is in running fit with the power output shaft, the impeller is fixedly sleeved on the power output shaft, the shell is sleeved outside the power output shaft and is fixedly connected with the seal disc, the impeller in the upper complaint structure is expensive due to a titanium alloy inducer and a titanium alloy impeller diffusion part, and the impeller has poor erosion resistance, so that the service life of the impeller is short, and the overhaul cost is increased.

How to make the whole pressure ratio of big pressure ratio booster compressor device be used in petroleum coke hydrogen production lime-ash integrated utilization device effectively, satisfy under the prerequisite of the requirement of this device, the efficiency of booster compressor improves simultaneously, and life's time extension reduces cost of maintenance, provides a high-efficient reliable whole pressure ratio of big pressure ratio booster compressor device and has just become the target that this technical field technical personnel pursued.

Chinese patent CN202065202U discloses a "benzofel steam centrifugal compressor", which is characterized in that: the product comprises a power input shaft, a power output shaft, an impeller consisting of an inducer and an impeller diffusion part, a sparse tooth sealing disc sleeve and a volute; the driving gear of the power input shaft is meshed with the driven gear on the power output shaft; the sparse tooth sealing disc is sleeved on the power output shaft and is in running fit with the power output shaft, and the impeller is fixedly sleeved on the power output shaft; the volute is sleeved outside the power output shaft and is fixedly connected with the sparse tooth sealing disc sleeve; the impeller is formed by integrally forming a stainless steel inducer and a stainless steel impeller diffusion part. There is a need for improvements in the aspects described herein, which would be further enhanced by improvements in machine performance and efficiency.

Chinese patent CN200996384Y discloses a single-stage cantilever circulating gas compressor, which comprises a housing and an impeller installed in the housing, wherein a main shaft is connected to a bearing box through a support bearing, and one end of the main shaft is a cantilever end and is inserted in the housing; the impeller is arranged at the cantilever end of the main shaft, is positioned outside the support bearing and is linked with the main shaft; a seal is arranged between the impeller and the support bearing; the seal is a high-temperature buffer gas seal and a dry gas seal from the impeller to the support bearing in sequence; the support bearing is a set.

Although the products of the invention are already applied in industrial production, the integral pressure booster device with high pressure ratio is used in the current new process device, meets the process requirements of the new device, runs safely and stably, has room for improvement in certain aspects of the product, and particularly, the main components of the product, namely a rotor and a working wheel (namely an impeller) on the rotor, a sealing device of a compressor, the shape of a machine shell and other parts are researched, and the work efficiency, the saved maintenance cost and the work range of the product are greatly improved by deeply researching the work efficiency of the product. To sum up, it is the focus of our research.

SUMMERY OF THE UTILITY MODEL

To the weak point among the prior art, the utility model provides a big pressure ratio is whole to be sled dress supercharging device is applied to in the middle of the petrochemical trade, and it is wide to have working range, and is efficient, long service life to detect the lower advantage of cost of maintenance.

The utility model discloses a realize through following technical scheme: the utility model provides a whole sled dress booster unit of big pressure ratio which characterized in that: the booster is fixed with the gear box through bolts and matched with the motor through a coupler; the base is internally provided with a cavity for containing lubricating oil, and the base is also provided with a lubricating oil pump for driving the circulation of the lubricating oil and a cooler for cooling the lubricating oil; the booster includes a volute and an impeller located inside the volute.

Further: the volute is Y-shaped, and the blades on the impeller are backward-bent ternary twisted blades.

Further: the volute is a cast volute, and the upper volute and the lower volute adopt Y-shaped structures; the impeller is a stainless steel closed type two-piece welding and milling impeller.

Further: the lubricating oil pump and the cooler are arranged on one side of the base, and the cooler is arranged at the rear part of the lubricating oil pump.

Further: the rear part of the cooler is provided with a regulating valve.

Further: in the inside cavity of base, be provided with a plurality of support columns.

The utility model has the advantages that: compared with a supercharger device with an independent oil tank, the utility model firstly reduces the occupied area of the unit by about one time, and the early investment is relatively low; secondly, the oil inlet and the oil return of the whole set of unit are all around the oil station, so that the installation problem of pipelines is reduced; therefore, the cost of processing and production is reduced, and the assembly difficulty is reduced.

Drawings

FIG. 1 is a top view of the overall structure of the present invention;

FIG. 2 is a front view of the overall structure of the present invention;

FIG. 3 is a cross-sectional view of the housing of the present invention;

fig. 4 is a cross-sectional view of an impeller of the present invention;

fig. 5 is a front view of the impeller of the present invention.

The sequence numbers in the figures illustrate: 1, a motor; 2, a gear box; 3, a supercharger; 4, coupling; 5 lubricating oil pump; 6, a cooler; 7, a filter; 8, adjusting a valve; 9 a base; 10, an impeller; 11 spiral case.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-5, the utility model discloses a large pressure ratio integral skid-mounted supercharger device, which comprises a base 9, wherein a motor 1, a gear box 2 and a supercharger 3 are sequentially arranged on the base, the supercharger and the gear box are fixed by bolts and are matched with the motor by a coupler 4; a cavity for containing lubricating oil is arranged inside the base, so that the base and the oil tank are integrated; a lubricating oil pump 5 for driving the circulation of lubricating oil and a cooler 6 for cooling the lubricating oil are also arranged on the base; the supercharger comprises a volute 11 and an impeller 10 located inside the volute.

Preferably: the volute is Y-shaped, and the blades on the impeller are backward-bent ternary twisted blades.

Preferably: the volute is a cast volute, and the upper volute and the lower volute adopt Y-shaped structures; the impeller is a stainless steel closed type two-piece welding and milling impeller.

Preferably: the lubricating oil pump and the cooler are arranged on one side of the base, and the cooler is arranged at the rear part of the lubricating oil pump; the lubricating oil trend of the oil station has no repeated route, so that the oil supply pressure of the unit is stable;

preferably: a regulating valve 8 is provided at the rear of the cooler, and a filter 7 is provided at the front of the regulating valve.

Preferably: in the inside cavity of base, be provided with a plurality of support columns. The support column is located corresponding positions such as motor, can guarantee that the base has sufficient intensity, can support the weight of gear box and motor again to guarantee that each part installation on the base is firm.

Preferably: the cavity in the base is used as an oil station, and the interior of the base is divided into an oil return chamber, a stabilization chamber and an oil supply chamber by a partition plate. Each oil chamber is provided with an operation port for cleaning or maintenance. The oil return chamber is used for recovering used lubricating oil, the stabilizing chamber is used for precipitating the lubricating oil or supplementing new oil, and the oil supply chamber is used for supplying oil liquid of the lubricating oil pump.

Preferably: the number of the blades is 17, the weight of the impeller is reduced, the pressure ratio is increased to 1.46, and the efficiency of the supercharger is improved by 2-3%.

The present solution is further illustrated by the following examples.

As shown in fig. 1 and 2, the supercharger and the gear box are combined together by bolts to form a new assembly, the new assembly connects the motors together by a coupling, and the base is fixed on the base by the bolts, so that the base also has the function of an oil tank. The lubricating oil pump has two sets, all installs on the base that has the oil station, and the cooler is put behind the lubricating oil pump, according to setting up filter and governing valve behind the cooler. The lubricating oil flow of the whole set of device is that the lubricating oil is pumped out by an oil pump, then cooled by a cooler and then enters a filter, and the lubricating oil is filtered by the filter, and then the pressure of the lubricating oil is adjusted from 0.5MPa to 0.25MPa by self-operated adjustment and enters a lubricating oil main pipe to supply oil to a gear box, a motor and the like.

As shown in fig. 3, which is a sectional view of the volute of the turbocharger in the present structure, it can be seen from the figure that the volute adopts a Y-shaped structure, and a diffuser segment marked as 1.2 times of the diameter of the impeller at the outlet of the impeller is given at a in the figure.

As shown in fig. 4 and 5, the impeller is a backward-bent closed impeller, the impeller is a three-element twisted blade, the working flow channel is long in distance, and the working surface is wide; because the unit pressure ratio is large, the impeller is made of ASTM A705 stainless steel, the blades are formed by milling and integrated with the lower wheel disc, and the upper wheel cover and the lower wheel disc are formed by welding. The utility model discloses the product adopts closed ternary long blade impeller, and its work efficiency will be a lot of than binary impeller is efficient, meanwhile not only satisfies the requirement of the new technology of petrochemical trade, still can bring bigger benefit for the user.

In order to make the sealing effect of the supercharger better and the service life of the sealing element longer, the supercharger unit of the utility model is also provided with an exhaust wheel behind the sealing component at the rear part of the impeller, namely the exhaust wheel is arranged at the outer side of the sealing device at the contact part of the impeller and the volute of the supercharger; when the unit passes through the motor and drives the during operation, the impeller high-speed rotatory can produce the pressure that the gas on right side was given earlier on, gas can outwards reveal through sealed, arrange the wind wheel and also follow the pinion shaft high-speed rotation simultaneously, can make gas produce a pressure left, thereby make these two power offset each other, can make sealed effect show more, also can guarantee seal assembly's life simultaneously, thereby maintenance cost has been reduced, because sealed effectual, also can make the range of application of unit wider, the comprehensive properties of complete machine has been improved.

The utility model discloses a big pressure ratio whole sled dress booster compressor device concrete technological parameter as follows:

example 1

Flow rate: 36000Nm 3/h; inlet pressure: 0.34MPa (A); inlet temperature: 187 ℃; outlet pressure: 0.5MPa (A); impeller diameter: d =640 mm; pressure ratio: 1.47.

example 2

Flow rate: 48000Nm 3/h; inlet pressure: 0.35MPa (A); inlet temperature: 213 ℃; outlet pressure: 0.51MPa (A); impeller diameter: d =630 mm; pressure ratio: 1.46. .

Example 3

Flow rate: 22000Nm 3/h; inlet pressure: 0.24MPa (A); inlet temperature: 187 ℃; outlet pressure: 0.35MPa (A); impeller diameter: d =640 mm; pressure ratio: 1.458.

to sum up, compared with the supercharger device with an independent oil tank, the utility model firstly reduces the occupied area of the unit by about one time, and the early investment is relatively low; secondly, the oil inlet and the oil return of the whole set of unit are all around the oil station, so that the installation problem of pipelines is reduced; therefore, the cost of processing and production is reduced, and the assembly difficulty is reduced.

Claims (6)

1. The utility model provides a whole sled dress booster unit of big pressure ratio which characterized in that: the booster is fixed with the gear box through bolts and matched with the motor through a coupler; the base is internally provided with a cavity for containing lubricating oil, and the base is also provided with a lubricating oil pump for driving the circulation of the lubricating oil and a cooler for cooling the lubricating oil;

the booster includes a volute and an impeller located inside the volute.

2. The high pressure ratio monoblock skid charger device of claim 1, wherein: the volute is Y-shaped, and the blades on the impeller are backward-bent ternary twisted blades.

3. The high pressure ratio monoblock skid charger device of claim 1, wherein: the volute is a casting volute; the impeller is a stainless steel closed type two-piece welding and milling impeller.

4. The high pressure ratio monoblock skid charger device of claim 1, wherein: the lubricating oil pump and the cooler are arranged on one side of the base, and the cooler is arranged at the rear part of the lubricating oil pump.

5. The high pressure ratio monoblock skid charger device of claim 1, wherein: the rear part of the cooler is provided with a regulating valve.

6. The high pressure ratio monoblock skid charger device of claim 1, wherein: in the inside cavity of base, be provided with a plurality of support columns.

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