CN203214435U

CN203214435U - Booster with improved pressure shell support ribs

Info

Publication number: CN203214435U
Application number: CN 201320224778
Authority: CN
Inventors: 孟伟
Original assignee: Shanghai MHI Turbocharger Co Ltd
Current assignee: Shanghai MHI Turbocharger Co Ltd
Priority date: 2013-04-27
Filing date: 2013-04-27
Publication date: 2013-09-25
Anticipated expiration: 2023-04-27

Abstract

The utility model relates to the technical field of machinery, in particular to a booster with improved pressure shell support ribs. The booster with improved pressure shell support ribs comprises a pressure shell, and is characterized in that the inner ring of the pressure ring is provided with a first support rib, a second support rib and a third support rib respectively, wherein the central angles, corresponding to a circle center, of the two ends of the pitch of the first support rib are 110 degrees; the central angles, corresponding to the circle center, of the two ends of the pitch of the second support rib are 120 degrees; and the central angles, corresponding to the circle center, of the two ends of the pitch of the third support rib are 130 degrees. Compared with the prior art, the booster has the advantages that the three support ribs are distributed at unequal intervals instead of being distributed at equal intervals originally, and the heights of the support ribs are reduced, so that the risk of resonance is lowered, and the probability of damaging a pressure wheel on the normal workspace of the booster is lowered.

Description

A kind of pressurized machine that improves the pressure shell supporting rib

Technical field

The utility model relates to field of mechanical technique, specifically a kind of pressurized machine that improves the pressure shell supporting rib.

Background technique

Three supporting ribs on the pressure shell of tradition pressurized machine are equally distributed, and the height of three supporting ribs is all than higher, and in the certain range of operation of pressurized machine, pulse frequency can be owing to the wake flow from supporting rib uprises, increase the risk of resonance, thereby increased the possibility of pinch roller breakage.

Summary of the invention

The utility model is for overcoming the deficiencies in the prior art, having three supporting ribs that originally evenly are equally spaced to change into is not equally spaced, and reduce the height of supporting rib, thereby reduced the risk of resonance, reduced the possibility of the normal operation interval upper pressure wheel of pressurized machine breakage.

For achieving the above object, design a kind of pressurized machine that improves the pressure shell supporting rib, comprise pressure shell, it is characterized in that: be respectively equipped with first supporting rib, second supporting rib, the 3rd supporting rib at the pressure shell inner ring, the central angle in the corresponding center of circle, the pitch two ends of described first supporting rib is 110 °, the central angle in the corresponding center of circle, the pitch two ends of second supporting rib is 120 °, and the central angle in the corresponding center of circle, the pitch two ends of the 3rd supporting rib is 130 °.

The upper surface of described first supporting rib, second supporting rib, the 3rd supporting rib is 50.9 millimeters to the height of lower bottom part.

Described first supporting rib, second supporting rib, the 3rd supporting rib are that concentric annular is arranged.

The utility model is compared with prior art, has three supporting ribs that originally evenly are equally spaced to change into and is not equally spaced, and reduce the height of supporting rib, thereby reduced the risk that resonates, and has reduced the possibility of the normal operation interval upper pressure wheel of pressurized machine breakage.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is the structural representation of traditional pressurized machine pressure shell.

Fig. 3 is the utility model structure side view.

Fig. 4 is the structure side view of traditional pressurized machine pressure shell.

Referring to Fig. 1,1 is pressure shell, and 2 is first supporting rib, and 3 is second supporting rib, and 4 is the 3rd supporting rib.

Embodiment

With reference to the accompanying drawings the utility model is described further below.

As shown in Figure 1, be respectively equipped with first supporting rib 2, second supporting rib 3, the 3rd supporting rib 4 at pressure shell 1 inner ring, the central angle in the corresponding center of circle, the pitch two ends of described first supporting rib 2 is 110 °, the central angle in the corresponding center of circle, the pitch two ends of second supporting rib 3 is 120 °, and the central angle in the corresponding center of circle, the pitch two ends of the 3rd supporting rib 4 is 130 °.

As shown in Figure 3, the upper surface of first supporting rib 2, second supporting rib 3, the 3rd supporting rib 4 is 50.9 millimeters to the height of lower bottom part.

First supporting rib 2, second supporting rib 3, the 3rd supporting rib 4 are arranged for concentric annular.

As Fig. 2, shown in Figure 4, the tradition pressurized machine pressure shell on three supporting ribs be 120 ° equally distributed, and the height of three supporting ribs is all than higher, be 60.9 millimeters, in the certain range of operation of pressurized machine, pulse frequency can be owing to the wake flow from supporting rib uprises, increase the risk of resonance, thereby increased the possibility of pinch roller breakage.

By changing the distribution of three supporting ribs, equidistant evenly distribute by original 120 °, change into not being equally spaced of 110 °, 120 ° and 130 °, and reduce the height of three supporting ribs, thereby reduced the risk of resonance, reduced the possibility of the normal operation interval upper pressure wheel of pressurized machine breakage.

Claims

1. pressurized machine that improves the pressure shell supporting rib, comprise pressure shell, it is characterized in that: be respectively equipped with first supporting rib (2), second supporting rib (3), the 3rd supporting rib (4) at pressure shell (1) inner ring, the central angle in the corresponding center of circle, the pitch two ends of described first supporting rib (2) is 110 °, the central angle in the corresponding center of circle, the pitch two ends of second supporting rib (3) is 120 °, and the central angle in the corresponding center of circle, the pitch two ends of the 3rd supporting rib (4) is 130 °.

2. a kind of pressurized machine that improves the pressure shell supporting rib according to claim 1, it is characterized in that: the upper surface of described first supporting rib (2), second supporting rib (3), the 3rd supporting rib (4) is 50.9 millimeters to the height of lower bottom part.

3. a kind of pressurized machine that improves the pressure shell supporting rib according to claim 1 is characterized in that: described first supporting rib (2), second supporting rib (3), the 3rd supporting rib (4) are that concentric annular is arranged.