CN214945198U

CN214945198U - Anti-surge control device of centrifugal compressor

Info

Publication number: CN214945198U
Application number: CN202121160758.3U
Authority: CN
Inventors: 孙京山; 虞朝林; 叶谋泉; 徐亮
Original assignee: Lebo Engineering Hangzhou Co ltd
Current assignee: Lebo Engineering Hangzhou Co ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2021-11-30
Anticipated expiration: 2031-05-27

Abstract

The utility model discloses a centrifugal compressor surge-proof control device, including the compressor body, one side of compressor body is equipped with intake pipe and outlet duct, is equipped with the connecting pipe between intake pipe and the outlet duct, and the middle part of connecting pipe is equipped with fixed box, and the inside of fixed box is equipped with the fan, the top of connecting pipe is equipped with the solenoid valve, the intake pipe with the inside of outlet duct all is equipped with pressure sensor, one side welding of fixed box has the drive box. The utility model discloses a set up pressure sensor, solenoid valve and fan, pressure sensor monitors the gas outlet and the air inlet of compressor body, when pressure is uneven, opens the solenoid valve, makes the inside air of intake pipe and outlet duct flow through the connecting pipe to make gas outlet and air inlet pressure balance, can rotate through the fan simultaneously, further promotion circulation of air's efficiency makes pressure balance need the time shorter, falls to the minimum to the harm of compressor body.

Description

Anti-surge control device of centrifugal compressor

Technical Field

The utility model relates to a compressor technical field especially relates to a centrifugal compressor prevents breathing heavily controlling means.

Background

When the centrifugal compressor surging, the system can not work normally, the outlet pressure is reduced, when the outlet pressure is lower than the outlet pipeline system pressure, the gas flows back from the pipeline system to the interior of the centrifugal compressor, and when the pressure in the pipeline system is lower than the outlet pressure of the compressor, the backflow stops. The centrifugal compressor resumes operation, but when the pressure in the outlet piping system returns to the original value, the gas flow through the compressor is reduced again, repeating this, the whole system oscillates periodically, causing great damage to the seals, bearings and impellers and other ancillary facilities in the centrifugal compressor.

The existing compressor generally adopts a pressure sensing device to sense the pressure deviation of an outlet and an inlet, then opens a pressure relief electromagnetic valve through a controller to carry out pressure relief and keep balance, and the mode is single, so that the pressure relief balance cannot be effectively carried out.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an anti-surge control device of a centrifugal compressor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the anti-surge control device of the centrifugal compressor comprises a compressor body, wherein an air inlet pipe and an air outlet pipe are arranged on one side of the compressor body, a connecting pipe is arranged between the air inlet pipe and the air outlet pipe, a fixing box is arranged in the middle of the connecting pipe, a fan is arranged inside the fixing box, an electromagnetic valve is arranged at the top of the connecting pipe, and pressure sensors are arranged inside the air inlet pipe and the air outlet pipe.

Furthermore, a driving box is welded on one side of the fixing box, first through holes are formed in the top end and the top end of the driving box, a threaded rod is connected to the position of the first through holes in a rotating mode, a moving block is connected to the top end and the top end of the threaded rod in a threaded mode, baffles are welded to the top end and the top end of the moving block, and the two baffles extend to the air inlet pipe and the air outlet pipe respectively.

Furthermore, the inside of drive box is equipped with step motor, step motor's output shaft top with the gear has all been welded at the middle part of threaded rod, two gear engagement.

Furthermore, locating rods are welded at the top end and the top end of the fixing box, a sliding sleeve is connected to the outer portion of each locating rod in a sliding mode, and one side of the sliding sleeve is welded with the moving block.

Further, the pressure sensor is arranged at one end of the baffle.

Further, the top of intake pipe with the bar through-hole has all been seted up to the bottom of outlet duct, and bar through-hole department bonds and has had the rubber circle, the baffle runs through the bar opening.

Furthermore, two fixed blocks are welded at the top end of the air outlet pipe, and a rotating plate is rotatably connected between the two fixed blocks.

Furthermore, one side of the air inlet pipe is provided with a protective net.

The utility model has the advantages that:

1. the pressure sensor monitors the air outlet and the air inlet of the compressor body, when the pressure is unbalanced, the electromagnetic valve is opened, so that air in the air inlet pipe and the air outlet pipe can flow through the connecting pipe, the pressure of the air outlet and the pressure of the air inlet are balanced, meanwhile, the fan can rotate, the air circulation efficiency is further improved, the pressure balance time is shortened, and the damage to the compressor body is minimized;

2. by arranging the threaded rod, the movable block and the baffle plate, and rotating the threaded rod, the movable block can drive the baffle plate to move, so that the width of a flow passage of the air inlet pipe and the air outlet pipe is changed, and the balance of the pressure of two sides is facilitated;

3. through the arrangement of the stepping motor, the stepping motor can control the rotation of the threaded rod, so that the lengths of the two baffles entering the air inlet pipe and the air outlet pipe are controlled, and the width of the flow passage is convenient to change;

4. through the arrangement of the sliding sleeve, the positioning rod and the rubber ring, the sliding sleeve slides on the positioning rod, so that the moving stability of the baffle is improved, the air leakage at the connecting parts of the air inlet pipe, the air outlet pipe and the baffle is avoided, the sealing performance of the baffle, the air inlet pipe and the air outlet pipe can be improved through the rubber ring, and the air leakage of the air inlet pipe and the air outlet pipe is avoided;

5. through the arrangement of the rotating plate, when the air outlet pipe is exhausted, the rotating plate is pushed to rotate, so that the air outlet pipe is opened, and when the air outlet pipe flows backwards, the rotating plate automatically rotates due to gravity to close the air outlet pipe, so that the gas is prevented from flowing backwards;

6. through setting up the protection network, the protection network can prevent that the foreign matter from being inhaled by the compressor body, damaging the compressor.

Drawings

Fig. 1 is a front structural sectional view of an anti-surge control apparatus for a centrifugal compressor according to embodiment 1;

FIG. 2 is a schematic sectional view showing the surge suppressing apparatus for a centrifugal compressor in accordance with embodiment 1;

fig. 3 is a schematic cross-sectional view of an anti-surge control apparatus for a centrifugal compressor according to embodiment 2.

In the figure: the air conditioner comprises a main body 1, an air inlet pipe 2, a pressure sensor 3, a baffle 4, a connecting pipe 5, a positioning rod 6, a sliding sleeve 7, a moving block 8, a threaded rod 9, a fixed box 10, a fan 11, a stepping motor 12, a gear 13, a driving box 14, a rotating plate 15, a fixed block 16, an air outlet pipe 17, an electromagnetic valve 18 and a protective net 19.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1-2, an anti-surge control device for a centrifugal compressor comprises a compressor body 1, an air inlet pipe 2 and an air outlet pipe 17 are arranged on one side of the compressor body 1, a connecting pipe 5 is arranged between the air inlet pipe 2 and the air outlet pipe 17, a fixing box 10 is arranged in the middle of the connecting pipe 5, a fan 11 is arranged inside the fixing box 10, an electromagnetic valve 18 is arranged at the top of the connecting pipe 5, pressure sensors 3 are arranged inside the air inlet pipe 2 and the air outlet pipe 17, an air outlet and an air inlet of the compressor body 1 are monitored by the pressure sensors 3, when the pressure is unbalanced, the electromagnetic valve 18 is opened, so that the air inside the air inlet pipe 2 and the air outlet pipe 17 can flow through the connecting pipe 5, the pressure of the air outlet and the air inlet is balanced, meanwhile, the air circulation efficiency can be further improved by rotating the fan 11, and the time required for pressure balance is shorter, damage to the compressor body 1 is minimized.

Wherein, the welding of one side of fixed box 10 has drive box 14, first through-hole has all been seted up on the top and the top of drive box 14, first through-hole department rotates and is connected with threaded rod 9, the equal threaded connection in top and the top of threaded rod 9 has movable block 8, the welding has baffle 4 on the top and the top of movable block 8, two baffle 4 extend to the inside of intake pipe 2 and outlet duct 17 respectively, through rotating threaded rod 9, can make movable block 8 drive baffle 4 and remove, thereby change the runner width of intake pipe 2 and outlet duct 17, the balance of the pressure of both sides of being convenient for.

Wherein, the inside of drive box 14 is equipped with step motor 12, and step motor 12's output shaft top and the middle part of threaded rod 9 all weld gear 13, and two gear 13 meshes, can control threaded rod 9's rotation through step motor 12 to control two baffles 4 and get into the length of intake pipe 2 and outlet duct 17, be convenient for change the runner width.

Wherein, the locating lever 6 has all been welded on the top and the top of fixed box 10, and the outside sliding connection of locating lever 6 has sliding sleeve 7, and one side and the movable block 8 welding of sliding sleeve 7 slide on locating lever 6 through sliding sleeve 7 to promote the stability that baffle 4 removed, avoid intake pipe 2 and outlet duct 17 and baffle 4's junction gas leakage.

Wherein, the pressure sensor 3 is arranged at one end of the baffle 4, which is convenient for monitoring the gas pressure.

Wherein, the bar through-hole has all been seted up on the top of intake pipe 2 and the bottom of outlet duct 17, and bar through-hole department bonds there is the rubber circle, and baffle 4 runs through the bar opening, and the rubber circle can promote the leakproofness of baffle 4 and intake pipe 2 and outlet duct 17, avoids intake pipe 2 and outlet duct 17 to leak gas.

Wherein, the welding of the top of outlet duct 17 has two fixed blocks 16, rotates between two fixed blocks 16 to be connected with rotor plate 15, when outlet duct 17 went out the wind, can promote rotor plate 15 and rotate to open outlet duct 17, when outlet duct 17 took place the refluence, rotor plate 15 can be because gravity automatic rotation closes outlet duct 17, thereby avoids the gas refluence.

The working principle is as follows: the air outlet and the air inlet of the compressor body 1 are monitored through the pressure sensor 3, when the pressure is unbalanced, the electromagnetic valve 18 is opened, so that air in the air inlet pipe 2 and the air outlet pipe 17 can flow through the connecting pipe 5, the pressure of the air outlet and the pressure of the air inlet are balanced, meanwhile, the fan 11 can rotate, the air circulation efficiency is further improved, the time required for pressure balance is shortened, and the damage to the compressor body 1 is minimized;

by rotating the threaded rod 9, the movable block 8 can drive the baffle 4 to move, so that the width of a flow passage of the air inlet pipe 2 and the air outlet pipe 17 is changed, and the balance of the pressure of two sides is facilitated;

the rotation of the threaded rod 9 can be controlled by the stepping motor 12, so that the length of the two baffle plates 4 entering the air inlet pipe 2 and the air outlet pipe 17 is controlled, and the width of a flow passage is convenient to change;

the sliding sleeve 7 slides on the positioning rod 6, so that the moving stability of the baffle 4 is improved, and the air leakage at the connection part of the air inlet pipe 2 and the air outlet pipe 17 with the baffle 4 is avoided;

the rubber ring can improve the sealing performance of the baffle 4 and the air inlet pipe 2 and the air outlet pipe 17, and air leakage of the air inlet pipe 2 and the air outlet pipe 17 is avoided;

when the air outlet pipe 17 is blown out, the rotating plate 15 is pushed to rotate, so that the air outlet pipe 17 is opened, and when the air outlet pipe 17 flows backwards, the rotating plate 15 automatically rotates due to gravity to close the air outlet pipe 17, so that the gas backflow is avoided.

Example 2

Referring to fig. 3, compared to embodiment 1, in this embodiment, in order to increase the practicability of the apparatus, a protection net 19 is disposed on one side of the air inlet pipe 2, and the protection net 19 can prevent foreign matters from being sucked into the compressor body 1 to damage the compressor.

when the air outlet pipe 17 is exhausted, the rotating plate 15 is pushed to rotate, so that the air outlet pipe 17 is opened, and when the air outlet pipe 17 flows backwards, the rotating plate 15 automatically rotates due to gravity to close the air outlet pipe 17, so that the gas is prevented from flowing backwards;

the protection net 19 can prevent foreign matters from being sucked into the compressor body 1 to damage the compressor.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The anti-surge control device of the centrifugal compressor comprises a compressor body (1) and is characterized in that an air inlet pipe (2) and an air outlet pipe (17) are arranged on one side of the compressor body (1), a connecting pipe (5) is arranged between the air inlet pipe (2) and the air outlet pipe (17), a fixing box (10) is arranged in the middle of the connecting pipe (5), a fan (11) is arranged inside the fixing box (10), an electromagnetic valve (18) is arranged at the top of the connecting pipe (5), and pressure sensors (3) are arranged inside the air inlet pipe (2) and the air outlet pipe (17).

2. The anti-surge control device of the centrifugal compressor according to claim 1, wherein a driving box (14) is fixedly connected to one side of the fixing box (10), first through holes are formed in the top end and the top end of the driving box (14), a threaded rod (9) is rotatably connected to the first through holes, a moving block (8) is connected to the top end and the top end of the threaded rod (9) in a threaded manner, baffle plates (4) are fixedly connected to the top end and the top end of the moving block (8), and the two baffle plates (4) respectively extend to the inside of the air inlet pipe (2) and the air outlet pipe (17).

3. An anti-surge control device of a centrifugal compressor according to claim 2, wherein a stepping motor (12) is arranged inside the driving box (14), a gear (13) is fixedly connected to the top end of an output shaft of the stepping motor (12) and the middle part of the threaded rod (9), and the two gears (13) are meshed.

4. The surge-proof control device of the centrifugal compressor as claimed in claim 2, wherein the top end and the top end of the fixing box (10) are fixedly connected with a positioning rod (6), the outside of the positioning rod (6) is slidably connected with a sliding sleeve (7), and one side of the sliding sleeve (7) is welded with the moving block (8).

5. Surge-proof control device for a centrifugal compressor according to claim 2, characterized in that the pressure sensor (3) is at one end of the baffle (4).

6. The anti-surge control device of the centrifugal compressor according to claim 2, wherein the top end of the air inlet pipe (2) and the bottom end of the air outlet pipe (17) are both provided with strip-shaped through holes, rubber rings are bonded at the strip-shaped through holes, and the baffle plate (4) penetrates through the strip-shaped openings.

7. An anti-surge control device of a centrifugal compressor according to claim 1, wherein two fixed blocks (16) are fixedly connected to the top end of the outlet pipe (17), and a rotating plate (15) is rotatably connected between the two fixed blocks (16).

8. An anti-surge control device of a centrifugal compressor according to any of claims 1-7, characterized in that a protective net (19) is provided at one side of the inlet pipe (2).