CN220566277U - Anti-surge clutch device of unit - Google Patents

Abstract

The utility model belongs to the technical field of anti-surge control devices, and particularly relates to an anti-surge clutch device of a unit, which comprises: the device comprises a motor, a control system, a clutch, an electromagnetic valve, a flow temperature sensor, a pressure sensor, a check valve, a centrifugal compressor and a fan prying seat; the motor shaft end is connected with one end of a clutch, the other end of the clutch is connected with an impeller shaft of the centrifugal compressor, an electromagnetic valve is arranged on a bypass pipeline between an air outlet of the centrifugal compressor and a check valve, the check valve is arranged at the upper end of the air outlet of the centrifugal compressor, and a flow temperature sensor is arranged on an air inlet pipeline of the centrifugal compressor; the unit realizes the start or stop of the control unit by controlling the rapid separation and combination functions of the clutch, effectively avoids the surge of the unit and protects the unit.

Description

Anti-surge clutch device of unit

Technical Field

The utility model relates to the technical field of anti-surge, in particular to an anti-surge clutch device of a unit.

Background

When the compressor or the blower unit works, the gas at the gas inlet end is compressed and supplied to the production process from the gas outlet end; when the air consumption of the production process is reduced, the pressure at the air outlet end of the unit is increased, the compressed air in the unit cannot be normally discharged, so that the air intake of the air inlet is reduced, and when the air intake is reduced to a certain degree, the surge phenomenon can occur; in some cases, the downstream gas-using equipment is frequently started and stopped in a short time, the emptying valve is frequently opened and closed, the gas flow and the pressure fluctuation amplitude of the unit are large, and the unit is extremely easy to surge. When surge occurs, the surge is usually expressed as rapid pressure and flow oscillation, namely, the flow and the pressure of the unit are in extremely unstable states, reverse axial thrust and gas flow can be generated, and the safe operation of the unit is seriously affected.

At present, anti-surge control is mainly divided into two types: one is fixed limit flow control and the other is variable limit flow anti-surge control. The fixed limit flow control is to make the inlet air flow larger than a certain value flow so as to avoid entering the surge region for operation, but the energy consumption is larger and the application range is not wide when the impeller runs under low load. The variable limit flow anti-surge control is to keep the proper safety margin between the intake air flow and the limit surge flow all the time, and the anti-surge regulator runs along the safety control line on the right side of the surge limit flow curve, but the design of the method is more complex, and various parameters need to be considered to be applied to the operation of the centrifugal compressor with variable rotating speed.

Disclosure of Invention

Aiming at the problems in the prior art, the anti-surge clutch device for the unit provided by the utility model predicts the possibility of surge occurrence in advance through the control system, so that the clutch is controlled to make an avoidance action, the surge of the unit is effectively avoided, and the unit is protected.

In order to solve the problems, the utility model adopts the following technical scheme.

The utility model discloses an anti-surge clutch device of a unit, which relates to the technical field of anti-surge control devices and comprises a motor, a control system, a clutch, an electromagnetic valve, a flow temperature sensor, a pressure sensor, a check valve, a centrifugal compressor and a fan prying seat. The utility model provides a centrifugal compressor, including motor, control system, centrifugal compressor, clutch, centrifugal compressor, motor, control system, centrifugal compressor, motor shaft's one end is connected with clutch movable disc one end, clutch stationary disc one end is connected with centrifugal compressor impeller hub connection, the solenoid valve is installed on the bypass pipe between centrifugal compressor gas outlet and check valve, flow temperature sensor installs on centrifugal compressor air inlet pipeline, pressure sensor installs on the check valve gas outlet pipeline, control system includes: the sensor signal is transmitted to the controller through the analog quantity input module, and the controller output signal controls the clutch through the analog quantity output module; the clutch comprises an outgoing line, a magnetic yoke, a retainer ring, a movable disk, an armature, a spring piece, a friction plate and a static disk, wherein the outgoing line is connected with a magnetic yoke coil, the magnetic yoke and the armature form an electromagnet, the movable disk is integrated with the outgoing line, the magnetic yoke and the retainer ring, the spring piece is combined with the armature, and the static disk is integrated with the armature, the spring piece and the friction plate;

further: and the flow, temperature and pressure signals are transmitted to the controller through the analog quantity input module to operate, when the operation value reaches the surge set value, the output signal of the controller controls the outgoing line of the clutch to lose electricity through the analog quantity output module, the magnet yoke releases the armature, the movable disc is separated from the static disc, the impeller stops rotating, and the unit stops working.

Further: the flow temperature and pressure signals are output to the controller through the analog quantity input module to operate, when the operation value is smaller than the surge set value, the output signal of the controller controls the outgoing line of the clutch to be electrified through the analog quantity output module, the magnet yoke is attracted to the armature, the movable disc is combined with the static disc, the impeller rotates, and the unit works normally.

Further: the clutch is a normally open type electric control clutch.

Further: the unit is a blower or a compressor.

Compared with the prior art, the utility model has the advantages that:

the sensor is used for collecting signals of the unit, the control system is used for reading the sensor signals, the possibility that surge occurs is predicted in advance by the control system, the unit is started or stopped by controlling the rapid separation and combination functions of the clutch, the unit is effectively prevented from surge, and the unit is protected.

Drawings

FIG. 1 is a schematic diagram of a unit system of an anti-surge clutch device of the unit of the present utility model.

Fig. 2 is a schematic structural view of the electromagnetic clutch of the present utility model.

The reference numerals in the figures illustrate:

1. a motor; 2. a control system; 3. a clutch; 4. an electromagnetic valve; 5. a flow rate temperature sensor; 6. a pressure sensor; 7. a check valve; 8. a centrifugal compressor; 9. a blower prying seat; 10. a lead-out wire; 11. a yoke; 12. a retainer ring; 13. a movable plate; 14. an armature; 15. a spring piece; 16. a friction plate; 17. and (5) a static disc.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.

Referring to fig. 1, an anti-surge clutch device of a unit includes: the device comprises a motor 1, a control system 2, a clutch 3, an electromagnetic valve 4, a flow temperature sensor 5, a pressure sensor 6, a check valve 7, a centrifugal compressor 8 and a fan pry seat 9; the motor 1, the control system 2 and the centrifugal compressor 8 are arranged on the blower prying seat 9, the shaft end of the motor 1 is connected with one end of the clutch 3, the other end of the clutch 3 is connected with the impeller shaft of the centrifugal compressor 8, the electromagnetic valve 4 is arranged on a bypass pipeline between the air outlet of the centrifugal compressor 8 and the check valve 7, the flow temperature sensor 5 is arranged on an air inlet pipeline of the centrifugal compressor 8, the check valve 7 is arranged at the upper end of an outlet of the centrifugal compressor 8, the pressure sensor 6 is arranged on an air outlet pipeline of the check valve 7, and the flow temperature sensor 5 and the pressure sensor 6 are used for collecting flow, temperature and pressure signals when the unit works.

The control system 2 comprises a controller, an analog quantity input module, an analog quantity output module and a digital quantity input/output module, wherein the controller reads flow, temperature and pressure signals acquired by the flow temperature sensor 5 and the pressure sensor 6 during the working of the unit through the analog quantity input module, and sends the read result to the clutch 3 through the analog quantity output module so as to realize the control of the clutch 3; the controller also collects a state signal of the clutch 3 through the digital input/output module.

Referring to fig. 2, the clutch 3 comprises an outgoing line 10, a magnetic yoke 11, a retainer ring 12, a movable disk 13, an armature 14, a spring piece 15, a friction plate 16 and a static disk 17, wherein one end of the outgoing line 10 is connected with an analog output module, the magnetic yoke 11 and a coil are combined into an electromagnet, the armature 14 is fixed on the friction plate 16, one end of the spring piece 15 is installed on the static disk 17, the friction plate 16 is combined with the static disk 17 through the spring piece 15, and the magnetic yoke 11 can attract or release the armature 14.

Further, the outgoing line 10 of the clutch 3 receives a signal sent by the analog output module, and controls the magnetic yoke 11 to be separated from or combined with the armature 14; when the control system 2 detects that the flow, temperature and pressure signals reach the surge set value, the analog output module sends the signals to the outgoing line 10, the outgoing line 10 is powered off at the moment, the armature 14 is released, the movable disc 13 is separated from the static disc 17, the impeller of the centrifugal compressor 8 stops rotating, and the unit stops working; when the flow, temperature and pressure signals detected by the control system 2 are smaller than the set values, the control system 2 controls the lead-out wire 10 of the clutch 3 to be electrified, the armature 14 is attracted, the movable disc 13 is combined with the static disc 17, the impeller of the centrifugal compressor 8 rotates, and the unit works.

The unit anti-surge clutch device controls the motor 1 to drive the impeller of the centrifugal compressor 8 through the functions of signal acquisition, operation processing and separation and combination of the clutch 3, and under the condition that the motor 1 operates normally, the frequent start-stop surge phenomenon of the gas utilization system is effectively prevented, so that the unit is ensured to be in a normal working state. The working process of the unit anti-surge clutch device of the embodiment of the utility model is described in detail below.

When the gas system is frequently started and stopped in a short time, the pressure of a gas outlet of the unit is increased, the flow of an air suction port is suddenly reduced, the flow temperature sensor 5 and the pressure sensor 6 collect unit flow, temperature and pressure signals in an unstable operation state of the unit in a high pressure ratio area, a controller calculates and judges the collected signals, when the surge set value is reached, the output signal of the controller controls the outgoing line 10 of the clutch 3 to lose power through an analog output module, a movable disc 13 is separated from a static disc 17, an impeller of the centrifugal compressor 8 stops rotating, a check valve 7 is closed, the phenomenon of backflow of compressed air in a pipeline is prevented, an electromagnetic valve 4 is opened, the inlet pressure and the outlet pressure of the unit are the same, the occurrence of surge is avoided, and the safety of the unit is ensured; when the flow, temperature and pressure signals of the unit are smaller than the set values, the output signals of the controller control the outgoing line 10 of the clutch 3 to be powered through the analog output module, the movable disc 13 is combined with the static disc 17, the unit is started to operate, and the electromagnetic valve 4 is closed.

The above is only a preferred embodiment of the present utility model; the scope of the utility model is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present utility model, and the technical solution and the improvement thereof are all covered by the protection scope of the present utility model.

Claims (4)

1. An anti-surge clutch device of a unit is characterized in that; the device comprises a motor (1), a control system (2), a clutch (3), an electromagnetic valve (4), a flow temperature sensor (5), a pressure sensor (6), a check valve (7), a centrifugal compressor (8) and a fan prying seat (9); the shaft end of the motor (1) is connected with one end of the clutch (3), the other end of the clutch (3) is connected with an impeller shaft of the centrifugal compressor (8), the electromagnetic valve (4) is arranged on a bypass pipeline between an air outlet of the centrifugal compressor (8) and the check valve (7), the flow temperature sensor (5) is arranged on an air inlet pipeline of the centrifugal compressor (8), the check valve (7) is arranged at the upper end of an air outlet of the centrifugal compressor (8), and the pressure sensor (6) is arranged on an air outlet pipeline of the check valve (7); the unit is started or stopped by controlling the separation and combination of the clutch (3).

2. The unit anti-surge clutch device according to claim 1, wherein: the control system (2) comprises a controller, an analog quantity input module, an analog quantity output module and a digital quantity input and output module, wherein the analog quantity input module reads the flow, the temperature and the pressure of the flow temperature sensor (5) and the pressure sensor (6) when the unit works.

3. The unit anti-surge clutch device according to claim 2, wherein: the clutch (3) comprises an outgoing line (10), a magnetic yoke (11), a retainer ring (12), a movable disc (13), an armature (14), a spring piece (15), a friction plate (16) and a static disc (17), wherein one end of the outgoing line (10) is connected with an analog output module, the armature (14) is fixed on the friction plate (16), one end of the spring piece (15) is arranged on the static disc (17), the friction plate (16) is combined with the static disc (17) through the spring piece (15), and the magnetic yoke (11) can attract or release the armature (14).

4. A unit anti-surge clutch device according to claim 3, wherein: the clutch (3) is a normally open type electric control clutch.