CN112096599A - Compressor load adjustment undisturbed switching control device - Google Patents

Abstract

The purpose of the present invention is to provide a non-disturbance switching control device for compressor load adjustment, which is used to reduce the disturbance during the compressor switching process so as not to affect the production environment, including a non-disturbance switching unit, the number of non-disturbance switching units Equal to the number of compressors, the undisturbed switching unit includes: valve connectors and multi-way joints used to control whether the valve is inhaled or not. The number of valve connectors is equal to the number of compressor cylinder valves. The number of passages is 1 larger than the number of valve connectors. The intake passage of the multi-way joint is connected to the outlet end of the air source main pipe, and the remaining passages of the multi-way joint are respectively connected to the intake end of the valve connector, and the valve connector is air outlet. The end of the compressor is connected to the cylinder valve of the compressor to reduce the load of a single compressor. Multiple sets of non-disturbance switching units adjust the load of multiple compressors, so that the load reduction and increase are complementary. Switching does not affect the production environment.

Description

A disturbance-free switching control device for compressor load adjustment

technical field

The invention belongs to the technical field of compressor load adjustment, and in particular relates to a disturbance-free switching control device for compressor load adjustment.

Background technique

Gas compressors have a wide range of applications in the industry. Gas compressors are often used in the chemical industry. The commonly used compression mode is multi-stage compression. Compared with single-stage compression, multi-stage compression can effectively reduce the compressor. Exhaust temperature, saving power consumption, improving the utilization rate of cylinder volume, reducing the maximum gas force on the piston and many other advantages. In most use environments, the compressor needs to work at 100% load. The load of the compressor is affected by the compressor cylinder valve. One valve represents the primary compression. The number is 2, and each stage of compression is equivalent to 50% of the load. If the compressor works at 100% load for too long, it may cause damage to the internal core components of the compressor. Therefore, a backup compressor is often equipped to replace the main compressor. Two or more compressors work together in turn. Greatly improves the safety and prolongs the service life of the compressor. However, by setting two compressors as backup for each other, although the problem that a single compressor cannot work for a long time can be solved, in the process of switching between two compressors, one needs to be stopped first, and then the other one needs to be turned on. For the compressor, there is a gear break in such a switching process, which will cause great disturbance to the production environment, which is not conducive to production. Therefore, it is necessary to develop a disturbance-free switching control device for compressor load adjustment.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a disturbance-free switching control device for compressor load adjustment, which is used to reduce disturbances in the compressor switching process so as not to affect the production environment.

The technical solution of the present invention to solve the technical problem is as follows: a non-disturbance switching control device for compressor load adjustment, comprising a non-disturbance switching unit, the number of the non-disturbance switching units is equal to the number of compressors, and the non-disturbance switching unit is equal to the number of compressors. The switching unit includes: a valve connector for controlling whether the valve is inhaled, a multi-port joint, and an air source manifold, the number of the valve connector is equal to the number of the compressor cylinder valves, and the number of passages of the multi-port connector is The number is 1 larger than the number of valve connectors. The intake passage of the multi-way joint is connected to the outlet end of the air source manifold, and the remaining passages of the multi-way joint are respectively connected to the intake end of the valve connector. The The outlet end of the valve connector is connected with the compressor cylinder valve.

The valve connector includes: a terminal joint, a short joint and a three-way valve, the outlet end of the terminal joint is connected with the intake end of the compressor cylinder valve, and the intake end of the terminal joint is connected to the three-way valve through the short joint One of the remaining two paths of the three-way valve is connected to the corresponding one of the multi-way joints, and the other is connected to the atmosphere.

The compressed air delivered from the large air compressor station often contains water. In order to deposit the moisture in the compressed air entering from the air source main pipe, an air source storage tank is also included. The air inlet end of the air source storage tank is connected to the air source main pipe. The air outlet end is communicated, the air outlet end of the air source storage tank is communicated with the air inlet passage of the multi-way joint, and the air source storage tank is provided with a drain valve for discharging the accumulated water of the air source storage tank.

The compressed air delivered from the large air compressor station often also contains desiccant. In order to filter the compressed air and make it meet the production requirements, it also includes a filter, the air inlet end of the filter and the air outlet end of the air source storage tank The air outlet end of the filter communicates with the air inlet passage of the multi-port joint.

In order to adjust and stabilize the pressure of the compressed air, so that the air entering the cylinder valve of the compressor meets the requirements and is stable, a pressure reducing valve is also included. The intake end of the pressure reducing valve is connected with the air outlet end of the filter. The outlet end is communicated with the inlet passage of the multi-way joint.

The beneficial effects of the present invention are: by setting up a non-disturbance switching unit composed of a valve connecting piece for controlling whether the valve is intake air and a multi-pass joint, the number of the valve connecting piece is the same as that of the compressor cylinder valve, and the no-disturbance switching unit is A passage is formed between the multi-pass joint and the air source main pipe, so as to realize the load reduction of a single compressor, and through multiple sets of non-disturbance switching units to adjust the load of multiple compressors, so that the load reduction and the load increase are complementary, so that the total load position is 100 %, there is no need to stop the whole switching process, so that the switching of the compressor does not affect the production environment; by setting the air source storage tank, the moisture in the compressed air is deposited and periodically discharged through the drain valve; by setting the filter, the compressed air is cleaned. Filter; adjust and stabilize the pressure of compressed air by setting the pressure reducing valve.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic block diagram of the gas circuit of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 , the present invention includes a non-disturbance switching unit, the number of the non-disturbance switching units is equal to the number of compressors, and the non-disturbance switching unit includes: a valve connector for controlling whether the valve is intake air , a multi-port joint 1, an air source manifold 2, the number of the valve connectors is equal to the number of the compressor cylinder valves 3, the number of passages of the multi-port connector 1 is 1 larger than the number of valve connectors, The intake passage of the multi-port joint 1 is connected to the outlet end of the air source manifold 2, and the remaining passages of the multi-port joint 1 are respectively connected to the intake end of the valve connector, and the outlet end of the valve connector is connected to the compressor. The engine cylinder valve 3 is connected.

The valve connector includes: a terminal joint 4, a short joint 5, and a three-way valve 6. The outlet end of the terminal joint 4 is connected to the intake end of the compressor cylinder valve 3, and the intake end of the terminal joint 4 passes through. The short joint 5 is communicated with one channel of the three-way valve 6 , and one of the remaining two channels of the three-way valve 6 is communicated with a corresponding channel in the multi-way connector 1 , and the other channel is communicated with the atmosphere.

The compressed air delivered from the large-scale air compressor station often contains water. In order to deposit the moisture in the compressed air entering from the air source main pipe 2, an air source storage tank 7 is also included. The air outlet end of the main source pipe 2 is communicated, the air outlet end of the air source storage tank 7 is communicated with the intake passage of the multi-way joint 1, and the air source storage tank 7 is provided with a drainage for discharging the accumulated water of the air source storage tank 7 valve 8.

The compressed air delivered from the large air compressor station often also contains desiccant. In order to filter the compressed air and make it meet the production requirements, a filter 9 is also included, and the air inlet end of the filter 9 is connected to the air source storage tank 7 The outlet end of the filter 9 is communicated with the air inlet passage of the multi-way joint 1 .

In order to adjust and stabilize the pressure of the compressed air so that the air entering the cylinder valve of the compressor meets the requirements and is stable, a pressure reducing valve 10 is also included. The outlet end of the pressure reducing valve 10 communicates with the intake passage of the multi-port joint 1 .

The principle adopted in the present invention is as follows: the non-disturbance switching unit is used to close some of the compressor cylinder valves 3, so that the number of stages of multi-stage compression of one of the compressors is reduced, and the other compressor is turned on at the same time. The non-disturbance switching unit closes some of the compressor cylinder valves 3 to reduce the multi-stage compression stages of the second compressor. The total number of compressor cylinder valves 3 opened by the two compressors is equal to the one compressor cylinder valve 3 fully opened. The total number of stages of multi-stage compression performed by the two compressors remains unchanged; then all valves of the first compressor are closed, and all valves of the second compressor are opened to complete the switching of the two compressors. .

In the following, two compressors of the same model (corresponding to two sets of undisturbed switching units) are set up, the number of cylinder valves 3 of each compressor is 2 (corresponding to two-stage compression), and the multi-way joint 1 of each undisturbed switching unit The working process and principle are described in detail under the condition that the number of tee joints and valve connecting pieces is 2.

First, the first compressor runs for 10-15 minutes to reach 100% load working condition. At this time, the gas in the gas source main pipe 2 deposits moisture through the gas source storage tank 7 in turn, is filtered by the filter 9, and passes through the pressure reducing valve. 10. After adjusting the stable pressure, enter the two valve connectors through the three-way joint respectively. At this time, the two three-way valves 6 in the two valve connectors are closed to the atmosphere, and the gas enters through the short joint 5 and the terminal joint 4. Compressor cylinder valve 3;

When the compressor needs to be switched, the passage connecting the three-way valve 6 in one of the valve connectors to the valve is closed, and the passage connecting to the atmosphere is opened, so that the first compressor performs single-stage compression, that is, at 50 Working under % load, because the air volume of the air source main pipe 2 is constant, the valve cannot be simply closed, so half of the compressed air is discharged into the atmosphere through the three-way valve 6; In a set of undisturbed switching units, the passage connecting the three-way valve 6 in one of the valve connectors to the valve is also closed, and the passage connecting to the atmosphere is opened, so that the second compressor also performs single-stage compression, that is, at 50 % load work, the total load of the two compressors is 100%;

When the second compressor runs stably, turn off the first compressor, and at the same time, close all the passages connecting the three-way valve 6 in the two valve connectors of the second compressor with the atmosphere, so that both valves are put into operation. Use, reach 100% load, complete the switching of the compressor.

For different types of compressors, the number of compressor cylinder valves 3 is also different. When the number of valves increases, the number of required valve connectors also needs to increase correspondingly. In the present invention, 50% load is used as the transition. If the number of cylinder valves is 4 (4 stage compression), the transition is carried out at 25% load each time, which is more stable. It should be noted that the non-disturbance mentioned in the present invention refers to no impact on the production environment, and there is no absolute no disturbance. When the compressor is switched, it is inevitable to generate disturbance, but because the device does not need to be shut down in the middle, it does not affect the production environment.

By setting up a non-disturbance switching unit composed of a valve connector for controlling whether the valve is intake air and a multi-way joint, the number of valve connectors is the same as the number of compressor cylinder valves, and the non-disturbance switching unit is connected to the air source through the multi-way joint. The main pipe forms a passage, so as to reduce the load of a single compressor, and adjust the load of multiple compressors through multiple sets of non-disturbance switching units, so that the load reduction and the increase of load complement each other, so that the total load position is 100%, and the whole switching process does not change. It needs to be shut down so that the switching of the compressor does not affect the production environment; by setting the air source storage tank, the moisture in the compressed air is deposited and periodically discharged through the drain valve; by setting the filter, the compressed air is filtered; by setting the pressure reducing valve , regulate and stabilize the pressure of compressed air.

Claims (5)

1. A non-disturbance switching control device for compressor load adjustment is characterized in that: comprising a non-disturbance switching unit, the number of the non-disturbance switching unit is equal to the number of the compressor, and the non-disturbance switching unit comprises: For the valve connectors, multi-port joints, and air source manifolds that control whether the valve is inhaled, the number of the valve connectors is equal to the number of the compressor cylinder valves, and the number of passages of the multi-port connectors is higher than that of the valve connectors. The number is larger than 1, the intake passage of the multi-way joint is connected with the outlet end of the air source main pipe, the remaining passages of the multi-way joint are respectively connected with the intake end of the valve connector, and the air outlet of the valve connector is connected. The end is connected with the compressor cylinder valve. 2 . The non-disturbance switching control device for compressor load adjustment according to claim 1 , wherein the valve connector comprises: a terminal joint, a short joint, and a three-way valve, and the gas outlet end of the terminal joint is connected to a 3-way valve. 3 . The intake end of the compressor cylinder valve is connected, the intake end of the terminal joint is communicated with one channel of the three-way valve through a short joint, and one of the remaining two channels of the three-way valve is communicated with a corresponding one of the multi-way joints. , and the other way is connected to the atmosphere. 3 . The disturbance-free switching control device for compressor load adjustment according to claim 1 , further comprising an air source storage tank, the air inlet end of the air source storage tank being communicated with the air outlet end of the air source main pipe. 4 . The air outlet end of the air source storage tank is communicated with the air inlet passage of the multi-way joint, and the air source storage tank is provided with a drain valve for discharging the accumulated water of the air source storage tank. 4. A disturbance-free switching control device for compressor load adjustment according to claim 3, characterized in that it further comprises a filter, the air inlet end of the filter is communicated with the air outlet end of the air source storage tank, the The air outlet end of the filter communicates with the air inlet passage of the multi-port joint. 5 . The undisturbed switching control device for compressor load adjustment according to claim 3 , further comprising a pressure reducing valve, the air inlet end of the pressure reducing valve is communicated with the air outlet end of the filter, and the The outlet end of the pressure reducing valve is communicated with the inlet passage of the multi-way joint.

Images