Energy-saving air compression station system

Abstract

An energy-saving air compression station system comprises a variable frequency air compressor used for sucking and compressing ambient air and outputting pressurized compressed air to the outside; the air inlet end of the air storage tank is communicated with the air outlet end of the variable-frequency air compressor; the air inlet end of the water removal filter is communicated with the air outlet end of the air storage tank; the air inlet end of the high-temperature freeze dryer is communicated with the air outlet end of the water removal filter; the air inlet end of the oil removal filter is communicated with the air outlet end of the high-temperature freeze dryer; the air inlet end of the blast heat adsorption type dryer is communicated with the air outlet end of the oil removal filter; and the air inlet end of the dust removal filter is communicated with the air outlet end of the blast heat adsorption type dryer. The energy-saving air compression station system is simplified in structure, smaller in occupied space and more energy-saving and electricity-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of compressed air processing, in particular to an air compression station system. Background Art

[0002] Compressed air is an important power widely used in various fields of industry. The air compressor station system is established to obtain high-quality compressed air.

[0003] The Chinese utility model patent with the authorization announcement number CN201916154U discloses an air compressor station system, the structure of which is as follows: Figure 1 As shown, it includes an air compressor 1a and a purification and drying component connected to the air outlet of the air compressor 1a; the purification and drying component includes a wet tank 2a, an oil removal filter 3a, a freeze dryer 4a, a high-efficiency filter 5a, a precision filter 6a, a micro-heat regeneration dryer 7a, a dust removal filter 8a, and a dry tank 9a connected in sequence; the air compression station system reduces the temperature of the compressed air through the cooling capacity provided by the purification and drying component and the matching filter, so that water, oil and dust in the compressed air are separated and discharged from the air, so as to achieve the purpose of making the compressed air dry and clean.

[0004] However, the existing air compressor station system still has the following technical problems: no dedicated and efficient water removal device is set before the freeze dryer 4a, and only the wet tank 2a is used to remove part of the moisture. The main function of the wet tank 2a is to store gas, and the efficiency of water removal is low. Therefore, the existing air compressor station system preferably sets two wet tanks 2a, and the wet tanks 2a need to be placed outdoors to increase the number of wet tanks 2a and obtain a lower external temperature to improve the water removal efficiency. However, due to the large size of the wet tank 2a, setting two will greatly increase the system's occupied area, which is not conducive to the miniaturization of the system. Placing the wet tank 2a for outdoor use also limits the system's usage scenarios, making it very inconvenient to use. Even if two wet tanks 2a are set and installed outdoors, the water removal efficiency is still poor, which will still increase the load of the subsequent freeze dryer 4a, resulting in a high system failure rate and energy consumption. Large; secondly, the existing air compressor station system also allows the treated compressed air to enter the dry tank 9a uniformly, and then transport it to the gas use point to ensure a stable supply of gas. On the basis of the preferred arrangement of two wet tanks 2a, a dry tank 9a is added, which undoubtedly further increases the occupied area of ​​the system; thirdly, an oil removal filter 3a, a high-efficiency filter 5a, a precision filter 6a and a dust removal filter 8a are set, a total of four filters, the number of filters is large, the resistance to compressed air is large, part of the energy consumption is lost, and it is not energy-saving enough; in addition, a micro-heat regeneration dryer 7a is used. When one adsorption tower is performing adsorption drying under working pressure, the other adsorption tower needs to extract a certain amount of compressed air from the main pipeline of the system to remove water vapor, which loses part of the gas and increases energy consumption. It is heated as a regeneration gas for micro-heat regeneration, and the system energy consumption will also increase when the heater is working. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an energy-saving air compressor station system with a simplified structure, smaller occupied space and significantly reduced energy consumption.

[0006] The technical solution of the utility model is: an energy-saving air compressor station system, which includes:

[0007] Variable frequency air compressor, which is used to inhale ambient air and compress it, and then output pressurized compressed air to the outside;

[0008] An air storage tank, the air inlet end of which is connected to the air outlet end of the variable frequency air compressor, is used to temporarily store and cool the compressed air discharged by the variable frequency air compressor;

[0009] A water removal filter, the air inlet end of which is connected to the air outlet end of the air storage tank, is used for preliminary filtering of the compressed air;

[0010] A high-temperature freeze dryer, the air inlet of which is connected to the air outlet of the water removal filter, is used to cool and dry the compressed air;

[0011] An oil removal filter, the air inlet of which is connected to the air outlet of the high-temperature freeze dryer, is used for performing a second filtration on the compressed air;

[0012] The air-blast heat adsorption dryer has an air inlet connected to an air outlet of the oil removal filter and is used to deeply heat and dry the compressed air;

[0013] The dust removal filter, whose air inlet end is connected to the air outlet end of the blast heat adsorption dryer, is used for the final step of filtering the compressed air.

[0014] The working principle of this utility model energy-saving air compressor station system is as follows:

[0015] The variable frequency air compressor inhales ambient air and compresses it, and then outputs pressurized compressed air to the outside; the compressed air output by the variable frequency air compressor enters the air storage tank, which is used to temporarily store the compressed air discharged by the variable frequency air compressor and perform preliminary cooling on the compressed air; the compressed air after cooling and gas-liquid separation in the air storage tank enters the dehydration filter, which is used to perform rough separation on the compressed air, mainly for dehydration, and also removes some oil and dust; the compressed gas filtered by the dehydration filter enters the high-temperature freeze dryer, which is used to cool and dry the compressed air to the set pressure dew point before being discharged; The compressed air after cooling and drying by the temperature-type freeze dryer enters the oil removal filter, which is used to filter the compressed air for the second time, mainly for oil removal, and also removes some water and dust; the compressed air filtered by the oil removal filter enters the blast heat adsorption dryer for deep heating and drying, which is used to heat and dry the compressed air to a lower pressure dew point before being discharged; the compressed air after deep drying by the blast heat adsorption dryer enters the dust removal filter, which is used to filter the compressed air for the last step, mainly for dust removal, and also removes some water and oil.

[0016] After adopting the above structure, the utility model has the following advantages:

[0017] The energy-saving air compressor station system of the utility model is equipped with a special and efficient water removal filter before the high-temperature freeze dryer, which can remove most of the water in the compressed air. Compared with the prior art that sets multiple wet tanks for water removal, the structure is simplified, the space occupied is smaller, and the water removal efficiency is higher, thereby greatly reducing the load of the subsequent high-temperature freeze dryer, not easily causing system failure, and reducing energy consumption, which is more energy-saving and power-saving; secondly, the variable frequency air compressor is adopted, the exhaust volume can be adjusted according to the actual gas demand and the gas can be stabilized within the corresponding pressure range, so there is no need to add a dry tank to buffer or stabilize the gas, not only the structure is further simplified, but also the variable frequency air compressor is more energy-saving and power-saving; thirdly, only three filters, namely, a water removal filter, an oil removal filter and a dust removal filter, are provided, which reduces one filter compared with the prior art, thereby reducing the resistance to the compressed air and further reducing the energy consumption; in addition, a blast heat adsorption dryer is adopted, and the blower suction ring provided by the adsorption dryer is utilized After the ambient air is pressurized and heated, the adsorbent is desorbed and regenerated, without consuming the system's compressed air, which reduces the operating cost of compressed air and further reduces energy consumption. In addition, the high-temperature freeze dryer can operate at high temperatures and has a wider range of applications, so there is no need to cool the compressed gas discharged by the air compressor. The high-temperature freeze dryer has a faster drying speed and higher efficiency, which further reduces energy consumption. Therefore, by setting up a variable frequency air compressor and a water removal filter, the number of air storage tanks is reduced, thereby simplifying the structure and occupying a smaller space. By reducing the number of filters to reduce the resistance to compressed air, by using a variable frequency air compressor to adjust the exhaust volume as needed, by using a high-temperature freeze dryer to reduce cooling requirements, by using a blast heat adsorption dryer to reduce the consumption of compressed air, etc., the system energy consumption is optimized in many aspects and angles, so that the system forms a virtuous circle in energy saving, energy consumption is significantly reduced, and the energy saving and power saving effect is very significant.

[0018] Preferably, the variable frequency air compressor is a permanent magnet variable frequency two-stage screw air compressor. The permanent magnet variable frequency two-stage screw air compressor has the advantages of high efficiency, energy saving, low noise, reliability and stability.

[0019] As a preferred embodiment, a short-circuit valve is also included, which is connected between the air inlet and the air outlet of the high-temperature freeze dryer, and is used to shut down the high-temperature freeze dryer for maintenance when the short-circuit valve is closed. This setting can use the short-circuit valve to isolate the high-temperature freeze dryer from the system for maintenance; although the shutdown of the high-temperature freeze dryer will have a certain impact on the quality of the compressed air, since a dehydration filter is set before the high-temperature freeze dryer, it can also remove water well, so it will not have too much impact on the load of the subsequent device. In addition, the subsequent blast heat adsorption dryer has efficient dehydration performance, so even if the high-temperature freeze dryer is shut down, it will not have too much impact on the quality of the compressed air.

[0020] As a preferred embodiment, a waste heat recovery device is also included, whose oil inlet end is connected to the oil discharge end of the variable frequency air compressor, and is used to recover the high-temperature oil heat of the variable frequency air compressor. This arrangement can recycle the high-temperature oil heat of the variable frequency air compressor, which is more conducive to energy saving and electricity saving.

[0021] Preferably, the waste heat recovery device comprises a hot oil recovery machine, a first pump, a water tank, and a second pump. A heat exchanger is arranged in the hot oil recovery machine. The oil inlet of the hot oil recovery machine is connected to the oil discharge end of the variable frequency air compressor, the oil outlet of the hot oil recovery machine is connected to the oil inlet of the variable frequency air compressor, the water inlet of the hot oil recovery machine is connected to the water outlet of the first pump, the water inlet of the first pump is connected to the first water outlet of the water tank, the water inlet of the water tank is connected to the water outlet of the hot oil recovery machine, the second water outlet of the water tank is connected to the water inlet of the second pump, and the water outlet of the second pump is used to provide hot water to users. This arrangement recovers the high-temperature oil heat energy of the variable frequency air compressor and transports it together with the cold water output from the water tank to the heat exchanger of the hot oil recovery machine for heat exchange. The cold water in the heat exchanger is heated to hot water. After the oil circuit and the water circuit are circulated, the water in the water tank can be continuously heated, thereby providing hot water to users.

[0022] As a preferred embodiment, a host computer is also included, which is electrically connected to the variable frequency air compressor, the high temperature freeze dryer, and the blast heat adsorption dryer, respectively, to control the coordinated operation of each component. This setting can realize remote control and intelligent control, improve the comprehensive power transmission efficiency, improve the degree of automation and energy saving effect, and facilitate later maintenance, reduce dependence on personnel, and reduce labor intensity and operating costs.

[0023] Preferably, the variable frequency air compressor is provided with a first drain valve, the air tank is provided with a second drain valve, the water removal filter is provided with a third drain valve, the oil removal filter is provided with a fourth drain valve, the dust removal filter is provided with a fifth drain valve, and the first drain valve, the second drain valve, the third drain valve, the fourth drain valve, and the fifth drain valve are all zero-gas-consumption electronic drain valves and are electrically connected to the upper computer respectively. The use of zero-gas-consumption electronic drain valves is not only more energy-saving and power-saving, but also convenient for realizing intelligent control.

[0024] Preferably, the high temperature freeze dryer is a high temperature zero gas consumption and zero pressure loss freeze dryer, and the blast heat adsorption dryer is a blast heat zero gas consumption adsorption dryer. This arrangement further reduces energy consumption and is more conducive to energy saving and electricity saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of the existing air compressor station system;

[0026] Figure 2 This is a structural diagram of the energy-saving air compressor station system of the utility model;

[0027] In the prior art figure: 1a-air compressor, 2a-wet tank, 3a-oil removal filter, 4a-freeze dryer, 5a-high efficiency filter, 6a-precision filter, 7a-micro-heat regeneration dryer, 8a-dust removal filter, 9a-dry tank;

[0028] In the utility model: 1-frequency conversion air compressor, 2-air storage tank, 3-water removal filter, 4-high temperature freeze dryer, 5-oil removal filter, 6-blast heat adsorption dryer, 7-dust removal filter, 8-short-circuit valve, 9-hot oil recovery machine, 10-first pump, 11-water tank, 12-second pump, 13-heat exchanger, 14-host computer, 15-waste heat recovery device. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Example:

[0031] This embodiment provides an energy-saving air compressor station system, which includes:

[0032] A variable frequency air compressor 1, which is used to suck in ambient air and compress it, and then output pressurized compressed air to the outside;

[0033] The air storage tank 2, whose air inlet end is connected to the air outlet end of the variable frequency air compressor 1, is used to temporarily store and cool the compressed air discharged by the variable frequency air compressor 1;

[0034] A water removal filter 3, whose air inlet end is connected to the air outlet end of the air storage tank 2, is used for primary filtering of the compressed air;

[0035] A high-temperature freeze dryer 4, whose air inlet is connected to the air outlet of the water removal filter 3, is used to cool and dry the compressed air;

[0036] The oil removal filter 5, whose air inlet end is connected to the air outlet end of the high-temperature freeze dryer 4, is used for filtering the compressed air for the second time;

[0037] The air-blast heat adsorption dryer 6, whose air inlet end is connected to the air outlet end of the oil removal filter 5, is used for deep heating and drying of the compressed air;

[0038] The dust removal filter 7, whose air inlet end is connected to the air outlet end of the blast heat adsorption dryer 6, is used for the final step of filtering the compressed air.

[0039] The variable frequency air compressor 1 is a permanent magnet variable frequency two-stage screw air compressor.

[0040] It also includes a short-circuit valve 8, which is connected between the air inlet and the air outlet of the high-temperature freeze dryer 4 and is used to shut down the high-temperature freeze dryer 4 for maintenance when the short-circuit valve 8 is closed.

[0041] It also includes a waste heat recovery device 15, whose oil inlet end is connected to the oil discharge end of the variable frequency air compressor 1, and is used to recover the high-temperature oil heat of the variable frequency air compressor 1; the waste heat recovery device 15 includes a hot oil recovery machine 9, a first pump 10, a water tank 11, and a second pump 12, the hot oil recovery machine 9 is provided with a heat exchanger 13, the oil inlet end of the hot oil recovery machine 9 is connected to the oil discharge end of the variable frequency air compressor 1, the oil outlet end of the hot oil recovery machine 9 is connected to the oil inlet end of the variable frequency air compressor 1, the water inlet end of the hot oil recovery machine 9 is connected to the water outlet end of the first pump 10, the water inlet end of the first pump 10 is connected to the first water outlet end of the water tank 11, the water inlet end of the water tank 11 is connected to the water outlet end of the hot oil recovery machine 9, the second water outlet end of the water tank 11 is connected to the water inlet end of the second pump 12, and the water outlet end of the second pump 12 is used to provide hot water to users.

[0042] It also includes a host computer 14, which is electrically connected to the variable frequency air compressor 1, the high temperature freeze dryer 4, and the blast heat adsorption dryer 6, respectively, for regulating the coordinated operation of each component.

[0043] The variable frequency air compressor 1 is provided with a first drain valve, the air storage tank 2 is provided with a second drain valve, the water removal filter 3 is provided with a third drain valve, the oil removal filter 5 is provided with a fourth drain valve, and the dust removal filter 7 is provided with a fifth drain valve. The first drain valve, the second drain valve, the third drain valve, the fourth drain valve, and the fifth drain valve are all zero-gas-consumption electronic drain valves and are electrically connected to the host computer 14 respectively. The first drain valve, the second drain valve, the third drain valve, the fourth drain valve, and the fifth drain valve are not shown in the figure, and the existing technology can be used.

[0044] The high temperature freeze dryer 4 is a high temperature zero gas consumption and zero pressure loss freeze dryer, and the blast heat adsorption dryer 6 is a blast heat zero gas consumption adsorption dryer.

[0045] The working principle of this utility model energy-saving air compressor station system is as follows:

[0046] The variable frequency air compressor 1 inhales ambient air and compresses it, and then outputs the pressurized compressed air to the outside. In this embodiment, the pressure is increased to 0.3-1.6MPa; the compressed air output by the variable frequency air compressor 1 enters the air storage tank 2, and the compressed air discharged by the variable frequency air compressor 1 is temporarily stored in the air storage tank 2, and the compressed air is preliminarily cooled; the compressed air after cooling and gas-liquid separation in the air storage tank 2 enters the dewatering filter 3, and the dewatering filter 3 is used to roughly separate the compressed air, mainly for dewatering, and also to remove part of the oil and dust. In this embodiment, the dust content of the compressed air after being filtered by the dewatering filter 3 is ≤3μm; the compressed gas after being filtered by the dewatering filter 3 enters the high-temperature freeze dryer 4, and is dried by the high-temperature freeze dryer 4. The machine 4 cools and dries the compressed air to a set pressure dew point and then discharges it. In this embodiment, the pressure dew point of the compressed air treated by the high-temperature freeze dryer 4 can reach 2°C to 10°C; the compressed air cooled and dried by the high-temperature freeze dryer 4 enters the oil removal filter 5, and the oil removal filter 5 is used to filter the compressed air for the second time, mainly for oil removal, and also removes part of the water and dust. In this embodiment, the oil content of the compressed air filtered by the oil removal filter 5 is reduced to ≤0.01ppm; the compressed air filtered by the oil removal filter 5 enters the blast heat adsorption dryer 6 for deep heating and drying, and the blast heat adsorption dryer 6 is used to heat and dry the compressed air to a lower pressure dew point and then discharge it In this embodiment, the pressure dew point of the compressed air after being treated by the blast heat adsorption dryer 6 can be reduced to -40°C or below; the compressed air after deep drying by the blast heat adsorption dryer 6 enters the dust removal filter 7, and the dust removal filter 7 is used to perform the final step of filtering on the compressed air, which is mainly used for dust removal, and also removes part of the water and oil. In this embodiment, the dust content of the compressed air after being filtered by the dust removal filter 7 is ≤0.01μm; finally, the oil content of the finished compressed air after purification treatment is ≤0.01ppm, and the dust content is ≤0.01μm; the high-temperature oil discharged from the oil discharge end of the variable frequency air compressor 1 is also output to the heat exchanger 13 of the hot oil recovery machine 9, and the cold water in the water tank 11 is also output through the first pump 10 The high-temperature oil and the cold water are heat-exchanged in the heat exchanger 13, thereby heating the cold water in the heat exchanger 13 into hot water. After the oil circuit and the water circuit circulate, the water in the water tank 11 can be continuously heated, and then the hot water generated in the water tank 11 is output to the user end through the second pump 12 to realize hot water supply; the upper computer 14 controls the opening and closing of the first drain valve, the second drain valve, the third drain valve, the fourth drain valve, and the fifth drain valve, as well as the operation of the variable frequency air compressor 1, the high-temperature freeze dryer 4, and the blast heat adsorption dryer 6; when the high-temperature freeze dryer 4 needs to be shut down for maintenance, the short-circuit valve 8 is closed to isolate the high-temperature freeze dryer 4 from the system to ensure the safety of maintenance.

Claims

1. An energy-saving air compressor station system, characterized in that: It includes: A variable frequency air compressor (1) is used to suck in ambient air, compress it, and then output pressurized compressed air to the outside; An air storage tank (2), the air inlet end of which is connected to the air outlet end of the variable frequency air compressor (1), and is used to temporarily store and cool the compressed air discharged from the variable frequency air compressor (1); A water removal filter (3), the air inlet end of which is connected to the air outlet end of the air storage tank (2), and is used for performing preliminary filtering on the compressed air; A high-temperature freeze dryer (4), the air inlet of which is connected to the air outlet of the water removal filter (3), and is used to cool and dry the compressed air; An oil removal filter (5), the air inlet end of which is connected to the air outlet end of the high-temperature freeze dryer (4), and is used for performing a second filtration on the compressed air; A blast heat adsorption dryer (6), the air inlet end of which is connected to the air outlet end of the oil removal filter (5), and is used to perform deep heating and drying on the compressed air; The dust removal filter (7) has an air inlet end connected to the air outlet end of the blast heat adsorption dryer (6) and is used for the final step of filtering the compressed air.

2. The energy-saving air compressor station system according to claim 1 is characterized in that: The variable frequency air compressor (1) is a permanent magnet variable frequency two-stage screw air compressor.

3. The energy-saving air compressor station system according to claim 1 is characterized in that: It also includes a short-circuit valve (8) which is connected between the air inlet and air outlet of the high-temperature freeze dryer (4) and is used to shut down the high-temperature freeze dryer (4) for maintenance when the short-circuit valve (8) is closed.

4. The energy-saving air compressor station system according to claim 1 is characterized in that: It also includes a waste heat recovery device (15), the oil inlet end of which is connected to the oil discharge end of the variable frequency air compressor (1) and is used to recover the heat of the high-temperature oil of the variable frequency air compressor (1).

5. The energy-saving air compressor station system according to claim 4 is characterized in that: The waste heat recovery device (15) comprises a hot oil recovery machine (9), a first pump (10), a water tank (11), and a second pump (12). The hot oil recovery machine (9) is provided with a heat exchanger (13). The oil inlet end of the hot oil recovery machine (9) is connected to the oil discharge end of the variable frequency air compressor (1), the oil outlet end of the hot oil recovery machine (9) is connected to the oil inlet end of the variable frequency air compressor (1), the water inlet end of the hot oil recovery machine (9) is connected to the water outlet end of the first pump (10), the water inlet end of the first pump (10) is connected to the first water outlet end of the water tank (11), the water inlet end of the water tank (11) is connected to the water outlet end of the hot oil recovery machine (9), the second water outlet end of the water tank (11) is connected to the water inlet end of the second pump (12), and the water outlet end of the second pump (12) is used to provide hot water to users.

6. The energy-saving air compressor station system according to claim 1 is characterized in that: It also includes a host computer (14), which is electrically connected to the variable frequency air compressor (1), the high temperature freeze dryer (4), and the blast heat adsorption dryer (6) respectively, and is used to control the coordinated operation of the various components.

7. An energy-saving air compressor station system according to claim 6, characterized in that: The variable frequency air compressor (1) is provided with a first drain valve, the air storage tank (2) is provided with a second drain valve, the water removal filter (3) is provided with a third drain valve, the oil removal filter (5) is provided with a fourth drain valve, and the dust removal filter (7) is provided with a fifth drain valve. The first drain valve, the second drain valve, the third drain valve, the fourth drain valve, and the fifth drain valve are all zero-gas-consumption electronic drain valves and are electrically connected to a host computer (14) respectively.

8. The energy-saving air compressor station system according to claim 1 is characterized in that: The high-temperature freeze dryer (4) is a high-temperature zero-gas-consumption and zero-pressure-loss freeze dryer, and the blast heat adsorption dryer (6) is a blast heat zero-gas-consumption adsorption dryer.

Images