Energy-saving device for reducing air inlet temperature of air compression system

Abstract

The invention provides an energy-saving device for reducing air inlet temperature of an air compression system, which sequentially comprises a static pressure box, a fan coil and an air compressor along the airflow direction, the static pressure box receives external environment air through an air inlet, and an air outlet of the static pressure box is connected with an air inlet of the fan coil through a static pressure box air outlet pipe; an air outlet of the fan coil is externally connected with a coil air outlet pipe, the coil air outlet pipe is provided with a plurality of air supply branch pipes which are distributed in parallel, and the coil air outlet pipe is connected to air inlets of the air compressors through the air supply branch pipes in a one-to-one correspondence mode; chilled water generated by a water chilling unit of a workshop serves as a cold source of the fan coil, an inlet of the coil is connected with a chilled water inlet pipeline to receive the chilled water from the water chilling unit, and an outlet of the coil is connected with a chilled water return pipeline to return the chilled water subjected to heat exchange to the water chilling unit. According to the invention, the operation energy consumption of the air compression system can be reduced while the operation efficiency of the air compression system is improved.

Description

Technical Field

[0001] The invention relates to an energy-saving device for reducing the intake air temperature of an air compression system. Background Art

[0002] The compressor motor of the air compressor equipment has high power and emits a lot of heat, which leads to high temperature in the air compressor station environment during the transition season and summer. In extreme cases, the ambient temperature can even reach above 45°C. In addition, due to changes in ambient temperature in different seasons, the air compressor gas output fluctuates, especially in high temperature environments, the gas output shows a downward trend, which has an adverse impact on the air compression guarantee capability and has a direct impact on the stable operation of the electronic control equipment and electrical equipment in the station. Therefore, it is of practical significance to study the correlation between ambient temperature (exhaust side temperature) and air compressor energy efficiency, and then improve related equipment and facilities to ensure the stable operation of air compressor flow and increase gas output. Summary of the invention

[0003] In order to solve the above technical problems, the present invention proposes an energy-saving device for reducing the intake temperature of an air compression system, so as to improve the operating efficiency of the air compression system and reduce the operating energy consumption of the air compression system.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] An energy-saving device for reducing the air intake temperature of an air compression system has the following structural features:

[0006] The airflow direction includes a static pressure box, a fan coil unit, and an air compressor. The static pressure box receives external ambient air through an air inlet. The air outlet of the static pressure box is connected to the air inlet of the fan coil unit through an air outlet duct of the static pressure box. The air outlet of the fan coil unit is externally connected to the coil air outlet duct. The coil air outlet duct is formed with multiple air supply branches distributed in parallel, which are respectively connected to the air inlets of each air compressor through each air supply branch.

[0007] The fan coil uses the chilled water produced by the workshop's chiller as a cold source. The coil's inlet is connected to a chilled water inlet pipeline to receive chilled water from the chiller, and the coil's outlet is connected to a chilled water return pipeline to return the chilled water after heat exchange to the chiller.

[0008] The structural characteristics of the present invention also lie in:

[0009] The fan coil units are provided with two groups, which are arranged in parallel. Each group of fan coil units is respectively equipped with a static pressure box air outlet duct. The air inlet ends of the two static pressure box air outlet ducts are merged and connected to the air outlet of the static pressure box.

[0010] The fan coil unit has a fan air volume of 4000m 3 / h.

[0011] The fan of the fan coil unit is an axial flow fan.

[0012] A temperature sensor is arranged on the coil air outlet duct.

[0013] The chiller outputs chilled water to a matching water distributor, and a branch is drawn out from one of the outlet pipes of the water distributor to serve as the chilled water inlet pipe.

[0014] An electric valve is arranged on the chilled water inlet pipeline.

[0015] The electric valve is a proportional control valve.

[0016] The chiller collects the chilled water after heat exchange through a matching water collector, and the chilled water return pipeline is merged into one of the water inlet pipes of the water collector.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] The present invention helps to reduce the along-the-line resistance and local resistance of the main pipeline of the energy-saving device by configuring a static pressure box, and utilizes the chilled water generated by the workshop chiller as the cooling medium of the fan coil in the device, thereby improving the stability of the device while taking into account the functions of energy saving and consumption reduction. By reducing the air intake temperature of the air compression system, the present invention can improve the efficiency of the air compression system at a relatively low investment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the flow of chilled water used in fan coil units.

[0021] In the figure, 1 is a static pressure box; 2 is an air outlet duct of the static pressure box; 3 is a fan coil unit; 4 is an air outlet duct of the coil unit; 5 is an air supply branch pipe; 6 is an air compressor; 7 is a chiller; 8 is a water distributor; 9 is a chilled water inlet pipeline; 10 is a chilled water return pipeline; 11 is a water collector; and 12 is an electric valve. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Please refer to Figure 1 to Figure 2The energy-saving device for reducing the air intake temperature of the air compression system of this embodiment includes a static pressure box 1, a fan coil unit 3, and an air compressor 6 in sequence along the air flow direction. The static pressure box 1 receives external ambient air through an air inlet. The air outlet of the static pressure box 1 is connected to the air inlet of the fan coil unit 3 through a static pressure box air outlet duct 2. The air outlet of the fan coil unit 3 is externally connected to the coil air outlet duct 4. The coil air outlet duct 4 is formed with multiple air supply branches 5 distributed in parallel, which are respectively connected to the air inlets of each air compressor 6 through each air supply branch 5 in a one-to-one correspondence;

[0024] The fan coil 3 uses the chilled water produced by the workshop's chiller 7 as a cold source. The inlet of the coil is connected to the chilled water inlet pipeline 9 to receive the chilled water from the chiller 7, and the outlet of the coil is connected to the chilled water return pipeline 10 to return the chilled water after heat exchange to the chiller 7.

[0025] In specific implementation, the corresponding structural setting of the energy-saving device also includes:

[0026] There are two groups of fan coil units 3, which are arranged in parallel. Each group of fan coil units 3 is respectively equipped with a static pressure box air outlet duct 2, and the air inlet ends of the two static pressure box air outlet ducts 2 are merged and connected to the air outlet of the static pressure box 1.

[0027] The fan air volume of fan coil unit 3 is 4000m 3 / h, for axial flow fans.

[0028] The coil air outlet duct 4 is provided with a temperature sensor.

[0029] The chiller 7 outputs chilled water to a matching water distributor 8 , and a branch is led out from one of the outlet pipes of the water distributor 8 to serve as a chilled water inlet pipe 9 .

[0030] An electric valve 12 is provided on the chilled water inlet pipe.

[0031] The electric valve 12 is a proportional control valve.

[0032] The chiller 7 collects the chilled water after heat exchange through the matching water collector 11 , and the chilled water return pipeline 10 is merged into one of the water inlet pipes of the water collector 11 .

[0033] The diameters of the chilled water inlet pipeline 9 and the chilled water return pipeline 10 are both DN50.

[0034] The temperature of the chilled water flowing into the coil through the chilled water inlet pipeline 9 is maintained at 11°C-15°C, the external ambient air is fully heat exchanged with the chilled water through the fan coil 3, and the cooled fresh air is delivered to the air inlet of each air compressor 6.

[0035] Under the condition that there is no air conditioning environment for the air compression system, the energy-saving device of this embodiment can reduce the air intake temperature of the air compression system, thereby improving the efficiency of the air compression system and reducing the investment cost. The principle is:

[0036] A branch is led out from one of the water outlet pipes of the water distributor 8 of the workshop chiller 7 as a chilled water inlet pipe 9, which introduces the chilled water from the chiller 7 into the coil of the fan coil 3, and performs heat exchange with the external ambient air sent into the fan coil 3 through the static pressure box 1 as a cooling medium, so as to obtain cooled fresh air, which is sent into the air inlet of the air compressor 6 as the intake air.

[0037] Based on this embodiment, those skilled in the art can further expand the functions, for example, to enable the energy-saving device to operate automatically. Taking the configuration of two sets of fan coil units 3 as an example, each electric valve 12 and motor in the device is connected to the PLC, and the operation process can refer to:

[0038] The temperature T of the fresh air in the coil outlet duct 4 to be sent to the air compressor 6 is detected by the temperature sensor;

[0039] If the temperature T is less than 28°C, the fans of the two sets of fan coil units 3 remain stopped, and the electric valve 12 of the matching chilled water inlet pipeline 9 remains closed;

[0040] If the temperature is 30℃>T≥28℃, one group of fan coil units 3 is turned on, the other group of fan coil units 3 is turned off, and the electric valve 12 of the matching chilled water inlet pipeline 9 is opened, and the external ambient air sent into the fan coil units 3 is cooled by one group of fan coil units 3, and then sent to the air inlet of the air compressor 6 after cooling;

[0041] If the temperature T≥30℃, the two sets of fan coil units 3 are turned on, and the electric valve 12 of the matching chilled water inlet pipeline 9 is opened. The two sets of fan coil units 3 are used to cool the external ambient air sent into the fan coil units 3, and the air is sent to the air inlet of the air compressor 6 after cooling.

[0042] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An energy-saving device for reducing the intake temperature of an air compression system, characterized in that: The airflow direction includes a static pressure box, a fan coil unit, and an air compressor. The static pressure box receives external ambient air through an air inlet. The air outlet of the static pressure box is connected to the air inlet of the fan coil unit through an air outlet duct of the static pressure box. The air outlet of the fan coil unit is externally connected to the coil air outlet duct. The coil air outlet duct is formed with multiple air supply branches distributed in parallel, which are respectively connected to the air inlets of each air compressor through each air supply branch. The fan coil uses the chilled water produced by the workshop's chiller as a cold source. The coil's inlet is connected to a chilled water inlet pipeline to receive chilled water from the chiller, and the coil's outlet is connected to a chilled water return pipeline to return the chilled water after heat exchange to the chiller.

2. The energy-saving device for reducing the intake temperature of an air compressor system according to claim 1 is characterized in that: The fan coil units are provided with two groups, which are arranged in parallel. Each group of fan coil units is respectively equipped with a static pressure box air outlet duct. The air inlet ends of the two static pressure box air outlet ducts are merged and connected to the air outlet of the static pressure box.

3. The energy-saving device for reducing the intake air temperature of an air compression system according to claim 1 or 2, characterized in that: The fan coil unit has a fan air volume of 4000m 3 / h.

4. The energy-saving device for reducing the intake temperature of an air compression system according to claim 3 is characterized in that: The fan of the fan coil unit is an axial flow fan.

5. The energy-saving device for reducing the intake temperature of an air compression system according to claim 1 is characterized in that: A temperature sensor is arranged on the coil air outlet duct.

6. The energy-saving device for reducing the intake temperature of an air compressor system according to claim 1 is characterized in that: The chiller outputs chilled water to a matching water distributor, and a branch is drawn out from one of the outlet pipes of the water distributor to serve as the chilled water inlet pipe.

7. The energy-saving device for reducing the intake temperature of an air compression system according to claim 1 or 6, characterized in that: An electric valve is arranged on the chilled water inlet pipeline.

8. The energy-saving device for reducing the intake temperature of an air compression system according to claim 7 is characterized in that: The electric valve is a proportional regulating valve.

9. The energy-saving device for reducing the intake temperature of an air compressor system according to claim 1 is characterized in that: The chiller collects the chilled water after heat exchange through a matching water collector, and the chilled water return pipeline is merged into one of the water inlet pipes of the water collector.

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