Automatic residue discharging device of tug air compressor
By designing the automatic disposal device of the tug air compressor and using the control circuit to open the venting solenoid valve in advance for disposal, the problem of oil, gas and condensate water entering the air bottle during the operation of the ship air compressor is solved, and the equipment operation stability and ship operation reliability are achieved.
Patent Information
- Application Number
- CN202422360150.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-27
AI Technical Summary
When the ship air compressor is running, oil, gas and condensate water are prone to enter the air bottle, resulting in incomplete disposal, easy to block the pipeline, shorten the equipment life and pose safety hazards, affecting the reliability of the ship's operation.
Design a tugboat air compressor automatic disposal device, including an air compressor, air bottle, gas-liquid separator, dryer, venting solenoid valve and control circuit. The venting solenoid valve is opened in advance through the control circuit to release the disposal to prevent oil, gas and condensate from entering the air bottle.
It realizes that air compressors are released in advance when starting, avoiding oil, gas and condensate water entering the air bottle, reducing equipment damage, ensuring stable equipment operation, avoiding safety hazards, and ensuring the reliability of ship operation.
Smart Images
Figure CN222991688U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ship equipment, in particular to an automatic drain device for a tugboat air compressor. Background Technique
[0002] Tugboats undertake important tasks such as assisting ships in berthing and unberthing, emergency rescue, and fire protection in Weifang Port Area. The ship's compressed air system is an important part of the ship's auxiliary system. In modern ships, due to the increasing power of the main engine and generator, the starting power mainly relies on compressed air. At the same time, it is also widely used in other ship systems. The compressed air generated by the ship's air compressor (air compressor) is mainly used for the starting and remote control system of the ship's main engine, ship miscellaneous air, ship whistles, etc. The ship's compressed air system includes an air compressor, a pressure switch, and an air bottle. The air compressor is a device used to generate and supply compressed air. The pressure switch is a solenoid valve that can turn the air compressor on and off according to pressure. The air bottle is a device used to store the compressed air generated by the air compressor and supply compressed air to the system pipeline. The air compressor and the air bottle are connected through valves and pipelines. When the air compressor operates, the compressed air directly enters the air bottle through the pipeline. Oil and gas, and condensate are likely to enter the air bottle. Incomplete draining of the air bottle can easily lead to failures of gas-using equipment, corrode pipelines and pneumatic equipment, shorten their service life, and easily pose potential safety hazards, thus unable to ensure the reliability of ship operation. Content of the Utility Model
[0003] The purpose of the utility model is to provide an automatic drain device for a tugboat air compressor to overcome the problems existing in existing equipment.
[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] An automatic drain device for a tugboat air compressor, characterized in that: it includes an air compressor, an air bottle, a gas-liquid separator, a dryer, a vent solenoid valve, and a control circuit. The air compressor drives the compressor to work with an electric motor. The air compressor is provided with an air outlet end, and the air bottle is provided with an air inlet end. The gas-liquid separator, the dryer, and the vent solenoid valve are connected by pipelines between the air outlet end of the air compressor and the air inlet end of the air bottle;
[0006] The control circuit is electrically connected to the motor of the air compressor and the vent solenoid valve, and includes a three-phase main power supply, a transformer, an air compressor start switch, a pressure switch, a contactor, a time relay one, and a time relay two that are electrically connected through wires. The motor of the air compressor is electrically connected to the three-phase main power supply. The pressure switch includes a lower limit switch and an upper limit switch. The air compressor start switch includes an automatic start switch and a manual start switch. The automatic start switch, the lower limit switch, and the upper limit switch are connected in series to form a first series branch. The normally open auxiliary contact of the contactor is connected in parallel across the two ends of the lower limit switch. This first series branch is connected in parallel with the manual start switch to form a first parallel branch. The first parallel branch is then connected in series with the contactor coil to form an air compressor start circuit module;
[0007] The normally closed contacts of time relay one and time relay two are connected in series to form a second series branch. Time relay two and the normally open contact of time relay one are connected in series to form a third series branch. The second series branch and the third series branch are connected in parallel to form a second parallel branch. The second parallel branch is then connected in series with the normally open auxiliary contact of the contactor to form a blowdown start circuit module. The air compressor start circuit module and the blowdown start circuit module are connected in parallel. The vent solenoid valve is connected in parallel across the two ends of time relay two.
[0008] Based on the above technical solutions, the present utility model can also be improved as follows:
[0009] As a further improvement of the above technical solution, both the lower limit switch and the upper limit switch are normally closed switches, and an air relay is used as the pressure switch.
[0010] As a further improvement of the above technical solution, the delay time setting value of time relay one is 5s, and the delay time setting value of time relay two is 10s.
[0011] As a further improvement of the above technical solution, the air compressor start circuit module is connected in series with a thermal relay, and the thermal relay is used for overload protection.
[0012] As a further improvement of the above technical solution, the air compressor start circuit module is connected in parallel with a power indicator light, and the first parallel branch is connected in series with an operation indicator light.
[0013] The beneficial effects of the present utility model are as follows: The automatic blowdown device for the towing wheel air compressor provided by the present utility model realizes the early opening of the vent solenoid valve for blowdown when the air compressor starts, avoiding a large amount of oil, gas, and condensed water from entering the air bottle during the operation of the air compressor and mixing with oil, dust, etc., which is likely to block the pipeline, reducing the damage of the gas-using equipment, making the equipment operate stably, avoiding potential safety hazards, and ensuring the reliability of ship operation. Description of the Drawings
[0014] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0015] Figure 1 It is a schematic structural diagram of an automatic residue discharging device for a tugboat air compressor provided by a preferred embodiment of the present utility model;
[0016] Figure 2 is Figure 1 the schematic diagram of the control circuit in
[0017] In the figure: 1. Air compressor; 2. Air bottle; 3. Gas-liquid separator; 4. Dryer; 5. Vent solenoid valve; 6. Control circuit; 61. Air compressor starting circuit module; 62. Residue discharging starting circuit module. Specific embodiments
[0018] Now, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic way, so they only show the components related to the present utility model.
[0019] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.
[0020] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.
[0021] Such as Figure 1 、 Figure 2As shown in the figure, an automatic residual air discharging device for a towing wheel air compressor provided by a preferred embodiment of the present utility model comprises an air compressor 1, an air bottle 2, a gas-liquid separator 3, a dryer 4, a vent solenoid valve 5 and a control circuit 6.
[0022] The air compressor 1 drives the compressor to work with an electric motor M. The air compressor 1 is provided with an air outlet end, and the air bottle 2 is provided with an air inlet end. The gas-liquid separator 3, the dryer 4 and the vent solenoid valve 5 are connected between the air outlet end of the air compressor 1 and the air inlet end of the air bottle 2 through pipelines. The gas-liquid separator 3 is used for separating the liquid in the gas, the dryer 4 is used for drying the gas, and the vent solenoid valve 5 is used for discharging residual air and sewage. When the air compressor 1 starts, the vent solenoid valve 5 is opened in advance for discharging residual air. Firstly, it is for starting under no-load. The air compressor 1 is a high-power device, and the starting power current is relatively large, which will impact the power grid. Secondly, it is for timely discharging the oil and condensate water in the gas-liquid separator 3 to avoid a large amount of oil and water entering the air bottle 2.
[0023] The control circuit 6 is electrically connected to the electric motor M of the air compressor 1 and the vent solenoid valve 5, and comprises a three-phase main power supply (L1, L2, L3), a transformer TC, an air compressor starting switch, a pressure switch, a contactor KM1, a time relay one KT1 and a time relay two KT2 which are electrically connected through wires.
[0024] The electric motor M of the air compressor 1 is electrically connected to the three-phase main power supply, and the three-phase main power supply supplies power to the electric motor M of the air compressor 1. The three-phase main power supply is electrically connected to one side of the power input of the transformer TC, and the air compressor starting switch, the pressure switch, the contactor KM1, the time relay one KT1 and the time relay two KT2 are electrically connected to the other side of the power output of the transformer TC.
[0025] The pressure switch includes a lower limit switch PS1 and an upper limit switch PS2. Both the lower limit switch PS1 and the upper limit switch PS2 are normally closed switches. When the pressure is high, the upper limit switch PS2 operates; when the pressure is low, the lower limit switch PS1 operates. In this embodiment, an air relay is used as the pressure switch. The air compressor start switch includes an automatic start switch SA1 and a manual start switch SA2. The automatic start switch SA1 is used to make the air compressor 1 work in the automatic mode, and the manual start switch SA2 is used to switch the air compressor 1 to work in the manual mode. When the manual start switch SA2 is closed, the motor M can be started; when the manual start switch SA2 is opened, the motor M stops rotating and the air compressor 1 stops working. The automatic start switch SA1, the lower limit switch PS1, and the upper limit switch PS2 are connected in series to form a first series branch. The normally open auxiliary contact of the contactor KM1 is connected in parallel across the two ends of the lower limit switch PS1. This first series branch is connected in parallel with the manual start switch SA2 to form a first parallel branch, and the first parallel branch is then connected in series with the contactor KM1 coil to form an air compressor start circuit module 61. Preferably, the thermal relay FR is connected in series with the air compressor start circuit module 61, and the thermal relay FR is used for overload protection.
[0026] The normally closed contacts of the time relay one KT1 and the time relay two KT2 are connected in series to form a second series branch, and the time relay two KT2 and the normally open contact of the time relay one KT1 are connected in series to form a third series branch. The second series branch and the third series branch are connected in parallel to form a second parallel branch, and the second parallel branch is then connected in series with the normally open auxiliary contact of the contactor KM1 to form a blowdown start circuit module 62. The air compressor start circuit module 61 and the blowdown start circuit module 62 are connected in parallel. The blowdown solenoid valve 5 is connected in parallel across the two ends of the time relay two KT2. The delay time setting value of the time relay one KT1 is 5 s, and the delay time setting value of the time relay two KT2 is 10 s.
[0027] Preferably, the air compressor start circuit module 61 is connected in parallel with the power indicator HL1, and the power indicator HL1 indicates whether the control circuit 6 is powered; the first parallel branch is connected in series with the running indicator HL2, and the running indicator HL2 indicates the working state of the motor M of the air compressor 1.
[0028] The working principle of the above-mentioned automatic blowdown device for tugboat air compressors: In the automatic mode of the air compressor 1, when the pressure of the compressed air decreases to the lower limit set pressure value, the pressure switch closes, the coil of the contactor KM1 is energized and conducts, and at the same time, the normally open auxiliary contact of the contactor KM1 closes, and the pressure switch is self-locked at low pressure. The air compressor 1 starts, and at the same time, the coil of the time relay KT1 is energized and conducts. The normally open contact of the time relay KT1 is energized and conducts with a time delay to close, so that the coil of the time relay KT2 is energized and conducts, and then the vent solenoid valve 5 operates to unload and blow down. Then, the normally closed contact of the time relay KT2 is delayed to open, so that the coil of the time relay KT1 loses power, the normally open contact of the time relay KT1 loses power and opens, and the vent solenoid valve 5 closes. When the pressure of the compressed air rises to the upper limit set pressure value, the upper limit switch PS2 of the pressure switch disconnects, the coil of the contactor KM1 loses power, the normally open auxiliary contact of the contactor KM1 disconnects, and the air compressor 1 automatically stops working. It can also be switched to the manual mode. When the manual start switch SA2 is closed, the motor M can start; when the manual start switch SA2 is disconnected, the motor M stops rotating and the air compressor 1 stops working, realizing the manual start of the air compressor 1 and manual blowdown.
[0029] In the specific implementation manners of the above-mentioned utility model, the descriptions not involved belong to the well-known technologies in the art, and can be implemented with reference to the well-known technologies.
[0030] Based on the ideal embodiments of the present utility model as the inspiration, through the above description, relevant personnel can completely make various changes and modifications within the scope not deviating from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.
Claims
1. An automatic residual discharge device for a tugboat air compressor, characterized in that: It includes an air compressor, an air bottle, a gas-liquid separator, a dryer, a venting solenoid valve and a control circuit. The air compressor is driven by an electric motor to work. The air compressor is provided with an air outlet, and the air bottle is provided with an air inlet. The gas-liquid separator, the dryer and the venting solenoid valve are connected between the air outlet of the air compressor and the air inlet of the air bottle through a pipeline. The control circuit is electrically connected to the motor and the venting solenoid valve of the air compressor, including a three-phase main power supply, a transformer, an air compressor start switch, a pressure switch, a contactor, a time relay 1 and a time relay 2 electrically connected through wires, the motor of the air compressor is electrically connected to the three-phase main power supply, the pressure switch includes a lower limit switch and an upper limit switch, the air compressor start switch includes an automatic start switch and a manual start switch, the automatic start switch, the lower limit switch and the upper limit switch are connected in series to form a first series branch, the normally open auxiliary contacts of the contactor are connected in parallel to both ends of the lower limit switch, the first series branch is connected in parallel with the manual start switch to form a first parallel branch, and the first parallel branch is further connected in series with the contactor coil to form an air compressor start circuit module; The normally closed contacts of time relay one and time relay two are connected in series to form a second series branch, the normally open contacts of time relay two and time relay one are connected in series to form a third series branch, the second series branch and the third series branch are connected in parallel to form a second parallel branch, the second parallel branch is then connected in series with the normally open auxiliary contacts of the contactor to form a residual discharge starting circuit module, the air compressor starting circuit module is connected in parallel to the residual discharge starting circuit module, and the discharge solenoid valve is connected in parallel to both ends of time relay two.
2. The automatic residual discharge device for tugboat air compressor according to claim 1 is characterized by: The lower limit switch and the upper limit switch are both normally closed switches, and an air relay is used as a pressure switch.
3. The automatic residual discharge device for tugboat air compressor according to claim 1 is characterized in that: The delay time setting value of the time relay 1 is 5s, and the delay time setting value of the time relay 2 is 10s.
4. The automatic residual discharge device for tugboat air compressor according to claim 1 is characterized in that: The air compressor starting circuit module is connected in series with the thermal relay, and the thermal relay is used for overload protection.
5. The automatic residual discharge device for tugboat air compressor according to claim 1 is characterized by: The air compressor starting circuit module is connected in parallel with the power indicator light, and the first parallel branch is connected in series with the operation indicator light.