CN209976792U - Auxiliary system for preventing liquid impact of single screw compressor - Google Patents
Auxiliary system for preventing liquid impact of single screw compressor Download PDFInfo
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- CN209976792U CN209976792U CN201920749478.2U CN201920749478U CN209976792U CN 209976792 U CN209976792 U CN 209976792U CN 201920749478 U CN201920749478 U CN 201920749478U CN 209976792 U CN209976792 U CN 209976792U
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Abstract
The utility model relates to a single screw compressor prevents liquid and hits auxiliary system, be equipped with air inlet, hydrojet mouth and gas vent on single screw compressor's the aircraft nose, the gas outlet passes through the pipeline and is connected with vapour and liquid separator to set up No. three check valves on the pipeline, vapour and liquid separator's top sets up the gas outlet that is used for exporting compressed gas, vapour and liquid separator's bottom and hydrojet mouth intercommunication, its characterized in that, the bottom of aircraft nose is equipped with the leakage fluid dram, the leakage fluid dram sets up the gear pump, the export of gear pump is connected with vapour and liquid separator's bottom. Compared with the prior art, the single-screw compressor of the utility model extracts the cooling liquid in the compressor head after the shutdown, thereby avoiding the liquid impact caused by the startup, and collecting the cooling liquid medium without waste; and the gear pump can pre-lubricate the single screw compressor head when starting, so that the service life of the head is prolonged.
Description
Technical Field
The utility model relates to a single screw compressor technical field, concretely relates to single screw compressor prevents liquid and hits auxiliary system.
Background
The single-screw compressor is composed of a cylindrical screw and two plane star wheels which are arranged in central symmetry to form a meshing pair, and the meshing pair is positioned in a machine head. The working principle of the single-screw compressor is as follows: gas enters a screw compressor head through a gas inlet of the compressor, and enters a gas-liquid separator through a check valve of an outlet pipeline of the compressor after the gas in the head is mixed and pressurized with liquid sprayed from a liquid spraying inlet of the compressor; after being filtered by cyclone separation in the separator, the gas is discharged through an exhaust port above the separator, and the liquid is settled and accumulated at the bottom of the gas-liquid separator and reaches a liquid spraying port of the compressor through a liquid spraying pipeline under the action of pressure difference for recycling. In the gas compression process, can produce the heat, in order not to make the heat stack cause the harm to equipment, lead to equipment can not normally work, need cool off compressed gas in compression process, let the coolant liquid take away compression heat promptly.
The gas and the liquid are mixed and compressed in the compression cavity, so that the purpose of gas pressurization and conveying is achieved, and the cooling liquid has the functions of cooling, sealing, lubricating, noise reduction and the like; when the spray liquid compression stops working, gas left in the head of the screw compressor can be automatically discharged, but cooling liquid left in the head of the screw compressor is left, if the gas is left in the head of the screw compressor, liquid impact of a meshing pair can be caused in a compression cavity due to the fact that the liquid cannot be compressed when the compressor is started, and the compressor is damaged; the following problems may result if the in-situ emission is performed: 1. the on-site discharge can pollute the environment, and special discharge pipelines or collection devices are needed; 2. can result in loss of the liquid spray medium of the screw compressor, requires a liquid replenishing pipeline and device, and causes increased system complexity and inconvenience in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a single screw compressor prevents liquid hammer auxiliary system in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme: the utility model provides a single screw compressor prevents liquid and hits auxiliary system, be equipped with air inlet, hydrojet mouth and gas vent on single screw compressor's the aircraft nose, the gas vent passes through the pipeline and is connected with vapour and liquid separator to set up No. three check valves on the pipeline, vapour and liquid separator's top sets up the gas outlet that is used for exporting compressed gas, vapour and liquid separator's bottom and hydrojet mouth intercommunication, the bottom of aircraft nose is equipped with the leakage fluid dram, the leakage fluid dram sets up the gear pump, the export of gear pump is connected with vapour and liquid separator's bottom. When the single-screw compressor normally operates, the liquid discharge port and the electromagnetic valve are closed, the gear pump is closed, gas enters from the gas inlet, cooling liquid enters from the liquid spraying port, gas compression is carried out inside the machine head, then the compressed gas and the cooling liquid are discharged from the gas outlet and enter the gas-liquid separator, the cooling liquid is left at the bottom of the gas-liquid separator and sprayed into the liquid spraying port under the action of pressure difference for cyclic utilization, and the compressed gas enters subsequent equipment from the gas outlet at the top of the gas-liquid separator. After the single-screw compressor stops working, the air inlet and the liquid spraying port respectively stop air inlet and cooling liquid inlet, gas in the machine head is discharged and dissipated to the atmosphere through the automatic discharge valve, then the liquid discharge port and the gear pump are opened, and residual cooling liquid in the machine head is directly discharged into the gas-liquid separator, so that liquid impact caused by starting is avoided, and waste is avoided by collecting liquid spraying media.
Preferably, the liquid outlet is provided with a liquid level switch, and the liquid level switch is connected with the gear pump and is used for controlling the opening and closing of the gear pump.
Preferably, a first check valve is arranged between the gear pump and the liquid outlet.
Preferably, a bypass pipe is arranged between the gear pump and the first check valve, and the other end of the bypass pipe is connected with an air inlet. Although the single-screw compressor is started to generate large liquid impact and damage the single-screw compressor when the machine head is filled with cooling liquid, if the machine head is started and the machine head is in a completely dry state, the screw and the star wheel of the single-screw compressor are in a dry grinding state, the abrasion is large, and the machine head is easy to damage. Therefore the utility model discloses a gear pump reversal sends the coolant liquid into the air inlet for get into the aircraft nose after coolant liquid and gas mix in, in the period of just starting at the aircraft nose (general 5 ~ 10s), the aircraft nose to single screw compressor lubricates in advance promptly, improves aircraft nose life. Therefore, the utility model discloses a gear pump can not only prevent the production of liquid impact, can also lubricate in advance the start-up of aircraft nose, from the multi-angle protection aircraft nose, prolongs the life of aircraft nose.
Preferably, the bypass pipe is provided with a second check valve.
Preferably, a pipeline sight glass and an electromagnetic valve are arranged on a connecting pipeline of the gear pump and the gas-liquid separator, and the flow direction of liquid can be observed through the pipeline sight glass.
The auxiliary system is provided with a controller, and the controller is connected with the electromagnetic valve and used for controlling the opening and closing of the electromagnetic valve. When the single-screw compressor passes a starting stage (generally 5-10 s), pressure difference is built between the separator and the liquid spraying port, the liquid spraying port sprays cooling liquid into the machine head normally, the electromagnetic valve is closed, and pre-lubrication is finished.
The controller is connected with the liquid level switch, just the controller is connected with the gear pump and is used for controlling the switching of gear pump.
Preferably, the controller is a PLC controller.
Compared with the prior art, the beneficial effects of the utility model are embodied in following several aspects:
(1) after the single-screw compressor is shut down, the cooling liquid in the compressor head is pumped away, so that liquid impact caused by starting is avoided, and meanwhile, the cooling liquid medium is collected without waste;
(2) the single-screw compressor head can be pre-lubricated by the gear pump when the single-screw compressor is started, and the service life of the head is prolonged.
Drawings
Fig. 1 is a schematic connection diagram of the present invention.
Wherein, 1 is the air inlet, 2 is the aircraft nose, 3 is vapour and liquid separator, 4 is the gas vent, 41 is check valve No. one, 42 is check valve No. two, 43 is check valve No. three, 5 is the gear pump, 6 is the solenoid valve, 7 is the pipeline sight glass, 8 is the liquid level switch, 9 is the hydrojet, 10 is the gas outlet, 11 is the leakage fluid dram.
Detailed Description
The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The utility model provides a single screw compressor prevents liquid and hits auxiliary system, its structure is shown in figure 1, be equipped with air inlet 1 on single screw compressor's the aircraft nose 2, hydrojet 9 and gas vent 4, gas vent 4 is connected with vapour and liquid separator 3 through the pipeline, and set up No. three check valves 43 on the pipeline, vapour and liquid separator 3's top sets up the gas outlet 10 that is used for exporting compressed gas, vapour and liquid separator 3's bottom and hydrojet 9 intercommunication, aircraft nose 2's bottom is equipped with leakage fluid dram 11, leakage fluid dram 11 sets up gear pump 5, gear pump 5's export is connected with vapour and liquid separator 3's bottom. The liquid outlet 11 is provided with a liquid level switch 8, and the liquid level switch 8 is connected with the gear pump 5 and is used for controlling the opening and closing of the gear pump 5.
A first check valve 41 is arranged between the gear pump 5 and the liquid discharge port 11. A bypass pipe is arranged between the gear pump 5 and the first check valve 41, and the other end of the bypass pipe is connected with the air inlet 1. A second check valve 42 is provided on the bypass tube.
A pipeline sight glass 7 and an electromagnetic valve 6 are arranged on a connecting pipeline of the gear pump 5 and the gas-liquid separator 3, and the flow direction of liquid can be observed through the pipeline sight glass 7.
The auxiliary system is also provided with a PLC controller, and the PLC controller is connected with the electromagnetic valve 6 and is used for controlling the electromagnetic valve 6.
When the single-screw compressor is stopped and liquid in the machine head 2 of the single-screw compressor is left too much, the liquid level switch pressure 8 is detected and acts, the PLC controls the opening of the electromagnetic valve 6 and starts the gear pump 5 to rotate forwards, cooling liquid in the machine head 2 is pumped into the bottom of the gas-liquid separator 3 through the check valve 41 for collection and storage, the liquid flow direction can be observed through the pipeline sight glass 7, when the liquid level drops, the liquid level switch 8 detects and acts, the PLC controls the electromagnetic valve 6 to close, the gear pump 5 stops working, and the system finishes working;
when the single-screw compressor 2 is started, the meshing pair needs to be lubricated by spraying liquid immediately after rotating, at the moment, the PLC can control the electromagnetic valve 6 to be opened, the gear pump 5 is started to reversely rotate, cooling liquid in the gas-liquid separator 3 is pumped into the air inlet 1 of the single-screw compressor through the second check valve 42, the interior of the handpiece 2 is pre-lubricated, the flow direction of the liquid can be observed through the pipeline view mirror 7, the liquid is pre-lubricated by spraying liquid into the inlet of the handpiece 2 through the third check valve 43 which is reversely rotated by the gear pump 5 in the time of establishing the pressure difference between the gas-liquid separator 3 and the liquid spraying port 9, and the cooling liquid in the gas-liquid separator 3 is pressurized to the liquid spraying port 9.
Claims (8)
1. The utility model provides a single screw compressor prevents liquid hammer auxiliary system, be equipped with air inlet (1), hydrojet mouth (9) and gas vent (4) on single screw compressor's aircraft nose (2), gas vent (4) are connected with vapour and liquid separator (3) through the pipeline to set up No. three check valve (43) on the pipeline, the top of vapour and liquid separator (3) sets up gas outlet (10) that are used for exporting compressed gas, the bottom of vapour and liquid separator (3) and hydrojet mouth (9) intercommunication, its characterized in that, the bottom of aircraft nose (2) is equipped with leakage fluid dram (11), leakage fluid dram (11) set up gear pump (5), the export of gear pump (5) is connected with the bottom of vapour and liquid separator (3).
2. The auxiliary system for preventing the liquid impact of the single-screw compressor as claimed in claim 1, wherein the liquid outlet (11) is provided with a liquid level switch (8), and the liquid level switch (8) is connected with the gear pump (5) and is used for controlling the opening and closing of the gear pump (5).
3. The auxiliary system for preventing liquid impact of single screw compressor according to claim 2 is characterized in that a pipeline sight glass (7) and an electromagnetic valve (6) are arranged on the connecting pipeline of the gear pump (5) and the gas-liquid separator (3).
4. The auxiliary system for preventing the liquid hammer of the single-screw compressor is characterized by being provided with a controller, wherein the controller is connected with the electromagnetic valve (6) and is used for controlling the opening and the closing of the electromagnetic valve (6);
the controller is connected with the liquid level switch (8), and the controller is connected with the gear pump (5) and is used for controlling the opening and closing and the rotating direction of the gear pump (5).
5. The auxiliary system for preventing liquid hammer of single screw compressor as claimed in claim 4, wherein said controller is a PLC controller.
6. The auxiliary system for preventing liquid hammer of single screw compressor as claimed in claim 4, wherein a first check valve (41) is arranged between the gear pump (5) and the liquid discharge port (11).
7. The auxiliary system for preventing liquid hammer of single screw compressor according to claim 6 is characterized in that a bypass pipe is arranged between the gear pump (5) and the first check valve (41), and the other end of the bypass pipe is connected with the air inlet (1).
8. The auxiliary system for preventing the liquid impact of the single-screw compressor as claimed in claim 7, wherein a second check valve (42) is arranged on the bypass pipe, when the single-screw compressor is started, the gear pump (5) is reversed, the electromagnetic valve (6) is opened, and the cooling liquid at the bottom of the gas-liquid separator (3) is pumped into the air inlet (1) of the machine head (2) through the second check valve (42) for pre-lubrication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920749478.2U CN209976792U (en) | 2019-05-23 | 2019-05-23 | Auxiliary system for preventing liquid impact of single screw compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920749478.2U CN209976792U (en) | 2019-05-23 | 2019-05-23 | Auxiliary system for preventing liquid impact of single screw compressor |
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| CN209976792U true CN209976792U (en) | 2020-01-21 |
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| CN201920749478.2U Active CN209976792U (en) | 2019-05-23 | 2019-05-23 | Auxiliary system for preventing liquid impact of single screw compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043468A (en) * | 2019-05-23 | 2019-07-23 | 好米动力设备有限公司 | A kind of single screw compressor liquid impact prevention auxiliary system |
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2019
- 2019-05-23 CN CN201920749478.2U patent/CN209976792U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043468A (en) * | 2019-05-23 | 2019-07-23 | 好米动力设备有限公司 | A kind of single screw compressor liquid impact prevention auxiliary system |
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