CN109440856B - Water supply system and water supply method for engine heat test - Google Patents
Water supply system and water supply method for engine heat test Download PDFInfo
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- CN109440856B CN109440856B CN201811604463.3A CN201811604463A CN109440856B CN 109440856 B CN109440856 B CN 109440856B CN 201811604463 A CN201811604463 A CN 201811604463A CN 109440856 B CN109440856 B CN 109440856B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 735
- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000001502 supplementing effect Effects 0.000 claims abstract description 17
- 239000000110 cooling liquid Substances 0.000 claims description 21
- 238000001914 filtration Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 description 9
- 238000001514 detection method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/02—Methods or layout of installations for water supply for public or like main supply for industrial use
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Structural Engineering (AREA)
- Testing Of Engines (AREA)
Abstract
The invention relates to a water supply system and a water supply method for engine heat trial, comprising a large water tank, a plurality of heat trial benches and a plurality of engine water circulation systems; the hot test bench comprises a rack and a small water tank; the large water tank is communicated with the small water tank to form a large water tank water supply system, and the small water tank is communicated with a corresponding engine water circulation system to form a small water tank water supply system; a large water tank water supply port is arranged on the large water tank; the small water tank is provided with a small water tank water supply port and a small water tank water return port; the engine water circulation system comprises an engine water inlet, an engine water outlet, a warm air inlet and a warm air outlet; the small water tank water supplementing port is provided with a water supplementing pipe, and the small water tank water supplementing pipe is communicated with the large water tank water supplying port; the water inlet and the warm air inlet of the engine are respectively communicated with the water supply port of the small water tank, and the water outlet and the warm air inlet of the engine are respectively communicated with the water return port of the small water tank. The invention can avoid influencing the hot test process due to the ultrahigh water temperature.
Description
Technical Field
The invention relates to engine heat test equipment, in particular to a water supply system and a water supply method for engine heat test.
Background
The engine hot test is to test the ignition of an engine. In short, a condition capable of igniting is created for the engine on the bench, the engine is operated, and the assembly quality of the engine is detected through two modes of bench monitoring and manual detection.
Under normal conditions, a small water tank is arranged on a thermal test bench to simulate the state of the engine on the whole vehicle, so that the optimal state of the test is achieved, and during the thermal test, about 30% of heat can be taken away by cooling water due to the fact that the engine runs, and during the long-time thermal test, the water temperature can be continuously increased until the normal running of the thermal test process is affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a water supply system and a water supply method for an engine thermal test, which not only have sufficient water supply quantity, but also can avoid influencing the thermal test process due to ultrahigh water temperature during the thermal test.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the technical scheme is as follows:
a water supply system for engine heat trial comprises a large water tank, a plurality of heat trial benches and a plurality of engine water circulation systems; the hot test bench comprises a rack and a small water tank arranged on the rack; the large water tank is communicated with the small water tank to form a large water tank water supply system, and the small water tank is communicated with a corresponding engine water circulation system to form a small water tank water supply system;
a large water tank water supply port is arranged on the large water tank;
a small water tank water supplementing pipe, a small water tank water supply port and a small water tank water return port are arranged on the small water tank; the small water tank water supplementing pipe is provided with a first pneumatic control valve;
the engine water circulation system comprises an engine main pipeline, an engine water inlet and an engine water outlet which are arranged at two ends of the engine main pipeline, a warm air inlet pipe and a warm air outlet pipe which are arranged on the engine main pipeline and are communicated with the engine main pipeline, and a thermostat arranged on the engine main pipeline; a warm air inlet is arranged on the warm air inlet pipe, and a warm air outlet is arranged on the warm air outlet pipe;
the large water tank water supply system comprises a main water supply pipeline which is communicated with the large water tank water supply port and the small water tank water supplementing pipe;
the small water tank water supply system comprises a small water tank water supply pipeline which is communicated with the small water tank water supply port and the engine water inlet, a water supply branch pipe which is arranged on the small water tank water supply pipeline and is communicated with the warm air inlet, a small water tank water return pipeline which is communicated with the engine water outlet and the small water tank water return port, a water return branch pipe which is arranged on the small water tank water return pipeline and is communicated with the warm air outlet, and an internal circulation branch pipe which is communicated with the water supply branch pipe and the water return branch pipe; the small water tank water supply pipeline is sequentially provided with a small water tank water pump, a Y-shaped filter and a water supply pipeline pressure sensor according to the water flow direction; the small water tank water return pipeline is provided with a second pneumatic control valve, the second pneumatic control valve is arranged between a small water tank water return port and a water return branch pipe, the water supply branch pipe is provided with a fourth pneumatic control valve, and the fourth pneumatic control valve is arranged between the inner circulation branch pipe and the small water tank water supply pipeline; and the internal circulation branch pipe is provided with a pneumatic control valve III.
Further, a large water tank water return port is arranged on the large water tank; the small water tank is provided with a small water tank overflow port, and a small water tank overflow pipe is arranged at the small water tank overflow port; the large water tank water supply system further comprises a water return tank, a water return collecting pipe communicated with the small water tank overflow pipe and the water return tank, and a main water return pipeline communicated with the water return tank and the large water tank water return port, wherein a pressure regulating device and at least 1 large water tank water pump are arranged on the main water supply pipeline; the main return water pipeline is sequentially provided with at least 1 return water tank water pump, 3 barrel filters and a radiator according to the water flow direction.
Further, a filtering device is arranged in the water return tank, and a pressure detection device is arranged on the barrel filter.
Further, the large water tank water supply system further comprises a heat dissipation pipeline which is communicated with the large water tank and the water return tank.
Further, the small water tank water supply system further comprises a small water tank internal circulation pipeline arranged on the small water tank water supply pipeline, and the other end of the small water tank internal circulation pipeline is communicated with the small water tank water return port or the small water tank water return pipeline.
Further, a large water tank temperature sensor, a large water tank liquid level meter and a large water tank overhaul port are arranged on the large water tank.
Further, the small water tank is also provided with a small water tank heater, a small water tank temperature sensor, an air vent, a drain outlet and a small water tank liquid level meter.
The small water tank water return pipeline is also provided with an air charging pipeline, the air charging pipeline is arranged between the water outlet of the engine and the second air control valve, and the air charging pipeline is provided with the fifth air control valve.
The second technical scheme is as follows:
a water supply method of a water supply system for engine heat trial use comprises the following steps:
firstly, cooling liquid is manually or automatically added into a large water tank, water is supplied to a small water tank of each heat test bench through a large water tank water pump for use, backwater of the small water tank of all heat test benches flows into a backwater tank through a small water tank overflow pipe and a backwater collecting pipe, a filtering device in the backwater tank carries out primary filtering on the used cooling liquid, then the cooling liquid in the backwater tank 22 is pumped into the large water tank through the backwater tank water pump, and pipelines of the backwater tank and the large water tank are further filtered through three barrel filters, and then the cooling liquid is returned to the large water tank after being radiated by a large water tank radiator.
Further, the water supply method of the small water tank water supply system specifically comprises the following steps:
when the heat test bench is used, the small water tank water supplementing port receives cooling liquid flowing in from the large water tank, then flows out from the small water tank water supplying port, one path of liquid flows back to the small water tank from the small water tank internal circulation inlet after passing through the small water tank water pump and the Y-shaped filter, the other path of liquid flows to the engine water circulation system along the small water tank water supplying pipeline, and the water inlet pressure of the engine is monitored in real time through the water supplying pipeline pressure sensor in the small water tank water supplying pipeline;
when the test is started, the thermostat cannot be opened due to insufficient water temperature, at the moment, the pneumatic control valve IV and the pneumatic control valve II are opened, primary water flowing out of the small water tank enters from the warm air inlet pipe and flows out of the warm air outlet pipe and the engine water outlet simultaneously, and then flows back to the small water tank through the small water tank water return pipeline and the small water tank water return port, so that a waterway large circulation between the engine and the small water tank is formed; when the water added into the engine completely discharges the air in the water circulation system of the engine, the air control valve II and the air control valve IV are closed, and the thermostat is not opened at the moment, so that all water inlet pipelines of the water circulation system of the engine are in a closed state, the air control valve III is opened to enable the internal pipelines of the water circulation system of the engine to be communicated, the water which enters the water circulation system of the engine circulates in the engine by means of a water pump carried by the engine, at the moment, the water temperature can rise to more than 80 ℃ in a short time, the thermostat is opened from the inside of the engine, and at the moment, the opening state of the thermostat can be judged according to the change of the water inlet pressure; when the thermostat 18 is not opened but the water temperature is ultrahigh, the air control valve II 39 and the air control valve IV are opened, the air control valve III is closed, the low-temperature water of the small water tank is supplied into the engine water circulation system again for cooling until the thermostat is opened, after the thermostat is opened, the engine is fed with water from the water inlet of the engine, the air control valve IV and the air control valve III are closed, and the air control valve II is opened, so that complete large circulation is formed.
Compared with the prior art, the invention has the technical effects that:
according to the invention, the small water tank internal circulation pipeline of the small water tank is arranged through the pneumatic control three-way ball valve, so that the small water tank water pump can not stop when an engine is replaced for testing, and the service life of the water pump is prevented from being influenced by frequent starting; the invention is also provided with an air charging pipeline which can be used for detecting the air tightness of the engine cylinder body of the small water tank; the small water tank is provided with the temperature sensor and the heater, so that the water in the small water tank is heated to 60-80 ℃, and the time required for completing the large circulation of the water circulation system of the engine is shortened; the large water tank water supply system not only realizes the water supply of the small water tank, but also can recycle the circulating water of the small water tank, thereby reducing the waste of water and saving water resources; the heat dissipation pipeline can be arranged to ensure the influence of high external temperature in summer on the temperature of the cooling liquid of the large water tank through the circulating cooling between the large water tank and the backwater tank.
Drawings
FIG. 1 is a system diagram of one embodiment of the present invention;
FIG. 2 is a schematic diagram of a large tank water supply system in accordance with one embodiment of the present invention;
FIG. 3 is a system diagram of a small tank water supply system in accordance with one embodiment of the present invention;
FIG. 4 is a perspective view of a thermal test stand in accordance with one embodiment of the present invention;
FIG. 5 is a schematic view of a thermal test bench according to an embodiment of the invention;
in the figure: 1. a large water tank, a large water tank 2 and an engine water circulation system; 3. a frame, 4, a small water tank; 5. a large water tank water supply system, a small water tank water supply port, a small water tank water return port and a small water tank overflow port; 10. a small water tank water supplementing pipe, 11 and a pneumatic control valve I; 12. the small water tank overflow pipe, 13, an engine main pipeline, 14, an engine water inlet, 15, an engine water outlet, 16, a warm air inlet pipe, 17, a warm air outlet pipe, 18, a thermostat, 19, a warm air inlet, 20, a warm air outlet, 21, a main water supply pipeline, 22, a water return tank, 23, a water return collecting pipe, 24, a main water return pipeline, 25 and a heat dissipation pipeline; 26. pressure regulating device, 27, big water tank water pump; 28. the water tank water pump, 29, the barrel filter, 30, the radiator, 31, the small water tank water supply pipeline, 32, the water supply branch pipe, 33, the small water tank water return pipeline, 34, the water return branch pipe, 35 and the internal circulation branch pipe; 36. the device comprises a small water tank water pump, 37, a Y-shaped filter, 38, a water supply pipeline pressure sensor, 39, a pneumatic control valve II, 40, a pneumatic control valve IV, 41, a pneumatic control valve III, 42, a pneumatic control three-way ball valve, 43, a small water tank internal circulation pipeline, 44, a pressure detection device, 45, a large water tank temperature sensor, 46, a large water tank liquid level meter, 47, a small water tank heater, 48, a small water tank temperature sensor, 50, a main water supply branch pipe, 51, a valve, 52, a water return branch pipe, 53, an A port, 54, a B port, 55, a C port, 56, a small water tank liquid level meter, 57, a pneumatic control valve V, 58 and an air inflation pipeline.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
One embodiment of an engine heat test water supply system as shown in fig. 1-5 comprises a large water tank 1, a plurality of heat test benches and a plurality of engine water circulation systems 2; the hot test bench comprises a rack 3 and a small water tank 4 arranged on the rack 3; the large water tank 1 is communicated with the small water tank 4 to form a large water tank water supply system 5, and the small water tank 4 is communicated with the corresponding engine water circulation system 2 to form a small water tank water supply system 6;
a large water tank water supply port and a large water tank water return port are arranged on the large water tank 1;
the small water tank 4 is provided with a small water tank water supplementing pipe 10, a small water tank water supply port 7, a small water tank water return port 8 and a small water tank overflow port 9; the small water tank water supplementing pipe 10 is provided with a first pneumatic control valve 11; a small water tank overflow pipe 12 is arranged at the small water tank overflow port 9,
the engine water circulation system 2 comprises an engine main pipeline 13, an engine water inlet 14 and an engine water outlet 15 which are arranged at two ends of the engine main pipeline 13, a warm air inlet pipe 16 and a warm air outlet pipe 17 which are arranged on the engine main pipeline 13 and communicated with the engine main pipeline 13, and a thermostat 18 which is arranged on the engine main pipeline 13, wherein the thermostat 18 is arranged at a position close to the engine water inlet 14; a warm air inlet 19 is arranged on the warm air inlet pipe 16, and a warm air outlet 20 is arranged on the warm air outlet pipe 17;
the large water tank water supply system 5 comprises a main water supply pipeline 21 which is communicated with the large water tank water supply port and the small water tank water supplementing pipe 10, a water return tank 22, a water return collecting pipe 23 which is communicated with the small water tank overflow pipe 12 and the water return tank 22, a main water return pipeline 24 which is communicated with the water return tank 22 and the large water tank water return port, and a heat dissipation pipeline 25 which is communicated with the large water tank heat dissipation port and the water return tank 22; at least 1 big water tank water pump 27 and a pressure regulating device 26 are arranged on the main water supply pipeline 21; at least 1 backwater tank water pump 28, three barrel filters 29 and a radiator 30 are sequentially arranged on the main backwater pipeline 24 according to the water flow direction; three precision filter cores are respectively arranged in the three barrel filters 29;
the small water tank water supply system 6 comprises a small water tank water supply pipeline 31 which is communicated with the small water tank water supply port 7 and the engine water inlet 14, a water supply branch pipe 32 which is arranged on the small water tank water supply pipeline 31 and is communicated with the warm air inlet 19, a small water tank water return pipeline 33 which is communicated with the engine water outlet 15 and the small water tank water return port 8, a water return branch pipe 34 which is arranged on the small water tank water return pipeline 33 and is communicated with the warm air outlet 20, and an internal circulation branch pipe 35 which is communicated with the water supply branch pipe 32 and the water return branch pipe 34; the small water tank water supply pipeline 31 is sequentially provided with a small water tank water pump 36, a Y-shaped filter 37 and a water supply pipeline pressure sensor 38 according to the water flow direction, and the water supply pipeline pressure sensor 38 is arranged at one end close to the water inlet 14 of the engine; the small water tank water return pipeline 33 is provided with a second pneumatic control valve 39, the second pneumatic control valve 39 is arranged between the small water tank water return port 8 and the water return branch pipe 34, the water supply branch pipe 32 is provided with a fourth pneumatic control valve 40, and the fourth pneumatic control valve 40 is arranged between the internal circulation branch pipe 35 and the small water tank water supply pipeline 31; the internal circulation branch pipe 35 is provided with a third pneumatic control valve 41. The small water tank water supply pipeline 31 can also be used for detecting the air tightness of the engine cylinder body of the small water tank 4; the small water tank 4 is provided with the temperature sensor and the heater, so that the water in the small water tank 4 is heated to 60-80 ℃, and the time required for completing the large circulation of the engine water circulation system 2 is shortened; the large water tank water supply system 5 not only realizes the water supply of the small water tank 4, but also can recycle the circulating water of the small water tank 4, reduce the waste of water and save water resources. The heat dissipation pipeline 25 can be arranged to ensure the influence of higher external temperature in summer on the temperature of the cooling liquid of the large water tank 1 through the circulating cooling between the large water tank 1 and the backwater tank 22.
Further, the small water tank water supply system 6 further includes a small water tank 4 internal circulation pipeline 43 disposed on the small water tank water supply pipeline 31 through a pneumatic control three-way ball valve 42, and the other end of the small water tank internal circulation pipeline 43 is communicated with the small water tank water return port 8 or the small water tank water return pipeline 33. The small water tank 4 and the small water tank internal circulation pipeline 43 are arranged through the pneumatic control three-way ball valve 42, so that the small water tank water pump 36 can be stopped when an engine is replaced and tested, and the influence of frequent starting on the service life of the water pump is avoided.
Further, the pneumatic control three-way ball valve 42 comprises an A port 53, a B port 54 and a C port 55; the port A53 is communicated with a water supply pipeline near one end of the small water tank 4, the port C55 is communicated with a water supply pipeline near one end of the engine water circulation system 2, and the port B54 is communicated with a small water tank internal circulation pipeline 43 of the small water tank 4.
Further, an air charging pipeline 58 is further arranged on the small water tank water return pipeline 33, the air charging pipeline 58 is arranged between the engine water outlet 15 and the air control valve II 39, and the air charging pipeline 58 is provided with an air control valve V57.
Further, a filtering device is disposed in the water return tank 22, a pressure detecting device 44 is disposed on the barrel filter 29, and the pressure detecting device 44 is a pressure gauge or a pressure sensor.
Further, a large water tank temperature sensor 45, a large water tank level gauge 46 and a large water tank overhaul port are arranged on the large water tank 1.
Further, the small water tank 4 is further provided with a small water tank heater 47, a small water tank temperature sensor 48, a vent, a drain outlet and a small water tank level gauge 56; further, the small water tank water supply port 7 is disposed above the small water tank heater 47, so that dry heating of the heater in the absence of water can be avoided. Further, the small tank gauge 56 may employ 2 gauges, 1 of which are visible gauges.
Further, the number of the large tank water pumps 27 is 2, and the 2 large tank water pumps 27 are respectively communicated with the main water supply pipeline 21 through the main water supply branch pipes 50. The main water supply branch pipe 50 is provided with a valve 51 for controlling the main water supply branch pipe 50 to be opened or closed.
Further, the number of the water return tank water pumps 28 is 2, wherein 1 water return tank water pump 28 is communicated with the main water return pipeline 24 and the water return tank 22 through a water return branch pipe 52. The return branch pipe 52 is provided with a valve 51 for controlling the return branch pipe 52 to be opened or closed.
Further, a valve 51 for controlling the opening or closing of the heat dissipation pipe 25 is provided on the heat dissipation pipe 25.
Further, the pressure regulating device 26 is a pressure regulating valve.
Further, the small water tank water supply pipeline 31, the water supply branch pipe 32, the small water tank water return pipeline 33, the water return branch pipe 34, the internal circulation branch pipe 35, the small water tank internal circulation pipeline 43, the small water tank water supplementing pipe 10, the small water tank water pump 36, the Y-shaped filter 37, the water supply pipeline pressure sensor 38, the air control valve II 39, the air control valve IV 40, the air control valve III 41 and the air control valve I11 are all arranged on the frame 3.
The application method of the invention comprises the following steps:
the use method of the large water tank water supply system 5 comprises the following steps:
in the use process, the cooling liquid is manually or automatically added into the large water tank 1, the large water tank pump 27 is used for supplying water to the small water tank 4 of each heat test bench, and the main water supply pipeline 21 is provided with the pressure regulating device 26, so that the water supply pressure is adjustable; the backwater of the small hot test bench water tank 4 flows into the backwater tank 22 through the small water tank overflow pipe and the backwater collecting pipe 23, the used cooling liquid is filtered for the first time by the filtering device in the backwater tank 22, then the cooling liquid in the backwater tank 22 is pumped into the large water tank 1 through the backwater tank water pump 28 according to the control of the liquid level meter, three barrel filters 29 (three precision filtering devices are respectively arranged in the interior) are arranged between the backwater tank 22 and the pipelines of the large water tank 1, the cooling liquid after three-stage filtering is ensured to reach a clean state to the greatest extent, the three barrel filters 29 are provided with pressure gauges or pressure sensors, the pressure change can be timely presented when the pipeline is blocked by more dirt, the manual observation can be realized, and the automatic alarm can be realized only by cleaning the filtering device at the moment; after three-stage filtration, the high-temperature cooling liquid from the engine passes through the radiator 30, so that the temperature of the cooling liquid is reduced to the greatest extent, and the cooling liquid in the large water tank 1 is ensured to be in a normal temperature state for a long time; the large water tank 1 is provided with a large water tank temperature sensor, when the cooling liquid with higher external temperature in summer is cooled slowly, a heat dissipation pipeline 25 between the large water tank 1 and the water return tank 22 can be opened, so that the cooling liquid is continuously cooled circularly between the large water tank 1 and the water return tank 22; the large water tank water pump 27 and the backwater tank water pump 28 are all used for one time, so that the hot test bench can be tested for 24 hours without stopping.
The using method of the small water tank water supply system 6 comprises the following steps:
when the heat test bench is used, the small water tank water supplementing port receives cooling liquid flowing in from the large water tank 1, then flows out from the small water tank water supplying port 7 (the small water tank water supplying port 7 is arranged above the small water tank heater to avoid dry burning of the small water tank heater when no water exists), passes through the small water tank water pump 36 (the small water tank water pump 36 adopts an adjustable pressure water pump to supply adjustable pressure water) and the Y-shaped filter 37 (the Y-shaped filter filters and then enters the engine to avoid damage to the engine cylinder body due to the filtering of impurities in the liquid), at the moment, one path of liquid flows back to the small water tank 4 from the internal circulation inlet of the small water tank 4 through the A port 53 and the B port 54 of the pneumatic control three-way ball valve 42, (when the engine test is replaced, the small water tank water pump 36 can be stopped to avoid frequent starting to influence the service life of the water pump), and the other path of liquid is connected to the engine water circulation system 2 along the small water tank water supply pipeline 31 through the A port 53 and the C port 55 of the pneumatic control three-way ball valve 42, and the arrangement of the pressure sensor 38 in the small water tank water supply pipeline 31 can monitor the water inlet pressure of the engine in real time;
in the general engine water circulation system 2, the thermostat 18 is arranged close to the engine water inlet 14, a certain temperature is required for opening the thermostat 18 to be generally above 80 ℃, when the test is started, the thermostat 18 cannot be opened due to insufficient water temperature, at the moment, the air control valve IV 40 and the air control valve II 39 are opened, primary water flowing out of the small water tank 4 enters from the warm air inlet pipe 16 and flows out of the warm air outlet pipe 17 and the engine water outlet 15 simultaneously, and then flows back to the small water tank 4 through the small water tank water return pipe 33 and the small water tank water return port 8, so that the waterway large circulation between the engine and the small water tank 4 is formed; after the air in the engine is completely discharged by the water added into the engine, the air control valve II 39 and the air control valve IV 40 are closed, the thermostat 18 is not opened at the moment, so that all the water inlet pipelines of the engine water circulation system 2 are in a closed state, the air control valve III 41 is opened to enable the pipelines in the engine to be communicated, the water in the engine circulates in the engine by means of the water pump in the engine, the water temperature can rise to more than 80 ℃ in a short time, the thermostat 18 is opened from the inside of the engine, and the opening state of the thermostat 18 can be judged according to the change of the inlet water pressure (the pressure sensor 38 of the water supply pipeline in the small water tank water supply pipeline 31); when the thermostat 18 is not opened but the water temperature is too high (the temperature is generally set to be more than 95 degrees and can be set by a user according to the needs), the air control valve II 39 and the air control valve IV 40 are opened, the air control valve III 41 is closed, the low-temperature water of the small water tank 4 is fed into the engine again to cool, the thermostat 18 can be opened generally by 2 to 3 cycles, after the thermostat 18 is opened, the engine is fed with water from the engine water inlet 14, the air control valve IV 40 and the air control valve III 41 are closed, and the air control valve II 39 is opened, so that a complete large cycle is formed.
In order to complete the large circulation of the engine water circulation system 2 as soon as possible, the small water tank 4 is provided with a temperature sensor and a heater, and the water in the small water tank 4 is heated to 60-80 ℃; when the temperature of the small water tank 4 is ultrahigh, the first pneumatic control valve 11 is opened, normal-temperature water supplied by the large water tank 1 is added into the small water tank 4, and the small water tank 4 is cooled.
In addition, the small water tank water supply system 6 has the function of air tightness detection, before the water is supplied to the engine, the air control valve III 41 is opened, the air control valve II 39 and the air control valve IV 40 are closed, the small water tank water supply pipeline 31 is connected with the small water tank internal circulation pipeline 43 through the air control three-way ball valve 42, the small water tank water supply pipeline 31 is disconnected with the engine water circulation system 2 (the port A53 to the port B54 are connected (the port C55 is not connected), then the air control valve V57 is opened to supply compressed air to the interior of the engine, after the air pressure is enough, the air control valve V57 is closed, a closed space is formed, and the water supply pipeline pressure sensor 38 detects whether the engine cylinder body has leakage or not according to the change of the air pressure (in the small water tank water supply pipeline 31).
The above described embodiments are only preferred examples of the invention and are not exhaustive of the possible implementations of the invention. Any obvious modifications thereof, which would be apparent to those skilled in the art without departing from the principles and spirit of the present invention, should be considered to be included within the scope of the appended claims.
Claims (10)
1. The water supply system for the engine heat test is characterized by comprising a large water tank (1), a plurality of heat test benches and a plurality of engine water circulation systems (2); the hot test bench comprises a rack (3), and a small water tank (4) arranged on the rack (3); the large water tank (1) is communicated with the small water tank (4) to form a large water tank water supply system (5), and the small water tank (4) is communicated with the corresponding engine water circulation system (2) to form a small water tank water supply system (6);
a large water tank water supply port is arranged on the large water tank (1);
a small water tank water supplementing pipe (10), a small water tank water supply port (7) and a small water tank water return port (8) are arranged on the small water tank (4); a pneumatic control valve I (11) is arranged on the small water tank water supplementing pipe (10);
the engine water circulation system (2) comprises an engine main pipeline (13), an engine water inlet (14) and an engine water outlet (15) which are arranged at two ends of the engine main pipeline (13), a warm air inlet pipe (16) and a warm air outlet pipe (17) which are arranged on the engine main pipeline (13) and communicated with the engine main pipeline (13), and a thermostat (18) arranged on the engine main pipeline (13); a warm air inlet (19) is arranged on the warm air inlet pipe (16), and a warm air outlet (20) is arranged on the warm air outlet pipe (17);
the large water tank water supply system (5) comprises a main water supply pipeline (21) which is communicated with the large water tank water supply port and the small water tank water supplementing pipe (10), and at least 1 large water tank water pump (27) and a pressure regulating device (26) are arranged on the main water supply pipeline (21);
the small water tank water supply system (6) comprises a small water tank water supply pipeline (31) which is communicated with the small water tank water supply port (7) and the engine water inlet (14), a water supply branch pipe (32) which is arranged on the small water tank water supply pipeline (31) and is communicated with the warm air inlet (19), a small water tank water return pipeline (33) which is communicated with the engine water outlet (15) and the small water tank water return port (8), a water return branch pipe (34) which is arranged on the small water tank water return pipeline (33) and is communicated with the warm air outlet (20), and an internal circulation branch pipe (35) which is communicated with the water supply branch pipe (32) and the water return branch pipe (34); a small water tank water pump (36), a Y-shaped filter (37) and a water supply pipeline pressure sensor (38) are sequentially arranged on the small water tank water supply pipeline (31) according to the water flow direction; the small water tank water return pipeline (33) is provided with a pneumatic control valve II (39), the pneumatic control valve II (39) is arranged between the small water tank water return port (8) and the water return branch pipe (34), the water supply branch pipe (32) is provided with a pneumatic control valve IV (40), and the pneumatic control valve IV (40) is arranged between the inner circulation branch pipe (35) and the small water tank water supply pipeline (31); and the internal circulation branch pipe (35) is provided with a pneumatic control valve III (41).
2. The water supply system for engine heat use according to claim 1, wherein the large water tank (1) is provided with a large water tank return port; a small water tank overflow port (9) is arranged on the small water tank (4), and a small water tank overflow pipe (12) is arranged at the small water tank overflow port (9); the large water tank water supply system (5) further comprises a water return tank (22), a water return collecting pipe (23) communicated with the small water tank overflow pipe (12) and the water return tank (22), a main water return pipeline (24) communicated with the water return tank (22) and the large water tank water return port, and at least 1 water return tank water pump (28), 3 barrel filters (29) and a radiator (30) are sequentially arranged on the main water return pipeline (24) according to the water flow direction.
3. A water supply system for engine heat use according to claim 2, wherein a filter device is provided in the water return tank (22), and a pressure detecting device (44) is provided on the barrel filter (29).
4. A water supply system for engine thermal use according to claim 1, characterized in that said large tank water supply system (5) further comprises a heat-dissipating duct (25) communicating said large tank (1) with a return tank (22).
5. A water supply system for engine heat use according to claim 1, wherein the small tank water supply system (6) further comprises a small tank internal circulation line (43) provided on the small tank water supply line (31), and the other end of the small tank internal circulation line (43) is communicated with the small tank return port (8) or the small tank return line (33).
6. A water supply system for engine heat use according to claim 1, characterized in that the big water tank (1) is provided with a big water tank temperature sensor (45) and a big water tank level gauge (46).
7. A water supply system for engine heat use according to claim 1, wherein the small water tank (4) is further provided with a small water tank heater (47), a small water tank temperature sensor (48), a vent, a drain, and a small water tank level gauge (56).
8. The water supply system for engine heat test according to claim 1, wherein the small water tank water return pipeline (33) is further provided with an air charging pipeline (58), the air charging pipeline (58) is arranged between the engine water outlet (15) and the air control valve II (39), and the air charging pipeline (58) is provided with the air control valve V (57).
9. A water supply method of a water supply system for engine heat trial as claimed in claim 1, wherein the water supply method of the large tank water supply system comprises the steps of:
firstly, cooling liquid is manually or automatically added into a large water tank (1), water is supplied to a small water tank (4) of each heat test bench through a large water tank water pump (27) for use, backwater of the small water tank (4) of all heat test benches flows into a backwater tank (22) through a small water tank overflow pipe (12) and a backwater collecting pipe (23), a filtering device in the backwater tank (22) carries out primary filtration on the used cooling liquid, then the cooling liquid in the backwater tank (22) is pumped into the large water tank (1) through a backwater tank water pump (28), and the water is further filtered through three barrel filters (29) on pipelines of the backwater tank (22) and the large water tank (1) and then is cooled through a large water tank radiator and then returns to the large water tank (1).
10. A water supply method of a water supply system for engine heat trial as claimed in claim 1, wherein the water supply method of the small tank water supply system comprises the steps of:
when the heat test bench is used, the small water tank water supplementing port receives cooling liquid flowing in from the large water tank (1), then flows out from the small water tank water supplying port (7), one path of liquid flows back to the small water tank (4) from the internal circulation inlet of the small water tank (4) after passing through the small water tank water pump (36) and the Y-shaped filter (37), the other path of liquid flows to the engine water circulation system (2) along the small water tank water supplying pipeline (31), and the water inlet pressure of the engine is monitored in real time through the water supplying pipeline pressure sensor (38) in the small water tank water supplying pipeline (31);
when the test is started, the thermostat (18) cannot be opened due to insufficient water temperature, at the moment, the pneumatic control valve IV (40) and the pneumatic control valve II (39) are opened, primary water flowing out of the small water tank (4) enters from the warm air inlet pipe (16), simultaneously flows out of the warm air outlet pipe (17) and the engine water outlet (15), and then flows back to the small water tank (4) through the small water tank water return pipeline (33) and the small water tank water return port (8), so that a waterway large circulation between the engine and the small water tank (4) is formed; after the air in the engine water circulation system (2) is completely discharged by the water added into the engine, the air control valve II (39) and the air control valve IV (40) are closed, the thermostat (18) is not opened, so that all water inlet pipelines of the engine water circulation system (2) are in a closed state, the air control valve III (41) is opened to enable the internal pipelines of the engine water circulation system (2) to be communicated, the water which enters the engine water circulation system (2) circulates in the engine by means of a water pump carried by the engine, the water temperature can rise to more than 80 ℃ in a short time, the thermostat (18) is opened from the inside of the engine, and at the moment, the opened state of the thermostat (18) can be judged according to the change of the inlet water pressure; when the thermostat (18) is not opened but the water temperature is ultrahigh, the air control valve II (39) and the air control valve III (40) are opened, the air control valve III (41) is closed, the low-temperature water of the small water tank (4) is re-fed into the engine water circulation system (2) for cooling, the thermostat (18) is opened, after the thermostat (18) is opened, the engine is fed with water from the engine water inlet (14), the air control valve IV (40) and the air control valve III (41) are closed, and at the moment, the air control valve II (39) is opened, so that complete large circulation is formed.
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Address after: Floor 1, Building 10, Minshan Electromechanical Industrial Park, High tech Zone, Mianyang City, Sichuan Province, 621000 Applicant after: MIANYANG EFOUNTEX INTELLIGENT EQUIPMENT CO.,LTD. Address before: 621000 No.95, east section of Puming South Road, hi tech Zone, Mianyang City, Sichuan Province Applicant before: MIANYANG EFOUNTEX INTELLIGENT EQUIPMENT CO.,LTD. |
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Denomination of invention: A hot test engine water supply system and water supply method Granted publication date: 20231010 Pledgee: China Construction Bank Corporation Mianyang Branch Pledgor: MIANYANG EFOUNTEX INTELLIGENT EQUIPMENT CO.,LTD. Registration number: Y2024980032454 |
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