CN116296446B - Degassing test system, expansion tank test system and whole vehicle simulated cooling system - Google Patents
Degassing test system, expansion tank test system and whole vehicle simulated cooling systemInfo
- Publication number
- CN116296446B CN116296446B CN202310142323.3A CN202310142323A CN116296446B CN 116296446 B CN116296446 B CN 116296446B CN 202310142323 A CN202310142323 A CN 202310142323A CN 116296446 B CN116296446 B CN 116296446B
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- degassing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- 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
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- 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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- 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
- G01M15/04—Testing internal-combustion engines
- G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters
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- Chemical & Material Sciences (AREA)
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- Combustion & Propulsion (AREA)
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Abstract
The embodiment of the application relates to the technical field of vehicle cooling systems, and provides a degassing test system, an expansion tank test system and a vehicle simulation cooling system. A fixed amount of bubbles can be added through the bubble generator, and the state and change of the bubbles can be observed by means of the first transparent pipeline and the second transparent pipeline. The water inlet flow and the water return flow can be tested through the first flow detection piece and the second flow detection piece. Therefore, the degassing rate can be tested and the degassing qualitative evaluation can be carried out by controlling the quantity of the added bubbles, observing the states and changes of the bubbles at the upstream and downstream of the expansion tank and acquiring the relation between the water inflow and the water return flow, so that the cooling system of the whole vehicle can be conveniently tested, and the expansion tank can be conveniently developed.
Description
Technical Field
The application relates to the technical field of cooling systems for vehicles, in particular to a degassing test system, an expansion tank test system and a vehicle simulation cooling system.
Background
In general, a commercial vehicle mainly adopts an expansion tank to circulate to form a degassing circulation system, gas-water separation is realized by means of the expansion tank, and the degassed cooling liquid flows back to a main system at a water inlet pipe of a water pump through a water return pipe, so that the purpose of degassing the cooling system is achieved. In the related art, in order to achieve the purposes of high heat and long service life of an engine, more parts are arranged in the whole vehicle, so that more parts to be cooled in the whole vehicle are more and more, the trend and arrangement of pipelines of a cooling system become more complex, and further filling and circulating degassing of the cooling system are difficult, so that the cooling system of the whole vehicle is difficult to test.
Disclosure of Invention
Based on this, it is necessary to provide a degassing test system, an expansion tank test system and a vehicle simulated cooling system, so as to test the cooling system of the vehicle.
According to one aspect of the present application, an embodiment of the present application provides a degassing test system for a cooling system of a vehicle, the degassing test system including:
The first air inlet testing device comprises an air inlet testing pipeline, a bubble generator and a first flow detecting piece, wherein the air inlet testing pipeline comprises a first water inlet pipeline, a first transparent pipeline and a first water outlet pipeline which are sequentially connected along the water inlet direction, the outlet of the first water outlet pipeline is used for being communicated with the air inlet of the expansion tank, the bubble generator is connected with the water inlet pipeline and is used for adding bubbles into the water inlet pipeline, the first flow detecting piece is arranged on the first water outlet pipeline and is used for detecting the flow of fluid flowing through the first water outlet pipeline, and
The degassing test device comprises a degassing test pipeline and a second flow detection part, wherein the degassing test pipeline comprises a second water inlet pipeline, a second transparent pipeline and a second water outlet pipeline which are sequentially connected along the water outlet direction, and an inlet of the second water inlet pipeline is used for communicating a water outlet of the expansion tank;
the first transparent pipeline and the second transparent pipeline are used for observing bubbles.
In one embodiment, the degassing test apparatus further comprises:
One end of the first water collecting pipeline is connected with the second water inlet pipeline, and the other end of the first water collecting pipeline is connected with the second water outlet pipeline;
The first water collecting container is arranged on the first water collecting pipeline;
A first control member arranged on the second water inlet pipeline for controllably switching on or off the second transparent pipeline, and
The second control piece is arranged on the first water collecting pipeline and used for controllably switching on or switching off the first water collecting pipeline.
In one embodiment, the first water collection pipe includes:
the first water collecting main way is provided with the first water collecting container;
a first connecting pipe, one end of which is connected with the second water inlet pipe and the other end of which is detachably connected with one end of the first water collecting main pipe, and
One end of the second connecting pipeline is connected with the second water outlet pipeline, and the other end of the second connecting pipeline is detachably connected with the other end of the first water collecting main pipeline;
The first connecting pipeline, the second connecting pipeline, one end of the first water collecting main pipeline and one end of the first water collecting container, and the second control part are arranged between the other end of the first water collecting main pipeline and the other end of the first water collecting container.
In one embodiment, the first water collection line further comprises a first quick connector;
the first connecting pipeline and the second connecting pipeline are detachably connected with the first water collecting main pipeline respectively by means of the first quick connector.
In one embodiment, the degassing test apparatus further includes a first pressure detection member and a second pressure detection member;
the first pressure detection piece is arranged on the second water inlet pipeline and is used for detecting the fluid pressure before the fluid enters the second transparent pipeline;
the second pressure detection piece is arranged on the second water outlet pipeline and is used for detecting the pressure of the fluid flowing out of the second transparent pipeline.
In one embodiment, the first control member is disposed upstream and downstream of the second transparent conduit.
In one embodiment, the degassing test apparatus further comprises:
The second water collecting pipeline is connected with one end of the second water collecting pipeline;
A second water collecting container for collecting the fluid flowing out from the other end of the second water collecting pipeline, and
And the third control piece is arranged on the second water collecting pipeline and used for controllably switching on or switching off the second water collecting pipeline.
In one embodiment, the second water collection pipe includes:
A second water collecting main path, the second water collecting container is used for collecting the fluid flowing out from one end of the second water collecting main path, and
One end of the third connecting pipeline is connected with the second water outlet pipeline, and the other end of the third connecting pipeline is detachably connected with the other end of the second water collecting main pipeline;
Wherein the third control piece is arranged on the second water collecting main way and/or the third connecting pipeline.
In one embodiment, the second water collection line further comprises a second quick connector;
the third connecting pipeline is detachably connected with the second water collecting main pipeline by means of the second quick connector.
In one embodiment, the degassing test apparatus further includes two third pressure detection members;
The two third pressure detection pieces are arranged on the second water outlet pipeline and are arranged on the upstream and downstream of one end of the second water collecting pipeline, and the second water collecting pipeline is connected to the upstream and downstream of one end of the second water outlet pipeline.
In one embodiment, the degassing test system further comprises a second inlet gas test device;
the second air inlet testing device comprises a third water inlet pipeline, a third transparent pipeline and a third water outlet pipeline which are sequentially connected along the water inlet direction;
wherein the second air inlet testing device is arranged on a water inlet pipeline of a target piece in the cooling system, and the third transparent pipeline is used for observing bubbles.
According to another aspect of the present application, embodiments of the present application provide an expansion tank testing system, comprising an expansion tank and the degassing testing system of any of the above embodiments;
the air inlet of the expansion tank is communicated with the outlet of the first water outlet pipeline, and the water outlet of the expansion tank is communicated with the inlet of the second water inlet pipeline.
According to still another aspect of the present application, an embodiment of the present application provides a vehicle simulated cooling system, including the degassing test system described in any of the above embodiments.
Among above-mentioned degassing test system, expansion tank test system and whole car simulated cooling system, degassing test system includes first air inlet test device and degassing test device at least, and first air inlet test device includes at least air inlet test pipeline, bubble generator and first flow detection spare, and degassing test device includes at least degassing test pipeline and second flow detection spare. A fixed amount of bubbles can be added through the bubble generator, and the state and change of the bubbles can be observed by means of the first transparent pipeline and the second transparent pipeline. The water inlet flow and the water return flow can be tested through the first flow detection piece and the second flow detection piece. Therefore, the degassing rate can be tested and the degassing qualitative evaluation can be carried out by controlling the quantity of the added bubbles, observing the states and changes of the bubbles at the upstream and downstream of the expansion tank and acquiring the relation between the water inflow and the water return flow, so that the cooling system of the whole vehicle can be conveniently tested, and the expansion tank can be conveniently developed.
Additional aspects and advantages of embodiments of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the application.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the embodiments. The drawings are only for purposes of illustrating embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:
FIG. 1 is a schematic diagram of a degassing test system according to an embodiment of the application;
FIG. 2 is a schematic diagram of a first air intake testing device according to an embodiment of the application;
FIG. 3 is a schematic diagram of a degassing test apparatus according to an embodiment of the application;
FIG. 4 is a schematic diagram of a second air intake testing device according to an embodiment of the application;
FIG. 5 is a schematic diagram of a vehicle cooling system according to an embodiment of the present application;
FIG. 6 is a schematic diagram of an embodiment of an expansion tank testing system.
Reference numerals in the specific embodiments are as follows:
A degassing test system 1;
The first air inlet testing device 100, the first water inlet pipeline 111, the first transparent pipeline 112, the first water outlet pipeline 113, the bubble generator 120 and the first flow detecting piece 130;
The degassing test device 200, the second water inlet pipeline 211, the second transparent pipeline 212, the second water outlet pipeline 213, the second flow detection part 220, the first water collection main pipeline 231, the first connecting pipeline 232, the second connecting pipeline 233, the first quick connector 234, the first water collection container 240, the first control part f1, the second control part f2, the first pressure detection part p1, the second pressure detection part p2, the second water collection main pipeline 251, the third connecting pipeline 252, the second quick connector 253, the second water collection container 260, the third control part f3, the third pressure detection part p3 and the weighing device 270;
the second air inlet testing device 300, the third water inlet pipeline 310, the third transparent pipeline 320 and the third water outlet pipeline 330;
Expansion tank 2, air-cooled radiator 3, fan 4, water pump 5, cylinder body 6, oil cooler 7, shunt tubes 8, EGR cooler 9, urea nozzle cooler 10, retarder cooler 11, cylinder cover 12, engine outlet pipe 13, attemperator 14, warm air radiator 15, water tank 16, flow control valve 17.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, a detailed description of embodiments accompanied with figures is provided below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the application. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. The embodiments of the present application may be implemented in many other ways than those herein described, and those skilled in the art may make similar modifications without departing from the spirit of the application, so that the embodiments of the application are not limited to the specific embodiments disclosed below.
It will be appreciated that the terms "first," "second," and the like, as used herein, may be used to describe various terms, and are not to be interpreted as indicating or implying a relative importance or an implicit indication of the number of technical features being indicated. However, unless specifically stated otherwise, these terms are not limited by these terms. These terms are only used to distinguish one term from another. In the description of the embodiments of the present application, the meaning of "a plurality", "a number" or "a plurality" is at least two, for example, two, three, etc., unless explicitly defined otherwise.
In describing embodiments of the present application, unless explicitly stated or limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally formed, as being mechanically connected, as being electrically connected, as being directly connected, as being indirectly connected through an intervening medium, as being in communication with or in interaction with two elements, unless explicitly stated otherwise. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.
In the description of embodiments of the application, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature level is higher than the second feature level. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature level is less than the second feature level.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
In a cooling system of an engine of a vehicle, if air is entrained in a coolant, cavitation of a water path is accelerated by the air, which in turn may hinder heat transfer and coolant flow, and further cause defects such as piston ring wear and cylinder head cracking. Particularly at high temperatures, the air expands more than the coolant, causing the coolant to flow out of the expansion tank pressure cap or overflow tube causing a lack of fluid in the system. Under the limit condition, air can cause water loss of the water pump, locking of the piston and damage of the engine.
The main source of air in the cooling system is two dimensions of air generated by the water channel system or air entering the system. The generated gas in the system mainly comprises cooling liquid boiling at a local hot spot of an engine cylinder cover water jacket, an EGR (exhaust gas Recirculation) cooler, gas generated by a water pump air pocket and the like, and the air or exhaust gas enters the cooling system mainly caused by the reasons of cylinder gasket breakage or air compression cylinder gasket sealing leakage, water pump water sealing leakage, water pipe joint sealing leakage and the like.
Therefore, in order to remove air entrained in the cooling system, a deaeration system needs to be provided in the cooling system. There are various ways to deaerate the system, but all that is needed is to bypass 5-10% of the total amount of cooling fluid to a place where there is relatively no turbulence, separate air from the cooling fluid, and then return the cooling fluid to the cooling system.
In general, commercial vehicles mainly adopt an expansion tank for circulating to form a degassing circulation system, the expansion tank is arranged at a relatively high position of a cooling system, and cooling liquid with air can enter the upper part of the expansion tank from a degassing pipeline. Because the turbulence of the cooling liquid in the expansion tank is smaller, gas-water separation can be realized, and the deaerated cooling liquid flows back to the main system at the water inlet pipe of the water pump through the water return pipe, thereby achieving the purpose of deaerating the cooling system.
In the related art, in order to achieve the purposes of high heat and long service life of an engine, more components are arranged in the whole vehicle, so that more components needing cooling in the whole vehicle are more and more, and the trend and arrangement of pipelines of a cooling system become more complex. In particular, many branches or bypasses are connected in parallel in the cooling system, such as urea nozzle cooling or supply module heating. For another example, in heavy commercial vehicles provided with a retarder, the retarder generally needs to be connected in series in front of the engine and thermostat, arranged at the gearbox behind the engine, and requiring a large water flow. Therefore, the filling and the circulation degassing of the cooling system are difficult, so that the cooling system of the whole vehicle is difficult to test.
Based on the above, in order to solve at least some of the above problems, an embodiment of the present application provides a degassing test system, so as to test a cooling system of a whole vehicle.
The degassing test system is used for a cooling system of a vehicle, and the cooling system of the vehicle is a simulated cooling system. The degassing test system is applied to a simulated cooling system to quantitatively test related test indexes, so that the related indexes can be qualitatively tested. Vehicles include, but are not limited to, hybrid new energy commercial vehicles.
Fig. 1 shows a schematic structure of a degassing test system 1 according to an embodiment of the present application, fig. 2 shows a schematic structure of a first air intake test device 100 according to an embodiment of the present application, fig. 3 shows a schematic structure of a degassing test device 200 according to an embodiment of the present application, and for convenience of explanation, an expansion tank 2 is shown in fig. 1.
In some embodiments, referring to fig. 1, a degassing test system 1 is provided in an embodiment of the present application, and the degassing test system 1 includes a first air intake test device 100 and a degassing test device 200. The first air inlet testing device 100 is arranged on an air inlet pipeline of the expansion tank 2 of the simulated cooling system and is used for testing the air inlet pipeline of the expansion tank 2. The degassing test device 200 is arranged on the water outlet pipeline of the expansion tank 2 of the simulated cooling system and is used for testing the water outlet pipeline of the expansion tank 2. The intake line of the expansion tank 2 is a line through which the coolant to be deaerated flows into the expansion tank 2, and the outlet of the intake line of the expansion tank 2 communicates with the intake port of the expansion tank 2. The water outlet pipeline of the expansion tank 2 refers to a pipeline through which the cooling liquid after degassing by the expansion tank 2 flows out of the expansion tank 2, and the inlet of the water outlet pipeline of the expansion tank 2 is communicated with the water outlet of the expansion tank 2.
Referring to fig. 2 in combination with fig. 1, the first air intake testing apparatus 100 includes an air intake testing pipeline, a bubble generator 120 and a first flow detecting member 130. The air inlet test pipeline comprises a first water inlet pipeline 111, a first transparent pipeline 112 and a first water outlet pipeline 113 which are sequentially connected along the water inlet direction. The outlet of the first water outlet line 113 is used for communicating with the air inlet of the expansion tank 2. The first transparent pipe 112 is used for observing bubbles. The bubble generator 120 is connected to the water inlet line for adding bubbles into the water inlet line. The first flow detecting element 130 is disposed on the first water outlet pipeline 113, and is configured to detect a flow of fluid flowing through the first water outlet pipeline 113.
Referring to FIG. 3 in combination with FIG. 1, the degassing test apparatus 200 includes a degassing test line and a second flow detector 220. The degassing test pipeline includes a second water inlet pipeline 211, a second transparent pipeline 212 and a second water outlet pipeline 213 which are sequentially connected in the water outlet direction. The inlet of the second water inlet pipeline 211 is used for communicating with the water outlet of the expansion tank 2. The second transparent tube 212 is used to observe the bubbles. The second flow detecting element 220 is disposed on the second water outlet line 213, and is configured to detect a flow of fluid flowing through the second water outlet line 213.
A fixed amount of bubbles can be added through the bubble generator 120, and the state and change of the bubbles can be observed by means of the first transparent pipe 112 and the second transparent pipe 212. The inflow and return water flows can be tested by the first and second flow rate detecting members 130 and 220. Thus, quantitative evaluation can be performed. Thus, by controlling the amount of bubbles added, observing the state and change of bubbles upstream and downstream of the expansion tank 2, and obtaining the relationship between the inflow water flow rate and the return water flow rate, it is possible to perform a test of the degassing rate and a qualitative evaluation of degassing by means of quantitative evaluation. On the basis of qualitative evaluation of degassing, when an actual cooling system is tested, the air bubble generator 120, the first flow detection part 130 and the second flow detection part 220 are not required to be arranged, and evaluation is performed through the first transparent pipeline 112 and the second transparent pipeline 212, so that the situation that the cooling system is difficult to fill and circulate and degassing is improved, and the test of the cooling system of the whole vehicle is facilitated. In addition, in this process, the degassing test apparatus 200 can measure the flow rate of each phase in the gas-liquid two-phase flow without separating the gas-liquid two-phase flow.
In some embodiments, please continue to refer to fig. 3, and referring to fig. 1 in combination, the degassing test apparatus 200 further includes a first water collecting pipeline, a first water collecting container 240, a first control member f1, and a second control member f2. One end of the first water collecting pipeline is connected to the second water inlet pipeline 211, and the other end is connected to the second water outlet pipeline 213. The first water collecting container 240 is disposed on the first water collecting pipeline. The first control member f1 is disposed on the second water inlet pipe 211, and is configured to controllably switch on or off the second transparent pipe 212. The second control member f2 is arranged on the first water collecting pipeline and used for controllably switching on or switching off the first water collecting pipeline. Alternatively, the first water collecting container 240 may be a water collecting bottle.
In particular to some embodiments, the degassing test apparatus 200 has a first mode of operation and a second mode of operation. The method comprises the following steps:
(1) The degassing test apparatus 200 is in the first operation mode, the first control member f1 controllably opens the second transparent pipe 212, and the second control member f2 controllably closes the first water collecting pipe. At this time, the deaerating device in the first operation mode may be used to perform a test in cooperation with the first air intake testing device 100. In this way, the return water flowing out of the expansion tank 2 passes through the second water inlet pipe 211, the second transparent pipe 212, and the second water outlet pipe 213 in this order. By observing the state and change of the bubbles in the second transparent pipe 212 and combining the state of the bubbles in the first transparent pipe 112, quantitative evaluation of degassing can be performed, and further qualitative evaluation can be obtained. Alternatively, when observing the bubbles of the first transparent tube 112 and the second transparent tube 212, the manner of strong light irradiation may be used;
(2) The degassing test apparatus 200 is in the second operation mode, the first control member f1 controllably closes the second transparent pipe 212, and the second control member f2 controllably opens the second water collecting pipe. At this time, the degassing device in the second operation mode may be used to perform bubble quantitative detection or calibration. During measurement, the degassing test device 200 can be switched from the second working mode to the first working mode after the operation under the stable working condition for a short time, the weight and the volume of the cooling liquid in the first water collecting pipeline and the first water collecting container 240 can be sampled and measured, the measured value can be compared with the weight and the volume of the cooling liquid filled in the first water collecting pipeline and the first water collecting container 240, the volume and the content of bubbles can be obtained, and the quantitative test of the bubbles and the degassing can be realized. When the bubble observation qualitative test is carried out, the bubble content in different bubble states can be calibrated.
Thus, by providing the first control member f1 and the second control member f2, the degassing test apparatus 200 can be switched between the first operation mode and the second operation mode, and thus the degassing can be quantitatively and qualitatively evaluated.
In some embodiments, please continue to refer to fig. 3, in combination with fig. 1, the first water collecting pipe includes a first water collecting main 231, a first connecting pipe 232 and a second connecting pipe 233. The first water collecting main 231 is provided with a first water collecting container 240. One end of the first connection pipe 232 is connected to the second water inlet pipe 211, and the other end is detachably connected to one end of the first water collecting main 231. One end of the second connection pipe 233 is connected to the second water outlet pipe 213, and the other end is detachably connected to the other end of the first water collecting main 231. Optionally, the first water collecting line further comprises a first quick connector 234. The first connection pipe 232 and the second connection pipe 233 are detachably connected to the first water collecting main 231 by means of a first quick connector 234, respectively. Wherein, the second control member f2 is disposed between the first connecting pipe 232, the second connecting pipe 233, one end of the first water collecting main 231 and one end of the first water collecting container 240, and between the other end of the first water collecting main 231 and the other end of the first water collecting container 240.
In this way, the first connecting pipe 232 and the second connecting pipe 233 are detachably connected to the first water collecting main 231 respectively, and the second control member f2 is arranged at the corresponding positions, so that the first water collecting pipe can be replaced and installed conveniently, and the quantitative test of bubbles and degassing can be performed.
In some embodiments, please continue to refer to fig. 3, in combination with fig. 1, the degassing test apparatus 200 further includes a first pressure detection member p1 and a second pressure detection member p2. The first pressure detecting element p1 is disposed on the second water inlet pipe 211 and is used for detecting the pressure of the fluid before the fluid enters the second transparent pipe 212. The second pressure detecting element p2 is disposed on the second water outlet pipeline 213, and is configured to detect a fluid pressure after the fluid flows out from the second transparent pipeline 212. Thus, a qualitative assessment of outgassing may be made by monitoring the bubble status and changes in the second transparent tubing 212 at different pressure conditions.
In some embodiments, please continue to refer to fig. 3, in combination with fig. 1, the first control member f1 is disposed upstream and downstream of the second transparent pipeline 212. It is appreciated that when the degassing test apparatus 200 is in the first mode of operation, both first control members f1 controllably communicate with the second transparent tubing 212. In this manner, the reliability of switching operation of the degassing test apparatus 200 between the first operation mode and the second operation mode may be further improved.
In some embodiments, please continue to refer to fig. 3, in combination with fig. 1, the degassing test apparatus 200 further includes a second water collecting pipeline, a second water collecting container 260, and a third control member f3. One end of the second water collecting pipe is connected to the second water outlet pipe 213. The second water collecting container 260 is used for collecting fluid flowing out from the other end of the second water collecting pipeline. The third control member f3 is arranged on the second water collecting pipeline and used for controllably switching on or switching off the second water collecting pipeline. Alternatively, the second water collecting container 260 may be a water collecting tub.
Thus, in combination with what has been illustrated in some of the foregoing embodiments, the degassing test apparatus 200 also has a third mode of operation. The degassing test device 200 is in a third working mode, the cooling liquid in the expansion tank 2 is controlled at the lower liquid level, after the set working condition is stable in operation, the first control member f1 and the third control member f3 are opened, the second control member f2 is closed, and backwater is discharged into the second water collecting container 260. The amount of water discharged into the second water collecting container 260 is monitored by the weighing device 270, and at the same time, the change of bubbles in the second transparent pipe 212 is monitored. When the bubbles generated in the second transparent pipe 212 are obviously increased and become larger, the water discharge amount discharged into the second water collecting container 260 at the moment is recorded, namely the water loss amount allowed by the expansion tank 2 under the working condition.
In some embodiments, referring to fig. 3 in combination with fig. 1, the second water collecting line includes a second water collecting main 251 and a third connecting line 252. The second water collecting container 260 serves to collect fluid flowing out from one end of the second water collecting main 251. One end of the third connection pipe 252 is connected to the second water outlet pipe 213, and the other end is detachably connected to the other end of the second water collecting main 251. Optionally, the second water collecting pipeline further comprises a second quick connector 253, and the third connecting pipeline 252 is detachably connected with the second water collecting main 251 through the second quick connector 253. Wherein, the third control element f3 is arranged on the second water collecting main 251 and/or the third connecting pipeline 252. In this way, the second water collecting main channel 251 is detachably connected to the third connecting pipeline 252, and the third control member f3 is arranged at the corresponding position, so that the replacement, the installation and the water loss test of the expansion tank 2 are facilitated.
It should be noted that the first control member f1, the second control member f2, and the third control member f3 illustrated in some of the above embodiments may be provided as electrically controlled shut-off valves.
In some embodiments, please continue to refer to fig. 3, in combination with fig. 1, the degassing test apparatus 200 further includes two third pressure detection members p3. The two third pressure detecting members p3 are disposed on the second water outlet pipe 213, and disposed upstream and downstream of one end of the second water collecting pipe connected to the second water outlet pipe 213. In this way, in the water loss test of the expansion tank 2, the influence on the water loss in different pressure states can be monitored by monitoring the pressures upstream and downstream of the end of the second water collecting pipe connected to the second water outlet pipe 213, and qualitative evaluation of the water loss can be performed.
In some embodiments, please continue to refer to fig. 3, and referring to fig. 1 in combination, the third pressure detecting element p3 disposed upstream of the end of the second water collecting pipe connected to the second water outlet pipe 213 is the second pressure detecting element p2 illustrated in the previous embodiments.
Fig. 4 shows a schematic structural diagram of a second intake testing apparatus 300 according to an embodiment of the present application, and for convenience of explanation, only matters related to the embodiment of the present application are shown.
In some embodiments, referring to fig. 4, the degassing test system 1 further includes a second air intake test device 300. The second air inlet testing device 300 includes a third water inlet pipeline 310, a third transparent pipeline 320, and a third water outlet pipeline 330 sequentially connected along the water inlet direction. The second air inlet testing device 300 is arranged on the water inlet pipeline of the target part in the cooling system, and the third transparent pipeline 320 is used for observing air bubbles.
In this manner, the effect on flow and bubble content at the inlet of the target when the bubble content in the degassing test system 1 is different can be observed through the third transparent tubing 320.
The target components may be a water pump 5, an air-cooled radiator 3, a retarder cooler 11, an EGR cooler 9, and the like in the simulated cooling system, and may be set according to specific components in the simulated cooling system and the target components to be observed, which is not particularly limited in the embodiment of the present application.
Based on the same inventive concept, the embodiment of the application also provides a whole vehicle simulated cooling system, which comprises the degassing test system 1 in any embodiment. It should be noted that, since the vehicle simulated cooling system includes the degassing test system 1 in any of the above embodiments, the degassing test system 1 illustrated in some of the above embodiments has advantages, and the vehicle simulated cooling system also has advantages, which are not described herein.
The description of the whole vehicle simulated cooling system is carried out by taking a commercial vehicle with a retarder as an example in combination with the related drawings.
Fig. 5 shows a schematic structural diagram of a vehicle simulated cooling system according to an embodiment of the present application, and for convenience of explanation, only the matters related to the embodiment of the present application are shown.
In some embodiments, referring to fig. 5, the vehicle simulated cooling system further includes an expansion tank 2, an air-cooled radiator 3, a fan 4, a water pump 5, a cylinder 6, an engine oil cooler 7, a water diversion pipe 8, an EGR cooler 9, a urea nozzle cooler 10, a retarder cooler 11, a cylinder cover 12, an engine water outlet pipe 13, a thermostat 14, and a warm air radiator 15. It can be understood that the components included in the whole vehicle simulated cooling system are all components in the simulated actual whole vehicle cooling system.
Wherein, the export of water pump 5 communicates the import of oil cooler 7, and the export of oil cooler 7 is equipped with water diversion pipe 8, and the import of cylinder body 6 is linked to water diversion pipe 8, and the import of EGR cooler 9 is linked to another export, and the import of urea nozzle cooler 10 is linked to another export. The cylinder body 6 is provided with a cylinder cover 12, and the cylinder cover 12 is provided with an engine water outlet pipe 13. One outlet of the engine water outlet pipe 13 is communicated with an inlet of the warm air radiator 15, and the other outlet is communicated with the retarder cooler 11. The outlet of the retarder cooler 11, the outlet of the EGR cooler 9 and the outlet of the urea nozzle cooler 10 are each connected to one inlet of the thermostat 14. An outlet of the thermostat 14 is connected to an inlet of the water pump 5, and is connected to an outlet of the warm air radiator 15 in a pipe in which an outlet of the thermostat 14 is connected to an inlet of the water pump 5. The other outlet of the temperature regulator 14 is communicated with one inlet of the air-cooled radiator 3, and one outlet of the air-cooled radiator 3 is communicated with the other inlet of the water pump 5. The fan 4 is used for performing air-cooling heat dissipation on the air-cooled radiator 3.
The inlet of one of the two air inlet pipelines of the expansion tank 2 is communicated with one inlet of the thermostat 14, and the inlet of the other air inlet pipeline is communicated with the other outlet of the air-cooled radiator 3. The first air inlet testing device 100 in the air inlet testing system 1 is arranged on each air inlet pipeline. The water outlet pipeline of the expansion tank 2 is connected to the pipeline of the air-cooled radiator 3 connected with the water pump 5. The water outlet pipeline of the expansion tank 2 is provided with a degassing test device 200 in the degassing test system 1.
Alternatively, as shown in fig. 5, a second air intake testing device 300 may be provided on a pipeline of the air-cooled radiator 3 connected to the water pump 5 according to the test requirements. Of course, the inlet lines of the retarder cooler 11 and the EGR cooler 9 may also be provided with the second inlet air testing device 300. In this way, it is possible to facilitate monitoring of the cooling member in which bubbles are easily generated.
In the above arrangement, since the EGR cooler 9 is connected to one intake pipe of the expansion tank 2, which is provided with the first intake air testing device 100, gasification observation or bubble amount testing inside the EGR cooler 9 can be performed to test the gasification phenomenon inside the EGR cooler 9.
In the arrangement mode, the engine is directly operated to idle speed after being operated at a high rotating speed, the rapid deceleration water return of the whole vehicle can be simulated, the flow pressure change of each part in the system, the liquid level change in the expansion tank 2 and the water return condition are observed, and the water return resistance of the system and the expansion tank 2 can be evaluated.
Therefore, the components in the whole vehicle simulated cooling system can be arranged according to the actual whole vehicle cooling system according to the use requirement. It is understood that the above-mentioned arrangement of the vehicle cooling system is merely illustrative, and the vehicle cooling system includes but is not limited to the above-mentioned arrangement. The degassing system simulating the cooling system waterway of the whole vehicle can simulate the indexes such as water flow, pressure, water resistance and the like of each road of the whole vehicle by combination and control, can also test the indexes such as the filling rate, the first filling amount, the degassing time, the degassing rate, the water loss and the like of the whole vehicle, can quantitatively test the degassing effect of various working conditions, and evaluates the water return resistance of the system and the expansion tank 2. Meanwhile, the degassing capability of different expansion boxes 2 can be compared, and the expansion boxes 2 can be designed, developed and selected conveniently.
Fig. 6 shows a schematic diagram of the structure of the expansion tank testing system in an embodiment of the present application, and only the matters related to the embodiment of the present application are shown for convenience of explanation.
Based on the same inventive concept, referring to fig. 6, an embodiment of the present application further provides an expansion tank testing system, which includes an expansion tank 2 and the degassing testing system 1 in any of the above embodiments. The air inlet of the expansion tank 2 is communicated with the outlet of the first water outlet pipeline 113, and the water outlet of the expansion tank 2 is communicated with the inlet of the second water inlet pipeline 211. It should be noted that, since the expansion tank testing system includes the degassing testing system in any of the above embodiments, the degassing testing system illustrated in some of the above embodiments has advantages, and the expansion tank testing system also has advantages, which are not described herein.
In some embodiments, referring still to fig. 6, the expansion tank testing system further includes an air-cooled radiator 3, a fan 4, a water tank 16, and a water pump 5. The fan 4 is used for performing air-cooling heat dissipation on the air-cooled radiator 3. Wherein the expansion tank 2 has two air inlets, and the first air inlet test device 100 is provided with two. One first water inlet line 111 is connected between the expansion tank 2 and the air-cooled radiator 3, and the other first water inlet line 111 is connected between the water tank 16 and the expansion tank 2. The other outlet of the air-cooled radiator 3 and the outlet of the second water outlet pipeline 213 are both communicated with the inlet of the water pump 5, and the outlet of the water pump 5 is communicated with the water tank 16. The water tank 16 is also in communication with the air-cooled radiator 3 by means of a pipe, and a flow regulating valve 17 is provided on the pipe.
Thus, by adopting the test methods illustrated in some embodiments, the transverse comparison test of the degassing function of the expansion tank 2 can be performed, and the degassing effect of different expansion tanks 2 under the same working condition can be compared, so that the expansion tank 2 can be conveniently developed.
In summary, the bubble generator 120 of the present embodiment can add a certain amount of bubbles, and observe the state and change of the bubbles by the first transparent pipeline 112 and the second transparent pipeline 212. The inflow and return water flows can be tested by the first and second flow rate detecting members 130 and 220. Therefore, the degassing rate can be tested and the degassing qualitative evaluation can be performed by controlling the quantity of the added bubbles, observing the states and changes of the bubbles at the upstream and downstream of the expansion tank 2 and acquiring the relation between the water inflow and the water return flow, so that the cooling system of the whole vehicle can be conveniently tested, and the expansion tank 2 can be conveniently developed. Meanwhile, on the basis of the quantitative and qualitative test results, the first air inlet test device 100 and the degassing test device 200 can be assembled and installed in an actual whole vehicle to perform actual test, and at the moment, the actual whole vehicle is tested only by testing qualitative indexes, so that the method is simpler and more convenient. In this process, the degassing test apparatus 200 can measure the flow rate of each phase in the gas-liquid two-phase flow without separating the gas-liquid two-phase flow. By providing a more flexible second inlet air testing device 300, it is facilitated to test components that need to be bubble tested, such as the water pump 5, the EGR cooler 9, the retarder cooler 11, etc. In the process, the components in the corresponding system can be increased or decreased according to the vehicle type and the test requirement, and the actual states of different vehicles or requirements are simulated for testing. In addition, the expansion tank test system can be formed by the degassing test system 1, and can be independently combined into an engine subsystem, an external part subsystem and the like according to test requirements to carry out flexible butt joint of different tests.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. A degassing test system for a cooling system of a vehicle, the degassing test system comprising:
The first air inlet testing device comprises an air inlet testing pipeline, a bubble generator and a first flow detecting piece, wherein the air inlet testing pipeline comprises a first water inlet pipeline, a first transparent pipeline and a first water outlet pipeline which are sequentially connected along the water inlet direction, an outlet of the first water outlet pipeline is used for being communicated with an air inlet of an expansion tank, the bubble generator is connected with the first water inlet pipeline, the connecting position is positioned on the upstream side of the first water inlet pipeline and close to the first transparent pipeline and used for quantitatively adding bubbles into the first water inlet pipeline, the first flow detecting piece is arranged at the inlet end of the first water outlet pipeline and used for detecting the water inlet flow flowing through the first water outlet pipeline, and
A degassing test apparatus comprising:
the degassing test pipeline comprises a second water inlet pipeline, a second transparent pipeline and a second water outlet pipeline which are sequentially connected along the water outlet direction, and an inlet of the second water inlet pipeline is used for communicating a water outlet of the expansion tank;
the second flow detection piece is arranged at the outlet end of the second water outlet pipeline and is used for detecting the backwater flow flowing through the second water outlet pipeline;
One end of the first water collecting pipeline is connected with the second water inlet pipeline, and the other end of the first water collecting pipeline is connected with the second water outlet pipeline;
The first water collecting container is arranged on the first water collecting pipeline;
the first control piece is arranged on the second water inlet pipeline and is used for controllably switching on or off the second transparent pipeline;
the second control piece is arranged on the first water collecting pipeline and is used for controllably switching on or switching off the first water collecting pipeline;
The second water collecting pipeline is connected with one end of the second water collecting pipeline;
A second water collecting container for collecting the fluid flowing out from the other end of the second water collecting pipeline, and
The third control piece is arranged on the second water collecting pipeline and is used for controllably switching on or off the second water collecting pipeline;
The degassing test system is configured to test the degassing rate of the expansion tank and perform qualitative evaluation of degassing by means of quantitative evaluation by controlling the amount of bubbles quantitatively added by the bubble generator, observing the state and change of bubbles upstream and downstream of the expansion tank by means of the first transparent pipeline and the second transparent pipeline, and the relationship between the inflow water flow and the return water flow acquired by the first flow detecting member and the second flow detecting member;
The degassing test device is provided with a working mode for testing the water loss of the expansion tank; the degassing test device is in the working mode for testing the water loss of the expansion tank, the cooling liquid in the expansion tank is controlled at the lower liquid level, after the set working condition is stable in operation, the first control piece and the third control piece are opened, the second control piece is closed, backwater is discharged into the second water collecting container, the water discharge amount discharged into the second water collecting container is monitored through the weighing device, and meanwhile, the change of bubbles in the second transparent pipeline is monitored;
the degassing test device further comprises two third pressure detection pieces, wherein the two third pressure detection pieces are arranged on the second water outlet pipeline and are arranged on the upstream and downstream of one end of the second water collecting pipeline connected with the second water outlet pipeline, and under the water loss test of the expansion tank, the influence on the water loss under different pressure states is monitored by monitoring the pressure of the upstream and downstream of one end of the second water collecting pipeline connected with the second water outlet pipeline, so that qualitative evaluation of the water loss is performed.
2. The degassing test system of claim 1 wherein the first water collection line comprises:
the first water collecting main way is provided with the first water collecting container;
a first connecting pipe, one end of which is connected with the second water inlet pipe and the other end of which is detachably connected with one end of the first water collecting main pipe, and
One end of the second connecting pipeline is connected with the second water outlet pipeline, and the other end of the second connecting pipeline is detachably connected with the other end of the first water collecting main pipeline;
The second control piece is arranged on the first connecting pipeline, the second connecting pipeline, between one end of the first water collecting main pipeline and one end of the first water collecting container, and between the other end of the first water collecting main pipeline and the other end of the first water collecting container.
3. The degassing test system of claim 2 wherein the first water collection line further comprises a first quick connect fitting;
the first connecting pipeline and the second connecting pipeline are detachably connected with the first water collecting main pipeline respectively by means of the first quick connector.
4. The degassing test system of claim 1 wherein the degassing test apparatus further comprises a first pressure detection member and a second pressure detection member;
the first pressure detection piece is arranged on the second water inlet pipeline and is used for detecting the fluid pressure before the fluid enters the second transparent pipeline;
the second pressure detection piece is arranged on the second water outlet pipeline and is used for detecting the pressure of the fluid flowing out of the second transparent pipeline.
5. The degassing test system of claim 1 wherein the first control member is disposed both upstream and downstream of the second transparent conduit.
6. The degassing test system of claim 1 wherein the second water collection line comprises:
A second water collecting main path, the second water collecting container is used for collecting the fluid flowing out from one end of the second water collecting main path, and
One end of the third connecting pipeline is connected with the second water outlet pipeline, and the other end of the third connecting pipeline is detachably connected with the other end of the second water collecting main pipeline;
Wherein the third control piece is arranged on the second water collecting main way and/or the third connecting pipeline.
7. The degassing test system of claim 6 wherein the second water collection line further comprises a second quick connect fitting;
the third connecting pipeline is detachably connected with the second water collecting main pipeline by means of the second quick connector.
8. The degassing test system of any one of claims 1-7, further comprising a second intake test device;
the second air inlet testing device comprises a third water inlet pipeline, a third transparent pipeline and a third water outlet pipeline which are sequentially connected along the water inlet direction;
wherein the second air inlet testing device is arranged on a water inlet pipeline of a target piece in the cooling system, and the third transparent pipeline is used for observing bubbles.
9. An expansion tank testing system comprising an expansion tank and a degassing testing system according to any of claims 1-8;
The air inlet of the expansion tank is communicated with the outlet of the first water outlet pipeline, and the water outlet of the expansion tank is communicated with the inlet of the second water inlet pipeline.
10. A vehicle simulated cooling system comprising a degassing test system as claimed in any one of claims 1-8.
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