CN210981787U - Automatic liquid supplementing and recycling system for engine coolant for bench test - Google Patents
Automatic liquid supplementing and recycling system for engine coolant for bench test Download PDFInfo
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- CN210981787U CN210981787U CN201921637598.XU CN201921637598U CN210981787U CN 210981787 U CN210981787 U CN 210981787U CN 201921637598 U CN201921637598 U CN 201921637598U CN 210981787 U CN210981787 U CN 210981787U
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Abstract
The utility model discloses an automatic liquid supplementing and recovering system for engine coolant for bench test, which is mainly provided with a liquid supplementing device, a recovering device and a control device, wherein the liquid supplementing device is provided with a liquid level detection device in an expansion water tank to judge whether liquid supplementing is needed; after the recovery device is tested, the human-computer interaction unit inputs a recovery signal to enable the control device to close the water outlet pipe control valve, open the liquid return control valve and the compressed gas control switch to enable compressed air to blow in, purge cooling liquid in the engine, enable the cooling liquid to be recovered into the liquid storage tank, and judge whether the recovery of the cooling liquid in the engine is finished through the liquid detection device. It is thus clear that the utility model discloses an automatic fluid infusion function in the experimentation has realized the recovery of experimental back coolant liquid that finishes, has practiced thrift the resource.
Description
Technical Field
The utility model relates to a vehicle testing technical field especially relates to a system of automatic fluid infusion of engine coolant liquid and recovery for bench test.
Background
The engine is subjected to a bench development test, and the running engine needs to be cooled by cooling liquid in real time. When the total amount of cooling liquid is reduced due to high temperature and the like in the running process of the engine, and the liquid level is lower than the limit value, the engine must be stopped for liquid supplement, and the test efficiency of the engine is influenced. After the engine test is finished, the current method for treating the cooling liquid is to directly discharge the cooling liquid in the engine to a sewer, but the cooling liquid can still be continuously used if being recovered, so that the resource waste is caused.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough, the utility model discloses the technical problem that will solve is: the automatic liquid supplementing and recycling system for the engine coolant for the bench test is provided, so that the automatic liquid supplementing of the coolant in the test process is realized, the recycling of the coolant after the test is finished is realized, and the resource is recycled.
In order to solve the technical problem, the technical scheme of the utility model is that:
the utility model provides a system for automatic fluid infusion of engine coolant liquid and recovery is used in bench test, be provided with coolant liquid inlet tube and coolant liquid outlet pipe on the engine respectively, coolant liquid inlet tube and expansion tank intercommunication, be provided with the outlet pipe control valve on the coolant liquid outlet pipe, the system includes: a liquid storage tank for storing cooling liquid; the liquid supplementing device comprises a liquid supplementing pipe, a liquid supplementing control valve arranged on the liquid supplementing pipe and a liquid level detection device used for detecting the liquid level of the expansion water tank, and the liquid supplementing pipe is communicated with the liquid storage tank and the expansion water tank; the liquid return device comprises a recovery pipe, a liquid return control valve arranged on the recovery pipe, a liquid detection device arranged on the recovery pipe, a compressed air inlet pipe communicated with the cooling liquid outlet pipe and a compressed air control switch arranged on the compressed air inlet pipe, wherein the recovery pipe is communicated with the cooling liquid outlet pipe and the liquid storage tank; the control device comprises a human-computer interaction unit for inputting a recovery electric signal, and is respectively and electrically connected with the water outlet pipe control valve, the liquid supplementing control valve, the liquid level detection device, the liquid return control valve, the liquid detection device and the compressed gas control switch; the control device controls the liquid supplementing control valve to realize automatic liquid supplementing according to the electric signal transmitted by the liquid level detection device; and the control device controls the water outlet pipe control valve, the liquid return control valve and the compressed gas control switch to realize recovery according to the electric signals transmitted by the human-computer interaction unit and the liquid detection device.
Preferably, the liquid level detection device comprises an upper liquid detection electrode and a lower liquid detection electrode which are arranged up and down, a metal conductive bar and a floating ball for fixing the metal conductive bar; the upper liquid detection electrode and the lower liquid detection electrode are respectively arranged on the inner wall of the expansion water tank; the floating ball is arranged in the expansion water tank; go up liquid detection electrode with lower liquid detection electrode respectively with controlling means electricity is connected, the metal conducting bar through the contact realize with go up switching on of liquid detection electrode, the metal conducting bar pass through the coolant liquid realize with switching on of lower liquid detection electrode.
Preferably, the liquid level detection device comprises two upper liquid detection electrodes which are oppositely arranged, one end of each upper liquid detection electrode is fixed on the inner wall of the expansion water tank, the other end of each upper liquid detection electrode extends into the expansion water tank, and the distance between the two upper liquid detection electrodes is matched with the length of the metal conductive bar.
Preferably, the liquid level detection device comprises two lower liquid detection electrodes which are arranged oppositely, and each lower liquid detection electrode is embedded on the inner wall of the expansion water tank.
Preferably, the end part of each upper liquid detection electrode extending into the expansion water tank is wedge-shaped; the end parts of the metal conducting strips are in inverted wedge shapes.
Preferably, the liquid detection device comprises a shell arranged on the recovery pipe and two liquid sensing electrodes arranged in the shell at intervals, and one ends of the two liquid sensing electrodes extend into the recovery pipe and are respectively electrically connected with the control device.
Preferably, the control device comprises a microprocessor and a reset circuit which are electrically connected.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
the utility model discloses a system for automatic fluid infusion and recovery of engine coolant for bench test mainly has set up fluid infusion device, recovery unit and controlling means, wherein fluid infusion device sets up the liquid level detection device in expansion tank, judges whether need fluid infusion, when needing fluid infusion, controlling means control fluid infusion control valve opens, make the coolant liquid in the liquid storage tank mend expansion tank, mend in the engine again; after the test of the recovery device is finished, the human-computer interaction unit inputs a recovery electric signal, the control device closes the water outlet pipe control valve on the cooling liquid water outlet pipe, and then opens the liquid return control valve and the compressed air control switch, so that compressed air is blown in through the compressed air inlet pipe, cooling liquid in the engine is blown in the recovery pipe and finally recovered into the liquid storage tank, and whether the recovery of the cooling liquid in the engine is finished or not is judged through the liquid detection device. It can be seen that, the utility model discloses an automatic fluid infusion function among the engine test process has realized the recovery of coolant liquid simultaneously after experimental the end, has practiced thrift the resource, just the utility model discloses easily realize, it is with low costs.
Because liquid level detection device includes two relative last liquid detection electrode that set up, each one end of going up liquid detection electrode is fixed on expansion tank inner wall, and each other end of going up liquid detection electrode stretches into expansion tank in, and the distance between two last liquid detection electrodes and the length looks adaptation of metal conducting strip, and this structure makes when the liquid level in expansion tank reachs the upper limit, and the metal conducting strip switches on with the contact of two last liquid detection electrode.
Because the liquid level detection device includes two lower liquid detection electrodes that set up relatively, each lower liquid detection electrode all inlays and establishes on expansion tank inner wall, and this structure makes when the liquid level is low to the lower limit in the expansion tank, does not have liquid, makes metal conducting strip and lower liquid detection electrode disconnection.
The end part of each upper liquid detection electrode extending into the expansion water tank is wedge-shaped; the end part of the metal conductive bar is in an inverted wedge shape; conduction is achieved by contact.
Because the liquid detection device comprises a shell arranged on the recovery pipe and two liquid sensing electrodes arranged in the shell at intervals, one ends of the two liquid sensing electrodes extend into the recovery pipe and are respectively and electrically connected with the control device; when the structure has cooling liquid in the recovery pipe, the two liquid sensing electrodes are conducted, and when the structure does not have the cooling liquid, the two liquid sensing electrodes are disconnected, so that whether the cooling liquid exists in the recovery pipe or not is detected.
Because the control device comprises a microprocessor and a reset circuit which are electrically connected, the reset circuit can directly reset when the system is reused after the cooling liquid is recovered.
Because whether the electric signal that judges liquid detection device collection is the preset value, specifically do: and judging whether the electric signal acquired by the liquid detection device is continuously a preset value within the time t, so as to avoid misoperation.
Drawings
FIG. 1 is a schematic structural diagram of a system for automatically replenishing and recovering engine coolant for a bench test;
fig. 2 is a schematic structural view of a liquid detection apparatus according to the present invention;
FIG. 3 is a schematic structural view of a liquid detecting device according to the present invention;
in the figure: 1-an engine, 2-a liquid storage tank, 3-an expansion water tank, 5-a control device, 6-a liquid supplementing pipe, 7-a recovery pipe, 8-a liquid supplementing control valve, 9-a liquid level detection device, 90-a floating ball, 91-a metal conducting strip, 92-an upper liquid detection electrode, 93-a lower liquid detection electrode, 10-a cooling liquid outlet pipe, 11-a compressed air inlet pipe, 12-a water outlet pipe control valve, 13-a liquid detection device, 130-a liquid sensing electrode, 131-a shell, 14-a liquid returning control valve, 15-a compressed air control switch, 16-a heat exchanger and 17-a connecting pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 3, in an automatic liquid supplementing and recycling system for engine coolant for bench tests, a coolant inlet pipe and a coolant outlet pipe 10 are respectively arranged on an engine 1, the coolant inlet pipe is communicated with an expansion water tank 3, a water outlet pipe control valve 12 is arranged on the coolant outlet pipe 10, the coolant inlet pipe and the coolant outlet pipe 10 are respectively communicated with a heat exchanger 16, and the heat exchanger 16 is externally connected with a coolant return pipe and a coolant inlet pipe.
The system of the utility model comprises a liquid storage tank 2 for storing cooling liquid, a liquid supplementing device, a recovery device and a control device 5; the liquid supplementing device comprises a liquid supplementing pipe 6, a liquid supplementing control valve 8 arranged on the liquid supplementing pipe 6 and a liquid level detection device 9 used for detecting the liquid level of the expansion water tank 3, the liquid supplementing pipe 6 is communicated with the liquid storage tank 2 and the expansion water tank 3, and the expansion water tank 3 is communicated with the engine through a connecting pipe 17; the liquid return device comprises a recovery pipe 7, a liquid return control valve 14 arranged on the recovery pipe 7, a liquid detection device 13 arranged on the recovery pipe 7, a compressed air inlet pipe 11 communicated with a cooling liquid outlet pipe 10 and a compressed air control switch 15 arranged on the compressed air inlet pipe 11, wherein the recovery pipe 7 is communicated with the cooling liquid outlet pipe 10 and the liquid storage tank 2; the control device 5 comprises a human-computer interaction unit for inputting a recovery electric signal, the control device 5 is respectively electrically connected with the water outlet pipe control valve 12, the liquid supplementing control valve 8, the liquid level detection device 9, the liquid returning control valve 14, the liquid detection device 13 and the compressed air control switch 15, the control device 5 in the embodiment comprises a microprocessor, the microprocessor is preferably a single chip microcomputer, and an SMT32F10 series single chip microcomputer can be used. The control device 5 controls the liquid supplementing control valve 8 to realize automatic liquid supplementing according to the electric signal transmitted by the liquid level detection device 9; the control device 5 controls the water outlet pipe control valve 12, the liquid return control valve 14 and the compressed gas control switch 15 to realize recovery according to the electric signals transmitted by the man-machine interaction unit and the liquid detection device 13.
The utility model discloses a system of automatic fluid infusion of engine cooling liquid and recovery for bench test carries out experimental in-process at engine 1, and liquid level detection device 9 detects the liquid level in expansion tank 3, when the liquid level reachs the lower limit, shows that expansion tank 3 is interior to need the fluid infusion, and controlling means 5 controls fluid infusion control valve 8 and opens this moment, makes 2 internal cooling liquid of liquid storage pot get into expansion tank 3 through fluid infusion pipe 6 in, mend again in engine 1. When the liquid level detection device 9 detects that the liquid level in the expansion water tank 3 reaches the upper limit, the liquid supplementing control valve 8 is closed to stop liquid supplementing. After the engine 1 test is finished, the human-computer interaction unit inputs a recovery electric signal, the control device 5 closes the water outlet pipe control valve 12 to prevent the cooling liquid from entering the heat exchanger 16, the compressed air control switch 15 and the liquid return control valve 14 are opened to enable compressed air to be blown into the engine 1 through the compressed air inlet pipe 11 to blow out the residual cooling liquid in the engine 1, and the residual cooling liquid enters the recovery pipe 7 from the cooling liquid outlet pipe 10 and flows through the liquid detection device 13 to be finally recovered into the liquid storage tank 2. When the cooling liquid flows through the liquid detection device 13, the liquid detection device 13 outputs a corresponding electric signal to the control device 5 for continuous recovery, after the cooling liquid recovery is finished, when no liquid flows through the liquid detection device 13, the liquid detection device 13 transmits a corresponding electric signal to the control device 5, the control device 5 closes the compressed air control switch 15 and the liquid return control valve 14, and simultaneously opens the water outlet pipe control valve 12, so that the cooling liquid recovery is finished. It can be seen that the utility model discloses a system had both realized the automatic supply of test process coolant liquid, had realized the recovery of experimental end back coolant liquid again, and resource recycling recycles, and simple structure, and easy the realization, and is with low costs.
As shown in fig. 2, the liquid level detection device 9 includes an upper liquid detection electrode 92 and a lower liquid detection electrode 93 disposed above and below, a metal conductive bar 91, and a floating ball 90 for fixing the metal conductive bar 91; the upper liquid detection electrode 92 and the lower liquid detection electrode 93 are respectively arranged on the inner wall of the expansion water tank 3; the floating ball 90 is arranged in the expansion water tank 3; go up liquid detection electrode 92 and lower liquid detection electrode 93 and be connected with controlling means 5 electricity respectively, metal conducting bar 91 realizes switching on with last liquid detection electrode 92 through the contact, and metal conducting bar 91 realizes switching on with lower liquid detection electrode 93 through the coolant liquid. In this embodiment: the liquid level detection device 9 includes two upper liquid detection electrodes 92 arranged oppositely, one end of each upper liquid detection electrode 92 is fixed on the inner wall of the expansion tank 3, the other end of each upper liquid detection electrode 92 extends into the expansion tank 3, and the distance between the two upper liquid detection electrodes 92 is matched with the length of the metal conductive strip 91, so as to realize contact conduction. Furthermore, the end of each upper liquid detection electrode 92 extending into the expansion water tank 3 is wedge-shaped; the ends of the conductive metal strips 91 are inverted wedges to accommodate liquid flotation for more reliable contact.
In this embodiment, the liquid level detection device 9 includes two lower liquid detection electrodes 93 disposed opposite to each other, and each lower liquid detection electrode 93 is embedded in the inner wall of the expansion tank 3, and this structure ensures that the liquid level is lower than the lower limit, and no coolant makes the lower liquid detection electrode 93 output a low level.
The working principle of the liquid level detection device 9 of the embodiment is as follows:
when the expansion water tank 3 works, if the liquid level of the expansion water tank 3 reaches the upper limit, under the action of buoyancy, the insulating floating ball 90 carries the metal conductive bar 91 to be in contact with the two upper liquid level detection electrodes to realize conduction, a loop is formed to indicate that the cooling liquid is sufficient, and the two upper liquid level detection motors transmit high level to the control device 5; if expansion tank 3 leads to the liquid level to continuously reduce because of giving 1 fluid infusion of engine, when the liquid level reduces to the liquid level lower limit, when liquid level detection electrode is below promptly, because there is not the coolant liquid to switch on metal conducting bar 91 and liquid level detection electrode down, make liquid level detection electrode give controlling means 5 because of the output low level that opens a circuit down, controlling means 5 control fluid infusion control valve 8 opens this moment, make the coolant liquid in the liquid storage pot 2 mend into expansion tank 3 through fluid infusion pipe 6 in, when the interior liquid level of liquid storage tank reaches the upper limit, controlling means 5 closes fluid infusion control valve 8 again and stops the fluid infusion. It is visible, the utility model discloses by the liquid level signal of telecommunication of controlling means 5 according to liquid level detection device 9 collection, the automatic control fluid infusion makes 1 experimental going on in succession of engine, has improved test efficiency.
As shown in fig. 3, the liquid detection device 13 includes a casing 131 disposed on the recovery pipe 7, and two liquid sensing electrodes 130 disposed in the casing 131 at intervals, wherein one ends of the two liquid sensing electrodes 130 extend into the recovery pipe 7 and are electrically connected to the control device 5, respectively. In this embodiment, the liquid detection device 13 and the compressed air inlet pipe 11 are separately provided on both sides of the liquid return control valve 14, and the compressed air inlet pipe 11 is provided near the engine 1 side. The liquid detection device 13 is sleeved outside the recovery pipe 7, and the other ends of the two liquid sensing electrodes 130 are respectively electrically connected with the control device 5.
The working principle of the liquid detection device is as follows:
during operation, if cooling liquid flows in the recovery pipe 7, when the cooling liquid flows through the two liquid sensing electrodes 130, the cooling liquid conducts the two liquid sensing electrodes 130 to form a loop, the two liquid sensing electrodes 130 transmit a high level to the control device 5, at this time, compressed air is blown in all the time, the cooling liquid in the engine 1 is continuously blown, if no cooling liquid passes through the two liquid sensing electrodes 130 in the recovery pipe 7, the loop cannot be formed, after lasting t time, when it is detected that the loop is not formed in the liquid detection device 13, the two liquid sensing electrodes 130 transmit a low level to the control device 5, the control device 5 considers that the cooling liquid is blown completely, the control device 5 closes the compressed air control switch 15 and the liquid return control valve 14, and simultaneously opens the water outlet pipe control valve 12, and the cooling liquid recovery is completed.
In this embodiment, the control device 5 includes a microprocessor and a reset circuit electrically connected to each other, and when a test is required to be performed again, the reset circuit can trigger reset, and the fluid infusion device can still automatically infuse fluid. This reset circuit is prior art and will not be described again in detail.
The man-machine interaction unit comprises: the wireless remote control comprises a recovery button electrically connected with the microprocessor, a touch screen electrically connected with the microprocessor, a voice control unit electrically connected with the microprocessor, or a wireless remote controller electrically connected with the microprocessor, wherein the voice control unit comprises a pickup sensor and a voice recognition circuit, the wireless remote controller comprises a wireless communication circuit, and the corresponding control device 5 comprises a wireless communication circuit electrically connected with the microprocessor. Of course, the man-machine interaction unit is not limited to the above list. In addition, the liquid level in the expansion tank 3 and the liquid flowing condition in the recovery pipe 7 can be displayed by utilizing a touch screen.
To sum up, the utility model discloses a system makes two return circuits have between liquid storage pot 2 and the engine 1 through setting up moisturizing pipe 6 and recovery tube 7 to control the control valve on each return circuit through controlling means 5, realize the moisturizing and retrieve, with the help of liquid level detection device 9 and liquid detection device 13 simultaneously, carries out automatic control with retrieving the fluid infusion, has both improved test efficiency, has realized resource recovery again and has recycled.
The above-mentioned preferred embodiments of the present invention are not intended to limit the present invention, and any modifications made within the spirit and principles of the present invention, such as the improvement of the system and method for automatically replenishing and recycling the engine coolant for the bench test, should be included within the scope of the present invention.
Claims (7)
1. The automatic liquid supplementing and recycling system for the engine coolant for the bench test is characterized in that a coolant inlet pipe and a coolant outlet pipe are respectively arranged on the engine, the coolant inlet pipe is communicated with an expansion water tank, and a water outlet pipe control valve is arranged on the coolant outlet pipe, and the system comprises:
a liquid storage tank for storing cooling liquid;
the liquid supplementing device comprises a liquid supplementing pipe, a liquid supplementing control valve arranged on the liquid supplementing pipe and a liquid level detection device used for detecting the liquid level of the expansion water tank, and the liquid supplementing pipe is communicated with the liquid storage tank and the expansion water tank;
the liquid return device comprises a recovery pipe, a liquid return control valve arranged on the recovery pipe, a liquid detection device arranged on the recovery pipe, a compressed air inlet pipe communicated with the cooling liquid outlet pipe and a compressed air control switch arranged on the compressed air inlet pipe, wherein the recovery pipe is communicated with the cooling liquid outlet pipe and the liquid storage tank;
the control device comprises a human-computer interaction unit for inputting a recovery electric signal, and is respectively and electrically connected with the water outlet pipe control valve, the liquid supplementing control valve, the liquid level detection device, the liquid return control valve, the liquid detection device and the compressed gas control switch; the control device is used for controlling the liquid supplementing control valve to realize automatic liquid supplementing according to the electric signal transmitted by the liquid level detection device; the control device is used for controlling the water outlet pipe control valve, the liquid return control valve and the compressed gas control switch to realize recovery according to electric signals transmitted by the human-computer interaction unit and the liquid detection device.
2. The automatic liquid supplementing and recovering system for the engine coolant used for the bench test according to claim 1, wherein the liquid level detecting device comprises an upper liquid detecting electrode and a lower liquid detecting electrode which are arranged up and down, a metal conductive bar and a floating ball for fixing the metal conductive bar;
the upper liquid detection electrode and the lower liquid detection electrode are respectively arranged on the inner wall of the expansion water tank;
the floating ball is arranged in the expansion water tank;
go up liquid detection electrode with lower liquid detection electrode respectively with controlling means electricity is connected, the metal conducting bar through the contact realize with go up switching on of liquid detection electrode, the metal conducting bar pass through the coolant liquid realize with switching on of lower liquid detection electrode.
3. The system for automatically replenishing and recovering engine coolant for bench tests as claimed in claim 2, wherein said liquid level detection means comprises two upper liquid detection electrodes disposed opposite to each other, one end of each of said upper liquid detection electrodes is fixed to the inner wall of said expansion tank, the other end of each of said upper liquid detection electrodes extends into said expansion tank, and the distance between said two upper liquid detection electrodes is adapted to the length of said metal conductive strip.
4. The system for automatically replenishing and recovering the engine coolant for the bench test as set forth in claim 2, wherein said liquid level detection means comprises two lower liquid detection electrodes disposed opposite to each other, each of said lower liquid detection electrodes being embedded in the inner wall of said expansion tank.
5. The automatic fluid infusion and recovery system for engine coolant used for bench tests according to claim 3,
the end part of each upper liquid detection electrode extending into the expansion water tank is wedge-shaped;
the end parts of the metal conducting strips are in inverted wedge shapes.
6. The automatic engine coolant replenishing and recycling system for bench tests according to any one of claims 1 to 5, wherein the liquid detection device comprises a housing disposed on the recycling pipe, and two liquid sensing electrodes disposed in the housing at intervals, and one ends of the two liquid sensing electrodes extend into the recycling pipe and are electrically connected to the control device, respectively.
7. The system for automatically replenishing and recovering engine coolant for a bench test according to claim 6, wherein the control device comprises a microprocessor and a reset circuit which are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921637598.XU CN210981787U (en) | 2019-09-28 | 2019-09-28 | Automatic liquid supplementing and recycling system for engine coolant for bench test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921637598.XU CN210981787U (en) | 2019-09-28 | 2019-09-28 | Automatic liquid supplementing and recycling system for engine coolant for bench test |
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| CN210981787U true CN210981787U (en) | 2020-07-10 |
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| CN201921637598.XU Active CN210981787U (en) | 2019-09-28 | 2019-09-28 | Automatic liquid supplementing and recycling system for engine coolant for bench test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530644A (en) * | 2019-09-28 | 2019-12-03 | 潍柴西港新能源动力有限公司 | The system and method for bench test engine coolant automatic liquid supply and recycling |
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2019
- 2019-09-28 CN CN201921637598.XU patent/CN210981787U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530644A (en) * | 2019-09-28 | 2019-12-03 | 潍柴西港新能源动力有限公司 | The system and method for bench test engine coolant automatic liquid supply and recycling |
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