CN213397525U - Liquid leakage detection alarm device and power equipment test bench base equipped with same - Google Patents
Liquid leakage detection alarm device and power equipment test bench base equipped with same Download PDFInfo
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- CN213397525U CN213397525U CN202022691564.8U CN202022691564U CN213397525U CN 213397525 U CN213397525 U CN 213397525U CN 202022691564 U CN202022691564 U CN 202022691564U CN 213397525 U CN213397525 U CN 213397525U
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Abstract
The application discloses a power equipment test bench base and a liquid leakage detection alarm device thereof, wherein the power equipment test bench base comprises a substrate, the substrate comprises an upper surface and a lower surface opposite to the upper surface, and after the power equipment test bench base is installed in place, the upper surface of the substrate is provided with a lowest position along the gravity direction; the power equipment test bench base further comprises a liquid leakage detection alarm device located on one side of the lower surface, wherein the liquid leakage detection alarm device comprises a tuning fork type liquid level sensor, an electromagnetic valve and a communicating component located between the tuning fork type liquid level sensor and the electromagnetic valve, a channel is formed in the communicating component and is connected with the tuning fork type liquid level sensor and the electromagnetic valve respectively, the communicating component is connected to the base plate at a position corresponding to the lowest position, the channel is communicated with the upper surface of the base plate, the liquid leakage detection alarm device further comprises a central control unit electrically connected with the tuning fork type liquid level sensor and the electromagnetic valve respectively, and an alarm device electrically connected with the central control unit.
Description
Technical Field
The present application relates generally to the field of power equipment testing, and more particularly to a leak warning device for liquids, such as fuel, lubricating oil, antifreeze, etc., in power equipment tested on a power equipment test rig.
Background
In the development and manufacturing process of automotive power equipment such as an engine, the engine needs to be subjected to a rigorous test as a test sample arranged on a test bench to evaluate whether it can meet various index requirements. During testing, liquids contained within the engine, such as fuel, lubricating oil, antifreeze, etc., may leak due to failure of components of the engine itself or poor sealing. Typically, if such a liquid leak occurs over a long period of time, the engine's own oil detection system will sound an alarm. However, at this time, a large amount of liquid has leaked out of the engine and, in turn, may affect the accuracy of the test of the associated test instruments on the test bench.
Therefore, it is necessary to find the liquid leakage in time. Currently, it is common to find out whether there is a leak in the engine on site by visual inspection by a technician or by manually monitoring the test specimen by providing a monitoring camera. However, due to the special outer shape of the engine, there are many visual monitoring dead corners, and the liquid leakage cannot be found in time. Often, after an oil detection system of an engine gives an alarm, the leakage amount of liquid is large.
SUMMERY OF THE UTILITY MODEL
The object of the present application is to propose a novel liquid leak detection alarm device for testing a motor vehicle power plant, so that a liquid leak from the power plant can be detected relatively quickly.
According to one aspect of the present application, there is provided a power equipment test rack base comprising a base plate comprising an upper surface and a lower surface opposite the upper surface,
after the power equipment test bench base is installed in place, the upper surface of the base plate has a lowest position along the direction of gravity;
the power equipment test bench base further comprises a liquid leakage detection alarm device positioned on one side of the lower surface, wherein the liquid leakage detection alarm device comprises a tuning fork type liquid level sensor, an electromagnetic valve and a communication component positioned between the tuning fork type liquid level sensor and the electromagnetic valve, a channel is formed in the communication component and is respectively connected with the tuning fork type liquid level sensor and the electromagnetic valve, the communication component is connected to the base plate at a position corresponding to the lowest position and is communicated with the upper surface of the base plate,
the liquid leakage detection alarm device also comprises a central control unit and an alarm device, wherein the central control unit is respectively and electrically connected with the tuning fork type liquid level sensor and the electromagnetic valve, and the alarm device is electrically connected with the central control unit.
Optionally, the communication member comprises a first section and a second section extending laterally from the first section, the second section being proximal to the lower surface of the base plate, the first section being distal to the lower surface of the base plate.
Optionally, the channel is formed in the first section and the second section.
Optionally, the tuning fork level sensor and the solenoid valve are located at opposite ends of the first section of the communicating member, respectively.
Optionally, the upper surface of the base plate has at least three slopes to define the lowermost position.
Optionally, the tuning fork level sensor comprises a tuning fork contact projecting into the channel, and the solenoid valve is a normally closed solenoid valve to block the channel.
Optionally, the first section of the communicating member is arranged horizontally after the power equipment test rig is in place.
Optionally, the central control unit generates an alarm signal to activate the alarm device and/or a stop signal to stop engine detection upon receiving an electrical measurement signal generated by the tuning fork level sensor indicating the presence of liquid within the channel.
Optionally, the central control unit generates an electrical signal for opening the solenoid valve at the same time as or after a predetermined time as the generation of the alarm signal and/or the shutdown signal.
Optionally, the power plant is a motor vehicle power plant comprising an internal combustion engine and/or an electric machine and/or a transmission connected to the internal combustion engine or the electric machine.
According to another aspect of the present application, there is also provided a liquid leak detection alarm device of a power equipment test stand base, the power equipment test stand base including a base plate including an upper surface and a lower surface opposite to the upper surface, the liquid leak detection alarm device including:
a tuning fork type liquid level sensor, an electromagnetic valve and a communicating component positioned between the tuning fork type liquid level sensor and the electromagnetic valve, wherein a channel is formed in the communicating component so as to be respectively connected with the tuning fork type liquid level sensor and the electromagnetic valve,
after the power equipment test bench base is installed in place, the upper surface of the base plate has a lowest position along the direction of gravity;
the liquid leakage detection alarm device is located on the lower surface side, the communication member is connected to the substrate at a position corresponding to the lowest position, and the passage communicates with the upper surface of the substrate,
the liquid leakage detection alarm device also comprises a central control unit and an alarm device, wherein the central control unit is respectively and electrically connected with the tuning fork type liquid level sensor and the electromagnetic valve, and the alarm device is electrically connected with the central control unit.
According to the technical means of the application, when power equipment such as an engine detects on the test bench, if the engine leaks liquid, the liquid leakage can be found rapidly and automatically, manual monitoring is avoided, the test detection efficiency is improved, and the influence of excessive liquid leakage on the engine test result can be prevented.
Drawings
The principles and aspects of the present application will be more fully understood from the following detailed description, taken in conjunction with the accompanying drawings. It is noted that the drawings may not be to scale for clarity of illustration and will not detract from the understanding of the present application. In the drawings:
FIG. 1 schematically illustrates a side view of an engine test rig, wherein the engine test rig shows a portion equipped with a liquid leak detection alarm device according to the present application;
FIG. 2 schematically illustrates a top view of the engine test rig of FIG. 1;
FIG. 3 schematically illustrates an enlarged side view of a liquid leak detection device according to an example of the present application; and is
Fig. 4 schematically shows a flowchart of one example of an operation method of the liquid leakage detecting apparatus of the present application.
Detailed Description
In the various figures of the present application, features that are structurally identical or functionally similar are denoted by the same reference numerals.
Fig. 1 schematically illustrates a power equipment test stand base 100. The engine is not shown in the figure. However, it should be clear to one skilled in the art that the motor may be disposed on the power equipment test stand base 100 as a sample to be tested for testing. Furthermore, for reasons of convenience, other components of the test system are not shown in the figures. It will be clear to those skilled in the art that other components of these not shown test systems may also be arranged on the power plant test stand. After the power equipment test stand is integrally mounted in place, the power equipment test stand base 100 is lowermost. It should be clear to those skilled in the art that the power plant referred to in the context of this application may be the power plant of an engine or any other internal operation fluid requiring mechanical device, such as a power plant including, but not limited to, an internal combustion engine, an electric machine, a transmission, and any combination thereof.
As shown, the powerplant test stand base 100 includes a base plate 110. After the power equipment test stand base 100 is in place, the base plate 110 has an upper surface 110a facing the engine (not shown) and a lower surface 110b opposite the upper surface 110 a. The upper surface 110a is designed to have a lowermost position 110c along the gravity direction, as shown in fig. 2. In the case where the substrate 110 has a substantially rectangular shape, the upper surface 110a may be formed of four triangular slopes inclined from the edges of the rectangle to the center, such that the center of the rectangle forms the lowest position 110 c. It should be clear that the number of such ramps may be at least three, to define the lowest position 110 c; or the upper surface 110a may be concave spherical in shape to define the lowermost position 110 c. After the base plate 110 of the power equipment test stand base 100 is horizontally placed and stabilized, the motor mounted on the power equipment test stand base 100 is located above the base plate 110 in the direction of gravity so that the upper surface 110 of the base plate 110 faces the motor. Thus, if any liquid leaks out along the outer surface of the engine during engine testing, the leaked liquid will pool to the lowest position 110c of the upper surface 110a under the influence of gravity.
According to the present application, as shown in fig. 3, a liquid leakage detection alarm device 200 is provided on the lower surface 110b of the base plate 110. The liquid leakage detecting alarm device 200 includes a tuning fork type level sensor 210, a solenoid valve 230, and a communication part 220 between the tuning fork type level sensor 210 and the solenoid valve 230. The communication member 220 is substantially T-shaped as viewed from the side. The communication member 220 includes a first section 221 and a second section 222 vertically extending from the first section 221. It will be clear to a person skilled in the art that the second section 222 may also extend laterally from the first section 221. In the context of the present application, laterally extending means that the second section 222 extends outwardly from one side of the first section 221, and is not limited to necessarily extending perpendicularly with respect to the first section 221. The first section 221 and the second section 222 are substantially straight cylindrical. Meanwhile, a passage 220a is formed in the inside of the communication member 220. The channel 220a is formed in both the first section 221 and the second section 222 such that a channel portion in the first section 221 and a channel portion in the second section 222 communicate with each other.
An external thread may be formed on the free end of the second section 222. Meanwhile, at the lowest position 110c of the substrate 110, a through hole is formed through the thickness of the substrate 110, and the through hole is formed with an internal thread so that the free end of the second section 222 can be fixed therein via a screw-fit. When mounted in place, the communication member 220 is located on the opposite side of the base plate 110 from the side on which the motor is disposed, i.e., toward the lower surface 110b of the base plate 110, and the second section 222 is close to the base plate 110 while the first section 221 is away from the base plate 110. The channel 220a communicates with the upper surface 110a of the substrate 110, meaning that the channel 220a connects with the outside at the upper surface 110 a. Thus, after the communication member 220 is mounted in place on the base plate 110 and the power equipment test stand base 100 is also mounted in place, the first section 221 is disposed generally vertically and the second section 222 is disposed generally horizontally.
The tuning fork level sensor 210 is attached to the free end of the second section 222 such that the tuning fork contacts of the tuning fork level sensor 210 can protrude into the channel portion of the second section 222. The solenoid valve 230 is connected to the other free end of the second section 222 opposite the tuning fork level sensor 210.
As shown in fig. 3, the liquid leakage detecting alarm device 200 further includes a central control unit 240 and an alarm device 250. The central control unit 240 electrically connects the tuning fork level sensor 210 and the solenoid valve 230 so that sensing signals can be taken therefrom and controlled accordingly. The alarm device 250 is electrically connected to the central control unit 240 and is capable of emitting an alarm signal under the control of the latter. The solenoid valve 230 is a normally closed solenoid valve. It will be clear to those skilled in the art that the central control unit 240 and the alarm device 250 may be separate electronic components, or may be a central control unit and an alarm device of an engine test system.
After the liquid leakage detection alarm device 200 according to the present application is installed in place, the engine can be subjected to start-up detection. During the inspection, if there is any liquid leakage from the engine, the leaked liquid drops to collect at the lowest position 110c of the upper surface 110a of the substrate 110 and flows into the inner passage 220a of the communication member 220. After the amount of liquid flowing into the inner channel 220a reaches a certain level, the tuning fork contact of the tuning fork level sensor 210 is triggered to generate an electrical measurement signal. The electrical measurement signal may be received by the central control unit 240. Upon receiving the electrical measurement signal, the central control unit 240 may activate the alarm device 250 to sound an alarm, alerting the operator that a fluid leak has currently occurred in the engine and, optionally, the central control unit 240 may stop the entire engine testing process. Then, the central control unit 240 may activate the solenoid valve 230 to be in an open state as required, so that the liquid collected inside the communication part 220 may be drained from the solenoid valve 230, facilitating the next liquid detection. For example, after a certain time of draining, the central control unit 240 may command the solenoid valve 230 to be closed again.
Fig. 4 schematically shows a flow chart of one example of a method of operation of the liquid leak detection alarm device 200. It will be clear to a person skilled in the art that the operational steps described below as examples can be stored in a memory for execution by the central control unit 240 in the form of execution code. First, the operating method is activated after the engine enters a test. At step S10, the tuning fork level sensor 210 is triggered to detect whether a certain amount of liquid has pooled in the communicating member 110 and, if present, to generate an electrical measurement signal. In step S20, the central control unit 240 determines whether an electrical measurement signal is acquired from the tuning fork level sensor 210. If no electrical measurement signal is obtained, the engine currently being tested is considered not to leak, and the step S10 is continued; if an electrical measurement signal is acquired, proceed to step S30. At step S30, the central control unit 240 instructs the warning device 250 to issue an alarm, alternatively or additionally, the central control unit 240 may also instruct the entire engine detection system to shut down. In step S40, the central control unit 240 instructs the solenoid valve 230 to open to drain the liquid collected in the communicating member 220 for the next liquid detection. In addition, after a certain time of evacuation, the central control unit 240 may command the solenoid valve 230 to close again.
In order to ensure that the liquid collected in the communicating member 220 can be drained as quickly as possible, optionally, the portion of the second section 221 where the solenoid valve 230 is located may be slightly lower in the direction of gravity than the portion of the second section where the tuning fork level sensor 210 is located. For example, the former may be slightly inclined toward the ground. The alarm device 250 may include an indication device and an audio device so that an alarm can be issued in an image and/or sound manner.
Although specific embodiments of the present application have been described herein in detail, they have been presented for purposes of illustration only and are not to be construed as limiting the scope of the application. Further, it should be clear to those skilled in the art that the various embodiments described in this specification can be used in combination with each other. Various substitutions, alterations, and modifications may be conceived without departing from the spirit and scope of the present application.
Claims (11)
1. A power plant test rack base (100), the power plant test rack base (100) comprising a base plate (110), the base plate (110) comprising an upper surface (110a) and a lower surface (110b) opposite the upper surface (110a), characterized in that,
the upper surface (110a) of the base plate (110) having a lowermost position (110c) along the direction of gravity after the power equipment test stand base is in place;
the power equipment test bench base (100) further comprises a liquid leakage detection alarm device (200) located at one side of the lower surface (110b), wherein the liquid leakage detection alarm device (200) comprises a tuning fork type liquid level sensor (210), a solenoid valve (230), and a communication member (220) located between the tuning fork type liquid level sensor (210) and the solenoid valve (230), a passage (220a) is formed in the communication member (220) to be connected to the tuning fork type liquid level sensor (210) and the solenoid valve (230), respectively, the communication member (220) is connected to the base plate (110) at a portion corresponding to the lowest position (110c), and the passage (220a) communicates with the upper surface (110a) of the base plate (110),
the liquid leakage detection alarm device (200) further comprises a central control unit (240) electrically connected with the tuning fork type liquid level sensor (210) and the electromagnetic valve (230) respectively, and an alarm device (250) electrically connected with the central control unit (240).
2. The power equipment test stand base (100) of claim 1, wherein the communication member (220) includes a first section (221) and a second section (222) extending laterally from the first section (221), the second section (222) being proximate to the lower surface (110b) of the base plate (110), the first section (221) being distal from the lower surface (110b) of the base plate (110).
3. The powerplant test stand base (100) of claim 2, wherein the channel (220a) is formed in the first section (221) and the second section (222).
4. The power equipment test stand base (100) of claim 2 or 3, wherein the tuning fork fluid level sensor (210) and the solenoid valve (230) are located at opposite ends of the first section (221) of the communication member (220), respectively.
5. The powerplant test stand base (100) of claim 4, wherein the upper surface (110a) of the base plate (110) has at least three slopes to define the lowermost position (110 c).
6. The power equipment test rack base (100) according to claim 5, wherein said tuning fork level sensor (210) comprises a tuning fork contact protruding into said channel (220a) and said solenoid valve (230) is a normally closed solenoid valve to block said channel (220 a).
7. The power equipment test rack base (100) according to claim 6, wherein the first section (221) of the communication member (220) is horizontally arranged after the power equipment test rack is mounted in place.
8. The power equipment test stand base (100) of claim 7, wherein said central control unit (240) generates an alarm signal to activate said alarm device (250) and/or a shutdown signal to cause engine detection to stop upon receiving an electrical measurement signal generated by said tuning fork level sensor (210) indicating the presence of liquid within said channel (220 a).
9. The power plant test stand base (100) of claim 8, wherein the central control unit (240) generates an electrical signal that causes the solenoid valve (230) to open while the alarm signal and/or the shutdown signal are generated or after a predetermined time.
10. The power plant test rig base (100) according to any of claims 1 to 3, wherein the power plant is a motor vehicle power plant comprising an internal combustion engine and/or an electric motor and/or a transmission connected to the internal combustion engine or the electric motor.
11. A liquid leak detection alarm device (200) of a power equipment test rack base (100), the power equipment test rack base (100) comprising a base plate (110), the base plate (110) comprising an upper surface (110a) and a lower surface (110b) opposite the upper surface (110a), the liquid leak detection alarm device (200) comprising:
a tuning fork type liquid level sensor (210), an electromagnetic valve (230), and a communication component (220) positioned between the tuning fork type liquid level sensor (210) and the electromagnetic valve (230), wherein a channel (220a) is formed in the communication component (220) to be respectively connected with the tuning fork type liquid level sensor (210) and the electromagnetic valve (230),
the upper surface (110a) of the base plate (110) having a lowermost position (110c) along the direction of gravity after the power equipment test stand base is in place;
the liquid leakage detection alarm device (200) is located on the lower surface (110b) side, the communication member (220) is connected to the substrate (110) at a portion corresponding to the lowest position (110c), and the passage (220a) communicates with the upper surface (110a) of the substrate (110),
the liquid leakage detection alarm device (200) further comprises a central control unit (240) electrically connected with the tuning fork type liquid level sensor (210) and the electromagnetic valve (230) respectively, and an alarm device (250) electrically connected with the central control unit (240).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022691564.8U CN213397525U (en) | 2020-11-19 | 2020-11-19 | Liquid leakage detection alarm device and power equipment test bench base equipped with same |
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| CN202022691564.8U CN213397525U (en) | 2020-11-19 | 2020-11-19 | Liquid leakage detection alarm device and power equipment test bench base equipped with same |
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| CN213397525U true CN213397525U (en) | 2021-06-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458850A (en) * | 2022-10-10 | 2022-12-09 | 中国久远高新技术装备有限公司 | Energy storage battery with liquid leakage preventing and absorbing structure |
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2020
- 2020-11-19 CN CN202022691564.8U patent/CN213397525U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458850A (en) * | 2022-10-10 | 2022-12-09 | 中国久远高新技术装备有限公司 | Energy storage battery with liquid leakage preventing and absorbing structure |
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