CN111537218A - Experimental device for automatically detecting reliability of automatic water drain valve of air reservoir - Google Patents
Experimental device for automatically detecting reliability of automatic water drain valve of air reservoir Download PDFInfo
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- CN111537218A CN111537218A CN202010398124.5A CN202010398124A CN111537218A CN 111537218 A CN111537218 A CN 111537218A CN 202010398124 A CN202010398124 A CN 202010398124A CN 111537218 A CN111537218 A CN 111537218A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses an experimental device for automatically detecting the reliability of an automatic water drain valve of an air reservoir, which comprises a power box, a controller ECU, a counter, a first ASR solenoid valve, a first air reservoir, a second air reservoir, an automatic water drain valve, a second ASR solenoid valve, a one-way valve, an air compressor and an air pressure sensor, wherein one end of a first connecting pipe is connected with the air compressor, the other side of the second ASR solenoid valve is connected with the one-way valve, one end of a second connecting pipe is connected with the second air reservoir, one end of a third connecting pipe is connected with the first air reservoir, one end of a fourth connecting pipe is connected with the first ASR solenoid valve, the first ASR solenoid valve is electrically connected with the controller ECU, the second ASR solenoid valve is electrically connected with the controller ECU, the controller ECU is electrically connected with the counter, the controller ECU is electrically connected with the power box, the automatic water drain valve is, the reliability of the automatic water drain valve is convenient to test and detect, and the practicability is high.
Description
Technical Field
The invention relates to an experimental device, in particular to an experimental device for automatically detecting the reliability of an automatic water drain valve of an air reservoir, and belongs to the technical field of passenger car application.
Background
The passenger car refers to a commercial car which is used for carrying passengers and carry-on luggage of the passengers and is provided with a square carriage for carrying more than 9 persons (including a driver seat), and the type of the commercial car is mainly used for public transportation and group transportation. The foreign bus technology introduced by Chinese bus enterprises mainly focuses on two major European and Japanese series. Typical brands such as Anhui Ankai, Zheng Zhou Yutong, Suzhou Jinlong, Xiamen Jinlong, Shanghai Shenwo, and Dandong Huanghai, etc., the yield of Chinese passenger cars is the first in the world, and the annual yield of individual manufacturers exceeds ten thousand.
The air brake system of the passenger car in China, the air suspension system mostly adopts the air reservoir device to store high-pressure gas, the water vapor in the high-pressure gas enters into the air reservoir and is easy to liquefy, thereby a large amount of water is formed, but the current air reservoir drainage performance is not good enough, if the water source inside the air reservoir is not timely discharged, the passenger car air brake system can be greatly influenced, the performance of the air suspension system, even the brake element is damaged, the automatic water drain valve of the air reservoir is needed for draining water, the reliability and the service life of the automatic water drain valve are particularly important, therefore, the experimental device for automatically detecting the reliability of the automatic water drain valve of the air reservoir is provided.
Disclosure of Invention
The invention aims to provide an experimental device for automatically detecting the reliability of an automatic water drain valve of an air cylinder, which is convenient for injecting gas with the pressure value of 1.0Mpa into a first air cylinder and a second air cylinder through the mutual matching of a second ASR solenoid valve, a one-way valve, an air compressor and a first connecting pipe; through the mutual matching of the controller ECU, the first ASR solenoid valve, the first air reservoir, the second air reservoir, the air pressure sensor, the second connecting pipe, the third connecting pipe and the fourth connecting pipe, the air pressure sensor detects an air pressure value and transmits the air pressure value to the controller ECU, the controller ECU controls the disconnection time of the first ASR solenoid valve and the second ASR solenoid valve for 1 second, so that the air pressure value in the first air reservoir and the second air reservoir is up to 0.85Mpa, and the automatic water drain valve performs air exhaust work; through the mutual cooperation of power supply box, controller ECU, counter and the automatic valve that drains, controller ECU is used for the record cycle number to transmit the counter, can experiment from this reachs the reliability of the automatic valve that drains.
The technical problem solved by the invention is as follows:
(1) how to inject the gas with stable pressure value into the air cylinder and make the pressure value inside the air cylinder reach 1.0 Mpa;
(2) controlling the ECU to control the first ASR solenoid valve and the second ASR solenoid valve to reduce the air pressure inside the air cylinder to 0.8MPa, and controlling the ECU to control the automatic water drain valve on the air cylinder to open;
(3) how to control a counter to record the water discharging times of the automatic water discharging valve through a controller ECU so as to obtain the reliability of the automatic water discharging valve through experiments.
The purpose of the invention can be realized by the following technical scheme: an experimental device for automatically detecting the reliability of an automatic water drain valve of an air reservoir comprises a power box, a controller ECU, a counter, a first ASR electromagnetic valve, a first air reservoir, a second air reservoir, an automatic water drain valve, a second ASR electromagnetic valve, a one-way valve, an air compressor, an air pressure sensor, a first connecting pipe, a second connecting pipe, a connector, a supporting seat, a third connecting pipe and a fourth connecting pipe, one side of the first ASR electromagnetic valve is connected with a first connecting pipe, one end of the first connecting pipe is connected with an air compressor, the other side of the second ASR electromagnetic valve is connected with a one-way valve which is connected with a second connecting pipe, one end of the second connecting pipe is connected with a second air cylinder, one side of the second air cylinder is connected with a third connecting pipe, one end of the third connecting pipe is connected with a first air cylinder, one side of the first air cylinder is connected with a fourth connecting pipe, and one end of the fourth connecting pipe is connected with a first ASR solenoid valve;
first ASR solenoid valve electricity is connected with controller ECU, second ASR solenoid valve electricity is connected with controller ECU, controller ECU electricity is connected with the counter, controller ECU electricity is connected with the power supply box, install the automatic valve that drains on the second air receiver, first air receiver internally mounted has baroceptor, the supporting seat is installed to first air receiver downside, the supporting seat is installed to second air receiver downside.
Further, the power box is a 24V direct current power box.
Further, the connectors are symmetrically installed on two sides of the first air cylinder and the second air cylinder, the second connecting pipe is connected with the second air cylinder in a sealing mode through the connectors, two ends of the third connecting pipe are connected with the first air cylinder and the second air cylinder in a sealing mode through the connectors, and the fourth connecting pipe is connected with the first air cylinder in a sealing mode through the connectors.
Further, the first ASR solenoid valve and the second ASR solenoid valve are both normally open solenoid valves.
Further, the air pressure value of the air source of the air compressor is 1.0 MPa.
The use method of the experimental device for automatically detecting the reliability of the automatic water drain valve of the air reservoir comprises the following steps:
the method comprises the following steps: the air compressor is electrified to work, and high-pressure gas with the pressure value of 1.0Mpa is provided for the experimental device;
step two: the controller ECU controls the second ASR solenoid valve to be switched on and controls the first ASR solenoid valve to be switched off, the first air cylinder and the second air cylinder are inflated, and gas enters the first air cylinder and the second air cylinder through the first connecting pipe, the one-way valve, the second connecting pipe and the third connecting pipe;
step three: when the air pressure sensor detects that the air pressure value reaches 1.0Mpa, data are transmitted to the controller ECU;
step four: the controller ECU controls the second ASR electromagnetic valve and the first ASR electromagnetic valve to be in a disconnected state, and the time duration is about 1 second;
step five: the controller ECU controls the first ASR electromagnetic valve to be switched on and the second ASR electromagnetic valve to be switched off, the experimental device exhausts air, and when the air pressure sensor detects that the air pressure value reaches 0.8Mpa, the automatic water drain valve exhausts air;
step six: and circulating the above steps, recording the circulation times by the controller ECU, transmitting the circulation times to the counter until the automatic water drain valve is damaged, obtaining and recording the total times, and obtaining the conclusion of the reliability of the automatic water drain valve through experiments.
Compared with the prior art, the invention has the beneficial effects that:
1. when the air storage device is used, the power box supplies power to the controller ECU, the first ASR solenoid valve, the second ASR solenoid valve and the air compressor, the air compressor works to generate high-pressure gas with the air pressure value of 1.0Mpa and can supply air to the experimental device, then the controller ECU controls the second ASR solenoid valve to be switched on and controls the first ASR solenoid valve to be switched off, the air compressor inflates air into the first air cylinder and the second air cylinder, and the gas enters the first air cylinder and the second air cylinder through the first connecting pipe, the one-way valve, the second connecting pipe and the third connecting pipe;
2. when the air pressure sensor detects that the air pressure value reaches 1.0Mpa, the air pressure sensor transmits data to the controller ECU, the controller ECU controls the second ASR solenoid valve and the first ASR solenoid valve to be in an off state, the time duration is about 1 second, the controller ECU controls the first ASR solenoid valve to be switched on and the second ASR solenoid valve to be switched off, the experimental device starts to exhaust, when the air pressure sensor detects that the air pressure value reaches 0.8Mpa, the automatic water drain valve exhausts, the steps are cycled, the controller ECU records the cycle number, the cycle number is transmitted to the counter to be recorded until the automatic water drain valve is damaged, the recorded total number of times can be obtained, and therefore the conclusion of the reliability of the automatic water drain valve can be obtained through experiments.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the overall structure of an experimental device for automatically detecting the reliability of an automatic water drain valve of an air reservoir.
In the figure: 1. a power supply box; 2. a controller ECU; 3. a counter; 4. a first ASR solenoid valve; 5. a first air reservoir; 6. a second air cylinder; 7. an automatic water drain valve; 8. a second ASR solenoid valve; 9. a one-way valve; 10. an air compressor; 11. an air pressure sensor; 12. a first connecting pipe; 13. a second connecting pipe; 14. a connector; 15. a supporting seat; 16. a third connecting pipe; 17. and a fourth connecting pipe.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an experimental apparatus for automatically detecting reliability of an automatic water drain valve of an air reservoir comprises a power box 1, a controller ECU2, a counter 3, a first ASR solenoid valve 4, a first air reservoir 5, a second air reservoir 6, an automatic water drain valve 7, a second ASR solenoid valve 8, a check valve 9, an air compressor 10, an air pressure sensor 11, a first connecting pipe 12, a second connecting pipe 13, a connector 14, a support seat 15, a third connecting pipe 16 and a fourth connecting pipe 17, wherein one side of the first ASR solenoid valve 4 is connected with the first connecting pipe 12, one end of the first connecting pipe 12 is connected with the air compressor 10, the other side of the second ASR solenoid valve 8 is connected with the check valve 9, the check valve 9 is connected with the second connecting pipe 13, one end of the second connecting pipe 13 is connected with the second air reservoir 6, one side of the second air reservoir 6 is connected with the third connecting pipe 16, one end of, one side of the first air cylinder 5 is connected with a fourth connecting pipe 17, and one end of the fourth connecting pipe 17 is connected with a first ASR solenoid valve 4;
first ASR solenoid valve 4 is electrically connected with controller ECU2, and second ASR solenoid valve 8 is electrically connected with controller ECU2, and controller ECU2 is electrically connected with counter 3, and controller ECU2 is electrically connected with power supply box 1, installs automatic valve 7 that drains on the second air receiver 6, and first air receiver 5 internally mounted has baroceptor 11, and supporting seat 15 is installed to first air receiver 5 downside, and supporting seat 15 is installed to second air receiver 6 downside.
The power supply box 1 is a 24V direct-current power supply box, for controller ECU2, first ASR solenoid valve 4, second ASR solenoid valve 8 and the power supply of air compressor machine 10, connector 14 is installed to first gas receiver 5 and 6 bilateral symmetry of second gas receiver, second connecting pipe 13 passes through connector 14 and 6 sealing connection of second gas receiver, 16 both ends of third connecting pipe all pass through connector 14 and first gas receiver 5 and 6 sealing connection of second gas receiver, fourth connecting pipe 17 passes through connector 14 and first gas receiver 5 sealing connection, increase the leakproofness of connecting, first ASR solenoid valve 4 and second ASR solenoid valve 8 are normally open solenoid valve, be used for controlling the gas circuit break-make, the air supply atmospheric pressure value of air compressor machine 10 is 1.0 MPa.
The use method of the experimental device for automatically detecting the reliability of the automatic water drain valve of the air reservoir comprises the following steps:
the method comprises the following steps: the air compressor 10 is electrified to work, and high-pressure gas with the pressure value of 1.0Mpa is provided for the experimental device;
step two: the controller ECU2 controls the second ASR electromagnetic valve 8 to be switched on and controls the first ASR electromagnetic valve 4 to be switched off, the first air cylinder 5 and the second air cylinder 6 are inflated, and the air enters the first air cylinder 5 and the second air cylinder 6 through the first connecting pipe 12, the one-way valve 9, the second connecting pipe 13 and the third connecting pipe 16;
step three: when the air pressure sensor 11 detects that the air pressure value reaches 1.0Mpa, data are transmitted to the controller ECU 2;
step four: the controller ECU2 controls the second ASR electromagnetic valve 8 and the first ASR electromagnetic valve 4 to be in a disconnection state, and the time duration is about 1 second;
step five: the controller ECU2 controls the first ASR electromagnetic valve 4 to be switched on and the second ASR electromagnetic valve 8 to be switched off, the experimental device exhausts, and when the air pressure sensor 11 detects that the air pressure value reaches 0.8Mpa, the automatic water drain valve 7 exhausts;
step six: and circulating the above steps, recording the circulation times by the controller ECU2, transmitting the circulation times to the counter 3 until the automatic water drain valve 7 is damaged, obtaining and recording the total times, and obtaining the conclusion of the reliability times of the automatic water drain valve 7 through experiments.
Compared with the prior art, the invention has the beneficial effects that:
1. when the air storage device is used, the power box 1 supplies power to the controller ECU2, the first ASR solenoid valve 4, the second ASR solenoid valve 8 and the air compressor 10, the air compressor 10 works to generate high-pressure gas with the air pressure value of 1.0Mpa and can supply air to an experimental device, then the controller ECU2 controls the second ASR solenoid valve 8 to be switched on and controls the first ASR solenoid valve 4 to be switched off, the air compressor 10 inflates air into the first air cylinder 5 and the second air cylinder 6, and the gas enters the first air cylinder 5 and the second air cylinder 6 through the first connecting pipe 12, the one-way valve 9, the second connecting pipe 13 and the third connecting pipe 16;
2. when the air pressure sensor 11 detects that the air pressure value reaches 1.0Mpa, the air pressure sensor 11 transmits data to the controller ECU2, the controller ECU2 controls the second ASR electromagnetic valve 8 and the first ASR electromagnetic valve 4 to be in an off state, the time duration is about 1 second, the controller ECU2 controls the first ASR electromagnetic valve 4 to be switched on and the second ASR electromagnetic valve 8 to be switched off, the experimental device starts to exhaust, when the air pressure sensor 11 detects that the air pressure value reaches 0.8Mpa, the automatic water drain valve 7 exhausts, the steps are repeated, the controller ECU2 records the cycle times, the cycle times are transmitted to the counter 3 to be recorded until the automatic water drain valve 7 is damaged, the total recorded times can be obtained, and therefore the conclusion of the reliability of the automatic water drain valve 7 can be obtained through experiments.
An experimental device for automatically detecting the reliability of an automatic water drain valve of an air reservoir, wherein a power box 1 is a 24V direct-current power supply and provides power for a controller ECU2, a first ASR electromagnetic valve 4 and a second ASR electromagnetic valve 8, the controller ECU2 is used for controlling the working states of a counter 3, the first ASR electromagnetic valve 4, the second ASR electromagnetic valve 8 and an air pressure sensor 11, the counter 3 is used for receiving data transmitted by a controller ECU2, the first ASR electromagnetic valve 4 and the second ASR electromagnetic valve 8 are both normally open electromagnetic valves, used for controlling the on-off of the gas circuit, the first gas cylinder 5 and the second gas cylinder 6 are used for storing high-pressure gas, the automatic water drain valve 7 is used for discharging water sources in the first gas cylinder 5 and the second gas cylinder 6, the one-way valve 9 is used for controlling the one-way conduction of the gas, the air compressor 10 is used as a gas source, the air pressure sensor 11 is used for detecting air pressure values in the first air storage cylinder 5 and the second air storage cylinder 6;
the air compressor 10 is connected with the first air cylinder 5 and the second air cylinder 6 through a first connecting pipe 12, a second connecting pipe 13 and a third connecting pipe 16, the first air cylinder 5 is connected with the second air cylinder 6 through the third connecting pipe 16, the first air cylinder 5 is connected with the first ASR electromagnetic valve 4 through a fourth connecting pipe 17, and the controller ECU2 is electrically connected with the first ASR electromagnetic valve 4, the second ASR electromagnetic valve 8 and the counter 3 respectively;
when the air storage device works, the power box 1 supplies power to the controller ECU2, the first ASR solenoid valve 4, the second ASR solenoid valve 8 and the air compressor 10, the air compressor 10 works to generate high-pressure gas with the air pressure value of 1.0Mpa and supplies air to the experimental device, then the controller ECU2 controls the second ASR solenoid valve 8 to be switched on and controls the first ASR solenoid valve 4 to be switched off, the air compressor 10 inflates the first air cylinder 5 and the second air cylinder 6, and the gas enters the first air cylinder 5 and the second air cylinder 6 through the first connecting pipe 12, the one-way valve 9, the second connecting pipe 13 and the third connecting pipe 16;
when the air pressure sensor 11 detects that the air pressure value reaches 1.0Mpa, the air pressure sensor 11 transmits data to the controller ECU2, the controller ECU2 controls the second ASR solenoid valve 8 and the first ASR solenoid valve 4 to be in an off state, the time of off is about 1 second, then the controller ECU2 controls the first ASR solenoid valve 4 to be in an on state and the second ASR solenoid valve 8 to be in an off state, at the moment, the experimental device starts to exhaust air, and when the air pressure sensor 11 detects that the air pressure values in the first air cylinder 5 and the second air cylinder 6 are 0.8Mpa, the automatic water drain valve 7 can perform air exhaust work;
with the operation, the above steps are repeated, the controller ECU2 records the cycle number, the cycle number is transmitted to the counter 3 to be recorded, the controller ECU2 records the total number of times until the automatic water drain valve 7 is damaged, and therefore the conclusion of the reliability of the automatic water drain valve 7 can be obtained through experiments.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. An experimental device for automatically detecting the reliability of an automatic water drain valve of an air reservoir is characterized by comprising a power box (1), a controller ECU (2), a counter (3), a first ASR solenoid valve (4), a first air reservoir (5), a second air reservoir (6), an automatic water drain valve (7), a second ASR solenoid valve (8), a one-way valve (9), an air compressor (10), an air pressure sensor (11), a first connecting pipe (12), a second connecting pipe (13), a connector (14), a supporting seat (15), a third connecting pipe (16) and a fourth connecting pipe (17), wherein one side of the first ASR solenoid valve (4) is connected with the first connecting pipe (12), one end of the first connecting pipe (12) is connected with the air compressor (10), the other side of the second ASR solenoid valve (8) is connected with the one-way valve (9), the one-way valve (9) is connected with the second connecting pipe (13, one end of the second connecting pipe (13) is connected with a second air cylinder (6), one side of the second air cylinder (6) is connected with a third connecting pipe (16), one end of the third connecting pipe (16) is connected with a first air cylinder (5), one side of the first air cylinder (5) is connected with a fourth connecting pipe (17), and one end of the fourth connecting pipe (17) is connected with a first ASR electromagnetic valve (4);
first ASR solenoid valve (4) electricity is connected with controller ECU (2), second ASR solenoid valve (8) electricity is connected with controller ECU (2), controller ECU (2) electricity is connected with counter (3), controller ECU (2) electricity is connected with power supply box (1), install automatic valve (7) that drain on second gas receiver (6), first gas receiver (5) internally mounted has baroceptor (11), supporting seat (15) are installed to first gas receiver (5) downside, supporting seat (15) are installed to second gas receiver (6) downside.
2. The experimental device for automatically detecting the reliability of the automatic water drain valve of the air cylinder as claimed in claim 1, wherein the power box (1) is a 24V DC power box.
3. The experimental device for automatically detecting the reliability of the automatic water drain valve of the air cylinder as claimed in claim 1, wherein the first air cylinder (5) and the second air cylinder (6) are symmetrically provided with connectors (14) at two sides, the second connecting pipe (13) is hermetically connected with the second air cylinder (6) through the connectors (14), two ends of the third connecting pipe (16) are hermetically connected with the first air cylinder (5) and the second air cylinder (6) through the connectors (14), and the fourth connecting pipe (17) is hermetically connected with the first air cylinder (5) through the connectors (14).
4. The experimental device for automatically detecting the reliability of the automatic water drain valve of the air cylinder according to claim 1, wherein the first ASR solenoid valve (4) and the second ASR solenoid valve (8) are both normally open solenoid valves.
5. The experimental device for automatically detecting the reliability of the automatic water drain valve of the air cylinder as claimed in claim 1, wherein the air pressure value of the air source of the air compressor (10) is 1.0 MPa.
6. The experimental device for automatically detecting the reliability of the automatic water drain valve of the air cylinder as claimed in claim 1, wherein the experimental device for automatically detecting the reliability of the automatic water drain valve of the air cylinder comprises the following steps:
the method comprises the following steps: the air compressor (10) is electrified to work, and high-pressure gas with the pressure value of 1.0Mpa is provided for the experimental device;
step two: the controller ECU (2) controls the second ASR electromagnetic valve (8) to be connected and controls the first ASR electromagnetic valve (4) to be disconnected, the first air cylinder (5) and the second air cylinder (6) are inflated, and gas enters the first air cylinder (5) and the second air cylinder (6) through the first connecting pipe (12), the one-way valve (9), the second connecting pipe (13) and the third connecting pipe (16);
step three: when the air pressure sensor (11) detects that the air pressure value reaches 1.0Mpa, data are transmitted to the controller ECU (2);
step four: the controller ECU (2) controls the second ASR electromagnetic valve (8) and the first ASR electromagnetic valve (4) to be in a disconnected state, and the time duration is about 1 second;
step five: the controller ECU (2) controls the first ASR electromagnetic valve (4) to be switched on and the second ASR electromagnetic valve (8) to be switched off, the experimental device exhausts, and when the air pressure sensor (11) detects that the air pressure value reaches 0.8Mpa, the automatic water drain valve (7) exhausts;
step six: and (4) circulating the steps, recording the circulation times by the controller ECU (2), transmitting the circulation times to the counter (3) until the automatic water drain valve (7) is damaged, obtaining and recording the total times, and obtaining the conclusion of the reliability times of the automatic water drain valve (7) through experiments.
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| CN202010398124.5A CN111537218B (en) | 2020-05-12 | 2020-05-12 | Experimental device for automatically detecting reliability of automatic water drain valve of air reservoir |
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| CN202010398124.5A CN111537218B (en) | 2020-05-12 | 2020-05-12 | Experimental device for automatically detecting reliability of automatic water drain valve of air reservoir |
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| CN111537218B CN111537218B (en) | 2021-12-10 |
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| CN203601264U (en) * | 2013-11-28 | 2014-05-21 | 中联重科股份有限公司 | Automatic water drainage control system for vehicle air reservoir |
| CN207095836U (en) * | 2017-07-25 | 2018-03-13 | 江苏星河阀门有限公司 | A kind of testing stand for being used to test the stop valve static pressure life-span |
| CN111022908A (en) * | 2019-12-24 | 2020-04-17 | 安徽安凯汽车股份有限公司 | Drain valve for automobile gas storage tank |
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2020
- 2020-05-12 CN CN202010398124.5A patent/CN111537218B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001012245A (en) * | 1999-06-30 | 2001-01-16 | Honda Motor Co Ltd | Failure judgement device of electric heat exchanger |
| JP2004218835A (en) * | 2003-01-13 | 2004-08-05 | Minebea Co Ltd | Inspection method and device for bearing clearance in fluid dynamic-pressure bearing |
| CN2874453Y (en) * | 2006-03-02 | 2007-02-28 | 邯郸钢铁集团有限责任公司 | Automatic water discharge valve test table for locomotive |
| CN201876390U (en) * | 2010-11-11 | 2011-06-22 | 无锡昌华机电制造有限公司 | Automatic control system for water pressure test of cylinder in water jacket method |
| CN203601264U (en) * | 2013-11-28 | 2014-05-21 | 中联重科股份有限公司 | Automatic water drainage control system for vehicle air reservoir |
| CN207095836U (en) * | 2017-07-25 | 2018-03-13 | 江苏星河阀门有限公司 | A kind of testing stand for being used to test the stop valve static pressure life-span |
| CN111022908A (en) * | 2019-12-24 | 2020-04-17 | 安徽安凯汽车股份有限公司 | Drain valve for automobile gas storage tank |
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| CN111537218B (en) | 2021-12-10 |
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