CN108956146B - Valve heat resistance detection device - Google Patents
Valve heat resistance detection device Download PDFInfo
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- CN108956146B CN108956146B CN201810570131.1A CN201810570131A CN108956146B CN 108956146 B CN108956146 B CN 108956146B CN 201810570131 A CN201810570131 A CN 201810570131A CN 108956146 B CN108956146 B CN 108956146B
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- valve
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- transmission rod
- partition plate
- hole
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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
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a valve heat resistance detection device, wherein a heat supply chamber, a detection chamber and a power chamber are formed in a detection box in a separated manner, an electromagnetic heating plate is arranged in the heat supply chamber, a first through hole is formed in a first partition plate for a valve to be detected to simulate air inlet and exhaust movement therein, a first driving mechanism in the power chamber drives the valve to be detected to reciprocate through a first transmission rod, a second through hole is further formed in the first partition plate, fan blades are mounted in the first through hole, a second driving mechanism in the power chamber drives the fan blades to rotate through a second transmission rod to form air flow circulation, a temperature infrared thermometer for detecting the valve to be detected and a plurality of laser displacement sensors for detecting the deformation quantity of the valve to be detected are further arranged in the detection chamber, the valve heat resistance detection device can simulate the working process of the valve in an engine, and detect the deformation quantity of the valve after a period of simulated movement through the laser displacement sensors, and then whether the detected valve is qualified or not is judged.
Description
Technical Field
The invention relates to the technical field of valve detection equipment, in particular to a valve heat resistance detection device.
Background
An important part in the valve chamber engine, including (air) intake valve and exhaust valve, intake valve and exhaust valve all can contact with high temperature and fuel etc. in work, material itself has reached the upper limit that can bear the high temperature, can take place micro-deformation when the valve temperature is higher, the deformation volume is acceptable in reasonable scope, the deformation volume surpasss reasonable scope and then can influence the work of valve, consequently the valve need carry out heat-resisting test before dispatching from the factory to detect whether qualified product, how the high-efficient judgement becomes the direction of prior art development.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a device for detecting the heat resistance of a valve.
The invention provides a valve heat resistance detection device, which comprises a detection box; a first partition plate and a second partition plate are arranged in the detection box, and the first partition plate and the second partition plate sequentially partition the interior of the detection box to form a heat supply chamber, a detection chamber and a power chamber;
an electromagnetic heating plate is arranged in the heat supply cavity;
the first partition plate is provided with a first through hole for the air valve to be tested to simulate air inlet and exhaust movement in the first through hole, a clamping jaw is arranged in the detection cavity and used for clamping the air valve to be tested, the clamping jaw is connected with a first transmission rod, the first transmission rod extends into the power cavity, a first driving mechanism is arranged in the power cavity, and the first driving mechanism drives the clamping jaw to move close to and away from the first through hole through the first transmission rod;
the first partition plate is also provided with a second through hole, a fan blade is installed in the second through hole, a second transmission rod is connected to the fan blade and extends into the power cavity, a second driving mechanism is arranged in the power cavity, and the second driving mechanism drives the fan blade to rotate through the second transmission rod so that the detection cavity and the heat supply cavity form airflow circulation;
an infrared thermometer and a plurality of laser displacement sensors are further arranged in the detection cavity, the infrared thermometer is used for detecting the temperature of the valve to be detected, and the plurality of laser displacement sensors are used for detecting the deformation of the valve to be detected.
Preferably, one end of the first transmission rod, which is positioned in the power chamber, is fixedly connected with a first baffle plate, and the first baffle plate is perpendicular to the first transmission rod; the first driving mechanism comprises a first motor and a cam, the output end of the first motor is connected with the cam, and the cam abuts against the first baffle and is used for driving the first transmission rod to move in a reciprocating mode.
Preferably, the second driving mechanism comprises a second motor, and the output end of the second motor is connected with the second transmission rod.
Preferably, the second partition is made of a heat insulating material.
Preferably, the first transmission rod and the second transmission rod are made of heat insulating materials.
Preferably, the airflow circulation direction is from the heat supply chamber to the detection chamber through the first through hole, and from the detection chamber to the heat supply chamber through the second through hole.
Preferably, the first transmission rod is provided with a second baffle plate, and the second baffle plate is connected with the second partition plate through an elastic element.
The valve heat resistance detection device can simulate the working process of a valve in an engine, detect the deformation quantity of the valve after a period of simulated motion through the laser displacement sensor, and further judge whether the detected valve is a qualified product; the detection device in the embodiment has a simple structure and is easy to operate.
Drawings
Fig. 1 is a schematic structural diagram of a valve heat resistance detection device according to the present invention.
Detailed Description
As shown in fig. 1, fig. 1 is a schematic structural diagram of a valve heat resistance detection apparatus according to the present invention.
Referring to fig. 1, the device for detecting the heat resistance of the valve, provided by the invention, comprises a detection box 1; a first partition plate 21 and a second partition plate 22 are sequentially fixed in the detection box 1 from bottom to top, the first partition plate 21 and the second partition plate 22 divide the interior of the detection box 1 into a heat supply chamber 31, a detection chamber 32 and a power chamber 33, and the heat supply chamber 31, the detection chamber 32 and the power chamber 33 are sequentially arranged from bottom to top;
two electromagnetic heating plates 4 are arranged in the heat supply cavity 31 and used for heating air in the detection box 1 so as to simulate high-temperature gas in the engine;
a first through hole 211 is formed in the middle of the first partition plate 21, the first through hole 211 is used for a valve to be tested to simulate air inlet and exhaust movement therein, so that a detection result is closer to the real working condition of the valve, a clamping jaw 51 is arranged in the detection chamber 32, the clamping jaw 51 is used for clamping the valve to be tested, a first transmission rod 52 is fixedly connected to the clamping jaw 51, the first transmission rod 52 penetrates through the second partition plate 22 and extends into the power chamber 33, a slidable connection is formed between the first transmission rod 52 and the second partition plate 22, a first driving mechanism is arranged in the power chamber 33 and is used for driving the first transmission rod 52 to move up and down, the first transmission rod 52 drives the clamping jaw 51 to move up and down, the clamping jaw 51 drives the valve to be tested to move up and down, the valve to be tested intermittently blocks;
the first partition 21 is further provided with two second through holes 212, the two second through holes 212 are respectively located at two sides of the first through hole 211, the fan blades 61 are installed in the second through holes 212, the second transmission rod 62 is fixedly connected to the fan blades 61, the second transmission rod 62 passes through the second partition 22 and extends into the power chamber 33, the second transmission rod 62 is slidably connected with the second partition 22, a second driving mechanism is disposed in the power chamber 33, the second driving mechanism is used for driving the second transmission rod 62 to rotate, the second driving mechanism in this embodiment is a second motor 63, an output end of the second motor 63 is connected with the second transmission rod 62 through a transmission belt, the second transmission rod 62 drives the fan blades 61 to rotate, the fan blades 61 rotate to drive the detection chamber 32 and the heat supply chamber 31 to form an air flow circulation, the airflow is high-temperature gas formed by heating through the electromagnetic heating plate 4 so as to simulate the effect of the high-temperature gas in the engine on the valve in actual work;
an infrared thermometer 7 and three laser displacement sensors 8 are arranged in the detection chamber 32, the infrared thermometer 7 is used for detecting the temperature of the valve to be detected in real time in the detection process, and the three laser displacement sensors 8 are arranged on the inner wall of the detection box 1 along the vertical reverse sequence and are used for detecting the deformation quantity generated by the valve to be detected in the detection process.
In this embodiment, in order to realize that the first transmission rod 52 reciprocates up and down under the driving of the first driving mechanism, the first transmission rod 52 is fixedly connected with a first baffle 53 at one end of the power chamber 33, the first baffle 53 is arranged perpendicular to the first transmission rod 52, the first driving mechanism is arranged below the first baffle 53, specifically, the first driving mechanism comprises a first motor 54 and a cam 55, the first motor 54 is installed on the second partition 22, the output end of the second motor 63 is connected with the cam 55, the cam 55 abuts against the first baffle 53, when the first motor 54 drives the cam 55 to rotate, the cam 55 drives the first baffle 53 to move up and down, the first baffle 53 drives the first transmission rod 52 to move up and down, and then first transfer line 52 drives clamping jaw 51 and reciprocates, and clamping jaw 51 drives the valve that awaits measuring and reciprocates again, and the first through-hole 211 of valve intermittent type nature shutoff that awaits measuring realizes the purpose of simulation valve actual work condition.
In this embodiment, the temperature of the working environment of the first driving mechanism and the second driving mechanism of the power chamber 33 cannot be too high, while the temperature in the detection chamber 32 is very high, and in order to isolate the heat in the detection chamber 32 from being transferred to the power chamber 33, the second partition 22 is made of a heat insulating material, for example, a micro-nano heat insulating board, a centrifugal peeling fiber cotton/rock wool, a vacuum board, or other materials can be used; further, in order to prevent heat in the detection chamber 32 from entering the power chamber 33 through the first transmission rod 52 and the second transmission rod 62, the first transmission rod 52 and the second transmission rod 62 are made of a heat insulating material, for example, a micro-nano heat insulating board, centrifugal peeling fiber cotton/rock wool, a vacuum board, or the like.
In this embodiment, the heat supply chamber 31 simulates the inside of the engine, and the detection chamber 32 simulates the outside of the engine, so that the gas in the heat supply chamber 31 enters the detection chamber 32 through the first through hole 211, and the gas in the detection chamber 32 enters the heat supply chamber 31 through the second through hole 212.
In this embodiment, the wind directions driven by the two fan blades 61 directly point to the electromagnetic heating plate 4, so that the heat on the electromagnetic heating plate 4 can be taken away in time, and the damage caused by the over-high temperature of the electromagnetic heating plate 4 can be avoided.
In this embodiment, a section of the first transmission rod 52 located in the detection chamber 32 is fixedly connected with a second baffle 56, the second baffle 56 is connected with the second baffle 22 through an elastic element, the elastic element in this embodiment is a spring, and under the action of the spring, the valve to be detected abuts against the edge of the first through hole 211 to plug the first through hole 211, so as to plug the exhaust hole of the engine by the simulated valve.
In the specific working process of the valve heat resistance detection device of the embodiment, a valve to be detected is installed on the clamping jaw 51, the electromagnetic heating plate 4, the first motor 54, the second motor 63, the infrared thermometer 7 and the laser displacement sensors 8 are started, the valve to be detected intermittently blocks the first through hole 211 in the first through hole 211, the detection chamber 32 and the heat supply chamber 31 form airflow circulation, the infrared thermometer 7 detects the temperature of the valve to be detected in real time, and the three laser displacement sensors 8 detect deformation generated by the valve to be detected in real time and observe whether the deformation is within an allowable range.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The device for detecting the heat resistance of the valve is characterized by comprising a detection box (1); a first partition plate (21) and a second partition plate (22) are arranged in the detection box (1), and the first partition plate (21) and the second partition plate (22) sequentially partition the interior of the detection box (1) to form a heat supply chamber (31), a detection chamber (32) and a power chamber (33);
an electromagnetic heating plate (4) is arranged in the heat supply chamber (31);
the first partition plate (21) is provided with a first through hole (211), the first through hole (211) is used for the air valve to be tested to simulate air inlet and exhaust movement in the first through hole, a clamping jaw (51) is arranged in the detection chamber (32), the clamping jaw (51) is used for clamping the air valve to be tested, the clamping jaw (51) is connected with a first transmission rod (52), the first transmission rod (52) penetrates through the second partition plate (22) and extends into the power chamber (33), a first driving mechanism is arranged in the power chamber (33), and the first driving mechanism drives the clamping jaw (51) to move close to and far away from the first through hole (211) through the first transmission rod (52);
the first partition plate (21) is further provided with a second through hole (212), a fan blade (61) is installed in the second through hole (212), the fan blade (61) is connected with a second transmission rod (62), the second transmission rod (62) penetrates through the second partition plate (22) and extends into the power chamber (33), a second driving mechanism is arranged in the power chamber (33), and the second driving mechanism drives the fan blade (61) to rotate through the second transmission rod (62) so that the detection chamber (32) and the heat supply chamber (31) form air flow circulation;
an infrared thermometer (7) and a plurality of laser displacement sensors (8) are further arranged in the detection chamber (32), the infrared thermometer (7) is used for detecting the temperature of the valve to be detected, and the plurality of laser displacement sensors (8) are used for detecting the deformation quantity of the valve to be detected;
one end of the first transmission rod (52) positioned in the power chamber (33) is fixedly connected with a first baffle (53), and the first baffle (53) is vertical to the first transmission rod (52); the first driving mechanism comprises a first motor (54) and a cam (55), the output end of the first motor (54) is connected with the cam (55), and the cam (55) abuts against a first baffle (53) and is used for driving the first transmission rod (52) to move in a reciprocating mode.
2. The valve heat resistance detection apparatus according to claim 1, characterized in that the second drive mechanism includes a second motor (63), and an output end of the second motor (63) is connected to the second transmission rod (62).
3. The valve heat resistance detection apparatus according to claim 1, characterized in that the second partition plate (22) is made of a heat insulating material.
4. The valve heat resistance detection apparatus according to claim 1, characterized in that the first transmission lever (52) and the second transmission lever (62) are made of a heat insulating material.
5. The valve heat resistance detection apparatus according to claim 1, wherein the air flow circulates in a direction from the heat supply chamber (31) to the detection chamber (32) through the first through hole (211), and from the detection chamber (32) to the heat supply chamber (31) through the second through hole (212).
6. The valve heat resistance detection device according to claim 1, characterized in that the first transmission rod (52) is provided with a second baffle (56), and the second baffle (56) is connected with the second partition plate (22) through an elastic element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810570131.1A CN108956146B (en) | 2018-06-05 | 2018-06-05 | Valve heat resistance detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810570131.1A CN108956146B (en) | 2018-06-05 | 2018-06-05 | Valve heat resistance detection device |
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| Publication Number | Publication Date |
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| CN108956146A CN108956146A (en) | 2018-12-07 |
| CN108956146B true CN108956146B (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810570131.1A Active CN108956146B (en) | 2018-06-05 | 2018-06-05 | Valve heat resistance detection device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111554158B (en) * | 2020-05-27 | 2024-06-14 | 大连理工大学 | Portable truss structure experimental device |
| CN115616027B (en) * | 2022-10-13 | 2023-10-13 | 江苏瑞亿扬材料科技有限公司 | PVC calendering membrane temperature resistance detection device and detecting system |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4148914B2 (en) * | 2003-03-31 | 2008-09-10 | 日本ピストンリング株式会社 | Valve / Valve Seat Abrasion Tester |
| CN101398358B (en) * | 2008-10-28 | 2010-12-08 | 浙江大学 | Abrasion test method of air valve and seat ring |
| CN102829962B (en) * | 2012-08-14 | 2015-05-20 | 杭州电子科技大学 | Quick wear test device of engine valve seat ring |
| CN104165816B (en) * | 2014-08-27 | 2019-02-12 | 中国北方发动机研究所(天津) | A kind of valve and valve retainer abrasion tester |
| CN104833602B (en) * | 2015-04-09 | 2017-09-29 | 华南理工大学 | A kind of valve wear test device |
| CN105445124B (en) * | 2015-12-17 | 2018-09-14 | 华南理工大学 | A kind of valve high temperature fatigue testing machine |
| CN105716980A (en) * | 2016-03-24 | 2016-06-29 | 华南理工大学 | Rocker arm type valve wear test device |
| CN106442191B (en) * | 2016-08-15 | 2023-03-10 | 华南理工大学 | Valve wear test device |
| CN107782557A (en) * | 2016-08-25 | 2018-03-09 | 广州汽车集团股份有限公司 | A kind of valve motion testing stand |
| CN106918523B (en) * | 2017-04-10 | 2024-02-02 | 山东大学 | Double-row valve-valve seat ring wear test device and method |
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