Diesel engine exhaust safety valve test device

Abstract

The invention provides a diesel engine exhaust safety valve test device comprising a water tank provided with a water tank used for placing an exhaust safety valve to be detected; the air supply pipeline comprises a main pipeline, a control pipeline and an air inlet pipeline, one end of the main pipeline is connected with air source equipment, the other end of the main pipeline is connected with the control pipeline and the air inlet pipeline, and the end, away from the main pipeline, of the control pipeline is connected to a control port of the exhaust safety valve. One end of the air inlet pipeline deviating from the main pipeline is connected to an air inlet of the exhaust safety valve. Therefore, the to-be-detected exhaust safety valve is arranged in the water tank of the water tank, then is connected with the control port of the exhaust safety valve through the control pipeline and is connected with the air inlet of the exhaust safety valve through the air inlet pipeline, so that air can be supplied to the control port and the air inlet; the performance condition of the exhaust safety valve is visually judged by directly observing whether the air outlet of the exhaust safety valve emits bubbles or not.

Description

Technical Field

[0001] The invention belongs to the technical field of detection equipment, and in particular relates to a diesel engine exhaust safety valve test device. Background Art

[0002] The exhaust safety valve is a crucial component in a diesel engine's exhaust system, installed in the enclosed turbine housing. During operation, a diesel engine generates significant amounts of exhaust gas. When the pressure exceeds the set pressure of the supercharging system, the exhaust safety valve automatically opens to relieve the pressure, ensuring that the medium pressure within the supercharging system and pipelines remains below the set pressure. This protects the supercharging system and pipelines, preventing accidents and minimizing losses. However, current pre-shipment testing of diesel engine exhaust safety valves does not allow for intuitive observation of their performance, potentially making it difficult to accurately assess their ability to respond promptly and stably open and close during actual operation. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a diesel engine exhaust safety valve test device, which is used to solve the problem that the performance test of the exhaust safety valve before leaving the factory cannot be more intuitively observed by the test personnel.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A diesel engine exhaust safety valve test device, comprising:

[0006] A water tank having a water tank for placing the exhaust safety valve to be tested;

[0007] An air supply pipeline, the air supply pipeline includes a main pipeline, a control pipeline and an air intake pipeline. One end of the main pipeline is connected to the air source equipment, and the other end is respectively connected to the control pipeline and the air intake pipeline. The end of the control pipeline facing away from the main pipeline is connected to the control port of the exhaust safety valve, and the end of the air intake pipeline facing away from the main pipeline is connected to the air intake port of the exhaust safety valve.

[0008] Furthermore, pressure gauges are provided on the control pipeline and the air intake pipeline.

[0009] Furthermore, a control switch is provided on the control pipeline.

[0010] Furthermore, a control pressure reducing valve is provided on the control pipeline.

[0011] Furthermore, an air intake switch is provided on the air intake pipe.

[0012] Furthermore, an air intake pressure reducing valve is provided on the air intake pipeline.

[0013] Furthermore, an air pipe joint for connecting to the control pipeline is installed on the control port of the exhaust safety valve.

[0014] Furthermore, an air pipe joint for connecting to the air intake pipeline is installed on the air inlet of the exhaust safety valve.

[0015] Furthermore, when performing a detection operation, the air supply pipeline has a first detection state and a second detection state, wherein, when the air supply pipeline is in the first detection state, the air intake switch is in a closed state and the control switch is in an open state, and when the air supply pipeline is in the second detection state, the air intake switch is in an open state and the control switch is in a closed state.

[0016] Through the above technical solution, the exhaust safety valve to be tested can be completely immersed in the water tank of the water tank. During the testing process, the performance condition of the valve can be judged by visually observing whether there are bubbles coming out of the exhaust port of the exhaust safety valve. Specifically, the exhaust safety valve to be tested is supplied with air through the main line, the control line and the intake line, so that compressed air can be simultaneously transmitted to the control port and the intake port of the exhaust safety valve. The control port is used to simulate the air pressure regulation inside the exhaust safety valve, while the intake port simulates the exhaust pressure by pressurizing, and truly restores the pressure changes during the operation of the diesel engine, ensuring that the exhaust safety valve can accurately respond to the set pressure conditions under actual working conditions, and verifying its response capability and working stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 Schematic diagram of the structure of the test device provided in an exemplary embodiment of the present disclosure.

[0019] Description of reference numerals:

[0020] 1. Water tank; 101. Water sink; 2. Main line; 3. Control line; 301. Control switch; 302. Control pressure reducing valve; 4. Air intake line; 401. Air intake switch; 402. Air intake pressure reducing valve; 5. Pressure gauge; 6. Air source equipment; 7. Exhaust safety valve; 701. Control port; 702. Air intake port; 703. Exhaust port. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] In the specific embodiment provided by the present disclosure, a diesel engine exhaust safety valve 7 test device is provided, referring to Figure 1 As shown, the diesel engine exhaust safety valve 7 test device includes: a water tank 1 and an air supply pipeline, wherein the water tank 1 has a water tank 101 for placing the exhaust safety valve 7 to be tested, and the air supply pipeline includes a main pipeline 2, a control pipeline 3 and an air intake pipeline 4. One end of the main pipeline 2 is connected to the air source equipment 6, and the other end is connected to the control pipeline 3 and the air intake pipeline 4 respectively. The end of the control pipeline 3 away from the main pipeline 2 is connected to the control port 701 of the exhaust safety valve 7, and the end of the air intake pipeline 4 away from the main pipeline 2 is connected to the air intake port 702 of the exhaust safety valve 7.

[0026] Through the above technical solution, the exhaust safety valve 7 to be tested can be completely immersed in the water tank 101 of the water tank 1. During the testing process, the performance condition of the valve can be judged by visually observing whether there are bubbles coming out of the exhaust port 703 of the exhaust safety valve 7. Specifically, the exhaust safety valve 7 to be tested is supplied with air through the main line 2, the control line 3 and the intake line 4, so that compressed air can be simultaneously transmitted to the control port 701 and the intake port 702 of the exhaust safety valve 7. The control port 701 is used to simulate the air pressure regulation inside the exhaust safety valve 7, while the intake port 702 simulates the exhaust pressure by pressurizing, and truly restores the pressure changes during the operation of the diesel engine, ensuring that the exhaust safety valve 7 can accurately respond according to the set pressure conditions under actual working conditions, and verifying its response capability and working stability.

[0027] In some embodiments, the control line 3 is connected to the control port 701 of the exhaust safety valve 7, and can control the opening and closing of the safety valve by adjusting the air pressure, simulating the opening and closing response of the exhaust safety valve 7 when the pressure of the diesel engine supercharging system changes, so that the tester can accurately control the pressure threshold, and then verify the opening performance of the exhaust safety valve 7 under the set pressure, ensuring that the exhaust safety valve 7 can stably open and close under specific pressure conditions, thereby effectively improving the working reliability and safety of the exhaust safety valve 7.

[0028] In some embodiments, by connecting the air inlet line 4 to the air inlet 702 of the exhaust safety valve 7, pressure can be gradually applied to the exhaust safety valve 7 during testing to verify its opening pressure and closing response in actual use. Combined with observing bubbles in the water tank 101, it is possible to clearly confirm whether the opening point of the safety valve meets the set requirements, ensuring that the performance of the exhaust safety valve 7 in actual operation is consistent with the design requirements, and reducing potential risks caused by the safety valve failing to open in a timely manner.

[0029] At the same time, the connection form of connecting the gas source equipment 6 through the main line 2 and then diverting it to the control line 3 and the air intake line 4 avoids the instability factors that may be caused by multi-way gas supply, ensures the stability and reliability of the gas source pressure, and thus makes the performance detection of the exhaust safety valve 7 more accurate and efficient.

[0030] In some embodiments, a pressure gauge 5 is provided on both the control line 3 and the intake line 4. The control line 3 is used to provide air pressure to the control port 701 of the exhaust safety valve 7, thereby controlling the opening and closing of the exhaust safety valve 7. The pressure gauge 5, installed on the control line 3, is capable of monitoring and displaying the air pressure in the control line 3 in real time. The intake line 4 is used to introduce gas (typically exhaust gas or compressed air) into the intake port 702 of the exhaust safety valve 7 to simulate the exhaust gas pressure in actual operation. The pressure gauge 5 on the intake line 4 is used to display the air pressure in the intake line 4 in real time, ensuring that the air pressure at the intake port 702 meets the predetermined standard during the test.

[0031] In some embodiments, reference Figure 1 As shown, the control line 3 is provided with a control switch 301, the control line 3 is provided with a control pressure reducing valve 302, the air intake line 4 is provided with an air intake switch 401, and the air intake line 4 is provided with an air intake pressure reducing valve 402. That is, under the coordinated action of the control switch 301, the control pressure reducing valve 302, the air intake switch 401 and the air intake pressure reducing valve 402, the exhaust safety valve 7 can be accurately controlled and efficiently adjusted during the test process. The setting of the control switch 301 and the air intake switch 401 allows the operator to flexibly control the opening and closing of the airflow, ensuring that the control line 3 and the air intake line 4 always maintain the required airflow state during the test. The control pressure reducing valve 302 and the air intake pressure reducing valve 402 ensure the stability and reliability of the pressure in the control line 3 and the air intake line 4 by accurately adjusting the air pressure, thereby ensuring that the exhaust safety valve 7 is accurately opened or closed within the set pressure range.

[0032] For example, a control switch 301 is located in the control line 3 and is used to open and close the airflow in the control line 3. The operator can use the switch to control the on and off of the airflow, thereby adjusting the opening and closing pressure of the safety valve. A control pressure reducing valve 302 is installed in the control line 3 and is used to regulate the air pressure entering the control port 701, keeping it within a stable and adjustable range.

[0033] Exemplarily, the air intake switch 401 is located in the air intake line 4, and is used to adjust the air flow of the air intake port 702; the air intake pressure reducing valve 402 is installed in the air intake line 4, and is used to adjust the air pressure entering the air intake port 702 to ensure that it does not exceed the set pressure value during the test.

[0034] In some embodiments, reference Figure 1 As shown, an air pipe joint for connecting to the control line 3 is installed on the control port 701 of the exhaust safety valve 7. At the same time, an air pipe joint for connecting to the air intake line 4 is installed on the air inlet 702 of the exhaust safety valve 7. That is, in order to facilitate the reliable connection of the control line 3, the air intake line 4 and the exhaust safety valve 7, air pipe joints are respectively installed on the control port 701 and the air intake port 702. The two air pipe joints act as connecting intermediaries, so that the control line 3 and the air intake line 4 can be quickly and firmly connected to the exhaust safety valve 7, which not only improves the assembly efficiency, but also ensures the sealing and stability of the entire air circuit system.

[0035] In some embodiments, reference Figure 1As shown, when the detection operation is performed, the air supply pipeline has a first detection state and a second detection state, wherein, when the air supply pipeline is in the first detection state, the air intake switch 401 is in a closed state and the control switch 301 is in an open state; when the air supply pipeline is in the second detection state, the air intake switch 401 is in an open state and the control switch 301 is in a closed state.

[0036] Specifically, during the test of the exhaust safety valve 7, performance tests under two conditions can be performed according to the following steps:

[0037] The first is the pressure detection of the control port 701. At this time, when the air supply pipeline is in the first detection state, the air intake switch 401 is in the closed state, and the control switch 301 is in the open state. The specific detection steps are: the exhaust safety valve 7 to be detected is placed in the water tank 101 and submerged in the water tank 101, and the control pipeline 3 and the air intake pipeline 4 are both connected to the exhaust safety valve 7 to be detected. At this time, the air intake switch 401 on the air intake pipeline 4 is in the closed state, and the control switch 301 on the control pipeline 3 is in the open state. Then, 0.4MPa compressed air is introduced into the air inlet 702 through the air intake pipeline 4. At this time, continuous bubbles should not appear at the exhaust port 703. If continuous bubbles appear, it is judged that the sealing of the exhaust safety valve 7 is unqualified. Then, the air intake switch 401 is closed, the control switch 301 is opened, and compressed air with a pressure ≥0.6MPa is introduced through the control pipeline 3. At this time, the air inlet 702 begins to relieve pressure and continuous bubbles appear.

[0038] The second is a valve opening pressure test. At this time, when the air supply pipeline is in the second detection state, the air intake switch 401 is in the open state and the control switch 301 is in the closed state. The specific detection steps are: the exhaust safety valve 7 to be tested is placed in the water tank 101 and submerged in the water tank 101, and the control pipeline 3 and the air intake pipeline 4 are both connected to the exhaust safety valve 7 to be tested. At this time, close the control switch 301, open the air intake switch 401, and slowly adjust the air intake pressure reducing valve 402 until the pressure is 0.2MPa and maintain the pressure for 1min. At this time, there should be no continuous bubbles at the exhaust port 703. Then the pressure is increased through the air intake pressure reducing valve 402. When continuous bubbles appear at the exhaust port 703, it can be seen from the pressure gauge 5 installed on the air intake pipeline 4 that the pressure at this time should meet 0.6±0.2MPa.

[0039] For example, when the air inlet switch 401 is closed and the control switch 301 is opened, air is not supplied to the control port 701, but 0.4 MPa air is introduced through the air inlet 702. At this time, there is no air pressure in the control port 701. In theory, the exhaust safety valve 7 should remain closed. If continuous bubbles appear at the exhaust port 703, it means that the valve is poorly sealed and there is air leakage.

[0040] For example, close the air inlet switch 401, open the control switch 301, and introduce air pressure ≥ 0.6 MPa into the control port 701. If continuous bubbles appear at the exhaust port 703 at this time, it means that the valve has opened in response to the control pressure, indicating that the control mechanism is operating normally.

[0041] For example, slowly adjust the pressure to 0.2 MPa through the air inlet pressure reducing valve 402, maintain the pressure for 1 minute, and check whether there are continuous bubbles in the exhaust port 703. If there are no bubbles, it means that the valve is not accidentally opened under low pressure and has good sealing performance.

[0042] For example, continue to slowly increase the pressure and observe the exhaust port 703. When continuous bubbles appear for the first time, read the value of the pressure gauge 5 on the intake pipe 4. If the pressure value is within the range of 0.6±0.2MPa, it means that the opening pressure of the valve meets the specification requirements.

[0043] In summary, this test can realize the performance test of the exhaust safety valve 7, use underwater bubbles to visually confirm the valve opening node, and combine the reading of the pressure gauge 5 to ensure data accuracy. At the same time, through the slow pressure increase and pressure maintenance process, it can effectively avoid impact misjudgment and improve the repeatability and reliability of the test results.

[0044] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Within the scope of the present invention, the above embodiments or technical features in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0045] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A diesel engine exhaust safety valve test device, characterized in that: include: A water tank (1) having a water tank (101) for placing an exhaust safety valve (7) to be tested; An air supply pipeline, the air supply pipeline comprising a main pipeline (2), a control pipeline (3) and an air intake pipeline (4); one end of the main pipeline (2) is connected to an air source device (6), and the other end is respectively connected to the control pipeline (3) and the air intake pipeline (4); the end of the control pipeline (3) facing away from the main pipeline (2) is connected to the control port (701) of the exhaust safety valve (7); the end of the air intake pipeline (4) facing away from the main pipeline (2) is connected to the air intake port (702) of the exhaust safety valve (7).

2. A diesel engine exhaust safety valve test device according to claim 1, characterized in that: The control pipeline (3) and the air intake pipeline (4) are both provided with pressure gauges (5).

3. A diesel engine exhaust safety valve test device according to claim 1, characterized in that: The control pipeline (3) is provided with a control switch (301).

4. A diesel engine exhaust safety valve test device according to claim 3, characterized in that: The control pipeline (3) is provided with a control pressure reducing valve (302).

5. A diesel engine exhaust safety valve test device according to claim 4, characterized in that: An air intake switch (401) is provided on the air intake pipeline (4).

6. A diesel engine exhaust safety valve test device according to claim 5, characterized in that: An air intake pressure reducing valve (402) is provided on the air intake pipeline (4).

7. A diesel engine exhaust safety valve test device according to claim 1, characterized in that: An air pipe joint for connecting to the control pipeline (3) is installed on the control port (701) of the exhaust safety valve (7).

8. A diesel engine exhaust safety valve test device according to claim 1, characterized in that: An air pipe joint for connecting to the air intake pipeline (4) is installed on the air intake port (702) of the exhaust safety valve (7).

9. A diesel engine exhaust safety valve test device according to claim 5, characterized in that: When performing a detection operation, the air supply pipeline has a first detection state and a second detection state, wherein when the air supply pipeline is in the first detection state, the air intake switch (401) is in a closed state and the control switch (301) is in an open state; when the air supply pipeline is in the second detection state, the air intake switch (401) is in an open state and the control switch (301) is in a closed state.

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