Internal corrosion testing machine

Abstract

The utility model discloses an internal corrosion testing machine which comprises a first oil tank, a first liquid filling valve, a first filter, a first circulating pump, a first infrared heating tube, a test box and a first circulating valve, a test medium for testing is stored in the first oil tank, and the first liquid filling valve, the first filter and the first circulating pump are sequentially mounted between an outlet of the first oil tank and one end of a test piece to be tested through pipelines. The internal circulation durability test device can be applied to a medium with certain impurities, is used for performing an internal circulation durability test under high temperature and pressure, and solves the problem that the test effect is influenced as conventional equipment cannot simulate a real test working condition.

Description

Technical Field

[0001] The utility model relates to the technical field of internal corrosion testing, in particular to an internal corrosion testing machine. Background Art

[0002] After the production of water-cooled plates and other test pieces is completed, it is necessary to conduct an internal circulation durability test under a certain pressure of medium high temperature pressure (the medium contains molding sand and corrosive liquid). At present, most test equipment on the market only conducts high-temperature medium circulation tests under a single pressure for products, and cannot conduct high-temperature internal circulation tests of the medium under conditions with impurities and corrosive liquids, and thus cannot simulate the actual test conditions and obtain actual test data. Therefore, a device is designed for the circulation pressure detection test of the medium containing molding sand impurities and a certain proportion of NaOH liquid. Utility Model Content

[0003] The utility model aims to provide an internal corrosion testing machine which can be applied to a medium with certain impurities to carry out an internal circulation durability test under high temperature and pressure, thereby solving the problem that conventional equipment cannot simulate the real test conditions, thus affecting the test effect.

[0004] In order to achieve the above purpose, the following technical solutions are adopted:

[0005] An internal corrosion testing machine comprises a first oil tank, a first filling valve, a first filter, a first circulation pump, a first infrared heating tube, a test box, and a first circulation valve; the first oil tank stores a test medium for testing, and the first filling valve, the first filter, and the first circulation pump are installed in sequence between the outlet of the first oil tank and one end of a test piece to be tested via a pipeline; the first infrared heating tube is installed on the pipeline between the first circulation pump and one end of the test piece to be tested, and the test piece to be tested is installed in the test box along a horizontal direction; the inlet of the first circulation valve is connected to the other end of the test piece to be tested via a pipeline, and the outlet of the first circulation valve is connected to the pipeline between the first filter and the first circulation pump; the pipeline between the first circulation valve and the other end of the test piece to be tested is also connected to a sand adding pipe, the end of the sand adding pipe is also provided with a sand adding port, and a first manual valve is also installed on the sand adding pipe.

[0006] Furthermore, a first Y-type filter is installed on the pipeline between the first oil tank and the first filling valve.

[0007] Furthermore, a first flow meter and an inlet stop valve are sequentially installed on the pipeline between the first circulation pump and one end of the test piece to be tested, and an outlet stop valve is also installed on the pipeline between the other end of the test piece to be tested and the first circulation valve.

[0008] Furthermore, the internal corrosion testing machine also includes a temperature sensor and a pressure sensor; the temperature sensor and the pressure sensor are both arranged close to the first infrared heating tube.

[0009] Furthermore, the internal corrosion testing machine also includes a second filter, a pressure relief solenoid valve, and a second oil tank; a pressure relief pipe is also connected to the pipeline connected to the inlet of the first circulation valve, and one end of the pressure relief pipe is connected to the inlet of the second oil tank; the pressure relief solenoid valve and the second filter are installed on the pressure relief pipe in sequence.

[0010] Furthermore, the internal corrosion testing machine also includes a third filter, a pressurizing solenoid valve, and a pressurizing pump; a pressurizing pipe is also connected to the pipeline connected to the inlet of the first circulation valve, and one end of the pressurizing pipe is connected to the outlet of the second oil tank; the pressurizing pump, the pressurizing solenoid valve, and the third filter are installed on the pressurizing pipe in sequence.

[0011] Furthermore, the internal corrosion testing machine also includes an exhaust valve and a fourth filter; an exhaust pipe is connected to the pipeline between the first circulation valve and the other end of the test piece to be tested, and one end of the exhaust pipe is connected to the inlet of the first oil tank; the exhaust valve and the fourth filter are installed on the exhaust pipe in sequence.

[0012] Furthermore, the internal corrosion testing machine also includes a first fluid replenishment pump and a first sewage discharge ball valve; the first fluid replenishment pump and the first sewage discharge ball valve are both connected to the first oil tank via a pipeline.

[0013] Furthermore, the internal corrosion testing machine also includes a second Y-type filter and a liquid return pump; a liquid return pipe is also connected between the test box and the first oil tank, and the second Y-type filter and the liquid return pump are installed on the liquid return pipe in sequence.

[0014] By adopting the above scheme, the beneficial effects of the utility model are:

[0015] The testing machine of the present application can be used for media with certain impurities to conduct internal circulation endurance tests under high temperature and pressure, thereby solving the problem that conventional equipment cannot simulate real test conditions, thereby affecting the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a principle schematic diagram of the utility model;

[0017] The accompanying drawings illustrate:

[0018] 1. The first oil tank; 2. The first filling valve; 3. The first filter; 4. The first circulation pump; 5. The first infrared heating tube; 6. The test box; 7. The first circulation valve; 8. The sand adding tube; 9. The sand adding port; 10. The first manual valve; 11. The first Y-type filter; 12. The first flow meter; 13. The inlet stop valve; 14. The outlet stop valve; 15. The second filter; 16. The pressure relief solenoid valve; 17. The second oil tank; 18. The pressure relief pipe; 19. The third filter; 20. The pressurization solenoid valve; 21. The pressurization pump; 22. The pressurization pipe; 23. The exhaust valve; 24. The fourth filter; 25. The exhaust pipe; 26. The first liquid replenishing pump; 27. The second Y-type filter; 28. The return liquid pump; 29. ​​The return liquid pipe. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Reference Figure 1 As shown, the utility model provides an internal corrosion testing machine, in one embodiment, comprising a first oil tank 1, a first filling valve 2, a first filter 3, a first circulation pump 4, a first infrared heating tube 5, a test box 6, and a first circulation valve 7; the first oil tank 1 stores a test medium for testing, the first filling valve 2, the first filter 3, and the first circulation pump 4 are sequentially installed between the outlet of the first oil tank 1 and one end of the test piece to be tested through a pipeline; the first infrared heating tube 5 is installed on the pipeline between the first circulation pump 4 and one end of the test piece to be tested, and the test piece to be tested is installed in the test box 6 along the horizontal direction; the inlet of the first circulation valve 7 is connected to the other end of the test piece to be tested through a pipeline, and the outlet of the first circulation valve 7 is connected to the pipeline between the first filter 3 and the first circulation pump 4; the pipeline between the first circulation valve 7 and the other end of the test piece to be tested is also connected with a sand adding pipe 8, and the end of the sand adding pipe 8 is also provided with a sand adding port 9, and the sand adding pipe 8 is also installed with a first manual valve 10.

[0021] Continue to refer to Figure 1As shown, in this embodiment, three test pieces can be tested at the same time, which can improve work efficiency. Among them, the first oil tank 1 is mainly used to store the test medium for the test (in this embodiment, the test medium is corrosive water, coolant and other solvents, containing a certain amount of sand, with a maximum size of 0.35 mm and a weight of 0.1 mg ~ 1 g / L), and the first circulation pump 4 is mainly used to circulate the test medium to the entire pipeline (so that the test medium circulates through the test piece to perform a long-term internal corrosion test). At the same time, the first circulation pump 4 uses a specially customized chemical pump, which can be used for transmitting media with certain impurities; the first infrared heating tube 5 (with multiple groups) is mainly used to heat the test medium in the pipeline, and the heating method is non-contact infrared radiation heating, which can avoid long-term circulation of the test medium with impurities to damage the heating tube and increase its service life; in addition, a sand adding port 9 is provided, and sand can be added according to the actual test process.

[0022] In addition, in this embodiment, the internal corrosion testing machine also includes a second filter 15, a pressure relief solenoid valve 16, a second oil tank 17, and a pressure relief pipe 18; the pipeline connected to the inlet of the first circulation valve 7 is also connected to the pressure relief pipe 18, and one end of the pressure relief pipe 18 is connected to the inlet of the second oil tank 17; the pressure relief solenoid valve 16 and the second filter 15 are installed on the pressure relief pipe 18 in sequence; the internal corrosion testing machine also includes a third filter 19, a pressurization solenoid valve 20, and a pressurization pump 21; the pipeline connected to the inlet of the first circulation valve 7 is also connected to the pressure relief pipe 22, and one end of the pressure relief pipe 22 is connected to the outlet of the second oil tank 17; the pressurization pump 21, the pressurization solenoid valve 20, and the third filter 19 are installed on the pressurization pipe 22 in sequence.

[0023] The second oil tank 17 also stores test medium for testing. The pressure pump 21 is mainly used to pressurize the entire pipeline (pump the test medium in the second oil tank 17 into the pipeline for medium circulation transmission). The pressure solenoid valve 20 and the pressure relief solenoid valve 16 (when the pressure is too high, the pressure relief solenoid valve 16 can be opened to drain the test medium in the pipeline into the second oil tank 17) are mainly used to fine-tune the pressure fluctuation caused by temperature in the pipeline. In order to prevent impurities from clogging the valve, filters are added before and after the valve. In addition, it also includes a temperature sensor and a pressure sensor. The temperature sensor and the pressure sensor are arranged close to the first infrared heating tube 5, and can be used to collect and feedback the pressure and temperature of the medium in the pipeline respectively.

[0024] In one embodiment, a first Y-type filter 11 is further installed on the pipeline between the first oil tank 1 and the first filling valve 2, a first flow meter 12 and an inlet stop valve 13 are further installed in sequence on the pipeline between the first circulating pump 4 and one end of the test piece to be tested, and an outlet stop valve 14 is further installed on the pipeline between the other end of the test piece to be tested and the first circulating valve 7. The inlet stop valve 13 and the outlet stop valve 14 are both hard-sealed V-type ball valves, which can avoid damage to the ball valves caused by impurities, and the V-type ball valve has a certain cutting effect. When the medium is a coolant containing a certain proportion of NaOH, long-term testing may produce crystallization. At this time, the V-type ball valve can break the crystal layer to open and close the valve. At the same time, most of the pipelines are made of SUS 316 material, which can ensure the safety of the test. In addition, the flow rate of the medium in the pipeline can be collected and fed back through the first flow meter 12.

[0025] In one embodiment, the internal corrosion test machine further includes an exhaust valve 23 and a fourth filter 24; an exhaust pipe 25 is also connected to the pipeline between the first circulation valve 7 and the other end of the test piece to be tested, and one end of the exhaust pipe 25 is connected to the inlet of the first oil tank 1; the exhaust valve 23 and the fourth filter 24 are sequentially installed on the exhaust pipe 25. Through the exhaust valve 23, it is convenient to exhaust the pipeline. At the same time, the internal corrosion test machine also includes a first liquid replenishment pump 26 and a first sewage discharge ball valve; the first liquid replenishment pump 26 and the first sewage discharge ball valve are connected to the first oil tank 1 through a pipeline. Through the first liquid replenishment pump 26, it is convenient to replenish the first oil tank 1. In addition, the internal corrosion test machine also includes a second Y-type filter 27 and a liquid return pump 28; a liquid return pipe 29 is also connected between the test box 6 and the first oil tank 1, and the second Y-type filter 27 and the liquid return pump 28 are sequentially installed on the liquid return pipe 29. The residual test medium in the test box 6 can be returned to the first oil tank 1 through the liquid return pump 28 for repeated recycling.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An internal corrosion testing machine, characterized in that: It includes a first oil tank, a first filling valve, a first filter, a first circulation pump, a first infrared heating tube, a test box, and a first circulation valve; the first oil tank stores a test medium for testing, and the first filling valve, the first filter, and the first circulation pump are installed in sequence between the outlet of the first oil tank and one end of the test piece to be tested through a pipeline; the first infrared heating tube is installed on the pipeline between the first circulation pump and one end of the test piece to be tested, and the test piece to be tested is installed in the test box along the horizontal direction; the inlet of the first circulation valve is connected to the other end of the test piece to be tested through a pipeline, and the outlet of the first circulation valve is connected to the pipeline between the first filter and the first circulation pump; the pipeline between the first circulation valve and the other end of the test piece to be tested is also connected to a sand adding pipe, the end of the sand adding pipe is also provided with a sand adding port, and the sand adding pipe is also installed with a first manual valve.

2. The internal corrosion testing machine according to claim 1, characterized in that: A first Y-type filter is also installed on the pipeline between the first oil tank and the first filling valve.

3. The internal corrosion testing machine according to claim 2, characterized in that: A first flow meter and an inlet stop valve are sequentially installed on the pipeline between the first circulation pump and one end of the test piece to be tested, and an outlet stop valve is also installed on the pipeline between the other end of the test piece to be tested and the first circulation valve.

4. The internal corrosion testing machine according to claim 1, characterized in that: The internal corrosion testing machine also includes a temperature sensor and a pressure sensor; the temperature sensor and the pressure sensor are both arranged close to the first infrared heating tube.

5. The internal corrosion testing machine according to claim 1, characterized in that: The internal corrosion testing machine also includes a second filter, a pressure relief solenoid valve, and a second oil tank; a pressure relief pipe is also connected to the pipeline connected to the inlet of the first circulation valve, and one end of the pressure relief pipe is connected to the inlet of the second oil tank; the pressure relief solenoid valve and the second filter are installed on the pressure relief pipe in sequence.

6. The internal corrosion testing machine according to claim 5, characterized in that: The internal corrosion testing machine also includes a third filter, a pressurizing solenoid valve, and a pressurizing pump; a pressurizing pipe is also connected to the pipeline connected to the inlet of the first circulation valve, and one end of the pressurizing pipe is connected to the outlet of the second oil tank; the pressurizing pump, the pressurizing solenoid valve, and the third filter are installed on the pressurizing pipe in sequence.

7. The internal corrosion testing machine according to claim 1, characterized in that: The internal corrosion testing machine also includes an exhaust valve and a fourth filter; an exhaust pipe is connected to the pipeline between the first circulation valve and the other end of the test piece to be tested, and one end of the exhaust pipe is connected to the inlet of the first oil tank; the exhaust valve and the fourth filter are installed on the exhaust pipe in sequence.

8. The internal corrosion testing machine according to claim 1, characterized in that: The internal corrosion testing machine further includes a first liquid replenishing pump and a first sewage discharge ball valve; the first liquid replenishing pump and the first sewage discharge ball valve are both connected to the first oil tank via a pipeline.

9. The internal corrosion testing machine according to claim 1, characterized in that: The internal corrosion testing machine also includes a second Y-type filter and a liquid return pump; a liquid return pipe is also connected between the test box and the first oil tank, and the second Y-type filter and the liquid return pump are installed on the liquid return pipe in sequence.

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